зеркало из https://github.com/github/ruby.git
13272 строки
307 KiB
C
13272 строки
307 KiB
C
/**********************************************************************
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eval.c -
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$Author$
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$Date$
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created at: Thu Jun 10 14:22:17 JST 1993
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Copyright (C) 1993-2003 Yukihiro Matsumoto
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Copyright (C) 2000 Network Applied Communication Laboratory, Inc.
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Copyright (C) 2000 Information-technology Promotion Agency, Japan
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**********************************************************************/
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#include "ruby.h"
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#include "node.h"
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#include "env.h"
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#include "util.h"
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#include "rubysig.h"
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#ifdef HAVE_STDLIB_H
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#include <stdlib.h>
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#endif
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#ifndef EXIT_SUCCESS
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#define EXIT_SUCCESS 0
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#endif
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#ifndef EXIT_FAILURE
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#define EXIT_FAILURE 1
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#endif
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#include <stdio.h>
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#if defined(HAVE_GETCONTEXT) && defined(HAVE_SETCONTEXT)
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#include <ucontext.h>
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#define USE_CONTEXT
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#endif
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#include <setjmp.h>
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#include "st.h"
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#include "dln.h"
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#ifdef __APPLE__
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#include <crt_externs.h>
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#endif
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/* Make alloca work the best possible way. */
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#ifdef __GNUC__
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# ifndef atarist
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# ifndef alloca
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# define alloca __builtin_alloca
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# endif
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# endif /* atarist */
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#else
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# ifdef HAVE_ALLOCA_H
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# include <alloca.h>
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# else
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# ifndef _AIX
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# ifndef alloca /* predefined by HP cc +Olibcalls */
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void *alloca ();
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# endif
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# endif /* AIX */
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# endif /* HAVE_ALLOCA_H */
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#endif /* __GNUC__ */
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#include <stdarg.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#ifdef __BEOS__
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#include <net/socket.h>
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#endif
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#ifdef __MACOS__
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#include "macruby_private.h"
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#endif
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#ifdef __VMS
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#include "vmsruby_private.h"
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#endif
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#ifdef USE_CONTEXT
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typedef struct {
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ucontext_t context;
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volatile int status;
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} rb_jmpbuf_t[1];
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NORETURN(static void rb_jump_context(rb_jmpbuf_t, int));
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static inline void
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rb_jump_context(rb_jmpbuf_t env, int val)
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{
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env->status = val;
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setcontext(&env->context);
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abort(); /* ensure noreturn */
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}
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/*
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* PRE_GETCONTEXT and POST_GETCONTEXT is a magic for getcontext, gcc,
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* IA64 register stack and SPARC register window combination problem.
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*
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* Assume following code sequence.
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*
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* 1. set a register in the register stack/window such as r32/l0.
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* 2. call getcontext.
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* 3. use the register.
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* 4. update the register for other use.
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* 5. call setcontext indirectly (or directly).
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*
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* This code should be run as 1->2->3->4->5->3->4.
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* But after second getcontext return (second 3),
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* the register is broken (updated).
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* It's because getcontext/setcontext doesn't preserve the content of the
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* register stack/window.
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*
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* setjmp also doesn't preserve the content of the register stack/window.
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* But it has not the problem because gcc knows setjmp may return twice.
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* gcc detects setjmp and generates setjmp safe code.
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*
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* So setjmp calls before and after getcontext call makes the code
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* somewhat safe.
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* It fix the problem on IA64.
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* It is not required that setjmp is called at run time, since the problem is
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* register usage.
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*
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* Since the magic setjmp is not enough for SPARC,
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* inline asm is used to prohibit registers in register windows.
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*
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* Since the problem is fixed at gcc 4.0.3, the magic is applied only for
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* prior versions of gcc.
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* http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21957
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* http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22127
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*/
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# define GCC_VERSION_BEFORE(major, minor, patchlevel) \
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(defined(__GNUC__) && !defined(__INTEL_COMPILER) && \
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((__GNUC__ < (major)) || \
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(__GNUC__ == (major) && __GNUC_MINOR__ < (minor)) || \
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(__GNUC__ == (major) && __GNUC_MINOR__ == (minor) && __GNUC_PATCHLEVEL__ < (patchlevel))))
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# if GCC_VERSION_BEFORE(4,0,3) && (defined(sparc) || defined(__sparc__))
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# ifdef __pic__
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/*
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* %l7 is excluded for PIC because it is PIC register.
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* http://lists.freebsd.org/pipermail/freebsd-sparc64/2006-January/003739.html
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*/
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# define PRE_GETCONTEXT \
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({ __asm__ volatile ("" : : : \
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"%o0", "%o1", "%o2", "%o3", "%o4", "%o5", "%o7", \
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"%l0", "%l1", "%l2", "%l3", "%l4", "%l5", "%l6", \
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"%i0", "%i1", "%i2", "%i3", "%i4", "%i5", "%i7"); }),
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# else
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# define PRE_GETCONTEXT \
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({ __asm__ volatile ("" : : : \
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"%o0", "%o1", "%o2", "%o3", "%o4", "%o5", "%o7", \
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"%l0", "%l1", "%l2", "%l3", "%l4", "%l5", "%l6", "%l7", \
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"%i0", "%i1", "%i2", "%i3", "%i4", "%i5", "%i7"); }),
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# endif
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# define POST_GETCONTEXT PRE_GETCONTEXT
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# elif GCC_VERSION_BEFORE(4,0,3) && defined(__ia64)
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static jmp_buf function_call_may_return_twice_jmp_buf;
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int function_call_may_return_twice_false_1 = 0;
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int function_call_may_return_twice_false_2 = 0;
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# define PRE_GETCONTEXT \
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(function_call_may_return_twice_false_1 ? \
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setjmp(function_call_may_return_twice_jmp_buf) : \
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0),
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# define POST_GETCONTEXT \
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(function_call_may_return_twice_false_2 ? \
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setjmp(function_call_may_return_twice_jmp_buf) : \
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0),
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# elif defined(__FreeBSD__) && __FreeBSD__ < 7
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/*
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* workaround for FreeBSD/i386 getcontext/setcontext bug.
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* clear the carry flag by (0 ? ... : ...).
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* FreeBSD PR 92110 http://www.freebsd.org/cgi/query-pr.cgi?pr=92110
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* [ruby-dev:28263]
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*/
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static int volatile freebsd_clear_carry_flag = 0;
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# define PRE_GETCONTEXT \
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(freebsd_clear_carry_flag ? (freebsd_clear_carry_flag = 0) : 0),
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# endif
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# ifndef PRE_GETCONTEXT
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# define PRE_GETCONTEXT
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# endif
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# ifndef POST_GETCONTEXT
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# define POST_GETCONTEXT
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# endif
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# define ruby_longjmp(env, val) rb_jump_context(env, val)
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# define ruby_setjmp(just_before_setjmp, j) ((j)->status = 0, \
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(just_before_setjmp), \
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PRE_GETCONTEXT \
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getcontext(&(j)->context), \
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POST_GETCONTEXT \
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(j)->status)
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#else
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typedef jmp_buf rb_jmpbuf_t;
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# if !defined(setjmp) && defined(HAVE__SETJMP)
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# define ruby_setjmp(just_before_setjmp, env) \
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((just_before_setjmp), _setjmp(env))
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# define ruby_longjmp(env,val) _longjmp(env,val)
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# else
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# define ruby_setjmp(just_before_setjmp, env) \
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((just_before_setjmp), setjmp(env))
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# define ruby_longjmp(env,val) longjmp(env,val)
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# endif
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#endif
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#include <sys/types.h>
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#include <signal.h>
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#include <errno.h>
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#if defined(__VMS)
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#pragma nostandard
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#endif
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#ifdef HAVE_SYS_SELECT_H
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#include <sys/select.h>
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#endif
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/*
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Solaris sys/select.h switches select to select_large_fdset to support larger
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file descriptors if FD_SETSIZE is larger than 1024 on 32bit environment.
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But Ruby doesn't change FD_SETSIZE because fd_set is allocated dynamically.
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So following definition is required to use select_large_fdset.
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*/
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#ifdef HAVE_SELECT_LARGE_FDSET
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#define select(n, r, w, e, t) select_large_fdset(n, r, w, e, t)
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#endif
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#ifdef HAVE_SYS_PARAM_H
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#include <sys/param.h>
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#endif
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#include <sys/stat.h>
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VALUE rb_cProc;
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VALUE rb_cBinding;
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static VALUE proc_alloc(VALUE,struct BLOCK*,int);
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static VALUE proc_invoke(VALUE,VALUE,VALUE,VALUE,int);
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static VALUE proc_lambda(void);
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static VALUE rb_f_binding(VALUE);
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static void rb_f_END(void);
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static struct BLOCK *passing_block(VALUE,struct BLOCK*);
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static int block_orphan(struct BLOCK *data);
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VALUE rb_cMethod;
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VALUE rb_cUnboundMethod;
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static VALUE umethod_bind(VALUE, VALUE);
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static VALUE rb_mod_define_method(int, VALUE*, VALUE);
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NORETURN(static void rb_raise_jump(VALUE));
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static VALUE rb_make_exception(int argc, VALUE *argv);
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static int vis_mode;
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#define VIS_PUBLIC 0
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#define VIS_PRIVATE 1
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#define VIS_PROTECTED 2
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#define VIS_MODFUNC 5
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#define VIS_LOCAL 8
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#define VIS_MASK 15
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#define VIS_SET(f) (vis_mode=(f))
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#define VIS_TEST(f) (vis_mode&(f))
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#define VIS_MODE() (vis_mode)
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NODE* ruby_current_node;
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int ruby_safe_level = 0;
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/* safe-level:
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0 - strings from streams/environment/ARGV are tainted (default)
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1 - no dangerous operation by tainted value
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2 - process/file operations prohibited
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3 - all generated objects are tainted
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4 - no global (non-tainted) variable modification/no direct output
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*/
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static VALUE safe_getter(void);
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static void safe_setter(VALUE val);
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void
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rb_secure(int level)
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{
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if (level <= ruby_safe_level) {
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if (ruby_frame->callee) {
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rb_raise(rb_eSecurityError, "Insecure operation `%s' at level %d",
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rb_id2name(ruby_frame->callee), ruby_safe_level);
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}
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else {
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rb_raise(rb_eSecurityError, "Insecure operation at level %d", ruby_safe_level);
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}
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}
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}
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void
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rb_secure_update(VALUE obj)
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{
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if (!OBJ_TAINTED(obj)) rb_secure(4);
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}
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void
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rb_check_safe_obj(VALUE x)
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{
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if (ruby_safe_level > 0 && OBJ_TAINTED(x)){
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if (ruby_frame->callee) {
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rb_raise(rb_eSecurityError, "Insecure operation - %s",
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rb_id2name(ruby_frame->callee));
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}
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else {
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rb_raise(rb_eSecurityError, "Insecure operation: -r");
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}
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}
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rb_secure(4);
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}
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void
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rb_check_safe_str(VALUE x)
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{
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rb_check_safe_obj(x);
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if (TYPE(x)!= T_STRING) {
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rb_raise(rb_eTypeError, "wrong argument type %s (expected String)",
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rb_obj_classname(x));
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}
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}
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NORETURN(static void raise_undef(VALUE, ID));
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static void
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raise_undef(VALUE klass, ID id)
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{
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rb_name_error(id, "undefined method `%s' for %s `%s'",
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rb_id2name(id),
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(TYPE(klass) == T_MODULE) ? "module" : "class",
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rb_class2name(klass));
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}
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static ID removed, singleton_removed, undefined, singleton_undefined;
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#define CACHE_SIZE 0x800
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#define CACHE_MASK 0x7ff
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#define EXPR1(c,m) ((((c)>>3)^(m))&CACHE_MASK)
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struct cache_entry { /* method hash table. */
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ID mid; /* method's id */
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ID mid0; /* method's original id */
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VALUE klass; /* receiver's class */
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VALUE origin; /* where method defined */
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NODE *method;
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int noex;
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};
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static struct cache_entry cache[2][CACHE_SIZE];
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static int ruby_running = 0;
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void
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rb_clear_cache()
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{
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int i;
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if (!ruby_running) return;
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for (i=0; i<CACHE_SIZE; i++) {
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cache[0][i].mid = cache[1][i].mid = 0;
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}
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}
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static void
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rb_clear_cache_for_remove(VALUE klass, ID id)
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{
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int i, j;
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if (!ruby_running) return;
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for (i=0; i<CACHE_SIZE; i++) {
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for (j=0; j<2; j++) {
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struct cache_entry *ent = cache[j]+i;
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if (ent->mid == id &&
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RCLASS(ent->origin)->m_tbl == RCLASS(klass)->m_tbl) {
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ent->mid = 0;
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}
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}
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}
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}
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static void
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rb_clear_cache_by_id(ID id)
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{
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int i, j;
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if (!ruby_running) return;
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for (i=0; i<CACHE_SIZE; i++) {
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for (j=0; j<2; j++) {
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struct cache_entry *ent = cache[j]+i;
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if (ent->mid == id) {
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ent->mid = 0;
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}
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}
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}
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}
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void
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rb_clear_cache_by_class(VALUE klass)
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{
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int i, j;
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if (!ruby_running) return;
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for (i=0; i<CACHE_SIZE; i++) {
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for (j=0; j<2; j++) {
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struct cache_entry *ent = cache[j]+i;
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if (ent->klass == klass || ent->origin == klass) {
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ent->mid = 0;
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}
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}
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}
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}
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static ID init, eqq, each, aref, aset, match, missing;
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static ID added, singleton_added;
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static ID object_id, __send, __send_bang, respond_to;
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#define NOEX_SAFE(n) ((n) >> 5)
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#define NOEX_WITH(n, v) ((n) | (v) << 5)
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#define NOEX_WITH_SAFE(n) NOEX_WITH(n, ruby_safe_level)
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void
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rb_add_method(VALUE klass, ID mid, NODE *node, int noex)
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{
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NODE *body;
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if (NIL_P(klass)) klass = rb_cObject;
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if (ruby_safe_level >= 4 && (klass == rb_cObject || !OBJ_TAINTED(klass))) {
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rb_raise(rb_eSecurityError, "Insecure: can't define method");
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}
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if (!FL_TEST(klass, FL_SINGLETON) &&
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node && nd_type(node) != NODE_ZSUPER &&
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(mid == rb_intern("initialize" )|| mid == rb_intern("initialize_copy"))) {
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noex = NOEX_PRIVATE | noex;
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}
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else if (FL_TEST(klass, FL_SINGLETON) && node && nd_type(node) == NODE_CFUNC &&
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mid == rb_intern("allocate")) {
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rb_warn("defining %s.allocate is deprecated; use rb_define_alloc_func()",
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rb_class2name(rb_iv_get(klass, "__attached__")));
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mid = ID_ALLOCATOR;
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}
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if (OBJ_FROZEN(klass)) rb_error_frozen("class/module");
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rb_clear_cache_by_id(mid);
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body = NEW_METHOD(node, NOEX_WITH_SAFE(noex));
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st_insert(RCLASS(klass)->m_tbl, mid, (st_data_t)body);
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if (node && mid != ID_ALLOCATOR && ruby_running) {
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if (FL_TEST(klass, FL_SINGLETON)) {
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rb_funcall(rb_iv_get(klass, "__attached__"), singleton_added, 1, ID2SYM(mid));
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}
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else {
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rb_funcall(klass, added, 1, ID2SYM(mid));
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}
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}
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}
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void
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rb_define_alloc_func(VALUE klass, VALUE (*func) (VALUE))
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{
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Check_Type(klass, T_CLASS);
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rb_add_method(CLASS_OF(klass), ID_ALLOCATOR, NEW_CFUNC(func, 0), NOEX_PRIVATE);
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}
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void
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rb_undef_alloc_func(VALUE klass)
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{
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Check_Type(klass, T_CLASS);
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rb_add_method(CLASS_OF(klass), ID_ALLOCATOR, 0, NOEX_UNDEF);
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}
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#define LOOKUP_NORMAL 0
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#define LOOKUP_FCALL 1
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#define LOOKUP_NOSKIP 2
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#define LOOKUP_LOCAL 1
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static NODE*
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search_method(VALUE klass, ID id, VALUE *origin, int flag, int *out)
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{
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NODE *body;
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if (flag == LOOKUP_FCALL && ruby_frame->this_class) {
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if (st_lookup(RCLASS(ruby_frame->this_class)->m_tbl, id, (st_data_t *)&body) &&
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body->nd_noex == NOEX_LOCAL) {
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if (origin) *origin = ruby_frame->this_class;
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if (out) *out = LOOKUP_LOCAL;
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return body;
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}
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}
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for (;klass; klass = RCLASS(klass)->super) {
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if (st_lookup(RCLASS(klass)->m_tbl, id, (st_data_t *)&body) &&
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(flag == LOOKUP_NOSKIP || body->nd_noex != NOEX_LOCAL)) {
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if (origin) *origin = klass;
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if (out) *out = LOOKUP_NORMAL;
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return body;
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}
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}
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return 0;
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}
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static NODE*
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rb_get_method_body(VALUE *klassp, ID *idp, int *noexp)
|
|
{
|
|
ID id = *idp;
|
|
VALUE klass = *klassp;
|
|
VALUE origin;
|
|
NODE * volatile body;
|
|
struct cache_entry *ent;
|
|
int noex = *noexp;
|
|
int lc;
|
|
|
|
if ((body = search_method(klass, id, &origin, noex, &lc)) == 0 || !body->nd_body) {
|
|
/* store empty info in cache */
|
|
ent = cache[noex] + EXPR1(klass, id);
|
|
ent->klass = klass;
|
|
ent->origin = klass;
|
|
ent->mid = ent->mid0 = id;
|
|
ent->noex = 0;
|
|
ent->method = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
if (ruby_running) {
|
|
VALUE c = (lc == LOOKUP_LOCAL) ? origin : klass;
|
|
/* store in cache */
|
|
ent = cache[lc] + EXPR1(c, id);
|
|
ent->klass = c;
|
|
ent->noex = body->nd_noex;
|
|
if (noexp) *noexp = body->nd_noex;
|
|
body = body->nd_body;
|
|
if (nd_type(body) == NODE_FBODY) {
|
|
ent->mid = id;
|
|
*klassp = body->nd_orig;
|
|
ent->origin = body->nd_orig;
|
|
*idp = ent->mid0 = body->nd_mid;
|
|
body = ent->method = body->nd_head;
|
|
}
|
|
else {
|
|
*klassp = origin;
|
|
ent->origin = origin;
|
|
ent->mid = ent->mid0 = id;
|
|
ent->method = body;
|
|
}
|
|
}
|
|
else {
|
|
if (noexp) *noexp = body->nd_noex;
|
|
body = body->nd_body;
|
|
if (nd_type(body) == NODE_FBODY) {
|
|
*klassp = body->nd_orig;
|
|
*idp = body->nd_mid;
|
|
body = body->nd_head;
|
|
}
|
|
else {
|
|
*klassp = origin;
|
|
}
|
|
}
|
|
|
|
return body;
|
|
}
|
|
|
|
NODE*
|
|
rb_method_node(VALUE klass, ID id)
|
|
{
|
|
int noex = LOOKUP_NORMAL;
|
|
struct cache_entry *ent;
|
|
|
|
ent = cache[0] + EXPR1(klass, id);
|
|
if (ent->mid == id && ent->klass == klass && ent->method){
|
|
return ent->method;
|
|
}
|
|
|
|
return rb_get_method_body(&klass, &id, &noex);
|
|
}
|
|
|
|
static void
|
|
remove_method(VALUE klass, ID mid)
|
|
{
|
|
NODE *body;
|
|
|
|
if (klass == rb_cObject) {
|
|
rb_secure(4);
|
|
}
|
|
if (ruby_safe_level >= 4 && !OBJ_TAINTED(klass)) {
|
|
rb_raise(rb_eSecurityError, "Insecure: can't remove method");
|
|
}
|
|
if (OBJ_FROZEN(klass)) rb_error_frozen("class/module");
|
|
if (mid == object_id || mid == __send || mid == __send_bang || mid == init) {
|
|
rb_warn("removing `%s' may cause serious problem", rb_id2name(mid));
|
|
}
|
|
if (!st_delete(RCLASS(klass)->m_tbl, &mid, (st_data_t *)&body) ||
|
|
!body->nd_body) {
|
|
rb_name_error(mid, "method `%s' not defined in %s",
|
|
rb_id2name(mid), rb_class2name(klass));
|
|
}
|
|
rb_clear_cache_for_remove(klass, mid);
|
|
if (FL_TEST(klass, FL_SINGLETON)) {
|
|
rb_funcall(rb_iv_get(klass, "__attached__"), singleton_removed, 1, ID2SYM(mid));
|
|
}
|
|
else {
|
|
rb_funcall(klass, removed, 1, ID2SYM(mid));
|
|
}
|
|
}
|
|
|
|
void
|
|
rb_remove_method(VALUE klass, const char *name)
|
|
{
|
|
remove_method(klass, rb_intern(name));
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* remove_method(symbol) => self
|
|
*
|
|
* Removes the method identified by _symbol_ from the current
|
|
* class. For an example, see <code>Module.undef_method</code>.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_remove_method(int argc, VALUE *argv, VALUE mod)
|
|
{
|
|
int i;
|
|
|
|
for (i=0; i<argc; i++) {
|
|
remove_method(mod, rb_to_id(argv[i]));
|
|
}
|
|
return mod;
|
|
}
|
|
|
|
#undef rb_disable_super
|
|
#undef rb_enable_super
|
|
|
|
void
|
|
rb_disable_super(VALUE klass, const char *name)
|
|
{
|
|
/* obsolete - no use */
|
|
}
|
|
|
|
void
|
|
rb_enable_super(VALUE klass, const char *name)
|
|
{
|
|
rb_warning("rb_enable_super() is obsolete");
|
|
}
|
|
|
|
static void
|
|
rb_export_method(VALUE klass, ID name, ID noex)
|
|
{
|
|
NODE *body;
|
|
VALUE origin;
|
|
|
|
if (klass == rb_cObject) {
|
|
rb_secure(4);
|
|
}
|
|
body = search_method(klass, name, &origin, LOOKUP_NOSKIP, 0);
|
|
if (!body && TYPE(klass) == T_MODULE) {
|
|
body = search_method(rb_cObject, name, &origin, LOOKUP_NOSKIP, 0);
|
|
}
|
|
if (!body || !body->nd_body) {
|
|
raise_undef(klass, name);
|
|
}
|
|
if (body->nd_noex != noex) {
|
|
if (klass == origin) {
|
|
body->nd_noex = noex;
|
|
}
|
|
else {
|
|
rb_add_method(klass, name, NEW_ZSUPER(), noex);
|
|
}
|
|
}
|
|
}
|
|
|
|
static int
|
|
method_exists(VALUE klass, ID id, int noex)
|
|
{
|
|
struct cache_entry *ent;
|
|
int nx = noex;
|
|
|
|
switch (noex) {
|
|
case LOOKUP_NORMAL:
|
|
case LOOKUP_FCALL:
|
|
/* is it in the method cache? */
|
|
ent = cache[noex] + EXPR1(klass, id);
|
|
if (ent->mid == id && ent->klass == klass) {
|
|
if (nx == LOOKUP_NORMAL) {
|
|
if (ent->noex == NOEX_PRIVATE) return Qfalse;
|
|
}
|
|
else if (ent->noex != NOEX_LOCAL) {
|
|
if (!ent->method) return Qfalse;
|
|
return Qtrue;
|
|
}
|
|
}
|
|
/* fall through */
|
|
default:
|
|
if (rb_get_method_body(&klass, &id, &noex)) {
|
|
if (nx == LOOKUP_NORMAL && noex == NOEX_PRIVATE)
|
|
return Qfalse;
|
|
return Qtrue;
|
|
}
|
|
return Qfalse;
|
|
}
|
|
}
|
|
|
|
int
|
|
rb_method_boundp(VALUE klass, ID id, int pub)
|
|
{
|
|
return method_exists(klass, id, pub ? LOOKUP_NORMAL : LOOKUP_FCALL);
|
|
}
|
|
|
|
void
|
|
rb_attr(VALUE klass, ID id, int read, int write, int noex)
|
|
{
|
|
const char *name;
|
|
char *buf;
|
|
ID attriv;
|
|
size_t len;
|
|
|
|
if (!noex) noex = NOEX_PUBLIC;
|
|
else {
|
|
if (VIS_TEST(VIS_PRIVATE)) {
|
|
noex = NOEX_PRIVATE;
|
|
rb_warning((VIS_MODE() == VIS_MODFUNC) ?
|
|
"attribute accessor as module_function" :
|
|
"private attribute?");
|
|
}
|
|
else if (VIS_TEST(VIS_PROTECTED)) {
|
|
noex = NOEX_PROTECTED;
|
|
}
|
|
else {
|
|
noex = NOEX_PUBLIC;
|
|
}
|
|
}
|
|
|
|
if (!rb_is_local_id(id) && !rb_is_const_id(id)) {
|
|
rb_name_error(id, "invalid attribute name `%s'", rb_id2name(id));
|
|
}
|
|
name = rb_id2name(id);
|
|
if (!name) {
|
|
rb_raise(rb_eArgError, "argument needs to be symbol or string");
|
|
}
|
|
len = strlen(name)+2;
|
|
buf = ALLOCA_N(char,len);
|
|
snprintf(buf, len, "@%s", name);
|
|
attriv = rb_intern(buf);
|
|
if (read) {
|
|
rb_add_method(klass, id, NEW_IVAR(attriv), noex);
|
|
}
|
|
if (write) {
|
|
rb_add_method(klass, rb_id_attrset(id), NEW_ATTRSET(attriv), noex);
|
|
}
|
|
}
|
|
|
|
VALUE ruby_errinfo = Qnil;
|
|
extern int ruby_nerrs;
|
|
|
|
VALUE rb_eLocalJumpError;
|
|
VALUE rb_eSysStackError;
|
|
|
|
extern VALUE ruby_top_self;
|
|
|
|
struct FRAME *ruby_frame;
|
|
struct SCOPE *ruby_scope;
|
|
static struct FRAME *top_frame;
|
|
static struct SCOPE *top_scope;
|
|
|
|
static unsigned long frame_unique = 1;
|
|
|
|
#define PUSH_FRAME(link) do { \
|
|
struct FRAME _frame; \
|
|
_frame.prev = ruby_frame; \
|
|
_frame.tmp = 0; \
|
|
_frame.node = ruby_current_node; \
|
|
_frame.argc = 0; \
|
|
_frame.self = (link)?ruby_frame->self:0;\
|
|
_frame.block = (link)?ruby_frame->block:0;\
|
|
_frame.flags = 0; \
|
|
_frame.uniq = frame_unique++; \
|
|
_frame.callee = 0; \
|
|
_frame.this_func = 0; \
|
|
_frame.this_class = 0; \
|
|
ruby_frame = &_frame
|
|
|
|
#define POP_FRAME() \
|
|
ruby_current_node = _frame.node; \
|
|
ruby_frame = _frame.prev; \
|
|
} while (0)
|
|
|
|
static unsigned long block_unique = 1;
|
|
|
|
#define PUSH_BLOCK(v,iv,b) do { \
|
|
struct BLOCK _block; \
|
|
_block.var = (iv); \
|
|
_block.body = (b); \
|
|
_block.self = self; \
|
|
_block.frame = *ruby_frame; \
|
|
_block.cref = ruby_cref; \
|
|
_block.frame.node = ruby_current_node;\
|
|
_block.scope = ruby_scope; \
|
|
_block.vmode = vis_mode; \
|
|
_block.flags = BLOCK_D_SCOPE; \
|
|
_block.dyna_vars = ruby_dyna_vars; \
|
|
_block.wrapper = ruby_wrapper; \
|
|
_block.block_obj = 0; \
|
|
if (b) { \
|
|
_block.uniq = block_unique++; \
|
|
prot_tag->blkid = _block.uniq; \
|
|
} \
|
|
else { \
|
|
_block.uniq = 0; \
|
|
prot_tag->blkid = 0; \
|
|
} \
|
|
(v) = &_block
|
|
|
|
#define POP_BLOCK() } while (0)
|
|
|
|
struct RVarmap *ruby_dyna_vars;
|
|
#define PUSH_VARS() do { \
|
|
struct RVarmap * volatile _old; \
|
|
_old = ruby_dyna_vars; \
|
|
ruby_dyna_vars = 0
|
|
|
|
#define POP_VARS() \
|
|
if (_old && (ruby_scope->flags & SCOPE_DONT_RECYCLE)) {\
|
|
if (RBASIC(_old)->flags) /* unless it's already recycled */ \
|
|
FL_SET(_old, DVAR_DONT_RECYCLE); \
|
|
}\
|
|
ruby_dyna_vars = _old; \
|
|
} while (0)
|
|
|
|
#define DVAR_DONT_RECYCLE FL_USER2
|
|
|
|
#define DMETHOD_P() (ruby_frame->flags & FRAME_DMETH)
|
|
|
|
static struct RVarmap*
|
|
new_dvar(ID id, VALUE value, struct RVarmap *prev)
|
|
{
|
|
NEWOBJ(vars, struct RVarmap);
|
|
OBJSETUP(vars, 0, T_VARMAP);
|
|
vars->id = id;
|
|
vars->val = value;
|
|
vars->next = prev;
|
|
|
|
return vars;
|
|
}
|
|
|
|
VALUE
|
|
rb_dvar_defined(ID id)
|
|
{
|
|
struct RVarmap *vars = ruby_dyna_vars;
|
|
|
|
while (vars) {
|
|
if (vars->id == id) return Qtrue;
|
|
vars = vars->next;
|
|
}
|
|
return Qfalse;
|
|
}
|
|
|
|
VALUE
|
|
rb_dvar_curr(ID id)
|
|
{
|
|
struct RVarmap *vars = ruby_dyna_vars;
|
|
|
|
while (vars) {
|
|
if (vars->id == 0) break;
|
|
if (vars->id == id) return Qtrue;
|
|
vars = vars->next;
|
|
}
|
|
return Qfalse;
|
|
}
|
|
|
|
VALUE
|
|
rb_dvar_ref(ID id)
|
|
{
|
|
struct RVarmap *vars = ruby_dyna_vars;
|
|
|
|
while (vars) {
|
|
if (vars->id == id) {
|
|
return vars->val;
|
|
}
|
|
vars = vars->next;
|
|
}
|
|
return Qnil;
|
|
}
|
|
|
|
void
|
|
rb_dvar_push(ID id, VALUE value)
|
|
{
|
|
ruby_dyna_vars = new_dvar(id, value, ruby_dyna_vars);
|
|
}
|
|
|
|
static void
|
|
dvar_asgn_internal(ID id, VALUE value, int curr)
|
|
{
|
|
int n = 0;
|
|
struct RVarmap *vars = ruby_dyna_vars;
|
|
|
|
while (vars) {
|
|
if (curr && vars->id == 0) {
|
|
/* first null is a dvar header */
|
|
n++;
|
|
if (n == 2) break;
|
|
}
|
|
if (vars->id == id) {
|
|
vars->val = value;
|
|
return;
|
|
}
|
|
vars = vars->next;
|
|
}
|
|
if (!ruby_dyna_vars) {
|
|
ruby_dyna_vars = new_dvar(id, value, 0);
|
|
}
|
|
else {
|
|
vars = new_dvar(id, value, ruby_dyna_vars->next);
|
|
ruby_dyna_vars->next = vars;
|
|
}
|
|
}
|
|
|
|
static inline void
|
|
dvar_asgn(ID id, VALUE value)
|
|
{
|
|
dvar_asgn_internal(id, value, 0);
|
|
}
|
|
|
|
static inline void
|
|
dvar_asgn_curr(ID id, VALUE value)
|
|
{
|
|
dvar_asgn_internal(id, value, 1);
|
|
}
|
|
|
|
VALUE *
|
|
rb_svar(int cnt)
|
|
{
|
|
struct RVarmap *vars = ruby_dyna_vars;
|
|
ID id;
|
|
|
|
if (!ruby_scope->local_tbl) return NULL;
|
|
if (cnt >= ruby_scope->local_tbl[0]) return NULL;
|
|
id = ruby_scope->local_tbl[cnt+1];
|
|
while (vars) {
|
|
if (vars->id == id) return &vars->val;
|
|
vars = vars->next;
|
|
}
|
|
if (ruby_scope->local_vars == 0) return NULL;
|
|
return &ruby_scope->local_vars[cnt];
|
|
}
|
|
|
|
struct tag {
|
|
rb_jmpbuf_t buf;
|
|
struct FRAME *frame;
|
|
VALUE tag;
|
|
VALUE retval;
|
|
struct SCOPE *scope;
|
|
VALUE dst;
|
|
struct tag *prev;
|
|
int blkid;
|
|
};
|
|
static struct tag *prot_tag;
|
|
|
|
#define PUSH_TAG(ptag) do { \
|
|
struct tag _tag; \
|
|
_tag.retval = Qnil; \
|
|
_tag.frame = ruby_frame; \
|
|
_tag.prev = prot_tag; \
|
|
_tag.scope = ruby_scope; \
|
|
_tag.tag = ptag; \
|
|
_tag.dst = -1; \
|
|
_tag.blkid = 0; \
|
|
prot_tag = &_tag
|
|
|
|
#define PROT_NONE Qfalse /* 0 */
|
|
#define PROT_THREAD Qtrue /* 2 */
|
|
#define PROT_FUNC INT2FIX(0) /* 1 */
|
|
#define PROT_LOOP INT2FIX(1) /* 3 */
|
|
#define PROT_LAMBDA INT2FIX(2) /* 5 */
|
|
#define PROT_YIELD INT2FIX(3) /* 7 */
|
|
#define PROT_TOP INT2FIX(4) /* 9 */
|
|
|
|
#define EXEC_TAG() (FLUSH_REGISTER_WINDOWS, ruby_setjmp(((void)0), prot_tag->buf))
|
|
|
|
#define JUMP_TAG(st) do { \
|
|
ruby_frame = prot_tag->frame; \
|
|
ruby_longjmp(prot_tag->buf,(st)); \
|
|
} while (0)
|
|
|
|
#define POP_TAG() \
|
|
prot_tag = _tag.prev; \
|
|
} while (0)
|
|
|
|
#define TAG_DST() (_tag.dst == (VALUE)ruby_frame->uniq)
|
|
|
|
#define TAG_RETURN 0x1
|
|
#define TAG_BREAK 0x2
|
|
#define TAG_NEXT 0x3
|
|
#define TAG_RETRY 0x4
|
|
#define TAG_REDO 0x5
|
|
#define TAG_RAISE 0x6
|
|
#define TAG_THROW 0x7
|
|
#define TAG_FATAL 0x8
|
|
#define TAG_CONTCALL 0x9
|
|
#define TAG_THREAD 0xa
|
|
#define TAG_MASK 0xf
|
|
|
|
VALUE ruby_wrapper; /* security wrapper */
|
|
|
|
static NODE *ruby_cref = 0;
|
|
static NODE *top_cref;
|
|
#define PUSH_CREF(c) ruby_cref = NEW_NODE(NODE_CREF,(c),0,ruby_cref)
|
|
#define POP_CREF() ruby_cref = ruby_cref->nd_next
|
|
|
|
#define PUSH_SCOPE() do { \
|
|
volatile int _vmode = vis_mode; \
|
|
struct SCOPE * volatile _old; \
|
|
NEWOBJ(_scope, struct SCOPE); \
|
|
OBJSETUP(_scope, 0, T_SCOPE); \
|
|
_scope->local_tbl = 0; \
|
|
_scope->local_vars = 0; \
|
|
_scope->flags = 0; \
|
|
_old = ruby_scope; \
|
|
ruby_scope = _scope; \
|
|
vis_mode = VIS_PUBLIC
|
|
|
|
typedef struct thread * rb_thread_t;
|
|
static rb_thread_t curr_thread = 0;
|
|
static rb_thread_t main_thread;
|
|
static void scope_dup(struct SCOPE *);
|
|
|
|
#define POP_SCOPE() \
|
|
if (ruby_scope->flags & SCOPE_DONT_RECYCLE) {\
|
|
if (_old) scope_dup(_old); \
|
|
} \
|
|
if (!(ruby_scope->flags & SCOPE_MALLOC)) {\
|
|
ruby_scope->local_vars = 0; \
|
|
ruby_scope->local_tbl = 0; \
|
|
if (!(ruby_scope->flags & SCOPE_DONT_RECYCLE) && \
|
|
ruby_scope != top_scope) { \
|
|
rb_gc_force_recycle((VALUE)ruby_scope);\
|
|
} \
|
|
} \
|
|
ruby_scope->flags |= SCOPE_NOSTACK; \
|
|
ruby_scope = _old; \
|
|
vis_mode = _vmode; \
|
|
} while (0)
|
|
|
|
struct ruby_env {
|
|
struct ruby_env *prev;
|
|
struct FRAME *frame;
|
|
struct SCOPE *scope;
|
|
struct BLOCK *block;
|
|
struct tag *tag;
|
|
NODE *cref;
|
|
};
|
|
|
|
static void push_thread_anchor(struct ruby_env *);
|
|
static void pop_thread_anchor(struct ruby_env *);
|
|
|
|
#define PUSH_THREAD_TAG() PUSH_TAG(PROT_THREAD); \
|
|
do { \
|
|
struct ruby_env _interp; \
|
|
push_thread_anchor(&_interp);
|
|
#define POP_THREAD_TAG() \
|
|
pop_thread_anchor(&_interp); \
|
|
} while (0); \
|
|
POP_TAG()
|
|
|
|
static VALUE rb_eval(VALUE,NODE*);
|
|
static VALUE eval(VALUE,VALUE,VALUE,const char*,int);
|
|
static NODE *compile(VALUE, const char*, int);
|
|
|
|
static VALUE rb_yield_0(VALUE, VALUE, VALUE, int);
|
|
|
|
#define YIELD_ARY_ARGS 1
|
|
#define YIELD_PROC_INVOKE 2
|
|
#define YIELD_PUBLIC_DEF 4
|
|
#define YIELD_FUNC_AVALUE 1
|
|
#define YIELD_FUNC_SVALUE 2
|
|
|
|
typedef enum calling_scope {
|
|
CALLING_NORMAL,
|
|
CALLING_FUNCALL,
|
|
CALLING_FCALL,
|
|
CALLING_VCALL,
|
|
CALLING_SUPER,
|
|
} calling_scope_t;
|
|
|
|
static VALUE rb_call(VALUE,VALUE,ID,int,const VALUE*,struct BLOCK*,calling_scope_t,int);
|
|
static VALUE module_setup(VALUE,NODE*);
|
|
|
|
static VALUE massign(VALUE,NODE*,VALUE,int);
|
|
static void assign(VALUE,NODE*,VALUE,int);
|
|
static int formal_assign(VALUE, NODE*, int, const VALUE*, VALUE*);
|
|
|
|
typedef struct event_hook {
|
|
rb_event_hook_func_t func;
|
|
rb_event_t events;
|
|
struct event_hook *next;
|
|
} rb_event_hook_t;
|
|
|
|
static rb_event_hook_t *event_hooks;
|
|
|
|
#define EXEC_EVENT_HOOK(event, node, self, id, klass) \
|
|
do { \
|
|
rb_event_hook_t *hook = event_hooks; \
|
|
rb_event_hook_func_t hook_func; \
|
|
rb_event_t events; \
|
|
\
|
|
while (hook) { \
|
|
hook_func = hook->func; \
|
|
events = hook->events; \
|
|
hook = hook->next; \
|
|
if (events & event) \
|
|
(*hook_func)(event, node, self, id, klass); \
|
|
} \
|
|
} while (0)
|
|
|
|
static VALUE trace_func = 0;
|
|
static int tracing = 0;
|
|
static void call_trace_func(rb_event_t,NODE*,VALUE,ID,VALUE);
|
|
|
|
#if 0
|
|
#define SET_CURRENT_SOURCE() (ruby_sourcefile = ruby_current_node->nd_file, \
|
|
ruby_sourceline = nd_line(ruby_current_node))
|
|
#else
|
|
#define SET_CURRENT_SOURCE() ((void)0)
|
|
#endif
|
|
|
|
void
|
|
ruby_set_current_source(void)
|
|
{
|
|
if (ruby_current_node) {
|
|
ruby_sourcefile = ruby_current_node->nd_file;
|
|
ruby_sourceline = nd_line(ruby_current_node);
|
|
}
|
|
}
|
|
|
|
static void
|
|
warn_printf(const char *fmt, ...)
|
|
{
|
|
char buf[BUFSIZ];
|
|
va_list args;
|
|
|
|
va_start(args, fmt);
|
|
vsnprintf(buf, BUFSIZ, fmt, args);
|
|
va_end(args);
|
|
rb_write_error(buf);
|
|
}
|
|
|
|
static VALUE
|
|
error_line(struct FRAME *frame, NODE *node)
|
|
{
|
|
char *file;
|
|
int line;
|
|
|
|
if (node) {
|
|
file = node->nd_file;
|
|
line = nd_line(node);
|
|
}
|
|
else {
|
|
file = ruby_sourcefile;
|
|
line = ruby_sourceline;
|
|
}
|
|
ruby_set_current_source();
|
|
if (ruby_sourcefile) {
|
|
if (frame->callee) {
|
|
if (frame->flags & FRAME_FUNC) {
|
|
return rb_sprintf("%s:%d:in `%s'", file, line,
|
|
rb_id2name(frame->this_func));
|
|
}
|
|
else {
|
|
VALUE oklass = frame->this_class;
|
|
char *rec = 0;
|
|
|
|
switch (TYPE(frame->self)) {
|
|
case T_NIL:
|
|
rec = "nil"; break;
|
|
case T_TRUE:
|
|
rec = "true"; break;
|
|
case T_FALSE:
|
|
rec = "false"; break;
|
|
}
|
|
if (rec) {
|
|
return rb_sprintf("%s:%d:in `%s.%s'", file, line, rec,
|
|
rb_id2name(frame->this_func));
|
|
}
|
|
if (TYPE(oklass) == T_ICLASS) {
|
|
oklass = RBASIC(oklass)->klass;
|
|
}
|
|
else if (FL_TEST(oklass, FL_SINGLETON)) {
|
|
oklass = rb_iv_get(oklass, "__attached__");
|
|
}
|
|
return rb_sprintf("%s:%d:in `%s#%s'", file, line,
|
|
rb_class2name(oklass),
|
|
rb_id2name(frame->this_func));
|
|
}
|
|
}
|
|
else if (!node && ruby_sourceline == 0) {
|
|
return rb_str_new2(ruby_sourcefile);
|
|
}
|
|
}
|
|
return rb_sprintf("%s:%d", file, line);
|
|
}
|
|
|
|
#define warn_print(x) rb_write_error(x)
|
|
#define warn_print2(x,l) rb_write_error2(x,l)
|
|
|
|
static void
|
|
error_pos(void)
|
|
{
|
|
VALUE pos = error_line(ruby_frame, 0);
|
|
warn_printf("%s", StringValueCStr(pos));
|
|
}
|
|
|
|
static VALUE
|
|
get_backtrace(VALUE info)
|
|
{
|
|
if (NIL_P(info)) return Qnil;
|
|
info = rb_funcall(info, rb_intern("backtrace"), 0);
|
|
if (NIL_P(info)) return Qnil;
|
|
return rb_check_array_type(info);
|
|
}
|
|
|
|
static void
|
|
set_backtrace(VALUE info, VALUE bt)
|
|
{
|
|
rb_funcall(info, rb_intern("set_backtrace"), 1, bt);
|
|
}
|
|
|
|
static void
|
|
error_print(void)
|
|
{
|
|
VALUE errat = Qnil; /* OK */
|
|
volatile VALUE eclass, e;
|
|
const char *einfo;
|
|
long elen;
|
|
|
|
if (NIL_P(ruby_errinfo)) return;
|
|
|
|
PUSH_TAG(PROT_NONE);
|
|
if (EXEC_TAG() == 0) {
|
|
errat = get_backtrace(ruby_errinfo);
|
|
}
|
|
else {
|
|
errat = Qnil;
|
|
}
|
|
if (EXEC_TAG()) goto error;
|
|
if (NIL_P(errat)){
|
|
ruby_set_current_source();
|
|
if (ruby_sourcefile)
|
|
warn_printf("%s:%d", ruby_sourcefile, ruby_sourceline);
|
|
else
|
|
warn_printf("%d", ruby_sourceline);
|
|
}
|
|
else if (RARRAY(errat)->len == 0) {
|
|
error_pos();
|
|
}
|
|
else {
|
|
VALUE mesg = RARRAY(errat)->ptr[0];
|
|
|
|
if (NIL_P(mesg)) error_pos();
|
|
else {
|
|
warn_print2(RSTRING(mesg)->ptr, RSTRING(mesg)->len);
|
|
}
|
|
}
|
|
|
|
eclass = CLASS_OF(ruby_errinfo);
|
|
if (EXEC_TAG() == 0) {
|
|
e = rb_funcall(ruby_errinfo, rb_intern("message"), 0, 0);
|
|
StringValue(e);
|
|
einfo = RSTRING(e)->ptr;
|
|
elen = RSTRING(e)->len;
|
|
}
|
|
else {
|
|
einfo = "";
|
|
elen = 0;
|
|
}
|
|
if (EXEC_TAG()) goto error;
|
|
if (eclass == rb_eRuntimeError && elen == 0) {
|
|
warn_print(": unhandled exception\n");
|
|
}
|
|
else {
|
|
VALUE epath;
|
|
|
|
epath = rb_class_name(eclass);
|
|
if (elen == 0) {
|
|
warn_print(": ");
|
|
warn_print2(RSTRING(epath)->ptr, RSTRING(epath)->len);
|
|
warn_print("\n");
|
|
}
|
|
else {
|
|
char *tail = 0;
|
|
long len = elen;
|
|
|
|
if (RSTRING(epath)->ptr[0] == '#') epath = 0;
|
|
if (tail = memchr(einfo, '\n', elen)) {
|
|
len = tail - einfo;
|
|
tail++; /* skip newline */
|
|
}
|
|
warn_print(": ");
|
|
warn_print2(einfo, len);
|
|
if (epath) {
|
|
warn_print(" (");
|
|
warn_print2(RSTRING(epath)->ptr, RSTRING(epath)->len);
|
|
warn_print(")\n");
|
|
}
|
|
if (tail) {
|
|
warn_print2(tail, elen-len-1);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!NIL_P(errat)) {
|
|
long i;
|
|
struct RArray *ep = RARRAY(errat);
|
|
|
|
#define TRACE_MAX (TRACE_HEAD+TRACE_TAIL+5)
|
|
#define TRACE_HEAD 8
|
|
#define TRACE_TAIL 5
|
|
|
|
ep = RARRAY(errat);
|
|
for (i=1; i<ep->len; i++) {
|
|
if (TYPE(ep->ptr[i]) == T_STRING) {
|
|
warn_printf("\tfrom %s\n", RSTRING(ep->ptr[i])->ptr);
|
|
}
|
|
if (i == TRACE_HEAD && ep->len > TRACE_MAX) {
|
|
warn_printf("\t ... %ld levels...\n",
|
|
ep->len - TRACE_HEAD - TRACE_TAIL);
|
|
i = ep->len - TRACE_TAIL;
|
|
}
|
|
}
|
|
}
|
|
error:
|
|
POP_TAG();
|
|
}
|
|
|
|
#if defined(__APPLE__)
|
|
#define environ (*_NSGetEnviron())
|
|
#elif !defined(_WIN32) && !defined(__MACOS__) || defined(_WIN32_WCE)
|
|
extern char **environ;
|
|
#endif
|
|
char **rb_origenviron;
|
|
|
|
void rb_call_inits(void);
|
|
void Init_stack(VALUE*);
|
|
void Init_heap(void);
|
|
void Init_ext(void);
|
|
|
|
#ifdef HAVE_NATIVETHREAD
|
|
static rb_nativethread_t ruby_thid;
|
|
int
|
|
is_ruby_native_thread(void)
|
|
{
|
|
return NATIVETHREAD_EQUAL(ruby_thid, NATIVETHREAD_CURRENT());
|
|
}
|
|
|
|
# ifdef HAVE_NATIVETHREAD_KILL
|
|
void
|
|
ruby_native_thread_kill(int sig)
|
|
{
|
|
NATIVETHREAD_KILL(ruby_thid, sig);
|
|
}
|
|
# endif
|
|
#endif
|
|
|
|
NORETURN(static void rb_thread_start_1(void));
|
|
|
|
void
|
|
ruby_init(void)
|
|
{
|
|
static int initialized = 0;
|
|
static struct FRAME frame;
|
|
int state;
|
|
|
|
if (initialized)
|
|
return;
|
|
initialized = 1;
|
|
#ifdef HAVE_NATIVETHREAD
|
|
ruby_thid = NATIVETHREAD_CURRENT();
|
|
#endif
|
|
|
|
ruby_frame = top_frame = &frame;
|
|
|
|
#ifdef __MACOS__
|
|
rb_origenviron = 0;
|
|
#else
|
|
rb_origenviron = environ;
|
|
#endif
|
|
|
|
Init_stack((void*)&state);
|
|
Init_heap();
|
|
PUSH_SCOPE();
|
|
top_scope = ruby_scope;
|
|
/* default visibility is private at toplevel */
|
|
VIS_SET(VIS_PRIVATE);
|
|
|
|
PUSH_TAG(PROT_NONE);
|
|
if ((state = EXEC_TAG()) == 0) {
|
|
rb_call_inits();
|
|
ruby_frame->self = ruby_top_self;
|
|
top_cref = rb_node_newnode(NODE_CREF,rb_cObject,0,0);
|
|
ruby_cref = top_cref;
|
|
rb_define_global_const("TOPLEVEL_BINDING", rb_f_binding(ruby_top_self));
|
|
#ifdef __MACOS__
|
|
_macruby_init();
|
|
#elif defined(__VMS)
|
|
_vmsruby_init();
|
|
#endif
|
|
ruby_prog_init();
|
|
ALLOW_INTS;
|
|
}
|
|
POP_TAG();
|
|
if (state) {
|
|
error_print();
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
POP_SCOPE();
|
|
ruby_scope = top_scope;
|
|
top_scope->flags &= ~SCOPE_NOSTACK;
|
|
ruby_running = 1;
|
|
}
|
|
|
|
static VALUE
|
|
eval_node(VALUE self, NODE *node)
|
|
{
|
|
if (!node) return Qnil;
|
|
if (nd_type(node) == NODE_PRELUDE) {
|
|
rb_eval(self, node->nd_head);
|
|
node = node->nd_body;
|
|
}
|
|
if (!node) return Qnil;
|
|
return rb_eval(self, node);
|
|
}
|
|
|
|
int ruby_in_eval;
|
|
|
|
static void rb_thread_cleanup(void);
|
|
static void rb_thread_wait_other_threads(void);
|
|
|
|
static int thread_set_raised(void);
|
|
static int thread_reset_raised(void);
|
|
|
|
static VALUE exception_error;
|
|
static VALUE sysstack_error;
|
|
|
|
static int
|
|
sysexit_status(VALUE err)
|
|
{
|
|
VALUE st = rb_iv_get(err, "status");
|
|
return NUM2INT(st);
|
|
}
|
|
|
|
static int
|
|
error_handle(int ex)
|
|
{
|
|
int status = EXIT_FAILURE;
|
|
|
|
if (thread_set_raised()) return EXIT_FAILURE;
|
|
switch (ex & TAG_MASK) {
|
|
case 0:
|
|
status = EXIT_SUCCESS;
|
|
break;
|
|
|
|
case TAG_RETURN:
|
|
error_pos();
|
|
warn_print(": unexpected return\n");
|
|
break;
|
|
case TAG_NEXT:
|
|
error_pos();
|
|
warn_print(": unexpected next\n");
|
|
break;
|
|
case TAG_BREAK:
|
|
error_pos();
|
|
warn_print(": unexpected break\n");
|
|
break;
|
|
case TAG_REDO:
|
|
error_pos();
|
|
warn_print(": unexpected redo\n");
|
|
break;
|
|
case TAG_RETRY:
|
|
error_pos();
|
|
warn_print(": retry outside of rescue clause\n");
|
|
break;
|
|
case TAG_THROW:
|
|
if (prot_tag && prot_tag->frame && prot_tag->frame->node) {
|
|
NODE *tag = prot_tag->frame->node;
|
|
warn_printf("%s:%d: uncaught throw\n",
|
|
tag->nd_file, nd_line(tag));
|
|
}
|
|
else {
|
|
error_pos();
|
|
warn_printf(": unexpected throw\n");
|
|
}
|
|
break;
|
|
case TAG_RAISE:
|
|
case TAG_FATAL:
|
|
if (rb_obj_is_kind_of(ruby_errinfo, rb_eSystemExit)) {
|
|
status = sysexit_status(ruby_errinfo);
|
|
}
|
|
else {
|
|
error_print();
|
|
}
|
|
break;
|
|
default:
|
|
rb_bug("Unknown longjmp status %d", ex);
|
|
break;
|
|
}
|
|
thread_reset_raised();
|
|
return status;
|
|
}
|
|
|
|
void
|
|
ruby_options(int argc, char **argv)
|
|
{
|
|
int state;
|
|
|
|
Init_stack((void*)&state);
|
|
PUSH_THREAD_TAG();
|
|
if ((state = EXEC_TAG()) == 0) {
|
|
ruby_process_options(argc, argv);
|
|
}
|
|
else {
|
|
if (state == TAG_THREAD) {
|
|
rb_thread_start_1();
|
|
}
|
|
trace_func = 0;
|
|
tracing = 0;
|
|
exit(error_handle(state));
|
|
}
|
|
POP_THREAD_TAG();
|
|
}
|
|
|
|
void rb_exec_end_proc(void);
|
|
|
|
static void
|
|
ruby_finalize_0(void)
|
|
{
|
|
PUSH_TAG(PROT_NONE);
|
|
if (EXEC_TAG() == 0) {
|
|
rb_trap_exit();
|
|
}
|
|
POP_TAG();
|
|
rb_exec_end_proc();
|
|
}
|
|
|
|
static void
|
|
ruby_finalize_1(void)
|
|
{
|
|
signal(SIGINT, SIG_DFL);
|
|
ruby_errinfo = 0;
|
|
rb_gc_call_finalizer_at_exit();
|
|
trace_func = 0;
|
|
tracing = 0;
|
|
}
|
|
|
|
void
|
|
ruby_finalize(void)
|
|
{
|
|
ruby_finalize_0();
|
|
ruby_finalize_1();
|
|
}
|
|
|
|
int
|
|
ruby_cleanup(int ex)
|
|
{
|
|
int state;
|
|
volatile VALUE err = ruby_errinfo;
|
|
|
|
ruby_safe_level = 0;
|
|
Init_stack((void*)&state);
|
|
PUSH_THREAD_TAG();
|
|
if ((state = EXEC_TAG()) == 0) {
|
|
ruby_finalize_0();
|
|
if (ruby_errinfo) err = ruby_errinfo;
|
|
rb_thread_cleanup();
|
|
rb_thread_wait_other_threads();
|
|
}
|
|
else if (state == TAG_THREAD) {
|
|
rb_thread_start_1();
|
|
}
|
|
else if (ex == 0) {
|
|
ex = state;
|
|
}
|
|
ruby_errinfo = err;
|
|
ex = error_handle(ex);
|
|
ruby_finalize_1();
|
|
POP_THREAD_TAG();
|
|
|
|
if (err && rb_obj_is_kind_of(err, rb_eSystemExit)) {
|
|
VALUE st = rb_iv_get(err, "status");
|
|
return NUM2INT(st);
|
|
}
|
|
return ex;
|
|
}
|
|
|
|
extern NODE *ruby_eval_tree;
|
|
|
|
static int
|
|
ruby_exec_internal(void)
|
|
{
|
|
int state;
|
|
|
|
PUSH_THREAD_TAG();
|
|
/* default visibility is private at toplevel */
|
|
VIS_SET(VIS_PRIVATE);
|
|
if ((state = EXEC_TAG()) == 0) {
|
|
eval_node(ruby_top_self, ruby_eval_tree);
|
|
}
|
|
else if (state == TAG_THREAD) {
|
|
rb_thread_start_1();
|
|
}
|
|
POP_THREAD_TAG();
|
|
return state;
|
|
}
|
|
|
|
int
|
|
ruby_exec(void)
|
|
{
|
|
volatile NODE *tmp;
|
|
|
|
Init_stack((void*)&tmp);
|
|
return ruby_exec_internal();
|
|
}
|
|
|
|
void
|
|
ruby_stop(int ex)
|
|
{
|
|
exit(ruby_cleanup(ex));
|
|
}
|
|
|
|
void
|
|
ruby_run(void)
|
|
{
|
|
int state;
|
|
static int ex;
|
|
|
|
if (ruby_nerrs > 0) exit(EXIT_FAILURE);
|
|
state = ruby_exec();
|
|
if (state && !ex) ex = state;
|
|
ruby_stop(ex);
|
|
}
|
|
|
|
static void
|
|
compile_error(const char *at)
|
|
{
|
|
VALUE str;
|
|
|
|
ruby_nerrs = 0;
|
|
str = rb_str_buf_new2("compile error");
|
|
if (at) {
|
|
rb_str_buf_cat2(str, " in ");
|
|
rb_str_buf_cat2(str, at);
|
|
}
|
|
rb_str_buf_cat(str, "\n", 1);
|
|
if (!NIL_P(ruby_errinfo)) {
|
|
rb_str_append(str, rb_obj_as_string(ruby_errinfo));
|
|
}
|
|
rb_exc_raise(rb_exc_new3(rb_eSyntaxError, str));
|
|
}
|
|
|
|
VALUE
|
|
rb_eval_string(const char *str)
|
|
{
|
|
VALUE v;
|
|
NODE *oldsrc = ruby_current_node;
|
|
|
|
ruby_current_node = 0;
|
|
ruby_sourcefile = rb_source_filename("(eval)");
|
|
v = eval(ruby_top_self, rb_str_new2(str), Qnil, 0, 0);
|
|
ruby_current_node = oldsrc;
|
|
|
|
return v;
|
|
}
|
|
|
|
VALUE
|
|
rb_eval_string_protect(const char *str, int *state)
|
|
{
|
|
return rb_protect((VALUE (*)(VALUE))rb_eval_string, (VALUE)str, state);
|
|
}
|
|
|
|
VALUE
|
|
rb_eval_string_wrap(const char *str, int *state)
|
|
{
|
|
int status;
|
|
VALUE self = ruby_top_self;
|
|
VALUE wrapper = ruby_wrapper;
|
|
VALUE val;
|
|
|
|
ruby_top_self = rb_obj_clone(ruby_top_self);
|
|
rb_extend_object(ruby_top_self, ruby_wrapper);
|
|
PUSH_FRAME(Qfalse);
|
|
ruby_frame->self = self;
|
|
PUSH_CREF(ruby_wrapper = rb_module_new());
|
|
PUSH_SCOPE();
|
|
|
|
val = rb_eval_string_protect(str, &status);
|
|
ruby_top_self = self;
|
|
|
|
POP_SCOPE();
|
|
POP_FRAME();
|
|
ruby_wrapper = wrapper;
|
|
if (state) {
|
|
*state = status;
|
|
}
|
|
else if (status) {
|
|
JUMP_TAG(status);
|
|
}
|
|
return val;
|
|
}
|
|
|
|
NORETURN(static void localjump_error(const char*, VALUE, int, VALUE));
|
|
static void
|
|
localjump_error(const char *mesg, VALUE value, int reason, VALUE bt)
|
|
{
|
|
VALUE exc = rb_exc_new2(rb_eLocalJumpError, mesg);
|
|
ID id;
|
|
|
|
rb_iv_set(exc, "@exit_value", value);
|
|
switch (reason) {
|
|
case TAG_BREAK:
|
|
id = rb_intern("break"); break;
|
|
case TAG_REDO:
|
|
id = rb_intern("redo"); break;
|
|
case TAG_RETRY:
|
|
id = rb_intern("retry"); break;
|
|
case TAG_NEXT:
|
|
id = rb_intern("next"); break;
|
|
case TAG_RETURN:
|
|
id = rb_intern("return"); break;
|
|
default:
|
|
id = rb_intern("yield"); break;
|
|
}
|
|
rb_iv_set(exc, "@reason", ID2SYM(id));
|
|
if (bt) set_backtrace(exc, bt);
|
|
rb_exc_raise(exc);
|
|
}
|
|
|
|
/*
|
|
* call_seq:
|
|
* local_jump_error.exit_value => obj
|
|
*
|
|
* Returns the exit value associated with this +LocalJumpError+.
