зеркало из https://github.com/github/ruby.git
3459 строки
86 KiB
C
3459 строки
86 KiB
C
/**********************************************************************
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object.c -
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$Author$
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created at: Thu Jul 15 12:01:24 JST 1993
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Copyright (C) 1993-2007 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 "internal.h"
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#include "ruby/st.h"
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#include "ruby/util.h"
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#include <stdio.h>
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#include <errno.h>
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#include <ctype.h>
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#include <math.h>
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#include <float.h>
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#include "constant.h"
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#include "id.h"
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#include "probes.h"
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VALUE rb_cBasicObject;
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VALUE rb_mKernel;
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VALUE rb_cObject;
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VALUE rb_cModule;
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VALUE rb_cClass;
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VALUE rb_cData;
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VALUE rb_cNilClass;
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VALUE rb_cTrueClass;
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VALUE rb_cFalseClass;
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#define id_eq idEq
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#define id_eql idEqlP
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#define id_match idEqTilde
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#define id_inspect idInspect
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#define id_init_copy idInitialize_copy
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#define id_init_clone idInitialize_clone
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#define id_init_dup idInitialize_dup
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#define id_const_missing idConst_missing
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#define CLASS_OR_MODULE_P(obj) \
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(!SPECIAL_CONST_P(obj) && \
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(BUILTIN_TYPE(obj) == T_CLASS || BUILTIN_TYPE(obj) == T_MODULE))
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VALUE
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rb_obj_hide(VALUE obj)
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{
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if (!SPECIAL_CONST_P(obj)) {
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RBASIC_CLEAR_CLASS(obj);
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}
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return obj;
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}
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VALUE
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rb_obj_reveal(VALUE obj, VALUE klass)
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{
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if (!SPECIAL_CONST_P(obj)) {
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RBASIC_SET_CLASS(obj, klass);
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}
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return obj;
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}
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VALUE
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rb_obj_setup(VALUE obj, VALUE klass, VALUE type)
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{
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RBASIC(obj)->flags = type;
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RBASIC_SET_CLASS(obj, klass);
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return obj;
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}
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/*
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* call-seq:
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* obj === other -> true or false
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*
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* Case Equality -- For class Object, effectively the same as calling
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* <code>#==</code>, but typically overridden by descendants to provide
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* meaningful semantics in +case+ statements.
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*/
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VALUE
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rb_equal(VALUE obj1, VALUE obj2)
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{
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VALUE result;
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if (obj1 == obj2) return Qtrue;
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result = rb_funcall(obj1, id_eq, 1, obj2);
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if (RTEST(result)) return Qtrue;
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return Qfalse;
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}
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int
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rb_eql(VALUE obj1, VALUE obj2)
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{
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return RTEST(rb_funcall(obj1, id_eql, 1, obj2));
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}
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/*
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* call-seq:
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* obj == other -> true or false
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* obj.equal?(other) -> true or false
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* obj.eql?(other) -> true or false
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*
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* Equality --- At the <code>Object</code> level, <code>==</code> returns
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* <code>true</code> only if +obj+ and +other+ are the same object.
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* Typically, this method is overridden in descendant classes to provide
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* class-specific meaning.
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*
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* Unlike <code>==</code>, the <code>equal?</code> method should never be
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* overridden by subclasses as it is used to determine object identity
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* (that is, <code>a.equal?(b)</code> if and only if <code>a</code> is the
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* same object as <code>b</code>):
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*
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* obj = "a"
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* other = obj.dup
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*
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* obj == other #=> true
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* obj.equal? other #=> false
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* obj.equal? obj #=> true
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*
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* The <code>eql?</code> method returns <code>true</code> if +obj+ and
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* +other+ refer to the same hash key. This is used by Hash to test members
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* for equality. For objects of class <code>Object</code>, <code>eql?</code>
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* is synonymous with <code>==</code>. Subclasses normally continue this
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* tradition by aliasing <code>eql?</code> to their overridden <code>==</code>
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* method, but there are exceptions. <code>Numeric</code> types, for
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* example, perform type conversion across <code>==</code>, but not across
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* <code>eql?</code>, so:
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*
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* 1 == 1.0 #=> true
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* 1.eql? 1.0 #=> false
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*/
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VALUE
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rb_obj_equal(VALUE obj1, VALUE obj2)
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{
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if (obj1 == obj2) return Qtrue;
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return Qfalse;
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}
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/*
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* call-seq:
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* obj.hash -> fixnum
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*
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* Generates a Fixnum hash value for this object. This function must have the
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* property that <code>a.eql?(b)</code> implies <code>a.hash == b.hash</code>.
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*
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* The hash value is used along with #eql? by the Hash class to determine if
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* two objects reference the same hash key. Any hash value that exceeds the
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* capacity of a Fixnum will be truncated before being used.
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*
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* The hash value for an object may not be identical across invocations or
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* implementations of Ruby. If you need a stable identifier across Ruby
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* invocations and implementations you will need to generate one with a custom
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* method.
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*/
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VALUE
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rb_obj_hash(VALUE obj)
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{
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VALUE oid = rb_obj_id(obj);
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#if SIZEOF_LONG == SIZEOF_VOIDP
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st_index_t index = NUM2LONG(oid);
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#elif SIZEOF_LONG_LONG == SIZEOF_VOIDP
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st_index_t index = NUM2LL(oid);
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#else
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# error not supported
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#endif
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return LONG2FIX(rb_objid_hash(index));
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}
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/*
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* call-seq:
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* !obj -> true or false
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*
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* Boolean negate.
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*/
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VALUE
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rb_obj_not(VALUE obj)
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{
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return RTEST(obj) ? Qfalse : Qtrue;
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}
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/*
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* call-seq:
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* obj != other -> true or false
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*
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* Returns true if two objects are not-equal, otherwise false.
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*/
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VALUE
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rb_obj_not_equal(VALUE obj1, VALUE obj2)
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{
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VALUE result = rb_funcall(obj1, id_eq, 1, obj2);
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return RTEST(result) ? Qfalse : Qtrue;
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}
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VALUE
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rb_class_real(VALUE cl)
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{
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while (cl &&
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((RBASIC(cl)->flags & FL_SINGLETON) || BUILTIN_TYPE(cl) == T_ICLASS)) {
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cl = RCLASS_SUPER(cl);
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}
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return cl;
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}
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/*
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* call-seq:
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* obj.class -> class
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*
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* Returns the class of <i>obj</i>. This method must always be
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* called with an explicit receiver, as <code>class</code> is also a
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* reserved word in Ruby.
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*
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* 1.class #=> Fixnum
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* self.class #=> Object
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*/
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VALUE
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rb_obj_class(VALUE obj)
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{
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return rb_class_real(CLASS_OF(obj));
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}
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/*
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* call-seq:
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* obj.singleton_class -> class
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*
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* Returns the singleton class of <i>obj</i>. This method creates
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* a new singleton class if <i>obj</i> does not have one.
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*
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* If <i>obj</i> is <code>nil</code>, <code>true</code>, or
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* <code>false</code>, it returns NilClass, TrueClass, or FalseClass,
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* respectively.
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* If <i>obj</i> is a Fixnum or a Symbol, it raises a TypeError.
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*
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* Object.new.singleton_class #=> #<Class:#<Object:0xb7ce1e24>>
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* String.singleton_class #=> #<Class:String>
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* nil.singleton_class #=> NilClass
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*/
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static VALUE
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rb_obj_singleton_class(VALUE obj)
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{
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return rb_singleton_class(obj);
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}
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void
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rb_obj_copy_ivar(VALUE dest, VALUE obj)
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{
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if (!(RBASIC(dest)->flags & ROBJECT_EMBED) && ROBJECT_IVPTR(dest)) {
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xfree(ROBJECT_IVPTR(dest));
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ROBJECT(dest)->as.heap.ivptr = 0;
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ROBJECT(dest)->as.heap.numiv = 0;
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ROBJECT(dest)->as.heap.iv_index_tbl = 0;
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}
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if (RBASIC(obj)->flags & ROBJECT_EMBED) {
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MEMCPY(ROBJECT(dest)->as.ary, ROBJECT(obj)->as.ary, VALUE, ROBJECT_EMBED_LEN_MAX);
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RBASIC(dest)->flags |= ROBJECT_EMBED;
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}
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else {
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long len = ROBJECT(obj)->as.heap.numiv;
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VALUE *ptr = 0;
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if (len > 0) {
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ptr = ALLOC_N(VALUE, len);
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MEMCPY(ptr, ROBJECT(obj)->as.heap.ivptr, VALUE, len);
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}
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ROBJECT(dest)->as.heap.ivptr = ptr;
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ROBJECT(dest)->as.heap.numiv = len;
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ROBJECT(dest)->as.heap.iv_index_tbl = ROBJECT(obj)->as.heap.iv_index_tbl;
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RBASIC(dest)->flags &= ~ROBJECT_EMBED;
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}
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}
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static void
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init_copy(VALUE dest, VALUE obj)
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{
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if (OBJ_FROZEN(dest)) {
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rb_raise(rb_eTypeError, "[bug] frozen object (%s) allocated", rb_obj_classname(dest));
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}
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RBASIC(dest)->flags &= ~(T_MASK|FL_EXIVAR);
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RBASIC(dest)->flags |= RBASIC(obj)->flags & (T_MASK|FL_EXIVAR|FL_TAINT);
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rb_copy_wb_protected_attribute(dest, obj);
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rb_copy_generic_ivar(dest, obj);
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rb_gc_copy_finalizer(dest, obj);
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if (RB_TYPE_P(obj, T_OBJECT)) {
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rb_obj_copy_ivar(dest, obj);
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}
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}
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/*
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* call-seq:
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* obj.clone -> an_object
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*
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* Produces a shallow copy of <i>obj</i>---the instance variables of
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* <i>obj</i> are copied, but not the objects they reference.
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* <code>clone</code> copies the frozen and tainted state of <i>obj</i>.
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* See also the discussion under <code>Object#dup</code>.
