зеркало из https://github.com/github/ruby.git
2184 строки
49 KiB
C
2184 строки
49 KiB
C
/**********************************************************************
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error.c -
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$Author$
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created at: Mon Aug 9 16:11:34 JST 1993
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Copyright (C) 1993-2007 Yukihiro Matsumoto
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**********************************************************************/
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#include "ruby/ruby.h"
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#include "ruby/st.h"
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#include "ruby/encoding.h"
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#include "internal.h"
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#include "vm_core.h"
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#include <stdio.h>
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#include <stdarg.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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#include <errno.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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#ifndef EXIT_SUCCESS
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#define EXIT_SUCCESS 0
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#endif
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#ifndef WIFEXITED
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#define WIFEXITED(status) 1
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#endif
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#ifndef WEXITSTATUS
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#define WEXITSTATUS(status) (status)
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#endif
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VALUE rb_eEAGAIN;
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VALUE rb_eEWOULDBLOCK;
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VALUE rb_eEINPROGRESS;
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extern const char ruby_description[];
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static const char REPORTBUG_MSG[] =
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"[NOTE]\n" \
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"You may have encountered a bug in the Ruby interpreter" \
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" or extension libraries.\n" \
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"Bug reports are welcome.\n" \
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""
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#if defined __APPLE__
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"Don't forget to include the above Crash Report log file.\n"
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#endif
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"For details: http://www.ruby-lang.org/bugreport.html\n\n" \
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;
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static const char *
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rb_strerrno(int err)
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{
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#define defined_error(name, num) if (err == (num)) return (name);
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#define undefined_error(name)
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#include "known_errors.inc"
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#undef defined_error
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#undef undefined_error
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return NULL;
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}
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static int
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err_position_0(char *buf, long len, const char *file, int line)
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{
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if (!file) {
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return 0;
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}
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else if (line == 0) {
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return snprintf(buf, len, "%s: ", file);
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}
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else {
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return snprintf(buf, len, "%s:%d: ", file, line);
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}
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}
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static VALUE
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compile_snprintf(rb_encoding *enc, const char *pre, const char *file, int line, const char *fmt, va_list args)
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{
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VALUE str = rb_enc_str_new(0, 0, enc);
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if (file) {
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rb_str_cat2(str, file);
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if (line) rb_str_catf(str, ":%d", line);
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rb_str_cat2(str, ": ");
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}
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if (pre) rb_str_cat2(str, pre);
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rb_str_vcatf(str, fmt, args);
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return str;
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}
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static void
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compile_err_append(VALUE mesg)
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{
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rb_thread_t *th = GET_THREAD();
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VALUE err = th->errinfo;
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rb_block_t *prev_base_block = th->base_block;
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th->base_block = 0;
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/* base_block should be zero while normal Ruby execution */
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/* after this line, any Ruby code *can* run */
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if (th->mild_compile_error) {
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if (RTEST(err)) {
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VALUE str = rb_obj_as_string(err);
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rb_str_cat2(str, "\n");
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rb_str_append(str, mesg);
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mesg = str;
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}
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err = rb_exc_new3(rb_eSyntaxError, mesg);
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th->errinfo = err;
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}
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else {
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if (!RTEST(err)) {
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err = rb_exc_new2(rb_eSyntaxError, "compile error");
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th->errinfo = err;
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}
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rb_str_cat2(mesg, "\n");
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rb_write_error_str(mesg);
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}
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/* returned to the parser world */
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th->base_block = prev_base_block;
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}
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void
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rb_compile_error_with_enc(const char *file, int line, void *enc, const char *fmt, ...)
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{
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va_list args;
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VALUE str;
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va_start(args, fmt);
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str = compile_snprintf(enc, NULL, file, line, fmt, args);
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va_end(args);
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compile_err_append(str);
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}
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void
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rb_compile_error(const char *file, int line, const char *fmt, ...)
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{
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va_list args;
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VALUE str;
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va_start(args, fmt);
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str = compile_snprintf(NULL, NULL, file, line, fmt, args);
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va_end(args);
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compile_err_append(str);
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}
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void
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rb_compile_error_append(const char *fmt, ...)
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{
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va_list args;
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VALUE str;
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va_start(args, fmt);
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str = rb_vsprintf(fmt, args);
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va_end(args);
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compile_err_append(str);
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}
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static void
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compile_warn_print(const char *file, int line, const char *fmt, va_list args)
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{
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VALUE str;
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str = compile_snprintf(NULL, "warning: ", file, line, fmt, args);
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rb_str_cat2(str, "\n");
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rb_write_error_str(str);
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}
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void
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rb_compile_warn(const char *file, int line, const char *fmt, ...)
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{
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va_list args;
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if (NIL_P(ruby_verbose)) return;
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va_start(args, fmt);
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compile_warn_print(file, line, fmt, args);
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va_end(args);
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}
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/* rb_compile_warning() reports only in verbose mode */
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void
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rb_compile_warning(const char *file, int line, const char *fmt, ...)
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{
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va_list args;
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if (!RTEST(ruby_verbose)) return;
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va_start(args, fmt);
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compile_warn_print(file, line, fmt, args);
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va_end(args);
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}
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static void
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warn_print(const char *fmt, va_list args)
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{
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VALUE str = rb_str_new(0, 0);
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VALUE file = rb_sourcefilename();
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if (!NIL_P(file)) {
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int line = rb_sourceline();
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str = rb_str_append(str, file);
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if (line) rb_str_catf(str, ":%d", line);
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rb_str_cat2(str, ": ");
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}
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rb_str_cat2(str, "warning: ");
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rb_str_vcatf(str, fmt, args);
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rb_str_cat2(str, "\n");
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rb_write_error_str(str);
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}
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void
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rb_warn(const char *fmt, ...)
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{
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va_list args;
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if (NIL_P(ruby_verbose)) return;
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va_start(args, fmt);
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warn_print(fmt, args);
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va_end(args);
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}
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/* rb_warning() reports only in verbose mode */
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void
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rb_warning(const char *fmt, ...)
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{
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va_list args;
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if (!RTEST(ruby_verbose)) return;
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va_start(args, fmt);
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warn_print(fmt, args);
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va_end(args);
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}
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/*
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* call-seq:
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* warn(msg, ...) -> nil
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*
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* Displays each of the given messages followed by a record separator on
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* STDERR unless warnings have been disabled (for example with the
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* <code>-W0</code> flag).
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*
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* warn("warning 1", "warning 2")
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*
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* <em>produces:</em>
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*
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* warning 1
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* warning 2
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*/
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static VALUE
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rb_warn_m(int argc, VALUE *argv, VALUE exc)
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{
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if (!NIL_P(ruby_verbose) && argc > 0) {
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rb_io_puts(argc, argv, rb_stderr);
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}
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return Qnil;
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}
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#define MAX_BUG_REPORTERS 0x100
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static struct bug_reporters {
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void (*func)(FILE *out, void *data);
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void *data;
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} bug_reporters[MAX_BUG_REPORTERS];
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static int bug_reporters_size;
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int
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rb_bug_reporter_add(void (*func)(FILE *, void *), void *data)
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{
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struct bug_reporters *reporter;
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if (bug_reporters_size >= MAX_BUG_REPORTERS) {
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return 0; /* failed to register */
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}
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reporter = &bug_reporters[bug_reporters_size++];
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reporter->func = func;
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reporter->data = data;
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return 1;
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}
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/* SIGSEGV handler might have a very small stack. Thus we need to use it carefully. */
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#define REPORT_BUG_BUFSIZ 256
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static FILE *
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bug_report_file(const char *file, int line)
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{
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char buf[REPORT_BUG_BUFSIZ];
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FILE *out = stderr;
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int len = err_position_0(buf, sizeof(buf), file, line);
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if ((ssize_t)fwrite(buf, 1, len, out) == (ssize_t)len ||
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(ssize_t)fwrite(buf, 1, len, (out = stdout)) == (ssize_t)len) {
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return out;
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}
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return NULL;
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}
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static void
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bug_report_begin(FILE *out, const char *fmt, va_list args)
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{
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char buf[REPORT_BUG_BUFSIZ];
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fputs("[BUG] ", out);
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vsnprintf(buf, sizeof(buf), fmt, args);
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fputs(buf, out);
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snprintf(buf, sizeof(buf), "\n%s\n\n", ruby_description);
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fputs(buf, out);
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}
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#define bug_report_begin(out, fmt) do { \
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va_list args; \
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va_start(args, fmt); \
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bug_report_begin(out, fmt, args); \
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va_end(args); \
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} while (0)
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static void
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bug_report_end(FILE *out)
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{
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/* call additional bug reporters */
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{
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int i;
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for (i=0; i<bug_reporters_size; i++) {
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struct bug_reporters *reporter = &bug_reporters[i];
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(*reporter->func)(out, reporter->data);
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}
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}
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fprintf(out, REPORTBUG_MSG);
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}
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#define report_bug(file, line, fmt, ctx) do { \
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FILE *out = bug_report_file(file, line); \
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if (out) { \
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bug_report_begin(out, fmt); \
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rb_vm_bugreport(ctx); \
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bug_report_end(out); \
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} \
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} while (0) \
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NORETURN(static void die(void));
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static void
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die(void)
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{
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#if defined(_WIN32) && defined(RUBY_MSVCRT_VERSION) && RUBY_MSVCRT_VERSION >= 80
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_set_abort_behavior( 0, _CALL_REPORTFAULT);
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#endif
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abort();
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}
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void
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rb_bug(const char *fmt, ...)