|
|
*/
|
|
static VALUE
|
|
localjump_xvalue(VALUE exc)
|
|
{
|
|
return rb_iv_get(exc, "@exit_value");
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* local_jump_error.reason => symbol
|
|
*
|
|
* The reason this block was terminated:
|
|
* :break, :redo, :retry, :next, :return, or :yield.
|
|
*/
|
|
|
|
static VALUE
|
|
localjump_reason(VALUE exc)
|
|
{
|
|
return rb_iv_get(exc, "@reason");
|
|
}
|
|
|
|
NORETURN(static void jump_tag_but_local_jump(int,VALUE));
|
|
static void
|
|
jump_tag_but_local_jump(int state, VALUE val)
|
|
{
|
|
|
|
if (val == Qundef) val = prot_tag->retval;
|
|
switch (state) {
|
|
case 0:
|
|
break;
|
|
case TAG_RETURN:
|
|
localjump_error("unexpected return", val, state, 0);
|
|
break;
|
|
case TAG_BREAK:
|
|
localjump_error("unexpected break", val, state, 0);
|
|
break;
|
|
case TAG_NEXT:
|
|
localjump_error("unexpected next", val, state, 0);
|
|
break;
|
|
case TAG_REDO:
|
|
localjump_error("unexpected redo", Qnil, state, 0);
|
|
break;
|
|
case TAG_RETRY:
|
|
localjump_error("retry outside of rescue clause", Qnil, state, 0);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
JUMP_TAG(state);
|
|
}
|
|
|
|
VALUE
|
|
rb_eval_cmd(VALUE cmd, VALUE arg, int level)
|
|
{
|
|
int state;
|
|
VALUE val = Qnil; /* OK */
|
|
struct SCOPE *saved_scope;
|
|
volatile int safe = ruby_safe_level;
|
|
|
|
if (OBJ_TAINTED(cmd)) {
|
|
level = 4;
|
|
}
|
|
if (TYPE(cmd) != T_STRING) {
|
|
PUSH_TAG(PROT_NONE);
|
|
ruby_safe_level = level;
|
|
if ((state = EXEC_TAG()) == 0) {
|
|
val = rb_funcall2(cmd, rb_intern("yield"),
|
|
RARRAY(arg)->len, RARRAY(arg)->ptr);
|
|
}
|
|
ruby_safe_level = safe;
|
|
POP_TAG();
|
|
if (state) JUMP_TAG(state);
|
|
return val;
|
|
}
|
|
|
|
saved_scope = ruby_scope;
|
|
ruby_scope = top_scope;
|
|
PUSH_FRAME(Qfalse);
|
|
ruby_frame->self = ruby_top_self;
|
|
PUSH_CREF(ruby_wrapper ? ruby_wrapper : rb_cObject);
|
|
|
|
ruby_safe_level = level;
|
|
|
|
PUSH_TAG(PROT_NONE);
|
|
if ((state = EXEC_TAG()) == 0) {
|
|
val = eval(ruby_top_self, cmd, Qnil, 0, 0);
|
|
}
|
|
if (ruby_scope->flags & SCOPE_DONT_RECYCLE)
|
|
scope_dup(saved_scope);
|
|
ruby_scope = saved_scope;
|
|
ruby_safe_level = safe;
|
|
POP_TAG();
|
|
POP_FRAME();
|
|
|
|
jump_tag_but_local_jump(state, val);
|
|
return val;
|
|
}
|
|
|
|
#define ruby_cbase (ruby_cref->nd_clss)
|
|
VALUE
|
|
ruby_current_class_object()
|
|
{
|
|
return ruby_cbase;
|
|
}
|
|
|
|
static VALUE
|
|
ev_const_defined(ID id, VALUE self)
|
|
{
|
|
VALUE cbase = ruby_cbase;
|
|
if (NIL_P(cbase)) cbase = rb_obj_class(self);
|
|
return rb_const_defined_fallback(cbase, id, ruby_cref->nd_next);
|
|
}
|
|
|
|
static VALUE
|
|
ev_const_get(ID id, VALUE self)
|
|
{
|
|
VALUE cbase = ruby_cbase;
|
|
if (NIL_P(cbase)) cbase = rb_obj_class(self);
|
|
return rb_const_get_fallback(cbase, id, ruby_cref->nd_next);
|
|
}
|
|
|
|
static VALUE
|
|
cvar_cbase(void)
|
|
{
|
|
NODE *cref = ruby_cref;
|
|
|
|
while (cref && cref->nd_next && (NIL_P(cref->nd_clss) || FL_TEST(cref->nd_clss, FL_SINGLETON))) {
|
|
cref = cref->nd_next;
|
|
if (!cref->nd_next) {
|
|
rb_warn("class variable access from toplevel singleton method");
|
|
}
|
|
}
|
|
if (NIL_P(cref->nd_clss)) {
|
|
rb_raise(rb_eTypeError, "no class variables available");
|
|
}
|
|
return cref->nd_clss;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* Module.nesting => array
|
|
*
|
|
* Returns the list of +Modules+ nested at the point of call.
|
|
*
|
|
* module M1
|
|
* module M2
|
|
* $a = Module.nesting
|
|
* end
|
|
* end
|
|
* $a #=> [M1::M2, M1]
|
|
* $a[0].name #=> "M1::M2"
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_nesting(void)
|
|
{
|
|
NODE *cbase = ruby_cref;
|
|
VALUE ary = rb_ary_new();
|
|
|
|
while (cbase && cbase->nd_next) {
|
|
if (!NIL_P(cbase->nd_clss)) rb_ary_push(ary, cbase->nd_clss);
|
|
cbase = cbase->nd_next;
|
|
}
|
|
if (ruby_wrapper && RARRAY(ary)->len == 0) {
|
|
rb_ary_push(ary, ruby_wrapper);
|
|
}
|
|
return ary;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* Module.constants => array
|
|
*
|
|
* Returns an array of the names of all constants defined in the
|
|
* system. This list includes the names of all modules and classes.
|
|
*
|
|
* p Module.constants.sort[1..5]
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* ["ARGV", "ArgumentError", "Array", "Bignum", "Binding"]
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_s_constants(void)
|
|
{
|
|
NODE *cbase = ruby_cref;
|
|
void *data = 0;
|
|
|
|
while (cbase) {
|
|
if (!NIL_P(cbase->nd_clss)) {
|
|
data = rb_mod_const_at(cbase->nd_clss, data);
|
|
}
|
|
cbase = cbase->nd_next;
|
|
}
|
|
|
|
if (NIL_P(ruby_cbase)) {
|
|
data = rb_mod_const_of(ruby_cbase, data);
|
|
}
|
|
return rb_const_list(data);
|
|
}
|
|
|
|
void
|
|
rb_frozen_class_p(VALUE klass)
|
|
{
|
|
const char *desc = "something(?!)";
|
|
|
|
if (OBJ_FROZEN(klass)) {
|
|
if (FL_TEST(klass, FL_SINGLETON))
|
|
desc = "object";
|
|
else {
|
|
switch (TYPE(klass)) {
|
|
case T_MODULE:
|
|
case T_ICLASS:
|
|
desc = "module"; break;
|
|
case T_CLASS:
|
|
desc = "class"; break;
|
|
}
|
|
}
|
|
rb_error_frozen(desc);
|
|
}
|
|
}
|
|
|
|
void
|
|
rb_undef(VALUE klass, ID id)
|
|
{
|
|
VALUE origin;
|
|
NODE *body;
|
|
|
|
if (ruby_cbase == rb_cObject && klass == rb_cObject) {
|
|
rb_secure(4);
|
|
}
|
|
if (ruby_safe_level >= 4 && !OBJ_TAINTED(klass)) {
|
|
rb_raise(rb_eSecurityError, "Insecure: can't undef `%s'", rb_id2name(id));
|
|
}
|
|
rb_frozen_class_p(klass);
|
|
if (id == object_id || id == __send || id == __send_bang || id == init) {
|
|
rb_warn("undefining `%s' may cause serious problem", rb_id2name(id));
|
|
}
|
|
body = search_method(klass, id, &origin, LOOKUP_NOSKIP, 0);
|
|
if (!body || !body->nd_body) {
|
|
const char *s0 = " class";
|
|
VALUE c = klass;
|
|
|
|
if (FL_TEST(c, FL_SINGLETON)) {
|
|
VALUE obj = rb_iv_get(klass, "__attached__");
|
|
|
|
switch (TYPE(obj)) {
|
|
case T_MODULE:
|
|
case T_CLASS:
|
|
c = obj;
|
|
s0 = "";
|
|
}
|
|
}
|
|
else if (TYPE(c) == T_MODULE) {
|
|
s0 = " module";
|
|
}
|
|
rb_name_error(id, "undefined method `%s' for%s `%s'",
|
|
rb_id2name(id),s0,rb_class2name(c));
|
|
}
|
|
rb_add_method(klass, id, 0, NOEX_PUBLIC);
|
|
if (FL_TEST(klass, FL_SINGLETON)) {
|
|
rb_funcall(rb_iv_get(klass, "__attached__"),
|
|
singleton_undefined, 1, ID2SYM(id));
|
|
}
|
|
else {
|
|
rb_funcall(klass, undefined, 1, ID2SYM(id));
|
|
}
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* undef_method(symbol) => self
|
|
*
|
|
* Prevents the current class from responding to calls to the named
|
|
* method. Contrast this with <code>remove_method</code>, which deletes
|
|
* the method from the particular class; Ruby will still search
|
|
* superclasses and mixed-in modules for a possible receiver.
|
|
*
|
|
* class Parent
|
|
* def hello
|
|
* puts "In parent"
|
|
* end
|
|
* end
|
|
* class Child < Parent
|
|
* def hello
|
|
* puts "In child"
|
|
* end
|
|
* end
|
|
*
|
|
*
|
|
* c = Child.new
|
|
* c.hello
|
|
*
|
|
*
|
|
* class Child
|
|
* remove_method :hello # remove from child, still in parent
|
|
* end
|
|
* c.hello
|
|
*
|
|
*
|
|
* class Child
|
|
* undef_method :hello # prevent any calls to 'hello'
|
|
* end
|
|
* c.hello
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* In child
|
|
* In parent
|
|
* prog.rb:23: undefined method `hello' for #<Child:0x401b3bb4> (NoMethodError)
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_undef_method(int argc, VALUE *argv, VALUE mod)
|
|
{
|
|
int i;
|
|
|
|
for (i=0; i<argc; i++) {
|
|
rb_undef(mod, rb_to_id(argv[i]));
|
|
}
|
|
return mod;
|
|
}
|
|
|
|
void
|
|
rb_alias(VALUE klass, ID name, ID def)
|
|
{
|
|
VALUE origin;
|
|
NODE *orig, *body, *node;
|
|
VALUE singleton = 0;
|
|
|
|
rb_frozen_class_p(klass);
|
|
if (name == def) return;
|
|
if (klass == rb_cObject) {
|
|
rb_secure(4);
|
|
}
|
|
orig = search_method(klass, def, &origin, LOOKUP_NOSKIP, 0);
|
|
if (!orig || !orig->nd_body) {
|
|
if (TYPE(klass) == T_MODULE) {
|
|
orig = search_method(rb_cObject, def, &origin, LOOKUP_NOSKIP, 0);
|
|
}
|
|
}
|
|
if (!orig || !orig->nd_body) {
|
|
raise_undef(klass, def);
|
|
}
|
|
if (FL_TEST(klass, FL_SINGLETON)) {
|
|
singleton = rb_iv_get(klass, "__attached__");
|
|
}
|
|
body = orig->nd_body;
|
|
orig->nd_cnt++;
|
|
if (nd_type(body) == NODE_FBODY) { /* was alias */
|
|
def = body->nd_mid;
|
|
origin = body->nd_orig;
|
|
body = body->nd_head;
|
|
}
|
|
|
|
rb_clear_cache_by_id(name);
|
|
if (RTEST(ruby_verbose) && st_lookup(RCLASS(klass)->m_tbl, name, (st_data_t *)&node)) {
|
|
if (node->nd_cnt == 0 && node->nd_body) {
|
|
rb_warning("discarding old %s", rb_id2name(name));
|
|
}
|
|
}
|
|
st_insert(RCLASS(klass)->m_tbl, name,
|
|
(st_data_t)NEW_METHOD(NEW_FBODY(body, def, origin),
|
|
NOEX_WITH_SAFE(orig->nd_noex)));
|
|
if (singleton) {
|
|
rb_funcall(singleton, singleton_added, 1, ID2SYM(name));
|
|
}
|
|
else {
|
|
rb_funcall(klass, added, 1, ID2SYM(name));
|
|
}
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* alias_method(new_name, old_name) => self
|
|
*
|
|
* Makes <i>new_name</i> a new copy of the method <i>old_name</i>. This can
|
|
* be used to retain access to methods that are overridden.
|
|
*
|
|
* module Mod
|
|
* alias_method :orig_exit, :exit
|
|
* def exit(code=0)
|
|
* puts "Exiting with code #{code}"
|
|
* orig_exit(code)
|
|
* end
|
|
* end
|
|
* include Mod
|
|
* exit(99)
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* Exiting with code 99
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_alias_method(VALUE mod, VALUE newname, VALUE oldname)
|
|
{
|
|
rb_alias(mod, rb_to_id(newname), rb_to_id(oldname));
|
|
return mod;
|
|
}
|
|
|
|
static NODE*
|
|
copy_node_scope(NODE *node, NODE *rval)
|
|
{
|
|
NODE *cref = NEW_NODE(NODE_CREF,rval->nd_clss,0,rval->nd_next);
|
|
NODE *copy = NEW_NODE(NODE_SCOPE,0,cref,node->nd_next);
|
|
|
|
if (node->nd_tbl) {
|
|
copy->nd_tbl = ALLOC_N(ID, node->nd_tbl[0]+1);
|
|
MEMCPY(copy->nd_tbl, node->nd_tbl, ID, node->nd_tbl[0]+1);
|
|
}
|
|
else {
|
|
copy->nd_tbl = 0;
|
|
}
|
|
return copy;
|
|
}
|
|
|
|
#ifdef C_ALLOCA
|
|
# define TMP_PROTECT NODE * volatile tmp__protect_tmp=0
|
|
# define TMP_ALLOC(n) \
|
|
(tmp__protect_tmp = NEW_NODE(NODE_ALLOCA, \
|
|
ALLOC_N(VALUE,n),tmp__protect_tmp,n), \
|
|
(void*)tmp__protect_tmp->nd_head)
|
|
#else
|
|
# define TMP_PROTECT typedef int foobazzz
|
|
# define TMP_ALLOC(n) ALLOCA_N(VALUE,n)
|
|
#endif
|
|
|
|
#define CALLARGS int argc; VALUE *argv; struct BLOCK *block = 0, _block
|
|
#define SETUP_ARGS0(anode,extra) do {\
|
|
NODE *n = anode, *bpass = 0;\
|
|
if (n && nd_type(n) == NODE_BLOCK_PASS) {\
|
|
bpass = n;\
|
|
n = n->nd_head;\
|
|
}\
|
|
if (!n) {\
|
|
argc = 0;\
|
|
argv = 0;\
|
|
}\
|
|
else if (nd_type(n) == NODE_ARRAY) {\
|
|
argc=n->nd_alen;\
|
|
if (argc > 0) {\
|
|
int i;\
|
|
argv = TMP_ALLOC(argc+extra);\
|
|
for (i=0;i<argc;i++) {\
|
|
argv[i] = rb_eval(self,n->nd_head);\
|
|
n=n->nd_next;\
|
|
}\
|
|
}\
|
|
else {\
|
|
argc = 0;\
|
|
argv = 0;\
|
|
}\
|
|
}\
|
|
else {\
|
|
VALUE args = rb_eval(self,n);\
|
|
if (TYPE(args) != T_ARRAY)\
|
|
args = rb_ary_to_ary(args);\
|
|
argc = RARRAY(args)->len;\
|
|
argv = TMP_ALLOC(argc+extra);\
|
|
MEMCPY(argv, RARRAY(args)->ptr, VALUE, argc);\
|
|
}\
|
|
if (bpass) {\
|
|
volatile VALUE save_block = rb_eval(self, bpass->nd_body); \
|
|
block = passing_block(save_block, &_block);\
|
|
}\
|
|
} while (0)
|
|
|
|
#define SETUP_ARGS(anode) SETUP_ARGS0(anode,0)
|
|
|
|
#define ZSUPER_ARGS() do {\
|
|
argc = ruby_frame->argc;\
|
|
if (argc && DMETHOD_P()) {\
|
|
if (TYPE(RBASIC(ruby_scope)->klass) != T_ARRAY ||\
|
|
RARRAY(RBASIC(ruby_scope)->klass)->len != argc) {\
|
|
rb_raise(rb_eRuntimeError, \
|
|
"super: specify arguments explicitly");\
|
|
}\
|
|
argv = RARRAY(RBASIC(ruby_scope)->klass)->ptr;\
|
|
}\
|
|
else {\
|
|
argv = ruby_scope->local_vars + 2;\
|
|
}\
|
|
} while (0)
|
|
|
|
#define MATCH_DATA *rb_svar(node->nd_cnt)
|
|
|
|
static const char* is_defined(VALUE, NODE*, char*, int);
|
|
|
|
static char*
|
|
arg_defined(VALUE self, NODE *node, char *buf, char *type)
|
|
{
|
|
int argc;
|
|
int i;
|
|
|
|
if (!node) return type; /* no args */
|
|
if (nd_type(node) == NODE_ARRAY) {
|
|
argc=node->nd_alen;
|
|
if (argc > 0) {
|
|
for (i=0;i<argc;i++) {
|
|
if (!is_defined(self, node->nd_head, buf, 0))
|
|
return 0;
|
|
node = node->nd_next;
|
|
}
|
|
}
|
|
}
|
|
else if (!is_defined(self, node, buf, 0)) {
|
|
return 0;
|
|
}
|
|
return type;
|
|
}
|
|
|
|
static const char*
|
|
is_defined(VALUE self, NODE *node /* OK */, char *buf, int noeval)
|
|
{
|
|
VALUE val; /* OK */
|
|
int state, noex;
|
|
static const char *ex = "expression";
|
|
|
|
if (!node) return ex;
|
|
switch (nd_type(node)) {
|
|
case NODE_SUPER:
|
|
case NODE_ZSUPER:
|
|
if (ruby_frame->this_func == 0) return 0;
|
|
else if (ruby_frame->this_class == 0) return 0;
|
|
val = ruby_frame->this_class;
|
|
if (method_exists(RCLASS(val)->super, ruby_frame->this_func, LOOKUP_FCALL)) {
|
|
if (nd_type(node) == NODE_SUPER) {
|
|
return arg_defined(self, node->nd_args, buf, "super");
|
|
}
|
|
return "super";
|
|
}
|
|
break;
|
|
|
|
case NODE_VCALL:
|
|
case NODE_FCALL:
|
|
val = self;
|
|
noex = LOOKUP_FCALL;
|
|
goto check_bound;
|
|
|
|
case NODE_ATTRASGN:
|
|
val = self;
|
|
if (node->nd_recv == (NODE *)1) goto check_bound;
|
|
case NODE_CALL:
|
|
if (!is_defined(self, node->nd_recv, buf, Qtrue)) return 0;
|
|
if (noeval) return ex;
|
|
noex = LOOKUP_NORMAL;
|
|
val = rb_eval(self, node->nd_recv);
|
|
check_bound:
|
|
{
|
|
ID id = node->nd_mid;
|
|
|
|
val = CLASS_OF(val);
|
|
if (!rb_get_method_body(&val, &id, &noex))
|
|
return 0;
|
|
if (nd_type(node) == NODE_CALL) {
|
|
if ((noex & NOEX_PRIVATE)) return 0;
|
|
if ((noex & NOEX_PROTECTED) &&
|
|
!rb_obj_is_kind_of(self, rb_class_real(val)))
|
|
return 0;
|
|
}
|
|
return arg_defined(self, node->nd_args, buf,
|
|
nd_type(node) == NODE_ATTRASGN ?
|
|
"assignment" : "method");
|
|
}
|
|
break;
|
|
|
|
case NODE_MATCH2:
|
|
case NODE_MATCH3:
|
|
return "method";
|
|
|
|
case NODE_YIELD:
|
|
if (rb_block_given_p()) {
|
|
return "yield";
|
|
}
|
|
break;
|
|
|
|
case NODE_SELF:
|
|
return "self";
|
|
|
|
case NODE_NIL:
|
|
return "nil";
|
|
|
|
case NODE_TRUE:
|
|
return "true";
|
|
|
|
case NODE_FALSE:
|
|
return "false";
|
|
|
|
case NODE_ATTRSET:
|
|
case NODE_OP_ASGN1:
|
|
case NODE_OP_ASGN2:
|
|
case NODE_MASGN:
|
|
case NODE_LASGN:
|
|
case NODE_DASGN:
|
|
case NODE_DASGN_CURR:
|
|
case NODE_GASGN:
|
|
case NODE_IASGN:
|
|
case NODE_CDECL:
|
|
case NODE_CVDECL:
|
|
case NODE_CVASGN:
|
|
return "assignment";
|
|
|
|
case NODE_LVAR:
|
|
return "local-variable";
|
|
case NODE_DVAR:
|
|
return "local-variable(in-block)";
|
|
|
|
case NODE_GVAR:
|
|
if (rb_gvar_defined(node->nd_entry)) {
|
|
return "global-variable";
|
|
}
|
|
break;
|
|
|
|
case NODE_IVAR:
|
|
if (rb_ivar_defined(self, node->nd_vid)) {
|
|
return "instance-variable";
|
|
}
|
|
break;
|
|
|
|
case NODE_CONST:
|
|
if (ev_const_defined(node->nd_vid, self)) {
|
|
return "constant";
|
|
}
|
|
break;
|
|
|
|
case NODE_CVAR:
|
|
if (rb_cvar_defined(cvar_cbase(), node->nd_vid)) {
|
|
return "class variable";
|
|
}
|
|
break;
|
|
|
|
case NODE_COLON2:
|
|
if (!is_defined(self, node->nd_recv, buf, Qtrue)) return 0;
|
|
if (noeval) return ex;
|
|
val = rb_eval(self, node->nd_recv);
|
|
switch (TYPE(val)) {
|
|
case T_CLASS:
|
|
case T_MODULE:
|
|
if (rb_const_defined_from(val, node->nd_mid))
|
|
return "constant";
|
|
break;
|
|
default:
|
|
if (rb_method_boundp(CLASS_OF(val), node->nd_mid, Qtrue)) {
|
|
return "method";
|
|
}
|
|
}
|
|
break;
|
|
|
|
case NODE_COLON3:
|
|
if (rb_const_defined_from(rb_cObject, node->nd_mid)) {
|
|
return "constant";
|
|
}
|
|
break;
|
|
|
|
case NODE_NTH_REF:
|
|
if (RTEST(rb_reg_nth_defined(node->nd_nth, MATCH_DATA))) {
|
|
if (!buf) return ex;
|
|
sprintf(buf, "$%d", (int)node->nd_nth);
|
|
return buf;
|
|
}
|
|
break;
|
|
|
|
case NODE_BACK_REF:
|
|
if (RTEST(rb_reg_nth_defined(0, MATCH_DATA))) {
|
|
if (!buf) return ex;
|
|
sprintf(buf, "$%c", (char)node->nd_nth);
|
|
return buf;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
PUSH_TAG(PROT_NONE);
|
|
if ((state = EXEC_TAG()) == 0) {
|
|
rb_eval(self, node);
|
|
}
|
|
POP_TAG();
|
|
if (!state) {
|
|
return ex;
|
|
}
|
|
ruby_errinfo = Qnil;
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int handle_rescue(VALUE,NODE*);
|
|
|
|
static void blk_free(struct BLOCK *data);
|
|
|
|
static VALUE
|
|
rb_obj_is_proc(VALUE proc)
|
|
{
|
|
if (TYPE(proc) == T_DATA && RDATA(proc)->dfree == (RUBY_DATA_FUNC)blk_free) {
|
|
return Qtrue;
|
|
}
|
|
return Qfalse;
|
|
}
|
|
|
|
void
|
|
rb_add_event_hook(rb_event_hook_func_t func, rb_event_t events)
|
|
{
|
|
rb_event_hook_t *hook;
|
|
|
|
hook = ALLOC(rb_event_hook_t);
|
|
hook->func = func;
|
|
hook->events = events;
|
|
hook->next = event_hooks;
|
|
event_hooks = hook;
|
|
}
|
|
|
|
int
|
|
rb_remove_event_hook(rb_event_hook_func_t func)
|
|
{
|
|
|
|
rb_event_hook_t *prev, *hook;
|
|
|
|
prev = NULL;
|
|
hook = event_hooks;
|
|
while (hook) {
|
|
if (hook->func == func) {
|
|
if (prev) {
|
|
prev->next = hook->next;
|
|
}
|
|
else {
|
|
event_hooks = hook->next;
|
|
}
|
|
xfree(hook);
|
|
return 0;
|
|
}
|
|
prev = hook;
|
|
hook = hook->next;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* set_trace_func(proc) => proc
|
|
* set_trace_func(nil) => nil
|
|
*
|
|
* Establishes _proc_ as the handler for tracing, or disables
|
|
* tracing if the parameter is +nil+. _proc_ takes up
|
|
* to six parameters: an event name, a filename, a line number, an
|
|
* object id, a binding, and the name of a class. _proc_ is
|
|
* invoked whenever an event occurs. Events are: <code>c-call</code>
|
|
* (call a C-language routine), <code>c-return</code> (return from a
|
|
* C-language routine), <code>call</code> (call a Ruby method),
|
|
* <code>class</code> (start a class or module definition),
|
|
* <code>end</code> (finish a class or module definition),
|
|
* <code>line</code> (execute code on a new line), <code>raise</code>
|
|
* (raise an exception), and <code>return</code> (return from a Ruby
|
|
* method). Tracing is disabled within the context of _proc_.
|
|
*
|
|
* class Test
|
|
* def test
|
|
* a = 1
|
|
* b = 2
|
|
* end
|
|
* end
|
|
*
|
|
* set_trace_func proc { |event, file, line, id, binding, classname|
|
|
* printf "%8s %s:%-2d %10s %8s\n", event, file, line, id, classname
|
|
* }
|
|
* t = Test.new
|
|
* t.test
|
|
*
|
|
* line prog.rb:11 false
|
|
* c-call prog.rb:11 new Class
|
|
* c-call prog.rb:11 initialize Object
|
|
* c-return prog.rb:11 initialize Object
|
|
* c-return prog.rb:11 new Class
|
|
* line prog.rb:12 false
|
|
* call prog.rb:2 test Test
|
|
* line prog.rb:3 test Test
|
|
* line prog.rb:4 test Test
|
|
* return prog.rb:4 test Test
|
|
*/
|
|
|
|
|
|
static VALUE
|
|
set_trace_func(VALUE obj, VALUE trace)
|
|
{
|
|
rb_event_hook_t *hook;
|
|
|
|
rb_secure(4);
|
|
if (NIL_P(trace)) {
|
|
trace_func = 0;
|
|
rb_remove_event_hook(call_trace_func);
|
|
return Qnil;
|
|
}
|
|
if (!rb_obj_is_proc(trace)) {
|
|
rb_raise(rb_eTypeError, "trace_func needs to be Proc");
|
|
}
|
|
trace_func = trace;
|
|
for (hook = event_hooks; hook; hook = hook->next) {
|
|
if (hook->func == call_trace_func)
|
|
return trace;
|
|
}
|
|
rb_add_event_hook(call_trace_func, RUBY_EVENT_ALL);
|
|
return trace;
|
|
}
|
|
|
|
static const char *
|
|
get_event_name(rb_event_t event)
|
|
{
|
|
switch (event) {
|
|
case RUBY_EVENT_LINE:
|
|
return "line";
|
|
case RUBY_EVENT_CLASS:
|
|
return "class";
|
|
case RUBY_EVENT_END:
|
|
return "end";
|
|
case RUBY_EVENT_CALL:
|
|
return "call";
|
|
case RUBY_EVENT_RETURN:
|
|
return "return";
|
|
case RUBY_EVENT_C_CALL:
|
|
return "c-call";
|
|
case RUBY_EVENT_C_RETURN:
|
|
return "c-return";
|
|
case RUBY_EVENT_RAISE:
|
|
return "raise";
|
|
default:
|
|
return "unknown";
|
|
}
|
|
}
|
|
|
|
static void
|
|
call_trace_func(rb_event_t event, NODE *node, VALUE self, ID id, VALUE klass /* OK */)
|
|
{
|
|
int state, raised;
|
|
struct FRAME *prev;
|
|
NODE *node_save;
|
|
VALUE srcfile;
|
|
const char *event_name;
|
|
|
|
if (!trace_func) return;
|
|
if (tracing) return;
|
|
if (id == ID_ALLOCATOR) return;
|
|
if (!node && ruby_sourceline == 0) return;
|
|
|
|
if (!(node_save = ruby_current_node)) {
|
|
node_save = NEW_BEGIN(0);
|
|
}
|
|
tracing = 1;
|
|
prev = ruby_frame;
|
|
PUSH_FRAME(Qfalse);
|
|
*ruby_frame = *prev;
|
|
ruby_frame->prev = prev;
|
|
|
|
if (node) {
|
|
ruby_current_node = node;
|
|
ruby_frame->node = node;
|
|
ruby_sourcefile = node->nd_file;
|
|
ruby_sourceline = nd_line(node);
|
|
}
|
|
if (klass) {
|
|
if (TYPE(klass) == T_ICLASS) {
|
|
klass = RBASIC(klass)->klass;
|
|
}
|
|
else if (FL_TEST(klass, FL_SINGLETON)) {
|
|
klass = rb_iv_get(klass, "__attached__");
|
|
}
|
|
}
|
|
PUSH_TAG(PROT_NONE);
|
|
raised = thread_reset_raised();
|
|
if ((state = EXEC_TAG()) == 0) {
|
|
srcfile = rb_str_new2(ruby_sourcefile?ruby_sourcefile:"(ruby)");
|
|
event_name = get_event_name(event);
|
|
proc_invoke(trace_func, rb_ary_new3(6, rb_str_new2(event_name),
|
|
srcfile,
|
|
INT2FIX(ruby_sourceline),
|
|
id?ID2SYM(id):Qnil,
|
|
self ? rb_f_binding(self) : Qnil,
|
|
klass?klass:Qnil),
|
|
Qundef, 0, 0);
|
|
}
|
|
if (raised) thread_set_raised();
|
|
POP_TAG();
|
|
POP_FRAME();
|
|
|
|
tracing = 0;
|
|
ruby_current_node = node_save;
|
|
SET_CURRENT_SOURCE();
|
|
if (state) JUMP_TAG(state);
|
|
}
|
|
|
|
static VALUE
|
|
svalue_to_avalue(VALUE v)
|
|
{
|
|
VALUE tmp;
|
|
|
|
if (v == Qundef) return rb_ary_new2(0);
|
|
tmp = rb_check_array_type(v);
|
|
if (NIL_P(tmp)) {
|
|
return rb_ary_new3(1, v);
|
|
}
|
|
return tmp;
|
|
}
|
|
|
|
static VALUE
|
|
class_prefix(VALUE self, NODE *cpath)
|
|
{
|
|
if (!cpath) {
|
|
rb_bug("class path missing");
|
|
}
|
|
if (cpath->nd_head) {
|
|
VALUE c = rb_eval(self, cpath->nd_head);
|
|
switch (TYPE(c)) {
|
|
case T_CLASS:
|
|
case T_MODULE:
|
|
break;
|
|
default:
|
|
rb_raise(rb_eTypeError, "%s is not a class/module",
|
|
RSTRING(rb_obj_as_string(c))->ptr);
|
|
}
|
|
return c;
|
|
}
|
|
else if (nd_type(cpath) == NODE_COLON2) {
|
|
return ruby_cbase;
|
|
}
|
|
else if (ruby_wrapper) {
|
|
return ruby_wrapper;
|
|
}
|
|
else {
|
|
return rb_cObject;
|
|
}
|
|
}
|
|
|
|
#define return_value(v) do {\
|
|
if ((prot_tag->retval = (v)) == Qundef) {\
|
|
prot_tag->retval = Qnil;\
|
|
}\
|
|
} while (0)
|
|
|
|
NORETURN(static void return_jump(VALUE));
|
|
NORETURN(static void break_jump(VALUE));
|
|
NORETURN(static void next_jump(VALUE));
|
|
NORETURN(static void unknown_node(NODE * volatile));
|
|
|
|
static VALUE call_super(int, const VALUE*, struct BLOCK*);
|
|
static VALUE call_super_0(VALUE, VALUE, ID mid, int argc, const VALUE*, struct BLOCK *);
|
|
|
|
static void
|
|
unknown_node(NODE *volatile node)
|
|
{
|
|
ruby_current_node = 0;
|
|
if (node->flags == 0) {
|
|
rb_bug("terminated node (%p)", node);
|
|
}
|
|
else if (BUILTIN_TYPE(node) != T_NODE) {
|
|
rb_bug("not a node 0x%02lx (%p)", BUILTIN_TYPE(node), node);
|
|
}
|
|
else {
|
|
rb_bug("unknown node type %d (%p)", nd_type(node), node);
|
|
}
|
|
}
|
|
|
|
static int
|
|
when_cond(VALUE v1, VALUE v2)
|
|
{
|
|
if (v1 == Qundef) {
|
|
return RTEST(v2);
|
|
}
|
|
return RTEST(rb_funcall2(v2, eqq, 1, &v1));
|
|
}
|
|
|
|
static int
|
|
when_check(NODE *tag, VALUE val, VALUE self)
|
|
{
|
|
VALUE elm;
|
|
long i;
|
|
|
|
switch (nd_type(tag)) {
|
|
case NODE_ARRAY:
|
|
while (tag) {
|
|
elm = rb_eval(self, tag->nd_head);
|
|
if (when_cond(val, elm)) {
|
|
return Qtrue;
|
|
}
|
|
tag = tag->nd_next;
|
|
}
|
|
break;
|
|
case NODE_SPLAT:
|
|
elm = svalue_to_avalue(rb_eval(self, tag->nd_head));
|
|
for (i=0; i<RARRAY(elm)->len; i++) {
|
|
if (when_cond(val, RARRAY(elm)->ptr[i])) {
|
|
return Qtrue;
|
|
}
|
|
}
|
|
break;
|
|
case NODE_ARGSCAT:
|
|
if (when_check(tag->nd_head, val, self)) return Qtrue;
|
|
return when_check(tag->nd_body, val, self);
|
|
case NODE_ARGSPUSH:
|
|
if (when_check(tag->nd_head, val, self)) return Qtrue;
|
|
if (when_cond(val, rb_eval(self, tag->nd_body))) return Qtrue;
|
|
default:
|
|
if (when_cond(val, rb_eval(self, tag))) return Qtrue;
|
|
break;
|
|
}
|
|
return Qfalse;
|
|
}
|
|
|
|
static VALUE
|
|
rb_eval(VALUE self, NODE *n)
|
|
{
|
|
NODE * volatile contnode = 0;
|
|
NODE * volatile node = n;
|
|
int state;
|
|
volatile VALUE result = Qnil;
|
|
|
|
#define RETURN(v) do { \
|
|
result = (v); \
|
|
goto finish; \
|
|
} while (0)
|
|
|
|
again:
|
|
if (!node) RETURN(Qnil);
|
|
|
|
ruby_current_node = node;
|
|
if (node->flags & NODE_NEWLINE) {
|
|
EXEC_EVENT_HOOK(RUBY_EVENT_LINE, node, self,
|
|
ruby_frame->this_func,
|
|
ruby_frame->this_class);
|
|
}
|
|
switch (nd_type(node)) {
|
|
case NODE_BLOCK:
|
|
if (contnode) {
|
|
result = rb_eval(self, node);
|
|
break;
|
|
}
|
|
contnode = node->nd_next;
|
|
node = node->nd_head;
|
|
goto again;
|
|
|
|
case NODE_POSTEXE:
|
|
PUSH_FRAME(Qtrue);
|
|
PUSH_BLOCK(ruby_frame->block, 0, node->nd_body);
|
|
rb_f_END();
|
|
POP_BLOCK();
|
|
POP_FRAME();
|
|
nd_set_type(node, NODE_NIL); /* exec just once */
|
|
result = Qnil;
|
|
break;
|
|
|
|
/* begin .. end without clauses */
|
|
case NODE_BEGIN:
|
|
node = node->nd_body;
|
|
goto again;
|
|
|
|
/* nodes for speed-up(default match) */
|
|
case NODE_MATCH:
|
|
result = rb_reg_match2(node->nd_lit);
|
|
break;
|
|
|
|
/* nodes for speed-up(literal match) */
|
|
case NODE_MATCH2:
|
|
{
|
|
VALUE l = rb_eval(self,node->nd_recv);
|
|
VALUE r = rb_eval(self,node->nd_value);
|
|
result = rb_reg_match(l, r);
|
|
}
|
|
break;
|
|
|
|
/* nodes for speed-up(literal match) */
|
|
case NODE_MATCH3:
|
|
{
|
|
VALUE r = rb_eval(self,node->nd_recv);
|
|
VALUE l = rb_eval(self,node->nd_value);
|
|
if (TYPE(l) == T_STRING) {
|
|
result = rb_reg_match(r, l);
|
|
}
|
|
else {
|
|
result = rb_funcall(l, match, 1, r);
|
|
}
|
|
}
|
|
break;
|
|
|
|
/* node for speed-up(top-level loop for -n/-p) */
|
|
case NODE_OPT_N:
|
|
PUSH_TAG(PROT_LOOP);
|
|
switch (state = EXEC_TAG()) {
|
|
case 0:
|
|
opt_n_next:
|
|
while (!NIL_P(rb_gets())) {
|
|
opt_n_redo:
|
|
rb_eval(self, node->nd_body);
|
|
}
|
|
break;
|
|
|
|
case TAG_REDO:
|
|
state = 0;
|
|
goto opt_n_redo;
|
|
case TAG_NEXT:
|
|
state = 0;
|
|
goto opt_n_next;
|
|
case TAG_BREAK:
|
|
state = 0;
|
|
default:
|
|
break;
|
|
}
|
|
POP_TAG();
|
|
if (state) JUMP_TAG(state);
|
|
RETURN(Qnil);
|
|
|
|
case NODE_SELF:
|
|
RETURN(self);
|
|
|
|
case NODE_NIL:
|
|
RETURN(Qnil);
|
|
|
|
case NODE_TRUE:
|
|
RETURN(Qtrue);
|
|
|
|
case NODE_FALSE:
|
|
RETURN(Qfalse);
|
|
|
|
case NODE_ERRINFO:
|
|
RETURN(ruby_errinfo);
|
|
|
|
case NODE_IF:
|
|
EXEC_EVENT_HOOK(RUBY_EVENT_LINE, node, self,
|
|
ruby_frame->this_func,
|
|
ruby_frame->this_class);
|
|
if (RTEST(rb_eval(self, node->nd_cond))) {
|
|
node = node->nd_body;
|
|
}
|
|
else {
|
|
node = node->nd_else;
|
|
}
|
|
goto again;
|
|
|
|
case NODE_WHEN:
|
|
while (node) {
|
|
if (nd_type(node) != NODE_WHEN) goto again;
|
|
EXEC_EVENT_HOOK(RUBY_EVENT_LINE, node->nd_head, self,
|
|
ruby_frame->this_func,
|
|
ruby_frame->this_class);
|
|
if (when_check(node->nd_head, Qundef, self)) {
|
|
node = node->nd_body;
|
|
goto again;
|
|
}
|
|
node = node->nd_next;
|
|
}
|
|
RETURN(Qnil);
|
|
|
|
case NODE_CASE:
|
|
{
|
|
VALUE val;
|
|
|
|
val = rb_eval(self, node->nd_head);
|
|
node = node->nd_body;
|
|
while (node) {
|
|
if (nd_type(node) != NODE_WHEN) {
|
|
goto again;
|
|
}
|
|
EXEC_EVENT_HOOK(RUBY_EVENT_LINE, node->nd_head, self,
|
|
ruby_frame->this_func,
|
|
ruby_frame->this_class);
|
|
if (when_check(node->nd_head, val, self)) {
|
|
node = node->nd_body;
|
|
goto again;
|
|
}
|
|
node = node->nd_next;
|
|
}
|
|
}
|
|
RETURN(Qnil);
|
|
|
|
case NODE_WHILE:
|
|
PUSH_TAG(PROT_LOOP);
|
|
result = Qnil;
|
|
switch (state = EXEC_TAG()) {
|
|
case 0:
|
|
if (node->nd_state && !RTEST(rb_eval(self, node->nd_cond)))
|
|
goto while_out;
|
|
do {
|
|
while_redo:
|
|
rb_eval(self, node->nd_body);
|
|
while_next:
|
|
;
|
|
} while (RTEST(rb_eval(self, node->nd_cond)));
|
|
break;
|
|
|
|
case TAG_REDO:
|
|
state = 0;
|
|
goto while_redo;
|
|
case TAG_NEXT:
|
|
state = 0;
|
|
goto while_next;
|
|
case TAG_BREAK:
|
|
if (TAG_DST()) {
|
|
state = 0;
|
|
result = prot_tag->retval;
|
|
}
|
|
/* fall through */
|
|
default:
|
|
break;
|
|
}
|
|
while_out:
|
|
POP_TAG();
|
|
if (state) JUMP_TAG(state);
|
|
RETURN(result);
|
|
|
|
case NODE_UNTIL:
|
|
PUSH_TAG(PROT_LOOP);
|
|
result = Qnil;
|
|
switch (state = EXEC_TAG()) {
|
|
case 0:
|
|
if (node->nd_state && RTEST(rb_eval(self, node->nd_cond)))
|
|
goto until_out;
|
|
do {
|
|
until_redo:
|
|
rb_eval(self, node->nd_body);
|
|
until_next:
|
|
;
|
|
} while (!RTEST(rb_eval(self, node->nd_cond)));
|
|
break;
|
|
|
|
case TAG_REDO:
|
|
state = 0;
|
|
goto until_redo;
|
|
case TAG_NEXT:
|
|
state = 0;
|
|
goto until_next;
|
|
case TAG_BREAK:
|
|
if (TAG_DST()) {
|
|
state = 0;
|
|
result = prot_tag->retval;
|
|
}
|
|
/* fall through */
|
|
default:
|
|
break;
|
|
}
|
|
until_out:
|
|
POP_TAG();
|
|
if (state) JUMP_TAG(state);
|
|
RETURN(result);
|
|
|
|
case NODE_LAMBDA:
|
|
PUSH_TAG(PROT_LOOP);
|
|
PUSH_FRAME(Qtrue);
|
|
PUSH_BLOCK(ruby_frame->block, node->nd_var, node->nd_body);
|
|
state = EXEC_TAG();
|
|
result = proc_lambda();
|
|
POP_BLOCK();
|
|
POP_FRAME();
|
|
POP_TAG();
|
|
break;
|
|
|
|
case NODE_BREAK:
|
|
break_jump(rb_eval(self, node->nd_stts));
|
|
break;
|
|
|
|
case NODE_NEXT:
|
|
CHECK_INTS;
|
|
next_jump(rb_eval(self, node->nd_stts));
|
|
break;
|
|
|
|
case NODE_REDO:
|
|
CHECK_INTS;
|
|
JUMP_TAG(TAG_REDO);
|
|
break;
|
|
|
|
case NODE_RETRY:
|
|
CHECK_INTS;
|
|
JUMP_TAG(TAG_RETRY);
|
|
break;
|
|
|
|
case NODE_SPLAT:
|
|
result = svalue_to_avalue(rb_eval(self, node->nd_head));
|
|
break;
|
|
|
|
case NODE_TO_ARY:
|
|
result = rb_ary_to_ary(rb_eval(self, node->nd_head));
|
|
break;
|
|
|
|
case NODE_YIELD:
|
|
if (node->nd_head) {
|
|
result = rb_eval(self, node->nd_head);
|
|
ruby_current_node = node;
|
|
}
|
|
else {
|
|
result = Qundef; /* no arg */
|
|
}
|
|
SET_CURRENT_SOURCE();
|
|
result = rb_yield_0(result, 0, 0, 0);
|
|
break;
|
|
|
|
case NODE_RESCUE:
|
|
{
|
|
volatile VALUE e_info = ruby_errinfo;
|
|
volatile int rescuing = 0;
|
|
|
|
PUSH_TAG(PROT_NONE);
|
|
if ((state = EXEC_TAG()) == 0) {
|
|
retry_entry:
|
|
result = rb_eval(self, node->nd_head);
|
|
}
|
|
else if (rescuing) {
|
|
if (rescuing < 0) {
|
|
/* in rescue argument, just reraise */
|
|
}
|
|
else if (state == TAG_RETRY) {
|
|
rescuing = state = 0;
|
|
ruby_errinfo = e_info;
|
|
goto retry_entry;
|
|
}
|
|
else if (state != TAG_RAISE) {
|
|
result = prot_tag->retval;
|
|
}
|
|
}
|
|
else if (state == TAG_RAISE) {
|
|
NODE *resq = node->nd_resq;
|
|
|
|
rescuing = -1;
|
|
while (resq) {
|
|
ruby_current_node = resq;
|
|
if (handle_rescue(self, resq)) {
|
|
state = 0;
|
|
rescuing = 1;
|
|
result = rb_eval(self, resq->nd_body);
|
|
break;
|
|
}
|
|
resq = resq->nd_head; /* next rescue */
|
|
}
|
|
}
|
|
else {
|
|
result = prot_tag->retval;
|
|
}
|
|
POP_TAG();
|
|
if (state != TAG_RAISE) ruby_errinfo = e_info;
|
|
if (state) {
|
|
JUMP_TAG(state);
|
|
}
|
|
/* no exception raised */
|
|
if (!rescuing && (node = node->nd_else)) { /* else clause given */
|
|
goto again;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case NODE_ENSURE:
|
|
PUSH_TAG(PROT_NONE);
|
|
if ((state = EXEC_TAG()) == 0) {
|
|
result = rb_eval(self, node->nd_head);
|
|
}
|
|
POP_TAG();
|
|
if (node->nd_ensr) {
|
|
VALUE retval = prot_tag->retval; /* save retval */
|
|
VALUE errinfo = ruby_errinfo;
|
|
|
|
rb_eval(self, node->nd_ensr);
|
|
return_value(retval);
|
|
ruby_errinfo = errinfo;
|
|
}
|
|
if (state) JUMP_TAG(state);
|
|
break;
|
|
|
|
case NODE_AND:
|
|
result = rb_eval(self, node->nd_1st);
|
|
if (!RTEST(result)) break;
|
|
node = node->nd_2nd;
|
|
goto again;
|
|
|
|
case NODE_OR:
|
|
result = rb_eval(self, node->nd_1st);
|
|
if (RTEST(result)) break;
|
|
node = node->nd_2nd;
|
|
goto again;
|
|
|
|
case NODE_NOT:
|
|
if (RTEST(rb_eval(self, node->nd_body))) result = Qfalse;
|
|
else result = Qtrue;
|
|
break;
|
|
|
|
case NODE_DOT2:
|
|
case NODE_DOT3:
|
|
{
|
|
VALUE beg = rb_eval(self, node->nd_beg);
|
|
VALUE end = rb_eval(self, node->nd_end);
|
|
result = rb_range_new(beg, end, nd_type(node) == NODE_DOT3);
|
|
}
|
|
break;
|
|
|
|
case NODE_FLIP2: /* like AWK */
|
|
{
|
|
VALUE *flip = rb_svar(node->nd_cnt);
|
|
if (!flip) rb_bug("unexpected local variable");
|
|
if (!RTEST(*flip)) {
|
|
if (RTEST(rb_eval(self, node->nd_beg))) {
|
|
*flip = RTEST(rb_eval(self, node->nd_end))?Qfalse:Qtrue;
|
|
result = Qtrue;
|
|
}
|
|
else {
|
|
result = Qfalse;
|
|
}
|
|
}
|
|
else {
|
|
if (RTEST(rb_eval(self, node->nd_end))) {
|
|
*flip = Qfalse;
|
|
}
|
|
result = Qtrue;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case NODE_FLIP3: /* like SED */
|
|
{
|
|
VALUE *flip = rb_svar(node->nd_cnt);
|
|
if (!flip) rb_bug("unexpected local variable");
|
|
if (!RTEST(*flip)) {
|
|
result = RTEST(rb_eval(self, node->nd_beg)) ? Qtrue : Qfalse;
|
|
*flip = result;
|
|
}
|
|
else {
|
|
if (RTEST(rb_eval(self, node->nd_end))) {
|
|
*flip = Qfalse;
|
|
}
|
|
result = Qtrue;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case NODE_RETURN:
|
|
return_jump(rb_eval(self, node->nd_stts));
|
|
break;
|
|
|
|
case NODE_ARGSCAT:
|
|
{
|
|
VALUE args = rb_eval(self, node->nd_head);
|
|
result = rb_ary_concat(args, svalue_to_avalue(rb_eval(self, node->nd_body)));
|
|
}
|
|
break;
|
|
|
|
case NODE_ARGSPUSH:
|
|
{
|
|
VALUE args = rb_ary_dup(rb_eval(self, node->nd_head));
|
|
result = rb_ary_push(args, rb_eval(self, node->nd_body));
|
|
}
|
|
break;
|
|
|
|
case NODE_ATTRASGN:
|
|
{
|
|
VALUE recv;
|
|
calling_scope_t scope;
|
|
CALLARGS;
|
|
TMP_PROTECT;
|
|
|
|
if (node->nd_recv == (NODE *)1) {
|
|
recv = self;
|
|
scope = CALLING_FCALL;
|
|
}
|
|
else {
|
|
recv = rb_eval(self, node->nd_recv);
|
|
scope = CALLING_NORMAL;
|
|
}
|
|
SETUP_ARGS(node->nd_args);
|
|
|
|
ruby_current_node = node;
|
|
SET_CURRENT_SOURCE();
|
|
rb_call(CLASS_OF(recv),recv,node->nd_mid,argc,argv,block,scope,0);
|
|
result = argv[argc-1];
|
|
}
|
|
break;
|
|
|
|
case NODE_FOR:
|
|
{
|
|
VALUE recv;
|
|
int state;
|
|
struct BLOCK *block;
|
|
|
|
PUSH_TAG(PROT_LOOP);
|
|
PUSH_BLOCK(block, node->nd_var, node->nd_body);
|
|
state = EXEC_TAG();
|
|
if (state == 0) {
|
|
for_retry:
|
|
block->flags &= ~BLOCK_D_SCOPE;
|
|
recv = rb_eval(self, node->nd_iter);
|
|
ruby_current_node = node;
|
|
SET_CURRENT_SOURCE();
|
|
result = rb_call(CLASS_OF(recv),recv,each,0,0,block,CALLING_NORMAL,1);
|
|
}
|
|
else if (state == TAG_BREAK && TAG_DST()) {
|
|
result = prot_tag->retval;
|
|
state = 0;
|
|
}
|
|
else if (state == TAG_RETRY) {
|
|
state = 0;
|
|
goto for_retry;
|
|
}
|
|
POP_BLOCK();
|
|
POP_TAG();
|
|
if (state) JUMP_TAG(state);
|
|
}
|
|
break;
|
|
|
|
case NODE_ITER:
|
|
{
|
|
VALUE recv = self;
|
|
calling_scope_t scope;
|
|
struct BLOCK *block_given;
|
|
|
|
PUSH_TAG(PROT_LOOP);
|
|
PUSH_BLOCK(block_given, node->nd_var, node->nd_body);
|
|
node = node->nd_iter; /* should be NODE_CALL */
|
|
switch (nd_type(node)) {
|
|
case NODE_CALL:
|
|
scope = CALLING_NORMAL; break;
|
|
case NODE_FCALL:
|
|
scope = CALLING_FCALL; break;
|
|
case NODE_VCALL:
|
|
scope = CALLING_VCALL; break;
|
|
case NODE_SUPER:
|
|
case NODE_ZSUPER:
|
|
scope = CALLING_SUPER; break;
|
|
default:
|
|
/* error! */
|
|
unknown_node(node);
|
|
}
|
|
state = EXEC_TAG();
|
|
if (state == 0) {
|
|
CALLARGS;
|
|
TMP_PROTECT;
|
|
|
|
iter_retry:
|
|
if (scope == CALLING_NORMAL) {
|
|
recv = rb_eval(self, node->nd_recv);
|
|
}
|
|
if (nd_type(node) == NODE_ZSUPER) {
|
|
ZSUPER_ARGS();
|
|
}
|
|
else {
|
|
SETUP_ARGS(node->nd_args);
|
|
ruby_current_node = node;
|
|
}
|
|
SET_CURRENT_SOURCE();
|
|
switch (scope) {
|
|
case CALLING_SUPER:
|
|
result = call_super(argc, argv, block_given);
|
|
break;
|
|
default:
|
|
result = rb_call(CLASS_OF(recv),recv,node->nd_mid,
|
|
argc,argv,block_given,scope,1);
|
|
break;
|
|
}
|
|
}
|
|
else if (state == TAG_BREAK && TAG_DST()) {
|
|
result = prot_tag->retval;
|
|
state = 0;
|
|
}
|
|
else if (state == TAG_RETRY) {
|
|
state = 0;
|
|
goto iter_retry;
|
|
}
|
|
POP_BLOCK();
|
|
POP_TAG();
|
|
if (state) JUMP_TAG(state);
|
|
}
|
|
break;
|
|
|
|
case NODE_CALL:
|
|
{
|
|
VALUE recv;
|
|
CALLARGS;
|
|
TMP_PROTECT;
|
|
|
|
recv = rb_eval(self, node->nd_recv);
|
|
SETUP_ARGS(node->nd_args);
|
|
|
|
ruby_current_node = node;
|
|
SET_CURRENT_SOURCE();
|
|
result = rb_call(CLASS_OF(recv),recv,node->nd_mid,argc,argv,
|
|
block,CALLING_NORMAL,0);
|
|
}
|
|
break;
|
|
|
|
case NODE_FCALL:
|
|
{
|
|
CALLARGS;
|
|
TMP_PROTECT;
|
|
|
|
SETUP_ARGS(node->nd_args);
|
|
|
|
ruby_current_node = node;
|
|
SET_CURRENT_SOURCE();
|
|
result = rb_call(CLASS_OF(self),self,node->nd_mid,argc,argv,
|
|
block,CALLING_FCALL,0);
|
|
}
|
|
break;
|
|
|
|
case NODE_VCALL:
|
|
SET_CURRENT_SOURCE();
|
|
result = rb_call(CLASS_OF(self),self,node->nd_mid,0,0,0,CALLING_VCALL,0);
|
|
break;
|
|
|
|
case NODE_SUPER:
|
|
case NODE_ZSUPER:
|
|
{
|
|
CALLARGS;
|
|
TMP_PROTECT;
|
|
|
|
if (ruby_frame->this_class == 0) {
|
|
if (ruby_frame->this_func) {
|
|
rb_name_error(ruby_frame->callee,
|
|
"superclass method `%s' disabled",
|
|
rb_id2name(ruby_frame->this_func));
|
|
}
|
|
else {
|
|
rb_raise(rb_eNoMethodError, "super called outside of method");
|
|
}
|
|
}
|
|
if (nd_type(node) == NODE_ZSUPER) {
|
|
ZSUPER_ARGS();
|
|
SET_CURRENT_SOURCE();
|
|
result = rb_call_super(argc, argv);
|
|
}
|
|
else {
|
|
SETUP_ARGS(node->nd_args);
|
|
ruby_current_node = node;
|
|
SET_CURRENT_SOURCE();
|
|
result = call_super(argc, argv, block);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case NODE_SCOPE:
|
|
{
|
|
struct FRAME frame;
|
|
NODE *saved_cref = 0;
|
|
|
|
frame = *ruby_frame;
|
|
frame.tmp = ruby_frame;
|
|
ruby_frame = &frame;
|
|
|
|
PUSH_SCOPE();
|
|
PUSH_TAG(PROT_NONE);
|
|
if (node->nd_rval) {
|
|
saved_cref = ruby_cref;
|
|
ruby_cref = (NODE*)node->nd_rval;
|
|
}
|
|
if (node->nd_tbl) {
|
|
VALUE *vars = ALLOCA_N(VALUE, node->nd_tbl[0]+1);
|
|
*vars++ = (VALUE)node;
|
|
ruby_scope->local_vars = vars;