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*
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* class Klass
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* attr_accessor :str
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* end
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* s1 = Klass.new #=> #<Klass:0x401b3a38>
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* s1.str = "Hello" #=> "Hello"
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* s2 = s1.clone #=> #<Klass:0x401b3998 @str="Hello">
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* s2.str[1,4] = "i" #=> "i"
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* s1.inspect #=> "#<Klass:0x401b3a38 @str=\"Hi\">"
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* s2.inspect #=> "#<Klass:0x401b3998 @str=\"Hi\">"
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*
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* This method may have class-specific behavior. If so, that
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* behavior will be documented under the #+initialize_copy+ method of
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* the class.
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*/
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VALUE
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rb_obj_clone(VALUE obj)
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{
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VALUE clone;
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VALUE singleton;
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if (rb_special_const_p(obj)) {
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rb_raise(rb_eTypeError, "can't clone %s", rb_obj_classname(obj));
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}
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clone = rb_obj_alloc(rb_obj_class(obj));
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RBASIC(clone)->flags &= (FL_TAINT|FL_PROMOTED0|FL_PROMOTED1);
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RBASIC(clone)->flags |= RBASIC(obj)->flags & ~(FL_PROMOTED0|FL_PROMOTED1|FL_FREEZE|FL_FINALIZE);
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singleton = rb_singleton_class_clone_and_attach(obj, clone);
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RBASIC_SET_CLASS(clone, singleton);
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if (FL_TEST(singleton, FL_SINGLETON)) {
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rb_singleton_class_attached(singleton, clone);
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}
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init_copy(clone, obj);
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rb_funcall(clone, id_init_clone, 1, obj);
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RBASIC(clone)->flags |= RBASIC(obj)->flags & FL_FREEZE;
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return clone;
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}
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/*
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* call-seq:
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* obj.dup -> an_object
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*
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* Produces a shallow copy of <i>obj</i>---the instance variables of
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* <i>obj</i> are copied, but not the objects they reference.
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* <code>dup</code> copies the tainted state of <i>obj</i>.
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*
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* This method may have class-specific behavior. If so, that
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* behavior will be documented under the #+initialize_copy+ method of
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* the class.
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*
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* === on dup vs clone
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*
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* In general, <code>clone</code> and <code>dup</code> may have different
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* semantics in descendant classes. While <code>clone</code> is used to
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* duplicate an object, including its internal state, <code>dup</code>
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* typically uses the class of the descendant object to create the new
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* instance.
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*
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* When using #dup, any modules that the object has been extended with will not
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* be copied.
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*
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* class Klass
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* attr_accessor :str
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* end
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*
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* module Foo
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* def foo; 'foo'; end
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* end
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*
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* s1 = Klass.new #=> #<Klass:0x401b3a38>
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* s1.extend(Foo) #=> #<Klass:0x401b3a38>
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* s1.foo #=> "foo"
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*
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* s2 = s1.clone #=> #<Klass:0x401b3a38>
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* s2.foo #=> "foo"
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*
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* s3 = s1.dup #=> #<Klass:0x401b3a38>
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* s3.foo #=> NoMethodError: undefined method `foo' for #<Klass:0x401b3a38>
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*
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*/
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VALUE
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rb_obj_dup(VALUE obj)
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{
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VALUE dup;
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if (rb_special_const_p(obj)) {
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rb_raise(rb_eTypeError, "can't dup %s", rb_obj_classname(obj));
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}
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dup = rb_obj_alloc(rb_obj_class(obj));
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init_copy(dup, obj);
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rb_funcall(dup, id_init_dup, 1, obj);
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return dup;
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}
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/*
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* call-seq:
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* obj.itself -> an_object
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*
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* Returns <i>obj</i>.
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*
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* string = 'my string' #=> "my string"
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* string.itself.object_id == string.object_id #=> true
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*
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*/
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static VALUE
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rb_obj_itself(VALUE obj)
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{
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return obj;
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}
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/* :nodoc: */
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VALUE
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rb_obj_init_copy(VALUE obj, VALUE orig)
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{
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if (obj == orig) return obj;
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rb_check_frozen(obj);
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rb_check_trusted(obj);
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if (TYPE(obj) != TYPE(orig) || rb_obj_class(obj) != rb_obj_class(orig)) {
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rb_raise(rb_eTypeError, "initialize_copy should take same class object");
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}
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return obj;
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}
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/* :nodoc: */
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VALUE
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rb_obj_init_dup_clone(VALUE obj, VALUE orig)
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{
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rb_funcall(obj, id_init_copy, 1, orig);
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return obj;
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}
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/*
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* call-seq:
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* obj.to_s -> string
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*
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* Returns a string representing <i>obj</i>. The default
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* <code>to_s</code> prints the object's class and an encoding of the
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* object id. As a special case, the top-level object that is the
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* initial execution context of Ruby programs returns ``main''.
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*/
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VALUE
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rb_any_to_s(VALUE obj)
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{
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VALUE str;
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VALUE cname = rb_class_name(CLASS_OF(obj));
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str = rb_sprintf("#<%"PRIsVALUE":%p>", cname, (void*)obj);
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OBJ_INFECT(str, obj);
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return str;
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}
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/*
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* If the default external encoding is ASCII compatible, the encoding of
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* the inspected result must be compatible with it.
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* If the default external encoding is ASCII incompatible,
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* the result must be ASCII only.
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*/
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VALUE
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rb_inspect(VALUE obj)
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{
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VALUE str = rb_obj_as_string(rb_funcallv(obj, id_inspect, 0, 0));
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rb_encoding *ext = rb_default_external_encoding();
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if (!rb_enc_asciicompat(ext)) {
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if (!rb_enc_str_asciionly_p(str))
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rb_raise(rb_eEncCompatError, "inspected result must be ASCII only if default external encoding is ASCII incompatible");
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return str;
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}
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if (rb_enc_get(str) != ext && !rb_enc_str_asciionly_p(str))
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rb_raise(rb_eEncCompatError, "inspected result must be ASCII only or use the default external encoding");
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return str;
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}
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static int
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inspect_i(st_data_t k, st_data_t v, st_data_t a)
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{
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ID id = (ID)k;
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VALUE value = (VALUE)v;
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VALUE str = (VALUE)a;
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/* need not to show internal data */
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if (CLASS_OF(value) == 0) return ST_CONTINUE;
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if (!rb_is_instance_id(id)) return ST_CONTINUE;
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if (RSTRING_PTR(str)[0] == '-') { /* first element */
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RSTRING_PTR(str)[0] = '#';
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rb_str_cat2(str, " ");
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}
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else {
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rb_str_cat2(str, ", ");
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}
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rb_str_catf(str, "%"PRIsVALUE"=%+"PRIsVALUE,
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rb_id2str(id), value);
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return ST_CONTINUE;
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}
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static VALUE
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inspect_obj(VALUE obj, VALUE str, int recur)
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{
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if (recur) {
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rb_str_cat2(str, " ...");
|
|
}
|
|
else {
|
|
rb_ivar_foreach(obj, inspect_i, str);
|
|
}
|
|
rb_str_cat2(str, ">");
|
|
RSTRING_PTR(str)[0] = '#';
|
|
OBJ_INFECT(str, obj);
|
|
|
|
return str;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* obj.inspect -> string
|
|
*
|
|
* Returns a string containing a human-readable representation of <i>obj</i>.
|
|
* The default <code>inspect</code> shows the object's class name,
|
|
* an encoding of the object id, and a list of the instance variables and
|
|
* their values (by calling #inspect on each of them).
|
|
* User defined classes should override this method to provide a better
|
|
* representation of <i>obj</i>. When overriding this method, it should
|
|
* return a string whose encoding is compatible with the default external
|
|
* encoding.
|
|
*
|
|
* [ 1, 2, 3..4, 'five' ].inspect #=> "[1, 2, 3..4, \"five\"]"
|
|
* Time.new.inspect #=> "2008-03-08 19:43:39 +0900"
|
|
*
|
|
* class Foo
|
|
* end
|
|
* Foo.new.inspect #=> "#<Foo:0x0300c868>"
|
|
*
|
|
* class Bar
|
|
* def initialize
|
|
* @bar = 1
|
|
* end
|
|
* end
|
|
* Bar.new.inspect #=> "#<Bar:0x0300c868 @bar=1>"
|
|
*/
|
|
|
|
static VALUE
|
|
rb_obj_inspect(VALUE obj)
|
|
{
|
|
if (rb_ivar_count(obj) > 0) {
|
|
VALUE str;
|
|
VALUE c = rb_class_name(CLASS_OF(obj));
|
|
|
|
str = rb_sprintf("-<%"PRIsVALUE":%p", c, (void*)obj);
|
|
return rb_exec_recursive(inspect_obj, obj, str);
|
|
}
|
|
else {
|
|
return rb_any_to_s(obj);
|
|
}
|
|
}
|
|
|
|
static VALUE
|
|
class_or_module_required(VALUE c)
|
|
{
|
|
if (SPECIAL_CONST_P(c)) goto not_class;
|
|
switch (BUILTIN_TYPE(c)) {
|
|
case T_MODULE:
|
|
case T_CLASS:
|
|
case T_ICLASS:
|
|
break;
|
|
|
|
default:
|
|
not_class:
|
|
rb_raise(rb_eTypeError, "class or module required");
|
|
}
|
|
return c;
|
|
}
|
|
|
|
static VALUE class_search_ancestor(VALUE cl, VALUE c);
|
|
|
|
/*
|
|
* call-seq:
|
|
* obj.instance_of?(class) -> true or false
|
|
*
|
|
* Returns <code>true</code> if <i>obj</i> is an instance of the given
|
|
* class. See also <code>Object#kind_of?</code>.
|
|
*
|
|
* class A; end
|
|
* class B < A; end
|
|
* class C < B; end
|
|
*
|
|
* b = B.new
|
|
* b.instance_of? A #=> false
|
|
* b.instance_of? B #=> true
|
|
* b.instance_of? C #=> false
|
|
*/
|
|
|
|
VALUE
|
|
rb_obj_is_instance_of(VALUE obj, VALUE c)
|
|
{
|
|
c = class_or_module_required(c);
|
|
if (rb_obj_class(obj) == c) return Qtrue;
|
|
return Qfalse;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* obj.is_a?(class) -> true or false
|
|
* obj.kind_of?(class) -> true or false
|
|
*
|
|
* Returns <code>true</code> if <i>class</i> is the class of
|
|
* <i>obj</i>, or if <i>class</i> is one of the superclasses of
|
|
* <i>obj</i> or modules included in <i>obj</i>.