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{
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const char *file = NULL;
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int line = 0;
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if (GET_THREAD()) {
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file = rb_sourcefile();
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line = rb_sourceline();
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}
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report_bug(file, line, fmt, NULL);
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die();
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}
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void
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rb_bug_context(const void *ctx, const char *fmt, ...)
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{
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const char *file = NULL;
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int line = 0;
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if (GET_THREAD()) {
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file = rb_sourcefile();
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line = rb_sourceline();
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}
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report_bug(file, line, fmt, ctx);
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die();
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}
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void
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rb_bug_errno(const char *mesg, int errno_arg)
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{
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if (errno_arg == 0)
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rb_bug("%s: errno == 0 (NOERROR)", mesg);
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else {
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const char *errno_str = rb_strerrno(errno_arg);
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if (errno_str)
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rb_bug("%s: %s (%s)", mesg, strerror(errno_arg), errno_str);
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else
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rb_bug("%s: %s (%d)", mesg, strerror(errno_arg), errno_arg);
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}
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}
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/*
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* this is safe to call inside signal handler and timer thread
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* (which isn't a Ruby Thread object)
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*/
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#define write_or_abort(fd, str, len) (write((fd), (str), (len)) < 0 ? abort() : (void)0)
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#define WRITE_CONST(fd,str) write_or_abort((fd),(str),sizeof(str) - 1)
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void
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rb_async_bug_errno(const char *mesg, int errno_arg)
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{
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WRITE_CONST(2, "[ASYNC BUG] ");
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write_or_abort(2, mesg, strlen(mesg));
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WRITE_CONST(2, "\n");
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if (errno_arg == 0) {
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WRITE_CONST(2, "errno == 0 (NOERROR)\n");
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}
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else {
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const char *errno_str = rb_strerrno(errno_arg);
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if (!errno_str)
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errno_str = "undefined errno";
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write_or_abort(2, errno_str, strlen(errno_str));
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}
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WRITE_CONST(2, "\n\n");
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write_or_abort(2, ruby_description, strlen(ruby_description));
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WRITE_CONST(2, "\n\n");
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WRITE_CONST(2, REPORTBUG_MSG);
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abort();
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}
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void
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rb_compile_bug(const char *file, int line, const char *fmt, ...)
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{
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report_bug(file, line, fmt, NULL);
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abort();
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}
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static const char builtin_types[][10] = {
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"", /* 0x00, */
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"Object",
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"Class",
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"Module",
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"Float",
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"String",
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"Regexp",
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"Array",
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"Hash",
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"Struct",
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"Bignum",
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"File",
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"Data", /* internal use: wrapped C pointers */
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"MatchData", /* data of $~ */
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"Complex",
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"Rational",
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"", /* 0x10 */
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"nil",
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"true",
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"false",
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"Symbol", /* :symbol */
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"Fixnum",
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"", /* 0x16 */
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"", /* 0x17 */
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"", /* 0x18 */
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"", /* 0x19 */
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"", /* 0x1a */
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"undef", /* internal use: #undef; should not happen */
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"Node", /* internal use: syntax tree node */
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"iClass", /* internal use: mixed-in module holder */
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};
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const char *
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rb_builtin_type_name(int t)
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{
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const char *name;
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if ((unsigned int)t >= numberof(builtin_types)) return 0;
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name = builtin_types[t];
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if (*name) return name;
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return 0;
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}
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#define builtin_class_name rb_builtin_class_name
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const char *
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rb_builtin_class_name(VALUE x)
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{
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const char *etype;
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if (NIL_P(x)) {
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etype = "nil";
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}
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else if (FIXNUM_P(x)) {
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etype = "Fixnum";
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}
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else if (SYMBOL_P(x)) {
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etype = "Symbol";
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}
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else if (RB_TYPE_P(x, T_TRUE)) {
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etype = "true";
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}
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else if (RB_TYPE_P(x, T_FALSE)) {
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etype = "false";
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}
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else {
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etype = rb_obj_classname(x);
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}
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return etype;
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}
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void
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rb_check_type(VALUE x, int t)
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{
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int xt;
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if (x == Qundef) {
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rb_bug("undef leaked to the Ruby space");
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}
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xt = TYPE(x);
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if (xt != t || (xt == T_DATA && RTYPEDDATA_P(x))) {
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const char *tname = rb_builtin_type_name(t);
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if (tname) {
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rb_raise(rb_eTypeError, "wrong argument type %s (expected %s)",
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builtin_class_name(x), tname);
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}
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if (xt > T_MASK && xt <= 0x3f) {
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rb_fatal("unknown type 0x%x (0x%x given, probably comes from extension library for ruby 1.8)", t, xt);
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}
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rb_bug("unknown type 0x%x (0x%x given)", t, xt);
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}
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}
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int
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rb_typeddata_inherited_p(const rb_data_type_t *child, const rb_data_type_t *parent)
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{
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while (child) {
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if (child == parent) return 1;
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child = child->parent;
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}
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return 0;
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}
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int
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rb_typeddata_is_kind_of(VALUE obj, const rb_data_type_t *data_type)
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{
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if (!RB_TYPE_P(obj, T_DATA) ||
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!RTYPEDDATA_P(obj) || !rb_typeddata_inherited_p(RTYPEDDATA_TYPE(obj), data_type)) {
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return 0;
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}
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return 1;
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}
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void *
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rb_check_typeddata(VALUE obj, const rb_data_type_t *data_type)
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{
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const char *etype;
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static const char mesg[] = "wrong argument type %s (expected %s)";
|
|
|
|
if (!RB_TYPE_P(obj, T_DATA)) {
|
|
etype = builtin_class_name(obj);
|
|
rb_raise(rb_eTypeError, mesg, etype, data_type->wrap_struct_name);
|
|
}
|
|
if (!RTYPEDDATA_P(obj)) {
|
|
etype = rb_obj_classname(obj);
|
|
rb_raise(rb_eTypeError, mesg, etype, data_type->wrap_struct_name);
|
|
}
|
|
else if (!rb_typeddata_inherited_p(RTYPEDDATA_TYPE(obj), data_type)) {
|
|
etype = RTYPEDDATA_TYPE(obj)->wrap_struct_name;
|
|
rb_raise(rb_eTypeError, mesg, etype, data_type->wrap_struct_name);
|
|
}
|
|
return DATA_PTR(obj);
|
|
}
|
|
|
|
/* exception classes */
|
|
VALUE rb_eException;
|
|
VALUE rb_eSystemExit;
|
|
VALUE rb_eInterrupt;
|
|
VALUE rb_eSignal;
|
|
VALUE rb_eFatal;
|
|
VALUE rb_eStandardError;
|
|
VALUE rb_eRuntimeError;
|
|
VALUE rb_eTypeError;
|
|
VALUE rb_eArgError;
|
|
VALUE rb_eIndexError;
|
|
VALUE rb_eKeyError;
|
|
VALUE rb_eRangeError;
|
|
VALUE rb_eNameError;
|
|
VALUE rb_eEncodingError;
|
|
VALUE rb_eEncCompatError;
|
|
VALUE rb_eNoMethodError;
|
|
VALUE rb_eSecurityError;
|
|
VALUE rb_eNotImpError;
|
|
VALUE rb_eNoMemError;
|
|
VALUE rb_cNameErrorMesg;
|
|
|
|
VALUE rb_eScriptError;
|
|
VALUE rb_eSyntaxError;
|
|
VALUE rb_eLoadError;
|
|
|
|
VALUE rb_eSystemCallError;
|
|
VALUE rb_mErrno;
|
|
static VALUE rb_eNOERROR;
|
|
|
|
#undef rb_exc_new_cstr
|
|
|
|
VALUE
|
|
rb_exc_new(VALUE etype, const char *ptr, long len)
|
|
{
|
|
return rb_funcall(etype, rb_intern("new"), 1, rb_str_new(ptr, len));
|
|
}
|
|
|
|
VALUE
|
|
rb_exc_new_cstr(VALUE etype, const char *s)
|
|
{
|
|
return rb_exc_new(etype, s, strlen(s));
|
|
}
|
|
|
|
VALUE
|
|
rb_exc_new_str(VALUE etype, VALUE str)
|
|
{
|
|
StringValue(str);
|
|
return rb_funcall(etype, rb_intern("new"), 1, str);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* Exception.new(msg = nil) -> exception
|
|
*
|
|
* Construct a new Exception object, optionally passing in
|
|
* a message.
|
|
*/
|
|
|
|
static VALUE
|
|
exc_initialize(int argc, VALUE *argv, VALUE exc)
|
|
{
|
|
VALUE arg;
|
|
|
|
rb_scan_args(argc, argv, "01", &arg);
|
|
rb_iv_set(exc, "mesg", arg);
|
|
rb_iv_set(exc, "bt", Qnil);
|
|
|
|
return exc;
|
|
}
|
|
|
|
/*
|
|
* Document-method: exception
|
|
*
|
|
* call-seq:
|
|
* exc.exception(string) -> an_exception or exc
|
|
*
|
|
* With no argument, or if the argument is the same as the receiver,
|
|
* return the receiver. Otherwise, create a new
|
|
* exception object of the same class as the receiver, but with a
|
|
* message equal to <code>string.to_str</code>.