|
|
rb_mem_clear(ruby_scope->local_vars, node->nd_tbl[0]);
|
|
ruby_scope->local_tbl = node->nd_tbl;
|
|
}
|
|
else {
|
|
ruby_scope->local_vars = 0;
|
|
ruby_scope->local_tbl = 0;
|
|
}
|
|
if ((state = EXEC_TAG()) == 0) {
|
|
result = rb_eval(self, node->nd_next);
|
|
}
|
|
POP_TAG();
|
|
POP_SCOPE();
|
|
ruby_frame = frame.tmp;
|
|
if (saved_cref)
|
|
ruby_cref = saved_cref;
|
|
if (state) JUMP_TAG(state);
|
|
}
|
|
break;
|
|
|
|
case NODE_OP_ASGN1:
|
|
{
|
|
CALLARGS;
|
|
VALUE recv, val, tmp;
|
|
NODE *rval;
|
|
TMP_PROTECT;
|
|
|
|
recv = rb_eval(self, node->nd_recv);
|
|
rval = node->nd_args->nd_head;
|
|
SETUP_ARGS0(node->nd_args->nd_body,1);
|
|
val = rb_funcall3(recv, aref, argc, argv);
|
|
switch (node->nd_mid) {
|
|
case 0: /* OR */
|
|
if (RTEST(val)) RETURN(val);
|
|
val = rb_eval(self, rval);
|
|
break;
|
|
case 1: /* AND */
|
|
if (!RTEST(val)) RETURN(val);
|
|
val = rb_eval(self, rval);
|
|
break;
|
|
default:
|
|
tmp = rb_eval(self, rval);
|
|
val = rb_funcall3(val, node->nd_mid, 1, &tmp);
|
|
}
|
|
argv[argc] = val;
|
|
rb_funcall3(recv, aset, argc+1, argv);
|
|
result = val;
|
|
}
|
|
break;
|
|
|
|
case NODE_OP_ASGN2:
|
|
{
|
|
ID id = node->nd_next->nd_vid;
|
|
VALUE recv, val, tmp;
|
|
|
|
recv = rb_eval(self, node->nd_recv);
|
|
val = rb_funcall3(recv, id, 0, 0);
|
|
switch (node->nd_next->nd_mid) {
|
|
case 0: /* OR */
|
|
if (RTEST(val)) RETURN(val);
|
|
val = rb_eval(self, node->nd_value);
|
|
break;
|
|
case 1: /* AND */
|
|
if (!RTEST(val)) RETURN(val);
|
|
val = rb_eval(self, node->nd_value);
|
|
break;
|
|
default:
|
|
tmp = rb_eval(self, node->nd_value);
|
|
val = rb_funcall3(val, node->nd_next->nd_mid, 1, &tmp);
|
|
}
|
|
|
|
rb_funcall3(recv, node->nd_next->nd_aid, 1, &val);
|
|
result = val;
|
|
}
|
|
break;
|
|
|
|
case NODE_OP_ASGN_AND:
|
|
result = rb_eval(self, node->nd_head);
|
|
if (!RTEST(result)) break;
|
|
node = node->nd_value;
|
|
goto again;
|
|
|
|
case NODE_OP_ASGN_OR:
|
|
if ((node->nd_aid && !is_defined(self, node->nd_head, 0, 0)) ||
|
|
!RTEST(result = rb_eval(self, node->nd_head))) {
|
|
node = node->nd_value;
|
|
goto again;
|
|
}
|
|
break;
|
|
|
|
case NODE_MASGN:
|
|
result = massign(self, node, rb_eval(self, node->nd_value), 0);
|
|
break;
|
|
|
|
case NODE_LASGN:
|
|
if (ruby_scope->local_vars == 0)
|
|
rb_bug("unexpected local variable assignment");
|
|
result = rb_eval(self, node->nd_value);
|
|
ruby_scope->local_vars[node->nd_cnt] = result;
|
|
break;
|
|
|
|
case NODE_DASGN:
|
|
result = rb_eval(self, node->nd_value);
|
|
dvar_asgn(node->nd_vid, result);
|
|
break;
|
|
|
|
case NODE_DASGN_CURR:
|
|
result = rb_eval(self, node->nd_value);
|
|
dvar_asgn_curr(node->nd_vid, result);
|
|
break;
|
|
|
|
case NODE_GASGN:
|
|
result = rb_eval(self, node->nd_value);
|
|
rb_gvar_set(node->nd_entry, result);
|
|
break;
|
|
|
|
case NODE_IASGN:
|
|
result = rb_eval(self, node->nd_value);
|
|
rb_ivar_set(self, node->nd_vid, result);
|
|
break;
|
|
|
|
case NODE_CDECL:
|
|
result = rb_eval(self, node->nd_value);
|
|
if (node->nd_vid == 0) {
|
|
rb_const_set(class_prefix(self, node->nd_else), node->nd_else->nd_mid, result);
|
|
}
|
|
else {
|
|
rb_const_set(ruby_cbase, node->nd_vid, result);
|
|
}
|
|
break;
|
|
|
|
case NODE_CVDECL:
|
|
if (NIL_P(ruby_cbase)) {
|
|
rb_raise(rb_eTypeError, "no class/module to define class variable");
|
|
}
|
|
result = rb_eval(self, node->nd_value);
|
|
rb_cvar_set(cvar_cbase(), node->nd_vid, result, Qtrue);
|
|
break;
|
|
|
|
case NODE_CVASGN:
|
|
result = rb_eval(self, node->nd_value);
|
|
rb_cvar_set(cvar_cbase(), node->nd_vid, result, Qfalse);
|
|
break;
|
|
|
|
case NODE_LVAR:
|
|
if (ruby_scope->local_vars == 0) {
|
|
rb_bug("unexpected local variable");
|
|
}
|
|
result = ruby_scope->local_vars[node->nd_cnt];
|
|
break;
|
|
|
|
case NODE_DVAR:
|
|
result = rb_dvar_ref(node->nd_vid);
|
|
break;
|
|
|
|
case NODE_GVAR:
|
|
result = rb_gvar_get(node->nd_entry);
|
|
break;
|
|
|
|
case NODE_IVAR:
|
|
result = rb_ivar_get(self, node->nd_vid);
|
|
break;
|
|
|
|
case NODE_CONST:
|
|
result = ev_const_get(node->nd_vid, self);
|
|
break;
|
|
|
|
case NODE_CVAR:
|
|
result = rb_cvar_get(cvar_cbase(), node->nd_vid);
|
|
break;
|
|
|
|
case NODE_BLOCK_ARG:
|
|
if (ruby_scope->local_vars == 0)
|
|
rb_bug("unexpected block argument");
|
|
if (rb_block_given_p()) {
|
|
result = rb_block_proc();
|
|
ruby_scope->local_vars[node->nd_cnt] = result;
|
|
}
|
|
else {
|
|
result = Qnil;
|
|
}
|
|
break;
|
|
|
|
case NODE_COLON2:
|
|
{
|
|
VALUE klass;
|
|
|
|
klass = rb_eval(self, node->nd_head);
|
|
if (rb_is_const_id(node->nd_mid)) {
|
|
switch (TYPE(klass)) {
|
|
case T_CLASS:
|
|
case T_MODULE:
|
|
result = rb_const_get_from(klass, node->nd_mid);
|
|
break;
|
|
default:
|
|
rb_raise(rb_eTypeError, "%s is not a class/module",
|
|
RSTRING(rb_obj_as_string(klass))->ptr);
|
|
break;
|
|
}
|
|
}
|
|
else {
|
|
result = rb_funcall(klass, node->nd_mid, 0, 0);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case NODE_COLON3:
|
|
result = rb_const_get_from(rb_cObject, node->nd_mid);
|
|
break;
|
|
|
|
case NODE_NTH_REF:
|
|
result = rb_reg_nth_match(node->nd_nth, MATCH_DATA);
|
|
break;
|
|
|
|
case NODE_BACK_REF:
|
|
switch (node->nd_nth) {
|
|
case '&':
|
|
result = rb_reg_last_match(MATCH_DATA);
|
|
break;
|
|
case '`':
|
|
result = rb_reg_match_pre(MATCH_DATA);
|
|
break;
|
|
case '\'':
|
|
result = rb_reg_match_post(MATCH_DATA);
|
|
break;
|
|
case '+':
|
|
result = rb_reg_match_last(MATCH_DATA);
|
|
break;
|
|
default:
|
|
rb_bug("unexpected back-ref");
|
|
}
|
|
break;
|
|
|
|
case NODE_HASH:
|
|
{
|
|
NODE *list;
|
|
VALUE hash = rb_hash_new();
|
|
VALUE key, val;
|
|
|
|
list = node->nd_head;
|
|
while (list) {
|
|
key = rb_eval(self, list->nd_head);
|
|
list = list->nd_next;
|
|
if (list == 0)
|
|
rb_bug("odd number list for Hash");
|
|
val = rb_eval(self, list->nd_head);
|
|
list = list->nd_next;
|
|
rb_hash_aset(hash, key, val);
|
|
}
|
|
result = hash;
|
|
}
|
|
break;
|
|
|
|
case NODE_ZARRAY: /* zero length list */
|
|
result = rb_ary_new();
|
|
break;
|
|
|
|
case NODE_ARRAY:
|
|
{
|
|
VALUE ary;
|
|
long i;
|
|
|
|
i = node->nd_alen;
|
|
ary = rb_ary_new2(i);
|
|
for (i=0;node;node=node->nd_next) {
|
|
RARRAY(ary)->ptr[i++] = rb_eval(self, node->nd_head);
|
|
RARRAY(ary)->len = i;
|
|
}
|
|
|
|
result = ary;
|
|
}
|
|
break;
|
|
|
|
case NODE_VALUES:
|
|
{
|
|
VALUE val;
|
|
long i;
|
|
|
|
i = node->nd_alen;
|
|
val = rb_ary_new2(i);
|
|
for (i=0;node;node=node->nd_next) {
|
|
RARRAY(val)->ptr[i++] = rb_eval(self, node->nd_head);
|
|
RARRAY(val)->len = i;
|
|
}
|
|
|
|
result = val;
|
|
}
|
|
break;
|
|
|
|
case NODE_STR:
|
|
result = rb_str_new3(node->nd_lit);
|
|
break;
|
|
|
|
case NODE_EVSTR:
|
|
result = rb_obj_as_string(rb_eval(self, node->nd_body));
|
|
break;
|
|
|
|
case NODE_DSTR:
|
|
case NODE_DXSTR:
|
|
case NODE_DREGX:
|
|
case NODE_DREGX_ONCE:
|
|
case NODE_DSYM:
|
|
{
|
|
VALUE str, str2;
|
|
NODE *list = node->nd_next;
|
|
|
|
str = rb_str_new3(node->nd_lit);
|
|
while (list) {
|
|
if (list->nd_head) {
|
|
switch (nd_type(list->nd_head)) {
|
|
case NODE_STR:
|
|
str2 = list->nd_head->nd_lit;
|
|
break;
|
|
default:
|
|
str2 = rb_eval(self, list->nd_head);
|
|
break;
|
|
}
|
|
rb_str_append(str, str2);
|
|
OBJ_INFECT(str, str2);
|
|
}
|
|
list = list->nd_next;
|
|
}
|
|
switch (nd_type(node)) {
|
|
case NODE_DREGX:
|
|
result = rb_reg_new(RSTRING(str)->ptr, RSTRING(str)->len,
|
|
node->nd_cflag);
|
|
break;
|
|
case NODE_DREGX_ONCE: /* regexp expand once */
|
|
result = rb_reg_new(RSTRING(str)->ptr, RSTRING(str)->len,
|
|
node->nd_cflag);
|
|
nd_set_type(node, NODE_LIT);
|
|
node->nd_lit = result;
|
|
break;
|
|
case NODE_LIT:
|
|
/* other thread may replace NODE_DREGX_ONCE to NODE_LIT */
|
|
goto again;
|
|
case NODE_DXSTR:
|
|
result = rb_funcall(self, '`', 1, str);
|
|
break;
|
|
case NODE_DSYM:
|
|
result = rb_str_intern(str);
|
|
break;
|
|
default:
|
|
result = str;
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case NODE_XSTR:
|
|
result = rb_funcall(self, '`', 1, rb_str_new3(node->nd_lit));
|
|
break;
|
|
|
|
case NODE_LIT:
|
|
result = node->nd_lit;
|
|
break;
|
|
|
|
case NODE_DEFN:
|
|
if (node->nd_defn) {
|
|
NODE *body, *defn;
|
|
VALUE origin;
|
|
int noex;
|
|
|
|
if (NIL_P(ruby_cbase)) {
|
|
rb_raise(rb_eTypeError, "no class/module to define method");
|
|
}
|
|
if (ruby_cbase == rb_cObject && node->nd_mid == init) {
|
|
rb_warn("redefining Object#initialize may cause infinite loop");
|
|
}
|
|
if (node->nd_mid == object_id ||
|
|
node->nd_mid == __send || node->nd_mid == __send_bang) {
|
|
rb_warn("redefining `%s' may cause serious problem",
|
|
rb_id2name(node->nd_mid));
|
|
}
|
|
rb_frozen_class_p(ruby_cbase);
|
|
body = search_method(ruby_cbase, node->nd_mid, &origin, LOOKUP_NOSKIP, 0);
|
|
if (body){
|
|
if (RTEST(ruby_verbose) && ruby_cbase == origin &&
|
|
body->nd_cnt == 0 && body->nd_body) {
|
|
rb_warning("method redefined; discarding old %s", rb_id2name(node->nd_mid));
|
|
}
|
|
}
|
|
|
|
if (VIS_TEST(VIS_PRIVATE) || node->nd_mid == init) {
|
|
noex = NOEX_PRIVATE;
|
|
}
|
|
else if (VIS_TEST(VIS_LOCAL)) {
|
|
noex = NOEX_LOCAL;
|
|
}
|
|
else if (VIS_TEST(VIS_PROTECTED)) {
|
|
noex = NOEX_PROTECTED;
|
|
}
|
|
else {
|
|
noex = NOEX_PUBLIC;
|
|
}
|
|
if (body && origin == ruby_cbase && body->nd_body == 0) {
|
|
noex |= NOEX_NOSUPER;
|
|
}
|
|
|
|
defn = copy_node_scope(node->nd_defn, ruby_cref);
|
|
rb_add_method(ruby_cbase, node->nd_mid, defn, noex);
|
|
if (VIS_MODE() == VIS_MODFUNC) {
|
|
rb_add_method(rb_singleton_class(ruby_cbase),
|
|
node->nd_mid, defn, NOEX_PUBLIC);
|
|
}
|
|
result = Qnil;
|
|
}
|
|
break;
|
|
|
|
case NODE_DEFS:
|
|
if (node->nd_defn) {
|
|
VALUE recv = rb_eval(self, node->nd_recv);
|
|
VALUE klass;
|
|
NODE *body = 0, *defn;
|
|
|
|
if (ruby_safe_level >= 4 && !OBJ_TAINTED(recv)) {
|
|
rb_raise(rb_eSecurityError, "Insecure: can't define singleton method");
|
|
}
|
|
if (FIXNUM_P(recv) || SYMBOL_P(recv)) {
|
|
rb_raise(rb_eTypeError,
|
|
"can't define singleton method \"%s\" for %s",
|
|
rb_id2name(node->nd_mid),
|
|
rb_obj_classname(recv));
|
|
}
|
|
|
|
if (OBJ_FROZEN(recv)) rb_error_frozen("object");
|
|
klass = rb_singleton_class(recv);
|
|
if (st_lookup(RCLASS(klass)->m_tbl, node->nd_mid, (st_data_t *)&body)) {
|
|
if (ruby_safe_level >= 4) {
|
|
rb_raise(rb_eSecurityError, "redefining method prohibited");
|
|
}
|
|
if (RTEST(ruby_verbose)) {
|
|
rb_warning("redefine %s", rb_id2name(node->nd_mid));
|
|
}
|
|
}
|
|
defn = copy_node_scope(node->nd_defn, ruby_cref);
|
|
rb_add_method(klass, node->nd_mid, defn,
|
|
NOEX_PUBLIC|(body?body->nd_noex&NOEX_UNDEF:0));
|
|
result = Qnil;
|
|
}
|
|
break;
|
|
|
|
case NODE_UNDEF:
|
|
if (NIL_P(ruby_cbase)) {
|
|
rb_raise(rb_eTypeError, "no class to undef method");
|
|
}
|
|
rb_undef(ruby_cbase, rb_to_id(rb_eval(self, node->u2.node)));
|
|
result = Qnil;
|
|
break;
|
|
|
|
case NODE_ALIAS:
|
|
if (NIL_P(ruby_cbase)) {
|
|
rb_raise(rb_eTypeError, "no class to make alias");
|
|
}
|
|
rb_alias(ruby_cbase, rb_to_id(rb_eval(self, node->u1.node)),
|
|
rb_to_id(rb_eval(self, node->u2.node)));
|
|
result = Qnil;
|
|
break;
|
|
|
|
case NODE_VALIAS:
|
|
rb_alias_variable(node->u1.id, node->u2.id);
|
|
result = Qnil;
|
|
break;
|
|
|
|
case NODE_CLASS:
|
|
{
|
|
VALUE super, klass, tmp, cbase;
|
|
ID cname;
|
|
int gen = Qfalse;
|
|
|
|
cbase = class_prefix(self, node->nd_cpath);
|
|
cname = node->nd_cpath->nd_mid;
|
|
|
|
if (NIL_P(ruby_cbase)) {
|
|
rb_raise(rb_eTypeError, "no outer class/module");
|
|
}
|
|
if (node->nd_super) {
|
|
super = rb_eval(self, node->nd_super);
|
|
rb_check_inheritable(super);
|
|
}
|
|
else {
|
|
super = 0;
|
|
}
|
|
|
|
if (rb_const_defined_at(cbase, cname)) {
|
|
klass = rb_const_get_at(cbase, cname);
|
|
if (TYPE(klass) != T_CLASS) {
|
|
rb_raise(rb_eTypeError, "%s is not a class",
|
|
rb_id2name(cname));
|
|
}
|
|
if (super) {
|
|
tmp = rb_class_real(RCLASS(klass)->super);
|
|
if (tmp != super) {
|
|
rb_raise(rb_eTypeError, "superclass mismatch for class %s",
|
|
rb_id2name(cname));
|
|
}
|
|
super = 0;
|
|
}
|
|
if (ruby_safe_level >= 4) {
|
|
rb_raise(rb_eSecurityError, "extending class prohibited");
|
|
}
|
|
}
|
|
else {
|
|
if (!super) super = rb_cObject;
|
|
klass = rb_define_class_id(cname, super);
|
|
rb_set_class_path(klass, cbase, rb_id2name(cname));
|
|
rb_const_set(cbase, cname, klass);
|
|
gen = Qtrue;
|
|
}
|
|
if (ruby_wrapper) {
|
|
rb_extend_object(klass, ruby_wrapper);
|
|
rb_include_module(klass, ruby_wrapper);
|
|
}
|
|
if (super && gen) {
|
|
rb_class_inherited(super, klass);
|
|
}
|
|
result = module_setup(klass, node);
|
|
}
|
|
break;
|
|
|
|
case NODE_MODULE:
|
|
{
|
|
VALUE module, cbase;
|
|
ID cname;
|
|
|
|
if (NIL_P(ruby_cbase)) {
|
|
rb_raise(rb_eTypeError, "no outer class/module");
|
|
}
|
|
cbase = class_prefix(self, node->nd_cpath);
|
|
cname = node->nd_cpath->nd_mid;
|
|
if (rb_const_defined_at(cbase, cname)) {
|
|
module = rb_const_get_at(cbase, cname);
|
|
if (TYPE(module) != T_MODULE) {
|
|
rb_raise(rb_eTypeError, "%s is not a module",
|
|
rb_id2name(cname));
|
|
}
|
|
if (ruby_safe_level >= 4) {
|
|
rb_raise(rb_eSecurityError, "extending module prohibited");
|
|
}
|
|
}
|
|
else {
|
|
module = rb_define_module_id(cname);
|
|
rb_set_class_path(module, cbase, rb_id2name(cname));
|
|
rb_const_set(cbase, cname, module);
|
|
rb_obj_call_init(module, 0, 0);
|
|
}
|
|
if (ruby_wrapper) {
|
|
rb_extend_object(module, ruby_wrapper);
|
|
rb_include_module(module, ruby_wrapper);
|
|
}
|
|
result = module_setup(module, node);
|
|
}
|
|
break;
|
|
|
|
case NODE_SCLASS:
|
|
{
|
|
VALUE klass;
|
|
|
|
result = rb_eval(self, node->nd_recv);
|
|
if (FIXNUM_P(result) || SYMBOL_P(result)) {
|
|
rb_raise(rb_eTypeError, "no singleton class for %s",
|
|
rb_obj_classname(result));
|
|
}
|
|
if (ruby_safe_level >= 4 && !OBJ_TAINTED(result))
|
|
rb_raise(rb_eSecurityError, "Insecure: can't extend object");
|
|
klass = rb_singleton_class(result);
|
|
|
|
if (ruby_wrapper) {
|
|
rb_extend_object(klass, ruby_wrapper);
|
|
rb_include_module(klass, ruby_wrapper);
|
|
}
|
|
|
|
result = module_setup(klass, node);
|
|
}
|
|
break;
|
|
|
|
case NODE_DEFINED:
|
|
{
|
|
char buf[20];
|
|
const char *desc = is_defined(self, node->nd_head, buf, 0);
|
|
|
|
if (desc) result = rb_str_new2(desc);
|
|
else result = Qnil;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
unknown_node(node);
|
|
}
|
|
finish:
|
|
CHECK_INTS;
|
|
if (contnode) {
|
|
node = contnode;
|
|
contnode = 0;
|
|
goto again;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
static VALUE
|
|
module_setup(VALUE module, NODE *n)
|
|
{
|
|
NODE * volatile node = n->nd_body;
|
|
int state;
|
|
struct FRAME frame;
|
|
VALUE result = Qnil; /* OK */
|
|
TMP_PROTECT;
|
|
|
|
frame = *ruby_frame;
|
|
frame.tmp = ruby_frame;
|
|
ruby_frame = &frame;
|
|
|
|
PUSH_SCOPE();
|
|
PUSH_VARS();
|
|
|
|
if (node->nd_tbl) {
|
|
VALUE *vars = TMP_ALLOC(node->nd_tbl[0]+1);
|
|
*vars++ = (VALUE)node;
|
|
ruby_scope->local_vars = vars;
|
|
rb_mem_clear(ruby_scope->local_vars, node->nd_tbl[0]);
|
|
ruby_scope->local_tbl = node->nd_tbl;
|
|
}
|
|
else {
|
|
ruby_scope->local_vars = 0;
|
|
ruby_scope->local_tbl = 0;
|
|
}
|
|
|
|
PUSH_CREF(module);
|
|
VIS_SET(VIS_PUBLIC);
|
|
PUSH_TAG(PROT_NONE);
|
|
if ((state = EXEC_TAG()) == 0) {
|
|
EXEC_EVENT_HOOK(RUBY_EVENT_CLASS, n, ruby_cbase,
|
|
ruby_frame->this_func, ruby_frame->this_class);
|
|
result = rb_eval(ruby_cbase, node->nd_next);
|
|
}
|
|
POP_TAG();
|
|
POP_CREF();
|
|
POP_VARS();
|
|
POP_SCOPE();
|
|
|
|
ruby_frame = frame.tmp;
|
|
EXEC_EVENT_HOOK(RUBY_EVENT_END, n, 0, ruby_frame->this_func,
|
|
ruby_frame->this_class);
|
|
if (state) JUMP_TAG(state);
|
|
|
|
return result;
|
|
}
|
|
|
|
static NODE *basic_respond_to = 0;
|
|
|
|
int
|
|
rb_obj_respond_to(VALUE obj, ID id, int priv)
|
|
{
|
|
VALUE klass = CLASS_OF(obj);
|
|
|
|
if (rb_method_node(klass, respond_to) == basic_respond_to) {
|
|
return rb_method_boundp(klass, id, !priv);
|
|
}
|
|
else {
|
|
VALUE args[2];
|
|
int n = 0;
|
|
args[n++] = ID2SYM(id);
|
|
if (priv) args[n++] = Qtrue;
|
|
return rb_funcall2(obj, respond_to, n, args);
|
|
}
|
|
}
|
|
|
|
int
|
|
rb_respond_to(VALUE obj, ID id)
|
|
{
|
|
return rb_obj_respond_to(obj, id, Qfalse);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* obj.respond_to?(symbol, include_private=false) => true or false
|
|
*
|
|
* Returns +true+> if _obj_ responds to the given
|
|
* method. Private methods are included in the search only if the
|
|
* optional second parameter evaluates to +true+.
|
|
*/
|
|
|
|
static VALUE
|
|
obj_respond_to(int argc, VALUE *argv, VALUE obj)
|
|
{
|
|
VALUE mid, priv;
|
|
ID id;
|
|
|
|
rb_scan_args(argc, argv, "11", &mid, &priv);
|
|
id = rb_to_id(mid);
|
|
if (rb_method_boundp(CLASS_OF(obj), id, !RTEST(priv))) {
|
|
return Qtrue;
|
|
}
|
|
return Qfalse;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* mod.method_defined?(symbol, inherit=true) => true or false
|
|
*
|
|
* Returns +true+ if the named method is defined by
|
|
* _mod_ (or its included modules and, if _mod_ is a class,
|
|
* its ancestors, if _inherit_ is true). Public and protected
|
|
* methods are matched.
|
|
*
|
|
* module A
|
|
* def method1() end
|
|
* end
|
|
* class B
|
|
* def method2() end
|
|
* end
|
|
* class C < B
|
|
* include A
|
|
* def method3() end
|
|
* end
|
|
*
|
|
* A.method_defined? :method1 #=> true
|
|
* C.method_defined? "method1" #=> true
|
|
* C.method_defined? "method2" #=> true
|
|
* C.method_defined? "method3" #=> true
|
|
* C.method_defined? "method4" #=> false
|
|
* C.method_defined?("method2", false) #=> false
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_method_defined(int argc, VALUE *argv, VALUE mod)
|
|
{
|
|
VALUE mid, recur;
|
|
ID id;
|
|
|
|
if (argc == 1) {
|
|
recur = Qtrue;
|
|
mid = argv[0];
|
|
}
|
|
else {
|
|
rb_scan_args(argc, argv, "11", &mid, &recur);
|
|
}
|
|
id = rb_to_id(mid);
|
|
if (!RTEST(recur)) {
|
|
return st_is_member(RCLASS(mod)->m_tbl, id) ? Qtrue : Qfalse;
|
|
}
|
|
return rb_method_boundp(mod, id, Qtrue);
|
|
}
|
|
|
|
#define VISI_CHECK(x,f) (((x)&NOEX_MASK) == (f))
|
|
|
|
/*
|
|
* call-seq:
|
|
* mod.public_method_defined?(symbol) => true or false
|
|
*
|
|
* Returns +true+ if the named public method is defined by
|
|
* _mod_ (or its included modules and, if _mod_ is a class,
|
|
* its ancestors).
|
|
*
|
|
* module A
|
|
* def method1() end
|
|
* end
|
|
* class B
|
|
* protected
|
|
* def method2() end
|
|
* end
|
|
* class C < B
|
|
* include A
|
|
* def method3() end
|
|
* end
|
|
*
|
|
* A.method_defined? :method1 #=> true
|
|
* C.public_method_defined? "method1" #=> true
|
|
* C.public_method_defined? "method2" #=> false
|
|
* C.method_defined? "method2" #=> true
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_public_method_defined(VALUE mod, VALUE mid)
|
|
{
|
|
ID id = rb_to_id(mid);
|
|
int noex = LOOKUP_NOSKIP;
|
|
|
|
if (rb_get_method_body(&mod, &id, &noex)) {
|
|
if (VISI_CHECK(noex, NOEX_PUBLIC))
|
|
return Qtrue;
|
|
}
|
|
return Qfalse;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* mod.private_method_defined?(symbol) => true or false
|
|
*
|
|
* Returns +true+ if the named private method is defined by
|
|
* _ mod_ (or its included modules and, if _mod_ is a class,
|
|
* its ancestors).
|
|
*
|
|
* module A
|
|
* def method1() end
|
|
* end
|
|
* class B
|
|
* private
|
|
* def method2() end
|
|
* end
|
|
* class C < B
|
|
* include A
|
|
* def method3() end
|
|
* end
|
|
*
|
|
* A.method_defined? :method1 #=> true
|
|
* C.private_method_defined? "method1" #=> false
|
|
* C.private_method_defined? "method2" #=> true
|
|
* C.method_defined? "method2" #=> false
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_private_method_defined(VALUE mod, VALUE mid)
|
|
{
|
|
ID id = rb_to_id(mid);
|
|
int noex = LOOKUP_NOSKIP;
|
|
|
|
if (rb_get_method_body(&mod, &id, &noex)) {
|
|
if (VISI_CHECK(noex, NOEX_PRIVATE))
|
|
return Qtrue;
|
|
}
|
|
return Qfalse;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* mod.protected_method_defined?(symbol) => true or false
|
|
*
|
|
* Returns +true+ if the named protected method is defined
|
|
* by _mod_ (or its included modules and, if _mod_ is a
|
|
* class, its ancestors).
|
|
*
|
|
* module A
|
|
* def method1() end
|
|
* end
|
|
* class B
|
|
* protected
|
|
* def method2() end
|
|
* end
|
|
* class C < B
|
|
* include A
|
|
* def method3() end
|
|
* end
|
|
*
|
|
* A.method_defined? :method1 #=> true
|
|
* C.protected_method_defined? "method1" #=> false
|
|
* C.protected_method_defined? "method2" #=> true
|
|
* C.method_defined? "method2" #=> true
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_protected_method_defined(VALUE mod, VALUE mid)
|
|
{
|
|
ID id = rb_to_id(mid);
|
|
int noex = LOOKUP_NOSKIP;
|
|
|
|
if (rb_get_method_body(&mod, &id, &noex)) {
|
|
if (VISI_CHECK(noex, NOEX_PROTECTED))
|
|
return Qtrue;
|
|
}
|
|
return Qfalse;
|
|
}
|
|
|
|
NORETURN(static VALUE terminate_process(int, VALUE));
|
|
static VALUE
|
|
terminate_process(int status, VALUE mesg)
|
|
{
|
|
VALUE args[2];
|
|
args[0] = INT2NUM(status);
|
|
args[1] = mesg;
|
|
|
|
rb_exc_raise(rb_class_new_instance(2, args, rb_eSystemExit));
|
|
}
|
|
|
|
void
|
|
rb_exit(int status)
|
|
{
|
|
if (prot_tag) {
|
|
terminate_process(status, rb_str_new("exit", 4));
|
|
}
|
|
ruby_finalize();
|
|
exit(status);
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* exit(integer=0)
|
|
* Kernel::exit(integer=0)
|
|
* Process::exit(integer=0)
|
|
*
|
|
* Initiates the termination of the Ruby script by raising the
|
|
* <code>SystemExit</code> exception. This exception may be caught. The
|
|
* optional parameter is used to return a status code to the invoking
|
|
* environment.
|
|
*
|
|
* begin
|
|
* exit
|
|
* puts "never get here"
|
|
* rescue SystemExit
|
|
* puts "rescued a SystemExit exception"
|
|
* end
|
|
* puts "after begin block"
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* rescued a SystemExit exception
|
|
* after begin block
|
|
*
|
|
* Just prior to termination, Ruby executes any <code>at_exit</code> functions
|
|
* (see Kernel::at_exit) and runs any object finalizers (see
|
|
* ObjectSpace::define_finalizer).
|
|
*
|
|
* at_exit { puts "at_exit function" }
|
|
* ObjectSpace.define_finalizer("string", proc { puts "in finalizer" })
|
|
* exit
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* at_exit function
|
|
* in finalizer
|
|
*/
|
|
|
|
VALUE
|
|
rb_f_exit(int argc, VALUE *argv)
|
|
{
|
|
VALUE status;
|
|
int istatus;
|
|
|
|
rb_secure(4);
|
|
if (rb_scan_args(argc, argv, "01", &status) == 1) {
|
|
switch (status) {
|
|
case Qtrue:
|
|
istatus = EXIT_SUCCESS;
|
|
break;
|
|
case Qfalse:
|
|
istatus = EXIT_FAILURE;
|
|
break;
|
|
default:
|
|
istatus = NUM2INT(status);
|
|
#if EXIT_SUCCESS != 0
|
|
if (istatus == 0) istatus = EXIT_SUCCESS;
|
|
#endif
|
|
break;
|
|
}
|
|
}
|
|
else {
|
|
istatus = EXIT_SUCCESS;
|
|
}
|
|
rb_exit(istatus);
|
|
return Qnil; /* not reached */
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* abort
|
|
* Kernel::abort
|
|
* Process::abort
|
|
*
|
|
* Terminate execution immediately, effectively by calling
|
|
* <code>Kernel.exit(1)</code>. If _msg_ is given, it is written
|
|
* to STDERR prior to terminating.
|
|
*/
|
|
|
|
VALUE
|
|
rb_f_abort(int argc, VALUE *argv)
|
|
{
|
|
rb_secure(4);
|
|
if (argc == 0) {
|
|
if (!NIL_P(ruby_errinfo)) {
|
|
error_print();
|
|
}
|
|
rb_exit(EXIT_FAILURE);
|
|
}
|
|
else {
|
|
VALUE mesg;
|
|
|
|
rb_scan_args(argc, argv, "1", &mesg);
|
|
StringValue(mesg);
|
|
rb_io_puts(1, &mesg, rb_stderr);
|
|
terminate_process(EXIT_FAILURE, mesg);
|
|
}
|
|
return Qnil; /* not reached */
|
|
}
|
|
|
|
void
|
|
rb_iter_break(void)
|
|
{
|
|
break_jump(Qnil);
|
|
}
|
|
|
|
NORETURN(static void rb_longjmp(int, VALUE));
|
|
static VALUE make_backtrace(void);
|
|
|
|
static void
|
|
rb_longjmp(int tag, VALUE mesg)
|
|
{
|
|
VALUE at;
|
|
|
|
if (thread_set_raised()) {
|
|
ruby_errinfo = exception_error;
|
|
JUMP_TAG(TAG_FATAL);
|
|
}
|
|
if (NIL_P(mesg)) mesg = ruby_errinfo;
|
|
if (NIL_P(mesg)) {
|
|
mesg = rb_exc_new(rb_eRuntimeError, 0, 0);
|
|
}
|
|
|
|
ruby_set_current_source();
|
|
if (ruby_sourcefile && !NIL_P(mesg)) {
|
|
at = get_backtrace(mesg);
|
|
if (NIL_P(at)) {
|
|
at = make_backtrace();
|
|
set_backtrace(mesg, at);
|
|
}
|
|
}
|
|
if (!NIL_P(mesg)) {
|
|
ruby_errinfo = mesg;
|
|
}
|
|
|
|
if (RTEST(ruby_debug) && !NIL_P(ruby_errinfo)
|
|
&& !rb_obj_is_kind_of(ruby_errinfo, rb_eSystemExit)) {
|
|
VALUE e = ruby_errinfo;
|
|
int status;
|
|
|
|
PUSH_TAG(PROT_NONE);
|
|
if ((status = EXEC_TAG()) == 0) {
|
|
e = rb_obj_as_string(e);
|
|
warn_printf("Exception `%s' at %s:%d - %s\n",
|
|
rb_obj_classname(ruby_errinfo),
|
|
ruby_sourcefile, ruby_sourceline,
|
|
RSTRING(e)->ptr);
|
|
}
|
|
POP_TAG();
|
|
if (status == TAG_FATAL && ruby_errinfo == exception_error) {
|
|
ruby_errinfo = mesg;
|
|
}
|
|
else if (status) {
|
|
thread_reset_raised();
|
|
JUMP_TAG(status);
|
|
}
|
|
}
|
|
|
|
rb_trap_restore_mask();
|
|
if (tag != TAG_FATAL) {
|
|
EXEC_EVENT_HOOK(RUBY_EVENT_RAISE, ruby_current_node,
|
|
ruby_frame->self,
|
|
ruby_frame->this_func,
|
|
ruby_frame->this_class);
|
|
}
|
|
if (!prot_tag) {
|
|
error_print();
|
|
}
|
|
thread_reset_raised();
|
|
JUMP_TAG(tag);
|
|
}
|
|
|
|
void
|
|
rb_exc_raise(VALUE mesg)
|
|
{
|
|
rb_longjmp(TAG_RAISE, mesg);
|
|
}
|
|
|
|
void
|
|
rb_exc_fatal(VALUE mesg)
|
|
{
|
|
rb_longjmp(TAG_FATAL, mesg);
|
|
}
|
|
|
|
void
|
|
rb_interrupt(void)
|
|
{
|
|
rb_raise(rb_eInterrupt, "");
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* raise
|
|
* raise(string)
|
|
* raise(exception [, string [, array]])
|
|
* fail
|
|
* fail(string)
|
|
* fail(exception [, string [, array]])
|
|
*
|
|
* With no arguments, raises the exception in <code>$!</code> or raises
|
|
* a <code>RuntimeError</code> if <code>$!</code> is +nil+.
|
|
* With a single +String+ argument, raises a
|
|
* +RuntimeError+ with the string as a message. Otherwise,
|
|
* the first parameter should be the name of an +Exception+
|
|
* class (or an object that returns an +Exception+ object when sent
|
|
* an +exception+ message). The optional second parameter sets the
|
|
* message associated with the exception, and the third parameter is an
|
|
* array of callback information. Exceptions are caught by the
|
|
* +rescue+ clause of <code>begin...end</code> blocks.
|
|
*
|
|
* raise "Failed to create socket"
|
|
* raise ArgumentError, "No parameters", caller
|
|
*/
|
|
|
|
static VALUE
|
|
rb_f_raise(int argc, VALUE *argv)
|
|
{
|
|
rb_raise_jump(rb_make_exception(argc, argv));
|
|
return Qnil; /* not reached */
|
|
}
|
|
|
|
static VALUE
|
|
rb_make_exception(int argc, VALUE *argv)
|
|
{
|
|
VALUE mesg;
|
|
ID exception;
|
|
int n;
|
|
|
|
mesg = Qnil;
|
|
switch (argc) {
|
|
case 0:
|
|
mesg = Qnil;
|
|
break;
|
|
case 1:
|
|
if (NIL_P(argv[0])) break;
|
|
if (TYPE(argv[0]) == T_STRING) {
|
|
mesg = rb_exc_new3(rb_eRuntimeError, argv[0]);
|
|
break;
|
|
}
|
|
n = 0;
|
|
goto exception_call;
|
|
|
|
case 2:
|
|
case 3:
|
|
n = 1;
|
|
exception_call:
|
|
exception = rb_intern("exception");
|
|
if (!rb_respond_to(argv[0], exception)) {
|
|
rb_raise(rb_eTypeError, "exception class/object expected");
|
|
}
|
|
mesg = rb_funcall(argv[0], exception, n, argv[1]);
|
|
break;
|
|
default:
|
|
rb_raise(rb_eArgError, "wrong number of arguments");
|
|
break;
|
|
}
|
|
if (argc > 0) {
|
|
if (!rb_obj_is_kind_of(mesg, rb_eException))
|
|
rb_raise(rb_eTypeError, "exception object expected");
|
|
if (argc>2)
|
|
set_backtrace(mesg, argv[2]);
|
|
}
|
|
|
|
return mesg;
|
|
}
|
|
|
|
static void
|
|
rb_raise_jump(VALUE mesg)
|
|
{
|
|
if (ruby_frame != top_frame) {
|
|
PUSH_FRAME(Qfalse); /* fake frame */
|
|
*ruby_frame = *_frame.prev->prev;
|
|
rb_longjmp(TAG_RAISE, mesg);
|
|
POP_FRAME();
|
|
}
|
|
rb_longjmp(TAG_RAISE, mesg);
|
|
}
|
|
|
|
void
|
|
rb_jump_tag(int tag)
|
|
{
|
|
JUMP_TAG(tag);
|
|
}
|
|
|
|
int
|
|
rb_block_given_p(void)
|
|
{
|
|
if (ruby_frame->block) return Qtrue;
|
|
return Qfalse;
|
|
}
|
|
|
|
int
|
|
rb_iterator_p(void)
|
|
{
|
|
return rb_block_given_p();
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* block_given? => true or false
|
|
* iterator? => true or false
|
|
*
|
|
* Returns <code>true</code> if <code>yield</code> would execute a
|
|
* block in the current context. The <code>iterator?</code> form
|
|
* is mildly deprecated.
|
|
*
|
|
* def try
|
|
* if block_given?
|
|
* yield
|
|
* else
|
|
* "no block"
|
|
* end
|
|
* end
|
|
* try #=> "no block"
|
|
* try { "hello" } #=> "hello"
|
|
* try do "hello" end #=> "hello"
|
|
*/
|
|
|
|
|
|
static VALUE
|
|
rb_f_block_given_p(void)
|
|
{
|
|
if (ruby_frame->prev && ruby_frame->prev->block)
|
|
return Qtrue;
|
|
return Qfalse;
|
|
}
|
|
|
|
static VALUE rb_eThreadError;
|
|
|
|
NORETURN(static void proc_jump_error(int, VALUE));
|
|
static void
|
|
proc_jump_error(int state, VALUE result)
|
|
{
|
|
char mesg[32];
|
|
const char *statement;
|
|
|
|
switch (state) {
|
|
case TAG_BREAK:
|
|
statement = "break"; break;
|
|
case TAG_RETURN:
|
|
statement = "return"; break;
|
|
case TAG_RETRY:
|
|
statement = "retry"; break;
|
|
default:
|
|
statement = "local-jump"; break; /* should not happen */
|
|
}
|
|
snprintf(mesg, sizeof mesg, "%s from proc-closure", statement);
|
|
localjump_error(mesg, result, state, 0);
|
|
}
|
|
|
|
NORETURN(static void return_jump(VALUE));
|
|
static void
|
|
return_jump(VALUE retval)
|
|
{
|
|
struct tag *tt = prot_tag;
|
|
|
|
if (retval == Qundef) retval = Qnil;
|
|
while (tt) {
|
|
if ((tt->tag == PROT_FUNC && tt->frame->uniq == ruby_frame->uniq) ||
|
|
(tt->tag == PROT_LAMBDA))
|
|
{
|
|
tt->dst = (VALUE)tt->frame->uniq;
|
|
tt->retval = retval;
|
|
JUMP_TAG(TAG_RETURN);
|
|
}
|
|
if (tt->tag == PROT_THREAD && tt->prev) {
|
|
rb_raise(rb_eThreadError, "return can't jump across threads");
|
|
}
|
|
tt = tt->prev;
|
|
}
|
|
localjump_error("unexpected return", retval, TAG_RETURN, 0);
|
|
}
|
|
|
|
static void
|
|
break_jump(VALUE retval)
|
|
{
|
|
struct tag *tt = prot_tag;
|
|
int yield = 0;
|
|
|
|
if (retval == Qundef) retval = Qnil;
|
|
while (tt) {
|
|
switch (tt->tag) {
|
|
case PROT_THREAD:
|
|
/* skip toplevel tag */
|
|
if (!tt->prev) break;
|
|
case PROT_YIELD:
|
|
case PROT_LAMBDA:
|
|
case PROT_LOOP:
|
|
tt->dst = (VALUE)tt->frame->uniq;
|
|
tt->retval = retval;
|
|
JUMP_TAG(TAG_BREAK);
|
|
break;
|
|
case PROT_FUNC:
|
|
tt = 0;
|
|
continue;
|
|
default:
|
|
break;
|
|
}
|
|
tt = tt->prev;
|
|
}
|
|
localjump_error("unexpected break", retval, TAG_BREAK, 0);
|
|
}
|
|
|
|
static void
|
|
next_jump(VALUE retval)
|
|
{
|
|
struct tag *tt = prot_tag;
|
|
|
|
if (retval == Qundef) retval = Qnil;
|
|
while (tt) {
|
|
switch (tt->tag) {
|
|
case PROT_THREAD:
|
|
/* skip toplevel tag */
|
|
if (!tt->prev) break;
|
|
case PROT_YIELD:
|
|
case PROT_LAMBDA:
|
|
case PROT_LOOP:
|
|
case PROT_FUNC:
|
|
tt->dst = (VALUE)tt->frame->uniq;
|
|
tt->retval = retval;
|
|
JUMP_TAG(TAG_NEXT);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
tt = tt->prev;
|
|
}
|
|
localjump_error("unexpected next", retval, TAG_NEXT, 0);
|
|
}
|
|
|
|
static VALUE bmcall(VALUE, VALUE);
|
|
static int method_arity(VALUE);
|
|
|
|
void
|
|
rb_need_block(void)
|
|
{
|
|
if (!rb_block_given_p()) {
|
|
localjump_error("no block given", Qnil, 0, 0);
|
|
}
|
|
}
|
|
|
|
static VALUE
|
|
rb_yield_0(VALUE val, VALUE self, VALUE klass /* OK */, int flags)
|
|
{
|
|
NODE *node, *var;
|
|
volatile VALUE result = Qnil;
|
|
volatile VALUE old_cref;
|
|
volatile VALUE old_wrapper;
|
|
struct BLOCK * volatile block;
|
|
struct SCOPE * volatile old_scope;
|
|
int old_vmode;
|
|
struct FRAME frame;
|
|
NODE *cnode = ruby_current_node;
|
|
int ary_args, lambda;
|
|
int state, broken = 0;
|
|
|
|
rb_need_block();
|
|
|
|
PUSH_VARS();
|
|
block = ruby_frame->block;
|
|
frame = block->frame;
|
|
frame.prev = ruby_frame;
|
|
frame.node = cnode;
|
|
ruby_frame = &(frame);
|
|
old_cref = (VALUE)ruby_cref;
|
|
ruby_cref = block->cref;
|
|
old_wrapper = ruby_wrapper;
|
|
ruby_wrapper = block->wrapper;
|
|
old_scope = ruby_scope;
|
|
ruby_scope = block->scope;
|
|
old_vmode = vis_mode;
|
|
vis_mode = (flags & YIELD_PUBLIC_DEF) ? VIS_PUBLIC : block->vmode;
|
|
if (block->flags & BLOCK_D_SCOPE) {
|
|
/* put place holder for dynamic (in-block) local variables */
|
|
ruby_dyna_vars = new_dvar(0, 0, block->dyna_vars);
|
|
}
|
|
else {
|
|
/* FOR does not introduce new scope */
|
|
ruby_dyna_vars = block->dyna_vars;
|
|
}
|
|
if (klass) PUSH_CREF(klass);
|
|
else {
|
|
self = block->self;
|
|
}
|
|
node = block->body;
|
|
var = block->var;
|
|
lambda = block->flags & BLOCK_LAMBDA;
|
|
ary_args = flags & YIELD_ARY_ARGS;
|
|
if (var) {
|
|
PUSH_TAG(PROT_NONE);
|
|
if ((state = EXEC_TAG()) == 0) {
|
|
NODE *bvar = NULL;
|
|
block_var:
|
|
if (var == (NODE*)1) { /* no parameter || */
|
|
if (lambda && val != Qundef) {
|
|
if (TYPE(val) != T_ARRAY) {
|
|
rb_raise(rb_eArgError, "wrong number of arguments (1 for 0)");
|
|
}
|
|
else if (RARRAY(val)->len != 0) {
|
|
rb_raise(rb_eArgError, "wrong number of arguments (%ld for 0)",
|
|
RARRAY(val)->len);
|
|
}
|
|
}
|
|
}
|
|
else if (var == (NODE*)2) {
|
|
if (TYPE(val) == T_ARRAY && RARRAY(val)->len != 0) {
|
|
rb_raise(rb_eArgError, "wrong number of arguments (%ld for 0)",
|
|
RARRAY(val)->len);
|
|
}
|
|
}
|
|
else if (!bvar && nd_type(var) == NODE_BLOCK_PASS) {
|
|
bvar = var->nd_body;
|
|
var = var->nd_args;
|
|
goto block_var;
|
|
}
|
|
else if (nd_type(var) == NODE_ARGS) {
|
|
if (!ary_args) val = svalue_to_avalue(val);
|
|
formal_assign(self, var, RARRAY(val)->len, RARRAY(val)->ptr, 0);
|
|
}
|
|
else if (nd_type(var) == NODE_BLOCK) {
|
|
if (var->nd_next) {
|
|
bvar = var->nd_next->nd_head;
|
|
}
|
|
var = var->nd_head;
|
|
goto block_var;
|
|
}
|
|
else if (nd_type(var) == NODE_MASGN) {
|
|
massign(self, var, val, lambda);
|
|
}
|
|
else {
|
|
if (lambda) {
|
|
if (val == Qundef) {
|
|
rb_raise(rb_eArgError, "wrong number of arguments (0 for 1)");
|
|
}
|
|
if (TYPE(val) == T_ARRAY && RARRAY(val)->len != 1) {
|
|
rb_raise(rb_eArgError, "wrong number of arguments (%ld for 1)",
|
|
RARRAY(val)->len);
|
|
}
|
|
}
|
|
if (ary_args) {
|
|
if (RARRAY(val)->len == 0)
|
|
val = Qnil;
|
|
else
|
|
val = RARRAY(val)->ptr[0];
|
|
}
|
|
assign(self, var, val, lambda);
|
|
}
|
|
if (bvar) {
|
|
struct BLOCK *b = ruby_frame->prev->prev->block;
|
|
VALUE blk;
|
|
|
|
if ((flags & YIELD_PROC_INVOKE) && b) {
|
|
blk = proc_alloc(rb_cProc, b, lambda);
|
|
}
|
|
else {
|
|
blk = Qnil;
|
|
}
|
|
assign(self, bvar, blk, 0);
|
|
}
|
|
}
|
|
POP_TAG();
|
|
if (state) goto pop_state;
|
|
}
|
|
else if (lambda && ary_args && RARRAY(val)->len != 0 &&
|
|
(!node || nd_type(node) != NODE_IFUNC ||
|
|
node->nd_cfnc != bmcall)) {
|
|
rb_raise(rb_eArgError, "wrong number of arguments (%ld for 0)",
|
|
RARRAY(val)->len);
|
|
}
|
|
if (!node) {
|
|
state = 0;
|
|
goto pop_state;
|
|
}
|
|
ruby_current_node = node;
|
|
|
|
PUSH_TAG(lambda ? PROT_NONE : PROT_YIELD);
|
|
if ((state = EXEC_TAG()) == 0) {
|
|
redo:
|
|
if (nd_type(node) == NODE_CFUNC || nd_type(node) == NODE_IFUNC) {
|
|
if (node->nd_state == YIELD_FUNC_AVALUE) {
|
|
val = svalue_to_avalue(val);
|
|
}
|
|
else {
|
|
if (val == Qundef && node->nd_state != YIELD_FUNC_SVALUE)
|
|
val = Qnil;
|
|
}
|
|
if ((block->flags&BLOCK_FROM_METHOD) && RTEST(block->block_obj)) {
|
|
struct BLOCK *data, _block;
|
|
Data_Get_Struct(block->block_obj, struct BLOCK, data);
|
|
_block = *data;
|
|
_block.uniq = block_unique++;
|
|
ruby_frame->block = &_block;
|
|
result = (*node->nd_cfnc)(val, node->nd_tval, self);
|
|
}
|
|
else {
|
|
result = (*node->nd_cfnc)(val, node->nd_tval, self);
|
|
}
|
|
}
|
|
else {
|
|
result = rb_eval(self, node);
|
|
}
|
|
}
|
|
else {
|
|
switch (state) {
|
|
case TAG_REDO:
|
|
state = 0;
|
|
CHECK_INTS;
|
|
goto redo;
|
|
case TAG_NEXT:
|
|
state = 0;
|
|
result = prot_tag->retval;
|
|
break;
|
|
case TAG_BREAK:
|
|
if (TAG_DST()) {
|
|
result = prot_tag->retval;
|
|
broken = 1;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
POP_TAG();
|
|
pop_state:
|
|
if (ruby_dyna_vars && (block->flags & BLOCK_D_SCOPE) &&
|
|
!FL_TEST(ruby_dyna_vars, DVAR_DONT_RECYCLE)) {
|
|
struct RVarmap *vars = ruby_dyna_vars;
|
|
|
|
if (ruby_dyna_vars->id == 0) {
|
|
vars = ruby_dyna_vars->next;
|
|
rb_gc_force_recycle((VALUE)ruby_dyna_vars);
|
|
while (vars && vars->id != 0 && vars != block->dyna_vars) {
|
|
struct RVarmap *tmp = vars->next;
|
|
rb_gc_force_recycle((VALUE)vars);
|
|
vars = tmp;
|
|
}
|
|
}
|
|
}
|
|
POP_VARS();
|
|
ruby_frame = ruby_frame->prev;
|
|
ruby_cref = (NODE*)old_cref;
|
|
ruby_wrapper = old_wrapper;
|
|
if (ruby_scope->flags & SCOPE_DONT_RECYCLE)
|
|
scope_dup(old_scope);
|
|
ruby_scope = old_scope;
|
|
vis_mode = old_vmode;
|
|
switch (state) {
|
|
case 0:
|
|
break;
|
|
case TAG_BREAK:
|
|
if (broken) {
|
|
struct tag *tt = prot_tag;
|
|
|
|
while (tt) {
|
|
if ((tt->tag == PROT_LOOP && tt->blkid == block->uniq) ||
|
|
(lambda && tt->tag == PROT_LAMBDA)) {
|
|
tt->dst = (VALUE)tt->frame->uniq;
|
|
tt->retval = result;
|
|
JUMP_TAG(TAG_BREAK);
|
|
}
|
|
tt = tt->prev;
|
|
}
|
|
proc_jump_error(TAG_BREAK, result);
|
|
}
|
|
default:
|
|
JUMP_TAG(state);
|
|
break;
|
|
}
|
|
ruby_current_node = cnode;
|
|
return result;
|
|
}
|
|
|
|
VALUE
|
|
rb_yield(VALUE val)
|
|
{
|
|
return rb_yield_0(val, 0, 0, 0);
|
|
}
|
|
|
|
VALUE
|
|
rb_yield_values(int n, ...)
|
|
{
|
|
int i;
|
|
va_list args;
|
|
VALUE val;
|
|
|
|
if (n == 0) {
|
|
return rb_yield_0(Qundef, 0, 0, 0);
|
|
}
|
|
val = rb_ary_new2(n);
|
|
va_start(args, n);
|
|
for (i=0; i<n; i++) {
|
|
RARRAY(val)->ptr[i] = va_arg(args, VALUE);
|
|
}
|
|
RARRAY(val)->len = n;
|
|
va_end(args);
|
|
return rb_yield_0(val, 0, 0, 0);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* loop {|| block }
|
|
*
|
|
* Repeatedly executes the block.
|
|
*
|
|
* loop do
|
|
* print "Input: "
|
|
* line = gets
|
|
* break if !line or line =~ /^qQ/
|
|
* # ...