|
|
*
|
|
* module M; end
|
|
* class A
|
|
* include M
|
|
* end
|
|
* class B < A; end
|
|
* class C < B; end
|
|
*
|
|
* b = B.new
|
|
* b.is_a? A #=> true
|
|
* b.is_a? B #=> true
|
|
* b.is_a? C #=> false
|
|
* b.is_a? M #=> true
|
|
*
|
|
* b.kind_of? A #=> true
|
|
* b.kind_of? B #=> true
|
|
* b.kind_of? C #=> false
|
|
* b.kind_of? M #=> true
|
|
*/
|
|
|
|
VALUE
|
|
rb_obj_is_kind_of(VALUE obj, VALUE c)
|
|
{
|
|
VALUE cl = CLASS_OF(obj);
|
|
|
|
c = class_or_module_required(c);
|
|
return class_search_ancestor(cl, RCLASS_ORIGIN(c)) ? Qtrue : Qfalse;
|
|
}
|
|
|
|
static VALUE
|
|
class_search_ancestor(VALUE cl, VALUE c)
|
|
{
|
|
while (cl) {
|
|
if (cl == c || RCLASS_M_TBL(cl) == RCLASS_M_TBL(c))
|
|
return cl;
|
|
cl = RCLASS_SUPER(cl);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
VALUE
|
|
rb_class_search_ancestor(VALUE cl, VALUE c)
|
|
{
|
|
cl = class_or_module_required(cl);
|
|
c = class_or_module_required(c);
|
|
return class_search_ancestor(cl, RCLASS_ORIGIN(c));
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* obj.tap{|x|...} -> obj
|
|
*
|
|
* Yields self to the block, and then returns self.
|
|
* The primary purpose of this method is to "tap into" a method chain,
|
|
* in order to perform operations on intermediate results within the chain.
|
|
*
|
|
* (1..10) .tap {|x| puts "original: #{x.inspect}"}
|
|
* .to_a .tap {|x| puts "array: #{x.inspect}"}
|
|
* .select {|x| x%2==0} .tap {|x| puts "evens: #{x.inspect}"}
|
|
* .map {|x| x*x} .tap {|x| puts "squares: #{x.inspect}"}
|
|
*
|
|
*/
|
|
|
|
VALUE
|
|
rb_obj_tap(VALUE obj)
|
|
{
|
|
rb_yield(obj);
|
|
return obj;
|
|
}
|
|
|
|
|
|
/*
|
|
* Document-method: inherited
|
|
*
|
|
* call-seq:
|
|
* inherited(subclass)
|
|
*
|
|
* Callback invoked whenever a subclass of the current class is created.
|
|
*
|
|
* Example:
|
|
*
|
|
* class Foo
|
|
* def self.inherited(subclass)
|
|
* puts "New subclass: #{subclass}"
|
|
* end
|
|
* end
|
|
*
|
|
* class Bar < Foo
|
|
* end
|
|
*
|
|
* class Baz < Bar
|
|
* end
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* New subclass: Bar
|
|
* New subclass: Baz
|
|
*/
|
|
|
|
/* Document-method: method_added
|
|
*
|
|
* call-seq:
|
|
* method_added(method_name)
|
|
*
|
|
* Invoked as a callback whenever an instance method is added to the
|
|
* receiver.
|
|
*
|
|
* module Chatty
|
|
* def self.method_added(method_name)
|
|
* puts "Adding #{method_name.inspect}"
|
|
* end
|
|
* def self.some_class_method() end
|
|
* def some_instance_method() end
|
|
* end
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* Adding :some_instance_method
|
|
*
|
|
*/
|
|
|
|
/* Document-method: method_removed
|
|
*
|
|
* call-seq:
|
|
* method_removed(method_name)
|
|
*
|
|
* Invoked as a callback whenever an instance method is removed from the
|
|
* receiver.
|
|
*
|
|
* module Chatty
|
|
* def self.method_removed(method_name)
|
|
* puts "Removing #{method_name.inspect}"
|
|
* end
|
|
* def self.some_class_method() end
|
|
* def some_instance_method() end
|
|
* class << self
|
|
* remove_method :some_class_method
|
|
* end
|
|
* remove_method :some_instance_method
|
|
* end
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* Removing :some_instance_method
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* Document-method: singleton_method_added
|
|
*
|
|
* call-seq:
|
|
* singleton_method_added(symbol)
|
|
*
|
|
* Invoked as a callback whenever a singleton method is added to the
|
|
* receiver.
|
|
*
|
|
* module Chatty
|
|
* def Chatty.singleton_method_added(id)
|
|
* puts "Adding #{id.id2name}"
|
|
* end
|
|
* def self.one() end
|
|
* def two() end
|
|
* def Chatty.three() end
|
|
* end
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* Adding singleton_method_added
|
|
* Adding one
|
|
* Adding three
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* Document-method: singleton_method_removed
|
|
*
|
|
* call-seq:
|
|
* singleton_method_removed(symbol)
|
|
*
|
|
* Invoked as a callback whenever a singleton method is removed from
|
|
* the receiver.
|
|
*
|
|
* module Chatty
|
|
* def Chatty.singleton_method_removed(id)
|
|
* puts "Removing #{id.id2name}"
|
|
* end
|
|
* def self.one() end
|
|
* def two() end
|
|
* def Chatty.three() end
|
|
* class << self
|
|
* remove_method :three
|
|
* remove_method :one
|
|
* end
|
|
* end
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* Removing three
|
|
* Removing one
|
|
*/
|
|
|
|
/*
|
|
* Document-method: singleton_method_undefined
|
|
*
|
|
* call-seq:
|
|
* singleton_method_undefined(symbol)
|
|
*
|
|
* Invoked as a callback whenever a singleton method is undefined in
|
|
* the receiver.
|
|
*
|
|
* module Chatty
|
|
* def Chatty.singleton_method_undefined(id)
|
|
* puts "Undefining #{id.id2name}"
|
|
* end
|
|
* def Chatty.one() end
|
|
* class << self
|
|
* undef_method(:one)
|
|
* end
|
|
* end
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* Undefining one
|
|
*/
|
|
|
|
/*
|
|
* Document-method: extended
|
|
*
|
|
* call-seq:
|
|
* extended(othermod)
|
|
*
|
|
* The equivalent of <tt>included</tt>, but for extended modules.
|
|
*
|
|
* module A
|
|
* def self.extended(mod)
|
|
* puts "#{self} extended in #{mod}"
|
|
* end
|
|
* end
|
|
* module Enumerable
|
|
* extend A
|
|
* end
|
|
* # => prints "A extended in Enumerable"
|
|
*/
|
|
|
|
/*
|
|
* Document-method: included
|
|
*
|
|
* call-seq:
|
|
* included(othermod)
|
|
*
|
|
* Callback invoked whenever the receiver is included in another
|
|
* module or class. This should be used in preference to
|
|
* <tt>Module.append_features</tt> if your code wants to perform some
|
|
* action when a module is included in another.
|
|
*
|
|
* module A
|
|
* def A.included(mod)
|
|
* puts "#{self} included in #{mod}"
|
|
* end
|
|
* end
|
|
* module Enumerable
|
|
* include A
|
|
* end
|
|
* # => prints "A included in Enumerable"
|
|
*/
|
|
|
|
/*
|
|
* Document-method: prepended
|
|
*
|
|
* call-seq:
|
|
* prepended(othermod)
|
|
*
|
|
* The equivalent of <tt>included</tt>, but for prepended modules.
|
|
*
|
|
* module A
|
|
* def self.prepended(mod)
|
|
* puts "#{self} prepended to #{mod}"
|
|
* end
|
|
* end
|
|
* module Enumerable
|
|
* prepend A
|
|
* end
|
|
* # => prints "A prepended to Enumerable"
|
|
*/
|
|
|
|
/*
|
|
* Document-method: initialize
|
|
*
|
|
* call-seq:
|
|
* BasicObject.new
|
|
*
|
|
* Returns a new BasicObject.
|
|
*/
|
|
|
|
/*
|
|
* Not documented
|
|
*/
|
|
|
|
static VALUE
|
|
rb_obj_dummy(void)
|
|
{
|
|
return Qnil;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* obj.tainted? -> true or false
|
|
*
|
|
* Returns true if the object is tainted.
|
|
*
|
|
* See #taint for more information.
|
|
*/
|
|
|
|
VALUE
|
|
rb_obj_tainted(VALUE obj)
|
|
{
|
|
if (OBJ_TAINTED(obj))
|
|
return Qtrue;
|
|
return Qfalse;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* obj.taint -> obj
|
|
*
|
|
* Mark the object as tainted.
|
|
*
|
|
* Objects that are marked as tainted will be restricted from various built-in
|
|
* methods. This is to prevent insecure data, such as command-line arguments
|
|
* or strings read from Kernel#gets, from inadvertently compromising the user's
|
|
* system.
|
|
*
|
|
* To check whether an object is tainted, use #tainted?.
|
|
*
|
|
* You should only untaint a tainted object if your code has inspected it and
|
|
* determined that it is safe. To do so use #untaint.
|
|
*/
|
|
|
|
VALUE
|
|
rb_obj_taint(VALUE obj)
|
|
{
|
|
if (!OBJ_TAINTED(obj) && OBJ_TAINTABLE(obj)) {
|
|
rb_check_frozen(obj);
|
|
OBJ_TAINT(obj);
|
|
}
|
|
return obj;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* obj.untaint -> obj
|
|
*
|
|
* Removes the tainted mark from the object.
|
|
*
|
|
* See #taint for more information.
|
|
*/
|
|
|
|
VALUE
|
|
rb_obj_untaint(VALUE obj)
|
|
{
|
|
if (OBJ_TAINTED(obj)) {
|
|
rb_check_frozen(obj);
|
|
FL_UNSET(obj, FL_TAINT);
|
|
}
|
|
return obj;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* obj.untrusted? -> true or false
|
|
*
|
|
* Deprecated method that is equivalent to #tainted?.