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
exc_exception(int argc, VALUE *argv, VALUE self)
|
|
{
|
|
VALUE exc;
|
|
|
|
if (argc == 0) return self;
|
|
if (argc == 1 && self == argv[0]) return self;
|
|
exc = rb_obj_clone(self);
|
|
exc_initialize(argc, argv, exc);
|
|
|
|
return exc;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* exception.to_s -> string
|
|
*
|
|
* Returns exception's message (or the name of the exception if
|
|
* no message is set).
|
|
*/
|
|
|
|
static VALUE
|
|
exc_to_s(VALUE exc)
|
|
{
|
|
VALUE mesg = rb_attr_get(exc, rb_intern("mesg"));
|
|
|
|
if (NIL_P(mesg)) return rb_class_name(CLASS_OF(exc));
|
|
return rb_String(mesg);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* exception.message -> string
|
|
*
|
|
* Returns the result of invoking <code>exception.to_s</code>.
|
|
* Normally this returns the exception's message or name. By
|
|
* supplying a to_str method, exceptions are agreeing to
|
|
* be used where Strings are expected.
|
|
*/
|
|
|
|
static VALUE
|
|
exc_message(VALUE exc)
|
|
{
|
|
return rb_funcall(exc, rb_intern("to_s"), 0, 0);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* exception.inspect -> string
|
|
*
|
|
* Return this exception's class name and message
|
|
*/
|
|
|
|
static VALUE
|
|
exc_inspect(VALUE exc)
|
|
{
|
|
VALUE str, klass;
|
|
|
|
klass = CLASS_OF(exc);
|
|
exc = rb_obj_as_string(exc);
|
|
if (RSTRING_LEN(exc) == 0) {
|
|
return rb_str_dup(rb_class_name(klass));
|
|
}
|
|
|
|
str = rb_str_buf_new2("#<");
|
|
klass = rb_class_name(klass);
|
|
rb_str_buf_append(str, klass);
|
|
rb_str_buf_cat(str, ": ", 2);
|
|
rb_str_buf_append(str, exc);
|
|
rb_str_buf_cat(str, ">", 1);
|
|
|
|
return str;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* exception.backtrace -> array
|
|
*
|
|
* Returns any backtrace associated with the exception. The backtrace
|
|
* is an array of strings, each containing either ``filename:lineNo: in
|
|
* `method''' or ``filename:lineNo.''
|
|
*
|
|
* def a
|
|
* raise "boom"
|
|
* end
|
|
*
|
|
* def b
|
|
* a()
|
|
* end
|
|
*
|
|
* begin
|
|
* b()
|
|
* rescue => detail
|
|
* print detail.backtrace.join("\n")
|
|
* end
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* prog.rb:2:in `a'
|
|
* prog.rb:6:in `b'
|
|
* prog.rb:10
|
|
*/
|
|
|
|
static VALUE
|
|
exc_backtrace(VALUE exc)
|
|
{
|
|
ID bt;
|
|
VALUE obj;
|
|
|
|
CONST_ID(bt, "bt");
|
|
obj = rb_attr_get(exc, bt);
|
|
|
|
if (rb_backtrace_p(obj)) {
|
|
obj = rb_backtrace_to_str_ary(obj);
|
|
/* rb_iv_set(exc, "bt", obj); */
|
|
}
|
|
|
|
return obj;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* exception.backtrace_locations -> array
|
|
*
|
|
* Returns any backtrace associated with the exception. This method is
|
|
* similar to Exception#backtrace, but the backtrace is an array of
|
|
* Thread::Backtrace::Location.
|
|
*
|
|
* Now, this method is not affected by Exception#set_backtrace().
|
|
*/
|
|
static VALUE
|
|
exc_backtrace_locations(VALUE exc)
|
|
{
|
|
ID bt_locations;
|
|
VALUE obj;
|
|
|
|
CONST_ID(bt_locations, "bt_locations");
|
|
obj = rb_attr_get(exc, bt_locations);
|
|
if (!NIL_P(obj)) {
|
|
obj = rb_backtrace_to_location_ary(obj);
|
|
}
|
|
return obj;
|
|
}
|
|
|
|
VALUE
|
|
rb_check_backtrace(VALUE bt)
|
|
{
|
|
long i;
|
|
static const char err[] = "backtrace must be Array of String";
|
|
|
|
if (!NIL_P(bt)) {
|
|
if (RB_TYPE_P(bt, T_STRING)) return rb_ary_new3(1, bt);
|
|
if (rb_backtrace_p(bt)) return bt;
|
|
if (!RB_TYPE_P(bt, T_ARRAY)) {
|
|
rb_raise(rb_eTypeError, err);
|
|
}
|
|
for (i=0;i<RARRAY_LEN(bt);i++) {
|
|
VALUE e = RARRAY_AREF(bt, i);
|
|
if (!RB_TYPE_P(e, T_STRING)) {
|
|
rb_raise(rb_eTypeError, err);
|
|
}
|
|
}
|
|
}
|
|
return bt;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* exc.set_backtrace(backtrace) -> array
|
|
*
|
|
* Sets the backtrace information associated with +exc+. The +backtrace+ must
|
|
* be an array of String objects or a single String in the format described
|
|
* in Exception#backtrace.
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
exc_set_backtrace(VALUE exc, VALUE bt)
|
|
{
|
|
return rb_iv_set(exc, "bt", rb_check_backtrace(bt));
|
|
}
|
|
|
|
VALUE
|
|
rb_exc_set_backtrace(VALUE exc, VALUE bt)
|
|
{
|
|
return exc_set_backtrace(exc, bt);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* exception.cause -> an_exception or nil
|
|
*
|
|
* Returns the previous exception ($!) at the time this exception was raised.
|
|
* This is useful for wrapping exceptions and retaining the original exception
|
|
* information.
|
|
*/
|
|
|
|
VALUE
|
|
exc_cause(VALUE exc)
|
|
{
|
|
ID id_cause;
|
|
CONST_ID(id_cause, "cause");
|
|
return rb_attr_get(exc, id_cause);
|
|
}
|
|
|
|
static VALUE
|
|
try_convert_to_exception(VALUE obj)
|
|
{
|
|
ID id_exception;
|
|
CONST_ID(id_exception, "exception");
|
|
return rb_check_funcall(obj, id_exception, 0, 0);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* exc == obj -> true or false
|
|
*
|
|
* Equality---If <i>obj</i> is not an <code>Exception</code>, returns
|
|
* <code>false</code>. Otherwise, returns <code>true</code> if <i>exc</i> and
|
|
* <i>obj</i> share same class, messages, and backtrace.
|
|
*/
|
|
|
|
static VALUE
|
|
exc_equal(VALUE exc, VALUE obj)
|
|
{
|
|
VALUE mesg, backtrace;
|
|
ID id_mesg;
|
|
|
|
if (exc == obj) return Qtrue;
|
|
CONST_ID(id_mesg, "mesg");
|
|
|
|
if (rb_obj_class(exc) != rb_obj_class(obj)) {
|
|
int status = 0;
|
|
ID id_message, id_backtrace;
|
|
CONST_ID(id_message, "message");
|
|
CONST_ID(id_backtrace, "backtrace");
|
|
|
|
obj = rb_protect(try_convert_to_exception, obj, &status);
|
|
if (status || obj == Qundef) {
|
|
rb_set_errinfo(Qnil);
|
|
return Qfalse;
|
|
}
|
|
if (rb_obj_class(exc) != rb_obj_class(obj)) return Qfalse;
|
|
mesg = rb_check_funcall(obj, id_message, 0, 0);
|
|
if (mesg == Qundef) return Qfalse;
|
|
backtrace = rb_check_funcall(obj, id_backtrace, 0, 0);
|
|
if (backtrace == Qundef) return Qfalse;
|
|
}
|
|
else {
|
|
mesg = rb_attr_get(obj, id_mesg);
|
|
backtrace = exc_backtrace(obj);
|
|
}
|
|
|
|
if (!rb_equal(rb_attr_get(exc, id_mesg), mesg))
|
|
return Qfalse;
|
|
if (!rb_equal(exc_backtrace(exc), backtrace))
|
|
return Qfalse;
|
|
return Qtrue;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* SystemExit.new -> system_exit
|
|
* SystemExit.new(status) -> system_exit
|
|
* SystemExit.new(status, msg) -> system_exit
|
|
* SystemExit.new(msg) -> system_exit
|
|
*
|
|
* Create a new +SystemExit+ exception with the given status and message.