|
|
* end
|
|
*/
|
|
|
|
static VALUE
|
|
rb_f_loop(void)
|
|
{
|
|
for (;;) {
|
|
rb_yield_0(Qundef, 0, 0, 0);
|
|
CHECK_INTS;
|
|
}
|
|
return Qnil; /* dummy */
|
|
}
|
|
|
|
static VALUE
|
|
massign(VALUE self, NODE *node, VALUE val, int pcall)
|
|
{
|
|
NODE *list;
|
|
long i = 0, len;
|
|
volatile VALUE tmp;
|
|
VALUE *argv;
|
|
|
|
if (val == Qundef) {
|
|
argv = 0;
|
|
len = 0;
|
|
}
|
|
else {
|
|
tmp = rb_check_array_type(val);
|
|
if (NIL_P(tmp)) {
|
|
argv = &val;
|
|
len = (val == Qundef) ? 0 : 1;
|
|
}
|
|
else {
|
|
argv = RARRAY(tmp)->ptr;
|
|
len = RARRAY(tmp)->len;
|
|
}
|
|
}
|
|
list = node->nd_head;
|
|
for (; list && i<len; i++) {
|
|
assign(self, list->nd_head, argv[i], pcall);
|
|
list = list->nd_next;
|
|
}
|
|
if (pcall && list) goto arg_error;
|
|
if (node->nd_args) {
|
|
if ((long)(node->nd_args) == -1) {
|
|
/* no check for mere `*' */
|
|
}
|
|
else if (!list && i<len) {
|
|
assign(self, node->nd_args, rb_ary_new4(len-i, argv+i), pcall);
|
|
}
|
|
else {
|
|
assign(self, node->nd_args, rb_ary_new2(0), pcall);
|
|
}
|
|
}
|
|
else if (pcall && i < len) {
|
|
goto arg_error;
|
|
}
|
|
|
|
while (list) {
|
|
i++;
|
|
assign(self, list->nd_head, Qnil, pcall);
|
|
list = list->nd_next;
|
|
}
|
|
return val;
|
|
|
|
arg_error:
|
|
while (list) {
|
|
i++;
|
|
list = list->nd_next;
|
|
}
|
|
rb_raise(rb_eArgError, "wrong number of arguments (%ld for %ld)", len, i);
|
|
}
|
|
|
|
static void
|
|
assign(VALUE self, NODE *lhs, VALUE val, int pcall)
|
|
{
|
|
ruby_current_node = lhs;
|
|
if (val == Qundef) {
|
|
rb_warning("assigning void value");
|
|
val = Qnil;
|
|
}
|
|
switch (nd_type(lhs)) {
|
|
case NODE_GASGN:
|
|
rb_gvar_set(lhs->nd_entry, val);
|
|
break;
|
|
|
|
case NODE_IASGN:
|
|
rb_ivar_set(self, lhs->nd_vid, val);
|
|
break;
|
|
|
|
case NODE_LASGN:
|
|
if (ruby_scope->local_vars == 0)
|
|
rb_bug("unexpected local variable assignment");
|
|
ruby_scope->local_vars[lhs->nd_cnt] = val;
|
|
break;
|
|
|
|
case NODE_DASGN:
|
|
dvar_asgn(lhs->nd_vid, val);
|
|
break;
|
|
|
|
case NODE_DASGN_CURR:
|
|
dvar_asgn_curr(lhs->nd_vid, val);
|
|
break;
|
|
|
|
case NODE_CDECL:
|
|
if (lhs->nd_vid == 0) {
|
|
rb_const_set(class_prefix(self, lhs->nd_else), lhs->nd_else->nd_mid, val);
|
|
}
|
|
else {
|
|
rb_const_set(ruby_cbase, lhs->nd_vid, val);
|
|
}
|
|
break;
|
|
|
|
case NODE_CVDECL:
|
|
if (RTEST(ruby_verbose) && FL_TEST(ruby_cbase, FL_SINGLETON)) {
|
|
rb_warn("declaring singleton class variable");
|
|
}
|
|
rb_cvar_set(cvar_cbase(), lhs->nd_vid, val, Qtrue);
|
|
break;
|
|
|
|
case NODE_CVASGN:
|
|
rb_cvar_set(cvar_cbase(), lhs->nd_vid, val, Qfalse);
|
|
break;
|
|
|
|
case NODE_MASGN:
|
|
massign(self, lhs, val, pcall);
|
|
break;
|
|
|
|
case NODE_CALL:
|
|
case NODE_ATTRASGN:
|
|
{
|
|
VALUE recv;
|
|
calling_scope_t scope;
|
|
if (lhs->nd_recv == (NODE *)1) {
|
|
recv = self;
|
|
scope = CALLING_FUNCALL;
|
|
}
|
|
else {
|
|
recv = rb_eval(self, lhs->nd_recv);
|
|
scope = CALLING_NORMAL;
|
|
}
|
|
if (!lhs->nd_args) {
|
|
/* attr set */
|
|
ruby_current_node = lhs;
|
|
SET_CURRENT_SOURCE();
|
|
rb_call(CLASS_OF(recv), recv, lhs->nd_mid, 1, &val, 0, scope,0);
|
|
}
|
|
else {
|
|
/* array set */
|
|
VALUE args;
|
|
|
|
args = rb_eval(self, lhs->nd_args);
|
|
rb_ary_push(args, val);
|
|
ruby_current_node = lhs;
|
|
SET_CURRENT_SOURCE();
|
|
rb_call(CLASS_OF(recv), recv, lhs->nd_mid,
|
|
RARRAY(args)->len, RARRAY(args)->ptr, 0, scope,0);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case NODE_POSTARG:
|
|
{
|
|
NODE *v = lhs->nd_head;
|
|
int cnt;
|
|
VALUE *p;
|
|
|
|
if (lhs->nd_args && (long)(lhs->nd_args) != -1) {
|
|
assign(self, lhs->nd_args, val, 0);
|
|
}
|
|
cnt = lhs->nd_head->nd_alen;
|
|
if (RARRAY(val)->len < cnt) {
|
|
if (pcall) {
|
|
rb_raise(rb_eArgError, "wrong number of arguments");
|
|
}
|
|
else {
|
|
while (RARRAY(val)->len < cnt) {
|
|
v = v->nd_next;
|
|
cnt--;
|
|
}
|
|
}
|
|
}
|
|
p = RARRAY(val)->ptr + RARRAY(val)->len - cnt;
|
|
while (cnt--) {
|
|
assign(self, v->nd_head, *p++, 0);
|
|
v = v->nd_next;
|
|
}
|
|
cnt = lhs->nd_head->nd_alen;
|
|
while (cnt--) {
|
|
rb_ary_pop(val);
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
rb_bug("bug in variable assignment");
|
|
break;
|
|
}
|
|
}
|
|
|
|
VALUE
|
|
rb_iterate(VALUE (*it_proc)(VALUE), VALUE data1, VALUE (*bl_proc)(ANYARGS), VALUE data2)
|
|
{
|
|
int state;
|
|
volatile VALUE retval = Qnil;
|
|
NODE *node = NEW_IFUNC(bl_proc, data2);
|
|
VALUE self = ruby_top_self;
|
|
|
|
PUSH_TAG(PROT_LOOP);
|
|
PUSH_FRAME(Qtrue);
|
|
PUSH_BLOCK(ruby_frame->block, 0, node);
|
|
state = EXEC_TAG();
|
|
if (state == 0) {
|
|
iter_retry:
|
|
retval = (*it_proc)(data1);
|
|
}
|
|
else if (state == TAG_BREAK && TAG_DST()) {
|
|
retval = prot_tag->retval;
|
|
state = 0;
|
|
}
|
|
else if (state == TAG_RETRY) {
|
|
state = 0;
|
|
goto iter_retry;
|
|
}
|
|
POP_BLOCK();
|
|
POP_FRAME();
|
|
POP_TAG();
|
|
|
|
switch (state) {
|
|
case 0:
|
|
break;
|
|
default:
|
|
JUMP_TAG(state);
|
|
}
|
|
return retval;
|
|
}
|
|
|
|
struct iter_method_arg {
|
|
VALUE obj;
|
|
ID mid;
|
|
int argc;
|
|
VALUE *argv;
|
|
};
|
|
|
|
static VALUE
|
|
iterate_method(VALUE obj)
|
|
{
|
|
struct iter_method_arg *arg;
|
|
|
|
arg = (struct iter_method_arg*)obj;
|
|
return rb_call(CLASS_OF(arg->obj), arg->obj, arg->mid, arg->argc, arg->argv,
|
|
ruby_frame->block, CALLING_FUNCALL,1);
|
|
}
|
|
|
|
VALUE
|
|
rb_block_call(VALUE obj, ID mid, int argc, VALUE *argv, VALUE (*bl_proc)(ANYARGS), VALUE data2)
|
|
{
|
|
struct iter_method_arg arg;
|
|
|
|
arg.obj = obj;
|
|
arg.mid = mid;
|
|
arg.argc = argc;
|
|
arg.argv = argv;
|
|
return rb_iterate(iterate_method, (VALUE)&arg, bl_proc, data2);
|
|
}
|
|
|
|
VALUE
|
|
rb_each(VALUE obj)
|
|
{
|
|
return rb_call(CLASS_OF(obj), obj, rb_intern("each"), 0, 0,
|
|
ruby_frame->block, CALLING_FUNCALL,1);
|
|
}
|
|
|
|
static int
|
|
handle_rescue(VALUE self, NODE *node)
|
|
{
|
|
CALLARGS;
|
|
TMP_PROTECT;
|
|
|
|
if (!node->nd_args) {
|
|
return rb_obj_is_kind_of(ruby_errinfo, rb_eStandardError);
|
|
}
|
|
|
|
SETUP_ARGS(node->nd_args);
|
|
while (argc--) {
|
|
if (!rb_obj_is_kind_of(argv[0], rb_cModule)) {
|
|
rb_raise(rb_eTypeError, "class or module required for rescue clause");
|
|
}
|
|
if (RTEST(rb_funcall(*argv, eqq, 1, ruby_errinfo))) return 1;
|
|
argv++;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
VALUE
|
|
rb_rescue2(VALUE (*b_proc)(ANYARGS), VALUE data1, VALUE (*r_proc)(ANYARGS), VALUE data2, ...)
|
|
{
|
|
int state;
|
|
volatile VALUE result;
|
|
volatile VALUE e_info = ruby_errinfo;
|
|
volatile int handle = Qfalse;
|
|
VALUE eclass;
|
|
va_list args;
|
|
|
|
PUSH_TAG(PROT_NONE);
|
|
switch (state = EXEC_TAG()) {
|
|
case TAG_RETRY:
|
|
if (!handle) break;
|
|
handle = Qfalse;
|
|
state = 0;
|
|
ruby_errinfo = Qnil;
|
|
case 0:
|
|
result = (*b_proc)(data1);
|
|
break;
|
|
case TAG_RAISE:
|
|
if (handle) break;
|
|
handle = Qfalse;
|
|
va_start(args, data2);
|
|
while (eclass = va_arg(args, VALUE)) {
|
|
if (rb_obj_is_kind_of(ruby_errinfo, eclass)) {
|
|
handle = Qtrue;
|
|
break;
|
|
}
|
|
}
|
|
va_end(args);
|
|
|
|
if (handle) {
|
|
state = 0;
|
|
if (r_proc) {
|
|
result = (*r_proc)(data2, ruby_errinfo);
|
|
}
|
|
else {
|
|
result = Qnil;
|
|
}
|
|
ruby_errinfo = e_info;
|
|
}
|
|
}
|
|
POP_TAG();
|
|
if (state) JUMP_TAG(state);
|
|
|
|
return result;
|
|
}
|
|
|
|
VALUE
|
|
rb_rescue(VALUE (*b_proc)(ANYARGS), VALUE data1, VALUE (*r_proc)(ANYARGS), VALUE data2)
|
|
{
|
|
return rb_rescue2(b_proc, data1, r_proc, data2, rb_eStandardError, (VALUE)0);
|
|
}
|
|
|
|
static VALUE cont_protect;
|
|
|
|
VALUE
|
|
rb_protect(VALUE (*proc) (VALUE), VALUE data, int *state)
|
|
{
|
|
VALUE result = Qnil; /* OK */
|
|
int status;
|
|
|
|
PUSH_THREAD_TAG();
|
|
cont_protect = (VALUE)rb_node_newnode(NODE_MEMO, cont_protect, 0, 0);
|
|
if ((status = EXEC_TAG()) == 0) {
|
|
result = (*proc)(data);
|
|
}
|
|
else if (status == TAG_THREAD) {
|
|
rb_thread_start_1();
|
|
}
|
|
cont_protect = ((NODE *)cont_protect)->u1.value;
|
|
POP_THREAD_TAG();
|
|
if (state) {
|
|
*state = status;
|
|
}
|
|
if (status != 0) {
|
|
return Qnil;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
VALUE
|
|
rb_ensure(VALUE (*b_proc)(ANYARGS), VALUE data1, VALUE (*e_proc)(ANYARGS), VALUE data2)
|
|
{
|
|
int state;
|
|
volatile VALUE result = Qnil;
|
|
VALUE retval;
|
|
|
|
PUSH_TAG(PROT_NONE);
|
|
if ((state = EXEC_TAG()) == 0) {
|
|
result = (*b_proc)(data1);
|
|
}
|
|
POP_TAG();
|
|
retval = prot_tag ? prot_tag->retval : Qnil; /* save retval */
|
|
(*e_proc)(data2);
|
|
if (prot_tag) return_value(retval);
|
|
if (state) JUMP_TAG(state);
|
|
return result;
|
|
}
|
|
|
|
VALUE
|
|
rb_with_disable_interrupt(VALUE (*proc)(ANYARGS), VALUE data)
|
|
{
|
|
VALUE result = Qnil; /* OK */
|
|
int status;
|
|
|
|
DEFER_INTS;
|
|
{
|
|
int thr_critical = rb_thread_critical;
|
|
|
|
rb_thread_critical = Qtrue;
|
|
PUSH_TAG(PROT_NONE);
|
|
if ((status = EXEC_TAG()) == 0) {
|
|
result = (*proc)(data);
|
|
}
|
|
POP_TAG();
|
|
rb_thread_critical = thr_critical;
|
|
}
|
|
ENABLE_INTS;
|
|
if (status) JUMP_TAG(status);
|
|
|
|
return result;
|
|
}
|
|
|
|
static inline void
|
|
stack_check(void)
|
|
{
|
|
static int overflowing = 0;
|
|
|
|
if (!overflowing && ruby_stack_check()) {
|
|
int state;
|
|
overflowing = 1;
|
|
PUSH_TAG(PROT_NONE);
|
|
if ((state = EXEC_TAG()) == 0) {
|
|
rb_exc_raise(sysstack_error);
|
|
}
|
|
POP_TAG();
|
|
overflowing = 0;
|
|
JUMP_TAG(state);
|
|
}
|
|
}
|
|
|
|
static int last_call_status;
|
|
|
|
#define CSTAT_PRIV 1
|
|
#define CSTAT_PROT 2
|
|
#define CSTAT_VCALL 4
|
|
#define CSTAT_SUPER 8
|
|
|
|
/*
|
|
* call-seq:
|
|
* obj.method_missing(symbol [, *args] ) => result
|
|
*
|
|
* Invoked by Ruby when <i>obj</i> is sent a message it cannot handle.
|
|
* <i>symbol</i> is the symbol for the method called, and <i>args</i>
|
|
* are any arguments that were passed to it. By default, the interpreter
|
|
* raises an error when this method is called. However, it is possible
|
|
* to override the method to provide more dynamic behavior.
|
|
* The example below creates
|
|
* a class <code>Roman</code>, which responds to methods with names
|
|
* consisting of roman numerals, returning the corresponding integer
|
|
* values.
|
|
*
|
|
* class Roman
|
|
* def romanToInt(str)
|
|
* # ...
|
|
* end
|
|
* def method_missing(methId)
|
|
* str = methId.id2name
|
|
* romanToInt(str)
|
|
* end
|
|
* end
|
|
*
|
|
* r = Roman.new
|
|
* r.iv #=> 4
|
|
* r.xxiii #=> 23
|
|
* r.mm #=> 2000
|
|
*/
|
|
|
|
static VALUE
|
|
rb_method_missing(int argc, const VALUE *argv, VALUE obj)
|
|
{
|
|
ID id;
|
|
VALUE exc = rb_eNoMethodError;
|
|
const char *format = 0;
|
|
NODE *cnode = ruby_current_node;
|
|
|
|
if (argc == 0 || !SYMBOL_P(argv[0])) {
|
|
rb_raise(rb_eArgError, "no id given");
|
|
}
|
|
|
|
stack_check();
|
|
|
|
id = SYM2ID(argv[0]);
|
|
|
|
if (last_call_status & CSTAT_PRIV) {
|
|
format = "private method `%s' called for %s";
|
|
}
|
|
else if (last_call_status & CSTAT_PROT) {
|
|
format = "protected method `%s' called for %s";
|
|
}
|
|
else if (last_call_status & CSTAT_VCALL) {
|
|
format = "undefined local variable or method `%s' for %s";
|
|
exc = rb_eNameError;
|
|
}
|
|
else if (last_call_status & CSTAT_SUPER) {
|
|
format = "super: no superclass method `%s'";
|
|
}
|
|
if (!format) {
|
|
format = "undefined method `%s' for %s";
|
|
}
|
|
|
|
ruby_current_node = cnode;
|
|
{
|
|
int n = 0;
|
|
VALUE args[3];
|
|
|
|
args[n++] = rb_funcall(rb_const_get(exc, rb_intern("message")), '!',
|
|
3, rb_str_new2(format), obj, argv[0]);
|
|
args[n++] = argv[0];
|
|
if (exc == rb_eNoMethodError) {
|
|
args[n++] = rb_ary_new4(argc-1, argv+1);
|
|
}
|
|
exc = rb_class_new_instance(n, args, exc);
|
|
ruby_frame = ruby_frame->prev; /* pop frame for "method_missing" */
|
|
rb_exc_raise(exc);
|
|
}
|
|
|
|
return Qnil; /* not reached */
|
|
}
|
|
|
|
static VALUE
|
|
method_missing(VALUE obj, ID id, int argc, const VALUE *argv,
|
|
struct BLOCK *block, int call_status)
|
|
{
|
|
VALUE *nargv;
|
|
|
|
last_call_status = call_status;
|
|
|
|
if (id == missing) {
|
|
PUSH_FRAME(Qfalse);
|
|
ruby_frame->block = block;
|
|
rb_method_missing(argc, argv, obj);
|
|
POP_FRAME();
|
|
}
|
|
else if (id == ID_ALLOCATOR) {
|
|
rb_raise(rb_eTypeError, "allocator undefined for %s", rb_class2name(obj));
|
|
}
|
|
if (argc < 0) {
|
|
VALUE tmp;
|
|
|
|
argc = -argc-1;
|
|
tmp = svalue_to_avalue(argv[argc]);
|
|
nargv = ALLOCA_N(VALUE, argc + RARRAY(tmp)->len + 1);
|
|
MEMCPY(nargv+1, argv, VALUE, argc);
|
|
MEMCPY(nargv+1+argc, RARRAY(tmp)->ptr, VALUE, RARRAY(tmp)->len);
|
|
argc += RARRAY(tmp)->len;
|
|
|
|
}
|
|
else {
|
|
nargv = ALLOCA_N(VALUE, argc+1);
|
|
MEMCPY(nargv+1, argv, VALUE, argc);
|
|
}
|
|
nargv[0] = ID2SYM(id);
|
|
return rb_call(CLASS_OF(obj), obj, missing, argc+1, nargv, block, CALLING_FUNCALL, 0);
|
|
}
|
|
|
|
static inline VALUE
|
|
call_cfunc(VALUE (*func)(ANYARGS), VALUE recv, int len, int argc, const VALUE *argv)
|
|
{
|
|
if (len >= 0 && argc != len) {
|
|
rb_raise(rb_eArgError, "wrong number of arguments (%d for %d)",
|
|
argc, len);
|
|
}
|
|
|
|
switch (len) {
|
|
case -2:
|
|
return (*func)(recv, rb_ary_new4(argc, argv));
|
|
break;
|
|
case -1:
|
|
return (*func)(argc, argv, recv);
|
|
break;
|
|
case 0:
|
|
return (*func)(recv);
|
|
break;
|
|
case 1:
|
|
return (*func)(recv, argv[0]);
|
|
break;
|
|
case 2:
|
|
return (*func)(recv, argv[0], argv[1]);
|
|
break;
|
|
case 3:
|
|
return (*func)(recv, argv[0], argv[1], argv[2]);
|
|
break;
|
|
case 4:
|
|
return (*func)(recv, argv[0], argv[1], argv[2], argv[3]);
|
|
break;
|
|
case 5:
|
|
return (*func)(recv, argv[0], argv[1], argv[2], argv[3], argv[4]);
|
|
break;
|
|
case 6:
|
|
return (*func)(recv, argv[0], argv[1], argv[2], argv[3], argv[4],
|
|
argv[5]);
|
|
break;
|
|
case 7:
|
|
return (*func)(recv, argv[0], argv[1], argv[2], argv[3], argv[4],
|
|
argv[5], argv[6]);
|
|
break;
|
|
case 8:
|
|
return (*func)(recv, argv[0], argv[1], argv[2], argv[3], argv[4],
|
|
argv[5], argv[6], argv[7]);
|
|
break;
|
|
case 9:
|
|
return (*func)(recv, argv[0], argv[1], argv[2], argv[3], argv[4],
|
|
argv[5], argv[6], argv[7], argv[8]);
|
|
break;
|
|
case 10:
|
|
return (*func)(recv, argv[0], argv[1], argv[2], argv[3], argv[4],
|
|
argv[5], argv[6], argv[7], argv[8], argv[9]);
|
|
break;
|
|
case 11:
|
|
return (*func)(recv, argv[0], argv[1], argv[2], argv[3], argv[4],
|
|
argv[5], argv[6], argv[7], argv[8], argv[9], argv[10]);
|
|
break;
|
|
case 12:
|
|
return (*func)(recv, argv[0], argv[1], argv[2], argv[3], argv[4],
|
|
argv[5], argv[6], argv[7], argv[8], argv[9],
|
|
argv[10], argv[11]);
|
|
break;
|
|
case 13:
|
|
return (*func)(recv, argv[0], argv[1], argv[2], argv[3], argv[4],
|
|
argv[5], argv[6], argv[7], argv[8], argv[9], argv[10],
|
|
argv[11], argv[12]);
|
|
break;
|
|
case 14:
|
|
return (*func)(recv, argv[0], argv[1], argv[2], argv[3], argv[4],
|
|
argv[5], argv[6], argv[7], argv[8], argv[9], argv[10],
|
|
argv[11], argv[12], argv[13]);
|
|
break;
|
|
case 15:
|
|
return (*func)(recv, argv[0], argv[1], argv[2], argv[3], argv[4],
|
|
argv[5], argv[6], argv[7], argv[8], argv[9], argv[10],
|
|
argv[11], argv[12], argv[13], argv[14]);
|
|
break;
|
|
default:
|
|
rb_raise(rb_eArgError, "too many arguments (%d)", len);
|
|
break;
|
|
}
|
|
return Qnil; /* not reached */
|
|
}
|
|
|
|
static int
|
|
formal_assign(VALUE recv, NODE *node, int argc, const VALUE *argv, VALUE *local_vars)
|
|
{
|
|
int i;
|
|
int nopt = 0;
|
|
int npost = 0;
|
|
|
|
if (nd_type(node) != NODE_ARGS) {
|
|
rb_bug("no argument-node");
|
|
}
|
|
|
|
i = node->nd_frml ? RARRAY(node->nd_frml)->len : 0;
|
|
if (i > argc) {
|
|
rb_raise(rb_eArgError, "wrong number of arguments (%d for %d)", argc, i);
|
|
}
|
|
if (!node->nd_rest) {
|
|
NODE *optnode = node->nd_opt;
|
|
|
|
nopt = i;
|
|
while (optnode) {
|
|
nopt++;
|
|
optnode = optnode->nd_next;
|
|
}
|
|
if (nopt < argc) {
|
|
rb_raise(rb_eArgError, "wrong number of arguments (%d for %d)", argc, nopt);
|
|
}
|
|
}
|
|
if (local_vars) {
|
|
if (i > 0) {
|
|
/* +2 for $_ and $~ */
|
|
MEMCPY(local_vars+2, argv, VALUE, i);
|
|
}
|
|
}
|
|
else {
|
|
int j;
|
|
VALUE a = node->nd_frml;
|
|
|
|
for (j=0; j<i; j++) {
|
|
dvar_asgn_curr(SYM2ID(RARRAY(a)->ptr[j]), argv[j]);
|
|
}
|
|
}
|
|
argv += i; argc -= i;
|
|
if (node->nd_rest && nd_type(node->nd_rest) == NODE_POSTARG) {
|
|
npost = node->nd_rest->nd_head->nd_alen;
|
|
}
|
|
if (node->nd_opt) {
|
|
NODE *opt = node->nd_opt;
|
|
int ac = argc - npost;
|
|
|
|
while (opt && ac > 0) {
|
|
assign(recv, opt->nd_head, *argv, 1);
|
|
argv++; ac--;
|
|
++i;
|
|
opt = opt->nd_next;
|
|
}
|
|
if (opt) {
|
|
rb_eval(recv, opt);
|
|
}
|
|
argc = ac + npost;
|
|
}
|
|
if (!node->nd_rest) {
|
|
i = nopt;
|
|
}
|
|
else {
|
|
VALUE v;
|
|
|
|
if (argc > 0) {
|
|
int n = 1;
|
|
v = rb_ary_new4(argc,argv);
|
|
n += npost;
|
|
i += n*256;
|
|
}
|
|
else {
|
|
v = rb_ary_new2(0);
|
|
}
|
|
assign(recv, node->nd_rest, v, 1);
|
|
}
|
|
return i;
|
|
}
|
|
|
|
#define PUSH_METHOD_FRAME() \
|
|
PUSH_FRAME(Qfalse);\
|
|
ruby_frame->callee = id;\
|
|
ruby_frame->this_func = oid;\
|
|
ruby_frame->this_class = (flags & NOEX_NOSUPER)?0:klass;\
|
|
ruby_frame->self = recv;\
|
|
ruby_frame->argc = argc;\
|
|
ruby_frame->block = block;\
|
|
ruby_frame->flags = (flags & NOEX_RECV) ? FRAME_FUNC : 0;
|
|
|
|
static VALUE
|
|
rb_call0(VALUE klass, VALUE recv, ID id, ID oid,
|
|
int argc /* OK */, const VALUE *argv /* OK */,
|
|
struct BLOCK *block,
|
|
NODE *volatile body, int flags)
|
|
{
|
|
NODE *b2; /* OK */
|
|
volatile VALUE result = Qnil;
|
|
static int tick;
|
|
volatile int safe = -1;
|
|
TMP_PROTECT;
|
|
|
|
if (NOEX_SAFE(flags) > ruby_safe_level &&
|
|
ruby_safe_level == 0 && NOEX_SAFE(flags) > 2) {
|
|
rb_raise(rb_eSecurityError, "calling insecure method: %s",
|
|
rb_id2name(id));
|
|
}
|
|
if ((++tick & 0xff) == 0) {
|
|
CHECK_INTS; /* better than nothing */
|
|
stack_check();
|
|
rb_gc_finalize_deferred();
|
|
}
|
|
if (argc >= 256) {
|
|
VALUE tmp;
|
|
VALUE *nargv;
|
|
int n = argc / 256 - 1;
|
|
|
|
argc %= 256;
|
|
tmp = svalue_to_avalue(argv[argc]);
|
|
nargv = TMP_ALLOC(argc + RARRAY(tmp)->len + n);
|
|
MEMCPY(nargv, argv, VALUE, argc);
|
|
MEMCPY(nargv+argc, RARRAY(tmp)->ptr, VALUE, RARRAY(tmp)->len);
|
|
MEMCPY(nargv + argc + RARRAY(tmp)->len, argv + argc + 1, VALUE, n);
|
|
argc += RARRAY(tmp)->len + n;
|
|
argv = nargv;
|
|
}
|
|
switch (nd_type(body)) {
|
|
case NODE_CFUNC:
|
|
{
|
|
int len = body->nd_argc;
|
|
|
|
if (len < -2) {
|
|
rb_bug("bad argc (%d) specified for `%s(%s)'",
|
|
len, rb_class2name(klass), rb_id2name(id));
|
|
}
|
|
PUSH_METHOD_FRAME();
|
|
if (event_hooks) {
|
|
int state;
|
|
|
|
EXEC_EVENT_HOOK(RUBY_EVENT_C_CALL, ruby_current_node,
|
|
recv, id, klass);
|
|
PUSH_TAG(PROT_FUNC);
|
|
if ((state = EXEC_TAG()) == 0) {
|
|
result = call_cfunc(body->nd_cfnc, recv, len, argc, argv);
|
|
}
|
|
POP_TAG();
|
|
ruby_current_node = ruby_frame->node;
|
|
EXEC_EVENT_HOOK(RUBY_EVENT_C_RETURN, ruby_current_node,
|
|
recv, id, klass);
|
|
if (state) JUMP_TAG(state);
|
|
}
|
|
else {
|
|
result = call_cfunc(body->nd_cfnc, recv, len, argc, argv);
|
|
}
|
|
POP_FRAME();
|
|
}
|
|
break;
|
|
|
|
/* for attr get/set */
|
|
case NODE_IVAR:
|
|
if (argc != 0) {
|
|
rb_raise(rb_eArgError, "wrong number of arguments (%d for 0)", argc);
|
|
}
|
|
result = rb_attr_get(recv, body->nd_vid);
|
|
break;
|
|
|
|
case NODE_ATTRSET:
|
|
if (argc != 1)
|
|
rb_raise(rb_eArgError, "wrong number of arguments (%d for 1)", argc);
|
|
result = rb_ivar_set(recv, body->nd_vid, argv[0]);
|
|
break;
|
|
|
|
case NODE_ZSUPER: /* visibility override */
|
|
result = call_super_0(klass, recv, oid, argc, argv, block);
|
|
break;
|
|
|
|
case NODE_BMETHOD:
|
|
PUSH_METHOD_FRAME();
|
|
ruby_frame->flags |= FRAME_DMETH;
|
|
if (event_hooks) {
|
|
struct BLOCK *data;
|
|
Data_Get_Struct(body->nd_cval, struct BLOCK, data);
|
|
EXEC_EVENT_HOOK(RUBY_EVENT_CALL, data->body, recv, id, klass);
|
|
}
|
|
result = proc_invoke(body->nd_cval, rb_ary_new4(argc, argv), recv, klass, 1);
|
|
if (event_hooks) {
|
|
EXEC_EVENT_HOOK(RUBY_EVENT_RETURN, body, recv, id, klass);
|
|
}
|
|
POP_FRAME();
|
|
break;
|
|
|
|
case NODE_SCOPE:
|
|
{
|
|
int state;
|
|
VALUE *local_vars; /* OK */
|
|
NODE *saved_cref = 0;
|
|
|
|
PUSH_METHOD_FRAME();
|
|
PUSH_SCOPE();
|
|
if (body->nd_rval) {
|
|
saved_cref = ruby_cref;
|
|
ruby_cref = (NODE*)body->nd_rval;
|
|
}
|
|
if (body->nd_tbl) {
|
|
local_vars = TMP_ALLOC(body->nd_tbl[0]+1);
|
|
*local_vars++ = (VALUE)body;
|
|
rb_mem_clear(local_vars, body->nd_tbl[0]);
|
|
ruby_scope->local_tbl = body->nd_tbl;
|
|
ruby_scope->local_vars = local_vars;
|
|
}
|
|
else {
|
|
local_vars = ruby_scope->local_vars = 0;
|
|
ruby_scope->local_tbl = 0;
|
|
}
|
|
b2 = body = body->nd_next;
|
|
|
|
if (NOEX_SAFE(flags) > ruby_safe_level) {
|
|
safe = ruby_safe_level;
|
|
ruby_safe_level = NOEX_SAFE(flags);
|
|
}
|
|
PUSH_VARS();
|
|
PUSH_TAG(PROT_FUNC);
|
|
if ((state = EXEC_TAG()) == 0) {
|
|
NODE *node = 0;
|
|
|
|
if (nd_type(body) == NODE_ARGS) {
|
|
node = body;
|
|
body = 0;
|
|
}
|
|
else if (nd_type(body) == NODE_BLOCK) {
|
|
node = body->nd_head;
|
|
body = body->nd_next;
|
|
}
|
|
if (node) {
|
|
ruby_frame->argc =
|
|
formal_assign(recv, node, argc, argv, local_vars);
|
|
}
|
|
|
|
if (event_hooks) {
|
|
EXEC_EVENT_HOOK(RUBY_EVENT_CALL, b2, recv, id, klass);
|
|
}
|
|
result = rb_eval(recv, body);
|
|
}
|
|
else if (state == TAG_RETURN && TAG_DST()) {
|
|
result = prot_tag->retval;
|
|
state = 0;
|
|
}
|
|
POP_TAG();
|
|
if (event_hooks) {
|
|
EXEC_EVENT_HOOK(RUBY_EVENT_RETURN, body, recv, id, klass);
|
|
}
|
|
POP_VARS();
|
|
POP_SCOPE();
|
|
ruby_cref = saved_cref;
|
|
if (safe >= 0) ruby_safe_level = safe;
|
|
POP_FRAME();
|
|
switch (state) {
|
|
case 0:
|
|
break;
|
|
|
|
case TAG_BREAK:
|
|
case TAG_RETURN:
|
|
JUMP_TAG(state);
|
|
break;
|
|
|
|
case TAG_RETRY:
|
|
if (block) JUMP_TAG(state);
|
|
/* fall through */
|
|
default:
|
|
jump_tag_but_local_jump(state, result);
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
unknown_node(body);
|
|
break;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
static VALUE
|
|
rb_call(VALUE klass, VALUE recv, ID mid,
|
|
int argc /* OK */, const VALUE *argv /* OK */, struct BLOCK *block,
|
|
calling_scope_t scope, int iter)
|
|
{
|
|
NODE *body; /* OK */
|
|
int noex;
|
|
ID id = mid;
|
|
struct cache_entry *ent = 0;
|
|
|
|
if (!klass) {
|
|
rb_raise(rb_eNotImpError, "method `%s' called on terminated object (%p)",
|
|
rb_id2name(mid), (void*)recv);
|
|
}
|
|
switch (scope) {
|
|
case CALLING_FCALL:
|
|
case CALLING_VCALL:
|
|
if (recv == ruby_frame->self) {
|
|
noex = LOOKUP_LOCAL;
|
|
break;
|
|
}
|
|
/* fall thtough */
|
|
default:
|
|
noex = LOOKUP_NORMAL;
|
|
break;
|
|
}
|
|
|
|
/* is it in the method cache? */
|
|
if (noex == LOOKUP_LOCAL) {
|
|
ent = cache[LOOKUP_FCALL] + EXPR1(ruby_frame->this_class, mid);
|
|
if (ent->mid != mid || ent->klass != ruby_frame->this_class) {
|
|
ent = NULL;
|
|
}
|
|
}
|
|
if (!ent) {
|
|
ent = cache[LOOKUP_NORMAL] + EXPR1(klass, mid);
|
|
if (ent->mid != mid || ent->klass != klass) {
|
|
ent = NULL;
|
|
}
|
|
}
|
|
if (ent) {
|
|
if (!ent->method)
|
|
return method_missing(recv, mid, argc, argv, block,
|
|
scope==CALLING_VCALL?CSTAT_VCALL:0);
|
|
klass = ent->origin;
|
|
id = ent->mid0;
|
|
noex = ent->noex;
|
|
body = ent->method;
|
|
}
|
|
else if ((body = rb_get_method_body(&klass, &id, &noex)) == 0) {
|
|
if (scope == CALLING_SUPER) {
|
|
return method_missing(recv, mid, argc, argv, block, CSTAT_SUPER);
|
|
}
|
|
return method_missing(recv, mid, argc, argv, block, scope==CALLING_VCALL?CSTAT_VCALL:0);
|
|
}
|
|
|
|
if (mid != missing && scope == CALLING_NORMAL) {
|
|
/* receiver specified form for private method */
|
|
if (noex & NOEX_PRIVATE)
|
|
return method_missing(recv, mid, argc, argv, block, CSTAT_PRIV);
|
|
|
|
/* self must be kind of a specified form for protected method */
|
|
if (noex & NOEX_PROTECTED) {
|
|
VALUE defined_class = klass;
|
|
|
|
if (TYPE(defined_class) == T_ICLASS) {
|
|
defined_class = RBASIC(defined_class)->klass;
|
|
}
|
|
if (!rb_obj_is_kind_of(ruby_frame->self, rb_class_real(defined_class)))
|
|
return method_missing(recv, mid, argc, argv, block, CSTAT_PROT);
|
|
}
|
|
}
|
|
if (scope > CALLING_NORMAL) { /* pass receiver info */
|
|
noex |= NOEX_RECV;
|
|
}
|
|
if (block && !iter && !block_orphan(block)) {
|
|
VALUE result;
|
|
int state;
|
|
|
|
PUSH_TAG(PROT_LOOP);
|
|
state = EXEC_TAG();
|
|
if (state == 0) {
|
|
result = rb_call0(klass, recv, mid, id, argc, argv, block, body, noex);
|
|
}
|
|
else if (state == TAG_BREAK && TAG_DST()) {
|
|
result = prot_tag->retval;
|
|
state = 0;
|
|
}
|
|
POP_TAG();
|
|
if (state) JUMP_TAG(state);
|
|
return result;
|
|
}
|
|
else {
|
|
return rb_call0(klass, recv, mid, id, argc, argv, block, body, noex);
|
|
}
|
|
}
|
|
|
|
VALUE
|
|
rb_apply(VALUE recv, ID mid, VALUE args)
|
|
{
|
|
int argc;
|
|
VALUE *argv;
|
|
|
|
argc = RARRAY(args)->len; /* Assigns LONG, but argc is INT */
|
|
argv = ALLOCA_N(VALUE, argc);
|
|
MEMCPY(argv, RARRAY(args)->ptr, VALUE, argc);
|
|
return rb_call(CLASS_OF(recv), recv, mid, argc, argv, 0, CALLING_FUNCALL, 0);
|
|
}
|
|
|
|
static VALUE
|
|
send_funcall(int argc, VALUE *argv, VALUE recv, calling_scope_t scope)
|
|
{
|
|
VALUE vid;
|
|
|
|
if (argc == 0) rb_raise(rb_eArgError, "no method name given");
|
|
|
|
vid = *argv++; argc--;
|
|
vid = rb_call(CLASS_OF(recv), recv, rb_to_id(vid), argc, argv,
|
|
ruby_frame->block, scope, 1);
|
|
|
|
return vid;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* obj.send(symbol [, args...]) => obj
|
|
* obj.__send(symbol [, args...]) => obj
|
|
*
|
|
* Invokes the method identified by _symbol_, passing it any
|
|
* arguments specified. You can use <code>\_\_send__</code> if the name
|
|
* +send+ clashes with an existing method in _obj_. Raises an
|
|
* NoMethodError exception for private methods except when it is
|
|
* called in function call style.
|
|
*
|
|
* class Klass
|
|
* def hello(*args)
|
|
* "Hello " + args.join(' ')
|
|
* end
|
|
* end
|
|
* k = Klass.new
|
|
* k.send :hello, "gentle", "readers" #=> "Hello gentle readers"
|
|
*
|
|
* 1.send(:puts, "foo") # NoMethodError exception
|
|
* send(:puts, "foo") # prints "foo"
|
|
*/
|
|
|
|
static VALUE
|
|
rb_f_send(int argc, VALUE *argv, VALUE recv)
|
|
{
|
|
calling_scope_t scope;
|
|
|
|
if (ruby_frame->flags & FRAME_FUNC) {
|
|
scope = CALLING_FCALL;
|
|
}
|
|
else {
|
|
scope = CALLING_NORMAL;
|
|
}
|
|
return send_funcall(argc, argv, recv, scope);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* obj.funcall(symbol [, args...]) => obj
|
|
* obj.__send!(symbol [, args...]) => obj
|
|
*
|
|
* Invokes the method identified by _symbol_, passing it any
|
|
* arguments specified. Unlike send, which calls private methods only
|
|
* when it is invoked in function call style, funcall always aware of
|
|
* private methods.
|
|
*
|
|
* 1.funcall(:puts, "hello") # prints "foo"
|
|
*/
|
|
|
|
static VALUE
|
|
rb_f_funcall(int argc, VALUE *argv, VALUE recv)
|
|
{
|
|
return send_funcall(argc, argv, recv, CALLING_FUNCALL);
|
|
}
|
|
|
|
VALUE
|
|
rb_funcall(VALUE recv, ID mid, int n, ...)
|
|
{
|
|
VALUE *argv;
|
|
va_list ar;
|
|
va_start(ar, n);
|
|
|
|
if (n > 0) {
|
|
long i;
|
|
|
|
argv = ALLOCA_N(VALUE, n);
|
|
|
|
for (i=0;i<n;i++) {
|
|
argv[i] = va_arg(ar, VALUE);
|
|
}
|
|
va_end(ar);
|
|
}
|
|
else {
|
|
argv = 0;
|
|
}
|
|
|
|
return rb_call(CLASS_OF(recv), recv, mid, n, argv, 0, CALLING_FUNCALL, 0);
|
|
}
|
|
|
|
VALUE
|
|
rb_funcall2(VALUE recv, ID mid, int argc, const VALUE *argv)
|
|
{
|
|
return rb_call(CLASS_OF(recv), recv, mid, argc, argv, 0, CALLING_FUNCALL, 0);
|
|
}
|
|
|
|
VALUE
|
|
rb_funcall3(VALUE recv, ID mid, int argc, const VALUE *argv)
|
|
{
|
|
return rb_call(CLASS_OF(recv), recv, mid, argc, argv, 0, CALLING_NORMAL, 0);
|
|
}
|
|
|
|
static VALUE
|
|
call_super_0(VALUE klass, VALUE self, ID mid,
|
|
int argc, const VALUE *argv, struct BLOCK *block)
|
|
{
|
|
if (RCLASS(klass)->super == 0) {
|
|
return method_missing(self, mid, argc, argv, block, CSTAT_SUPER);
|
|
}
|
|
|
|
return rb_call(RCLASS(klass)->super, self, mid, argc, argv, block, CALLING_SUPER, 1);
|
|
}
|
|
|
|
static VALUE
|
|
call_super(int argc, const VALUE *argv, struct BLOCK *block)
|
|
{
|
|
if (ruby_frame->this_class == 0) {
|
|
rb_name_error(ruby_frame->callee, "calling `super' from `%s' is prohibited",
|
|
rb_id2name(ruby_frame->this_func));
|
|
}
|
|
return call_super_0(ruby_frame->this_class, ruby_frame->self,
|
|
ruby_frame->this_func, argc, argv, block);
|
|
}
|
|
|
|
VALUE
|
|
rb_call_super(int argc, const VALUE *argv)
|
|
{
|
|
return call_super(argc, argv, ruby_frame->block);
|
|
}
|
|
|
|
static VALUE
|
|
backtrace(int lev)
|
|
{
|
|
struct FRAME *frame = ruby_frame;
|
|
VALUE str;
|
|
volatile VALUE ary;
|
|
NODE *n;
|
|
|
|
ary = rb_ary_new();
|
|
if (frame->this_func == ID_ALLOCATOR) {
|
|
frame = frame->prev;
|
|
}
|
|
if (lev < 0) {
|
|
str = error_line(frame, 0);
|
|
rb_ary_push(ary, str);
|
|
if (lev < -1) return ary;
|
|
}
|
|
else {
|
|
while (lev-- > 0) {
|
|
frame = frame->prev;
|
|
if (!frame) {
|
|
ary = Qnil;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
for (; frame && (n = frame->node); frame = frame->prev) {
|
|
if (frame->prev && frame->prev->this_func) {
|
|
if (frame->prev->node == n) {
|
|
if (frame->prev->this_func == frame->this_func) continue;
|
|
}
|
|
str = error_line(frame->prev, n);
|
|
}
|
|
else {
|
|
str = rb_sprintf("%s:%d", n->nd_file, nd_line(n));
|
|
}
|
|
rb_ary_push(ary, str);
|
|
}
|
|
|
|
return ary;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* caller(start=1) => array
|
|
*
|
|
* Returns the current execution stack---an array containing strings in
|
|
* the form ``<em>file:line</em>'' or ``<em>file:line: in
|
|
* `method'</em>''. The optional <i>start</i>_ parameter
|
|
* determines the number of initial stack entries to omit from the
|
|
* result.
|
|
*
|
|
* def a(skip)
|
|
* caller(skip)
|
|
* end
|
|
* def b(skip)
|
|
* a(skip)
|
|
* end
|
|
* def c(skip)
|
|
* b(skip)
|
|
* end
|
|
* c(0) #=> ["prog:2:in `a'", "prog:5:in `b'", "prog:8:in `c'", "prog:10"]
|
|
* c(1) #=> ["prog:5:in `b'", "prog:8:in `c'", "prog:11"]
|
|
* c(2) #=> ["prog:8:in `c'", "prog:12"]
|
|
* c(3) #=> ["prog:13"]
|
|
*/
|
|
|
|
static VALUE
|
|
rb_f_caller(int argc, VALUE *argv)
|
|
{
|
|
VALUE level;
|
|
int lev;
|
|
|
|
rb_scan_args(argc, argv, "01", &level);
|
|
|
|
if (NIL_P(level)) lev = 1;
|
|
else lev = NUM2INT(level);
|
|
if (lev < 0) rb_raise(rb_eArgError, "negative level (%d)", lev);
|
|
|
|
return backtrace(lev);
|
|
}
|
|
|
|
void
|
|
rb_backtrace(void)
|
|
{
|
|
long i;
|
|
VALUE ary;
|
|
|
|
ary = backtrace(-1);
|
|
for (i=0; i<RARRAY(ary)->len; i++) {
|
|
printf("\tfrom %s\n", RSTRING(RARRAY(ary)->ptr[i])->ptr);
|
|
}
|
|
}
|
|
|
|
static VALUE
|
|
make_backtrace(void)
|
|
{
|
|
return backtrace(-1);
|
|
}
|
|
|
|
ID
|
|
rb_frame_this_func(void)
|
|
{
|
|
return ruby_frame->this_func;
|
|
}
|
|
|
|
static NODE*
|
|
compile(VALUE src, const char *file, int line)
|
|
{
|
|
NODE *node;
|
|
int critical;
|
|
|
|
ruby_nerrs = 0;
|
|
StringValue(src);
|
|
critical = rb_thread_critical;
|
|
rb_thread_critical = Qtrue;
|
|
node = rb_compile_string(file, src, line);
|
|
rb_thread_critical = critical;
|
|
|
|
if (ruby_nerrs == 0) return node;
|
|
return 0;
|
|
}
|
|
|
|
static VALUE
|
|
eval(VALUE self, VALUE src, VALUE scope, const char *file, int line)
|
|
{
|
|
struct BLOCK *data = NULL;
|
|
volatile VALUE result = Qnil;
|
|
struct SCOPE * volatile old_scope;
|
|
struct RVarmap * volatile old_dyna_vars;
|
|
VALUE volatile old_cref;
|
|
int volatile old_vmode;
|
|
volatile VALUE old_wrapper;
|
|
struct FRAME frame;
|
|
NODE *nodesave = ruby_current_node;
|
|
volatile int safe = ruby_safe_level;
|
|
int state;
|
|
|
|
if (!NIL_P(scope)) {
|
|
if (!rb_obj_is_proc(scope)) {
|
|
rb_raise(rb_eTypeError, "wrong argument type %s (expected Proc/Binding)",
|
|
rb_obj_classname(scope));
|
|
}
|
|
|
|
Data_Get_Struct(scope, struct BLOCK, data);
|
|
/* PUSH BLOCK from data */
|
|
frame = data->frame;
|
|
frame.tmp = ruby_frame; /* gc protection */
|
|
ruby_frame = &(frame);
|
|
old_scope = ruby_scope;
|
|
ruby_scope = data->scope;
|
|
old_dyna_vars = ruby_dyna_vars;
|
|
ruby_dyna_vars = data->dyna_vars;
|
|
old_vmode = vis_mode;
|
|
vis_mode = data->vmode;
|
|
old_cref = (VALUE)ruby_cref;
|
|
ruby_cref = data->cref;
|
|
old_wrapper = ruby_wrapper;
|
|
ruby_wrapper = data->wrapper;
|
|
if ((file == 0 || (line == 1 && strcmp(file, "(eval)") == 0)) && data->frame.node) {
|
|
file = data->frame.node->nd_file;
|
|
if (!file) file = "__builtin__";
|
|
line = nd_line(data->frame.node);
|
|
}
|
|
|
|
self = data->self;
|
|
}
|
|
if (file == 0) {
|
|
ruby_set_current_source();
|
|
file = ruby_sourcefile;
|
|
line = ruby_sourceline;
|
|
}
|
|
ruby_in_eval++;
|
|
if (TYPE(ruby_cbase) == T_ICLASS) {
|
|
ruby_cbase = RBASIC(ruby_cbase)->klass;
|
|
}
|
|
PUSH_TAG(PROT_NONE);
|
|
if ((state = EXEC_TAG()) == 0) {
|
|
NODE *node;
|
|
|
|
ruby_safe_level = 0;
|
|
result = ruby_errinfo;
|
|
ruby_errinfo = Qnil;
|
|
node = compile(src, file, line);
|
|
ruby_safe_level = safe;
|
|
if (ruby_nerrs > 0) {
|
|
compile_error(0);
|
|
}
|
|
if (!NIL_P(result)) ruby_errinfo = result;
|
|
result = eval_node(self, node);
|
|
}
|
|
POP_TAG();
|
|
ruby_in_eval--;
|
|
if (!NIL_P(scope)) {
|
|
int dont_recycle = ruby_scope->flags & SCOPE_DONT_RECYCLE;
|
|
|
|
ruby_wrapper = old_wrapper;
|
|
ruby_cref = (NODE*)old_cref;
|
|
ruby_frame = frame.tmp;
|
|
ruby_scope = old_scope;
|
|
ruby_dyna_vars = old_dyna_vars;
|
|
vis_mode = old_vmode;
|
|
if (dont_recycle) {
|
|
struct tag *tag;
|
|
struct RVarmap *vars;
|
|
|
|
scope_dup(ruby_scope);
|
|
for (tag=prot_tag; tag; tag=tag->prev) {
|
|
scope_dup(tag->scope);
|
|
}
|
|
for (vars = ruby_dyna_vars; vars; vars = vars->next) {
|
|
FL_SET(vars, DVAR_DONT_RECYCLE);
|
|
}
|
|
}
|
|
}
|
|
ruby_current_node = nodesave;
|
|
ruby_set_current_source();
|
|
if (state) {
|
|
if (state == TAG_RAISE) {
|
|
if (strcmp(file, "(eval)") == 0) {
|
|
VALUE mesg, errat;
|
|
|
|
errat = get_backtrace(ruby_errinfo);
|
|
mesg = rb_attr_get(ruby_errinfo, rb_intern("mesg"));
|
|
if (!NIL_P(errat) && TYPE(errat) == T_ARRAY) {
|
|
if (!NIL_P(mesg) && TYPE(mesg) == T_STRING) {
|
|
rb_str_update(mesg, 0, 0, rb_str_new2(": "));
|
|
rb_str_update(mesg, 0, 0, RARRAY(errat)->ptr[0]);
|
|
}
|
|
RARRAY(errat)->ptr[0] = RARRAY(backtrace(-2))->ptr[0];
|
|
}
|
|
}
|
|
rb_exc_raise(ruby_errinfo);
|
|
}
|
|
JUMP_TAG(state);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* eval(string [, binding [, filename [,lineno]]]) => obj
|
|
*
|
|
* Evaluates the Ruby expression(s) in <em>string</em>. If
|
|
* <em>binding</em> is given, the evaluation is performed in its
|
|
* context. The binding may be a <code>Binding</code> object or a
|
|
* <code>Proc</code> object. If the optional <em>filename</em> and
|
|
* <em>lineno</em> parameters are present, they will be used when
|
|
* reporting syntax errors.
|
|
*
|
|
* def getBinding(str)
|
|
* return binding
|
|
* end
|
|
* str = "hello"
|
|
* eval "str + ' Fred'" #=> "hello Fred"
|
|
* eval "str + ' Fred'", getBinding("bye") #=> "bye Fred"
|
|
*/
|
|
|
|
static VALUE
|
|
rb_f_eval(int argc, VALUE *argv, VALUE self)
|
|
{
|
|
VALUE src, scope, vfile, vline;
|
|
const char *file = "(eval)";
|
|
int line = 1;
|
|
|
|
rb_scan_args(argc, argv, "13", &src, &scope, &vfile, &vline);
|
|
if (ruby_safe_level >= 4) {
|
|
StringValue(src);
|
|
if (!NIL_P(scope) && !OBJ_TAINTED(scope)) {
|
|
rb_raise(rb_eSecurityError, "Insecure: can't modify trusted binding");
|
|
}
|
|
}
|
|
else {
|
|
SafeStringValue(src);
|
|
}
|
|
if (argc >= 3) {
|
|
StringValue(vfile);
|
|
}
|
|
if (argc >= 4) {
|
|
line = NUM2INT(vline);
|
|
}
|
|
|
|
if (!NIL_P(vfile)) file = RSTRING(vfile)->ptr;
|
|
if (NIL_P(scope) && ruby_frame->prev) {
|
|
struct FRAME *prev;
|
|
VALUE val;
|
|
|
|
prev = ruby_frame;
|
|
PUSH_FRAME(Qfalse);
|
|
*ruby_frame = *prev->prev;
|
|
ruby_frame->prev = prev;
|
|
val = eval(self, src, scope, file, line);
|
|
POP_FRAME();
|
|
|
|
return val;
|
|
}
|
|
return eval(self, src, scope, file, line);
|
|
}
|
|
|
|
/* function to call func under the specified class/module context */
|
|
static VALUE
|
|
exec_under(VALUE (*func) (VALUE), VALUE under, VALUE args)
|
|
{
|
|
VALUE val = Qnil; /* OK */
|
|
int state;
|
|
int mode;
|
|
struct FRAME *f = ruby_frame;
|
|
|
|
PUSH_CREF(under);
|
|
PUSH_FRAME(Qtrue);
|
|
ruby_frame->self = f->self;
|
|
ruby_frame->callee = f->callee;
|
|
ruby_frame->this_func = f->this_func;
|
|
ruby_frame->this_class = f->this_class;
|
|
ruby_frame->argc = f->argc;
|
|
|
|
mode = vis_mode;
|
|
VIS_SET(VIS_PUBLIC);
|
|
PUSH_TAG(PROT_NONE);
|
|
if ((state = EXEC_TAG()) == 0) {
|
|
val = (*func)(args);
|
|
}
|
|
POP_TAG();
|
|
POP_CREF();
|
|
VIS_SET(mode);
|
|
POP_FRAME();
|
|
if (state) JUMP_TAG(state);
|
|
|
|
return val;
|
|
}
|
|
|
|
static VALUE
|
|
eval_under_i(VALUE arg)
|
|
{
|
|
VALUE *args = (VALUE *)arg;
|
|
struct FRAME *f = ruby_frame;
|
|
|
|
if (f && (f = f->prev) && (f = f->prev)) {
|
|
ruby_frame = f;
|
|
}
|
|
return eval(args[0], args[1], Qnil, (char*)args[2], (int)args[3]);
|
|
}
|
|
|
|
/* string eval under the class/module context */
|
|
static VALUE
|
|
eval_under(VALUE under, VALUE self, VALUE src, const char *file, int line)
|
|
{
|
|
VALUE args[4];
|
|
|
|
if (ruby_safe_level >= 4) {
|
|
StringValue(src);
|
|
}
|
|
else {
|
|
SafeStringValue(src);
|
|
}
|
|
args[0] = self;
|
|
args[1] = src;
|
|
args[2] = (VALUE)file;
|
|
args[3] = (VALUE)line;
|
|
return exec_under(eval_under_i, under, (VALUE)args);
|
|
}
|
|
|
|
static VALUE
|
|
yield_under_i(VALUE arg)
|
|
{
|
|
VALUE *args = (VALUE *)arg;
|
|
int flags = YIELD_PUBLIC_DEF;
|
|
if (args[0] != Qundef) flags |= YIELD_ARY_ARGS;
|
|
|
|
return rb_yield_0(args[0], args[1], ruby_cbase, flags);
|
|
}
|
|
|
|
/* block eval under the class/module context */
|
|
static VALUE
|
|
yield_under(VALUE under, VALUE self, VALUE values)
|
|
{
|
|
VALUE args[2];
|
|
args[0] = values;
|
|
args[1] = self;
|
|
return exec_under(yield_under_i, under, (VALUE)args);
|
|
}
|
|
|
|
static VALUE
|
|
specific_eval(int argc, VALUE *argv, VALUE klass, VALUE self)
|
|
{
|
|
if (rb_block_given_p()) {
|
|
if (argc > 0) {
|
|
rb_raise(rb_eArgError, "wrong number of arguments (%d for 0)", argc);
|
|
}
|
|
return yield_under(klass, self, Qundef);
|
|
}
|
|
else {
|
|
const char *file = "(eval)";
|
|
int line = 1;
|
|
|
|
if (argc == 0) {
|
|
rb_raise(rb_eArgError, "block not supplied");
|
|
}
|
|
else {
|
|
if (ruby_safe_level >= 4) {
|
|
StringValue(argv[0]);
|
|
}
|
|
else {
|
|
SafeStringValue(argv[0]);
|
|
}
|
|
if (argc > 3) {
|
|
rb_raise(rb_eArgError, "wrong number of arguments: %s(src) or %s{..}",
|
|
rb_id2name(ruby_frame->callee),
|
|
rb_id2name(ruby_frame->callee));
|
|
}
|
|
if (argc > 2) line = NUM2INT(argv[2]);
|
|
if (argc > 1) {
|
|
file = StringValuePtr(argv[1]);
|
|
}
|
|
}
|
|
return eval_under(klass, self, argv[0], file, line);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* obj.instance_eval(string [, filename [, lineno]] ) => obj
|
|
* obj.instance_eval {| | block } => obj
|
|
*
|
|
* Evaluates a string containing Ruby source code, or the given block,
|
|
* within the context of the receiver (_obj_). In order to set the
|
|
* context, the variable +self+ is set to _obj_ while
|
|
* the code is executing, giving the code access to _obj_'s
|
|
* instance variables. In the version of <code>instance_eval</code>
|
|
* that takes a +String+, the optional second and third
|
|
* parameters supply a filename and starting line number that are used
|
|
* when reporting compilation errors. Note that, if a Proc that is
|
|
* converted from a Method object is given as the block,
|
|
* <code>instance_eval</code> will not change the context of this
|
|
* block and it will be evaluated in Method object's original context.
|
|
*
|
|
* class Klass
|
|
* def initialize
|
|
* @secret = 99
|
|
* end
|
|
* end
|
|
* k = Klass.new
|
|
* k.instance_eval { @secret } #=> 99
|
|
*/
|
|
|
|
VALUE
|
|
rb_obj_instance_eval(int argc, VALUE *argv, VALUE self)
|
|
{
|
|
VALUE klass;
|
|
|
|
if (SPECIAL_CONST_P(self)) {
|
|
klass = Qnil;
|
|
}
|
|
else {
|
|
klass = rb_singleton_class(self);
|
|
}
|
|
return specific_eval(argc, argv, klass, self);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* obj.instance_exec(arg...) {|var...| block } => obj
|
|
*
|
|
* Executes the given block within the context of the receiver
|
|
* (_obj_). In order to set the context, the variable +self+ is set
|
|
* to _obj_ while the code is executing, giving the code access to
|
|
* _obj_'s instance variables. Arguments are passed as block parameters.
|
|
*
|
|
* class Klass
|
|
* def initialize
|
|
* @secret = 99
|
|
* end
|
|
* end
|
|
* k = Klass.new
|
|
* k.instance_exec(5) {|x| @secret+x } #=> 104
|
|
*/
|
|
|
|
VALUE
|
|
rb_obj_instance_exec(int argc, VALUE *argv, VALUE self)
|
|
{
|
|
VALUE klass;
|
|
|
|
if (SPECIAL_CONST_P(self)) {
|
|
klass = Qnil;
|
|
}
|
|
else {
|
|
klass = rb_singleton_class(self);
|
|
}
|
|
return yield_under(klass, self, rb_ary_new4(argc, argv));
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* mod.class_eval(string [, filename [, lineno]]) => obj
|
|
* mod.module_eval {|| block } => obj
|
|
*
|
|
* Evaluates the string or block in the context of _mod_. This can
|
|
* be used to add methods to a class. <code>module_eval</code> returns
|
|
* the result of evaluating its argument. The optional _filename_
|
|
* and _lineno_ parameters set the text for error messages.
|
|
*
|
|
* class Thing
|
|
* end
|
|
* a = %q{def hello() "Hello there!" end}
|
|
* Thing.module_eval(a)
|
|
* puts Thing.new.hello()
|
|
* Thing.module_eval("invalid code", "dummy", 123)
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* Hello there!
|
|
* dummy:123:in `module_eval': undefined local variable
|
|
* or method `code' for Thing:Class
|
|
*/
|
|
|
|
VALUE
|
|
rb_mod_module_eval(int argc, VALUE *argv, VALUE mod)
|
|
{
|
|
return specific_eval(argc, argv, mod, mod);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* mod.module_exec(arg...) {|var...| block } => obj
|
|
* mod.class_exec(arg...) {|var...| block } => obj
|
|
*
|
|
* Evaluates the given block in the context of the class/module.