|
|
*/
|
|
|
|
VALUE
|
|
rb_obj_untrusted(VALUE obj)
|
|
{
|
|
rb_warning("untrusted? is deprecated and its behavior is same as tainted?");
|
|
return rb_obj_tainted(obj);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* obj.untrust -> obj
|
|
*
|
|
* Deprecated method that is equivalent to #taint.
|
|
*/
|
|
|
|
VALUE
|
|
rb_obj_untrust(VALUE obj)
|
|
{
|
|
rb_warning("untrust is deprecated and its behavior is same as taint");
|
|
return rb_obj_taint(obj);
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* obj.trust -> obj
|
|
*
|
|
* Deprecated method that is equivalent to #untaint.
|
|
*/
|
|
|
|
VALUE
|
|
rb_obj_trust(VALUE obj)
|
|
{
|
|
rb_warning("trust is deprecated and its behavior is same as untaint");
|
|
return rb_obj_untaint(obj);
|
|
}
|
|
|
|
void
|
|
rb_obj_infect(VALUE obj1, VALUE obj2)
|
|
{
|
|
OBJ_INFECT(obj1, obj2);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* obj.freeze -> obj
|
|
*
|
|
* Prevents further modifications to <i>obj</i>. A
|
|
* <code>RuntimeError</code> will be raised if modification is attempted.
|
|
* There is no way to unfreeze a frozen object. See also
|
|
* <code>Object#frozen?</code>.
|
|
*
|
|
* This method returns self.
|
|
*
|
|
* a = [ "a", "b", "c" ]
|
|
* a.freeze
|
|
* a << "z"
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* prog.rb:3:in `<<': can't modify frozen Array (RuntimeError)
|
|
* from prog.rb:3
|
|
*
|
|
* Objects of the following classes are always frozen: Fixnum,
|
|
* Bignum, Float, Symbol.
|
|
*/
|
|
|
|
VALUE
|
|
rb_obj_freeze(VALUE obj)
|
|
{
|
|
if (!OBJ_FROZEN(obj)) {
|
|
OBJ_FREEZE(obj);
|
|
if (SPECIAL_CONST_P(obj)) {
|
|
rb_bug("special consts should be frozen.");
|
|
}
|
|
}
|
|
return obj;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* obj.frozen? -> true or false
|
|
*
|
|
* Returns the freeze status of <i>obj</i>.
|
|
*
|
|
* a = [ "a", "b", "c" ]
|
|
* a.freeze #=> ["a", "b", "c"]
|
|
* a.frozen? #=> true
|
|
*/
|
|
|
|
VALUE
|
|
rb_obj_frozen_p(VALUE obj)
|
|
{
|
|
return OBJ_FROZEN(obj) ? Qtrue : Qfalse;
|
|
}
|
|
|
|
|
|
/*
|
|
* Document-class: NilClass
|
|
*
|
|
* The class of the singleton object <code>nil</code>.
|
|
*/
|
|
|
|
/*
|
|
* call-seq:
|
|
* nil.to_i -> 0
|
|
*
|
|
* Always returns zero.
|
|
*
|
|
* nil.to_i #=> 0
|
|
*/
|
|
|
|
|
|
static VALUE
|
|
nil_to_i(VALUE obj)
|
|
{
|
|
return INT2FIX(0);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* nil.to_f -> 0.0
|
|
*
|
|
* Always returns zero.
|
|
*
|
|
* nil.to_f #=> 0.0
|
|
*/
|
|
|
|
static VALUE
|
|
nil_to_f(VALUE obj)
|
|
{
|
|
return DBL2NUM(0.0);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* nil.to_s -> ""
|
|
*
|
|
* Always returns the empty string.
|
|
*/
|
|
|
|
static VALUE
|
|
nil_to_s(VALUE obj)
|
|
{
|
|
return rb_usascii_str_new(0, 0);
|
|
}
|
|
|
|
/*
|
|
* Document-method: to_a
|
|
*
|
|
* call-seq:
|
|
* nil.to_a -> []
|
|
*
|
|
* Always returns an empty array.
|
|
*
|
|
* nil.to_a #=> []
|
|
*/
|
|
|
|
static VALUE
|
|
nil_to_a(VALUE obj)
|
|
{
|
|
return rb_ary_new2(0);
|
|
}
|
|
|
|
/*
|
|
* Document-method: to_h
|
|
*
|
|
* call-seq:
|
|
* nil.to_h -> {}
|
|
*
|
|
* Always returns an empty hash.
|
|
*
|
|
* nil.to_h #=> {}
|
|
*/
|
|
|
|
static VALUE
|
|
nil_to_h(VALUE obj)
|
|
{
|
|
return rb_hash_new();
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* nil.inspect -> "nil"
|
|
*
|
|
* Always returns the string "nil".
|
|
*/
|
|
|
|
static VALUE
|
|
nil_inspect(VALUE obj)
|
|
{
|
|
return rb_usascii_str_new2("nil");
|
|
}
|
|
|
|
/***********************************************************************
|
|
* Document-class: TrueClass
|
|
*
|
|
* The global value <code>true</code> is the only instance of class
|
|
* <code>TrueClass</code> and represents a logically true value in
|
|
* boolean expressions. The class provides operators allowing
|
|
* <code>true</code> to be used in logical expressions.
|
|
*/
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* true.to_s -> "true"
|
|
*
|
|
* The string representation of <code>true</code> is "true".
|
|
*/
|
|
|
|
static VALUE
|
|
true_to_s(VALUE obj)
|
|
{
|
|
return rb_usascii_str_new2("true");
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* true & obj -> true or false
|
|
*
|
|
* And---Returns <code>false</code> if <i>obj</i> is
|
|
* <code>nil</code> or <code>false</code>, <code>true</code> otherwise.
|
|
*/
|
|
|
|
static VALUE
|
|
true_and(VALUE obj, VALUE obj2)
|
|
{
|
|
return RTEST(obj2)?Qtrue:Qfalse;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* true | obj -> true
|
|
*
|
|
* Or---Returns <code>true</code>. As <i>obj</i> is an argument to
|
|
* a method call, it is always evaluated; there is no short-circuit
|
|
* evaluation in this case.
|
|
*
|
|
* true | puts("or")
|
|
* true || puts("logical or")
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* or
|
|
*/
|
|
|
|
static VALUE
|
|
true_or(VALUE obj, VALUE obj2)
|
|
{
|
|
return Qtrue;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* true ^ obj -> !obj
|
|
*
|
|
* Exclusive Or---Returns <code>true</code> if <i>obj</i> is
|
|
* <code>nil</code> or <code>false</code>, <code>false</code>
|
|
* otherwise.
|
|
*/
|
|
|
|
static VALUE
|
|
true_xor(VALUE obj, VALUE obj2)
|
|
{
|
|
return RTEST(obj2)?Qfalse:Qtrue;
|
|
}
|
|
|
|
|
|
/*
|
|
* Document-class: FalseClass
|
|
*
|
|
* The global value <code>false</code> is the only instance of class
|
|
* <code>FalseClass</code> and represents a logically false value in
|
|
* boolean expressions. The class provides operators allowing
|
|
* <code>false</code> to participate correctly in logical expressions.
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* call-seq:
|
|
* false.to_s -> "false"
|
|
*
|
|
* 'nuf said...
|
|
*/
|
|
|
|
static VALUE
|
|
false_to_s(VALUE obj)
|
|
{
|
|
return rb_usascii_str_new2("false");
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* false & obj -> false
|
|
* nil & obj -> false
|
|
*
|
|
* And---Returns <code>false</code>. <i>obj</i> is always
|
|
* evaluated as it is the argument to a method call---there is no
|
|
* short-circuit evaluation in this case.
|
|
*/
|
|
|
|
static VALUE
|
|
false_and(VALUE obj, VALUE obj2)
|
|
{
|
|
return Qfalse;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* false | obj -> true or false
|
|
* nil | obj -> true or false
|
|
*
|
|
* Or---Returns <code>false</code> if <i>obj</i> is
|
|
* <code>nil</code> or <code>false</code>; <code>true</code> otherwise.
|
|
*/
|
|
|
|
static VALUE
|
|
false_or(VALUE obj, VALUE obj2)
|
|
{
|
|
return RTEST(obj2)?Qtrue:Qfalse;
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* false ^ obj -> true or false
|
|
* nil ^ obj -> true or false
|
|
*
|
|
* Exclusive Or---If <i>obj</i> is <code>nil</code> or
|
|
* <code>false</code>, returns <code>false</code>; otherwise, returns
|
|
* <code>true</code>.