|
|
* Status is true, false, or an integer.
|
|
* If status is not given, true is used.
|
|
*/
|
|
|
|
static VALUE
|
|
exit_initialize(int argc, VALUE *argv, VALUE exc)
|
|
{
|
|
VALUE status;
|
|
if (argc > 0) {
|
|
status = *argv;
|
|
|
|
switch (status) {
|
|
case Qtrue:
|
|
status = INT2FIX(EXIT_SUCCESS);
|
|
++argv;
|
|
--argc;
|
|
break;
|
|
case Qfalse:
|
|
status = INT2FIX(EXIT_FAILURE);
|
|
++argv;
|
|
--argc;
|
|
break;
|
|
default:
|
|
status = rb_check_to_int(status);
|
|
if (NIL_P(status)) {
|
|
status = INT2FIX(EXIT_SUCCESS);
|
|
}
|
|
else {
|
|
#if EXIT_SUCCESS != 0
|
|
if (status == INT2FIX(0))
|
|
status = INT2FIX(EXIT_SUCCESS);
|
|
#endif
|
|
++argv;
|
|
--argc;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
else {
|
|
status = INT2FIX(EXIT_SUCCESS);
|
|
}
|
|
rb_call_super(argc, argv);
|
|
rb_iv_set(exc, "status", status);
|
|
return exc;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* system_exit.status -> fixnum
|
|
*
|
|
* Return the status value associated with this system exit.
|
|
*/
|
|
|
|
static VALUE
|
|
exit_status(VALUE exc)
|
|
{
|
|
return rb_attr_get(exc, rb_intern("status"));
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* system_exit.success? -> true or false
|
|
*
|
|
* Returns +true+ if exiting successful, +false+ if not.
|
|
*/
|
|
|
|
static VALUE
|
|
exit_success_p(VALUE exc)
|
|
{
|
|
VALUE status_val = rb_attr_get(exc, rb_intern("status"));
|
|
int status;
|
|
|
|
if (NIL_P(status_val))
|
|
return Qtrue;
|
|
status = NUM2INT(status_val);
|
|
if (WIFEXITED(status) && WEXITSTATUS(status) == EXIT_SUCCESS)
|
|
return Qtrue;
|
|
|
|
return Qfalse;
|
|
}
|
|
|
|
void
|
|
rb_name_error(ID id, const char *fmt, ...)
|
|
{
|
|
VALUE exc, argv[2];
|
|
va_list args;
|
|
|
|
va_start(args, fmt);
|
|
argv[0] = rb_vsprintf(fmt, args);
|
|
va_end(args);
|
|
|
|
argv[1] = ID2SYM(id);
|
|
exc = rb_class_new_instance(2, argv, rb_eNameError);
|
|
rb_exc_raise(exc);
|
|
}
|
|
|
|
void
|
|
rb_name_error_str(VALUE str, const char *fmt, ...)
|
|
{
|
|
VALUE exc, argv[2];
|
|
va_list args;
|
|
|
|
va_start(args, fmt);
|
|
argv[0] = rb_vsprintf(fmt, args);
|
|
va_end(args);
|
|
|
|
argv[1] = str;
|
|
exc = rb_class_new_instance(2, argv, rb_eNameError);
|
|
rb_exc_raise(exc);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* NameError.new(msg [, name]) -> name_error
|
|
*
|
|
* Construct a new NameError exception. If given the <i>name</i>
|
|
* parameter may subsequently be examined using the <code>NameError.name</code>
|
|
* method.
|
|
*/
|
|
|
|
static VALUE
|
|
name_err_initialize(int argc, VALUE *argv, VALUE self)
|
|
{
|
|
VALUE name;
|
|
|
|
name = (argc > 1) ? argv[--argc] : Qnil;
|
|
rb_call_super(argc, argv);
|
|
rb_iv_set(self, "name", name);
|
|
return self;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* name_error.name -> string or nil
|
|
*
|
|
* Return the name associated with this NameError exception.
|
|
*/
|
|
|
|
static VALUE
|
|
name_err_name(VALUE self)
|
|
{
|
|
return rb_attr_get(self, rb_intern("name"));
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* NoMethodError.new(msg, name [, args]) -> no_method_error
|
|
*
|
|
* Construct a NoMethodError exception for a method of the given name
|
|
* called with the given arguments. The name may be accessed using
|
|
* the <code>#name</code> method on the resulting object, and the
|
|
* arguments using the <code>#args</code> method.
|
|
*/
|
|
|
|
static VALUE
|
|
nometh_err_initialize(int argc, VALUE *argv, VALUE self)
|
|
{
|
|
VALUE args = (argc > 2) ? argv[--argc] : Qnil;
|
|
name_err_initialize(argc, argv, self);
|
|
rb_iv_set(self, "args", args);
|
|
return self;
|
|
}
|
|
|
|
/* :nodoc: */
|
|
#define NAME_ERR_MESG_COUNT 3
|
|
|
|
static void
|
|
name_err_mesg_mark(void *p)
|
|
{
|
|
VALUE *ptr = p;
|
|
rb_gc_mark_locations(ptr, ptr+NAME_ERR_MESG_COUNT);
|
|
}
|
|
|
|
#define name_err_mesg_free RUBY_TYPED_DEFAULT_FREE
|
|
|
|
static size_t
|
|
name_err_mesg_memsize(const void *p)
|
|
{
|
|
return p ? (NAME_ERR_MESG_COUNT * sizeof(VALUE)) : 0;
|
|
}
|
|
|
|
static const rb_data_type_t name_err_mesg_data_type = {
|
|
"name_err_mesg",
|
|
{
|
|
name_err_mesg_mark,
|
|
name_err_mesg_free,
|
|
name_err_mesg_memsize,
|
|
},
|
|
NULL, NULL, RUBY_TYPED_FREE_IMMEDIATELY
|
|
};
|
|
|
|
/* :nodoc: */
|
|
VALUE
|
|
rb_name_err_mesg_new(VALUE obj, VALUE mesg, VALUE recv, VALUE method)
|
|
{
|
|
VALUE *ptr = ALLOC_N(VALUE, NAME_ERR_MESG_COUNT);
|
|
VALUE result;
|
|
|
|
ptr[0] = mesg;
|
|
ptr[1] = recv;
|
|
ptr[2] = method;
|
|
result = TypedData_Wrap_Struct(rb_cNameErrorMesg, &name_err_mesg_data_type, ptr);
|
|
RB_GC_GUARD(mesg);
|
|
RB_GC_GUARD(recv);
|
|
RB_GC_GUARD(method);
|
|
return result;
|
|
}
|
|
|
|
/* :nodoc: */
|
|
static VALUE
|
|
name_err_mesg_equal(VALUE obj1, VALUE obj2)
|
|
{
|
|
VALUE *ptr1, *ptr2;
|
|
int i;
|
|
|
|
if (obj1 == obj2) return Qtrue;
|
|
if (rb_obj_class(obj2) != rb_cNameErrorMesg)
|
|
return Qfalse;
|
|
|
|
TypedData_Get_Struct(obj1, VALUE, &name_err_mesg_data_type, ptr1);
|
|
TypedData_Get_Struct(obj2, VALUE, &name_err_mesg_data_type, ptr2);
|
|
for (i=0; i<NAME_ERR_MESG_COUNT; i++) {
|
|
if (!rb_equal(ptr1[i], ptr2[i]))
|
|
return Qfalse;
|
|
}
|
|
return Qtrue;
|
|
}
|
|
|
|
/* :nodoc: */
|
|
static VALUE
|
|
name_err_mesg_to_str(VALUE obj)
|
|
{
|
|
VALUE *ptr, mesg;
|
|
TypedData_Get_Struct(obj, VALUE, &name_err_mesg_data_type, ptr);
|
|
|
|
mesg = ptr[0];
|
|
if (NIL_P(mesg)) return Qnil;
|
|
else {
|
|
const char *desc = 0;
|
|
VALUE d = 0, args[NAME_ERR_MESG_COUNT];
|
|
int state = 0;
|
|
|
|
obj = ptr[1];
|
|
switch (obj) {
|
|
case Qnil:
|
|
desc = "nil";
|
|
break;
|
|
case Qtrue:
|
|
desc = "true";
|
|
break;
|
|
case Qfalse:
|
|
desc = "false";
|
|
break;
|
|
default:
|
|
d = rb_protect(rb_inspect, obj, &state);
|
|
if (state)
|
|
rb_set_errinfo(Qnil);
|
|
if (NIL_P(d) || RSTRING_LEN(d) > 65) {
|
|
d = rb_any_to_s(obj);
|
|
}
|
|
desc = RSTRING_PTR(d);
|
|
break;
|
|
}
|
|
if (desc && desc[0] != '#') {
|
|
d = d ? rb_str_dup(d) : rb_str_new2(desc);
|
|
rb_str_cat2(d, ":");
|
|
rb_str_append(d, rb_class_name(CLASS_OF(obj)));
|
|
}
|
|
args[0] = mesg;
|
|
args[1] = ptr[2];
|
|
args[2] = d;
|
|
mesg = rb_f_sprintf(NAME_ERR_MESG_COUNT, args);
|
|
}
|
|
return mesg;
|
|
}
|
|
|
|
/* :nodoc: */
|
|
static VALUE
|
|
name_err_mesg_dump(VALUE obj, VALUE limit)
|
|
{
|
|
return name_err_mesg_to_str(obj);
|
|
}
|
|
|
|
/* :nodoc: */
|
|
static VALUE
|
|
name_err_mesg_load(VALUE klass, VALUE str)
|
|
{
|
|
return str;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* no_method_error.args -> obj
|
|
*
|
|
* Return the arguments passed in as the third parameter to
|
|
* the constructor.