|
|
* The method defined in the block will belong to the receiver.
|
|
*
|
|
* class Thing
|
|
* end
|
|
* Thing.class_exec{
|
|
* def hello() "Hello there!" end
|
|
* }
|
|
* puts Thing.new.hello()
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* Hello there!
|
|
*/
|
|
|
|
VALUE
|
|
rb_mod_module_exec(int argc, VALUE *argv, VALUE mod)
|
|
{
|
|
return yield_under(mod, mod, rb_ary_new4(argc, argv));
|
|
}
|
|
|
|
VALUE rb_load_path;
|
|
|
|
NORETURN(static void load_failed(VALUE));
|
|
|
|
void
|
|
rb_load(VALUE fname, int wrap)
|
|
{
|
|
VALUE tmp;
|
|
int state;
|
|
volatile int prohibit_int = rb_prohibit_interrupt;
|
|
volatile ID callee, this_func;
|
|
volatile VALUE wrapper = ruby_wrapper;
|
|
volatile VALUE self = ruby_top_self;
|
|
NODE * volatile last_node;
|
|
NODE *saved_cref = ruby_cref;
|
|
TMP_PROTECT;
|
|
|
|
if (!wrap) rb_secure(4);
|
|
FilePathValue(fname);
|
|
fname = rb_str_new4(fname);
|
|
tmp = rb_find_file(fname);
|
|
if (!tmp) {
|
|
load_failed(fname);
|
|
}
|
|
fname = tmp;
|
|
|
|
ruby_errinfo = Qnil; /* ensure */
|
|
PUSH_VARS();
|
|
ruby_cref = top_cref;
|
|
if (!wrap) {
|
|
rb_secure(4); /* should alter global state */
|
|
ruby_wrapper = 0;
|
|
}
|
|
else {
|
|
/* load in anonymous module as toplevel */
|
|
ruby_wrapper = rb_module_new();
|
|
self = rb_obj_clone(ruby_top_self);
|
|
rb_extend_object(self, ruby_wrapper);
|
|
PUSH_CREF(ruby_wrapper);
|
|
/* default visibility is private at loading toplevel */
|
|
VIS_SET(VIS_PRIVATE);
|
|
}
|
|
PUSH_FRAME(Qfalse);
|
|
ruby_frame->self = self;
|
|
PUSH_SCOPE();
|
|
PUSH_TAG(PROT_NONE);
|
|
/* default visibility is private at loading toplevel */
|
|
VIS_SET(VIS_PRIVATE);
|
|
state = EXEC_TAG();
|
|
callee = ruby_frame->callee;
|
|
this_func = ruby_frame->this_func;
|
|
last_node = ruby_current_node;
|
|
if (!ruby_current_node && ruby_sourcefile) {
|
|
last_node = NEW_BEGIN(0);
|
|
}
|
|
ruby_current_node = 0;
|
|
if (state == 0) {
|
|
NODE * volatile node;
|
|
volatile int critical;
|
|
|
|
DEFER_INTS;
|
|
ruby_in_eval++;
|
|
critical = rb_thread_critical;
|
|
rb_thread_critical = Qtrue;
|
|
rb_load_file(RSTRING(fname)->ptr);
|
|
ruby_in_eval--;
|
|
node = ruby_eval_tree;
|
|
rb_thread_critical = critical;
|
|
ALLOW_INTS;
|
|
if (ruby_nerrs == 0) {
|
|
eval_node(self, node);
|
|
}
|
|
}
|
|
ruby_frame->callee = callee;
|
|
ruby_frame->this_func = this_func;
|
|
ruby_current_node = last_node;
|
|
ruby_sourcefile = 0;
|
|
ruby_set_current_source();
|
|
if (ruby_scope->flags == SCOPE_ALLOCA && ruby_cbase == rb_cObject) {
|
|
if (ruby_scope->local_tbl) /* toplevel was empty */
|
|
free(ruby_scope->local_tbl);
|
|
}
|
|
POP_TAG();
|
|
rb_prohibit_interrupt = prohibit_int;
|
|
ruby_cref = saved_cref;
|
|
POP_SCOPE();
|
|
POP_FRAME();
|
|
POP_VARS();
|
|
ruby_wrapper = wrapper;
|
|
if (ruby_nerrs > 0) {
|
|
ruby_nerrs = 0;
|
|
rb_exc_raise(ruby_errinfo);
|
|
}
|
|
if (state) jump_tag_but_local_jump(state, Qundef);
|
|
if (!NIL_P(ruby_errinfo)) /* exception during load */
|
|
rb_exc_raise(ruby_errinfo);
|
|
}
|
|
|
|
void
|
|
rb_load_protect(VALUE fname, int wrap, int *state)
|
|
{
|
|
int status;
|
|
|
|
PUSH_THREAD_TAG();
|
|
if ((status = EXEC_TAG()) == 0) {
|
|
rb_load(fname, wrap);
|
|
}
|
|
else if (status == TAG_THREAD) {
|
|
rb_thread_start_1();
|
|
}
|
|
POP_THREAD_TAG();
|
|
if (state) *state = status;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* load(filename, wrap=false) => true
|
|
*
|
|
* Loads and executes the Ruby
|
|
* program in the file _filename_. If the filename does not
|
|
* resolve to an absolute path, the file is searched for in the library
|
|
* directories listed in <code>$:</code>. If the optional _wrap_
|
|
* parameter is +true+, the loaded script will be executed
|
|
* under an anonymous module, protecting the calling program's global
|
|
* namespace. In no circumstance will any local variables in the loaded
|
|
* file be propagated to the loading environment.
|
|
*/
|
|
|
|
|
|
static VALUE
|
|
rb_f_load(int argc, VALUE *argv)
|
|
{
|
|
VALUE fname, wrap;
|
|
|
|
rb_scan_args(argc, argv, "11", &fname, &wrap);
|
|
rb_load(fname, RTEST(wrap));
|
|
return Qtrue;
|
|
}
|
|
|
|
VALUE ruby_dln_librefs;
|
|
static VALUE rb_features;
|
|
static st_table *loading_tbl;
|
|
|
|
#define IS_SOEXT(e) (strcmp(e, ".so") == 0 || strcmp(e, ".o") == 0)
|
|
#ifdef DLEXT2
|
|
#define IS_DLEXT(e) (strcmp(e, DLEXT) == 0 || strcmp(e, DLEXT2) == 0)
|
|
#else
|
|
#define IS_DLEXT(e) (strcmp(e, DLEXT) == 0)
|
|
#endif
|
|
|
|
static int
|
|
rb_feature_p(const char *feature, const char *ext, int rb)
|
|
{
|
|
VALUE v;
|
|
char *f, *e;
|
|
long i, len, elen;
|
|
|
|
if (ext) {
|
|
len = ext - feature;
|
|
elen = strlen(ext);
|
|
}
|
|
else {
|
|
len = strlen(feature);
|
|
elen = 0;
|
|
}
|
|
for (i = 0; i < RARRAY(rb_features)->len; ++i) {
|
|
v = RARRAY(rb_features)->ptr[i];
|
|
f = StringValuePtr(v);
|
|
if (strncmp(f, feature, len) != 0) continue;
|
|
if (!*(e = f + len)) {
|
|
if (ext) continue;
|
|
return 'u';
|
|
}
|
|
if (*e != '.') continue;
|
|
if ((!rb || !ext) && (IS_SOEXT(e) || IS_DLEXT(e))) {
|
|
return 's';
|
|
}
|
|
if ((rb || !ext) && (strcmp(e, ".rb") == 0)) {
|
|
return 'r';
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static const char *const loadable_ext[] = {
|
|
".rb", DLEXT,
|
|
#ifdef DLEXT2
|
|
DLEXT2,
|
|
#endif
|
|
0
|
|
};
|
|
|
|
static int search_required(VALUE, VALUE *);
|
|
|
|
int
|
|
rb_provided(const char *feature)
|
|
{
|
|
int i;
|
|
char *buf;
|
|
VALUE fname;
|
|
|
|
if (rb_feature_p(feature, 0, Qfalse))
|
|
return Qtrue;
|
|
if (loading_tbl) {
|
|
if (st_lookup(loading_tbl, (st_data_t)feature, 0)) return Qtrue;
|
|
buf = ALLOCA_N(char, strlen(feature)+8);
|
|
strcpy(buf, feature);
|
|
for (i=0; loadable_ext[i]; i++) {
|
|
strcpy(buf+strlen(feature), loadable_ext[i]);
|
|
if (st_lookup(loading_tbl, (st_data_t)buf, 0)) return Qtrue;
|
|
}
|
|
}
|
|
if (search_required(rb_str_new2(feature), &fname)) {
|
|
feature = RSTRING(fname)->ptr;
|
|
if (rb_feature_p(feature, 0, Qfalse))
|
|
return Qtrue;
|
|
if (loading_tbl && st_lookup(loading_tbl, (st_data_t)feature, 0))
|
|
return Qtrue;
|
|
}
|
|
return Qfalse;
|
|
}
|
|
|
|
static void
|
|
rb_provide_feature(VALUE feature)
|
|
{
|
|
rb_ary_push(rb_features, feature);
|
|
}
|
|
|
|
void
|
|
rb_provide(const char *feature)
|
|
{
|
|
rb_provide_feature(rb_str_new2(feature));
|
|
}
|
|
|
|
static int
|
|
load_wait(char *ftptr)
|
|
{
|
|
st_data_t th;
|
|
|
|
if (!loading_tbl) return Qfalse;
|
|
if (!st_lookup(loading_tbl, (st_data_t)ftptr, &th)) return Qfalse;
|
|
do {
|
|
if ((rb_thread_t)th == curr_thread) return Qtrue;
|
|
CHECK_INTS;
|
|
} while (st_lookup(loading_tbl, (st_data_t)ftptr, &th));
|
|
return Qtrue;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* require(string) => true or false
|
|
*
|
|
* Ruby tries to load the library named _string_, returning
|
|
* +true+ if successful. If the filename does not resolve to
|
|
* an absolute path, it will be searched for in the directories listed
|
|
* in <code>$:</code>. If the file has the extension ``.rb'', it is
|
|
* loaded as a source file; if the extension is ``.so'', ``.o'', or
|
|
* ``.dll'', or whatever the default shared library extension is on
|
|
* the current platform, Ruby loads the shared library as a Ruby
|
|
* extension. Otherwise, Ruby tries adding ``.rb'', ``.so'', and so on
|
|
* to the name. The name of the loaded feature is added to the array in
|
|
* <code>$"</code>. A feature will not be loaded if it's name already
|
|
* appears in <code>$"</code>. However, the file name is not converted
|
|
* to an absolute path, so that ``<code>require 'a';require
|
|
* './a'</code>'' will load <code>a.rb</code> twice.
|
|
*
|
|
* require "my-library.rb"
|
|
* require "db-driver"
|
|
*/
|
|
|
|
VALUE
|
|
rb_f_require(VALUE obj, VALUE fname)
|
|
{
|
|
return rb_require_safe(fname, ruby_safe_level);
|
|
}
|
|
|
|
static int
|
|
search_required(VALUE fname, VALUE *path)
|
|
{
|
|
VALUE tmp;
|
|
char *ext, *ftptr;
|
|
int type, ft = 0;
|
|
|
|
*path = 0;
|
|
ext = strrchr(ftptr = RSTRING(fname)->ptr, '.');
|
|
if (ext && !strchr(ext, '/')) {
|
|
if (strcmp(".rb", ext) == 0) {
|
|
if (rb_feature_p(ftptr, ext, Qtrue)) return 'r';
|
|
if (tmp = rb_find_file(fname)) {
|
|
tmp = rb_file_expand_path(tmp, Qnil);
|
|
ext = strrchr(ftptr = RSTRING(tmp)->ptr, '.');
|
|
if (!rb_feature_p(ftptr, ext, Qtrue))
|
|
*path = tmp;
|
|
return 'r';
|
|
}
|
|
return 0;
|
|
}
|
|
else if (IS_SOEXT(ext)) {
|
|
if (rb_feature_p(ftptr, ext, Qfalse)) return 's';
|
|
tmp = rb_str_new(RSTRING(fname)->ptr, ext-RSTRING(fname)->ptr);
|
|
#ifdef DLEXT2
|
|
OBJ_FREEZE(tmp);
|
|
if (rb_find_file_ext(&tmp, loadable_ext+1)) {
|
|
tmp = rb_file_expand_path(tmp, Qnil);
|
|
ext = strrchr(ftptr = RSTRING(tmp)->ptr, '.');
|
|
if (!rb_feature_p(ftptr, ext, Qfalse))
|
|
*path = tmp;
|
|
return 's';
|
|
}
|
|
#else
|
|
rb_str_cat2(tmp, DLEXT);
|
|
OBJ_FREEZE(tmp);
|
|
if (tmp = rb_find_file(tmp)) {
|
|
tmp = rb_file_expand_path(tmp, Qnil);
|
|
ext = strrchr(ftptr = RSTRING(tmp)->ptr, '.');
|
|
if (!rb_feature_p(ftptr, ext, Qfalse))
|
|
*path = tmp;
|
|
return 's';
|
|
}
|
|
#endif
|
|
}
|
|
else if (IS_DLEXT(ext)) {
|
|
if (rb_feature_p(ftptr, ext, Qfalse)) return 's';
|
|
if (tmp = rb_find_file(fname)) {
|
|
tmp = rb_file_expand_path(tmp, Qnil);
|
|
ext = strrchr(ftptr = RSTRING(tmp)->ptr, '.');
|
|
if (!rb_feature_p(ftptr, ext, Qfalse))
|
|
*path = tmp;
|
|
return 's';
|
|
}
|
|
}
|
|
}
|
|
else if ((ft = rb_feature_p(ftptr, 0, Qfalse)) == 'r') {
|
|
return 'r';
|
|
}
|
|
tmp = fname;
|
|
type = rb_find_file_ext(&tmp, loadable_ext);
|
|
tmp = rb_file_expand_path(tmp, Qnil);
|
|
switch (type) {
|
|
case 0:
|
|
ftptr = RSTRING(tmp)->ptr;
|
|
if (ft) break;
|
|
return rb_feature_p(ftptr, 0, Qfalse);
|
|
|
|
default:
|
|
if (ft) break;
|
|
case 1:
|
|
ext = strrchr(ftptr = RSTRING(tmp)->ptr, '.');
|
|
if (rb_feature_p(ftptr, ext, !--type)) break;
|
|
*path = tmp;
|
|
}
|
|
return type ? 's' : 'r';
|
|
}
|
|
|
|
static void
|
|
load_failed(VALUE fname)
|
|
{
|
|
rb_raise(rb_eLoadError, "no such file to load -- %s", RSTRING(fname)->ptr);
|
|
}
|
|
|
|
VALUE
|
|
rb_require_safe(VALUE fname, int safe)
|
|
{
|
|
VALUE result = Qnil;
|
|
volatile VALUE errinfo = ruby_errinfo;
|
|
int state;
|
|
struct {
|
|
NODE *node;
|
|
ID this_func, callee;
|
|
int safe, vmode;
|
|
} volatile saved;
|
|
char *volatile ftptr = 0;
|
|
|
|
saved.node = ruby_current_node;
|
|
saved.callee = ruby_frame->callee;
|
|
saved.this_func = ruby_frame->this_func;
|
|
saved.safe = ruby_safe_level;
|
|
saved.vmode = vis_mode;
|
|
PUSH_SCOPE();
|
|
PUSH_CREF(ruby_cbase);
|
|
VIS_SET(VIS_PUBLIC);
|
|
PUSH_TAG(PROT_NONE);
|
|
if ((state = EXEC_TAG()) == 0) {
|
|
VALUE path;
|
|
long handle;
|
|
int found;
|
|
|
|
ruby_safe_level = safe;
|
|
FilePathValue(fname);
|
|
*(volatile VALUE *)&fname = rb_str_new4(fname);
|
|
found = search_required(fname, &path);
|
|
if (found) {
|
|
if (!path || load_wait(RSTRING(path)->ptr)) {
|
|
result = Qfalse;
|
|
}
|
|
else {
|
|
ruby_safe_level = 0;
|
|
switch (found) {
|
|
case 'r':
|
|
/* loading ruby library should be serialized. */
|
|
if (!loading_tbl) {
|
|
loading_tbl = st_init_strtable();
|
|
}
|
|
/* partial state */
|
|
ftptr = ruby_strdup(RSTRING(path)->ptr);
|
|
st_insert(loading_tbl, (st_data_t)ftptr, (st_data_t)curr_thread);
|
|
rb_load(path, 0);
|
|
break;
|
|
|
|
case 's':
|
|
ruby_current_node = 0;
|
|
ruby_sourcefile = rb_source_filename(RSTRING(path)->ptr);
|
|
ruby_sourceline = 0;
|
|
ruby_frame->callee = 0;
|
|
ruby_frame->this_func = 0;
|
|
VIS_SET(VIS_PUBLIC);
|
|
handle = (long)dln_load(RSTRING(path)->ptr);
|
|
rb_ary_push(ruby_dln_librefs, LONG2NUM(handle));
|
|
break;
|
|
}
|
|
rb_provide_feature(path);
|
|
result = Qtrue;
|
|
}
|
|
}
|
|
}
|
|
POP_TAG();
|
|
ruby_current_node = saved.node;
|
|
ruby_set_current_source();
|
|
ruby_frame->this_func = saved.this_func;
|
|
ruby_frame->callee = saved.callee;
|
|
ruby_safe_level = saved.safe;
|
|
VIS_SET(saved.vmode);
|
|
POP_CREF();
|
|
POP_SCOPE();
|
|
if (ftptr) {
|
|
if (st_delete(loading_tbl, (st_data_t *)&ftptr, 0)) { /* loading done */
|
|
free(ftptr);
|
|
}
|
|
}
|
|
if (state) JUMP_TAG(state);
|
|
if (NIL_P(result)) {
|
|
load_failed(fname);
|
|
}
|
|
ruby_errinfo = errinfo;
|
|
|
|
return result;
|
|
}
|
|
|
|
VALUE
|
|
rb_require(const char *fname)
|
|
{
|
|
VALUE fn = rb_str_new2(fname);
|
|
OBJ_FREEZE(fn);
|
|
return rb_require_safe(fn, ruby_safe_level);
|
|
}
|
|
|
|
static void
|
|
secure_visibility(VALUE self)
|
|
{
|
|
if (ruby_safe_level >= 4 && !OBJ_TAINTED(self)) {
|
|
rb_raise(rb_eSecurityError, "Insecure: can't change method visibility");
|
|
}
|
|
}
|
|
|
|
static void
|
|
set_method_visibility(VALUE self, int argc, VALUE *argv, ID ex)
|
|
{
|
|
int i;
|
|
|
|
secure_visibility(self);
|
|
for (i=0; i<argc; i++) {
|
|
rb_export_method(self, rb_to_id(argv[i]), ex);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* public => self
|
|
* public(symbol, ...) => self
|
|
*
|
|
* With no arguments, sets the default visibility for subsequently
|
|
* defined methods to public. With arguments, sets the named methods to
|
|
* have public visibility.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_public(int argc, VALUE *argv, VALUE module)
|
|
{
|
|
secure_visibility(module);
|
|
if (argc == 0) {
|
|
VIS_SET(VIS_PUBLIC);
|
|
}
|
|
else {
|
|
set_method_visibility(module, argc, argv, NOEX_PUBLIC);
|
|
}
|
|
return module;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* protected => self
|
|
* protected(symbol, ...) => self
|
|
*
|
|
* With no arguments, sets the default visibility for subsequently
|
|
* defined methods to protected. With arguments, sets the named methods
|
|
* to have protected visibility.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_protected(int argc, VALUE *argv, VALUE module)
|
|
{
|
|
secure_visibility(module);
|
|
if (argc == 0) {
|
|
VIS_SET(VIS_PROTECTED);
|
|
}
|
|
else {
|
|
set_method_visibility(module, argc, argv, NOEX_PROTECTED);
|
|
}
|
|
return module;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* private => self
|
|
* private(symbol, ...) => self
|
|
*
|
|
* With no arguments, sets the default visibility for subsequently
|
|
* defined methods to private. With arguments, sets the named methods
|
|
* to have private visibility.
|
|
*
|
|
* module Mod
|
|
* def a() end
|
|
* def b() end
|
|
* private
|
|
* def c() end
|
|
* private :a
|
|
* end
|
|
* Mod.private_instance_methods #=> ["a", "c"]
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_private(int argc, VALUE *argv, VALUE module)
|
|
{
|
|
secure_visibility(module);
|
|
if (argc == 0) {
|
|
VIS_SET(VIS_PRIVATE);
|
|
}
|
|
else {
|
|
set_method_visibility(module, argc, argv, NOEX_PRIVATE);
|
|
}
|
|
return module;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* local => self
|
|
* local(symbol, ...) => self
|
|
*
|
|
* With no arguments, sets the default visibility for subsequently
|
|
* defined methods to local. With arguments, sets the named methods to
|
|
* have local visibility.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_local(int argc, VALUE *argv, VALUE module)
|
|
{
|
|
secure_visibility(module);
|
|
if (argc == 0) {
|
|
VIS_SET(VIS_LOCAL);
|
|
}
|
|
else {
|
|
set_method_visibility(module, argc, argv, NOEX_LOCAL);
|
|
rb_clear_cache();
|
|
}
|
|
return module;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* mod.public_class_method(symbol, ...) => mod
|
|
*
|
|
* Makes a list of existing class methods public.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_public_method(int argc, VALUE *argv, VALUE obj)
|
|
{
|
|
set_method_visibility(CLASS_OF(obj), argc, argv, NOEX_PUBLIC);
|
|
return obj;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* mod.private_class_method(symbol, ...) => mod
|
|
*
|
|
* Makes existing class methods private. Often used to hide the default
|
|
* constructor <code>new</code>.
|
|
*
|
|
* class SimpleSingleton # Not thread safe
|
|
* private_class_method :new
|
|
* def SimpleSingleton.create(*args, &block)
|
|
* @me = new(*args, &block) if ! @me
|
|
* @me
|
|
* end
|
|
* end
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_private_method(int argc, VALUE *argv, VALUE obj)
|
|
{
|
|
set_method_visibility(CLASS_OF(obj), argc, argv, NOEX_PRIVATE);
|
|
return obj;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* public
|
|
* public(symbol, ...)
|
|
*
|
|
* With no arguments, sets the default visibility for subsequently
|
|
* defined methods to public. With arguments, sets the named methods to
|
|
* have public visibility.
|
|
*/
|
|
|
|
static VALUE
|
|
top_public(int argc, VALUE *argv)
|
|
{
|
|
return rb_mod_public(argc, argv, rb_cObject);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* private => self
|
|
* private(symbol, ...) => self
|
|
*
|
|
* With no arguments, sets the default visibility for subsequently
|
|
* defined methods to private. With arguments, sets the named methods
|
|
* to have private visibility.
|
|
*/
|
|
|
|
static VALUE
|
|
top_private(int argc, VALUE *argv)
|
|
{
|
|
return rb_mod_private(argc, argv, rb_cObject);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* module_function(symbol, ...) => self
|
|
*
|
|
* Creates module functions for the named methods. These functions may
|
|
* be called with the module as a receiver, and also become available
|
|
* as instance methods to classes that mix in the module. Module
|
|
* functions are copies of the original, and so may be changed
|
|
* independently. The instance-method versions are made private. If
|
|
* used with no arguments, subsequently defined methods become module
|
|
* functions.
|
|
*
|
|
* module Mod
|
|
* def one
|
|
* "This is one"
|
|
* end
|
|
* module_function :one
|
|
* end
|
|
* class Cls
|
|
* include Mod
|
|
* def callOne
|
|
* one
|
|
* end
|
|
* end
|
|
* Mod.one #=> "This is one"
|
|
* c = Cls.new
|
|
* c.callOne #=> "This is one"
|
|
* module Mod
|
|
* def one
|
|
* "This is the new one"
|
|
* end
|
|
* end
|
|
* Mod.one #=> "This is one"
|
|
* c.callOne #=> "This is the new one"
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_modfunc(int argc, VALUE *argv, VALUE module)
|
|
{
|
|
int i;
|
|
ID id;
|
|
NODE *body;
|
|
|
|
if (TYPE(module) != T_MODULE) {
|
|
rb_raise(rb_eTypeError, "module_function must be called for modules");
|
|
}
|
|
|
|
secure_visibility(module);
|
|
if (argc == 0) {
|
|
VIS_SET(VIS_MODFUNC);
|
|
return module;
|
|
}
|
|
|
|
set_method_visibility(module, argc, argv, NOEX_PRIVATE);
|
|
for (i=0; i<argc; i++) {
|
|
VALUE m = module;
|
|
|
|
id = rb_to_id(argv[i]);
|
|
for (;;) {
|
|
body = search_method(m, id, &m, LOOKUP_NOSKIP, 0);
|
|
if (body == 0) {
|
|
body = search_method(rb_cObject, id, &m, LOOKUP_NOSKIP, 0);
|
|
}
|
|
if (body == 0 || body->nd_body == 0) {
|
|
rb_bug("undefined method `%s'; can't happen", rb_id2name(id));
|
|
}
|
|
if (nd_type(body->nd_body) != NODE_ZSUPER) {
|
|
break; /* normal case: need not to follow 'super' link */
|
|
}
|
|
m = RCLASS(m)->super;
|
|
if (!m) break;
|
|
}
|
|
rb_add_method(rb_singleton_class(module), id, body->nd_body, NOEX_PUBLIC);
|
|
}
|
|
return module;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* append_features(mod) => mod
|
|
*
|
|
* When this module is included in another, Ruby calls
|
|
* <code>append_features</code> in this module, passing it the
|
|
* receiving module in _mod_. Ruby's default implementation is
|
|
* to add the constants, methods, and module variables of this module
|
|
* to _mod_ if this module has not already been added to
|
|
* _mod_ or one of its ancestors. See also <code>Module#include</code>.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_append_features(VALUE module, VALUE dest)
|
|
{
|
|
switch (TYPE(dest)) {
|
|
case T_CLASS:
|
|
case T_MODULE:
|
|
break;
|
|
default:
|
|
Check_Type(dest, T_CLASS);
|
|
break;
|
|
}
|
|
rb_include_module(dest, module);
|
|
|
|
return module;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* include(module, ...) => self
|
|
*
|
|
* Invokes <code>Module.append_features</code> on each parameter in turn.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_include(int argc, VALUE *argv, VALUE module)
|
|
{
|
|
int i;
|
|
|
|
for (i=0; i<argc; i++) Check_Type(argv[i], T_MODULE);
|
|
while (argc--) {
|
|
rb_funcall(argv[argc], rb_intern("append_features"), 1, module);
|
|
rb_funcall(argv[argc], rb_intern("included"), 1, module);
|
|
}
|
|
return module;
|
|
}
|
|
|
|
void
|
|
rb_obj_call_init(VALUE obj, int argc, VALUE *argv)
|
|
{
|
|
rb_call(CLASS_OF(obj), obj, init, argc, argv, ruby_frame->block, CALLING_FUNCALL, 1);
|
|
}
|
|
|
|
void
|
|
rb_extend_object(VALUE obj, VALUE module)
|
|
{
|
|
rb_include_module(rb_singleton_class(obj), module);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* extend_object(obj) => obj
|
|
*
|
|
* Extends the specified object by adding this module's constants and
|
|
* methods (which are added as singleton methods). This is the callback
|
|
* method used by <code>Object#extend</code>.
|
|
*
|
|
* module Picky
|
|
* def Picky.extend_object(o)
|
|
* if String === o
|
|
* puts "Can't add Picky to a String"
|
|
* else
|
|
* puts "Picky added to #{o.class}"
|
|
* super
|
|
* end
|
|
* end
|
|
* end
|
|
* (s = Array.new).extend Picky # Call Object.extend
|
|
* (s = "quick brown fox").extend Picky
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* Picky added to Array
|
|
* Can't add Picky to a String
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_extend_object(VALUE mod, VALUE obj)
|
|
{
|
|
rb_extend_object(obj, mod);
|
|
return obj;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* obj.extend(module, ...) => obj
|
|
*
|
|
* Adds to _obj_ the instance methods from each module given as a
|
|
* parameter.
|
|
*
|
|
* module Mod
|
|
* def hello
|
|
* "Hello from Mod.\n"
|
|
* end
|
|
* end
|
|
*
|
|
* class Klass
|
|
* def hello
|
|
* "Hello from Klass.\n"
|
|
* end
|
|
* end
|
|
*
|
|
* k = Klass.new
|
|
* k.hello #=> "Hello from Klass.\n"
|
|
* k.extend(Mod) #=> #<Klass:0x401b3bc8>
|
|
* k.hello #=> "Hello from Mod.\n"
|
|
*/
|
|
|
|
static VALUE
|
|
rb_obj_extend(int argc, VALUE *argv, VALUE obj)
|
|
{
|
|
int i;
|
|
|
|
if (argc == 0) {
|
|
rb_raise(rb_eArgError, "wrong number of arguments (0 for 1)");
|
|
}
|
|
for (i=0; i<argc; i++) Check_Type(argv[i], T_MODULE);
|
|
while (argc--) {
|
|
rb_funcall(argv[argc], rb_intern("extend_object"), 1, obj);
|
|
rb_funcall(argv[argc], rb_intern("extended"), 1, obj);
|
|
}
|
|
return obj;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* include(module, ...) => self
|
|
*
|
|
* Invokes <code>Module.append_features</code>
|
|
* on each parameter in turn. Effectively adds the methods and constants
|
|
* in each module to the receiver.
|
|
*/
|
|
|
|
static VALUE
|
|
top_include(int argc, VALUE *argv, VALUE self)
|
|
{
|
|
rb_secure(4);
|
|
if (ruby_wrapper) {
|
|
rb_warning("main#include in the wrapped load is effective only in wrapper module");
|
|
return rb_mod_include(argc, argv, ruby_wrapper);
|
|
}
|
|
return rb_mod_include(argc, argv, rb_cObject);
|
|
}
|
|
|
|
VALUE rb_f_trace_var(int, VALUE *);
|
|
VALUE rb_f_untrace_var(int, VALUE *);
|
|
|
|
static void
|
|
errinfo_setter(VALUE val, ID id, VALUE *var)
|
|
{
|
|
if (!NIL_P(val) && !rb_obj_is_kind_of(val, rb_eException)) {
|
|
rb_raise(rb_eTypeError, "assigning non-exception to $!");
|
|
}
|
|
*var = val;
|
|
}
|
|
|
|
static VALUE
|
|
errat_getter(ID id)
|
|
{
|
|
return get_backtrace(ruby_errinfo);
|
|
}
|
|
|
|
static void
|
|
errat_setter(VALUE val, ID id, VALUE *var)
|
|
{
|
|
if (NIL_P(ruby_errinfo)) {
|
|
rb_raise(rb_eArgError, "$! not set");
|
|
}
|
|
set_backtrace(ruby_errinfo, val);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* local_variables => array
|
|
*
|
|
* Returns the names of the current local variables.
|
|
*
|
|
* fred = 1
|
|
* for i in 1..10
|
|
* # ...
|
|
* end
|
|
* local_variables #=> ["fred", "i"]
|
|
*/
|
|
|
|
static VALUE
|
|
rb_f_local_variables(void)
|
|
{
|
|
ID *tbl;
|
|
int n, i;
|
|
VALUE ary = rb_ary_new();
|
|
struct RVarmap *vars;
|
|
|
|
tbl = ruby_scope->local_tbl;
|
|
if (tbl) {
|
|
n = *tbl++;
|
|
for (i=2; i<n; i++) { /* skip first 2 ($_ and $~) */
|
|
if (!rb_is_local_id(tbl[i])) continue; /* skip flip states */
|
|
rb_ary_push(ary, rb_str_new2(rb_id2name(tbl[i])));
|
|
}
|
|
}
|
|
|
|
vars = ruby_dyna_vars;
|
|
while (vars) {
|
|
if (vars->id && rb_is_local_id(vars->id)) { /* skip $_, $~ and flip states */
|
|
rb_ary_push(ary, rb_str_new2(rb_id2name(vars->id)));
|
|
}
|
|
vars = vars->next;
|
|
}
|
|
|
|
return ary;
|
|
}
|
|
|
|
static VALUE rb_f_catch(VALUE,VALUE);
|
|
NORETURN(static VALUE rb_f_throw(int,VALUE*));
|
|
|
|
struct end_proc_data {
|
|
void (*func)();
|
|
VALUE data;
|
|
int safe;
|
|
struct end_proc_data *next;
|
|
};
|
|
|
|
static struct end_proc_data *end_procs, *ephemeral_end_procs, *tmp_end_procs;
|
|
|
|
void
|
|
rb_set_end_proc(void (*func) (VALUE), VALUE data)
|
|
{
|
|
struct end_proc_data *link = ALLOC(struct end_proc_data);
|
|
struct end_proc_data **list;
|
|
|
|
if (ruby_wrapper) list = &ephemeral_end_procs;
|
|
else list = &end_procs;
|
|
link->next = *list;
|
|
link->func = func;
|
|
link->data = data;
|
|
link->safe = ruby_safe_level;
|
|
*list = link;
|
|
}
|
|
|
|
void
|
|
rb_mark_end_proc(void)
|
|
{
|
|
struct end_proc_data *link;
|
|
|
|
link = end_procs;
|
|
while (link) {
|
|
rb_gc_mark(link->data);
|
|
link = link->next;
|
|
}
|
|
link = ephemeral_end_procs;
|
|
while (link) {
|
|
rb_gc_mark(link->data);
|
|
link = link->next;
|
|
}
|
|
link = tmp_end_procs;
|
|
while (link) {
|
|
rb_gc_mark(link->data);
|
|
link = link->next;
|
|
}
|
|
}
|
|
|
|
static void
|
|
call_end_proc(VALUE data)
|
|
{
|
|
PUSH_FRAME(Qfalse);
|
|
ruby_frame->self = ruby_frame->prev->self;
|
|
ruby_frame->node = 0;
|
|
proc_invoke(data, rb_ary_new2(0), Qundef, 0, 1);
|
|
POP_FRAME();
|
|
}
|
|
|
|
static void
|
|
rb_f_END(void)
|
|
{
|
|
PUSH_FRAME(Qfalse);
|
|
rb_set_end_proc(call_end_proc, rb_block_proc());
|
|
POP_FRAME();
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* at_exit { block } -> proc
|
|
*
|
|
* Converts _block_ to a +Proc+ object (and therefore
|
|
* binds it at the point of call) and registers it for execution when
|
|
* the program exits. If multiple handlers are registered, they are
|
|
* executed in reverse order of registration.
|
|
*
|
|
* def do_at_exit(str1)
|
|
* at_exit { print str1 }
|
|
* end
|
|
* at_exit { puts "cruel world" }
|
|
* do_at_exit("goodbye ")
|
|
* exit
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* goodbye cruel world
|
|
*/
|
|
|
|
static VALUE
|
|
rb_f_at_exit(void)
|
|
{
|
|
VALUE proc;
|
|
|
|
if (!rb_block_given_p()) {
|
|
rb_raise(rb_eArgError, "called without a block");
|
|
}
|
|
proc = rb_block_proc();
|
|
rb_set_end_proc(call_end_proc, proc);
|
|
return proc;
|
|
}
|
|
|
|
void
|
|
rb_exec_end_proc(void)
|
|
{
|
|
struct end_proc_data *link, *tmp;
|
|
int status;
|
|
volatile int safe = ruby_safe_level;
|
|
|
|
while (ephemeral_end_procs) {
|
|
tmp_end_procs = link = ephemeral_end_procs;
|
|
ephemeral_end_procs = 0;
|
|
while (link) {
|
|
PUSH_TAG(PROT_NONE);
|
|
if ((status = EXEC_TAG()) == 0) {
|
|
ruby_safe_level = link->safe;
|
|
(*link->func)(link->data);
|
|
}
|
|
POP_TAG();
|
|
if (status) {
|
|
error_handle(status);
|
|
}
|
|
tmp = link;
|
|
tmp_end_procs = link = link->next;
|
|
free(tmp);
|
|
}
|
|
}
|
|
while (end_procs) {
|
|
tmp_end_procs = link = end_procs;
|
|
end_procs = 0;
|
|
while (link) {
|
|
PUSH_TAG(PROT_NONE);
|
|
if ((status = EXEC_TAG()) == 0) {
|
|
ruby_safe_level = link->safe;
|
|
(*link->func)(link->data);
|
|
}
|
|
POP_TAG();
|
|
if (status) {
|
|
error_handle(status);
|
|
}
|
|
tmp = link;
|
|
tmp_end_procs = link = link->next;
|
|
free(tmp);
|
|
}
|
|
}
|
|
ruby_safe_level = safe;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* __method__ => symbol
|
|
*
|
|
* Returns the name of the current method as a Symbol.
|
|
* If called from inside of an aliased method it will return the original
|
|
* nonaliased name.
|
|
* If called outside of a method, it returns <code>nil</code>.
|
|
*
|
|
* def foo
|
|
* __method__
|
|
* end
|
|
* alias bar foo
|
|
*
|
|
* foo # => :foo
|
|
* bar # => :foo
|
|
*
|
|
* See also <code>\_\_callee__</code>.
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
rb_f_method_name(void)
|
|
{
|
|
struct FRAME* prev = ruby_frame->prev;
|
|
if (prev && prev->this_func) {
|
|
return ID2SYM(prev->this_func);
|
|
}
|
|
else {
|
|
return Qnil;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* __callee__ => symbol
|
|
*
|
|
* Returns the name of the current method as Symbol.
|
|
* If called from inside of an aliased method it will return the aliased
|
|
* name.
|
|
* If called outside of a method, it returns <code>nil</code>.
|
|
*
|
|
* def foo
|
|
* __callee__
|
|
* end
|
|
* alias bar foo
|
|
*
|
|
* foo # => :foo
|
|
* bar # => :bar
|
|
*
|
|
* See also <code>\_\_method__</code>.
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
rb_f_callee_name(void)
|
|
{
|
|
struct FRAME* prev = ruby_frame->prev;
|
|
if (prev && prev->callee) {
|
|
return ID2SYM(prev->callee);
|
|
}
|
|
else {
|
|
return Qnil;
|
|
}
|
|
}
|
|
|
|
void
|
|
Init_eval(void)
|
|
{
|
|
init = rb_intern("initialize");
|
|
eqq = rb_intern("===");
|
|
each = rb_intern("each");
|
|
|
|
aref = rb_intern("[]");
|
|
aset = rb_intern("[]=");
|
|
match = rb_intern("=~");
|
|
missing = rb_intern("method_missing");
|
|
added = rb_intern("method_added");
|
|
singleton_added = rb_intern("singleton_method_added");
|
|
removed = rb_intern("method_removed");
|
|
singleton_removed = rb_intern("singleton_method_removed");
|
|
undefined = rb_intern("method_undefined");
|
|
singleton_undefined = rb_intern("singleton_method_undefined");
|
|
|
|
object_id = rb_intern("object_id");
|
|
__send = rb_intern("__send");
|
|
__send_bang = rb_intern("__send!");
|
|
|
|
rb_global_variable((VALUE*)&top_scope);
|
|
rb_global_variable((VALUE*)&ruby_eval_tree);
|
|
rb_global_variable((VALUE*)&ruby_dyna_vars);
|
|
|
|
rb_define_virtual_variable("$@", errat_getter, errat_setter);
|
|
rb_define_hooked_variable("$!", &ruby_errinfo, 0, errinfo_setter);
|
|
|
|
rb_define_global_function("eval", rb_f_eval, -1);
|
|
rb_define_global_function("iterator?", rb_f_block_given_p, 0);
|
|
rb_define_global_function("block_given?", rb_f_block_given_p, 0);
|
|
rb_define_global_function("loop", rb_f_loop, 0);
|
|
|
|
rb_define_private_method(rb_cBasicObject, "method_missing", rb_method_missing, -1);
|
|
rb_define_method(rb_cBasicObject, "respond_to?", obj_respond_to, -1);
|
|
respond_to = rb_intern("respond_to?");
|
|
rb_global_variable((VALUE*)&basic_respond_to);
|
|
basic_respond_to = rb_method_node(rb_cBasicObject, respond_to);
|
|
|
|
rb_define_global_function("raise", rb_f_raise, -1);
|
|
rb_define_global_function("fail", rb_f_raise, -1);
|
|
|
|
rb_define_global_function("caller", rb_f_caller, -1);
|
|
|
|
rb_define_global_function("exit", rb_f_exit, -1);
|
|
rb_define_global_function("abort", rb_f_abort, -1);
|
|
|
|
rb_define_global_function("at_exit", rb_f_at_exit, 0);
|
|
|
|
rb_define_global_function("catch", rb_f_catch, 1);
|
|
rb_define_global_function("throw", rb_f_throw, -1);
|
|
rb_define_global_function("global_variables", rb_f_global_variables, 0); /* in variable.c */
|
|
rb_define_global_function("local_variables", rb_f_local_variables, 0);
|
|
|
|
rb_define_global_function("__method__", rb_f_method_name, 0);
|
|
rb_define_global_function("__callee__", rb_f_callee_name, 0);
|
|
|
|
rb_define_method(rb_cBasicObject, "send", rb_f_send, -1);
|
|
rb_define_method(rb_cBasicObject, "__send__", rb_f_send, -1);
|
|
rb_define_method(rb_cBasicObject, "__send", rb_f_send, -1);
|
|
rb_define_method(rb_cBasicObject, "funcall", rb_f_funcall, -1);
|
|
rb_define_method(rb_cBasicObject, "__send!", rb_f_funcall, -1);
|
|
rb_define_method(rb_mKernel, "instance_eval", rb_obj_instance_eval, -1);
|
|
rb_define_method(rb_mKernel, "instance_exec", rb_obj_instance_exec, -1);
|
|
|
|
rb_define_private_method(rb_cModule, "append_features", rb_mod_append_features, 1);
|
|
rb_define_private_method(rb_cModule, "extend_object", rb_mod_extend_object, 1);
|
|
rb_define_private_method(rb_cModule, "include", rb_mod_include, -1);
|
|
rb_define_private_method(rb_cModule, "public", rb_mod_public, -1);
|
|
rb_define_private_method(rb_cModule, "protected", rb_mod_protected, -1);
|
|
rb_define_private_method(rb_cModule, "private", rb_mod_private, -1);
|
|
rb_define_private_method(rb_cModule, "local", rb_mod_local, -1);
|
|
rb_define_private_method(rb_cModule, "module_function", rb_mod_modfunc, -1);
|
|
rb_define_method(rb_cModule, "method_defined?", rb_mod_method_defined, -1);
|
|
rb_define_method(rb_cModule, "public_method_defined?", rb_mod_public_method_defined, 1);
|
|
rb_define_method(rb_cModule, "private_method_defined?", rb_mod_private_method_defined, 1);
|
|
rb_define_method(rb_cModule, "protected_method_defined?", rb_mod_protected_method_defined, 1);
|
|
rb_define_method(rb_cModule, "public_class_method", rb_mod_public_method, -1);
|
|
rb_define_method(rb_cModule, "private_class_method", rb_mod_private_method, -1);
|
|
rb_define_method(rb_cModule, "module_eval", rb_mod_module_eval, -1);
|
|
rb_define_method(rb_cModule, "class_eval", rb_mod_module_eval, -1);
|
|
rb_define_method(rb_cModule, "module_exec", rb_mod_module_exec, -1);
|
|
rb_define_method(rb_cModule, "class_exec", rb_mod_module_exec, -1);
|
|
|
|
rb_undef_method(rb_cClass, "module_function");
|
|
|
|
rb_define_private_method(rb_cModule, "remove_method", rb_mod_remove_method, -1);
|
|
rb_define_private_method(rb_cModule, "undef_method", rb_mod_undef_method, -1);
|
|
rb_define_private_method(rb_cModule, "alias_method", rb_mod_alias_method, 2);
|
|
rb_define_private_method(rb_cModule, "define_method", rb_mod_define_method, -1);
|
|
|
|
rb_define_singleton_method(rb_cModule, "nesting", rb_mod_nesting, 0);
|
|
rb_define_singleton_method(rb_cModule, "constants", rb_mod_s_constants, 0);
|
|
|
|
rb_define_singleton_method(ruby_top_self, "include", top_include, -1);
|
|
rb_define_singleton_method(ruby_top_self, "public", top_public, -1);
|
|
rb_define_singleton_method(ruby_top_self, "private", top_private, -1);
|
|
|
|
rb_define_method(rb_mKernel, "extend", rb_obj_extend, -1);
|
|
|
|
rb_define_global_function("trace_var", rb_f_trace_var, -1); /* in variable.c */
|
|
rb_define_global_function("untrace_var", rb_f_untrace_var, -1); /* in variable.c */
|
|
|
|
rb_define_global_function("set_trace_func", set_trace_func, 1);
|
|
rb_global_variable(&trace_func);
|
|
|
|
rb_define_virtual_variable("$SAFE", safe_getter, safe_setter);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* mod.autoload(name, filename) => nil
|
|
*
|
|
* Registers _filename_ to be loaded (using <code>Kernel::require</code>)
|
|
* the first time that _name_ (which may be a <code>String</code> or
|
|
* a symbol) is accessed in the namespace of _mod_.
|
|
*
|
|
* module A
|
|
* end
|
|
* A.autoload(:B, "b")
|
|
* A::B.doit # autoloads "b"
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_autoload(VALUE mod, VALUE sym, VALUE file)
|
|
{
|
|
ID id = rb_to_id(sym);
|
|
|
|
Check_SafeStr(file);
|
|
rb_autoload(mod, id, RSTRING(file)->ptr);
|
|
return Qnil;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* mod.autoload?(name) => String or nil
|
|
*
|
|
* Returns _filename_ to be loaded if _name_ is registered as
|
|
* +autoload+ in the namespace of _mod_.
|
|
*
|
|
* module A
|
|
* end
|
|
* A.autoload(:B, "b")
|
|
* A.autoload?(:B) # => "b"
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_autoload_p(VALUE mod, VALUE sym)
|
|
{
|
|
return rb_autoload_p(mod, rb_to_id(sym));
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* autoload(module, filename) => nil
|
|
*
|
|
* Registers _filename_ to be loaded (using <code>Kernel::require</code>)
|
|
* the first time that _module_ (which may be a <code>String</code> or
|
|
* a symbol) is accessed.
|
|
*
|
|
* autoload(:MyModule, "/usr/local/lib/modules/my_module.rb")
|
|
*/
|
|
|
|
static VALUE
|
|
rb_f_autoload(VALUE obj, VALUE sym, VALUE file)
|
|
{
|
|
if (NIL_P(ruby_cbase)) {
|
|
rb_raise(rb_eTypeError, "no class/module for autoload target");
|
|
}
|
|
return rb_mod_autoload(ruby_cbase, sym, file);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* autoload(module) => filename or nil
|
|
*
|
|
* Returns _filename_ to be loaded if _module_ is registered as
|
|
* +autoload+.
|
|
*
|
|
* autoload(:MyModule, "/usr/local/lib/modules/my_module.rb")
|
|
* autoload?(:MyModule) # => "/usr/local/lib/modules/my_module.rb"
|
|
*/
|
|
|
|
static VALUE
|
|
rb_f_autoload_p(VALUE obj, VALUE sym)
|
|
{
|
|
/* use ruby_cbase as same as rb_f_autoload. */
|
|
if (NIL_P(ruby_cbase)) {
|
|
return Qfalse;
|
|
}
|
|
return rb_mod_autoload_p(ruby_cbase, sym);
|
|
}
|
|
|
|
void
|
|
Init_load(void)
|
|
{
|
|
rb_define_readonly_variable("$:", &rb_load_path);
|
|
rb_define_readonly_variable("$-I", &rb_load_path);
|
|
rb_define_readonly_variable("$LOAD_PATH", &rb_load_path);
|
|
rb_load_path = rb_ary_new();
|
|
|
|
rb_define_readonly_variable("$\"", &rb_features);
|
|
rb_define_readonly_variable("$LOADED_FEATURES", &rb_features);
|
|
rb_features = rb_ary_new();
|
|
|
|
rb_define_global_function("load", rb_f_load, -1);
|
|
rb_define_global_function("require", rb_f_require, 1);
|
|
rb_define_method(rb_cModule, "autoload", rb_mod_autoload, 2);
|
|
rb_define_method(rb_cModule, "autoload?", rb_mod_autoload_p, 1);
|
|
rb_define_global_function("autoload", rb_f_autoload, 2);
|
|
rb_define_global_function("autoload?", rb_f_autoload_p, 1);
|
|
rb_global_variable(&ruby_wrapper);
|
|
|
|
rb_global_variable(&ruby_dln_librefs);
|
|
ruby_dln_librefs = rb_ary_new();
|
|
}
|
|
|
|
static void
|
|
scope_dup(struct SCOPE *scope)
|
|
{
|
|
volatile ID *tbl;
|
|
VALUE *vars;
|
|
|
|
scope->flags |= SCOPE_DONT_RECYCLE;
|
|
if (scope->flags & SCOPE_MALLOC) return;
|
|
|
|
if (scope->local_tbl) {
|
|
tbl = scope->local_tbl;
|
|
vars = ALLOC_N(VALUE, tbl[0]+1);
|
|
*vars++ = scope->local_vars[-1];
|
|
MEMCPY(vars, scope->local_vars, VALUE, tbl[0]);
|
|
scope->local_vars = vars;
|
|
scope->flags |= SCOPE_MALLOC;
|
|
}
|
|
}
|
|
|
|
static void
|
|
blk_mark(struct BLOCK *data)
|
|
{
|
|
while (data) {
|
|
rb_gc_mark_frame(&data->frame);
|
|
rb_gc_mark((VALUE)data->scope);
|
|
rb_gc_mark((VALUE)data->var);
|
|
rb_gc_mark((VALUE)data->body);
|
|
rb_gc_mark((VALUE)data->self);
|
|
rb_gc_mark((VALUE)data->dyna_vars);
|
|
rb_gc_mark((VALUE)data->cref);
|
|
rb_gc_mark(data->wrapper);
|
|
rb_gc_mark(data->block_obj);
|
|
data = data->frame.block;
|
|
}
|
|
}
|
|
|
|
static void
|
|
frame_free(struct FRAME *frame)
|
|
{
|
|
struct FRAME *tmp;
|
|
|
|
frame = frame->prev;
|
|
while (frame) {
|
|
tmp = frame;
|
|
frame = frame->prev;
|
|
free(tmp);
|
|
}
|
|
}
|
|
|
|
static void
|
|
blk_free(struct BLOCK *data)
|
|
{
|
|
void *tmp;
|
|
|
|
while (data) {
|
|
frame_free(&data->frame);
|
|
tmp = data;
|
|
data = data->frame.block;
|
|
free(tmp);
|
|
}
|
|
}
|
|
|
|
static void
|
|
frame_dup(struct FRAME *frame)
|
|
{
|
|
struct FRAME *tmp;
|
|
|
|
for (;;) {
|
|
frame->tmp = 0; /* should not preserve tmp */
|
|
if (!frame->prev) break;
|
|
tmp = ALLOC(struct FRAME);
|
|
*tmp = *frame->prev;
|
|
frame->prev = tmp;
|
|
frame = tmp;
|
|
}
|
|
}
|
|
|
|
static void
|
|
dvar_nail_down(struct RVarmap *vars)
|
|
{
|
|
while (vars) {
|
|
if (FL_TEST(vars, DVAR_DONT_RECYCLE)) break;
|
|
FL_SET(vars, DVAR_DONT_RECYCLE);
|
|
vars = vars->next;
|
|
}
|
|
}
|
|
|
|
static void
|
|
blk_nail_down(struct BLOCK *block)
|
|
{
|
|
struct BLOCK *tmp;
|
|
|
|
dvar_nail_down(block->dyna_vars);
|
|
while (block->frame.block) {
|
|
tmp = ALLOC_N(struct BLOCK, 1);
|
|
MEMCPY(tmp, block->frame.block, struct BLOCK, 1);
|
|
scope_dup(tmp->scope);
|
|
frame_dup(&tmp->frame);
|
|
dvar_nail_down(tmp->dyna_vars);
|
|
block->frame.block = tmp;
|
|
block = tmp;
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
blk_dup(struct BLOCK *dup, struct BLOCK *orig)
|
|
{
|
|
MEMCPY(dup, orig, struct BLOCK, 1);
|
|
frame_dup(&dup->frame);
|
|
blk_nail_down(dup);
|
|
}
|
|
|
|
/*
|
|
* MISSING: documentation
|
|
*/
|
|
|
|
static VALUE
|
|
proc_clone(VALUE self)
|
|
{
|
|
struct BLOCK *orig, *data;
|
|
VALUE bind;
|
|
|
|
Data_Get_Struct(self, struct BLOCK, orig);
|
|
bind = Data_Make_Struct(rb_obj_class(self),struct BLOCK,blk_mark,blk_free,data);
|
|
CLONESETUP(bind, self);
|
|
blk_dup(data, orig);
|
|
if (orig->block_obj) data->block_obj = bind;
|
|
|
|
return bind;
|
|
}
|
|
|
|
/*
|
|
* MISSING: documentation
|
|
*/
|
|
|
|
static VALUE
|
|
proc_dup(VALUE self)
|
|
{
|
|
struct BLOCK *orig, *data;
|
|
VALUE bind;
|
|
|
|
Data_Get_Struct(self, struct BLOCK, orig);
|
|
bind = Data_Make_Struct(rb_obj_class(self),struct BLOCK,blk_mark,blk_free,data);
|
|
blk_dup(data, orig);
|
|
|
|
return bind;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* binding -> a_binding
|
|
*
|
|
* Returns a +Binding+ object, describing the variable and
|
|
* method bindings at the point of call. This object can be used when
|
|
* calling +eval+ to execute the evaluated command in this
|
|
* environment. Also see the description of class +Binding+.
|
|
*
|
|
* def getBinding(param)
|
|
* return binding
|
|
* end
|
|
* b = getBinding("hello")
|
|
* eval("param", b) #=> "hello"
|
|
*/
|
|
|
|
static VALUE
|
|
rb_f_binding(VALUE self)
|
|
{
|
|
struct BLOCK *data;
|
|
VALUE bind;
|
|
|
|
PUSH_FRAME(Qtrue);
|
|
PUSH_BLOCK(ruby_frame->block,0,0);
|
|
bind = Data_Make_Struct(rb_cBinding,struct BLOCK,blk_mark,blk_free,data);
|
|
*data = *ruby_frame->block;
|
|
|
|
data->orig_thread = rb_thread_current();
|
|
data->wrapper = ruby_wrapper;
|
|
frame_dup(&data->frame);
|
|
if (ruby_frame->prev) {
|
|
data->frame.callee = ruby_frame->prev->callee;
|
|
data->frame.this_func = ruby_frame->prev->this_func;
|
|
data->frame.this_class = ruby_frame->prev->this_class;
|
|
}
|
|
blk_nail_down(data);
|
|
scope_dup(data->scope);
|
|
POP_BLOCK();
|
|
POP_FRAME();
|
|
|
|
return bind;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* binding.eval(string [, filename [,lineno]]) => obj
|
|
*
|
|
* Evaluates the Ruby expression(s) in <em>string</em>, in the
|
|
* <em>binding</em>'s context. If the optional <em>filename</em> and
|
|
* <em>lineno</em> parameters are present, they will be used when
|
|
* reporting syntax errors.
|
|
*
|
|
* def getBinding(param)
|
|
* return binding
|
|
* end
|
|
* b = getBinding("hello")
|
|
* b.eval("param") #=> "hello"
|
|
*/
|
|
|
|
static VALUE
|
|
bind_eval(int argc, VALUE *argv, VALUE bind)
|
|
{
|
|
struct BLOCK *data;
|
|
VALUE args[4];
|
|
|
|
rb_scan_args(argc, argv, "12", &args[0], &args[2], &args[3]);
|
|
args[1] = bind;
|
|
Data_Get_Struct(bind, struct BLOCK, data);
|
|
|
|
return rb_f_eval(argc+1, args, data->self);
|
|
}
|
|
|
|
#define PROC_TSHIFT (FL_USHIFT+1)
|
|
#define PROC_TMASK (FL_USER1|FL_USER2|FL_USER3)
|
|
#define PROC_TMAX (PROC_TMASK >> PROC_TSHIFT)
|
|
#define PROC_SAFE_SAVED FL_USER4
|
|
|
|
#define SAFE_LEVEL_MAX PROC_TMASK
|
|
|
|
#define proc_safe_level_p(data) (RBASIC(data)->flags & PROC_SAFE_SAVED)
|
|
#define proc_delete_safe_level(data) FL_UNSET(data, PROC_SAFE_SAVED)
|
|
|
|
static void
|
|
proc_save_safe_level(VALUE data)
|
|
{
|
|
int safe = ruby_safe_level;
|
|
if (safe > PROC_TMAX) safe = PROC_TMAX;
|
|
FL_UNSET(data, PROC_TMASK);
|
|
FL_SET(data, (safe << PROC_TSHIFT) & PROC_TMASK);
|
|
FL_SET(data, PROC_SAFE_SAVED);
|
|
}
|
|
|
|
static int
|
|
proc_get_safe_level(VALUE data)
|
|
{
|
|
return (RBASIC(data)->flags & PROC_TMASK) >> PROC_TSHIFT;
|
|
}
|
|
|
|
static void
|
|
proc_set_safe_level(VALUE data)
|
|
{
|
|
if (!proc_safe_level_p(data)) return;
|
|
ruby_safe_level = proc_get_safe_level(data);
|
|
}
|
|
|
|
static VALUE
|
|
proc_alloc(VALUE klass, struct BLOCK *blk, int lambda)
|
|
{
|
|
volatile VALUE block;
|
|
struct BLOCK *data;
|
|
|
|
block = Data_Make_Struct(klass, struct BLOCK, blk_mark, blk_free, data);
|
|
*data = *blk;
|
|
|
|
if (!lambda && data->block_obj) {
|
|
return data->block_obj;
|
|
}
|
|
data->orig_thread = rb_thread_current();
|
|
data->wrapper = ruby_wrapper;
|
|
frame_dup(&data->frame);
|
|
blk_nail_down(data);
|
|
scope_dup(data->scope);
|
|
proc_save_safe_level(block);
|
|
if (lambda) {
|
|
data->flags |= BLOCK_LAMBDA;
|
|
}
|
|
else {
|
|
data->block_obj = block;
|
|
}
|
|
return block;
|
|
}
|
|
|
|
static VALUE
|
|
proc_new(VALUE klass, int lambda)
|
|
{
|
|
volatile VALUE block;
|
|
struct FRAME *frame = ruby_frame;
|
|
|
|
if (!rb_block_given_p()) {
|
|
if (lambda || !ruby_frame->prev || !ruby_frame->prev->block) {
|
|
rb_raise(rb_eArgError, "tried to create Proc object without a block");
|
|
}
|
|
frame = ruby_frame->prev;
|
|
}
|
|
else if (!lambda && frame->block->block_obj) {
|
|
VALUE obj = frame->block->block_obj;
|
|
if (CLASS_OF(obj) != klass) {
|
|
obj = proc_clone(obj);
|
|
RBASIC(obj)->klass = klass;
|
|
}
|
|
return obj;
|
|
}
|
|
block = proc_alloc(klass, frame->block, lambda);
|
|
if (!lambda) {
|
|
frame->block->block_obj = block;
|
|
}
|
|
return block;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* Proc.new {|...| block } => a_proc
|
|
* Proc.new => a_proc
|
|
*
|
|
* Creates a new <code>Proc</code> object, bound to the current
|
|
* context. <code>Proc::new</code> may be called without a block only
|
|
* within a method with an attached block, in which case that block is
|
|
* converted to the <code>Proc</code> object.