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
false_xor(VALUE obj, VALUE obj2)
|
|
{
|
|
return RTEST(obj2)?Qtrue:Qfalse;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* nil.nil? -> true
|
|
*
|
|
* Only the object <i>nil</i> responds <code>true</code> to <code>nil?</code>.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_true(VALUE obj)
|
|
{
|
|
return Qtrue;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* obj.nil? -> true or false
|
|
*
|
|
* Only the object <i>nil</i> responds <code>true</code> to <code>nil?</code>.
|
|
*
|
|
* Object.new.nil? #=> false
|
|
* nil.nil? #=> true
|
|
*/
|
|
|
|
|
|
static VALUE
|
|
rb_false(VALUE obj)
|
|
{
|
|
return Qfalse;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* obj =~ other -> nil
|
|
*
|
|
* Pattern Match---Overridden by descendants (notably
|
|
* <code>Regexp</code> and <code>String</code>) to provide meaningful
|
|
* pattern-match semantics.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_obj_match(VALUE obj1, VALUE obj2)
|
|
{
|
|
return Qnil;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* obj !~ other -> true or false
|
|
*
|
|
* Returns true if two objects do not match (using the <i>=~</i>
|
|
* method), otherwise false.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_obj_not_match(VALUE obj1, VALUE obj2)
|
|
{
|
|
VALUE result = rb_funcall(obj1, id_match, 1, obj2);
|
|
return RTEST(result) ? Qfalse : Qtrue;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* obj <=> other -> 0 or nil
|
|
*
|
|
* Returns 0 if +obj+ and +other+ are the same object
|
|
* or <code>obj == other</code>, otherwise nil.
|
|
*
|
|
* The <code><=></code> is used by various methods to compare objects, for example
|
|
* Enumerable#sort, Enumerable#max etc.
|
|
*
|
|
* Your implementation of <code><=></code> should return one of the following values: -1, 0,
|
|
* 1 or nil. -1 means self is smaller than other. 0 means self is equal to other.
|
|
* 1 means self is bigger than other. Nil means the two values could not be
|
|
* compared.
|
|
*
|
|
* When you define <code><=></code>, you can include Comparable to gain the methods
|
|
* <code><=</code>, <code><</code>, <code>==</code>, <code>>=</code>, <code>></code> and <code>between?</code>.
|
|
*/
|
|
static VALUE
|
|
rb_obj_cmp(VALUE obj1, VALUE obj2)
|
|
{
|
|
if (obj1 == obj2 || rb_equal(obj1, obj2))
|
|
return INT2FIX(0);
|
|
return Qnil;
|
|
}
|
|
|
|
/***********************************************************************
|
|
*
|
|
* Document-class: Module
|
|
*
|
|
* A <code>Module</code> is a collection of methods and constants. The
|
|
* methods in a module may be instance methods or module methods.
|
|
* Instance methods appear as methods in a class when the module is
|
|
* included, module methods do not. Conversely, module methods may be
|
|
* called without creating an encapsulating object, while instance
|
|
* methods may not. (See <code>Module#module_function</code>.)
|
|
*
|
|
* In the descriptions that follow, the parameter <i>sym</i> refers
|
|
* to a symbol, which is either a quoted string or a
|
|
* <code>Symbol</code> (such as <code>:name</code>).
|
|
*
|
|
* module Mod
|
|
* include Math
|
|
* CONST = 1
|
|
* def meth
|
|
* # ...
|
|
* end
|
|
* end
|
|
* Mod.class #=> Module
|
|
* Mod.constants #=> [:CONST, :PI, :E]
|
|
* Mod.instance_methods #=> [:meth]
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* call-seq:
|
|
* mod.to_s -> string
|
|
*
|
|
* Returns a string representing this module or class. For basic
|
|
* classes and modules, this is the name. For singletons, we
|
|
* show information on the thing we're attached to as well.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_to_s(VALUE klass)
|
|
{
|
|
ID id_defined_at;
|
|
VALUE refined_class, defined_at;
|
|
|
|
if (FL_TEST(klass, FL_SINGLETON)) {
|
|
VALUE s = rb_usascii_str_new2("#<Class:");
|
|
VALUE v = rb_ivar_get(klass, id__attached__);
|
|
|
|
if (CLASS_OR_MODULE_P(v)) {
|
|
rb_str_append(s, rb_inspect(v));
|
|
}
|
|
else {
|
|
rb_str_append(s, rb_any_to_s(v));
|
|
}
|
|
rb_str_cat2(s, ">");
|
|
|
|
return s;
|
|
}
|
|
refined_class = rb_refinement_module_get_refined_class(klass);
|
|
if (!NIL_P(refined_class)) {
|
|
VALUE s = rb_usascii_str_new2("#<refinement:");
|
|
|
|
rb_str_concat(s, rb_inspect(refined_class));
|
|
rb_str_cat2(s, "@");
|
|
CONST_ID(id_defined_at, "__defined_at__");
|
|
defined_at = rb_attr_get(klass, id_defined_at);
|
|
rb_str_concat(s, rb_inspect(defined_at));
|
|
rb_str_cat2(s, ">");
|
|
return s;
|
|
}
|
|
return rb_str_dup(rb_class_name(klass));
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* mod.freeze -> mod
|
|
*
|
|
* Prevents further modifications to <i>mod</i>.
|
|
*
|
|
* This method returns self.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_freeze(VALUE mod)
|
|
{
|
|
rb_class_name(mod);
|
|
return rb_obj_freeze(mod);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* mod === obj -> true or false
|
|
*
|
|
* Case Equality---Returns <code>true</code> if <i>obj</i> is an
|
|
* instance of <i>mod</i> or one of <i>mod</i>'s descendants. Of
|
|
* limited use for modules, but can be used in <code>case</code>
|
|
* statements to classify objects by class.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_eqq(VALUE mod, VALUE arg)
|
|
{
|
|
return rb_obj_is_kind_of(arg, mod);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* mod <= other -> true, false, or nil
|
|
*
|
|
* Returns true if <i>mod</i> is a subclass of <i>other</i> or
|
|
* is the same as <i>other</i>. Returns
|
|
* <code>nil</code> if there's no relationship between the two.
|
|
* (Think of the relationship in terms of the class definition:
|
|
* "class A<B" implies "A<B".)
|
|
*
|
|
*/
|
|
|
|
VALUE
|
|
rb_class_inherited_p(VALUE mod, VALUE arg)
|
|
{
|
|
VALUE start = mod;
|
|
|
|
if (mod == arg) return Qtrue;
|
|
if (!CLASS_OR_MODULE_P(arg) && !RB_TYPE_P(arg, T_ICLASS)) {
|
|
rb_raise(rb_eTypeError, "compared with non class/module");
|
|
}
|
|
arg = RCLASS_ORIGIN(arg);
|
|
if (class_search_ancestor(mod, arg)) {
|
|
return Qtrue;
|
|
}
|
|
/* not mod < arg; check if mod > arg */
|
|
if (class_search_ancestor(arg, start)) {
|
|
return Qfalse;
|
|
}
|
|
return Qnil;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* mod < other -> true, false, or nil
|
|
*
|
|
* Returns true if <i>mod</i> is a subclass of <i>other</i>. Returns
|
|
* <code>nil</code> if there's no relationship between the two.
|
|
* (Think of the relationship in terms of the class definition:
|
|
* "class A<B" implies "A<B".)
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_lt(VALUE mod, VALUE arg)
|
|
{
|
|
if (mod == arg) return Qfalse;
|
|
return rb_class_inherited_p(mod, arg);
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* mod >= other -> true, false, or nil
|
|
*
|
|
* Returns true if <i>mod</i> is an ancestor of <i>other</i>, or the
|
|
* two modules are the same. Returns
|
|
* <code>nil</code> if there's no relationship between the two.
|
|
* (Think of the relationship in terms of the class definition:
|
|
* "class A<B" implies "B>A".)
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_ge(VALUE mod, VALUE arg)
|
|
{
|
|
if (!CLASS_OR_MODULE_P(arg)) {
|
|
rb_raise(rb_eTypeError, "compared with non class/module");
|
|
}
|
|
|
|
return rb_class_inherited_p(arg, mod);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* mod > other -> true, false, or nil
|
|
*
|
|
* Returns true if <i>mod</i> is an ancestor of <i>other</i>. Returns
|
|
* <code>nil</code> if there's no relationship between the two.
|
|
* (Think of the relationship in terms of the class definition:
|
|
* "class A<B" implies "B>A".)
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_gt(VALUE mod, VALUE arg)
|
|
{
|
|
if (mod == arg) return Qfalse;
|
|
return rb_mod_ge(mod, arg);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* module <=> other_module -> -1, 0, +1, or nil
|
|
*
|
|
* Comparison---Returns -1, 0, +1 or nil depending on whether +module+
|
|
* includes +other_module+, they are the same, or if +module+ is included by
|
|
* +other_module+. This is the basis for the tests in Comparable.
|
|
*
|
|
* Returns +nil+ if +module+ has no relationship with +other_module+, if
|
|
* +other_module+ is not a module, or if the two values are incomparable.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_cmp(VALUE mod, VALUE arg)
|
|
{
|
|
VALUE cmp;
|
|
|
|
if (mod == arg) return INT2FIX(0);
|
|
if (!CLASS_OR_MODULE_P(arg)) {
|
|
return Qnil;
|
|
}
|
|
|
|
cmp = rb_class_inherited_p(mod, arg);
|
|
if (NIL_P(cmp)) return Qnil;
|
|
if (cmp) {
|
|
return INT2FIX(-1);
|
|
}
|
|
return INT2FIX(1);
|
|
}
|
|
|
|
static VALUE
|
|
rb_module_s_alloc(VALUE klass)
|
|
{
|
|
VALUE mod = rb_module_new();
|
|
|
|
RBASIC_SET_CLASS(mod, klass);
|
|
return mod;
|
|
}
|
|
|
|
static VALUE
|
|
rb_class_s_alloc(VALUE klass)
|
|
{
|
|
return rb_class_boot(0);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* Module.new -> mod
|
|
* Module.new {|mod| block } -> mod
|
|
*
|
|
* Creates a new anonymous module. If a block is given, it is passed
|
|
* the module object, and the block is evaluated in the context of this
|
|
* module using <code>module_eval</code>.
|
|
*
|
|
* fred = Module.new do
|
|
* def meth1
|
|
* "hello"
|
|
* end
|
|
* def meth2
|
|
* "bye"
|
|
* end
|
|
* end
|
|
* a = "my string"
|
|
* a.extend(fred) #=> "my string"
|
|
* a.meth1 #=> "hello"
|
|
* a.meth2 #=> "bye"
|
|
*
|
|
* Assign the module to a constant (name starting uppercase) if you
|
|
* want to treat it like a regular module.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_initialize(VALUE module)
|
|
{
|
|
if (rb_block_given_p()) {
|
|
rb_mod_module_exec(1, &module, module);
|
|
}
|
|
return Qnil;
|
|
}
|
|
|
|
/* :nodoc: */
|
|
static VALUE
|
|
rb_mod_initialize_clone(VALUE clone, VALUE orig)
|
|
{
|
|
VALUE ret;
|
|
ret = rb_obj_init_dup_clone(clone, orig);
|
|
if (OBJ_FROZEN(orig))
|
|
rb_class_name(clone);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* Class.new(super_class=Object) -> a_class
|
|
* Class.new(super_class=Object) { |mod| ... } -> a_class
|
|
*
|
|
* Creates a new anonymous (unnamed) class with the given superclass
|
|
* (or <code>Object</code> if no parameter is given). You can give a
|
|
* class a name by assigning the class object to a constant.