|
|
*/
|
|
|
|
static VALUE
|
|
nometh_err_args(VALUE self)
|
|
{
|
|
return rb_attr_get(self, rb_intern("args"));
|
|
}
|
|
|
|
void
|
|
rb_invalid_str(const char *str, const char *type)
|
|
{
|
|
VALUE s = rb_str_new2(str);
|
|
|
|
rb_raise(rb_eArgError, "invalid value for %s: %+"PRIsVALUE, type, s);
|
|
}
|
|
|
|
/*
|
|
* Document-module: Errno
|
|
*
|
|
* Ruby exception objects are subclasses of <code>Exception</code>.
|
|
* However, operating systems typically report errors using plain
|
|
* integers. Module <code>Errno</code> is created dynamically to map
|
|
* these operating system errors to Ruby classes, with each error
|
|
* number generating its own subclass of <code>SystemCallError</code>.
|
|
* As the subclass is created in module <code>Errno</code>, its name
|
|
* will start <code>Errno::</code>.
|
|
*
|
|
* The names of the <code>Errno::</code> classes depend on
|
|
* the environment in which Ruby runs. On a typical Unix or Windows
|
|
* platform, there are <code>Errno</code> classes such as
|
|
* <code>Errno::EACCES</code>, <code>Errno::EAGAIN</code>,
|
|
* <code>Errno::EINTR</code>, and so on.
|
|
*
|
|
* The integer operating system error number corresponding to a
|
|
* particular error is available as the class constant
|
|
* <code>Errno::</code><em>error</em><code>::Errno</code>.
|
|
*
|
|
* Errno::EACCES::Errno #=> 13
|
|
* Errno::EAGAIN::Errno #=> 11
|
|
* Errno::EINTR::Errno #=> 4
|
|
*
|
|
* The full list of operating system errors on your particular platform
|
|
* are available as the constants of <code>Errno</code>.
|
|
*
|
|
* Errno.constants #=> :E2BIG, :EACCES, :EADDRINUSE, :EADDRNOTAVAIL, ...
|
|
*/
|
|
|
|
static st_table *syserr_tbl;
|
|
|
|
static VALUE
|
|
set_syserr(int n, const char *name)
|
|
{
|
|
st_data_t error;
|
|
|
|
if (!st_lookup(syserr_tbl, n, &error)) {
|
|
error = rb_define_class_under(rb_mErrno, name, rb_eSystemCallError);
|
|
|
|
/* capture nonblock errnos for WaitReadable/WaitWritable subclasses */
|
|
switch (n) {
|
|
case EAGAIN:
|
|
rb_eEAGAIN = error;
|
|
|
|
#if defined(EWOULDBLOCK) && EWOULDBLOCK != EAGAIN
|
|
break;
|
|
case EWOULDBLOCK:
|
|
#endif
|
|
|
|
rb_eEWOULDBLOCK = error;
|
|
break;
|
|
case EINPROGRESS:
|
|
rb_eEINPROGRESS = error;
|
|
break;
|
|
}
|
|
|
|
rb_define_const(error, "Errno", INT2NUM(n));
|
|
st_add_direct(syserr_tbl, n, error);
|
|
}
|
|
else {
|
|
rb_define_const(rb_mErrno, name, error);
|
|
}
|
|
return error;
|
|
}
|
|
|
|
static VALUE
|
|
get_syserr(int n)
|
|
{
|
|
st_data_t error;
|
|
|
|
if (!st_lookup(syserr_tbl, n, &error)) {
|
|
char name[8]; /* some Windows' errno have 5 digits. */
|
|
|
|
snprintf(name, sizeof(name), "E%03d", n);
|
|
error = set_syserr(n, name);
|
|
}
|
|
return error;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* SystemCallError.new(msg, errno) -> system_call_error_subclass
|
|
*
|
|
* If _errno_ corresponds to a known system error code, constructs
|
|
* the appropriate <code>Errno</code> class for that error, otherwise
|
|
* constructs a generic <code>SystemCallError</code> object. The
|
|
* error number is subsequently available via the <code>errno</code>
|
|
* method.
|
|
*/
|
|
|
|
static VALUE
|
|
syserr_initialize(int argc, VALUE *argv, VALUE self)
|
|
{
|
|
#if !defined(_WIN32)
|
|
char *strerror();
|
|
#endif
|
|
const char *err;
|
|
VALUE mesg, error, func;
|
|
VALUE klass = rb_obj_class(self);
|
|
|
|
if (klass == rb_eSystemCallError) {
|
|
st_data_t data = (st_data_t)klass;
|
|
rb_scan_args(argc, argv, "12", &mesg, &error, &func);
|
|
if (argc == 1 && FIXNUM_P(mesg)) {
|
|
error = mesg; mesg = Qnil;
|
|
}
|
|
if (!NIL_P(error) && st_lookup(syserr_tbl, NUM2LONG(error), &data)) {
|
|
klass = (VALUE)data;
|
|
/* change class */
|
|
if (!RB_TYPE_P(self, T_OBJECT)) { /* insurance to avoid type crash */
|
|
rb_raise(rb_eTypeError, "invalid instance type");
|
|
}
|
|
RBASIC_SET_CLASS(self, klass);
|
|
}
|
|
}
|
|
else {
|
|
rb_scan_args(argc, argv, "02", &mesg, &func);
|
|
error = rb_const_get(klass, rb_intern("Errno"));
|
|
}
|
|
if (!NIL_P(error)) err = strerror(NUM2INT(error));
|
|
else err = "unknown error";
|
|
if (!NIL_P(mesg)) {
|
|
rb_encoding *le = rb_locale_encoding();
|
|
VALUE str = StringValue(mesg);
|
|
rb_encoding *me = rb_enc_get(mesg);
|
|
|
|
if (NIL_P(func))
|
|
mesg = rb_sprintf("%s - %"PRIsVALUE, err, mesg);
|
|
else
|
|
mesg = rb_sprintf("%s @ %"PRIsVALUE" - %"PRIsVALUE, err, func, mesg);
|
|
if (le != me && rb_enc_asciicompat(me)) {
|
|
le = me;
|
|
}/* else assume err is non ASCII string. */
|
|
OBJ_INFECT(mesg, str);
|
|
rb_enc_associate(mesg, le);
|
|
}
|
|
else {
|
|
mesg = rb_str_new2(err);
|
|
rb_enc_associate(mesg, rb_locale_encoding());
|
|
}
|
|
rb_call_super(1, &mesg);
|
|
rb_iv_set(self, "errno", error);
|
|
return self;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* system_call_error.errno -> fixnum
|
|
*
|
|
* Return this SystemCallError's error number.
|
|
*/
|
|
|
|
static VALUE
|
|
syserr_errno(VALUE self)
|
|
{
|
|
return rb_attr_get(self, rb_intern("errno"));
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* system_call_error === other -> true or false
|
|
*
|
|
* Return +true+ if the receiver is a generic +SystemCallError+, or
|
|
* if the error numbers +self+ and _other_ are the same.
|
|
*/
|
|
|
|
static VALUE
|
|
syserr_eqq(VALUE self, VALUE exc)
|
|
{
|
|
VALUE num, e;
|
|
ID en;
|
|
|
|
CONST_ID(en, "errno");
|
|
|
|
if (!rb_obj_is_kind_of(exc, rb_eSystemCallError)) {
|
|
if (!rb_respond_to(exc, en)) return Qfalse;
|
|
}
|
|
else if (self == rb_eSystemCallError) return Qtrue;
|
|
|
|
num = rb_attr_get(exc, rb_intern("errno"));
|
|
if (NIL_P(num)) {
|
|
num = rb_funcall(exc, en, 0, 0);
|
|
}
|
|
e = rb_const_get(self, rb_intern("Errno"));
|
|
if (FIXNUM_P(num) ? num == e : rb_equal(num, e))
|
|
return Qtrue;
|
|
return Qfalse;
|
|
}
|
|
|
|
|
|
/*
|
|
* Document-class: StandardError
|
|
*
|
|
* The most standard error types are subclasses of StandardError. A
|
|
* rescue clause without an explicit Exception class will rescue all
|
|
* StandardErrors (and only those).