|
|
*
|
|
* def proc_from
|
|
* Proc.new
|
|
* end
|
|
* proc = proc_from { "hello" }
|
|
* proc.call #=> "hello"
|
|
*/
|
|
|
|
static VALUE
|
|
proc_s_new(int argc, VALUE *argv, VALUE klass)
|
|
{
|
|
VALUE block = proc_new(klass, Qfalse);
|
|
|
|
rb_obj_call_init(block, argc, argv);
|
|
return block;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* proc {|...| block } => a_proc
|
|
*
|
|
* Equivalent to <code>Proc.new</code>.
|
|
*/
|
|
|
|
VALUE
|
|
rb_block_proc(void)
|
|
{
|
|
return proc_new(rb_cProc, Qfalse);
|
|
}
|
|
|
|
VALUE
|
|
rb_f_lambda(void)
|
|
{
|
|
rb_warn("rb_f_lambda() is deprecated; use rb_block_proc() instead");
|
|
return proc_new(rb_cProc, Qtrue);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* lambda { |...| block } => a_proc
|
|
*
|
|
* Equivalent to <code>Proc.new</code>, except the resulting Proc objects
|
|
* check the number of parameters passed when called.
|
|
*/
|
|
|
|
static VALUE
|
|
proc_lambda(void)
|
|
{
|
|
return proc_new(rb_cProc, Qtrue);
|
|
}
|
|
|
|
static int
|
|
block_orphan(struct BLOCK *data)
|
|
{
|
|
if (data->flags & (BLOCK_LAMBDA|BLOCK_FROM_METHOD)) {
|
|
return 1;
|
|
}
|
|
if (data->scope->flags & SCOPE_NOSTACK) {
|
|
return 1;
|
|
}
|
|
if (data->orig_thread != rb_thread_current()) {
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static VALUE
|
|
proc_invoke(VALUE proc, VALUE args /* OK */, VALUE self, VALUE klass, int call)
|
|
{
|
|
struct BLOCK _block;
|
|
struct BLOCK *data;
|
|
volatile VALUE result = Qundef;
|
|
int state;
|
|
volatile int safe = ruby_safe_level;
|
|
volatile VALUE old_wrapper = ruby_wrapper;
|
|
volatile int pcall, lambda;
|
|
VALUE bvar = 0;
|
|
|
|
Data_Get_Struct(proc, struct BLOCK, data);
|
|
pcall = call ? YIELD_ARY_ARGS : 0;
|
|
pcall |= YIELD_PROC_INVOKE;
|
|
lambda = data->flags & BLOCK_LAMBDA;
|
|
if (rb_block_given_p() && ruby_frame->callee) {
|
|
if (klass != ruby_frame->this_class)
|
|
klass = rb_obj_class(proc);
|
|
}
|
|
|
|
PUSH_VARS();
|
|
ruby_wrapper = data->wrapper;
|
|
ruby_dyna_vars = data->dyna_vars;
|
|
/* PUSH BLOCK from data */
|
|
_block = *data;
|
|
_block.block_obj = bvar;
|
|
if (self != Qundef) _block.frame.self = self;
|
|
if (klass) _block.frame.this_class = klass;
|
|
_block.frame.argc = call ? RARRAY(args)->len : 1;
|
|
_block.frame.flags = ruby_frame->flags;
|
|
if (_block.frame.argc && (ruby_frame->flags & FRAME_DMETH)) {
|
|
NEWOBJ(scope, struct SCOPE);
|
|
OBJSETUP(scope, args, T_SCOPE);
|
|
scope->local_tbl = _block.scope->local_tbl;
|
|
scope->local_vars = _block.scope->local_vars;
|
|
_block.scope = scope;
|
|
}
|
|
PUSH_FRAME(Qfalse);
|
|
ruby_frame->block = &_block;
|
|
PUSH_TAG(lambda ? PROT_LAMBDA : PROT_NONE);
|
|
state = EXEC_TAG();
|
|
if (state == 0) {
|
|
proc_set_safe_level(proc);
|
|
result = rb_yield_0(args, self, (self!=Qundef)?CLASS_OF(self):0, pcall);
|
|
}
|
|
else if (TAG_DST()) {
|
|
result = prot_tag->retval;
|
|
}
|
|
POP_TAG();
|
|
POP_FRAME();
|
|
ruby_wrapper = old_wrapper;
|
|
POP_VARS();
|
|
if (proc_safe_level_p(proc))
|
|
ruby_safe_level = safe;
|
|
|
|
switch (state) {
|
|
case 0:
|
|
break;
|
|
case TAG_RETRY:
|
|
proc_jump_error(TAG_RETRY, Qnil); /* xxx */
|
|
JUMP_TAG(state);
|
|
break;
|
|
case TAG_BREAK:
|
|
if (lambda && result != Qundef) break;
|
|
JUMP_TAG(state);
|
|
case TAG_RETURN:
|
|
if (result != Qundef) {
|
|
if (pcall) break;
|
|
return_jump(result);
|
|
}
|
|
default:
|
|
JUMP_TAG(state);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/* CHECKME: are the argument checking semantics correct? */
|
|
|
|
/*
|
|
* call-seq:
|
|
* prc.call(params,...) => obj
|
|
* prc[params,...] => obj
|
|
*
|
|
* Invokes the block, setting the block's parameters to the values in
|
|
* <i>params</i> using something close to method calling semantics.
|
|
* Generates a warning if multiple values are passed to a proc that
|
|
* expects just one (previously this silently converted the parameters
|
|
* to an array).
|
|
*
|
|
* For procs created using <code>Kernel.proc</code>, generates an
|
|
* error if the wrong number of parameters
|
|
* are passed to a proc with multiple parameters. For procs created using
|
|
* <code>Proc.new</code>, extra parameters are silently discarded.
|
|
*
|
|
* Returns the value of the last expression evaluated in the block. See
|
|
* also <code>Proc#yield</code>.
|
|
*
|
|
* a_proc = Proc.new {|a, *b| b.collect {|i| i*a }}
|
|
* a_proc.call(9, 1, 2, 3) #=> [9, 18, 27]
|
|
* a_proc[9, 1, 2, 3] #=> [9, 18, 27]
|
|
* a_proc = Proc.new {|a,b| a}
|
|
* a_proc.call(1,2,3)
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* prog.rb:5: wrong number of arguments (3 for 2) (ArgumentError)
|
|
* from prog.rb:4:in `call'
|
|
* from prog.rb:5
|
|
*/
|
|
|
|
VALUE
|
|
rb_proc_call(VALUE proc, VALUE args /* OK */)
|
|
{
|
|
return proc_invoke(proc, args, Qundef, 0, 1);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* prc.yield(params,...) => obj
|
|
*
|
|
* Invokes the block, setting the block's parameters to the values in
|
|
* <i>params</i> in the same manner the yield statement does.
|
|
*
|
|
* a_proc = Proc.new {|a, *b| b.collect {|i| i*a }}
|
|
* a_proc.yield(9, 1, 2, 3) #=> [9, 18, 27]
|
|
* a_proc.yield([9, 1, 2, 3]) #=> [9, 18, 27]
|
|
* a_proc = Proc.new {|a,b| a}
|
|
* a_proc.yield(1,2,3) # => [1]
|
|
*/
|
|
|
|
VALUE
|
|
rb_proc_yield(int argc, VALUE *argv, VALUE proc)
|
|
{
|
|
switch (argc) {
|
|
case 1:
|
|
if (!NIL_P(argv[0])) {
|
|
return proc_invoke(proc, argv[0], Qundef, 0, 0);
|
|
}
|
|
/* fall through */
|
|
case 0:
|
|
return proc_invoke(proc, Qundef, Qundef, 0, 0);
|
|
default:
|
|
return proc_invoke(proc, rb_ary_new4(argc, argv), Qundef, 0, 0);
|
|
}
|
|
}
|
|
|
|
/* :nodoc: */
|
|
static VALUE
|
|
nil_yield(int argc, VALUE *argv)
|
|
{
|
|
localjump_error("no block given", Qnil, 0, backtrace(0));
|
|
return Qnil; /* not reached */
|
|
}
|
|
|
|
int
|
|
rb_proc_arity(VALUE proc)
|
|
{
|
|
struct BLOCK *data;
|
|
NODE *var, *list;
|
|
int n;
|
|
|
|
Data_Get_Struct(proc, struct BLOCK, data);
|
|
var = data->var;
|
|
if (var == 0) {
|
|
if (!data->body) return 0;
|
|
if (nd_type(data->body) == NODE_IFUNC &&
|
|
data->body->nd_cfnc == bmcall) {
|
|
return method_arity(data->body->nd_tval);
|
|
}
|
|
return 0;
|
|
}
|
|
if (var == (NODE*)1) return 0;
|
|
if (var == (NODE*)2) return 0;
|
|
if (nd_type(var) == NODE_BLOCK_ARG) {
|
|
var = var->nd_args;
|
|
if (var == (NODE*)1) return 0;
|
|
if (var == (NODE*)2) return 0;
|
|
}
|
|
switch (nd_type(var)) {
|
|
default:
|
|
return 1;
|
|
case NODE_MASGN:
|
|
list = var->nd_head;
|
|
n = 0;
|
|
while (list) {
|
|
n++;
|
|
list = list->nd_next;
|
|
}
|
|
if (var->nd_args) {
|
|
if (var->nd_args != (NODE *)-1 && nd_type(var->nd_args) == NODE_POSTARG) {
|
|
return -n-1-var->nd_args->nd_head->nd_alen;
|
|
}
|
|
return -n-1;
|
|
}
|
|
return n;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* prc.arity -> fixnum
|
|
*
|
|
* Returns the number of arguments that would not be ignored. If the block
|
|
* is declared to take no arguments, returns 0. If the block is known
|
|
* to take exactly n arguments, returns n. If the block has optional
|
|
* arguments, return -n-1, where n is the number of mandatory
|
|
* arguments. A <code>proc</code> with no argument declarations
|
|
* is the same a block declaring <code>||</code> as its arguments.
|
|
*
|
|
* Proc.new {}.arity #=> 0
|
|
* Proc.new {||}.arity #=> 0
|
|
* Proc.new {|a|}.arity #=> 1
|
|
* Proc.new {|a,b|}.arity #=> 2
|
|
* Proc.new {|a,b,c|}.arity #=> 3
|
|
* Proc.new {|*a|}.arity #=> -1
|
|
* Proc.new {|a,*b|}.arity #=> -2
|
|
*/
|
|
|
|
static VALUE
|
|
proc_arity(VALUE proc)
|
|
{
|
|
int arity = rb_proc_arity(proc);
|
|
return INT2FIX(arity);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* prc == other_proc => true or false
|
|
*
|
|
* Return <code>true</code> if <i>prc</i> is the same object as
|
|
* <i>other_proc</i>, or if they are both procs with the same body.
|
|
*/
|
|
|
|
static VALUE
|
|
proc_eq(VALUE self, VALUE other)
|
|
{
|
|
struct BLOCK *data, *data2;
|
|
|
|
if (self == other) return Qtrue;
|
|
if (TYPE(other) != T_DATA) return Qfalse;
|
|
if (RDATA(other)->dmark != (RUBY_DATA_FUNC)blk_mark) return Qfalse;
|
|
if (CLASS_OF(self) != CLASS_OF(other)) return Qfalse;
|
|
Data_Get_Struct(self, struct BLOCK, data);
|
|
Data_Get_Struct(other, struct BLOCK, data2);
|
|
if (data->body != data2->body) return Qfalse;
|
|
if (data->var != data2->var) return Qfalse;
|
|
if (data->scope != data2->scope) return Qfalse;
|
|
if (data->dyna_vars != data2->dyna_vars) return Qfalse;
|
|
if (data->flags != data2->flags) return Qfalse;
|
|
|
|
return Qtrue;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* prc.hash => integer
|
|
*
|
|
* Return hash value corresponding to proc body.
|
|
*/
|
|
|
|
static VALUE
|
|
proc_hash(VALUE self)
|
|
{
|
|
struct BLOCK *data;
|
|
long hash;
|
|
|
|
Data_Get_Struct(self, struct BLOCK, data);
|
|
hash = (long)data->body;
|
|
hash ^= (long)data->var;
|
|
hash ^= data->frame.uniq << 16;
|
|
hash ^= data->flags;
|
|
|
|
return INT2FIX(hash);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* prc.to_s => string
|
|
*
|
|
* Shows the unique identifier for this proc, along with
|
|
* an indication of where the proc was defined.
|
|
*/
|
|
|
|
static VALUE
|
|
proc_to_s(VALUE self)
|
|
{
|
|
struct BLOCK *data;
|
|
NODE *node;
|
|
char *cname = rb_obj_classname(self);
|
|
VALUE str;
|
|
|
|
Data_Get_Struct(self, struct BLOCK, data);
|
|
if ((node = data->frame.node) || (node = data->body)) {
|
|
str = rb_sprintf("#<%s:%p@%s:%d>", cname, data->body,
|
|
node->nd_file, nd_line(node));
|
|
}
|
|
else {
|
|
str = rb_sprintf("#<%s:%p>", cname, data->body);
|
|
}
|
|
if (OBJ_TAINTED(self)) OBJ_TAINT(str);
|
|
|
|
return str;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* prc.to_proc -> prc
|
|
*
|
|
* Part of the protocol for converting objects to <code>Proc</code>
|
|
* objects. Instances of class <code>Proc</code> simply return
|
|
* themselves.
|
|
*/
|
|
|
|
static VALUE
|
|
proc_to_self(VALUE self)
|
|
{
|
|
return self;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* prc.binding => binding
|
|
*
|
|
* Returns the binding associated with <i>prc</i>. Note that
|
|
* <code>Kernel#eval</code> accepts either a <code>Proc</code> or a
|
|
* <code>Binding</code> object as its second parameter.
|
|
*
|
|
* def fred(param)
|
|
* proc {}
|
|
* end
|
|
*
|
|
* b = fred(99)
|
|
* eval("param", b.binding) #=> 99
|
|
* eval("param", b) #=> 99
|
|
*/
|
|
|
|
static VALUE
|
|
proc_binding(VALUE proc)
|
|
{
|
|
struct BLOCK *orig, *data;
|
|
VALUE bind;
|
|
|
|
Data_Get_Struct(proc, struct BLOCK, orig);
|
|
bind = Data_Make_Struct(rb_cBinding,struct BLOCK,blk_mark,blk_free,data);
|
|
MEMCPY(data, orig, struct BLOCK, 1);
|
|
frame_dup(&data->frame);
|
|
blk_nail_down(data);
|
|
|
|
return bind;
|
|
}
|
|
|
|
struct block_arg {
|
|
VALUE self;
|
|
NODE *iter;
|
|
};
|
|
|
|
static struct BLOCK *
|
|
passing_block(VALUE proc, struct BLOCK *blockp)
|
|
{
|
|
VALUE b;
|
|
struct BLOCK *data;
|
|
volatile int orphan;
|
|
|
|
if (NIL_P(proc)) return 0;
|
|
if (!rb_obj_is_proc(proc)) {
|
|
b = rb_check_convert_type(proc, T_DATA, "Proc", "to_proc");
|
|
if (!rb_obj_is_proc(b)) {
|
|
rb_raise(rb_eTypeError, "wrong argument type %s (expected Proc)",
|
|
rb_obj_classname(proc));
|
|
}
|
|
proc = b;
|
|
}
|
|
|
|
if (ruby_safe_level >= 1 && OBJ_TAINTED(proc) &&
|
|
ruby_safe_level > proc_get_safe_level(proc)) {
|
|
rb_raise(rb_eSecurityError, "Insecure: tainted block value");
|
|
}
|
|
|
|
Data_Get_Struct(proc, struct BLOCK, data);
|
|
orphan = block_orphan(data);
|
|
if (!orphan) return data;
|
|
|
|
*blockp = *data;
|
|
blockp->uniq = block_unique++;
|
|
return blockp;
|
|
}
|
|
|
|
static void
|
|
bm_mark(struct METHOD *data)
|
|
{
|
|
rb_gc_mark(data->rklass);
|
|
rb_gc_mark(data->klass);
|
|
rb_gc_mark(data->recv);
|
|
rb_gc_mark((VALUE)data->body);
|
|
}
|
|
|
|
static VALUE
|
|
mnew(VALUE klass, VALUE obj, ID id, VALUE mklass)
|
|
{
|
|
VALUE method;
|
|
NODE *body;
|
|
struct METHOD *data;
|
|
VALUE rklass = klass;
|
|
ID oid = id;
|
|
int noex = LOOKUP_NORMAL;
|
|
|
|
again:
|
|
if ((body = rb_get_method_body(&klass, &id, &noex)) == 0) {
|
|
raise_undef(rklass, oid);
|
|
}
|
|
|
|
if (nd_type(body) == NODE_ZSUPER) {
|
|
klass = RCLASS(klass)->super;
|
|
goto again;
|
|
}
|
|
|
|
while (rklass != klass &&
|
|
(FL_TEST(rklass, FL_SINGLETON) || TYPE(rklass) == T_ICLASS)) {
|
|
rklass = RCLASS(rklass)->super;
|
|
}
|
|
if (TYPE(klass) == T_ICLASS) klass = RBASIC(klass)->klass;
|
|
method = Data_Make_Struct(mklass, struct METHOD, bm_mark, -1, data);
|
|
data->klass = klass;
|
|
data->recv = obj;
|
|
data->id = id;
|
|
data->body = body;
|
|
data->rklass = rklass;
|
|
data->oid = oid;
|
|
data->safe_level = NOEX_WITH_SAFE(0);
|
|
OBJ_INFECT(method, klass);
|
|
|
|
return method;
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
*
|
|
* Document-class : Method
|
|
*
|
|
* Method objects are created by <code>Object#method</code>, and are
|
|
* associated with a particular object (not just with a class). They
|
|
* may be used to invoke the method within the object, and as a block
|
|
* associated with an iterator. They may also be unbound from one
|
|
* object (creating an <code>UnboundMethod</code>) and bound to
|
|
* another.
|
|
*
|
|
* class Thing
|
|
* def square(n)
|
|
* n*n
|
|
* end
|
|
* end
|
|
* thing = Thing.new
|
|
* meth = thing.method(:square)
|
|
*
|
|
* meth.call(9) #=> 81
|
|
* [ 1, 2, 3 ].collect(&meth) #=> [1, 4, 9]
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* call-seq:
|
|
* meth == other_meth => true or false
|
|
*
|
|
* Two method objects are equal if that are bound to the same
|
|
* object and contain the same body.
|
|
*/
|
|
|
|
|
|
static VALUE
|
|
method_eq(VALUE method, VALUE other)
|
|
{
|
|
struct METHOD *m1, *m2;
|
|
|
|
if (TYPE(other) != T_DATA || RDATA(other)->dmark != (RUBY_DATA_FUNC)bm_mark)
|
|
return Qfalse;
|
|
if (CLASS_OF(method) != CLASS_OF(other))
|
|
return Qfalse;
|
|
|
|
Data_Get_Struct(method, struct METHOD, m1);
|
|
Data_Get_Struct(other, struct METHOD, m2);
|
|
|
|
if (m1->klass != m2->klass || m1->rklass != m2->rklass ||
|
|
m1->recv != m2->recv || m1->body != m2->body)
|
|
return Qfalse;
|
|
|
|
return Qtrue;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* meth.hash => integer
|
|
*
|
|
* Return a hash value corresponding to the method object.
|
|
*/
|
|
|
|
static VALUE
|
|
method_hash(VALUE method)
|
|
{
|
|
struct METHOD *m;
|
|
long hash;
|
|
|
|
Data_Get_Struct(method, struct METHOD, m);
|
|
hash = (long)m->klass;
|
|
hash ^= (long)m->rklass;
|
|
hash ^= (long)m->recv;
|
|
hash ^= (long)m->body;
|
|
|
|
return INT2FIX(hash);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* meth.unbind => unbound_method
|
|
*
|
|
* Dissociates <i>meth</i> from it's current receiver. The resulting
|
|
* <code>UnboundMethod</code> can subsequently be bound to a new object
|
|
* of the same class (see <code>UnboundMethod</code>).
|
|
*/
|
|
|
|
static VALUE
|
|
method_unbind(VALUE obj)
|
|
{
|
|
VALUE method;
|
|
struct METHOD *orig, *data;
|
|
|
|
Data_Get_Struct(obj, struct METHOD, orig);
|
|
method = Data_Make_Struct(rb_cUnboundMethod, struct METHOD, bm_mark, free, data);
|
|
data->klass = orig->klass;
|
|
data->recv = Qundef;
|
|
data->id = orig->id;
|
|
data->body = orig->body;
|
|
data->rklass = orig->rklass;
|
|
data->oid = orig->oid;
|
|
OBJ_INFECT(method, obj);
|
|
|
|
return method;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* obj.method(sym) => method
|
|
*
|
|
* Looks up the named method as a receiver in <i>obj</i>, returning a
|
|
* <code>Method</code> object (or raising <code>NameError</code>). The
|
|
* <code>Method</code> object acts as a closure in <i>obj</i>'s object
|
|
* instance, so instance variables and the value of <code>self</code>
|
|
* remain available. Looks for private methods if optional second
|
|
* argument is true.
|
|
|
|
*
|
|
* class Demo
|
|
* def initialize(n)
|
|
* @iv = n
|
|
* end
|
|
* def hello()
|
|
* "Hello, @iv = #{@iv}"
|
|
* end
|
|
* end
|
|
*
|
|
* k = Demo.new(99)
|
|
* m = k.method(:hello)
|
|
* m.call #=> "Hello, @iv = 99"
|
|
*
|
|
* l = Demo.new('Fred')
|
|
* m = l.method("hello")
|
|
* m.call #=> "Hello, @iv = Fred"
|
|
*/
|
|
|
|
VALUE
|
|
rb_obj_method(VALUE obj, VALUE vid)
|
|
{
|
|
return mnew(CLASS_OF(obj), obj, rb_to_id(vid), rb_cMethod);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* mod.instance_method(symbol) => unbound_method
|
|
*
|
|
* Returns an +UnboundMethod+ representing the given instance method
|
|
* in _mod_.
|
|
*
|
|
* class Interpreter
|
|
* def do_a() print "there, "; end
|
|
* def do_d() print "Hello "; end
|
|
* def do_e() print "!\n"; end
|
|
* def do_v() print "Dave"; end
|
|
* Dispatcher = {
|
|
* ?a => instance_method(:do_a),
|
|
* ?d => instance_method(:do_d),
|
|
* ?e => instance_method(:do_e),
|
|
* ?v => instance_method(:do_v)
|
|
* }
|
|
* def interpret(string)
|
|
* string.each_byte {|b| Dispatcher[b].bind(self).call }
|
|
* end
|
|
* end
|
|
*
|
|
*
|
|
* interpreter = Interpreter.new
|
|
* interpreter.interpret('dave')
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* Hello there, Dave!
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_method(VALUE mod, VALUE vid)
|
|
{
|
|
return mnew(mod, Qundef, rb_to_id(vid), rb_cUnboundMethod);
|
|
}
|
|
|
|
/*
|
|
* MISSING: documentation
|
|
*/
|
|
|
|
static VALUE
|
|
method_clone(VALUE self)
|
|
{
|
|
VALUE clone;
|
|
struct METHOD *orig, *data;
|
|
|
|
Data_Get_Struct(self, struct METHOD, orig);
|
|
clone = Data_Make_Struct(CLASS_OF(self),struct METHOD, bm_mark, free, data);
|
|
CLONESETUP(clone, self);
|
|
*data = *orig;
|
|
|
|
return clone;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* meth.call(args, ...) => obj
|
|
* meth[args, ...] => obj
|
|
*
|
|
* Invokes the <i>meth</i> with the specified arguments, returning the
|
|
* method's return value.
|
|
*
|
|
* m = 12.method("+")
|
|
* m.call(3) #=> 15
|
|
* m.call(20) #=> 32
|
|
*/
|
|
|
|
VALUE
|
|
rb_method_call(int argc, VALUE *argv, VALUE method)
|
|
{
|
|
VALUE result = Qnil; /* OK */
|
|
struct METHOD *data;
|
|
int safe;
|
|
|
|
Data_Get_Struct(method, struct METHOD, data);
|
|
if (data->recv == Qundef) {
|
|
rb_raise(rb_eTypeError, "can't call unbound method; bind first");
|
|
}
|
|
if (OBJ_TAINTED(method)) {
|
|
safe = NOEX_WITH(data->safe_level, 4);
|
|
}
|
|
else {
|
|
safe = data->safe_level;
|
|
}
|
|
result = rb_call0(data->klass,data->recv,data->id,data->oid,
|
|
argc,argv,ruby_frame->block,data->body,safe);
|
|
return result;
|
|
}
|
|
|
|
/**********************************************************************
|
|
*
|
|
* Document-class: UnboundMethod
|
|
*
|
|
* Ruby supports two forms of objectified methods. Class
|
|
* <code>Method</code> is used to represent methods that are associated
|
|
* with a particular object: these method objects are bound to that
|
|
* object. Bound method objects for an object can be created using
|
|
* <code>Object#method</code>.
|
|
*
|
|
* Ruby also supports unbound methods; methods objects that are not
|
|
* associated with a particular object. These can be created either by
|
|
* calling <code>Module#instance_method</code> or by calling
|
|
* <code>unbind</code> on a bound method object. The result of both of
|
|
* these is an <code>UnboundMethod</code> object.
|
|
*
|
|
* Unbound methods can only be called after they are bound to an
|
|
* object. That object must be be a kind_of? the method's original
|
|
* class.
|
|
*
|
|
* class Square
|
|
* def area
|
|
* @side * @side
|
|
* end
|
|
* def initialize(side)
|
|
* @side = side
|
|
* end
|
|
* end
|
|
*
|
|
* area_un = Square.instance_method(:area)
|
|
*
|
|
* s = Square.new(12)
|
|
* area = area_un.bind(s)
|
|
* area.call #=> 144
|
|
*
|
|
* Unbound methods are a reference to the method at the time it was
|
|
* objectified: subsequent changes to the underlying class will not
|
|
* affect the unbound method.
|
|
*
|
|
* class Test
|
|
* def test
|
|
* :original
|
|
* end
|
|
* end
|
|
* um = Test.instance_method(:test)
|
|
* class Test
|
|
* def test
|
|
* :modified
|
|
* end
|
|
* end
|
|
* t = Test.new
|
|
* t.test #=> :modified
|
|
* um.bind(t).call #=> :original
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* call-seq:
|
|
* umeth.bind(obj) -> method
|
|
*
|
|
* Bind <i>umeth</i> to <i>obj</i>. If <code>Klass</code> was the class
|
|
* from which <i>umeth</i> was obtained,
|
|
* <code>obj.kind_of?(Klass)</code> must be true.
|
|
*
|
|
* class A
|
|
* def test
|
|
* puts "In test, class = #{self.class}"
|
|
* end
|
|
* end
|
|
* class B < A
|
|
* end
|
|
* class C < B
|
|
* end
|
|
*
|
|
*
|
|
* um = B.instance_method(:test)
|
|
* bm = um.bind(C.new)
|
|
* bm.call
|
|
* bm = um.bind(B.new)
|
|
* bm.call
|
|
* bm = um.bind(A.new)
|
|
* bm.call
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* In test, class = C
|
|
* In test, class = B
|
|
* prog.rb:16:in `bind': bind argument must be an instance of B (TypeError)
|
|
* from prog.rb:16
|
|
*/
|
|
|
|
static VALUE
|
|
umethod_bind(VALUE method, VALUE recv)
|
|
{
|
|
struct METHOD *data, *bound;
|
|
VALUE rklass = CLASS_OF(recv);
|
|
|
|
Data_Get_Struct(method, struct METHOD, data);
|
|
if (data->rklass != rklass) {
|
|
if (FL_TEST(data->rklass, FL_SINGLETON)) {
|
|
rb_raise(rb_eTypeError, "singleton method bound for a different object");
|
|
}
|
|
if (TYPE(data->rklass) == T_MODULE) {
|
|
st_table *m_tbl = RCLASS(data->rklass)->m_tbl;
|
|
while (RCLASS(rklass)->m_tbl != m_tbl) {
|
|
rklass = RCLASS(rklass)->super;
|
|
if (!rklass) goto not_instace;
|
|
}
|
|
}
|
|
else if (!rb_obj_is_kind_of(recv, data->rklass)) {
|
|
not_instace:
|
|
rb_raise(rb_eTypeError, "bind argument must be an instance of %s",
|
|
rb_class2name(data->rklass));
|
|
}
|
|
}
|
|
|
|
method = Data_Make_Struct(rb_cMethod,struct METHOD,bm_mark,free,bound);
|
|
*bound = *data;
|
|
bound->recv = recv;
|
|
bound->rklass = rklass;
|
|
|
|
return method;
|
|
}
|
|
|
|
int
|
|
rb_node_arity(NODE *body)
|
|
{
|
|
int n;
|
|
|
|
switch (nd_type(body)) {
|
|
case NODE_CFUNC:
|
|
if (body->nd_argc < 0) return -1;
|
|
return body->nd_argc;
|
|
case NODE_ZSUPER:
|
|
return -1;
|
|
case NODE_ATTRSET:
|
|
return 1;
|
|
case NODE_IVAR:
|
|
return 0;
|
|
case NODE_BMETHOD:
|
|
return rb_proc_arity(body->nd_cval);
|
|
case NODE_SCOPE:
|
|
body = body->nd_next; /* skip NODE_SCOPE */
|
|
if (nd_type(body) == NODE_BLOCK)
|
|
body = body->nd_head;
|
|
if (!body) return 0;
|
|
n = body->nd_frml ? RARRAY(body->nd_frml)->len : 0;
|
|
if (body->nd_opt)
|
|
return -n-1;
|
|
if (body->nd_rest) {
|
|
if (nd_type(body->nd_rest) == NODE_POSTARG) {
|
|
return -n-1-body->nd_rest->nd_head->nd_alen;
|
|
}
|
|
n = -n-1;
|
|
}
|
|
return n;
|
|
default:
|
|
rb_raise(rb_eArgError, "invalid node 0x%x", nd_type(body));
|
|
}
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* meth.arity => fixnum
|
|
*
|
|
* Returns an indication of the number of arguments accepted by a
|
|
* method. Returns a nonnegative integer for methods that take a fixed
|
|
* number of arguments. For Ruby methods that take a variable number of
|
|
* arguments, returns -n-1, where n is the number of required
|
|
* arguments. For methods written in C, returns -1 if the call takes a
|
|
* variable number of arguments.
|
|
*
|
|
* class C
|
|
* def one; end
|
|
* def two(a); end
|
|
* def three(*a); end
|
|
* def four(a, b); end
|
|
* def five(a, b, *c); end
|
|
* def six(a, b, *c, &d); end
|
|
* end
|
|
* c = C.new
|
|
* c.method(:one).arity #=> 0
|
|
* c.method(:two).arity #=> 1
|
|
* c.method(:three).arity #=> -1
|
|
* c.method(:four).arity #=> 2
|
|
* c.method(:five).arity #=> -3
|
|
* c.method(:six).arity #=> -3
|
|
*
|
|
* "cat".method(:size).arity #=> 0
|
|
* "cat".method(:replace).arity #=> 1
|
|
* "cat".method(:squeeze).arity #=> -1
|
|
* "cat".method(:count).arity #=> -1
|
|
*/
|
|
|
|
static VALUE
|
|
method_arity_m(VALUE method)
|
|
{
|
|
int n = method_arity(method);
|
|
return INT2FIX(n);
|
|
}
|
|
|
|
static int
|
|
method_arity(VALUE method)
|
|
{
|
|
struct METHOD *data;
|
|
|
|
Data_Get_Struct(method, struct METHOD, data);
|
|
return rb_node_arity(data->body);
|
|
}
|
|
|
|
int
|
|
rb_mod_method_arity(VALUE mod, ID id)
|
|
{
|
|
NODE *node = rb_method_node(mod, id);
|
|
return rb_node_arity(node);
|
|
}
|
|
|
|
int
|
|
rb_obj_method_arity(VALUE obj, ID id)
|
|
{
|
|
return rb_mod_method_arity(CLASS_OF(obj), id);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* meth.to_s => string
|
|
* meth.inspect => string
|
|
*
|
|
* Show the name of the underlying method.
|
|
*
|
|
* "cat".method(:count).inspect #=> "#<Method: String#count>"
|
|
*/
|
|
|
|
static VALUE
|
|
method_inspect(VALUE method)
|
|
{
|
|
struct METHOD *data;
|
|
VALUE str;
|
|
const char *s;
|
|
const char *sharp = "#";
|
|
|
|
Data_Get_Struct(method, struct METHOD, data);
|
|
str = rb_str_buf_new2("#<");
|
|
s = rb_obj_classname(method);
|
|
rb_str_buf_cat2(str, s);
|
|
rb_str_buf_cat2(str, ": ");
|
|
|
|
if (FL_TEST(data->klass, FL_SINGLETON)) {
|
|
VALUE v = rb_iv_get(data->klass, "__attached__");
|
|
|
|
if (data->recv == Qundef) {
|
|
rb_str_buf_append(str, rb_inspect(data->klass));
|
|
}
|
|
else if (data->recv == v) {
|
|
rb_str_buf_append(str, rb_inspect(v));
|
|
sharp = ".";
|
|
}
|
|
else {
|
|
rb_str_buf_append(str, rb_inspect(data->recv));
|
|
rb_str_buf_cat2(str, "(");
|
|
rb_str_buf_append(str, rb_inspect(v));
|
|
rb_str_buf_cat2(str, ")");
|
|
sharp = ".";
|
|
}
|
|
}
|
|
else {
|
|
rb_str_buf_cat2(str, rb_class2name(data->rklass));
|
|
if (data->rklass != data->klass) {
|
|
rb_str_buf_cat2(str, "(");
|
|
rb_str_buf_cat2(str, rb_class2name(data->klass));
|
|
rb_str_buf_cat2(str, ")");
|
|
}
|
|
}
|
|
rb_str_buf_cat2(str, sharp);
|
|
rb_str_buf_cat2(str, rb_id2name(data->oid));
|
|
rb_str_buf_cat2(str, ">");
|
|
|
|
return str;
|
|
}
|
|
|
|
static VALUE
|
|
mproc(VALUE method)
|
|
{
|
|
VALUE proc;
|
|
|
|
proc = rb_block_proc();
|
|
proc_delete_safe_level(proc);
|
|
return proc;
|
|
}
|
|
|
|
static VALUE
|
|
bmcall(VALUE args, VALUE method)
|
|
{
|
|
volatile VALUE a;
|
|
VALUE ret;
|
|
|
|
a = svalue_to_avalue(args);
|
|
ret = rb_method_call(RARRAY(a)->len, RARRAY(a)->ptr, method);
|
|
a = Qnil; /* prevent tail call */
|
|
return ret;
|
|
}
|
|
|
|
VALUE
|
|
rb_proc_new(
|
|
VALUE (*func)(ANYARGS), /* VALUE yieldarg[, VALUE procarg] */
|
|
VALUE val)
|
|
{
|
|
struct BLOCK *data;
|
|
VALUE proc = rb_iterate((VALUE(*)(VALUE))mproc, 0, func, val);
|
|
|
|
Data_Get_Struct(proc, struct BLOCK, data);
|
|
data->body->nd_state = YIELD_FUNC_AVALUE;
|
|
return proc;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* meth.to_proc => prc
|
|
*
|
|
* Returns a <code>Proc</code> object corresponding to this method.
|
|
*/
|
|
|
|
static VALUE
|
|
method_proc(VALUE method)
|
|
{
|
|
VALUE proc;
|
|
struct METHOD *mdata;
|
|
struct BLOCK *bdata;
|
|
|
|
Data_Get_Struct(method, struct METHOD, mdata);
|
|
if (nd_type(mdata->body) == NODE_BMETHOD) {
|
|
return mdata->body->nd_cval;
|
|
}
|
|
proc = rb_iterate((VALUE(*)(VALUE))mproc, 0, bmcall, method);
|
|
Data_Get_Struct(proc, struct BLOCK, bdata);
|
|
bdata->body->nd_file = mdata->body->nd_file;
|
|
nd_set_line(bdata->body, nd_line(mdata->body));
|
|
bdata->body->nd_state = YIELD_FUNC_SVALUE;
|
|
bdata->flags |= BLOCK_FROM_METHOD;
|
|
|
|
return proc;
|
|
}
|
|
|
|
static VALUE
|
|
rb_obj_is_method(VALUE m)
|
|
{
|
|
if (TYPE(m) == T_DATA && RDATA(m)->dmark == (RUBY_DATA_FUNC)bm_mark) {
|
|
return Qtrue;
|
|
}
|
|
return Qfalse;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* define_method(symbol, method) => new_method
|
|
* define_method(symbol) { block } => proc
|
|
*
|
|
* Defines an instance method in the receiver. The _method_
|
|
* parameter can be a +Proc+ or +Method+ object.
|
|
* If a block is specified, it is used as the method body. This block
|
|
* is evaluated using <code>instance_eval</code>, a point that is
|
|
* tricky to demonstrate because <code>define_method</code> is private.
|
|
* (This is why we resort to the +send+ hack in this example.)
|
|
*
|
|
* class A
|
|
* def fred
|
|
* puts "In Fred"
|
|
* end
|
|
* def create_method(name, &block)
|
|
* self.class.send(:define_method, name, &block)
|
|
* end
|
|
* define_method(:wilma) { puts "Charge it!" }
|
|
* end
|
|
* class B < A
|
|
* define_method(:barney, instance_method(:fred))
|
|
* end
|
|
* a = B.new
|
|
* a.barney
|
|
* a.wilma
|
|
* a.create_method(:betty) { p self }
|
|
* a.betty
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* In Fred
|
|
* Charge it!
|
|
* #<B:0x401b39e8>
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_define_method(int argc, VALUE *argv, VALUE mod)
|
|
{
|
|
ID id;
|
|
VALUE body;
|
|
NODE *node;
|
|
int noex;
|
|
|
|
if (argc == 1) {
|
|
id = rb_to_id(argv[0]);
|
|
body = proc_lambda();
|
|
}
|
|
else if (argc == 2) {
|
|
id = rb_to_id(argv[0]);
|
|
body = argv[1];
|
|
if (!rb_obj_is_method(body) && !rb_obj_is_proc(body)) {
|
|
rb_raise(rb_eTypeError, "wrong argument type %s (expected Proc/Method)",
|
|
rb_obj_classname(body));
|
|
}
|
|
}
|
|
else {
|
|
rb_raise(rb_eArgError, "wrong number of arguments (%d for 1)", argc);
|
|
}
|
|
if (RDATA(body)->dmark == (RUBY_DATA_FUNC)bm_mark) {
|
|
struct METHOD *method = (struct METHOD *)DATA_PTR(body);
|
|
VALUE rklass = method->rklass;
|
|
if (rklass != mod) {
|
|
if (FL_TEST(rklass, FL_SINGLETON)) {
|
|
rb_raise(rb_eTypeError, "can't bind singleton method to a different class");
|
|
}
|
|
if (!RTEST(rb_class_inherited_p(mod, rklass))) {
|
|
rb_raise(rb_eTypeError, "bind argument must be a subclass of %s",
|
|
rb_class2name(rklass));
|
|
}
|
|
}
|
|
node = method->body;
|
|
}
|
|
else if (RDATA(body)->dmark == (RUBY_DATA_FUNC)blk_mark) {
|
|
struct BLOCK *block;
|
|
|
|
body = proc_clone(body);
|
|
proc_delete_safe_level(body);
|
|
Data_Get_Struct(body, struct BLOCK, block);
|
|
block->frame.callee = id;
|
|
block->frame.this_func = id;
|
|
block->frame.this_class = mod;
|
|
node = NEW_BMETHOD(body);
|
|
}
|
|
else {
|
|
/* type error */
|
|
rb_raise(rb_eTypeError, "wrong argument type (expected Proc/Method)");
|
|
}
|
|
|
|
if (VIS_TEST(VIS_PRIVATE)) {
|
|
noex = NOEX_PRIVATE;
|
|
}
|
|
else if (VIS_TEST(VIS_PROTECTED)) {
|
|
noex = NOEX_PROTECTED;
|
|
}
|
|
else {
|
|
noex = NOEX_PUBLIC;
|
|
}
|
|
rb_add_method(mod, id, node, noex);
|
|
return body;
|
|
}
|
|
|
|
/*
|
|
* <code>Proc</code> objects are blocks of code that have been bound to
|
|
* a set of local variables. Once bound, the code may be called in
|
|
* different contexts and still access those variables.
|
|
*
|
|
* def gen_times(factor)
|
|
* return Proc.new {|n| n*factor }
|
|
* end
|
|
*
|
|
* times3 = gen_times(3)
|
|
* times5 = gen_times(5)
|
|
*
|
|
* times3.call(12) #=> 36
|
|
* times5.call(5) #=> 25
|
|
* times3.call(times5.call(4)) #=> 60
|
|
*
|
|
*/
|
|
|
|
void
|
|
Init_Proc(void)
|
|
{
|
|
rb_eLocalJumpError = rb_define_class("LocalJumpError", rb_eStandardError);
|
|
rb_define_method(rb_eLocalJumpError, "exit_value", localjump_xvalue, 0);
|
|
rb_define_method(rb_eLocalJumpError, "reason", localjump_reason, 0);
|
|
|
|
rb_global_variable(&exception_error);
|
|
exception_error = rb_exc_new2(rb_eFatal, "exception reentered");
|
|
|
|
rb_eSysStackError = rb_define_class("SystemStackError", rb_eException);
|
|
rb_global_variable(&sysstack_error);
|
|
sysstack_error = rb_exc_new2(rb_eSysStackError, "stack level too deep");
|
|
OBJ_TAINT(sysstack_error);
|
|
|
|
rb_cProc = rb_define_class("Proc", rb_cObject);
|
|
rb_undef_alloc_func(rb_cProc);
|
|
rb_define_singleton_method(rb_cProc, "new", proc_s_new, -1);
|
|
|
|
rb_define_method(rb_cProc, "clone", proc_clone, 0);
|
|
rb_define_method(rb_cProc, "dup", proc_dup, 0);
|
|
rb_define_method(rb_cProc, "call", rb_proc_call, -2);
|
|
rb_define_method(rb_cProc, "yield", rb_proc_yield, -1);
|
|
rb_define_method(rb_cProc, "arity", proc_arity, 0);
|
|
rb_define_method(rb_cProc, "[]", rb_proc_call, -2);
|
|
rb_define_method(rb_cProc, "==", proc_eq, 1);
|
|
rb_define_method(rb_cProc, "eql?", proc_eq, 1);
|
|
rb_define_method(rb_cProc, "hash", proc_hash, 0);
|
|
rb_define_method(rb_cProc, "to_s", proc_to_s, 0);
|
|
rb_define_method(rb_cProc, "to_proc", proc_to_self, 0);
|
|
rb_define_method(rb_cProc, "binding", proc_binding, 0);
|
|
|
|
rb_define_global_function("proc", rb_block_proc, 0);
|
|
rb_define_global_function("lambda", proc_lambda, 0);
|
|
|
|
rb_define_method(rb_cNilClass, "yield", nil_yield, -1);
|
|
|
|
rb_cMethod = rb_define_class("Method", rb_cObject);
|
|
rb_undef_alloc_func(rb_cMethod);
|
|
rb_undef_method(CLASS_OF(rb_cMethod), "new");
|
|
rb_define_method(rb_cMethod, "==", method_eq, 1);
|
|
rb_define_method(rb_cMethod, "eql?", method_eq, 1);
|
|
rb_define_method(rb_cMethod, "hash", method_hash, 0);
|
|
rb_define_method(rb_cMethod, "clone", method_clone, 0);
|
|
rb_define_method(rb_cMethod, "call", rb_method_call, -1);
|
|
rb_define_method(rb_cMethod, "[]", rb_method_call, -1);
|
|
rb_define_method(rb_cMethod, "arity", method_arity_m, 0);
|
|
rb_define_method(rb_cMethod, "inspect", method_inspect, 0);
|
|
rb_define_method(rb_cMethod, "to_s", method_inspect, 0);
|
|
rb_define_method(rb_cMethod, "to_proc", method_proc, 0);
|
|
rb_define_method(rb_cMethod, "unbind", method_unbind, 0);
|
|
rb_define_method(rb_mKernel, "method", rb_obj_method, 1);
|
|
|
|
rb_cUnboundMethod = rb_define_class("UnboundMethod", rb_cObject);
|
|
rb_undef_alloc_func(rb_cUnboundMethod);
|
|
rb_undef_method(CLASS_OF(rb_cUnboundMethod), "new");
|
|
rb_define_method(rb_cUnboundMethod, "==", method_eq, 1);
|
|
rb_define_method(rb_cUnboundMethod, "eql?", method_eq, 1);
|
|
rb_define_method(rb_cUnboundMethod, "hash", method_hash, 0);
|
|
rb_define_method(rb_cUnboundMethod, "clone", method_clone, 0);
|
|
rb_define_method(rb_cUnboundMethod, "arity", method_arity_m, 0);
|
|
rb_define_method(rb_cUnboundMethod, "inspect", method_inspect, 0);
|
|
rb_define_method(rb_cUnboundMethod, "to_s", method_inspect, 0);
|
|
rb_define_method(rb_cUnboundMethod, "bind", umethod_bind, 1);
|
|
rb_define_method(rb_cModule, "instance_method", rb_mod_method, 1);
|
|
}
|
|
|
|
/*
|
|
* Objects of class <code>Binding</code> encapsulate the execution
|
|
* context at some particular place in the code and retain this context
|
|
* for future use. The variables, methods, value of <code>self</code>,
|
|
* and possibly an iterator block that can be accessed in this context
|
|
* are all retained. Binding objects can be created using
|
|
* <code>Kernel#binding</code>, and are made available to the callback
|
|
* of <code>Kernel#set_trace_func</code>.
|
|
*
|
|
* These binding objects can be passed as the second argument of the
|
|
* <code>Kernel#eval</code> method, establishing an environment for the
|
|
* evaluation.
|
|
*
|
|
* class Demo
|
|
* def initialize(n)
|
|
* @secret = n
|
|
* end
|
|
* def getBinding
|
|
* return binding()
|
|
* end
|
|
* end
|
|
*
|
|
* k1 = Demo.new(99)
|
|
* b1 = k1.getBinding
|
|
* k2 = Demo.new(-3)
|
|
* b2 = k2.getBinding
|
|
*
|
|
* eval("@secret", b1) #=> 99
|
|
* eval("@secret", b2) #=> -3
|
|
* eval("@secret") #=> nil
|
|
*
|
|
* Binding objects have no class-specific methods.