|
|
*
|
|
* If a block is given, it is passed the class object, and the block
|
|
* is evaluated in the context of this class using
|
|
* <code>class_eval</code>.
|
|
*
|
|
* fred = Class.new do
|
|
* def meth1
|
|
* "hello"
|
|
* end
|
|
* def meth2
|
|
* "bye"
|
|
* end
|
|
* end
|
|
*
|
|
* a = fred.new #=> #<#<Class:0x100381890>:0x100376b98>
|
|
* a.meth1 #=> "hello"
|
|
* a.meth2 #=> "bye"
|
|
*
|
|
* Assign the class to a constant (name starting uppercase) if you
|
|
* want to treat it like a regular class.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_class_initialize(int argc, VALUE *argv, VALUE klass)
|
|
{
|
|
VALUE super;
|
|
|
|
if (RCLASS_SUPER(klass) != 0 || klass == rb_cBasicObject) {
|
|
rb_raise(rb_eTypeError, "already initialized class");
|
|
}
|
|
if (argc == 0) {
|
|
super = rb_cObject;
|
|
}
|
|
else {
|
|
rb_scan_args(argc, argv, "01", &super);
|
|
rb_check_inheritable(super);
|
|
if (super != rb_cBasicObject && !RCLASS_SUPER(super)) {
|
|
rb_raise(rb_eTypeError, "can't inherit uninitialized class");
|
|
}
|
|
}
|
|
RCLASS_SET_SUPER(klass, super);
|
|
rb_make_metaclass(klass, RBASIC(super)->klass);
|
|
rb_class_inherited(super, klass);
|
|
rb_mod_initialize(klass);
|
|
|
|
return klass;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* class.allocate() -> obj
|
|
*
|
|
* Allocates space for a new object of <i>class</i>'s class and does not
|
|
* call initialize on the new instance. The returned object must be an
|
|
* instance of <i>class</i>.
|
|
*
|
|
* klass = Class.new do
|
|
* def initialize(*args)
|
|
* @initialized = true
|
|
* end
|
|
*
|
|
* def initialized?
|
|
* @initialized || false
|
|
* end
|
|
* end
|
|
*
|
|
* klass.allocate.initialized? #=> false
|
|
*
|
|
*/
|
|
|
|
VALUE
|
|
rb_obj_alloc(VALUE klass)
|
|
{
|
|
VALUE obj;
|
|
rb_alloc_func_t allocator;
|
|
|
|
if (RCLASS_SUPER(klass) == 0 && klass != rb_cBasicObject) {
|
|
rb_raise(rb_eTypeError, "can't instantiate uninitialized class");
|
|
}
|
|
if (FL_TEST(klass, FL_SINGLETON)) {
|
|
rb_raise(rb_eTypeError, "can't create instance of singleton class");
|
|
}
|
|
allocator = rb_get_alloc_func(klass);
|
|
if (!allocator) {
|
|
rb_raise(rb_eTypeError, "allocator undefined for %"PRIsVALUE,
|
|
klass);
|
|
}
|
|
|
|
#if !defined(DTRACE_PROBES_DISABLED) || !DTRACE_PROBES_DISABLED
|
|
if (RUBY_DTRACE_OBJECT_CREATE_ENABLED()) {
|
|
const char * file = rb_sourcefile();
|
|
RUBY_DTRACE_OBJECT_CREATE(rb_class2name(klass),
|
|
file ? file : "",
|
|
rb_sourceline());
|
|
}
|
|
#endif
|
|
|
|
obj = (*allocator)(klass);
|
|
|
|
if (rb_obj_class(obj) != rb_class_real(klass)) {
|
|
rb_raise(rb_eTypeError, "wrong instance allocation");
|
|
}
|
|
return obj;
|
|
}
|
|
|
|
static VALUE
|
|
rb_class_allocate_instance(VALUE klass)
|
|
{
|
|
NEWOBJ_OF(obj, struct RObject, klass, T_OBJECT | (RGENGC_WB_PROTECTED_OBJECT ? FL_WB_PROTECTED : 0));
|
|
return (VALUE)obj;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* class.new(args, ...) -> obj
|
|
*
|
|
* Calls <code>allocate</code> to create a new object of
|
|
* <i>class</i>'s class, then invokes that object's
|
|
* <code>initialize</code> method, passing it <i>args</i>.
|
|
* This is the method that ends up getting called whenever
|
|
* an object is constructed using .new.
|
|
*
|
|
*/
|
|
|
|
VALUE
|
|
rb_class_new_instance(int argc, const VALUE *argv, VALUE klass)
|
|
{
|
|
VALUE obj;
|
|
|
|
obj = rb_obj_alloc(klass);
|
|
rb_obj_call_init(obj, argc, argv);
|
|
|
|
return obj;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* class.superclass -> a_super_class or nil
|
|
*
|
|
* Returns the superclass of <i>class</i>, or <code>nil</code>.
|
|
*
|
|
* File.superclass #=> IO
|
|
* IO.superclass #=> Object
|
|
* Object.superclass #=> BasicObject
|
|
* class Foo; end
|
|
* class Bar < Foo; end
|
|
* Bar.superclass #=> Foo
|
|
*
|
|
* Returns nil when the given class does not have a parent class:
|
|
*
|
|
* BasicObject.superclass #=> nil
|
|
*
|
|
*/
|
|
|
|
VALUE
|
|
rb_class_superclass(VALUE klass)
|
|
{
|
|
VALUE super = RCLASS_SUPER(klass);
|
|
|
|
if (!super) {
|
|
if (klass == rb_cBasicObject) return Qnil;
|
|
rb_raise(rb_eTypeError, "uninitialized class");
|
|
}
|
|
while (RB_TYPE_P(super, T_ICLASS)) {
|
|
super = RCLASS_SUPER(super);
|
|
}
|
|
if (!super) {
|
|
return Qnil;
|
|
}
|
|
return super;
|
|
}
|
|
|
|
VALUE
|
|
rb_class_get_superclass(VALUE klass)
|
|
{
|
|
return RCLASS(klass)->super;
|
|
}
|
|
|
|
#define id_for_setter(name, type, message) \
|
|
check_setter_id(name, rb_is_##type##_sym, rb_is_##type##_name, message)
|
|
static ID
|
|
check_setter_id(VALUE name, int (*valid_sym_p)(VALUE), int (*valid_name_p)(VALUE),
|
|
const char *message)
|
|
{
|
|
ID id;
|
|
if (SYMBOL_P(name)) {
|
|
if (!valid_sym_p(name)) {
|
|
rb_name_error_str(name, message, QUOTE(rb_sym2str(name)));
|
|
}
|
|
id = SYM2ID(name);
|
|
}
|
|
else {
|
|
VALUE str = rb_check_string_type(name);
|
|
if (NIL_P(str)) {
|
|
rb_raise(rb_eTypeError, "% "PRIsVALUE" is not a symbol or string",
|
|
name);
|
|
}
|
|
if (!valid_name_p(str)) {
|
|
rb_name_error_str(str, message, QUOTE(str));
|
|
}
|
|
id = rb_intern_str(str);
|
|
}
|
|
return id;
|
|
}
|
|
|
|
static int
|
|
rb_is_attr_name(VALUE name)
|
|
{
|
|
return rb_is_local_name(name) || rb_is_const_name(name);
|
|
}
|
|
|
|
static int
|
|
rb_is_attr_sym(VALUE sym)
|
|
{
|
|
return rb_is_local_sym(sym) || rb_is_const_sym(sym);
|
|
}
|
|
|
|
static const char invalid_attribute_name[] = "invalid attribute name `%"PRIsVALUE"'";
|
|
|
|
static ID
|
|
id_for_attr(VALUE name)
|
|
{
|
|
return id_for_setter(name, attr, invalid_attribute_name);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* attr_reader(symbol, ...) -> nil
|
|
* attr(symbol, ...) -> nil
|
|
* attr_reader(string, ...) -> nil
|
|
* attr(string, ...) -> nil
|
|
*
|
|
* Creates instance variables and corresponding methods that return the
|
|
* value of each instance variable. Equivalent to calling
|
|
* ``<code>attr</code><i>:name</i>'' on each name in turn.
|
|
* String arguments are converted to symbols.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_attr_reader(int argc, VALUE *argv, VALUE klass)
|
|
{
|
|
int i;
|
|
|
|
for (i=0; i<argc; i++) {
|
|
rb_attr(klass, id_for_attr(argv[i]), TRUE, FALSE, TRUE);
|
|
}
|
|
return Qnil;
|
|
}
|
|
|
|
VALUE
|
|
rb_mod_attr(int argc, VALUE *argv, VALUE klass)
|
|
{
|
|
if (argc == 2 && (argv[1] == Qtrue || argv[1] == Qfalse)) {
|
|
rb_warning("optional boolean argument is obsoleted");
|
|
rb_attr(klass, id_for_attr(argv[0]), 1, RTEST(argv[1]), TRUE);
|
|
return Qnil;
|
|
}
|
|
return rb_mod_attr_reader(argc, argv, klass);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* attr_writer(symbol, ...) -> nil
|
|
* attr_writer(string, ...) -> nil
|
|
*
|
|
* Creates an accessor method to allow assignment to the attribute
|
|
* <i>symbol</i><code>.id2name</code>.
|
|
* String arguments are converted to symbols.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_attr_writer(int argc, VALUE *argv, VALUE klass)
|
|
{
|
|
int i;
|
|
|
|
for (i=0; i<argc; i++) {
|
|
rb_attr(klass, id_for_attr(argv[i]), FALSE, TRUE, TRUE);
|
|
}
|
|
return Qnil;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* attr_accessor(symbol, ...) -> nil
|
|
* attr_accessor(string, ...) -> nil
|
|
*
|
|
* Defines a named attribute for this module, where the name is
|
|
* <i>symbol.</i><code>id2name</code>, creating an instance variable
|
|
* (<code>@name</code>) and a corresponding access method to read it.
|
|
* Also creates a method called <code>name=</code> to set the attribute.
|
|
* String arguments are converted to symbols.