|
|
*
|
|
* def foo
|
|
* raise "Oups"
|
|
* end
|
|
* foo rescue "Hello" #=> "Hello"
|
|
*
|
|
* On the other hand:
|
|
*
|
|
* require 'does/not/exist' rescue "Hi"
|
|
*
|
|
* <em>raises the exception:</em>
|
|
*
|
|
* LoadError: no such file to load -- does/not/exist
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* Document-class: SystemExit
|
|
*
|
|
* Raised by +exit+ to initiate the termination of the script.
|
|
*/
|
|
|
|
/*
|
|
* Document-class: SignalException
|
|
*
|
|
* Raised when a signal is received.
|
|
*
|
|
* begin
|
|
* Process.kill('HUP',Process.pid)
|
|
* sleep # wait for receiver to handle signal sent by Process.kill
|
|
* rescue SignalException => e
|
|
* puts "received Exception #{e}"
|
|
* end
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* received Exception SIGHUP
|
|
*/
|
|
|
|
/*
|
|
* Document-class: Interrupt
|
|
*
|
|
* Raised with the interrupt signal is received, typically because the
|
|
* user pressed on Control-C (on most posix platforms). As such, it is a
|
|
* subclass of +SignalException+.
|
|
*
|
|
* begin
|
|
* puts "Press ctrl-C when you get bored"
|
|
* loop {}
|
|
* rescue Interrupt => e
|
|
* puts "Note: You will typically use Signal.trap instead."
|
|
* end
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* Press ctrl-C when you get bored
|
|
*
|
|
* <em>then waits until it is interrupted with Control-C and then prints:</em>
|
|
*
|
|
* Note: You will typically use Signal.trap instead.
|
|
*/
|
|
|
|
/*
|
|
* Document-class: TypeError
|
|
*
|
|
* Raised when encountering an object that is not of the expected type.
|
|
*
|
|
* [1, 2, 3].first("two")
|
|
*
|
|
* <em>raises the exception:</em>
|
|
*
|
|
* TypeError: no implicit conversion of String into Integer
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* Document-class: ArgumentError
|
|
*
|
|
* Raised when the arguments are wrong and there isn't a more specific
|
|
* Exception class.
|
|
*
|
|
* Ex: passing the wrong number of arguments
|
|
*
|
|
* [1, 2, 3].first(4, 5)
|
|
*
|
|
* <em>raises the exception:</em>
|
|
*
|
|
* ArgumentError: wrong number of arguments (2 for 1)
|
|
*
|
|
* Ex: passing an argument that is not acceptable:
|
|
*
|
|
* [1, 2, 3].first(-4)
|
|
*
|
|
* <em>raises the exception:</em>
|
|
*
|
|
* ArgumentError: negative array size
|
|
*/
|
|
|
|
/*
|
|
* Document-class: IndexError
|
|
*
|
|
* Raised when the given index is invalid.
|
|
*
|
|
* a = [:foo, :bar]
|
|
* a.fetch(0) #=> :foo
|
|
* a[4] #=> nil
|
|
* a.fetch(4) #=> IndexError: index 4 outside of array bounds: -2...2
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* Document-class: KeyError
|
|
*
|
|
* Raised when the specified key is not found. It is a subclass of
|
|
* IndexError.
|
|
*
|
|
* h = {"foo" => :bar}
|
|
* h.fetch("foo") #=> :bar
|
|
* h.fetch("baz") #=> KeyError: key not found: "baz"
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* Document-class: RangeError
|
|
*
|
|
* Raised when a given numerical value is out of range.
|
|
*
|
|
* [1, 2, 3].drop(1 << 100)
|
|
*
|
|
* <em>raises the exception:</em>
|
|
*
|
|
* RangeError: bignum too big to convert into `long'
|
|
*/
|
|
|
|
/*
|
|
* Document-class: ScriptError
|
|
*
|
|
* ScriptError is the superclass for errors raised when a script
|
|
* can not be executed because of a +LoadError+,
|
|
* +NotImplementedError+ or a +SyntaxError+. Note these type of
|
|
* +ScriptErrors+ are not +StandardError+ and will not be
|
|
* rescued unless it is specified explicitly (or its ancestor
|
|
* +Exception+).
|
|
*/
|
|
|
|
/*
|
|
* Document-class: SyntaxError
|
|
*
|
|
* Raised when encountering Ruby code with an invalid syntax.
|
|
*
|
|
* eval("1+1=2")
|
|
*
|
|
* <em>raises the exception:</em>
|
|
*
|
|
* SyntaxError: (eval):1: syntax error, unexpected '=', expecting $end
|
|
*/
|
|
|
|
/*
|
|
* Document-class: LoadError
|
|
*
|
|
* Raised when a file required (a Ruby script, extension library, ...)
|
|
* fails to load.
|
|
*
|
|
* require 'this/file/does/not/exist'
|
|
*
|
|
* <em>raises the exception:</em>
|
|
*
|
|
* LoadError: no such file to load -- this/file/does/not/exist
|
|
*/
|
|
|
|
/*
|
|
* Document-class: NotImplementedError
|
|
*
|
|
* Raised when a feature is not implemented on the current platform. For
|
|
* example, methods depending on the +fsync+ or +fork+ system calls may
|
|
* raise this exception if the underlying operating system or Ruby
|
|
* runtime does not support them.
|
|
*
|
|
* Note that if +fork+ raises a +NotImplementedError+, then
|
|
* <code>respond_to?(:fork)</code> returns +false+.
|
|
*/
|
|
|
|
/*
|
|
* Document-class: NameError
|
|
*
|
|
* Raised when a given name is invalid or undefined.
|
|
*
|
|
* puts foo
|
|
*
|
|
* <em>raises the exception:</em>
|
|
*
|
|
* NameError: undefined local variable or method `foo' for main:Object
|
|
*
|
|
* Since constant names must start with a capital:
|
|
*
|
|
* Fixnum.const_set :answer, 42
|
|
*
|
|
* <em>raises the exception:</em>
|
|
*
|
|
* NameError: wrong constant name answer
|
|
*/
|
|
|
|
/*
|
|
* Document-class: NoMethodError
|
|
*
|
|
* Raised when a method is called on a receiver which doesn't have it
|
|
* defined and also fails to respond with +method_missing+.
|
|
*
|
|
* "hello".to_ary
|
|
*
|
|
* <em>raises the exception:</em>
|
|
*
|
|
* NoMethodError: undefined method `to_ary' for "hello":String
|
|
*/
|
|
|
|
/*
|
|
* Document-class: RuntimeError
|
|
*
|
|
* A generic error class raised when an invalid operation is attempted.
|
|
*
|
|
* [1, 2, 3].freeze << 4
|
|
*
|
|
* <em>raises the exception:</em>
|
|
*
|
|
* RuntimeError: can't modify frozen Array
|
|
*
|
|
* Kernel.raise will raise a RuntimeError if no Exception class is
|
|
* specified.
|
|
*
|
|
* raise "ouch"
|
|
*
|
|
* <em>raises the exception:</em>
|
|
*
|
|
* RuntimeError: ouch
|
|
*/
|
|
|
|
/*
|
|
* Document-class: SecurityError
|
|
*
|
|
* Raised when attempting a potential unsafe operation, typically when
|
|
* the $SAFE level is raised above 0.
|
|
*
|
|
* foo = "bar"
|
|
* proc = Proc.new do
|
|
* $SAFE = 3
|
|
* foo.untaint
|
|
* end
|
|
* proc.call
|
|
*
|
|
* <em>raises the exception:</em>
|
|
*
|
|
* SecurityError: Insecure: Insecure operation `untaint' at level 3
|
|
*/
|
|
|
|
/*
|
|
* Document-class: NoMemoryError
|
|
*
|
|
* Raised when memory allocation fails.
|
|
*/
|
|
|
|
/*
|
|
* Document-class: SystemCallError
|
|
*
|
|
* SystemCallError is the base class for all low-level
|
|
* platform-dependent errors.
|
|
*
|
|
* The errors available on the current platform are subclasses of
|
|
* SystemCallError and are defined in the Errno module.
|
|
*
|
|
* File.open("does/not/exist")
|
|
*
|
|
* <em>raises the exception:</em>
|
|
*
|
|
* Errno::ENOENT: No such file or directory - does/not/exist
|
|
*/
|
|
|
|
/*
|
|
* Document-class: EncodingError
|
|
*
|
|
* EncodingError is the base class for encoding errors.
|
|
*/
|
|
|
|
/*
|
|
* Document-class: Encoding::CompatibilityError
|
|
*
|
|
* Raised by Encoding and String methods when the source encoding is
|
|
* incompatible with the target encoding.
|
|
*/
|
|
|
|
/*
|
|
* Document-class: fatal
|
|
*
|
|
* fatal is an Exception that is raised when ruby has encountered a fatal
|
|
* error and must exit. You are not able to rescue fatal.