|
|
*
|
|
*/
|
|
|
|
void
|
|
Init_Binding(void)
|
|
{
|
|
rb_cBinding = rb_define_class("Binding", rb_cObject);
|
|
rb_undef_alloc_func(rb_cBinding);
|
|
rb_undef_method(CLASS_OF(rb_cBinding), "new");
|
|
rb_define_method(rb_cBinding, "clone", proc_clone, 0);
|
|
rb_define_method(rb_cBinding, "dup", proc_dup, 0);
|
|
rb_define_method(rb_cBinding, "eval", bind_eval, -1);
|
|
rb_define_global_function("binding", rb_f_binding, 0);
|
|
}
|
|
|
|
/* Windows SEH refers data on the stack. */
|
|
#undef SAVE_WIN32_EXCEPTION_LIST
|
|
#if defined _WIN32 || defined __CYGWIN__
|
|
#if defined __CYGWIN__
|
|
typedef unsigned long DWORD;
|
|
#endif
|
|
|
|
static inline DWORD
|
|
win32_get_exception_list(void)
|
|
{
|
|
DWORD p;
|
|
# if defined _MSC_VER
|
|
# ifdef _M_IX86
|
|
# define SAVE_WIN32_EXCEPTION_LIST
|
|
# if _MSC_VER >= 1310
|
|
/* warning: unsafe assignment to fs:0 ... this is ok */
|
|
# pragma warning(disable: 4733)
|
|
# endif
|
|
__asm mov eax, fs:[0];
|
|
__asm mov p, eax;
|
|
# endif
|
|
# elif defined __GNUC__
|
|
# ifdef __i386__
|
|
# define SAVE_WIN32_EXCEPTION_LIST
|
|
__asm__("movl %%fs:0,%0" : "=r"(p));
|
|
# endif
|
|
# elif defined __BORLANDC__
|
|
# define SAVE_WIN32_EXCEPTION_LIST
|
|
__emit__(0x64, 0xA1, 0, 0, 0, 0); /* mov eax, fs:[0] */
|
|
p = _EAX;
|
|
# endif
|
|
return p;
|
|
}
|
|
|
|
static inline void
|
|
win32_set_exception_list(DWORD p)
|
|
{
|
|
# if defined _MSC_VER
|
|
# ifdef _M_IX86
|
|
__asm mov eax, p;
|
|
__asm mov fs:[0], eax;
|
|
# endif
|
|
# elif defined __GNUC__
|
|
# ifdef __i386__
|
|
__asm__("movl %0,%%fs:0" :: "r"(p));
|
|
# endif
|
|
# elif defined __BORLANDC__
|
|
_EAX = p;
|
|
__emit__(0x64, 0xA3, 0, 0, 0, 0); /* mov fs:[0], eax */
|
|
# endif
|
|
}
|
|
|
|
#if !defined SAVE_WIN32_EXCEPTION_LIST && !defined _WIN32_WCE
|
|
# error unsupported platform
|
|
#endif
|
|
#endif
|
|
|
|
int rb_thread_pending = 0;
|
|
|
|
VALUE rb_cThread;
|
|
|
|
extern VALUE rb_last_status;
|
|
|
|
enum thread_status {
|
|
THREAD_TO_KILL,
|
|
THREAD_RUNNABLE,
|
|
THREAD_STOPPED,
|
|
THREAD_KILLED,
|
|
};
|
|
|
|
#define WAIT_FD (1<<0)
|
|
#define WAIT_SELECT (1<<1)
|
|
#define WAIT_TIME (1<<2)
|
|
#define WAIT_JOIN (1<<3)
|
|
#define WAIT_PID (1<<4)
|
|
|
|
/* +infty, for this purpose */
|
|
#define DELAY_INFTY 1E30
|
|
|
|
#if !defined HAVE_PAUSE
|
|
# if defined _WIN32 && !defined __CYGWIN__
|
|
# define pause() Sleep(INFINITE)
|
|
# else
|
|
# define pause() sleep(0x7fffffff)
|
|
# endif
|
|
#endif
|
|
|
|
#if defined(NFDBITS) && defined(HAVE_RB_FD_INIT)
|
|
void
|
|
rb_fd_init(volatile rb_fdset_t *fds)
|
|
{
|
|
fds->maxfd = 0;
|
|
fds->fdset = ALLOC(fd_set);
|
|
FD_ZERO(fds->fdset);
|
|
}
|
|
|
|
void
|
|
rb_fd_term(rb_fdset_t *fds)
|
|
{
|
|
if (fds->fdset) free(fds->fdset);
|
|
fds->maxfd = 0;
|
|
fds->fdset = 0;
|
|
}
|
|
|
|
void
|
|
rb_fd_zero(rb_fdset_t *fds)
|
|
{
|
|
if (fds->fdset) {
|
|
MEMZERO(fds->fdset, fd_mask, howmany(fds->maxfd, NFDBITS));
|
|
FD_ZERO(fds->fdset);
|
|
}
|
|
}
|
|
|
|
static void
|
|
rb_fd_resize(int n, rb_fdset_t *fds)
|
|
{
|
|
int m = howmany(n + 1, NFDBITS) * sizeof(fd_mask);
|
|
int o = howmany(fds->maxfd, NFDBITS) * sizeof(fd_mask);
|
|
|
|
if (m < sizeof(fd_set)) m = sizeof(fd_set);
|
|
if (o < sizeof(fd_set)) o = sizeof(fd_set);
|
|
|
|
if (m > o) {
|
|
fds->fdset = realloc(fds->fdset, m);
|
|
memset((char *)fds->fdset + o, 0, m - o);
|
|
}
|
|
if (n >= fds->maxfd) fds->maxfd = n + 1;
|
|
}
|
|
|
|
void
|
|
rb_fd_set(int n, rb_fdset_t *fds)
|
|
{
|
|
rb_fd_resize(n, fds);
|
|
FD_SET(n, fds->fdset);
|
|
}
|
|
|
|
void
|
|
rb_fd_clr(int n, rb_fdset_t *fds)
|
|
{
|
|
if (n >= fds->maxfd) return;
|
|
FD_CLR(n, fds->fdset);
|
|
}
|
|
|
|
int
|
|
rb_fd_isset(int n, const rb_fdset_t *fds)
|
|
{
|
|
if (n >= fds->maxfd) return 0;
|
|
return FD_ISSET(n, fds->fdset) != 0; /* "!= 0" avoids FreeBSD PR 91421 */
|
|
}
|
|
|
|
void
|
|
rb_fd_copy(rb_fdset_t *dst, const fd_set *src, int max)
|
|
{
|
|
int size = howmany(max, NFDBITS) * sizeof(fd_mask);
|
|
|
|
if (size < sizeof(fd_set)) size = sizeof(fd_set);
|
|
dst->maxfd = max;
|
|
dst->fdset = realloc(dst->fdset, size);
|
|
memcpy(dst->fdset, src, size);
|
|
}
|
|
|
|
int
|
|
rb_fd_select(int n, rb_fdset_t *readfds, rb_fdset_t *writefds, rb_fdset_t *exceptfds, struct timeval *timeout)
|
|
{
|
|
rb_fd_resize(n - 1, readfds);
|
|
rb_fd_resize(n - 1, writefds);
|
|
rb_fd_resize(n - 1, exceptfds);
|
|
return select(n, rb_fd_ptr(readfds), rb_fd_ptr(writefds), rb_fd_ptr(exceptfds), timeout);
|
|
}
|
|
|
|
#undef FD_ZERO
|
|
#undef FD_SET
|
|
#undef FD_CLR
|
|
#undef FD_ISSET
|
|
|
|
#define FD_ZERO(f) rb_fd_zero(f)
|
|
#define FD_SET(i, f) rb_fd_set(i, f)
|
|
#define FD_CLR(i, f) rb_fd_clr(i, f)
|
|
#define FD_ISSET(i, f) rb_fd_isset(i, f)
|
|
|
|
#endif
|
|
|
|
/* typedef struct thread * rb_thread_t; */
|
|
|
|
struct thread {
|
|
struct thread *next, *prev;
|
|
rb_jmpbuf_t context;
|
|
#ifdef SAVE_WIN32_EXCEPTION_LIST
|
|
DWORD win32_exception_list;
|
|
#endif
|
|
|
|
VALUE result;
|
|
|
|
long stk_len;
|
|
long stk_max;
|
|
VALUE *stk_ptr;
|
|
VALUE *stk_pos;
|
|
#ifdef __ia64
|
|
long bstr_len;
|
|
long bstr_max;
|
|
VALUE *bstr_ptr;
|
|
VALUE *bstr_pos;
|
|
#endif
|
|
|
|
struct FRAME *frame;
|
|
struct SCOPE *scope;
|
|
struct RVarmap *dyna_vars;
|
|
struct BLOCK *block;
|
|
struct iter *iter;
|
|
struct tag *tag;
|
|
VALUE wrapper;
|
|
NODE *cref;
|
|
struct ruby_env *anchor;
|
|
|
|
int flags; /* misc. states (rb_trap_immediate/raised) */
|
|
|
|
NODE *node;
|
|
|
|
int tracing;
|
|
VALUE errinfo;
|
|
VALUE last_status;
|
|
VALUE last_line;
|
|
VALUE last_match;
|
|
|
|
int safe;
|
|
|
|
enum thread_status status;
|
|
int wait_for;
|
|
int fd;
|
|
rb_fdset_t readfds;
|
|
rb_fdset_t writefds;
|
|
rb_fdset_t exceptfds;
|
|
int select_value;
|
|
double delay;
|
|
rb_thread_t join;
|
|
|
|
int abort;
|
|
int priority;
|
|
VALUE thgroup;
|
|
|
|
st_table *locals;
|
|
|
|
VALUE thread;
|
|
};
|
|
|
|
#define THREAD_RAISED 0x200 /* temporary flag */
|
|
#define THREAD_TERMINATING 0x400 /* persistent flag */
|
|
#define THREAD_FLAGS_MASK 0x400 /* mask for persistent flags */
|
|
|
|
#define FOREACH_THREAD_FROM(f,x) x = f; do { x = x->next;
|
|
#define END_FOREACH_FROM(f,x) } while (x != f)
|
|
|
|
#define FOREACH_THREAD(x) FOREACH_THREAD_FROM(curr_thread,x)
|
|
#define END_FOREACH(x) END_FOREACH_FROM(curr_thread,x)
|
|
|
|
struct thread_status_t {
|
|
NODE *node;
|
|
|
|
int tracing;
|
|
VALUE errinfo;
|
|
VALUE last_status;
|
|
VALUE last_line;
|
|
VALUE last_match;
|
|
|
|
int safe;
|
|
|
|
enum thread_status status;
|
|
int wait_for;
|
|
int fd;
|
|
rb_fdset_t readfds;
|
|
rb_fdset_t writefds;
|
|
rb_fdset_t exceptfds;
|
|
int select_value;
|
|
double delay;
|
|
rb_thread_t join;
|
|
};
|
|
|
|
#define THREAD_COPY_STATUS(src, dst) (void)( \
|
|
(dst)->node = (src)->node, \
|
|
\
|
|
(dst)->tracing = (src)->tracing, \
|
|
(dst)->errinfo = (src)->errinfo, \
|
|
(dst)->last_status = (src)->last_status, \
|
|
(dst)->last_line = (src)->last_line, \
|
|
(dst)->last_match = (src)->last_match, \
|
|
\
|
|
(dst)->safe = (src)->safe, \
|
|
\
|
|
(dst)->status = (src)->status, \
|
|
(dst)->wait_for = (src)->wait_for, \
|
|
(dst)->fd = (src)->fd, \
|
|
(dst)->readfds = (src)->readfds, \
|
|
(dst)->writefds = (src)->writefds, \
|
|
(dst)->exceptfds = (src)->exceptfds, \
|
|
rb_fd_init(&(src)->readfds), \
|
|
rb_fd_init(&(src)->writefds), \
|
|
rb_fd_init(&(src)->exceptfds), \
|
|
(dst)->select_value = (src)->select_value, \
|
|
(dst)->delay = (src)->delay, \
|
|
(dst)->join = (src)->join, \
|
|
0)
|
|
|
|
static int
|
|
thread_set_raised(void)
|
|
{
|
|
if (curr_thread->flags & THREAD_RAISED) return 1;
|
|
curr_thread->flags |= THREAD_RAISED;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
thread_reset_raised(void)
|
|
{
|
|
if (!(curr_thread->flags & THREAD_RAISED)) return 0;
|
|
curr_thread->flags &= ~THREAD_RAISED;
|
|
return 1;
|
|
}
|
|
|
|
static void rb_thread_ready(rb_thread_t);
|
|
|
|
static VALUE
|
|
run_trap_eval(VALUE arg)
|
|
{
|
|
VALUE *p = (VALUE *)arg;
|
|
return rb_eval_cmd(p[0], p[1], (int)p[2]);
|
|
}
|
|
|
|
static VALUE
|
|
rb_trap_eval(VALUE cmd, int sig, int safe)
|
|
{
|
|
int state;
|
|
VALUE val = Qnil; /* OK */
|
|
volatile struct thread_status_t save;
|
|
VALUE arg[3];
|
|
|
|
arg[0] = cmd;
|
|
arg[1] = rb_ary_new3(1, INT2FIX(sig));
|
|
arg[2] = (VALUE)safe;
|
|
THREAD_COPY_STATUS(curr_thread, &save);
|
|
rb_thread_ready(curr_thread);
|
|
val = rb_protect(run_trap_eval, (VALUE)&arg, &state);
|
|
THREAD_COPY_STATUS(&save, curr_thread);
|
|
|
|
if (state) {
|
|
rb_trap_immediate = 0;
|
|
rb_thread_ready(curr_thread);
|
|
JUMP_TAG(state);
|
|
}
|
|
|
|
if (curr_thread->status == THREAD_STOPPED) {
|
|
rb_thread_schedule();
|
|
}
|
|
errno = EINTR;
|
|
|
|
return val;
|
|
}
|
|
|
|
static const char *
|
|
thread_status_name(enum thread_status status)
|
|
{
|
|
switch (status) {
|
|
case THREAD_RUNNABLE:
|
|
return "run";
|
|
case THREAD_STOPPED:
|
|
return "sleep";
|
|
case THREAD_TO_KILL:
|
|
return "aborting";
|
|
case THREAD_KILLED:
|
|
return "dead";
|
|
default:
|
|
return "unknown";
|
|
}
|
|
}
|
|
|
|
/* $SAFE accessor */
|
|
void
|
|
rb_set_safe_level(int level)
|
|
{
|
|
if (level > ruby_safe_level) {
|
|
if (level > SAFE_LEVEL_MAX) level = SAFE_LEVEL_MAX;
|
|
ruby_safe_level = level;
|
|
curr_thread->safe = level;
|
|
}
|
|
}
|
|
|
|
static VALUE
|
|
safe_getter(void)
|
|
{
|
|
return INT2NUM(ruby_safe_level);
|
|
}
|
|
|
|
static void
|
|
safe_setter(VALUE val)
|
|
{
|
|
int level = NUM2INT(val);
|
|
|
|
if (level < ruby_safe_level) {
|
|
rb_raise(rb_eSecurityError, "tried to downgrade safe level from %d to %d",
|
|
ruby_safe_level, level);
|
|
}
|
|
if (level > SAFE_LEVEL_MAX) level = SAFE_LEVEL_MAX;
|
|
ruby_safe_level = level;
|
|
curr_thread->safe = level;
|
|
}
|
|
|
|
/* Return the current time as a floating-point number */
|
|
static double
|
|
timeofday(void)
|
|
{
|
|
struct timeval tv;
|
|
gettimeofday(&tv, NULL);
|
|
return (double)tv.tv_sec + (double)tv.tv_usec * 1e-6;
|
|
}
|
|
|
|
#define STACK(addr) (th->stk_pos<(VALUE*)(addr) && (VALUE*)(addr)<th->stk_pos+th->stk_len)
|
|
#define ADJ(addr) (void*)(STACK(addr)?(((VALUE*)(addr)-th->stk_pos)+th->stk_ptr):(VALUE*)(addr))
|
|
|
|
static void
|
|
thread_mark(rb_thread_t th)
|
|
{
|
|
struct FRAME *frame;
|
|
struct BLOCK *block;
|
|
|
|
rb_gc_mark(th->result);
|
|
rb_gc_mark(th->thread);
|
|
if (th->join) rb_gc_mark(th->join->thread);
|
|
|
|
rb_gc_mark(th->wrapper);
|
|
rb_gc_mark((VALUE)th->cref);
|
|
|
|
rb_gc_mark((VALUE)th->scope);
|
|
rb_gc_mark((VALUE)th->dyna_vars);
|
|
rb_gc_mark(th->errinfo);
|
|
rb_gc_mark(th->last_status);
|
|
rb_gc_mark(th->last_line);
|
|
rb_gc_mark(th->last_match);
|
|
rb_mark_tbl(th->locals);
|
|
rb_gc_mark(th->thgroup);
|
|
|
|
/* mark data in copied stack */
|
|
if (th == curr_thread) return;
|
|
if (th->status == THREAD_KILLED) return;
|
|
if (th->stk_len == 0) return; /* stack not active, no need to mark. */
|
|
if (th->stk_ptr) {
|
|
rb_gc_mark_locations(th->stk_ptr, th->stk_ptr+th->stk_len);
|
|
#if defined(THINK_C) || defined(__human68k__)
|
|
rb_gc_mark_locations(th->stk_ptr+2, th->stk_ptr+th->stk_len+2);
|
|
#endif
|
|
#ifdef __ia64
|
|
if (th->bstr_ptr) {
|
|
rb_gc_mark_locations(th->bstr_ptr, th->bstr_ptr+th->bstr_len);
|
|
}
|
|
#endif
|
|
}
|
|
frame = th->frame;
|
|
while (frame && frame != top_frame) {
|
|
frame = ADJ(frame);
|
|
rb_gc_mark_frame(frame);
|
|
if (frame->tmp) {
|
|
struct FRAME *tmp = frame->tmp;
|
|
|
|
while (tmp && tmp != top_frame) {
|
|
tmp = ADJ(tmp);
|
|
rb_gc_mark_frame(tmp);
|
|
tmp = tmp->prev;
|
|
}
|
|
}
|
|
frame = frame->prev;
|
|
}
|
|
block = th->block;
|
|
while (block) {
|
|
block = ADJ(block);
|
|
rb_gc_mark_frame(&block->frame);
|
|
block = block->frame.block;
|
|
}
|
|
}
|
|
|
|
static struct {
|
|
rb_thread_t thread;
|
|
VALUE proc, arg;
|
|
} new_thread;
|
|
|
|
static int
|
|
mark_loading_thread(ID key, VALUE value, int lev)
|
|
{
|
|
rb_gc_mark(((rb_thread_t)value)->thread);
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
void
|
|
rb_gc_mark_threads(void)
|
|
{
|
|
rb_thread_t th;
|
|
|
|
/* static global mark */
|
|
rb_gc_mark((VALUE)ruby_cref);
|
|
|
|
if (!curr_thread) return;
|
|
rb_gc_mark(main_thread->thread);
|
|
rb_gc_mark(curr_thread->thread);
|
|
FOREACH_THREAD_FROM(main_thread, th) {
|
|
switch (th->status) {
|
|
case THREAD_TO_KILL:
|
|
case THREAD_RUNNABLE:
|
|
break;
|
|
case THREAD_STOPPED:
|
|
if (th->wait_for) break;
|
|
default:
|
|
continue;
|
|
}
|
|
rb_gc_mark(th->thread);
|
|
} END_FOREACH_FROM(main_thread, th);
|
|
if (new_thread.thread) {
|
|
rb_gc_mark(new_thread.thread->thread);
|
|
rb_gc_mark(new_thread.proc);
|
|
rb_gc_mark(new_thread.arg);
|
|
}
|
|
if (loading_tbl) st_foreach(loading_tbl, mark_loading_thread, 0);
|
|
}
|
|
|
|
void
|
|
rb_gc_abort_threads(void)
|
|
{
|
|
rb_thread_t th;
|
|
|
|
if (!main_thread)
|
|
return;
|
|
|
|
FOREACH_THREAD_FROM(main_thread, th) {
|
|
if (FL_TEST(th->thread, FL_MARK)) continue;
|
|
if (th->status == THREAD_STOPPED) {
|
|
th->status = THREAD_TO_KILL;
|
|
rb_gc_mark(th->thread);
|
|
}
|
|
} END_FOREACH_FROM(main_thread, th);
|
|
}
|
|
|
|
static void
|
|
thread_free(rb_thread_t th)
|
|
{
|
|
if (th->stk_ptr) free(th->stk_ptr);
|
|
th->stk_ptr = 0;
|
|
#ifdef __ia64
|
|
if (th->bstr_ptr) free(th->bstr_ptr);
|
|
th->bstr_ptr = 0;
|
|
#endif
|
|
if (th->locals) st_free_table(th->locals);
|
|
if (th->status != THREAD_KILLED) {
|
|
if (th->prev) th->prev->next = th->next;
|
|
if (th->next) th->next->prev = th->prev;
|
|
}
|
|
rb_fd_term(&th->readfds);
|
|
rb_fd_term(&th->writefds);
|
|
rb_fd_term(&th->exceptfds);
|
|
if (th != main_thread) free(th);
|
|
}
|
|
|
|
static rb_thread_t
|
|
rb_thread_check(VALUE data)
|
|
{
|
|
if (TYPE(data) != T_DATA || RDATA(data)->dmark != (RUBY_DATA_FUNC)thread_mark) {
|
|
rb_raise(rb_eTypeError, "wrong argument type %s (expected Thread)",
|
|
rb_obj_classname(data));
|
|
}
|
|
return (rb_thread_t)RDATA(data)->data;
|
|
}
|
|
|
|
static VALUE rb_thread_raise(int, VALUE*, rb_thread_t);
|
|
|
|
static VALUE th_raise_exception;
|
|
static NODE *th_raise_node;
|
|
static VALUE th_cmd;
|
|
static int th_sig, th_safe;
|
|
static const char *th_signm;
|
|
|
|
#define RESTORE_NORMAL 1
|
|
#define RESTORE_FATAL 2
|
|
#define RESTORE_INTERRUPT 3
|
|
#define RESTORE_TRAP 4
|
|
#define RESTORE_RAISE 5
|
|
#define RESTORE_SIGNAL 6
|
|
#define RESTORE_EXIT 7
|
|
|
|
extern VALUE *rb_gc_stack_start;
|
|
#ifdef __ia64
|
|
extern VALUE *rb_gc_register_stack_start;
|
|
#endif
|
|
|
|
static void
|
|
rb_thread_save_context(rb_thread_t th)
|
|
{
|
|
VALUE *pos;
|
|
int len;
|
|
static VALUE tval;
|
|
|
|
len = ruby_stack_length(&pos);
|
|
th->stk_len = 0;
|
|
th->stk_pos = pos;
|
|
if (len > th->stk_max) {
|
|
VALUE *ptr = realloc(th->stk_ptr, sizeof(VALUE) * len);
|
|
if (!ptr) rb_memerror();
|
|
th->stk_ptr = ptr;
|
|
th->stk_max = len;
|
|
}
|
|
th->stk_len = len;
|
|
FLUSH_REGISTER_WINDOWS;
|
|
MEMCPY(th->stk_ptr, th->stk_pos, VALUE, th->stk_len);
|
|
#ifdef __ia64
|
|
th->bstr_pos = rb_gc_register_stack_start;
|
|
len = (VALUE*)rb_ia64_bsp() - th->bstr_pos;
|
|
th->bstr_len = 0;
|
|
if (len > th->bstr_max) {
|
|
VALUE *ptr = realloc(th->bstr_ptr, sizeof(VALUE) * len);
|
|
if (!ptr) rb_memerror();
|
|
th->bstr_ptr = ptr;
|
|
th->bstr_max = len;
|
|
}
|
|
th->bstr_len = len;
|
|
rb_ia64_flushrs();
|
|
MEMCPY(th->bstr_ptr, th->bstr_pos, VALUE, th->bstr_len);
|
|
#endif
|
|
#ifdef SAVE_WIN32_EXCEPTION_LIST
|
|
th->win32_exception_list = win32_get_exception_list();
|
|
#endif
|
|
|
|
th->frame = ruby_frame;
|
|
th->scope = ruby_scope;
|
|
ruby_scope->flags |= SCOPE_DONT_RECYCLE;
|
|
th->wrapper = ruby_wrapper;
|
|
th->cref = ruby_cref;
|
|
th->dyna_vars = ruby_dyna_vars;
|
|
th->flags &= THREAD_FLAGS_MASK;
|
|
th->flags |= (rb_trap_immediate<<8) | vis_mode;
|
|
th->tag = prot_tag;
|
|
th->tracing = tracing;
|
|
th->errinfo = ruby_errinfo;
|
|
th->last_status = rb_last_status;
|
|
tval = rb_lastline_get();
|
|
rb_lastline_set(th->last_line);
|
|
th->last_line = tval;
|
|
tval = rb_backref_get();
|
|
rb_backref_set(th->last_match);
|
|
th->last_match = tval;
|
|
th->safe = ruby_safe_level;
|
|
|
|
th->node = ruby_current_node;
|
|
}
|
|
|
|
static int
|
|
rb_thread_switch(int n)
|
|
{
|
|
rb_trap_immediate = (curr_thread->flags&(1<<8))?1:0;
|
|
switch (n) {
|
|
case 0:
|
|
return 0;
|
|
case RESTORE_FATAL:
|
|
JUMP_TAG(TAG_FATAL);
|
|
break;
|
|
case RESTORE_INTERRUPT:
|
|
rb_interrupt();
|
|
break;
|
|
case RESTORE_TRAP:
|
|
rb_trap_eval(th_cmd, th_sig, th_safe);
|
|
break;
|
|
case RESTORE_RAISE:
|
|
ruby_frame->callee = 0;
|
|
ruby_frame->this_func = 0;
|
|
ruby_current_node = th_raise_node;
|
|
rb_raise_jump(th_raise_exception);
|
|
break;
|
|
case RESTORE_SIGNAL:
|
|
rb_raise(rb_eSignal, "SIG%s", th_signm);
|
|
break;
|
|
case RESTORE_EXIT:
|
|
ruby_errinfo = th_raise_exception;
|
|
ruby_current_node = th_raise_node;
|
|
if (!rb_obj_is_kind_of(ruby_errinfo, rb_eSystemExit)) {
|
|
terminate_process(EXIT_FAILURE, ruby_errinfo);
|
|
}
|
|
rb_exc_raise(th_raise_exception);
|
|
break;
|
|
case RESTORE_NORMAL:
|
|
default:
|
|
break;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
#define THREAD_SAVE_CONTEXT(th) \
|
|
(rb_thread_switch((FLUSH_REGISTER_WINDOWS, ruby_setjmp(rb_thread_save_context(th), (th)->context))))
|
|
|
|
NORETURN(static void rb_thread_restore_context(rb_thread_t,int));
|
|
NORETURN(NOINLINE(static void rb_thread_restore_context_0(rb_thread_t,int,void*)));
|
|
NORETURN(NOINLINE(static void stack_extend(rb_thread_t, int, VALUE *)));
|
|
|
|
static void
|
|
rb_thread_restore_context_0(rb_thread_t th, int exit, void *vp)
|
|
{
|
|
/* vp prevents tail call */
|
|
static rb_thread_t tmp;
|
|
static int ex;
|
|
static VALUE tval;
|
|
|
|
rb_trap_immediate = 0; /* inhibit interrupts from here */
|
|
ruby_frame = th->frame;
|
|
ruby_scope = th->scope;
|
|
ruby_wrapper = th->wrapper;
|
|
ruby_cref = th->cref;
|
|
vis_mode = th->flags&VIS_MASK;
|
|
ruby_dyna_vars = th->dyna_vars;
|
|
prot_tag = th->tag;
|
|
tracing = th->tracing;
|
|
ruby_errinfo = th->errinfo;
|
|
rb_last_status = th->last_status;
|
|
ruby_safe_level = th->safe;
|
|
|
|
ruby_current_node = th->node;
|
|
|
|
#ifdef SAVE_WIN32_EXCEPTION_LIST
|
|
win32_set_exception_list(th->win32_exception_list);
|
|
#endif
|
|
tmp = th;
|
|
ex = exit;
|
|
FLUSH_REGISTER_WINDOWS;
|
|
MEMCPY(tmp->stk_pos, tmp->stk_ptr, VALUE, tmp->stk_len);
|
|
#ifdef __ia64
|
|
MEMCPY(tmp->bstr_pos, tmp->bstr_ptr, VALUE, tmp->bstr_len);
|
|
#endif
|
|
|
|
tval = rb_lastline_get();
|
|
rb_lastline_set(tmp->last_line);
|
|
tmp->last_line = tval;
|
|
tval = rb_backref_get();
|
|
rb_backref_set(tmp->last_match);
|
|
tmp->last_match = tval;
|
|
|
|
ruby_longjmp(tmp->context, ex);
|
|
}
|
|
|
|
#ifdef __ia64
|
|
#define C(a) rse_##a##0, rse_##a##1, rse_##a##2, rse_##a##3, rse_##a##4
|
|
#define E(a) rse_##a##0= rse_##a##1= rse_##a##2= rse_##a##3= rse_##a##4
|
|
static volatile int C(a), C(b), C(c), C(d), C(e);
|
|
static volatile int C(f), C(g), C(h), C(i), C(j);
|
|
static volatile int C(k), C(l), C(m), C(n), C(o);
|
|
static volatile int C(p), C(q), C(r), C(s), C(t);
|
|
int rb_dummy_false = 0;
|
|
NORETURN(NOINLINE(static void register_stack_extend(rb_thread_t, int, void *, VALUE *)));
|
|
static void
|
|
register_stack_extend(rb_thread_t th, int exit, void *vp, VALUE *curr_bsp)
|
|
{
|
|
if (rb_dummy_false) {
|
|
/* use registers as much as possible */
|
|
E(a) = E(b) = E(c) = E(d) = E(e) =
|
|
E(f) = E(g) = E(h) = E(i) = E(j) =
|
|
E(k) = E(l) = E(m) = E(n) = E(o) =
|
|
E(p) = E(q) = E(r) = E(s) = E(t) = 0;
|
|
E(a) = E(b) = E(c) = E(d) = E(e) =
|
|
E(f) = E(g) = E(h) = E(i) = E(j) =
|
|
E(k) = E(l) = E(m) = E(n) = E(o) =
|
|
E(p) = E(q) = E(r) = E(s) = E(t) = 0;
|
|
}
|
|
if (curr_bsp < th->bstr_pos+th->bstr_len) {
|
|
register_stack_extend(th, exit, &exit, (VALUE*)rb_ia64_bsp());
|
|
}
|
|
rb_thread_restore_context_0(th, exit, &exit);
|
|
}
|
|
#undef C
|
|
#undef E
|
|
#endif
|
|
|
|
static void
|
|
stack_extend(rb_thread_t th, int exit, VALUE *addr_in_prev_frame)
|
|
{
|
|
#define STACK_PAD_SIZE 1024
|
|
VALUE space[STACK_PAD_SIZE];
|
|
|
|
#if STACK_GROW_DIRECTION < 0
|
|
if (addr_in_prev_frame > th->stk_pos) stack_extend(th, exit, &space[0]);
|
|
#elif STACK_GROW_DIRECTION > 0
|
|
if (addr_in_prev_frame < th->stk_pos + th->stk_len) stack_extend(th, exit, &space[STACK_PAD_SIZE-1]);
|
|
#else
|
|
if (addr_in_prev_frame < rb_gc_stack_start) {
|
|
/* Stack grows downward */
|
|
if (addr_in_prev_frame > th->stk_pos) stack_extend(th, exit, &space[0]);
|
|
}
|
|
else {
|
|
/* Stack grows upward */
|
|
if (addr_in_prev_frame < th->stk_pos + th->stk_len) stack_extend(th, exit, &space[STACK_PAD_SIZE-1]);
|
|
}
|
|
#endif
|
|
#ifdef __ia64
|
|
register_stack_extend(th, exit, space, (VALUE*)rb_ia64_bsp());
|
|
#else
|
|
rb_thread_restore_context_0(th, exit, space);
|
|
#endif
|
|
}
|
|
|
|
static void
|
|
rb_thread_restore_context(rb_thread_t th, int exit)
|
|
{
|
|
VALUE v;
|
|
if (!th->stk_ptr) rb_bug("unsaved context");
|
|
stack_extend(th, exit, &v);
|
|
}
|
|
|
|
static void
|
|
rb_thread_ready(rb_thread_t th)
|
|
{
|
|
th->wait_for = 0;
|
|
if (th->status != THREAD_TO_KILL) {
|
|
th->status = THREAD_RUNNABLE;
|
|
}
|
|
}
|
|
|
|
static void
|
|
rb_thread_die(rb_thread_t th)
|
|
{
|
|
th->thgroup = 0;
|
|
th->status = THREAD_KILLED;
|
|
if (th->stk_ptr) free(th->stk_ptr);
|
|
th->stk_ptr = 0;
|
|
}
|
|
|
|
static void
|
|
rb_thread_remove(rb_thread_t th)
|
|
{
|
|
if (th->status == THREAD_KILLED) return;
|
|
|
|
rb_thread_ready(th);
|
|
rb_thread_die(th);
|
|
th->prev->next = th->next;
|
|
th->next->prev = th->prev;
|
|
}
|
|
|
|
static int
|
|
rb_thread_dead(rb_thread_t th)
|
|
{
|
|
return th->status == THREAD_KILLED;
|
|
}
|
|
|
|
void
|
|
rb_thread_fd_close(int fd)
|
|
{
|
|
rb_thread_t th;
|
|
|
|
FOREACH_THREAD(th) {
|
|
if (((th->wait_for & WAIT_FD) && fd == th->fd) ||
|
|
((th->wait_for & WAIT_SELECT) && (fd < th->fd) &&
|
|
(FD_ISSET(fd, &th->readfds) ||
|
|
FD_ISSET(fd, &th->writefds) ||
|
|
FD_ISSET(fd, &th->exceptfds)))) {
|
|
VALUE exc = rb_exc_new2(rb_eIOError, "stream closed");
|
|
rb_thread_raise(1, &exc, th);
|
|
}
|
|
}
|
|
END_FOREACH(th);
|
|
}
|
|
|
|
NORETURN(static void rb_thread_main_jump(VALUE, int));
|
|
static void
|
|
rb_thread_main_jump(VALUE err, int tag)
|
|
{
|
|
curr_thread = main_thread;
|
|
th_raise_exception = err;
|
|
th_raise_node = ruby_current_node;
|
|
rb_thread_restore_context(main_thread, tag);
|
|
}
|
|
|
|
NORETURN(static void rb_thread_deadlock(void));
|
|
static void
|
|
rb_thread_deadlock(void)
|
|
{
|
|
char msg[21+SIZEOF_LONG*2];
|
|
VALUE e;
|
|
|
|
sprintf(msg, "Thread(%p): deadlock", (void*)curr_thread->thread);
|
|
e = rb_exc_new2(rb_eFatal, msg);
|
|
if (curr_thread == main_thread) {
|
|
rb_exc_raise(e);
|
|
}
|
|
rb_thread_main_jump(e, RESTORE_RAISE);
|
|
}
|
|
|
|
static void
|
|
copy_fds(rb_fdset_t *dst, rb_fdset_t *src, int max)
|
|
{
|
|
int n = 0;
|
|
int i;
|
|
|
|
if (max >= rb_fd_max(src)) max = rb_fd_max(src) - 1;
|
|
for (i=0; i<=max; i++) {
|
|
if (FD_ISSET(i, src)) {
|
|
n = i;
|
|
FD_SET(i, dst);
|
|
}
|
|
}
|
|
}
|
|
|
|
static int
|
|
match_fds(rb_fdset_t *dst, rb_fdset_t *src, int max)
|
|
{
|
|
int i;
|
|
|
|
if (max >= rb_fd_max(src)) max = rb_fd_max(src) - 1;
|
|
if (max >= rb_fd_max(dst)) max = rb_fd_max(dst) - 1;
|
|
for (i=0; i<=max; i++) {
|
|
if (FD_ISSET(i, src) && FD_ISSET(i, dst)) {
|
|
return Qtrue;
|
|
}
|
|
}
|
|
return Qfalse;
|
|
}
|
|
|
|
static int
|
|
intersect_fds(rb_fdset_t *src, rb_fdset_t *dst, int max)
|
|
{
|
|
int i, n = 0;
|
|
|
|
if (max >= rb_fd_max(dst)) max = rb_fd_max(dst) - 1;
|
|
for (i=0; i<=max; i++) {
|
|
if (FD_ISSET(i, dst)) {
|
|
if (FD_ISSET(i, src)) {
|
|
/* Wake up only one thread per fd. */
|
|
FD_CLR(i, src);
|
|
n++;
|
|
}
|
|
else {
|
|
FD_CLR(i, dst);
|
|
}
|
|
}
|
|
}
|
|
return n;
|
|
}
|
|
|
|
static int
|
|
find_bad_fds(rb_fdset_t *dst, rb_fdset_t *src, int max)
|
|
{
|
|
int i, test = Qfalse;
|
|
|
|
if (max >= rb_fd_max(src)) max = rb_fd_max(src) - 1;
|
|
for (i=0; i<=max; i++) {
|
|
if (FD_ISSET(i, src) && !FD_ISSET(i, dst)) {
|
|
FD_CLR(i, src);
|
|
test = Qtrue;
|
|
}
|
|
}
|
|
return test;
|
|
}
|
|
|
|
void
|
|
rb_thread_schedule(void)
|
|
{
|
|
rb_thread_t next; /* OK */
|
|
rb_thread_t th;
|
|
rb_thread_t curr;
|
|
int found = 0;
|
|
|
|
rb_fdset_t readfds;
|
|
rb_fdset_t writefds;
|
|
rb_fdset_t exceptfds;
|
|
struct timeval delay_tv, *delay_ptr;
|
|
double delay, now; /* OK */
|
|
int n, max;
|
|
int need_select = 0;
|
|
int select_timeout = 0;
|
|
|
|
#ifdef HAVE_NATIVETHREAD
|
|
if (!is_ruby_native_thread()) {
|
|
rb_bug("cross-thread violation on rb_thread_schedule()");
|
|
}
|
|
#endif
|
|
rb_thread_pending = rb_thread_critical = 0;
|
|
if (curr_thread == curr_thread->next
|
|
&& curr_thread->status == THREAD_RUNNABLE)
|
|
return;
|
|
|
|
next = 0;
|
|
curr = curr_thread; /* starting thread */
|
|
|
|
while (curr->status == THREAD_KILLED) {
|
|
curr = curr->prev;
|
|
}
|
|
|
|
rb_fd_init(&readfds);
|
|
rb_fd_init(&writefds);
|
|
rb_fd_init(&exceptfds);
|
|
|
|
again:
|
|
max = -1;
|
|
FD_ZERO(&readfds);
|
|
FD_ZERO(&writefds);
|
|
FD_ZERO(&exceptfds);
|
|
delay = DELAY_INFTY;
|
|
now = -1.0;
|
|
|
|
FOREACH_THREAD_FROM(curr, th) {
|
|
if (!found && th->status <= THREAD_RUNNABLE) {
|
|
found = 1;
|
|
}
|
|
if (th->status != THREAD_STOPPED) continue;
|
|
if (th->wait_for & WAIT_JOIN) {
|
|
if (rb_thread_dead(th->join)) {
|
|
th->status = THREAD_RUNNABLE;
|
|
found = 1;
|
|
}
|
|
}
|
|
if (th->wait_for & WAIT_FD) {
|
|
FD_SET(th->fd, &readfds);
|
|
if (max < th->fd) max = th->fd;
|
|
need_select = 1;
|
|
}
|
|
if (th->wait_for & WAIT_SELECT) {
|
|
copy_fds(&readfds, &th->readfds, th->fd);
|
|
copy_fds(&writefds, &th->writefds, th->fd);
|
|
copy_fds(&exceptfds, &th->exceptfds, th->fd);
|
|
if (max < th->fd) max = th->fd;
|
|
need_select = 1;
|
|
if (th->wait_for & WAIT_TIME) {
|
|
select_timeout = 1;
|
|
}
|
|
th->select_value = 0;
|
|
}
|
|
if (th->wait_for & WAIT_TIME) {
|
|
double th_delay;
|
|
|
|
if (now < 0.0) now = timeofday();
|
|
th_delay = th->delay - now;
|
|
if (th_delay <= 0.0) {
|
|
th->status = THREAD_RUNNABLE;
|
|
found = 1;
|
|
}
|
|
else if (th_delay < delay) {
|
|
delay = th_delay;
|
|
need_select = 1;
|
|
}
|
|
else if (th->delay == DELAY_INFTY) {
|
|
need_select = 1;
|
|
}
|
|
}
|
|
}
|
|
END_FOREACH_FROM(curr, th);
|
|
|
|
/* Do the select if needed */
|
|
if (need_select) {
|
|
/* Convert delay to a timeval */
|
|
/* If a thread is runnable, just poll */
|
|
if (found) {
|
|
delay_tv.tv_sec = 0;
|
|
delay_tv.tv_usec = 0;
|
|
delay_ptr = &delay_tv;
|
|
}
|
|
else if (delay == DELAY_INFTY) {
|
|
delay_ptr = 0;
|
|
}
|
|
else {
|
|
delay_tv.tv_sec = delay;
|
|
delay_tv.tv_usec = (delay - (double)delay_tv.tv_sec)*1e6;
|
|
delay_ptr = &delay_tv;
|
|
}
|
|
|
|
n = rb_fd_select(max+1, &readfds, &writefds, &exceptfds, delay_ptr);
|
|
if (n < 0) {
|
|
int e = errno;
|
|
|
|
if (rb_trap_pending) {
|
|
int status;
|
|
rb_protect((VALUE (*)(VALUE))rb_trap_exec, Qnil, &status);
|
|
if (status) {
|
|
rb_fd_term(&readfds);
|
|
rb_fd_term(&writefds);
|
|
rb_fd_term(&exceptfds);
|
|
rb_jump_tag(status);
|
|
}
|
|
}
|
|
if (e == EINTR) goto again;
|
|
#ifdef ERESTART
|
|
if (e == ERESTART) goto again;
|
|
#endif
|
|
FOREACH_THREAD_FROM(curr, th) {
|
|
if (th->wait_for & WAIT_SELECT) {
|
|
int v = 0;
|
|
|
|
v |= find_bad_fds(&readfds, &th->readfds, th->fd);
|
|
v |= find_bad_fds(&writefds, &th->writefds, th->fd);
|
|
v |= find_bad_fds(&exceptfds, &th->exceptfds, th->fd);
|
|
if (v) {
|
|
th->select_value = n;
|
|
n = max;
|
|
}
|
|
}
|
|
}
|
|
END_FOREACH_FROM(curr, th);
|
|
}
|
|
if (select_timeout && n == 0) {
|
|
if (now < 0.0) now = timeofday();
|
|
FOREACH_THREAD_FROM(curr, th) {
|
|
if (((th->wait_for&(WAIT_SELECT|WAIT_TIME)) == (WAIT_SELECT|WAIT_TIME)) &&
|
|
th->delay <= now) {
|
|
th->status = THREAD_RUNNABLE;
|
|
th->wait_for = 0;
|
|
th->select_value = 0;
|
|
found = 1;
|
|
intersect_fds(&readfds, &th->readfds, max);
|
|
intersect_fds(&writefds, &th->writefds, max);
|
|
intersect_fds(&exceptfds, &th->exceptfds, max);
|
|
}
|
|
}
|
|
END_FOREACH_FROM(curr, th);
|
|
}
|
|
if (n > 0) {
|
|
now = -1.0;
|
|
/* Some descriptors are ready.
|
|
Make the corresponding threads runnable. */
|
|
FOREACH_THREAD_FROM(curr, th) {
|
|
if ((th->wait_for&WAIT_FD) && FD_ISSET(th->fd, &readfds)) {
|
|
/* Wake up only one thread per fd. */
|
|
FD_CLR(th->fd, &readfds);
|
|
th->status = THREAD_RUNNABLE;
|
|
th->fd = 0;
|
|
th->wait_for = 0;
|
|
found = 1;
|
|
}
|
|
if ((th->wait_for&WAIT_SELECT) &&
|
|
(match_fds(&readfds, &th->readfds, max) ||
|
|
match_fds(&writefds, &th->writefds, max) ||
|
|
match_fds(&exceptfds, &th->exceptfds, max))) {
|
|
/* Wake up only one thread per fd. */
|
|
th->status = THREAD_RUNNABLE;
|
|
th->wait_for = 0;
|
|
n = intersect_fds(&readfds, &th->readfds, max) +
|
|
intersect_fds(&writefds, &th->writefds, max) +
|
|
intersect_fds(&exceptfds, &th->exceptfds, max);
|
|
th->select_value = n;
|
|
found = 1;
|
|
}
|
|
}
|
|
END_FOREACH_FROM(curr, th);
|
|
}
|
|
/* The delays for some of the threads should have expired.
|
|
Go through the loop once more, to check the delays. */
|
|
if (!found && delay != DELAY_INFTY)
|
|
goto again;
|
|
}
|
|
|
|
rb_fd_term(&readfds);
|
|
rb_fd_term(&writefds);
|
|
rb_fd_term(&exceptfds);
|
|
|
|
FOREACH_THREAD_FROM(curr, th) {
|
|
if (th->status == THREAD_TO_KILL) {
|
|
next = th;
|
|
break;
|
|
}
|
|
if (th->status == THREAD_RUNNABLE && th->stk_ptr) {
|
|
if (!next || next->priority < th->priority)
|
|
next = th;
|
|
}
|
|
}
|
|
END_FOREACH_FROM(curr, th);
|
|
|
|
if (!next) {
|
|
/* raise fatal error to main thread */
|
|
curr_thread->node = ruby_current_node;
|
|
if (curr->next == curr) {
|
|
TRAP_BEG;
|
|
pause();
|
|
TRAP_END;
|
|
}
|
|
FOREACH_THREAD_FROM(curr, th) {
|
|
warn_printf("deadlock %p: %s:",
|
|
th->thread, thread_status_name(th->status));
|
|
if (th->wait_for & WAIT_FD) warn_printf("F(%d)", th->fd);
|
|
if (th->wait_for & WAIT_SELECT) warn_printf("S");
|
|
if (th->wait_for & WAIT_TIME) warn_printf("T(%f)", th->delay);
|
|
if (th->wait_for & WAIT_JOIN)
|
|
warn_printf("J(%p)", th->join ? th->join->thread : 0);
|
|
if (th->wait_for & WAIT_PID) warn_printf("P");
|
|
if (!th->wait_for) warn_printf("-");
|
|
warn_printf(" %s - %s:%d\n",
|
|
th==main_thread ? "(main)" : "",
|
|
th->node->nd_file, nd_line(th->node));
|
|
}
|
|
END_FOREACH_FROM(curr, th);
|
|
next = main_thread;
|
|
rb_thread_ready(next);
|
|
next->status = THREAD_TO_KILL;
|
|
if (!rb_thread_dead(curr_thread)) {
|
|
rb_thread_save_context(curr_thread);
|
|
}
|
|
rb_thread_deadlock();
|
|
}
|
|
next->wait_for = 0;
|
|
if (next->status == THREAD_RUNNABLE && next == curr_thread) {
|
|
return;
|
|
}
|
|
|
|
/* context switch */
|
|
if (curr == curr_thread) {
|
|
if (THREAD_SAVE_CONTEXT(curr)) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
curr_thread = next;
|
|
if (next->status == THREAD_TO_KILL) {
|
|
if (!(next->flags & THREAD_TERMINATING)) {
|
|
next->flags |= THREAD_TERMINATING;
|
|
/* terminate; execute ensure-clause if any */
|
|
rb_thread_restore_context(next, RESTORE_FATAL);
|
|
}
|
|
}
|
|
rb_thread_restore_context(next, RESTORE_NORMAL);
|
|
}
|
|
|
|
void
|
|
rb_thread_wait_fd(int fd)
|
|
{
|
|
if (rb_thread_critical) return;
|
|
if (curr_thread == curr_thread->next) return;
|
|
if (curr_thread->status == THREAD_TO_KILL) return;
|
|
|
|
curr_thread->status = THREAD_STOPPED;
|
|
curr_thread->fd = fd;
|
|
curr_thread->wait_for = WAIT_FD;
|
|
rb_thread_schedule();
|
|
}
|
|
|
|
int
|
|
rb_thread_fd_writable(int fd)
|
|
{
|
|
if (rb_thread_critical) return Qtrue;
|
|
if (curr_thread == curr_thread->next) return Qtrue;
|
|
if (curr_thread->status == THREAD_TO_KILL) return Qtrue;
|
|
if (curr_thread->status == THREAD_KILLED) return Qtrue;
|
|
|
|
curr_thread->status = THREAD_STOPPED;
|
|
FD_ZERO(&curr_thread->readfds);
|
|
FD_ZERO(&curr_thread->writefds);
|
|
FD_SET(fd, &curr_thread->writefds);
|
|
FD_ZERO(&curr_thread->exceptfds);
|
|
curr_thread->fd = fd+1;
|
|
curr_thread->wait_for = WAIT_SELECT;
|
|
rb_thread_schedule();
|
|
return Qfalse;
|
|
}
|
|
|
|
void
|
|
rb_thread_wait_for(struct timeval time)
|
|
{
|
|
double date;
|
|
|
|
if (rb_thread_critical ||
|
|
curr_thread == curr_thread->next ||
|
|
curr_thread->status == THREAD_TO_KILL) {
|
|
int n;
|
|
int thr_critical = rb_thread_critical;
|
|
#ifndef linux
|
|
double d, limit;
|
|
limit = timeofday()+(double)time.tv_sec+(double)time.tv_usec*1e-6;
|
|
#endif
|
|
for (;;) {
|
|
rb_thread_critical = Qtrue;
|
|
TRAP_BEG;
|
|
n = select(0, 0, 0, 0, &time);
|
|
rb_thread_critical = thr_critical;
|
|
TRAP_END;
|
|
if (n == 0) return;
|
|
if (n < 0) {
|
|
switch (errno) {
|
|
case EINTR:
|
|
#ifdef ERESTART
|
|
case ERESTART:
|
|
#endif
|
|
break;
|
|
default:
|
|
rb_sys_fail("sleep");
|
|
}
|
|
}
|
|
#ifndef linux
|
|
d = limit - timeofday();
|
|
|
|
time.tv_sec = (int)d;
|
|
time.tv_usec = (int)((d - (int)d)*1e6);
|
|
if (time.tv_usec < 0) {
|
|
time.tv_usec += (long)1e6;
|
|
time.tv_sec -= 1;
|
|
}
|
|
if (time.tv_sec < 0) return;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
date = timeofday() + (double)time.tv_sec + (double)time.tv_usec*1e-6;
|
|
curr_thread->status = THREAD_STOPPED;
|
|
curr_thread->delay = date;
|
|
curr_thread->wait_for = WAIT_TIME;
|
|
rb_thread_schedule();
|
|
}
|
|
|
|
void rb_thread_sleep_forever(void);
|
|
|
|
int
|
|
rb_thread_alone(void)
|
|
{
|
|
return curr_thread == curr_thread->next;
|
|
}
|
|
|
|
int
|
|
rb_thread_select(int max, fd_set *read, fd_set *write, fd_set *except, struct timeval *timeout)
|
|
{
|
|
#ifndef linux
|
|
double limit;
|
|
#endif
|
|
int n;
|
|
|
|
if (!read && !write && !except) {
|
|
if (!timeout) {
|
|
rb_thread_sleep_forever();
|
|
return 0;
|
|
}
|
|
rb_thread_wait_for(*timeout);
|
|
return 0;
|
|
}
|
|
|
|
#ifndef linux
|
|
if (timeout) {
|
|
limit = timeofday()+
|
|
(double)timeout->tv_sec+(double)timeout->tv_usec*1e-6;
|
|
}
|
|
#endif
|
|
|
|
if (rb_thread_critical ||
|
|
curr_thread == curr_thread->next ||
|
|
curr_thread->status == THREAD_TO_KILL) {
|
|
#ifndef linux
|
|
struct timeval tv, *tvp = timeout;
|
|
|
|
if (timeout) {
|
|
tv = *timeout;
|
|
tvp = &tv;
|
|
}
|
|
#else
|
|
struct timeval *const tvp = timeout;
|
|
#endif
|
|
for (;;) {
|
|
TRAP_BEG;
|
|
n = select(max, read, write, except, tvp);
|
|
TRAP_END;
|
|
if (n < 0) {
|
|
switch (errno) {
|
|
case EINTR:
|
|
#ifdef ERESTART
|
|
case ERESTART:
|
|
#endif
|
|
#ifndef linux
|
|
if (timeout) {
|
|
double d = limit - timeofday();
|
|
|
|
tv.tv_sec = (unsigned int)d;
|
|
tv.tv_usec = (long)((d-(double)tv.tv_sec)*1e6);
|
|
if (tv.tv_sec < 0) tv.tv_sec = 0;
|
|
if (tv.tv_usec < 0) tv.tv_usec = 0;
|
|
}
|
|
#endif
|
|
continue;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
return n;
|
|
}
|
|
}
|
|
|
|
curr_thread->status = THREAD_STOPPED;
|
|
if (read) rb_fd_copy(&curr_thread->readfds, read, max);
|
|
else FD_ZERO(&curr_thread->readfds);
|
|
if (write) rb_fd_copy(&curr_thread->writefds, write, max);
|
|
else FD_ZERO(&curr_thread->writefds);
|
|
if (except) rb_fd_copy(&curr_thread->exceptfds, except, max);
|
|
else FD_ZERO(&curr_thread->exceptfds);
|
|
curr_thread->fd = max;
|
|
curr_thread->wait_for = WAIT_SELECT;
|
|
if (timeout) {
|
|
curr_thread->delay = timeofday() +
|
|
(double)timeout->tv_sec + (double)timeout->tv_usec*1e-6;
|
|
curr_thread->wait_for |= WAIT_TIME;
|
|
}
|
|
rb_thread_schedule();
|
|
if (read) *read = *rb_fd_ptr(&curr_thread->readfds);
|
|
if (write) *write = *rb_fd_ptr(&curr_thread->writefds);
|
|
if (except) *except = *rb_fd_ptr(&curr_thread->exceptfds);
|
|
return curr_thread->select_value;
|
|
}
|
|
|
|
static int
|
|
rb_thread_join(rb_thread_t th, double limit)
|
|
{
|
|
enum thread_status last_status = THREAD_RUNNABLE;
|
|
|
|
if (rb_thread_critical) rb_thread_deadlock();
|
|
if (!rb_thread_dead(th)) {
|
|
if (th == curr_thread)
|
|
rb_raise(rb_eThreadError, "thread %p tried to join itself",
|
|
(void*)th->thread);
|
|
if ((th->wait_for & WAIT_JOIN) && th->join == curr_thread)
|
|
rb_raise(rb_eThreadError, "Thread#join: deadlock %p - mutual join(%p)",
|
|
(void*)curr_thread->thread, (void*)th->thread);
|
|
if (curr_thread->status == THREAD_TO_KILL)
|
|
last_status = THREAD_TO_KILL;
|
|
if (limit == 0) return Qfalse;
|
|
curr_thread->status = THREAD_STOPPED;
|
|
curr_thread->join = th;
|
|
curr_thread->wait_for = WAIT_JOIN;
|
|
curr_thread->delay = timeofday() + limit;
|
|
if (limit < DELAY_INFTY) curr_thread->wait_for |= WAIT_TIME;
|
|
rb_thread_schedule();
|
|
curr_thread->status = last_status;
|
|
if (!rb_thread_dead(th)) return Qfalse;
|
|
}
|
|
|
|
if (!NIL_P(th->errinfo) && (th->flags & THREAD_RAISED)) {
|
|
VALUE oldbt = get_backtrace(th->errinfo);
|
|
VALUE errat = make_backtrace();
|
|
VALUE errinfo = rb_obj_dup(th->errinfo);
|
|
|
|
if (TYPE(oldbt) == T_ARRAY && RARRAY(oldbt)->len > 0) {
|
|
rb_ary_unshift(errat, rb_ary_entry(oldbt, 0));
|
|
}
|
|
set_backtrace(errinfo, errat);
|
|
rb_exc_raise(errinfo);
|
|
}
|
|
|
|
return Qtrue;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* thr.join => thr
|
|
* thr.join(limit) => thr
|
|
*
|
|
* The calling thread will suspend execution and run <i>thr</i>. Does not
|
|
* return until <i>thr</i> exits or until <i>limit</i> seconds have passed. If
|
|
* the time limit expires, <code>nil</code> will be returned, otherwise
|
|
* <i>thr</i> is returned.
|
|
*
|
|
* Any threads not joined will be killed when the main program exits. If
|
|
* <i>thr</i> had previously raised an exception and the
|
|
* <code>abort_on_exception</code> and <code>$DEBUG</code> flags are not set
|
|
* (so the exception has not yet been processed) it will be processed at this
|
|
* time.
|
|
*
|
|
* a = Thread.new { print "a"; sleep(10); print "b"; print "c" }
|
|
* x = Thread.new { print "x"; Thread.pass; print "y"; print "z" }
|
|
* x.join # Let x thread finish, a will be killed on exit.
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* axyz
|
|
*
|
|
* The following example illustrates the <i>limit</i> parameter.
|
|
*
|
|
* y = Thread.new { 4.times { sleep 0.1; puts 'tick... ' }}
|
|
* puts "Waiting" until y.join(0.15)
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* tick...
|
|
* Waiting
|
|
* tick...
|
|
* Waitingtick...
|
|
*
|
|
*
|
|
* tick...
|
|
*/
|
|
|
|
static VALUE
|
|
rb_thread_join_m(int argc, VALUE *argv, VALUE thread)
|
|
{
|
|
VALUE limit;
|
|
double delay = DELAY_INFTY;
|
|
rb_thread_t th = rb_thread_check(thread);
|
|
|
|
rb_scan_args(argc, argv, "01", &limit);
|
|
if (!NIL_P(limit)) delay = rb_num2dbl(limit);
|
|
if (!rb_thread_join(th, delay))
|
|
return Qnil;
|
|
return thread;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Thread.current => thread
|
|
*
|
|
* Returns the currently executing thread.
|
|
*
|
|
* Thread.current #=> #<Thread:0x401bdf4c run>
|
|
*/
|
|
|
|
VALUE
|
|
rb_thread_current(void)
|
|
{
|
|
return curr_thread->thread;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Thread.main => thread
|
|
*
|
|
* Returns the main thread for the process.
|
|
*
|
|
* Thread.main #=> #<Thread:0x401bdf4c run>
|
|
*/
|
|
|
|
VALUE
|
|
rb_thread_main(void)
|
|
{
|
|
return main_thread->thread;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Thread.list => array
|
|
*
|
|
* Returns an array of <code>Thread</code> objects for all threads that are
|
|
* either runnable or stopped.
|
|
*
|
|
* Thread.new { sleep(200) }
|
|
* Thread.new { 1000000.times {|i| i*i } }
|
|
* Thread.new { Thread.stop }
|
|
* Thread.list.each {|t| p t}
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* #<Thread:0x401b3e84 sleep>
|
|
* #<Thread:0x401b3f38 run>
|
|
* #<Thread:0x401b3fb0 sleep>
|
|
* #<Thread:0x401bdf4c run>
|
|
*/
|
|
|
|
VALUE
|
|
rb_thread_list(void)
|
|
{
|
|
rb_thread_t th;
|
|
VALUE ary = rb_ary_new();
|
|
|
|
FOREACH_THREAD(th) {
|
|
switch (th->status) {
|
|
case THREAD_RUNNABLE:
|
|
case THREAD_STOPPED:
|
|
case THREAD_TO_KILL:
|
|
rb_ary_push(ary, th->thread);
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
END_FOREACH(th);
|
|
|
|
return ary;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* thr.wakeup => thr
|
|
*
|
|
* Marks <i>thr</i> as eligible for scheduling (it may still remain blocked on
|
|
* I/O, however). Does not invoke the scheduler (see <code>Thread#run</code>).
|
|
*
|
|
* c = Thread.new { Thread.stop; puts "hey!" }
|
|
* c.wakeup
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* hey!
|
|
*/
|
|
|
|
VALUE
|
|
rb_thread_wakeup(VALUE thread)
|
|
{
|
|
rb_thread_t th = rb_thread_check(thread);
|
|
|
|
if (th->status == THREAD_KILLED)
|
|
rb_raise(rb_eThreadError, "killed thread");
|
|
rb_thread_ready(th);
|
|
|
|
return thread;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* thr.run => thr
|
|
*
|
|
* Wakes up <i>thr</i>, making it eligible for scheduling. If not in a critical
|
|
* section, then invokes the scheduler.
|
|
*
|
|
* a = Thread.new { puts "a"; Thread.stop; puts "c" }
|
|
* Thread.pass
|
|
* puts "Got here"
|
|
* a.run
|
|
* a.join
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* a
|
|
* Got here
|
|
* c
|
|
*/
|
|
|
|
VALUE
|
|
rb_thread_run(VALUE thread)
|
|
{
|
|
rb_thread_wakeup(thread);
|
|
if (!rb_thread_critical) rb_thread_schedule();
|
|
|
|
return thread;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* thr.exit => thr or nil
|
|
* thr.kill => thr or nil
|
|
* thr.terminate => thr or nil
|
|
*
|
|
* Terminates <i>thr</i> and schedules another thread to be run. If this thread
|
|
* is already marked to be killed, <code>exit</code> returns the
|
|
* <code>Thread</code>. If this is the main thread, or the last thread, exits
|
|
* the process.
|
|
*/
|
|
|
|
VALUE
|
|
rb_thread_kill(VALUE thread)
|
|
{
|
|
rb_thread_t th = rb_thread_check(thread);
|
|
|
|
if (th != curr_thread && th->safe < 4) {
|
|
rb_secure(4);
|
|
}
|
|
if (th->status == THREAD_TO_KILL || th->status == THREAD_KILLED)
|
|
return thread;
|
|
if (th == th->next || th == main_thread) rb_exit(EXIT_SUCCESS);
|
|
|
|
rb_thread_ready(th);
|
|
th->status = THREAD_TO_KILL;
|
|
if (!rb_thread_critical) rb_thread_schedule();
|
|
return thread;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Thread.kill(thread) => thread
|
|
*
|
|
* Causes the given <em>thread</em> to exit (see <code>Thread::exit</code>).
|
|
*
|
|
* count = 0
|
|
* a = Thread.new { loop { count += 1 } }
|
|
* sleep(0.1) #=> 0
|
|
* Thread.kill(a) #=> #<Thread:0x401b3d30 dead>
|
|
* count #=> 93947
|
|
* a.alive? #=> false
|
|
*/
|
|
|
|
static VALUE
|
|
rb_thread_s_kill(VALUE obj, VALUE th)
|
|
{
|
|
return rb_thread_kill(th);
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Thread.exit => thread
|
|
*
|
|
* Terminates the currently running thread and schedules another thread to be
|
|
* run. If this thread is already marked to be killed, <code>exit</code>
|
|
* returns the <code>Thread</code>. If this is the main thread, or the last
|
|
* thread, exit the process.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_thread_exit(void)
|
|
{
|
|
return rb_thread_kill(curr_thread->thread);
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Thread.pass => nil
|
|
*
|
|
* Invokes the thread scheduler to pass execution to another thread.
|
|
*
|
|
* a = Thread.new { print "a"; Thread.pass;
|
|
* print "b"; Thread.pass;
|
|
* print "c" }
|
|
* b = Thread.new { print "x"; Thread.pass;
|
|
* print "y"; Thread.pass;
|
|
* print "z" }
|
|
* a.join
|
|
* b.join
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* axbycz
|
|
*/
|
|
|
|
static VALUE
|
|
rb_thread_pass(void)
|
|
{
|
|
rb_thread_schedule();
|
|
return Qnil;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Thread.stop => nil
|
|
*
|
|
* Stops execution of the current thread, putting it into a ``sleep'' state,
|
|
* and schedules execution of another thread. Resets the ``critical'' condition
|
|
* to <code>false</code>.
|
|
*
|
|
* a = Thread.new { print "a"; Thread.stop; print "c" }
|
|
* Thread.pass
|
|
* print "b"
|
|
* a.run
|
|
* a.join
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* abc
|
|
*/
|
|
|
|
VALUE
|
|
rb_thread_stop(void)
|
|
{
|
|
enum thread_status last_status = THREAD_RUNNABLE;
|
|
|
|
rb_thread_critical = 0;
|
|
if (curr_thread == curr_thread->next) {
|
|
rb_raise(rb_eThreadError, "stopping only thread\n\tnote: use sleep to stop forever");
|
|
}
|
|
if (curr_thread->status == THREAD_TO_KILL)
|
|
last_status = THREAD_TO_KILL;
|
|
curr_thread->status = THREAD_STOPPED;
|
|
rb_thread_schedule();
|
|
curr_thread->status = last_status;
|
|
|
|
return Qnil;
|
|
}
|
|
|
|
struct timeval rb_time_timeval(VALUE time);
|
|
|
|
void
|
|
rb_thread_polling(void)
|
|
{
|
|
if (curr_thread != curr_thread->next) {
|
|
curr_thread->status = THREAD_STOPPED;
|
|
curr_thread->delay = timeofday() + (double)0.06;
|
|
curr_thread->wait_for = WAIT_TIME;
|
|
rb_thread_schedule();
|
|
}
|
|
}
|
|
|
|
void
|
|
rb_thread_sleep(int sec)
|
|
{
|
|
if (curr_thread == curr_thread->next) {
|
|
TRAP_BEG;
|
|
sleep(sec);
|
|
TRAP_END;
|
|
return;
|
|
}
|
|
rb_thread_wait_for(rb_time_timeval(INT2FIX(sec)));
|
|
}
|
|
|
|
void
|
|
rb_thread_sleep_forever(void)
|
|
{
|
|
int thr_critical = rb_thread_critical;
|
|
if (curr_thread == curr_thread->next ||
|
|
curr_thread->status == THREAD_TO_KILL) {
|
|
rb_thread_critical = Qtrue;
|
|
TRAP_BEG;
|
|
pause();
|
|
rb_thread_critical = thr_critical;
|
|
TRAP_END;
|
|
return;
|
|
}
|
|
|
|
curr_thread->delay = DELAY_INFTY;
|
|
curr_thread->wait_for = WAIT_TIME;
|
|
curr_thread->status = THREAD_STOPPED;
|
|
rb_thread_schedule();
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* thr.priority => integer
|
|
*
|
|
* Returns the priority of <i>thr</i>. Default is zero; higher-priority threads
|
|
* will run before lower-priority threads.
|
|
*
|
|
* Thread.current.priority #=> 0
|
|
*/
|
|
|
|
static VALUE
|
|
rb_thread_priority(VALUE thread)
|
|
{
|
|
return INT2NUM(rb_thread_check(thread)->priority);
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* thr.priority= integer => thr
|
|
*
|
|
* Sets the priority of <i>thr</i> to <i>integer</i>. Higher-priority threads
|
|
* will run before lower-priority threads.
|
|
*
|
|
* count1 = count2 = 0
|
|
* a = Thread.new do
|
|
* loop { count1 += 1 }
|
|
* end
|
|
* a.priority = -1
|
|
*
|
|
* b = Thread.new do
|
|
* loop { count2 += 1 }
|
|
* end
|
|
* b.priority = -2
|
|
* sleep 1 #=> 1
|
|
* Thread.critical = 1
|
|
* count1 #=> 622504
|
|
* count2 #=> 5832
|
|
*/
|
|
|
|
static VALUE
|
|
rb_thread_priority_set(VALUE thread, VALUE prio)
|
|
{
|
|
rb_thread_t th;
|
|
|
|
rb_secure(4);
|
|
th = rb_thread_check(thread);
|
|
|
|
th->priority = NUM2INT(prio);
|
|
rb_thread_schedule();
|
|
return prio;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* thr.safe_level => integer
|
|
*
|
|
* Returns the safe level in effect for <i>thr</i>. Setting thread-local safe
|
|
* levels can help when implementing sandboxes which run insecure code.
|
|
*
|
|
* thr = Thread.new { $SAFE = 3; sleep }
|
|
* Thread.current.safe_level #=> 0
|
|
* thr.safe_level #=> 3
|
|
*/
|
|
|
|
static VALUE
|
|
rb_thread_safe_level(VALUE thread)
|
|
{
|
|
rb_thread_t th;
|
|
|
|
th = rb_thread_check(thread);
|
|
if (th == curr_thread) {
|
|
return INT2NUM(ruby_safe_level);
|
|
}
|
|
return INT2NUM(th->safe);
|
|
}
|
|
|
|
static int ruby_thread_abort;
|
|
static VALUE thgroup_default;
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Thread.abort_on_exception => true or false
|
|
*
|
|
* Returns the status of the global ``abort on exception'' condition. The
|
|
* default is <code>false</code>. When set to <code>true</code>, or if the
|
|
* global <code>$DEBUG</code> flag is <code>true</code> (perhaps because the
|
|
* command line option <code>-d</code> was specified) all threads will abort
|
|
* (the process will <code>exit(0)</code>) if an exception is raised in any
|
|
* thread. See also <code>Thread::abort_on_exception=</code>.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_thread_s_abort_exc(void)
|
|
{
|
|
return ruby_thread_abort?Qtrue:Qfalse;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Thread.abort_on_exception= boolean => true or false
|
|
*
|
|
* When set to <code>true</code>, all threads will abort if an exception is
|
|
* raised. Returns the new state.