|
|
*
|
|
* module Mod
|
|
* attr_accessor(:one, :two)
|
|
* end
|
|
* Mod.instance_methods.sort #=> [:one, :one=, :two, :two=]
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_attr_accessor(int argc, VALUE *argv, VALUE klass)
|
|
{
|
|
int i;
|
|
|
|
for (i=0; i<argc; i++) {
|
|
rb_attr(klass, id_for_attr(argv[i]), TRUE, TRUE, TRUE);
|
|
}
|
|
return Qnil;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* mod.const_get(sym, inherit=true) -> obj
|
|
* mod.const_get(str, inherit=true) -> obj
|
|
*
|
|
* Checks for a constant with the given name in <i>mod</i>.
|
|
* If +inherit+ is set, the lookup will also search
|
|
* the ancestors (and +Object+ if <i>mod</i> is a +Module+).
|
|
*
|
|
* The value of the constant is returned if a definition is found,
|
|
* otherwise a +NameError+ is raised.
|
|
*
|
|
* Math.const_get(:PI) #=> 3.14159265358979
|
|
*
|
|
* This method will recursively look up constant names if a namespaced
|
|
* class name is provided. For example:
|
|
*
|
|
* module Foo; class Bar; end end
|
|
* Object.const_get 'Foo::Bar'
|
|
*
|
|
* The +inherit+ flag is respected on each lookup. For example:
|
|
*
|
|
* module Foo
|
|
* class Bar
|
|
* VAL = 10
|
|
* end
|
|
*
|
|
* class Baz < Bar; end
|
|
* end
|
|
*
|
|
* Object.const_get 'Foo::Baz::VAL' # => 10
|
|
* Object.const_get 'Foo::Baz::VAL', false # => NameError
|
|
*
|
|
* If the argument is not a valid constant name a +NameError+ will be
|
|
* raised with a warning "wrong constant name".
|
|
*
|
|
* Object.const_get 'foobar' #=> NameError: wrong constant name foobar
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_const_get(int argc, VALUE *argv, VALUE mod)
|
|
{
|
|
VALUE name, recur;
|
|
rb_encoding *enc;
|
|
const char *pbeg, *p, *path, *pend;
|
|
ID id;
|
|
|
|
rb_check_arity(argc, 1, 2);
|
|
name = argv[0];
|
|
recur = (argc == 1) ? Qtrue : argv[1];
|
|
|
|
if (SYMBOL_P(name)) {
|
|
if (!rb_is_const_sym(name)) goto wrong_name;
|
|
id = rb_check_id(&name);
|
|
if (!id) return rb_const_missing(mod, name);
|
|
return RTEST(recur) ? rb_const_get(mod, id) : rb_const_get_at(mod, id);
|
|
}
|
|
|
|
path = StringValuePtr(name);
|
|
enc = rb_enc_get(name);
|
|
|
|
if (!rb_enc_asciicompat(enc)) {
|
|
rb_raise(rb_eArgError, "invalid class path encoding (non ASCII)");
|
|
}
|
|
|
|
pbeg = p = path;
|
|
pend = path + RSTRING_LEN(name);
|
|
|
|
if (p >= pend || !*p) {
|
|
wrong_name:
|
|
rb_name_error_str(name, "wrong constant name % "PRIsVALUE, name);
|
|
}
|
|
|
|
if (p + 2 < pend && p[0] == ':' && p[1] == ':') {
|
|
mod = rb_cObject;
|
|
p += 2;
|
|
pbeg = p;
|
|
}
|
|
|
|
while (p < pend) {
|
|
VALUE part;
|
|
long len, beglen;
|
|
|
|
while (p < pend && *p != ':') p++;
|
|
|
|
if (pbeg == p) goto wrong_name;
|
|
|
|
id = rb_check_id_cstr(pbeg, len = p-pbeg, enc);
|
|
beglen = pbeg-path;
|
|
|
|
if (p < pend && p[0] == ':') {
|
|
if (p + 2 >= pend || p[1] != ':') goto wrong_name;
|
|
p += 2;
|
|
pbeg = p;
|
|
}
|
|
|
|
if (!RB_TYPE_P(mod, T_MODULE) && !RB_TYPE_P(mod, T_CLASS)) {
|
|
rb_raise(rb_eTypeError, "%"PRIsVALUE" does not refer to class/module",
|
|
QUOTE(name));
|
|
}
|
|
|
|
if (!id) {
|
|
part = rb_str_subseq(name, beglen, len);
|
|
OBJ_FREEZE(part);
|
|
if (!ISUPPER(*pbeg) || !rb_is_const_name(part)) {
|
|
rb_name_error_str(part, "wrong constant name %"PRIsVALUE,
|
|
QUOTE(part));
|
|
}
|
|
else if (!rb_method_basic_definition_p(CLASS_OF(mod), id_const_missing)) {
|
|
part = rb_str_intern(part);
|
|
mod = rb_const_missing(mod, part);
|
|
continue;
|
|
}
|
|
else {
|
|
rb_name_error_str(part, "uninitialized constant %"PRIsVALUE"% "PRIsVALUE,
|
|
rb_str_subseq(name, 0, beglen),
|
|
part);
|
|
}
|
|
}
|
|
if (!rb_is_const_id(id)) {
|
|
rb_name_error(id, "wrong constant name %"PRIsVALUE,
|
|
QUOTE_ID(id));
|
|
}
|
|
mod = RTEST(recur) ? rb_const_get(mod, id) : rb_const_get_at(mod, id);
|
|
}
|
|
|
|
return mod;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* mod.const_set(sym, obj) -> obj
|
|
* mod.const_set(str, obj) -> obj
|
|
*
|
|
* Sets the named constant to the given object, returning that object.
|
|
* Creates a new constant if no constant with the given name previously
|
|
* existed.
|
|
*
|
|
* Math.const_set("HIGH_SCHOOL_PI", 22.0/7.0) #=> 3.14285714285714
|
|
* Math::HIGH_SCHOOL_PI - Math::PI #=> 0.00126448926734968
|
|
*
|
|
* If +sym+ or +str+ is not a valid constant name a +NameError+ will be
|
|
* raised with a warning "wrong constant name".
|
|
*
|
|
* Object.const_set('foobar', 42) #=> NameError: wrong constant name foobar
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_const_set(VALUE mod, VALUE name, VALUE value)
|
|
{
|
|
ID id = id_for_setter(name, const, "wrong constant name %"PRIsVALUE);
|
|
rb_const_set(mod, id, value);
|
|
return value;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* mod.const_defined?(sym, inherit=true) -> true or false
|
|
* mod.const_defined?(str, inherit=true) -> true or false
|
|
*
|
|
* Says whether _mod_ or its ancestors have a constant with the given name:
|
|
*
|
|
* Float.const_defined?(:EPSILON) #=> true, found in Float itself
|
|
* Float.const_defined?("String") #=> true, found in Object (ancestor)
|
|
* BasicObject.const_defined?(:Hash) #=> false
|
|
*
|
|
* If _mod_ is a +Module+, additionally +Object+ and its ancestors are checked:
|
|
*
|
|
* Math.const_defined?(:String) #=> true, found in Object
|
|
*
|
|
* In each of the checked classes or modules, if the constant is not present
|
|
* but there is an autoload for it, +true+ is returned directly without
|
|
* autoloading:
|
|
*
|
|
* module Admin
|
|
* autoload :User, 'admin/user'
|
|
* end
|
|
* Admin.const_defined?(:User) #=> true
|
|
*
|
|
* If the constant is not found the callback +const_missing+ is *not* called
|
|
* and the method returns +false+.
|
|
*
|
|
* If +inherit+ is false, the lookup only checks the constants in the receiver:
|
|
*
|
|
* IO.const_defined?(:SYNC) #=> true, found in File::Constants (ancestor)
|
|
* IO.const_defined?(:SYNC, false) #=> false, not found in IO itself
|
|
*
|
|
* In this case, the same logic for autoloading applies.
|
|
*
|
|
* If the argument is not a valid constant name a +NameError+ is raised with the
|
|
* message "wrong constant name _name_":
|
|
*
|
|
* Hash.const_defined? 'foobar' #=> NameError: wrong constant name foobar
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_const_defined(int argc, VALUE *argv, VALUE mod)
|
|
{
|
|
VALUE name, recur;
|
|
rb_encoding *enc;
|
|
const char *pbeg, *p, *path, *pend;
|
|
ID id;
|
|
|
|
rb_check_arity(argc, 1, 2);
|
|
name = argv[0];
|
|
recur = (argc == 1) ? Qtrue : argv[1];
|
|
|
|
if (SYMBOL_P(name)) {
|
|
if (!rb_is_const_sym(name)) goto wrong_name;
|
|
id = rb_check_id(&name);
|
|
if (!id) return Qfalse;
|
|
return RTEST(recur) ? rb_const_defined(mod, id) : rb_const_defined_at(mod, id);
|
|
}
|
|
|
|
path = StringValuePtr(name);
|
|
enc = rb_enc_get(name);
|
|
|
|
if (!rb_enc_asciicompat(enc)) {
|
|
rb_raise(rb_eArgError, "invalid class path encoding (non ASCII)");
|
|
}
|
|
|
|
pbeg = p = path;
|
|
pend = path + RSTRING_LEN(name);
|
|
|
|
if (p >= pend || !*p) {
|
|
wrong_name:
|
|
rb_name_error_str(name, "wrong constant name % "PRIsVALUE, name);
|
|
}
|
|
|
|
if (p + 2 < pend && p[0] == ':' && p[1] == ':') {
|
|
mod = rb_cObject;
|
|
p += 2;
|
|
pbeg = p;
|
|
}
|
|
|
|
while (p < pend) {
|
|
VALUE part;
|
|
long len, beglen;
|
|
|
|
while (p < pend && *p != ':') p++;
|
|
|
|
if (pbeg == p) goto wrong_name;
|
|
|
|
id = rb_check_id_cstr(pbeg, len = p-pbeg, enc);
|
|
beglen = pbeg-path;
|
|
|
|
if (p < pend && p[0] == ':') {
|
|
if (p + 2 >= pend || p[1] != ':') goto wrong_name;
|
|
p += 2;
|
|
pbeg = p;
|
|
}
|
|
|
|
if (!id) {
|
|
part = rb_str_subseq(name, beglen, len);
|
|
OBJ_FREEZE(part);
|
|
if (!ISUPPER(*pbeg) || !rb_is_const_name(part)) {
|
|
rb_name_error_str(part, "wrong constant name %"PRIsVALUE,
|
|
QUOTE(part));
|
|
}
|
|
else {
|
|
return Qfalse;
|
|
}
|
|
}
|
|
if (!rb_is_const_id(id)) {
|
|
rb_name_error(id, "wrong constant name %"PRIsVALUE,
|
|
QUOTE_ID(id));
|
|
}
|
|
if (RTEST(recur)) {
|
|
if (!rb_const_defined(mod, id))
|
|
return Qfalse;
|
|
mod = rb_const_get(mod, id);
|
|
}
|
|
else {
|
|
if (!rb_const_defined_at(mod, id))
|
|
return Qfalse;
|
|
mod = rb_const_get_at(mod, id);
|
|
}
|
|
recur = Qfalse;
|
|
|
|
if (p < pend && !RB_TYPE_P(mod, T_MODULE) && !RB_TYPE_P(mod, T_CLASS)) {
|
|
rb_raise(rb_eTypeError, "%"PRIsVALUE" does not refer to class/module",
|
|
QUOTE(name));
|
|
}
|
|
}
|
|
|
|
return Qtrue;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* obj.instance_variable_get(symbol) -> obj
|
|
* obj.instance_variable_get(string) -> obj
|
|
*
|
|
* Returns the value of the given instance variable, or nil if the
|
|
* instance variable is not set. The <code>@</code> part of the
|
|
* variable name should be included for regular instance
|
|
* variables. Throws a <code>NameError</code> exception if the
|
|
* supplied symbol is not valid as an instance variable name.