|
|
*/
|
|
|
|
/*
|
|
* Document-class: NameError::message
|
|
* :nodoc:
|
|
*/
|
|
|
|
/*
|
|
* Descendants of class Exception are used to communicate between
|
|
* Kernel#raise and +rescue+ statements in <code>begin ... end</code> blocks.
|
|
* Exception objects carry information about the exception -- its type (the
|
|
* exception's class name), an optional descriptive string, and optional
|
|
* traceback information. Exception subclasses may add additional
|
|
* information like NameError#name.
|
|
*
|
|
* Programs may make subclasses of Exception, typically of StandardError or
|
|
* RuntimeError, to provide custom classes and add additional information.
|
|
* See the subclass list below for defaults for +raise+ and +rescue+.
|
|
*
|
|
* When an exception has been raised but not yet handled (in +rescue+,
|
|
* +ensure+, +at_exit+ and +END+ blocks) the global variable <code>$!</code>
|
|
* will contain the current exception and <code>$@</code> contains the
|
|
* current exception's backtrace.
|
|
*
|
|
* It is recommended that a library should have one subclass of StandardError
|
|
* or RuntimeError and have specific exception types inherit from it. This
|
|
* allows the user to rescue a generic exception type to catch all exceptions
|
|
* the library may raise even if future versions of the library add new
|
|
* exception subclasses.
|
|
*
|
|
* For example:
|
|
*
|
|
* class MyLibrary
|
|
* class Error < RuntimeError
|
|
* end
|
|
*
|
|
* class WidgetError < Error
|
|
* end
|
|
*
|
|
* class FrobError < Error
|
|
* end
|
|
*
|
|
* end
|
|
*
|
|
* To handle both WidgetError and FrobError the library user can rescue
|
|
* MyLibrary::Error.
|
|
*
|
|
* The built-in subclasses of Exception are:
|
|
*
|
|
* * NoMemoryError
|
|
* * ScriptError
|
|
* * LoadError
|
|
* * NotImplementedError
|
|
* * SyntaxError
|
|
* * SecurityError
|
|
* * SignalException
|
|
* * Interrupt
|
|
* * StandardError -- default for +rescue+
|
|
* * ArgumentError
|
|
* * EncodingError
|
|
* * FiberError
|
|
* * IOError
|
|
* * EOFError
|
|
* * IndexError
|
|
* * KeyError
|
|
* * StopIteration
|
|
* * LocalJumpError
|
|
* * NameError
|
|
* * NoMethodError
|
|
* * RangeError
|
|
* * FloatDomainError
|
|
* * RegexpError
|
|
* * RuntimeError -- default for +raise+
|
|
* * SystemCallError
|
|
* * Errno::*
|
|
* * ThreadError
|
|
* * TypeError
|
|
* * ZeroDivisionError
|
|
* * SystemExit
|
|
* * SystemStackError
|
|
* * fatal -- impossible to rescue
|
|
*/
|
|
|
|
void
|
|
Init_Exception(void)
|
|
{
|
|
rb_eException = rb_define_class("Exception", rb_cObject);
|
|
rb_define_singleton_method(rb_eException, "exception", rb_class_new_instance, -1);
|
|
rb_define_method(rb_eException, "exception", exc_exception, -1);
|
|
rb_define_method(rb_eException, "initialize", exc_initialize, -1);
|
|
rb_define_method(rb_eException, "==", exc_equal, 1);
|
|
rb_define_method(rb_eException, "to_s", exc_to_s, 0);
|
|
rb_define_method(rb_eException, "message", exc_message, 0);
|
|
rb_define_method(rb_eException, "inspect", exc_inspect, 0);
|
|
rb_define_method(rb_eException, "backtrace", exc_backtrace, 0);
|
|
rb_define_method(rb_eException, "backtrace_locations", exc_backtrace_locations, 0);
|
|
rb_define_method(rb_eException, "set_backtrace", exc_set_backtrace, 1);
|
|
rb_define_method(rb_eException, "cause", exc_cause, 0);
|
|
|
|
rb_eSystemExit = rb_define_class("SystemExit", rb_eException);
|
|
rb_define_method(rb_eSystemExit, "initialize", exit_initialize, -1);
|
|
rb_define_method(rb_eSystemExit, "status", exit_status, 0);
|
|
rb_define_method(rb_eSystemExit, "success?", exit_success_p, 0);
|
|
|
|
rb_eFatal = rb_define_class("fatal", rb_eException);
|
|
rb_eSignal = rb_define_class("SignalException", rb_eException);
|
|
rb_eInterrupt = rb_define_class("Interrupt", rb_eSignal);
|
|
|
|
rb_eStandardError = rb_define_class("StandardError", rb_eException);
|
|
rb_eTypeError = rb_define_class("TypeError", rb_eStandardError);
|
|
rb_eArgError = rb_define_class("ArgumentError", rb_eStandardError);
|
|
rb_eIndexError = rb_define_class("IndexError", rb_eStandardError);
|
|
rb_eKeyError = rb_define_class("KeyError", rb_eIndexError);
|
|
rb_eRangeError = rb_define_class("RangeError", rb_eStandardError);
|
|
|
|
rb_eScriptError = rb_define_class("ScriptError", rb_eException);
|
|
rb_eSyntaxError = rb_define_class("SyntaxError", rb_eScriptError);
|
|
|
|
rb_eLoadError = rb_define_class("LoadError", rb_eScriptError);
|
|
/* the path failed to load */
|
|
rb_attr(rb_eLoadError, rb_intern_const("path"), 1, 0, Qfalse);
|
|
|
|
rb_eNotImpError = rb_define_class("NotImplementedError", rb_eScriptError);
|
|
|
|
rb_eNameError = rb_define_class("NameError", rb_eStandardError);
|
|
rb_define_method(rb_eNameError, "initialize", name_err_initialize, -1);
|
|
rb_define_method(rb_eNameError, "name", name_err_name, 0);
|
|
rb_cNameErrorMesg = rb_define_class_under(rb_eNameError, "message", rb_cData);
|
|
rb_define_singleton_method(rb_cNameErrorMesg, "!", rb_name_err_mesg_new, NAME_ERR_MESG_COUNT);
|
|
rb_define_method(rb_cNameErrorMesg, "==", name_err_mesg_equal, 1);
|
|
rb_define_method(rb_cNameErrorMesg, "to_str", name_err_mesg_to_str, 0);
|
|
rb_define_method(rb_cNameErrorMesg, "_dump", name_err_mesg_dump, 1);
|
|
rb_define_singleton_method(rb_cNameErrorMesg, "_load", name_err_mesg_load, 1);
|
|
rb_eNoMethodError = rb_define_class("NoMethodError", rb_eNameError);
|
|
rb_define_method(rb_eNoMethodError, "initialize", nometh_err_initialize, -1);
|
|
rb_define_method(rb_eNoMethodError, "args", nometh_err_args, 0);
|
|
|
|
rb_eRuntimeError = rb_define_class("RuntimeError", rb_eStandardError);
|
|
rb_eSecurityError = rb_define_class("SecurityError", rb_eException);
|
|
rb_eNoMemError = rb_define_class("NoMemoryError", rb_eException);
|
|
rb_eEncodingError = rb_define_class("EncodingError", rb_eStandardError);
|
|
rb_eEncCompatError = rb_define_class_under(rb_cEncoding, "CompatibilityError", rb_eEncodingError);
|
|
|
|
syserr_tbl = st_init_numtable();
|
|
rb_eSystemCallError = rb_define_class("SystemCallError", rb_eStandardError);
|
|
rb_define_method(rb_eSystemCallError, "initialize", syserr_initialize, -1);
|
|
rb_define_method(rb_eSystemCallError, "errno", syserr_errno, 0);
|
|
rb_define_singleton_method(rb_eSystemCallError, "===", syserr_eqq, 1);
|
|
|
|
rb_mErrno = rb_define_module("Errno");
|
|
|
|
rb_define_global_function("warn", rb_warn_m, -1);
|
|
}
|
|
|
|
void
|
|
rb_enc_raise(rb_encoding *enc, VALUE exc, const char *fmt, ...)
|
|
{
|
|
va_list args;
|
|
VALUE mesg;
|
|
|
|
va_start(args, fmt);
|
|
mesg = rb_enc_vsprintf(enc, fmt, args);
|
|
va_end(args);
|
|
|
|
rb_exc_raise(rb_exc_new3(exc, mesg));
|
|
}
|
|
|
|
void
|
|
rb_raise(VALUE exc, const char *fmt, ...)
|
|
{
|
|
va_list args;
|
|
VALUE mesg;
|
|
|
|
va_start(args, fmt);
|
|
mesg = rb_vsprintf(fmt, args);
|
|
va_end(args);
|
|
rb_exc_raise(rb_exc_new3(exc, mesg));
|
|
}
|
|
|
|
NORETURN(static void raise_loaderror(VALUE path, VALUE mesg));
|
|
|
|
static void
|
|
raise_loaderror(VALUE path, VALUE mesg)
|
|
{
|
|
VALUE err = rb_exc_new3(rb_eLoadError, mesg);
|
|
rb_ivar_set(err, rb_intern("@path"), path);
|
|
rb_exc_raise(err);
|
|
}
|
|
|
|
void
|
|
rb_loaderror(const char *fmt, ...)