|
|
*
|
|
* Thread.abort_on_exception = true
|
|
* t1 = Thread.new do
|
|
* puts "In new thread"
|
|
* raise "Exception from thread"
|
|
* end
|
|
* sleep(1)
|
|
* puts "not reached"
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* In new thread
|
|
* prog.rb:4: Exception from thread (RuntimeError)
|
|
* from prog.rb:2:in `initialize'
|
|
* from prog.rb:2:in `new'
|
|
* from prog.rb:2
|
|
*/
|
|
|
|
static VALUE
|
|
rb_thread_s_abort_exc_set(VALUE self, VALUE val)
|
|
{
|
|
rb_secure(4);
|
|
ruby_thread_abort = RTEST(val);
|
|
return val;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* thr.abort_on_exception => true or false
|
|
*
|
|
* Returns the status of the thread-local ``abort on exception'' condition for
|
|
* <i>thr</i>. The default is <code>false</code>. See also
|
|
* <code>Thread::abort_on_exception=</code>.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_thread_abort_exc(VALUE thread)
|
|
{
|
|
return rb_thread_check(thread)->abort?Qtrue:Qfalse;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* thr.abort_on_exception= boolean => true or false
|
|
*
|
|
* When set to <code>true</code>, causes all threads (including the main
|
|
* program) to abort if an exception is raised in <i>thr</i>. The process will
|
|
* effectively <code>exit(0)</code>.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_thread_abort_exc_set(VALUE thread, VALUE val)
|
|
{
|
|
rb_secure(4);
|
|
rb_thread_check(thread)->abort = RTEST(val);
|
|
return val;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* thr.group => thgrp or nil
|
|
*
|
|
* Returns the <code>ThreadGroup</code> which contains <i>thr</i>, or nil if
|
|
* the thread is not a member of any group.
|
|
*
|
|
* Thread.main.group #=> #<ThreadGroup:0x4029d914>
|
|
*/
|
|
|
|
VALUE
|
|
rb_thread_group(VALUE thread)
|
|
{
|
|
VALUE group = rb_thread_check(thread)->thgroup;
|
|
if (!group) {
|
|
group = Qnil;
|
|
}
|
|
return group;
|
|
}
|
|
|
|
#ifdef __ia64
|
|
# define IA64_INIT(x) x
|
|
#else
|
|
# define IA64_INIT(x)
|
|
#endif
|
|
|
|
#define THREAD_ALLOC(th) do {\
|
|
th = ALLOC(struct thread);\
|
|
\
|
|
th->next = 0;\
|
|
th->prev = 0;\
|
|
\
|
|
th->status = THREAD_RUNNABLE;\
|
|
th->result = 0;\
|
|
th->flags = 0;\
|
|
\
|
|
th->stk_ptr = 0;\
|
|
th->stk_len = 0;\
|
|
th->stk_max = 0;\
|
|
th->wait_for = 0;\
|
|
IA64_INIT(th->bstr_ptr = 0);\
|
|
IA64_INIT(th->bstr_len = 0);\
|
|
IA64_INIT(th->bstr_max = 0);\
|
|
rb_fd_init(&th->readfds);\
|
|
rb_fd_init(&th->writefds);\
|
|
rb_fd_init(&th->exceptfds);\
|
|
th->delay = 0.0;\
|
|
th->join = 0;\
|
|
\
|
|
th->frame = 0;\
|
|
th->scope = 0;\
|
|
th->wrapper = 0;\
|
|
th->cref = ruby_cref;\
|
|
th->dyna_vars = ruby_dyna_vars;\
|
|
th->block = 0;\
|
|
th->tag = 0;\
|
|
th->tracing = 0;\
|
|
th->errinfo = Qnil;\
|
|
th->last_status = 0;\
|
|
th->last_line = 0;\
|
|
th->last_match = Qnil;\
|
|
th->abort = 0;\
|
|
th->priority = 0;\
|
|
th->thgroup = thgroup_default;\
|
|
th->locals = 0;\
|
|
th->thread = 0;\
|
|
th->anchor = 0;\
|
|
} while (0)
|
|
|
|
static rb_thread_t
|
|
rb_thread_alloc(VALUE klass)
|
|
{
|
|
rb_thread_t th;
|
|
struct RVarmap *vars;
|
|
|
|
THREAD_ALLOC(th);
|
|
th->thread = Data_Wrap_Struct(klass, thread_mark, thread_free, th);
|
|
|
|
for (vars = th->dyna_vars; vars; vars = vars->next) {
|
|
if (FL_TEST(vars, DVAR_DONT_RECYCLE)) break;
|
|
FL_SET(vars, DVAR_DONT_RECYCLE);
|
|
}
|
|
return th;
|
|
}
|
|
|
|
static int thread_init = 0;
|
|
|
|
#if defined(_THREAD_SAFE)
|
|
static void
|
|
catch_timer(int sig)
|
|
{
|
|
#if !defined(POSIX_SIGNAL) && !defined(BSD_SIGNAL)
|
|
signal(sig, catch_timer);
|
|
#endif
|
|
/* cause EINTR */
|
|
}
|
|
|
|
static pthread_t time_thread;
|
|
|
|
static void*
|
|
thread_timer(void *dummy)
|
|
{
|
|
for (;;) {
|
|
#ifdef HAVE_NANOSLEEP
|
|
struct timespec req, rem;
|
|
|
|
req.tv_sec = 0;
|
|
req.tv_nsec = 10000000;
|
|
nanosleep(&req, &rem);
|
|
#else
|
|
struct timeval tv;
|
|
tv.tv_sec = 0;
|
|
tv.tv_usec = 10000;
|
|
select(0, NULL, NULL, NULL, &tv);
|
|
#endif
|
|
if (!rb_thread_critical) {
|
|
rb_thread_pending = 1;
|
|
if (rb_trap_immediate) {
|
|
pthread_kill(ruby_thid, SIGVTALRM);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
rb_thread_start_timer()
|
|
{
|
|
}
|
|
|
|
void
|
|
rb_thread_stop_timer()
|
|
{
|
|
}
|
|
#elif defined(HAVE_SETITIMER)
|
|
static void
|
|
catch_timer(int sig)
|
|
{
|
|
#if !defined(POSIX_SIGNAL) && !defined(BSD_SIGNAL)
|
|
signal(sig, catch_timer);
|
|
#endif
|
|
if (!rb_thread_critical) {
|
|
rb_thread_pending = 1;
|
|
}
|
|
/* cause EINTR */
|
|
}
|
|
|
|
void
|
|
rb_thread_start_timer()
|
|
{
|
|
struct itimerval tval;
|
|
|
|
if (!thread_init) return;
|
|
tval.it_interval.tv_sec = 0;
|
|
tval.it_interval.tv_usec = 10000;
|
|
tval.it_value = tval.it_interval;
|
|
setitimer(ITIMER_VIRTUAL, &tval, NULL);
|
|
}
|
|
|
|
void
|
|
rb_thread_stop_timer()
|
|
{
|
|
struct itimerval tval;
|
|
|
|
if (!thread_init) return;
|
|
tval.it_interval.tv_sec = 0;
|
|
tval.it_interval.tv_usec = 0;
|
|
tval.it_value = tval.it_interval;
|
|
setitimer(ITIMER_VIRTUAL, &tval, NULL);
|
|
}
|
|
#else /* !(_THREAD_SAFE || HAVE_SETITIMER) */
|
|
int rb_thread_tick = THREAD_TICK;
|
|
#endif
|
|
|
|
NORETURN(static void rb_thread_terminated(rb_thread_t, int, enum thread_status));
|
|
static VALUE rb_thread_yield(VALUE, rb_thread_t);
|
|
|
|
static void
|
|
push_thread_anchor(struct ruby_env *ip)
|
|
{
|
|
ip->tag = prot_tag;
|
|
ip->frame = ruby_frame;
|
|
ip->scope = ruby_scope;
|
|
ip->cref = ruby_cref;
|
|
ip->prev = curr_thread->anchor;
|
|
curr_thread->anchor = ip;
|
|
}
|
|
|
|
static void
|
|
pop_thread_anchor(struct ruby_env *ip)
|
|
{
|
|
curr_thread->anchor = ip->prev;
|
|
}
|
|
|
|
static void
|
|
thread_insert(rb_thread_t th)
|
|
{
|
|
if (!th->next) {
|
|
/* merge in thread list */
|
|
th->prev = curr_thread;
|
|
curr_thread->next->prev = th;
|
|
th->next = curr_thread->next;
|
|
curr_thread->next = th;
|
|
th->priority = curr_thread->priority;
|
|
th->thgroup = curr_thread->thgroup;
|
|
}
|
|
}
|
|
|
|
static VALUE
|
|
rb_thread_start_0(VALUE (*fn)(ANYARGS), VALUE arg, rb_thread_t th)
|
|
{
|
|
volatile rb_thread_t th_save = th;
|
|
volatile VALUE thread = th->thread;
|
|
struct BLOCK *volatile saved_block = 0;
|
|
enum thread_status status;
|
|
int state;
|
|
|
|
if (OBJ_FROZEN(curr_thread->thgroup)) {
|
|
rb_raise(rb_eThreadError,
|
|
"can't start a new thread (frozen ThreadGroup)");
|
|
}
|
|
|
|
if (!thread_init) {
|
|
thread_init = 1;
|
|
#if defined(HAVE_SETITIMER) || defined(_THREAD_SAFE)
|
|
#if defined(POSIX_SIGNAL)
|
|
posix_signal(SIGVTALRM, catch_timer);
|
|
#else
|
|
signal(SIGVTALRM, catch_timer);
|
|
#endif
|
|
|
|
#ifdef _THREAD_SAFE
|
|
pthread_create(&time_thread, 0, thread_timer, 0);
|
|
#else
|
|
rb_thread_start_timer();
|
|
#endif
|
|
#endif
|
|
}
|
|
|
|
if (THREAD_SAVE_CONTEXT(curr_thread)) {
|
|
return thread;
|
|
}
|
|
|
|
if (fn == rb_thread_yield && curr_thread->anchor) {
|
|
struct ruby_env *ip = curr_thread->anchor;
|
|
new_thread.thread = th;
|
|
new_thread.proc = rb_block_proc();
|
|
new_thread.arg = (VALUE)arg;
|
|
th->anchor = ip;
|
|
thread_insert(th);
|
|
curr_thread = th;
|
|
ruby_longjmp((prot_tag = ip->tag)->buf, TAG_THREAD);
|
|
}
|
|
|
|
if (ruby_frame->block) { /* should nail down higher blocks */
|
|
blk_nail_down(ruby_frame->block);
|
|
}
|
|
scope_dup(ruby_scope);
|
|
|
|
thread_insert(th);
|
|
|
|
PUSH_TAG(PROT_NONE);
|
|
if ((state = EXEC_TAG()) == 0) {
|
|
if (THREAD_SAVE_CONTEXT(th) == 0) {
|
|
curr_thread = th;
|
|
th->result = (*fn)(arg, th);
|
|
}
|
|
th = th_save;
|
|
}
|
|
else if (TAG_DST()) {
|
|
th = th_save;
|
|
th->result = prot_tag->retval;
|
|
}
|
|
POP_TAG();
|
|
status = th->status;
|
|
|
|
if (th == main_thread) ruby_stop(state);
|
|
rb_thread_remove(th);
|
|
|
|
if (saved_block) {
|
|
blk_free(saved_block);
|
|
}
|
|
|
|
rb_thread_terminated(th, state, status);
|
|
return 0; /* not reached */
|
|
}
|
|
|
|
static void
|
|
rb_thread_terminated(rb_thread_t th, int state, enum thread_status status)
|
|
{
|
|
if (state && status != THREAD_TO_KILL && !NIL_P(ruby_errinfo)) {
|
|
th->flags |= THREAD_RAISED;
|
|
if (state == TAG_FATAL) {
|
|
/* fatal error within this thread, need to stop whole script */
|
|
main_thread->errinfo = ruby_errinfo;
|
|
rb_thread_cleanup();
|
|
}
|
|
else if (rb_obj_is_kind_of(ruby_errinfo, rb_eSystemExit)) {
|
|
if (th->safe >= 4) {
|
|
char buf[32];
|
|
|
|
sprintf(buf, "Insecure exit at level %d", th->safe);
|
|
th->errinfo = rb_exc_new2(rb_eSecurityError, buf);
|
|
}
|
|
else {
|
|
/* delegate exception to main_thread */
|
|
rb_thread_main_jump(ruby_errinfo, RESTORE_RAISE);
|
|
}
|
|
}
|
|
else if (th->safe < 4 && (ruby_thread_abort||th->abort||RTEST(ruby_debug))) {
|
|
/* exit on main_thread */
|
|
error_print();
|
|
rb_thread_main_jump(ruby_errinfo, RESTORE_EXIT);
|
|
}
|
|
else {
|
|
th->errinfo = ruby_errinfo;
|
|
}
|
|
}
|
|
rb_thread_schedule();
|
|
ruby_stop(0); /* last thread termination */
|
|
}
|
|
|
|
static VALUE
|
|
rb_thread_yield_0(VALUE arg)
|
|
{
|
|
return rb_thread_yield(arg, curr_thread);
|
|
}
|
|
|
|
static void
|
|
rb_thread_start_1(void)
|
|
{
|
|
rb_thread_t th = new_thread.thread;
|
|
volatile rb_thread_t th_save = th;
|
|
VALUE proc = new_thread.proc;
|
|
volatile VALUE arg = new_thread.arg;
|
|
struct ruby_env *ip = th->anchor;
|
|
enum thread_status status;
|
|
int state;
|
|
|
|
ruby_frame = ip->frame;
|
|
ruby_scope = ip->scope;
|
|
ruby_cref = ip->cref;
|
|
ruby_dyna_vars = ((struct BLOCK *)DATA_PTR(proc))->dyna_vars;
|
|
PUSH_FRAME(Qtrue);
|
|
*ruby_frame = *ip->frame;
|
|
ruby_frame->prev = ip->frame;
|
|
PUSH_TAG(PROT_NONE);
|
|
if ((state = EXEC_TAG()) == 0) {
|
|
if (THREAD_SAVE_CONTEXT(th) == 0) {
|
|
new_thread.thread = 0;
|
|
th->result = rb_proc_yield(RARRAY(arg)->len, RARRAY(arg)->ptr, proc);
|
|
}
|
|
th = th_save;
|
|
}
|
|
else if (TAG_DST()) {
|
|
th = th_save;
|
|
th->result = prot_tag->retval;
|
|
}
|
|
POP_TAG();
|
|
POP_FRAME();
|
|
status = th->status;
|
|
|
|
if (th == main_thread) ruby_stop(state);
|
|
rb_thread_remove(th);
|
|
rb_thread_terminated(th, state, status);
|
|
}
|
|
|
|
VALUE
|
|
rb_thread_create(VALUE (*fn)(ANYARGS), void *arg)
|
|
{
|
|
Init_stack((VALUE*)&arg);
|
|
return rb_thread_start_0(fn, (VALUE)arg, rb_thread_alloc(rb_cThread));
|
|
}
|
|
|
|
static VALUE
|
|
rb_thread_yield(VALUE arg, rb_thread_t th)
|
|
{
|
|
const ID *tbl;
|
|
|
|
scope_dup(ruby_frame->block->scope);
|
|
|
|
tbl = ruby_scope->local_tbl;
|
|
if (tbl) {
|
|
int n = *tbl++;
|
|
for (tbl += 2, n -= 2; n > 0; --n) { /* skip first 2 ($_ and $~) */
|
|
ID id = *tbl++;
|
|
if (id != 0 && !rb_is_local_id(id)) /* push flip states */
|
|
rb_dvar_push(id, Qfalse);
|
|
}
|
|
}
|
|
rb_dvar_push('_', Qnil);
|
|
rb_dvar_push('~', Qnil);
|
|
ruby_frame->block->dyna_vars = ruby_dyna_vars;
|
|
|
|
return rb_yield_0(arg, 0, 0, 0);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* Thread.new([arg]*) {|args| block } => thread
|
|
*
|
|
* Creates and runs a new thread to execute the instructions given in
|
|
* <i>block</i>. Any arguments passed to <code>Thread::new</code> are passed
|
|
* into the block.
|
|
*
|
|
* x = Thread.new { sleep 0.1; print "x"; print "y"; print "z" }
|
|
* a = Thread.new { print "a"; print "b"; sleep 0.2; print "c" }
|
|
* x.join # Let the threads finish before
|
|
* a.join # main thread exits...
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* abxyzc
|
|
*/
|
|
|
|
static VALUE
|
|
rb_thread_s_new(int argc, VALUE *argv, VALUE klass)
|
|
{
|
|
rb_thread_t th = rb_thread_alloc(klass);
|
|
volatile VALUE *pos;
|
|
|
|
pos = th->stk_pos;
|
|
rb_obj_call_init(th->thread, argc, argv);
|
|
if (th->stk_pos == 0) {
|
|
rb_raise(rb_eThreadError, "uninitialized thread - check `%s#initialize'",
|
|
rb_class2name(klass));
|
|
}
|
|
|
|
return th->thread;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Thread.new([arg]*) {|args| block } => thread
|
|
*
|
|
* Creates and runs a new thread to execute the instructions given in
|
|
* <i>block</i>. Any arguments passed to <code>Thread::new</code> are passed
|
|
* into the block.
|
|
*
|
|
* x = Thread.new { sleep 0.1; print "x"; print "y"; print "z" }
|
|
* a = Thread.new { print "a"; print "b"; sleep 0.2; print "c" }
|
|
* x.join # Let the threads finish before
|
|
* a.join # main thread exits...
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* abxyzc
|
|
*/
|
|
|
|
static VALUE
|
|
rb_thread_initialize(VALUE thread, VALUE args)
|
|
{
|
|
rb_thread_t th;
|
|
|
|
if (!rb_block_given_p()) {
|
|
rb_raise(rb_eThreadError, "must be called with a block");
|
|
}
|
|
th = rb_thread_check(thread);
|
|
if (th->stk_max) {
|
|
NODE *node = th->node;
|
|
if (!node) {
|
|
rb_raise(rb_eThreadError, "already initialized thread");
|
|
}
|
|
rb_raise(rb_eThreadError, "already initialized thread - %s:%d",
|
|
node->nd_file, nd_line(node));
|
|
}
|
|
return rb_thread_start_0(rb_thread_yield, args, th);
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Thread.start([args]*) {|args| block } => thread
|
|
* Thread.fork([args]*) {|args| block } => thread
|
|
*
|
|
* Basically the same as <code>Thread::new</code>. However, if class
|
|
* <code>Thread</code> is subclassed, then calling <code>start</code> in that
|
|
* subclass will not invoke the subclass's <code>initialize</code> method.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_thread_start(VALUE klass, VALUE args)
|
|
{
|
|
if (!rb_block_given_p()) {
|
|
rb_raise(rb_eThreadError, "must be called with a block");
|
|
}
|
|
return rb_thread_start_0(rb_thread_yield, args, rb_thread_alloc(klass));
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* thr.value => obj
|
|
*
|
|
* Waits for <i>thr</i> to complete (via <code>Thread#join</code>) and returns
|
|
* its value.
|
|
*
|
|
* a = Thread.new { 2 + 2 }
|
|
* a.value #=> 4
|
|
*/
|
|
|
|
static VALUE
|
|
rb_thread_value(VALUE thread)
|
|
{
|
|
rb_thread_t th = rb_thread_check(thread);
|
|
|
|
while (!rb_thread_join(th, DELAY_INFTY));
|
|
|
|
return th->result;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* thr.status => string, false or nil
|
|
*
|
|
* Returns the status of <i>thr</i>: ``<code>sleep</code>'' if <i>thr</i> is
|
|
* sleeping or waiting on I/O, ``<code>run</code>'' if <i>thr</i> is executing,
|
|
* ``<code>aborting</code>'' if <i>thr</i> is aborting, <code>false</code> if
|
|
* <i>thr</i> terminated normally, and <code>nil</code> if <i>thr</i>
|
|
* terminated with an exception.
|
|
*
|
|
* a = Thread.new { raise("die now") }
|
|
* b = Thread.new { Thread.stop }
|
|
* c = Thread.new { Thread.exit }
|
|
* d = Thread.new { sleep }
|
|
* Thread.critical = true
|
|
* d.kill #=> #<Thread:0x401b3678 aborting>
|
|
* a.status #=> nil
|
|
* b.status #=> "sleep"
|
|
* c.status #=> false
|
|
* d.status #=> "aborting"
|
|
* Thread.current.status #=> "run"
|
|
*/
|
|
|
|
static VALUE
|
|
rb_thread_status(VALUE thread)
|
|
{
|
|
rb_thread_t th = rb_thread_check(thread);
|
|
|
|
if (rb_thread_dead(th)) {
|
|
if (!NIL_P(th->errinfo) && (th->flags & THREAD_RAISED))
|
|
return Qnil;
|
|
return Qfalse;
|
|
}
|
|
|
|
return rb_str_new2(thread_status_name(th->status));
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* thr.alive? => true or false
|
|
*
|
|
* Returns <code>true</code> if <i>thr</i> is running or sleeping.
|
|
*
|
|
* thr = Thread.new { }
|
|
* thr.join #=> #<Thread:0x401b3fb0 dead>
|
|
* Thread.current.alive? #=> true
|
|
* thr.alive? #=> false
|
|
*/
|
|
|
|
static VALUE
|
|
rb_thread_alive_p(VALUE thread)
|
|
{
|
|
rb_thread_t th = rb_thread_check(thread);
|
|
|
|
if (rb_thread_dead(th)) return Qfalse;
|
|
return Qtrue;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* thr.stop? => true or false
|
|
*
|
|
* Returns <code>true</code> if <i>thr</i> is dead or sleeping.
|
|
*
|
|
* a = Thread.new { Thread.stop }
|
|
* b = Thread.current
|
|
* a.stop? #=> true
|
|
* b.stop? #=> false
|
|
*/
|
|
|
|
static VALUE
|
|
rb_thread_stop_p(VALUE thread)
|
|
{
|
|
rb_thread_t th = rb_thread_check(thread);
|
|
|
|
if (rb_thread_dead(th)) return Qtrue;
|
|
if (th->status == THREAD_STOPPED) return Qtrue;
|
|
return Qfalse;
|
|
}
|
|
|
|
static void
|
|
rb_thread_wait_other_threads(void)
|
|
{
|
|
rb_thread_t th;
|
|
int found;
|
|
|
|
/* wait other threads to terminate */
|
|
while (curr_thread != curr_thread->next) {
|
|
found = 0;
|
|
FOREACH_THREAD(th) {
|
|
if (th != curr_thread && th->status != THREAD_STOPPED) {
|
|
found = 1;
|
|
break;
|
|
}
|
|
}
|
|
END_FOREACH(th);
|
|
if (!found) return;
|
|
rb_thread_schedule();
|
|
}
|
|
}
|
|
|
|
static void
|
|
rb_thread_cleanup(void)
|
|
{
|
|
rb_thread_t curr, th;
|
|
|
|
curr = curr_thread;
|
|
while (curr->status == THREAD_KILLED) {
|
|
curr = curr->prev;
|
|
}
|
|
|
|
FOREACH_THREAD_FROM(curr, th) {
|
|
if (th->status != THREAD_KILLED) {
|
|
rb_thread_ready(th);
|
|
if (th != main_thread) {
|
|
th->thgroup = 0;
|
|
th->priority = 0;
|
|
th->status = THREAD_TO_KILL;
|
|
RDATA(th->thread)->dfree = NULL;
|
|
}
|
|
}
|
|
}
|
|
END_FOREACH_FROM(curr, th);
|
|
}
|
|
|
|
int rb_thread_critical;
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Thread.critical => true or false
|
|
*
|
|
* Returns the status of the global ``thread critical'' condition.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_thread_critical_get(void)
|
|
{
|
|
return rb_thread_critical?Qtrue:Qfalse;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Thread.critical= boolean => true or false
|
|
*
|
|
* Sets the status of the global ``thread critical'' condition and returns
|
|
* it. When set to <code>true</code>, prohibits scheduling of any existing
|
|
* thread. Does not block new threads from being created and run. Certain
|
|
* thread operations (such as stopping or killing a thread, sleeping in the
|
|
* current thread, and raising an exception) may cause a thread to be scheduled
|
|
* even when in a critical section. <code>Thread::critical</code> is not
|
|
* intended for daily use: it is primarily there to support folks writing
|
|
* threading libraries.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_thread_critical_set(VALUE obj, VALUE val)
|
|
{
|
|
rb_thread_critical = RTEST(val);
|
|
return val;
|
|
}
|
|
|
|
void
|
|
rb_thread_interrupt(void)
|
|
{
|
|
rb_thread_critical = 0;
|
|
rb_thread_ready(main_thread);
|
|
if (curr_thread == main_thread) {
|
|
rb_interrupt();
|
|
}
|
|
if (!rb_thread_dead(curr_thread)) {
|
|
if (THREAD_SAVE_CONTEXT(curr_thread)) {
|
|
return;
|
|
}
|
|
}
|
|
curr_thread = main_thread;
|
|
rb_thread_restore_context(curr_thread, RESTORE_INTERRUPT);
|
|
}
|
|
|
|
void
|
|
rb_thread_signal_raise(const char *sig)
|
|
{
|
|
if (sig == 0) return; /* should not happen */
|
|
rb_thread_critical = 0;
|
|
if (curr_thread == main_thread) {
|
|
rb_thread_ready(curr_thread);
|
|
rb_raise(rb_eSignal, "SIG%s", sig);
|
|
}
|
|
rb_thread_ready(main_thread);
|
|
if (!rb_thread_dead(curr_thread)) {
|
|
if (THREAD_SAVE_CONTEXT(curr_thread)) {
|
|
return;
|
|
}
|
|
}
|
|
th_signm = sig; /* should be literal */
|
|
curr_thread = main_thread;
|
|
rb_thread_restore_context(curr_thread, RESTORE_SIGNAL);
|
|
}
|
|
|
|
void
|
|
rb_thread_trap_eval(VALUE cmd, int sig, int safe)
|
|
{
|
|
rb_thread_critical = 0;
|
|
if (curr_thread == main_thread) {
|
|
rb_trap_eval(cmd, sig, safe);
|
|
return;
|
|
}
|
|
if (!rb_thread_dead(curr_thread)) {
|
|
if (THREAD_SAVE_CONTEXT(curr_thread)) {
|
|
return;
|
|
}
|
|
}
|
|
th_cmd = cmd;
|
|
th_sig = sig;
|
|
th_safe = safe;
|
|
curr_thread = main_thread;
|
|
rb_thread_restore_context(curr_thread, RESTORE_TRAP);
|
|
}
|
|
|
|
void
|
|
rb_thread_signal_exit(void)
|
|
{
|
|
VALUE args[2];
|
|
|
|
rb_thread_critical = 0;
|
|
if (curr_thread == main_thread) {
|
|
rb_thread_ready(curr_thread);
|
|
rb_exit(EXIT_SUCCESS);
|
|
}
|
|
args[0] = INT2NUM(EXIT_SUCCESS);
|
|
args[1] = rb_str_new2("exit");
|
|
rb_thread_ready(main_thread);
|
|
if (!rb_thread_dead(curr_thread)) {
|
|
if (THREAD_SAVE_CONTEXT(curr_thread)) {
|
|
return;
|
|
}
|
|
}
|
|
rb_thread_main_jump(rb_class_new_instance(2, args, rb_eSystemExit),
|
|
RESTORE_EXIT);
|
|
}
|
|
|
|
static VALUE
|
|
rb_thread_raise(int argc, VALUE *argv, rb_thread_t th)
|
|
{
|
|
volatile rb_thread_t th_save = th;
|
|
VALUE exc;
|
|
|
|
if (!th->next) {
|
|
rb_raise(rb_eArgError, "unstarted thread");
|
|
}
|
|
if (rb_thread_dead(th)) return Qnil;
|
|
exc = rb_make_exception(argc, argv);
|
|
if (curr_thread == th) {
|
|
rb_raise_jump(exc);
|
|
}
|
|
|
|
if (!rb_thread_dead(curr_thread)) {
|
|
if (THREAD_SAVE_CONTEXT(curr_thread)) {
|
|
return th_save->thread;
|
|
}
|
|
}
|
|
|
|
rb_thread_ready(th);
|
|
curr_thread = th;
|
|
|
|
th_raise_exception = exc;
|
|
th_raise_node = ruby_current_node;
|
|
rb_thread_restore_context(curr_thread, RESTORE_RAISE);
|
|
return Qnil; /* not reached */
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* thr.raise(exception)
|
|
*
|
|
* Raises an exception (see <code>Kernel::raise</code>) from <i>thr</i>. The
|
|
* caller does not have to be <i>thr</i>.
|
|
*
|
|
* Thread.abort_on_exception = true
|
|
* a = Thread.new { sleep(200) }
|
|
* a.raise("Gotcha")
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* prog.rb:3: Gotcha (RuntimeError)
|
|
* from prog.rb:2:in `initialize'
|
|
* from prog.rb:2:in `new'
|
|
* from prog.rb:2
|
|
*/
|
|
|
|
static VALUE
|
|
rb_thread_raise_m(int argc, VALUE *argv, VALUE thread)
|
|
{
|
|
rb_thread_t th = rb_thread_check(thread);
|
|
|
|
if (ruby_safe_level > th->safe) {
|
|
rb_secure(4);
|
|
}
|
|
rb_thread_raise(argc, argv, th);
|
|
return Qnil; /* not reached */
|
|
}
|
|
|
|
VALUE
|
|
rb_thread_local_aref(VALUE thread, ID id)
|
|
{
|
|
rb_thread_t th;
|
|
VALUE val;
|
|
|
|
th = rb_thread_check(thread);
|
|
if (ruby_safe_level >= 4 && th != curr_thread) {
|
|
rb_raise(rb_eSecurityError, "Insecure: thread locals");
|
|
}
|
|
if (!th->locals) return Qnil;
|
|
if (st_lookup(th->locals, id, &val)) {
|
|
return val;
|
|
}
|
|
return Qnil;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* thr[sym] => obj or nil
|
|
*
|
|
* Attribute Reference---Returns the value of a thread-local variable, using
|
|
* either a symbol or a string name. If the specified variable does not exist,
|
|
* returns <code>nil</code>.
|
|
*
|
|
* a = Thread.new { Thread.current["name"] = "A"; Thread.stop }
|
|
* b = Thread.new { Thread.current[:name] = "B"; Thread.stop }
|
|
* c = Thread.new { Thread.current["name"] = "C"; Thread.stop }
|
|
* Thread.list.each {|x| puts "#{x.inspect}: #{x[:name]}" }
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* #<Thread:0x401b3b3c sleep>: C
|
|
* #<Thread:0x401b3bc8 sleep>: B
|
|
* #<Thread:0x401b3c68 sleep>: A
|
|
* #<Thread:0x401bdf4c run>:
|
|
*/
|
|
|
|
static VALUE
|
|
rb_thread_aref(VALUE thread, VALUE id)
|
|
{
|
|
return rb_thread_local_aref(thread, rb_to_id(id));
|
|
}
|
|
|
|
VALUE
|
|
rb_thread_local_aset(VALUE thread, ID id, VALUE val)
|
|
{
|
|
rb_thread_t th = rb_thread_check(thread);
|
|
|
|
if (ruby_safe_level >= 4 && th != curr_thread) {
|
|
rb_raise(rb_eSecurityError, "Insecure: can't modify thread locals");
|
|
}
|
|
if (OBJ_FROZEN(thread)) rb_error_frozen("thread locals");
|
|
|
|
if (!th->locals) {
|
|
th->locals = st_init_numtable();
|
|
}
|
|
if (NIL_P(val)) {
|
|
st_delete(th->locals, (st_data_t*)&id, 0);
|
|
return Qnil;
|
|
}
|
|
st_insert(th->locals, id, val);
|
|
|
|
return val;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* thr[sym] = obj => obj
|
|
*
|
|
* Attribute Assignment---Sets or creates the value of a thread-local variable,
|
|
* using either a symbol or a string. See also <code>Thread#[]</code>.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_thread_aset(VALUE thread, VALUE id, VALUE val)
|
|
{
|
|
return rb_thread_local_aset(thread, rb_to_id(id), val);
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* thr.key?(sym) => true or false
|
|
*
|
|
* Returns <code>true</code> if the given string (or symbol) exists as a
|
|
* thread-local variable.
|
|
*
|
|
* me = Thread.current
|
|
* me[:oliver] = "a"
|
|
* me.key?(:oliver) #=> true
|
|
* me.key?(:stanley) #=> false
|
|
*/
|
|
|
|
static VALUE
|
|
rb_thread_key_p(VALUE thread, VALUE id)
|
|
{
|
|
rb_thread_t th = rb_thread_check(thread);
|
|
|
|
if (!th->locals) return Qfalse;
|
|
if (st_lookup(th->locals, rb_to_id(id), 0))
|
|
return Qtrue;
|
|
return Qfalse;
|
|
}
|
|
|
|
static int
|
|
thread_keys_i(ID key, VALUE value, VALUE ary)
|
|
{
|
|
rb_ary_push(ary, ID2SYM(key));
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* thr.keys => array
|
|
*
|
|
* Returns an an array of the names of the thread-local variables (as Symbols).
|
|
*
|
|
* thr = Thread.new do
|
|
* Thread.current[:cat] = 'meow'
|
|
* Thread.current["dog"] = 'woof'
|
|
* end
|
|
* thr.join #=> #<Thread:0x401b3f10 dead>
|
|
* thr.keys #=> [:dog, :cat]
|
|
*/
|
|
|
|
static VALUE
|
|
rb_thread_keys(VALUE thread)
|
|
{
|
|
rb_thread_t th = rb_thread_check(thread);
|
|
VALUE ary = rb_ary_new();
|
|
|
|
if (th->locals) {
|
|
st_foreach(th->locals, thread_keys_i, ary);
|
|
}
|
|
return ary;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* thr.inspect => string
|
|
*
|
|
* Dump the name, id, and status of _thr_ to a string.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_thread_inspect(VALUE thread)
|
|
{
|
|
char *cname = rb_obj_classname(thread);
|
|
rb_thread_t th = rb_thread_check(thread);
|
|
const char *status = thread_status_name(th->status);
|
|
VALUE str;
|
|
|
|
str = rb_sprintf("#<%s:%p %s>", cname, (void*)thread, status);
|
|
OBJ_INFECT(str, thread);
|
|
|
|
return str;
|
|
}
|
|
|
|
void
|
|
rb_thread_atfork(void)
|
|
{
|
|
rb_thread_t th;
|
|
|
|
if (rb_thread_alone()) return;
|
|
FOREACH_THREAD(th) {
|
|
if (th != curr_thread) {
|
|
rb_thread_die(th);
|
|
}
|
|
}
|
|
END_FOREACH(th);
|
|
main_thread = curr_thread;
|
|
curr_thread->next = curr_thread;
|
|
curr_thread->prev = curr_thread;
|
|
}
|
|
|
|
|
|
/*
|
|
* Document-class: Continuation
|
|
*
|
|
* Continuation objects are generated by
|
|
* <code>Kernel#callcc</code>. They hold a return address and execution
|
|
* context, allowing a nonlocal return to the end of the
|
|
* <code>callcc</code> block from anywhere within a program.
|
|
* Continuations are somewhat analogous to a structured version of C's
|
|
* <code>setjmp/longjmp</code> (although they contain more state, so
|
|
* you might consider them closer to threads).
|
|
*
|
|
* For instance:
|
|
*
|
|
* arr = [ "Freddie", "Herbie", "Ron", "Max", "Ringo" ]
|
|
* callcc{|$cc|}
|
|
* puts(message = arr.shift)
|
|
* $cc.call unless message =~ /Max/
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* Freddie
|
|
* Herbie
|
|
* Ron
|
|
* Max
|
|
*
|
|
* This (somewhat contrived) example allows the inner loop to abandon
|
|
* processing early:
|
|
*
|
|
* callcc {|cont|
|
|
* for i in 0..4
|
|
* print "\n#{i}: "
|
|
* for j in i*5...(i+1)*5
|
|
* cont.call() if j == 17
|
|
* printf "%3d", j
|
|
* end
|
|
* end
|
|
* }
|
|
* print "\n"
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* 0: 0 1 2 3 4
|
|
* 1: 5 6 7 8 9
|
|
* 2: 10 11 12 13 14
|
|
* 3: 15 16
|
|
*/
|
|
|
|
VALUE rb_cCont;
|
|
|
|
/*
|
|
* call-seq:
|
|
* callcc {|cont| block } => obj
|
|
*
|
|
* Generates a <code>Continuation</code> object, which it passes to the
|
|
* associated block. Performing a <em>cont</em><code>.call</code> will
|
|
* cause the <code>callcc</code> to return (as will falling through the
|
|
* end of the block). The value returned by the <code>callcc</code> is
|
|
* the value of the block, or the value passed to
|
|
* <em>cont</em><code>.call</code>. See class <code>Continuation</code>
|
|
* for more details. Also see <code>Kernel::throw</code> for
|
|
* an alternative mechanism for unwinding a call stack.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_callcc(VALUE self)
|
|
{
|
|
volatile VALUE cont;
|
|
rb_thread_t th;
|
|
volatile rb_thread_t th_save;
|
|
struct tag *tag;
|
|
struct RVarmap *vars;
|
|
|
|
THREAD_ALLOC(th);
|
|
cont = Data_Wrap_Struct(rb_cCont, thread_mark, thread_free, th);
|
|
|
|
scope_dup(ruby_scope);
|
|
for (tag=prot_tag; tag; tag=tag->prev) {
|
|
scope_dup(tag->scope);
|
|
}
|
|
th->thread = curr_thread->thread;
|
|
th->thgroup = cont_protect;
|
|
|
|
for (vars = ruby_dyna_vars; vars; vars = vars->next) {
|
|
if (FL_TEST(vars, DVAR_DONT_RECYCLE)) break;
|
|
FL_SET(vars, DVAR_DONT_RECYCLE);
|
|
}
|
|
th_save = th;
|
|
if (THREAD_SAVE_CONTEXT(th)) {
|
|
return th_save->result;
|
|
}
|
|
else {
|
|
return rb_yield(cont);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* cont.call(args, ...)
|
|
* cont[args, ...]
|
|
*
|
|
* Invokes the continuation. The program continues from the end of the
|
|
* <code>callcc</code> block. If no arguments are given, the original
|
|
* <code>callcc</code> returns <code>nil</code>. If one argument is
|
|
* given, <code>callcc</code> returns it. Otherwise, an array
|
|
* containing <i>args</i> is returned.
|
|
*
|
|
* callcc {|cont| cont.call } #=> nil
|
|
* callcc {|cont| cont.call 1 } #=> 1
|
|
* callcc {|cont| cont.call 1, 2, 3 } #=> [1, 2, 3]
|
|
*/
|
|
|
|
static VALUE
|
|
rb_cont_call(int argc, VALUE *argv, VALUE cont)
|
|
{
|
|
rb_thread_t th = rb_thread_check(cont);
|
|
|
|
if (th->thread != curr_thread->thread) {
|
|
rb_raise(rb_eRuntimeError, "continuation called across threads");
|
|
}
|
|
if (th->thgroup != cont_protect) {
|
|
rb_raise(rb_eRuntimeError, "continuation called across trap");
|
|
}
|
|
switch (argc) {
|
|
case 0:
|
|
th->result = Qnil;
|
|
break;
|
|
case 1:
|
|
th->result = argv[0];
|
|
break;
|
|
default:
|
|
th->result = rb_ary_new4(argc, argv);
|
|
break;
|
|
}
|
|
|
|
rb_thread_restore_context(th, RESTORE_NORMAL);
|
|
return Qnil;
|
|
}
|
|
|
|
struct thgroup {
|
|
int enclosed;
|
|
VALUE group;
|
|
};
|
|
|
|
|
|
/*
|
|
* Document-class: ThreadGroup
|
|
*
|
|
* <code>ThreadGroup</code> provides a means of keeping track of a number of
|
|
* threads as a group. A <code>Thread</code> can belong to only one
|
|
* <code>ThreadGroup</code> at a time; adding a thread to a new group will
|
|
* remove it from any previous group.
|
|
*
|
|
* Newly created threads belong to the same group as the thread from which they
|
|
* were created.
|
|
*/
|
|
|
|
static VALUE
|
|
thgroup_s_alloc(VALUE klass)
|
|
{
|
|
VALUE group;
|
|
struct thgroup *data;
|
|
|
|
group = Data_Make_Struct(klass, struct thgroup, 0, free, data);
|
|
data->enclosed = 0;
|
|
data->group = group;
|
|
|
|
return group;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* thgrp.list => array
|
|
*
|
|
* Returns an array of all existing <code>Thread</code> objects that belong to
|
|
* this group.
|
|
*
|
|
* ThreadGroup::Default.list #=> [#<Thread:0x401bdf4c run>]
|
|
*/
|
|
|
|
static VALUE
|
|
thgroup_list(VALUE group)
|
|
{
|
|
struct thgroup *data;
|
|
rb_thread_t th;
|
|
VALUE ary;
|
|
|
|
Data_Get_Struct(group, struct thgroup, data);
|
|
ary = rb_ary_new();
|
|
|
|
FOREACH_THREAD(th) {
|
|
if (th->thgroup == data->group) {
|
|
rb_ary_push(ary, th->thread);
|
|
}
|
|
}
|
|
END_FOREACH(th);
|
|
|
|
return ary;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* thgrp.enclose => thgrp
|
|
*
|
|
* Prevents threads from being added to or removed from the receiving
|
|
* <code>ThreadGroup</code>. New threads can still be started in an enclosed
|
|
* <code>ThreadGroup</code>.
|
|
*
|
|
* ThreadGroup::Default.enclose #=> #<ThreadGroup:0x4029d914>
|
|
* thr = Thread::new { Thread.stop } #=> #<Thread:0x402a7210 sleep>
|
|
* tg = ThreadGroup::new #=> #<ThreadGroup:0x402752d4>
|
|
* tg.add thr
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* ThreadError: can't move from the enclosed thread group
|
|
*/
|
|
|
|
static VALUE
|
|
thgroup_enclose(VALUE group)
|
|
{
|
|
struct thgroup *data;
|
|
|
|
Data_Get_Struct(group, struct thgroup, data);
|
|
data->enclosed = 1;
|
|
|
|
return group;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* thgrp.enclosed? => true or false
|
|
*
|
|
* Returns <code>true</code> if <em>thgrp</em> is enclosed. See also
|
|
* ThreadGroup#enclose.
|
|
*/
|
|
|
|
static VALUE
|
|
thgroup_enclosed_p(VALUE group)
|
|
{
|
|
struct thgroup *data;
|
|
|
|
Data_Get_Struct(group, struct thgroup, data);
|
|
if (data->enclosed) return Qtrue;
|
|
return Qfalse;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* thgrp.add(thread) => thgrp
|
|
*
|
|
* Adds the given <em>thread</em> to this group, removing it from any other
|
|
* group to which it may have previously belonged.
|
|
*
|
|
* puts "Initial group is #{ThreadGroup::Default.list}"
|
|
* tg = ThreadGroup.new
|
|
* t1 = Thread.new { sleep }
|
|
* t2 = Thread.new { sleep }
|
|
* puts "t1 is #{t1}"
|
|
* puts "t2 is #{t2}"
|
|
* tg.add(t1)
|
|
* puts "Initial group now #{ThreadGroup::Default.list}"
|
|
* puts "tg group now #{tg.list}"
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* Initial group is #<Thread:0x401bdf4c>
|
|
* t1 is #<Thread:0x401b3c90>
|
|
* t2 is #<Thread:0x401b3c18>
|
|
* Initial group now #<Thread:0x401b3c18>#<Thread:0x401bdf4c>
|
|
* tg group now #<Thread:0x401b3c90>
|
|
*/
|
|
|
|
static VALUE
|
|
thgroup_add(VALUE group, VALUE thread)
|
|
{
|
|
rb_thread_t th;
|
|
struct thgroup *data;
|
|
|
|
rb_secure(4);
|
|
th = rb_thread_check(thread);
|
|
if (!th->next || !th->prev) {
|
|
rb_raise(rb_eTypeError, "wrong argument type %s (expected Thread)",
|
|
rb_obj_classname(thread));
|
|
}
|
|
|
|
if (OBJ_FROZEN(group)) {
|
|
rb_raise(rb_eThreadError, "can't move to the frozen thread group");
|
|
}
|
|
Data_Get_Struct(group, struct thgroup, data);
|
|
if (data->enclosed) {
|
|
rb_raise(rb_eThreadError, "can't move to the enclosed thread group");
|
|
}
|
|
|
|
if (!th->thgroup) {
|
|
return Qnil;
|
|
}
|
|
if (OBJ_FROZEN(th->thgroup)) {
|
|
rb_raise(rb_eThreadError, "can't move from the frozen thread group");
|
|
}
|
|
Data_Get_Struct(th->thgroup, struct thgroup, data);
|
|
if (data->enclosed) {
|
|
rb_raise(rb_eThreadError, "can't move from the enclosed thread group");
|
|
}
|
|
|
|
th->thgroup = group;
|
|
return group;
|
|
}
|
|
|
|
/* variables for recursive traversals */
|
|
static ID recursive_key;
|
|
|
|
|
|
/*
|
|
* +Thread+ encapsulates the behavior of a thread of
|
|
* execution, including the main thread of the Ruby script.
|
|
*
|
|
* In the descriptions of the methods in this class, the parameter _sym_
|
|
* refers to a symbol, which is either a quoted string or a
|
|
* +Symbol+ (such as <code>:name</code>).
|
|
*/
|
|
|
|
void
|
|
Init_Thread(void)
|
|
{
|
|
VALUE cThGroup;
|
|
|
|
rb_eThreadError = rb_define_class("ThreadError", rb_eStandardError);
|
|
rb_cThread = rb_define_class("Thread", rb_cObject);
|
|
rb_undef_alloc_func(rb_cThread);
|
|
|
|
rb_define_singleton_method(rb_cThread, "new", rb_thread_s_new, -1);
|
|
rb_define_method(rb_cThread, "initialize", rb_thread_initialize, -2);
|
|
rb_define_singleton_method(rb_cThread, "start", rb_thread_start, -2);
|
|
rb_define_singleton_method(rb_cThread, "fork", rb_thread_start, -2);
|
|
|
|
rb_define_singleton_method(rb_cThread, "stop", rb_thread_stop, 0);
|
|
rb_define_singleton_method(rb_cThread, "kill", rb_thread_s_kill, 1);
|
|
rb_define_singleton_method(rb_cThread, "exit", rb_thread_exit, 0);
|
|
rb_define_singleton_method(rb_cThread, "pass", rb_thread_pass, 0);
|
|
rb_define_singleton_method(rb_cThread, "current", rb_thread_current, 0);
|
|
rb_define_singleton_method(rb_cThread, "main", rb_thread_main, 0);
|
|
rb_define_singleton_method(rb_cThread, "list", rb_thread_list, 0);
|
|
|
|
rb_define_singleton_method(rb_cThread, "critical", rb_thread_critical_get, 0);
|
|
rb_define_singleton_method(rb_cThread, "critical=", rb_thread_critical_set, 1);
|
|
|
|
rb_define_singleton_method(rb_cThread, "abort_on_exception", rb_thread_s_abort_exc, 0);
|
|
rb_define_singleton_method(rb_cThread, "abort_on_exception=", rb_thread_s_abort_exc_set, 1);
|
|
|
|
rb_define_method(rb_cThread, "run", rb_thread_run, 0);
|
|
rb_define_method(rb_cThread, "wakeup", rb_thread_wakeup, 0);
|
|
rb_define_method(rb_cThread, "kill", rb_thread_kill, 0);
|
|
rb_define_method(rb_cThread, "terminate", rb_thread_kill, 0);
|
|
rb_define_method(rb_cThread, "exit", rb_thread_kill, 0);
|
|
rb_define_method(rb_cThread, "value", rb_thread_value, 0);
|
|
rb_define_method(rb_cThread, "status", rb_thread_status, 0);
|
|
rb_define_method(rb_cThread, "join", rb_thread_join_m, -1);
|
|
rb_define_method(rb_cThread, "alive?", rb_thread_alive_p, 0);
|
|
rb_define_method(rb_cThread, "stop?", rb_thread_stop_p, 0);
|
|
rb_define_method(rb_cThread, "raise", rb_thread_raise_m, -1);
|
|
|
|
rb_define_method(rb_cThread, "abort_on_exception", rb_thread_abort_exc, 0);
|
|
rb_define_method(rb_cThread, "abort_on_exception=", rb_thread_abort_exc_set, 1);
|
|
|
|
rb_define_method(rb_cThread, "priority", rb_thread_priority, 0);
|
|
rb_define_method(rb_cThread, "priority=", rb_thread_priority_set, 1);
|
|
rb_define_method(rb_cThread, "safe_level", rb_thread_safe_level, 0);
|
|
rb_define_method(rb_cThread, "group", rb_thread_group, 0);
|
|
|
|
rb_define_method(rb_cThread, "[]", rb_thread_aref, 1);
|
|
rb_define_method(rb_cThread, "[]=", rb_thread_aset, 2);
|
|
rb_define_method(rb_cThread, "key?", rb_thread_key_p, 1);
|
|
rb_define_method(rb_cThread, "keys", rb_thread_keys, 0);
|
|
|
|
rb_define_method(rb_cThread, "inspect", rb_thread_inspect, 0);
|
|
|
|
rb_cCont = rb_define_class("Continuation", rb_cObject);
|
|
rb_undef_alloc_func(rb_cCont);
|
|
rb_undef_method(CLASS_OF(rb_cCont), "new");
|
|
rb_define_method(rb_cCont, "call", rb_cont_call, -1);
|
|
rb_define_method(rb_cCont, "[]", rb_cont_call, -1);
|
|
rb_define_global_function("callcc", rb_callcc, 0);
|
|
rb_global_variable(&cont_protect);
|
|
|
|
cThGroup = rb_define_class("ThreadGroup", rb_cObject);
|
|
rb_define_alloc_func(cThGroup, thgroup_s_alloc);
|
|
rb_define_method(cThGroup, "list", thgroup_list, 0);
|
|
rb_define_method(cThGroup, "enclose", thgroup_enclose, 0);
|
|
rb_define_method(cThGroup, "enclosed?", thgroup_enclosed_p, 0);
|
|
rb_define_method(cThGroup, "add", thgroup_add, 1);
|
|
rb_global_variable(&thgroup_default);
|
|
thgroup_default = rb_obj_alloc(cThGroup);
|
|
rb_define_const(cThGroup, "Default", thgroup_default);
|
|
|
|
/* allocate main thread */
|
|
main_thread = rb_thread_alloc(rb_cThread);
|
|
curr_thread = main_thread->prev = main_thread->next = main_thread;
|
|
recursive_key = rb_intern("__recursive_key__");
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* catch(symbol) {| | block } > obj
|
|
*
|
|
* +catch+ executes its block. If a +throw+ is
|
|
* executed, Ruby searches up its stack for a +catch+ block
|
|
* with a tag corresponding to the +throw+'s
|
|
* _symbol_. If found, that block is terminated, and
|
|
* +catch+ returns the value given to +throw+. If
|
|
* +throw+ is not called, the block terminates normally, and
|
|
* the value of +catch+ is the value of the last expression
|
|
* evaluated. +catch+ expressions may be nested, and the
|
|
* +throw+ call need not be in lexical scope.
|
|
*
|
|
* def routine(n)
|
|
* puts n
|
|
* throw :done if n <= 0
|
|
* routine(n-1)
|
|
* end
|
|
*
|
|
*
|
|
* catch(:done) { routine(3) }
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* 3
|
|
* 2
|
|
* 1
|
|
* 0
|
|
*/
|
|
|
|
static VALUE
|
|
rb_f_catch(VALUE dmy, VALUE tag)
|
|
{
|
|
int state;
|
|
VALUE val = Qnil; /* OK */
|
|
|
|
tag = ID2SYM(rb_to_id(tag));
|
|
PUSH_TAG(tag);
|
|
if ((state = EXEC_TAG()) == 0) {
|
|
val = rb_yield_0(tag, 0, 0, 0);
|
|
}
|
|
else if (state == TAG_THROW && tag == prot_tag->dst) {
|
|
val = prot_tag->retval;
|
|
state = 0;
|
|
}
|
|
POP_TAG();
|
|
if (state) JUMP_TAG(state);
|
|
|
|
return val;
|
|
}
|
|
|
|
VALUE
|
|
rb_catch(const char *tag, VALUE (*func)(ANYARGS), VALUE data)
|
|
{
|
|
VALUE vtag = ID2SYM(rb_intern(tag));
|
|
|
|
return rb_block_call(Qnil, rb_intern("catch"), 1, &vtag, func, data);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* throw(symbol [, obj])
|
|
*
|
|
* Transfers control to the end of the active +catch+ block
|
|
* waiting for _symbol_. Raises +NameError+ if there
|
|
* is no +catch+ block for the symbol. The optional second
|
|
* parameter supplies a return value for the +catch+ block,
|
|
* which otherwise defaults to +nil+. For examples, see
|
|
* <code>Kernel::catch</code>.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_f_throw(int argc, VALUE *argv)
|
|
{
|
|
VALUE tag, value;
|
|
struct tag *tt = prot_tag;
|
|
|
|
rb_scan_args(argc, argv, "11", &tag, &value);
|
|
tag = ID2SYM(rb_to_id(tag));
|
|
|
|
while (tt) {
|
|
if (tt->tag == tag) {
|
|
tt->dst = tag;
|
|
tt->retval = value;
|
|
break;
|
|
}
|
|
if (tt->tag == PROT_THREAD) {
|
|
rb_raise(rb_eThreadError, "uncaught throw `%s' in thread %p",
|
|
rb_id2name(SYM2ID(tag)),
|
|
curr_thread);
|
|
}
|
|
tt = tt->prev;
|
|
}
|
|
if (!tt) {
|
|
rb_name_error(SYM2ID(tag), "uncaught throw `%s'", rb_id2name(SYM2ID(tag)));
|
|
}
|
|
rb_trap_restore_mask();
|
|
JUMP_TAG(TAG_THROW);
|
|
#ifndef __GNUC__
|
|
return Qnil; /* not reached */
|
|
#endif
|
|
}
|
|
|
|
void
|
|
rb_throw(const char *tag, VALUE val)
|
|
{
|
|
VALUE argv[2];
|
|
|
|
argv[0] = ID2SYM(rb_intern(tag));
|
|
argv[1] = val;
|
|
rb_f_throw(2, argv);
|
|
}
|
|
|
|
static VALUE
|
|
recursive_check(VALUE obj)
|
|
{
|
|
VALUE hash = rb_thread_local_aref(rb_thread_current(), recursive_key);
|
|
|
|
if (NIL_P(hash) || TYPE(hash) != T_HASH) {
|
|
return Qfalse;
|
|
}
|
|
else {
|
|
VALUE list = rb_hash_aref(hash, ID2SYM(ruby_frame->this_func));
|
|
|
|
if (NIL_P(list) || TYPE(list) != T_ARRAY) return Qfalse;
|
|
return rb_ary_includes(list, rb_obj_id(obj));
|
|
}
|
|
}
|
|
|
|
static void
|
|
recursive_push(VALUE obj)
|
|
{
|
|
VALUE hash = rb_thread_local_aref(rb_thread_current(), recursive_key);
|
|
VALUE list, sym;
|
|
|
|
sym = ID2SYM(ruby_frame->this_func);
|
|
if (NIL_P(hash) || TYPE(hash) != T_HASH) {
|
|
hash = rb_hash_new();
|
|
rb_thread_local_aset(rb_thread_current(), recursive_key, hash);
|
|
list = Qnil;
|
|
}
|
|
else {
|
|
list = rb_hash_aref(hash, sym);
|
|
}
|
|
if (NIL_P(list) || TYPE(list) != T_ARRAY) {
|
|
list = rb_ary_new();
|
|
rb_hash_aset(hash, sym, list);
|
|
}
|
|
rb_ary_push(list, rb_obj_id(obj));
|
|
}
|
|
|
|
static void
|
|
recursive_pop(void)
|
|
{
|
|
VALUE hash = rb_thread_local_aref(rb_thread_current(), recursive_key);
|
|
VALUE list, sym;
|
|
|
|
sym = ID2SYM(ruby_frame->this_func);
|
|
if (NIL_P(hash) || TYPE(hash) != T_HASH) {
|
|
VALUE symname = rb_inspect(sym);
|
|
VALUE thrname = rb_inspect(rb_thread_current());
|
|
rb_raise(rb_eTypeError, "invalid inspect_tbl hash for %s in %s",
|
|
StringValuePtr(symname), StringValuePtr(thrname));
|
|
}
|
|
list = rb_hash_aref(hash, sym);
|
|
if (NIL_P(list) || TYPE(list) != T_ARRAY) {
|
|
VALUE symname = rb_inspect(sym);
|
|
VALUE thrname = rb_inspect(rb_thread_current());
|
|
rb_raise(rb_eTypeError, "invalid inspect_tbl list for %s in %s",
|
|
StringValuePtr(symname), StringValuePtr(thrname));
|
|
}
|
|
rb_ary_pop(list);
|
|
}
|
|
|
|
VALUE
|
|
rb_exec_recursive(VALUE (*func)(VALUE, VALUE, int), VALUE obj, VALUE arg)
|
|
{
|
|
if (recursive_check(obj)) {
|
|
return (*func)(obj, arg, Qtrue);
|
|
}
|
|
else {
|
|
VALUE result;
|
|
int state;
|
|
|
|
recursive_push(obj);
|
|
PUSH_TAG(PROT_NONE);
|
|
if ((state = EXEC_TAG()) == 0) {
|
|
result = (*func)(obj, arg, Qfalse);
|
|
}
|
|
POP_TAG();
|
|
recursive_pop();
|
|
if (state) JUMP_TAG(state);
|
|
return result;
|
|
}
|
|
}
|