|
|
{
|
|
va_list args;
|
|
VALUE mesg;
|
|
|
|
va_start(args, fmt);
|
|
mesg = rb_enc_vsprintf(rb_locale_encoding(), fmt, args);
|
|
va_end(args);
|
|
raise_loaderror(Qnil, mesg);
|
|
}
|
|
|
|
void
|
|
rb_loaderror_with_path(VALUE path, const char *fmt, ...)
|
|
{
|
|
va_list args;
|
|
VALUE mesg;
|
|
|
|
va_start(args, fmt);
|
|
mesg = rb_enc_vsprintf(rb_locale_encoding(), fmt, args);
|
|
va_end(args);
|
|
raise_loaderror(path, mesg);
|
|
}
|
|
|
|
void
|
|
rb_notimplement(void)
|
|
{
|
|
rb_raise(rb_eNotImpError,
|
|
"%s() function is unimplemented on this machine",
|
|
rb_id2name(rb_frame_this_func()));
|
|
}
|
|
|
|
void
|
|
rb_fatal(const char *fmt, ...)
|
|
{
|
|
va_list args;
|
|
VALUE mesg;
|
|
|
|
va_start(args, fmt);
|
|
mesg = rb_vsprintf(fmt, args);
|
|
va_end(args);
|
|
|
|
rb_exc_fatal(rb_exc_new3(rb_eFatal, mesg));
|
|
}
|
|
|
|
static VALUE
|
|
make_errno_exc(const char *mesg)
|
|
{
|
|
int n = errno;
|
|
|
|
errno = 0;
|
|
if (n == 0) {
|
|
rb_bug("rb_sys_fail(%s) - errno == 0", mesg ? mesg : "");
|
|
}
|
|
return rb_syserr_new(n, mesg);
|
|
}
|
|
|
|
static VALUE
|
|
make_errno_exc_str(VALUE mesg)
|
|
{
|
|
int n = errno;
|
|
|
|
errno = 0;
|
|
if (!mesg) mesg = Qnil;
|
|
if (n == 0) {
|
|
const char *s = !NIL_P(mesg) ? RSTRING_PTR(mesg) : "";
|
|
rb_bug("rb_sys_fail_str(%s) - errno == 0", s);
|
|
}
|
|
return rb_syserr_new_str(n, mesg);
|
|
}
|
|
|
|
VALUE
|
|
rb_syserr_new(int n, const char *mesg)
|
|
{
|
|
VALUE arg;
|
|
arg = mesg ? rb_str_new2(mesg) : Qnil;
|
|
return rb_syserr_new_str(n, arg);
|
|
}
|
|
|
|
VALUE
|
|
rb_syserr_new_str(int n, VALUE arg)
|
|
{
|
|
return rb_class_new_instance(1, &arg, get_syserr(n));
|
|
}
|
|
|
|
void
|
|
rb_syserr_fail(int e, const char *mesg)
|
|
{
|
|
rb_exc_raise(rb_syserr_new(e, mesg));
|
|
}
|
|
|
|
void
|
|
rb_syserr_fail_str(int e, VALUE mesg)
|
|
{
|
|
rb_exc_raise(rb_syserr_new_str(e, mesg));
|
|
}
|
|
|
|
void
|
|
rb_sys_fail(const char *mesg)
|
|
{
|
|
rb_exc_raise(make_errno_exc(mesg));
|
|
}
|
|
|
|
void
|
|
rb_sys_fail_str(VALUE mesg)
|
|
{
|
|
rb_exc_raise(make_errno_exc_str(mesg));
|
|
}
|
|
|
|
#ifdef RUBY_FUNCTION_NAME_STRING
|
|
void
|
|
rb_sys_fail_path_in(const char *func_name, VALUE path)
|
|
{
|
|
int n = errno;
|
|
|
|
errno = 0;
|
|
rb_syserr_fail_path_in(func_name, n, path);
|
|
}
|
|
|
|
void
|
|
rb_syserr_fail_path_in(const char *func_name, int n, VALUE path)
|
|
{
|
|
VALUE args[2];
|
|
|
|
if (!path) path = Qnil;
|
|
if (n == 0) {
|
|
const char *s = !NIL_P(path) ? RSTRING_PTR(path) : "";
|
|
if (!func_name) func_name = "(null)";
|
|
rb_bug("rb_sys_fail_path_in(%s, %s) - errno == 0",
|
|
func_name, s);
|
|
}
|
|
args[0] = path;
|
|
args[1] = rb_str_new_cstr(func_name);
|
|
rb_exc_raise(rb_class_new_instance(2, args, get_syserr(n)));
|
|
}
|
|
#endif
|
|
|
|
void
|
|
rb_mod_sys_fail(VALUE mod, const char *mesg)
|
|
{
|
|
VALUE exc = make_errno_exc(mesg);
|
|
rb_extend_object(exc, mod);
|
|
rb_exc_raise(exc);
|
|
}
|
|
|
|
void
|
|
rb_mod_sys_fail_str(VALUE mod, VALUE mesg)
|
|
{
|
|
VALUE exc = make_errno_exc_str(mesg);
|
|
rb_extend_object(exc, mod);
|
|
rb_exc_raise(exc);
|
|
}
|
|
|
|
void
|
|
rb_mod_syserr_fail(VALUE mod, int e, const char *mesg)
|
|
{
|
|
VALUE exc = rb_syserr_new(e, mesg);
|
|
rb_extend_object(exc, mod);
|
|
rb_exc_raise(exc);
|
|
}
|
|
|
|
void
|
|
rb_mod_syserr_fail_str(VALUE mod, int e, VALUE mesg)
|
|
{
|
|
VALUE exc = rb_syserr_new_str(e, mesg);
|
|
rb_extend_object(exc, mod);
|
|
rb_exc_raise(exc);
|
|
}
|
|
|
|
void
|
|
rb_sys_warning(const char *fmt, ...)
|
|
{
|
|
char buf[BUFSIZ];
|
|
va_list args;
|
|
int errno_save;
|
|
|
|
errno_save = errno;
|
|
|
|
if (!RTEST(ruby_verbose)) return;
|
|
|
|
snprintf(buf, BUFSIZ, "warning: %s", fmt);
|
|
snprintf(buf+strlen(buf), BUFSIZ-strlen(buf), ": %s", strerror(errno_save));
|
|
|
|
va_start(args, fmt);
|
|
warn_print(buf, args);
|
|
va_end(args);
|
|
errno = errno_save;
|
|
}
|
|
|
|
void
|
|
rb_load_fail(VALUE path, const char *err)
|
|
{
|
|
VALUE mesg = rb_str_buf_new_cstr(err);
|
|
rb_str_cat2(mesg, " -- ");
|
|
rb_str_append(mesg, path); /* should be ASCII compatible */
|
|
raise_loaderror(path, mesg);
|
|
}
|
|
|
|
void
|
|
rb_error_frozen(const char *what)
|
|
{
|
|
rb_raise(rb_eRuntimeError, "can't modify frozen %s", what);
|
|
}
|
|
|
|
void
|
|
rb_error_frozen_object(VALUE frozen_obj)
|
|
{
|
|
rb_raise(rb_eRuntimeError, "can't modify frozen %"PRIsVALUE,
|
|
CLASS_OF(frozen_obj));
|
|
}
|
|
|
|
#undef rb_check_frozen
|
|
void
|
|
rb_check_frozen(VALUE obj)
|
|
{
|
|
rb_check_frozen_internal(obj);
|
|
}
|
|
|
|
void
|
|
rb_error_untrusted(VALUE obj)
|
|
{
|
|
}
|
|
|
|
#undef rb_check_trusted
|
|
void
|
|
rb_check_trusted(VALUE obj)
|
|
{
|
|
}
|
|
|
|
void
|
|
rb_check_copyable(VALUE obj, VALUE orig)
|
|
{
|
|
if (!FL_ABLE(obj)) return;
|
|
rb_check_frozen_internal(obj);
|
|
if (!FL_ABLE(orig)) return;
|
|
if ((~RBASIC(obj)->flags & RBASIC(orig)->flags) & FL_TAINT) {
|
|
if (rb_safe_level() > 0) {
|
|
rb_raise(rb_eSecurityError, "Insecure: can't modify %"PRIsVALUE,
|
|
RBASIC(obj)->klass);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
Init_syserr(void)
|
|
{
|
|
rb_eNOERROR = set_syserr(0, "NOERROR");
|
|
#define defined_error(name, num) set_syserr((num), (name));
|
|
#define undefined_error(name) set_syserr(0, (name));
|
|
#include "known_errors.inc"
|
|
#undef defined_error
|
|
#undef undefined_error
|
|
}
|