|
|
* String arguments are converted to symbols.
|
|
*
|
|
* class Fred
|
|
* def initialize(p1, p2)
|
|
* @a, @b = p1, p2
|
|
* end
|
|
* end
|
|
* fred = Fred.new('cat', 99)
|
|
* fred.instance_variable_get(:@a) #=> "cat"
|
|
* fred.instance_variable_get("@b") #=> 99
|
|
*/
|
|
|
|
static VALUE
|
|
rb_obj_ivar_get(VALUE obj, VALUE iv)
|
|
{
|
|
ID id = rb_check_id(&iv);
|
|
|
|
if (!id) {
|
|
if (rb_is_instance_name(iv)) {
|
|
return Qnil;
|
|
}
|
|
else {
|
|
rb_name_error_str(iv, "`%"PRIsVALUE"' is not allowed as an instance variable name",
|
|
QUOTE(iv));
|
|
}
|
|
}
|
|
if (!rb_is_instance_id(id)) {
|
|
rb_name_error(id, "`%"PRIsVALUE"' is not allowed as an instance variable name",
|
|
QUOTE_ID(id));
|
|
}
|
|
return rb_ivar_get(obj, id);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* obj.instance_variable_set(symbol, obj) -> obj
|
|
* obj.instance_variable_set(string, obj) -> obj
|
|
*
|
|
* Sets the instance variable named by <i>symbol</i> to the given
|
|
* object, thereby frustrating the efforts of the class's
|
|
* author to attempt to provide proper encapsulation. The variable
|
|
* does not have to exist prior to this call.
|
|
* If the instance variable name is passed as a string, that string
|
|
* is converted to a symbol.
|
|
*
|
|
* class Fred
|
|
* def initialize(p1, p2)
|
|
* @a, @b = p1, p2
|
|
* end
|
|
* end
|
|
* fred = Fred.new('cat', 99)
|
|
* fred.instance_variable_set(:@a, 'dog') #=> "dog"
|
|
* fred.instance_variable_set(:@c, 'cat') #=> "cat"
|
|
* fred.inspect #=> "#<Fred:0x401b3da8 @a=\"dog\", @b=99, @c=\"cat\">"
|
|
*/
|
|
|
|
static VALUE
|
|
rb_obj_ivar_set(VALUE obj, VALUE iv, VALUE val)
|
|
{
|
|
ID id = id_for_setter(iv, instance, "`%"PRIsVALUE"' is not allowed as an instance variable name");
|
|
return rb_ivar_set(obj, id, val);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* obj.instance_variable_defined?(symbol) -> true or false
|
|
* obj.instance_variable_defined?(string) -> true or false
|
|
*
|
|
* Returns <code>true</code> if the given instance variable is
|
|
* defined in <i>obj</i>.
|
|
* String arguments are converted to symbols.
|
|
*
|
|
* class Fred
|
|
* def initialize(p1, p2)
|
|
* @a, @b = p1, p2
|
|
* end
|
|
* end
|
|
* fred = Fred.new('cat', 99)
|
|
* fred.instance_variable_defined?(:@a) #=> true
|
|
* fred.instance_variable_defined?("@b") #=> true
|
|
* fred.instance_variable_defined?("@c") #=> false
|
|
*/
|
|
|
|
static VALUE
|
|
rb_obj_ivar_defined(VALUE obj, VALUE iv)
|
|
{
|
|
ID id = rb_check_id(&iv);
|
|
|
|
if (!id) {
|
|
if (rb_is_instance_name(iv)) {
|
|
return Qfalse;
|
|
}
|
|
else {
|
|
rb_name_error_str(iv, "`%"PRIsVALUE"' is not allowed as an instance variable name",
|
|
QUOTE(iv));
|
|
}
|
|
}
|
|
if (!rb_is_instance_id(id)) {
|
|
rb_name_error(id, "`%"PRIsVALUE"' is not allowed as an instance variable name",
|
|
QUOTE_ID(id));
|
|
}
|
|
return rb_ivar_defined(obj, id);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* mod.class_variable_get(symbol) -> obj
|
|
* mod.class_variable_get(string) -> obj
|
|
*
|
|
* Returns the value of the given class variable (or throws a
|
|
* <code>NameError</code> exception). The <code>@@</code> part of the
|
|
* variable name should be included for regular class variables.
|
|
* String arguments are converted to symbols.
|
|
*
|
|
* class Fred
|
|
* @@foo = 99
|
|
* end
|
|
* Fred.class_variable_get(:@@foo) #=> 99
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_cvar_get(VALUE obj, VALUE iv)
|
|
{
|
|
ID id = rb_check_id(&iv);
|
|
|
|
if (!id) {
|
|
if (rb_is_class_name(iv)) {
|
|
rb_name_error_str(iv, "uninitialized class variable %"PRIsVALUE" in %"PRIsVALUE"",
|
|
iv, rb_class_name(obj));
|
|
}
|
|
else {
|
|
rb_name_error_str(iv, "`%"PRIsVALUE"' is not allowed as a class variable name",
|
|
QUOTE(iv));
|
|
}
|
|
}
|
|
if (!rb_is_class_id(id)) {
|
|
rb_name_error(id, "`%"PRIsVALUE"' is not allowed as a class variable name",
|
|
QUOTE_ID(id));
|
|
}
|
|
return rb_cvar_get(obj, id);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* obj.class_variable_set(symbol, obj) -> obj
|
|
* obj.class_variable_set(string, obj) -> obj
|
|
*
|
|
* Sets the class variable named by <i>symbol</i> to the given
|
|
* object.
|
|
* If the class variable name is passed as a string, that string
|
|
* is converted to a symbol.
|
|
*
|
|
* class Fred
|
|
* @@foo = 99
|
|
* def foo
|
|
* @@foo
|
|
* end
|
|
* end
|
|
* Fred.class_variable_set(:@@foo, 101) #=> 101
|
|
* Fred.new.foo #=> 101
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_cvar_set(VALUE obj, VALUE iv, VALUE val)
|
|
{
|
|
ID id = id_for_setter(iv, class, "`%"PRIsVALUE"' is not allowed as a class variable name");
|
|
rb_cvar_set(obj, id, val);
|
|
return val;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* obj.class_variable_defined?(symbol) -> true or false
|
|
* obj.class_variable_defined?(string) -> true or false
|
|
*
|
|
* Returns <code>true</code> if the given class variable is defined
|
|
* in <i>obj</i>.
|
|
* String arguments are converted to symbols.
|
|
*
|
|
* class Fred
|
|
* @@foo = 99
|
|
* end
|
|
* Fred.class_variable_defined?(:@@foo) #=> true
|
|
* Fred.class_variable_defined?(:@@bar) #=> false
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_cvar_defined(VALUE obj, VALUE iv)
|
|
{
|
|
ID id = rb_check_id(&iv);
|
|
|
|
if (!id) {
|
|
if (rb_is_class_name(iv)) {
|
|
return Qfalse;
|
|
}
|
|
else {
|
|
rb_name_error_str(iv, "`%"PRIsVALUE"' is not allowed as a class variable name",
|
|
QUOTE(iv));
|
|
}
|
|
}
|
|
if (!rb_is_class_id(id)) {
|
|
rb_name_error(id, "`%"PRIsVALUE"' is not allowed as a class variable name",
|
|
QUOTE_ID(id));
|
|
}
|
|
return rb_cvar_defined(obj, id);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* mod.singleton_class? -> true or false
|
|
*
|
|
* Returns <code>true</code> if <i>mod</i> is a singleton class or
|
|
* <code>false</code> if it is an ordinary class or module.
|
|
*
|
|
* class C
|
|
* end
|
|
* C.singleton_class? #=> false
|
|
* C.singleton_class.singleton_class? #=> true
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_singleton_p(VALUE klass)
|
|
{
|
|
if (RB_TYPE_P(klass, T_CLASS) && FL_TEST(klass, FL_SINGLETON))
|
|
return Qtrue;
|
|
return Qfalse;
|
|
}
|
|
|
|
static const struct conv_method_tbl {
|
|
const char method[6];
|
|
unsigned short id;
|
|
} conv_method_names[] = {
|
|
#define M(n) {#n, (unsigned short)idTo_##n}
|
|
M(int),
|
|
M(ary),
|
|
M(str),
|
|
M(sym),
|
|
M(hash),
|
|
M(proc),
|
|
M(io),
|
|
M(a),
|
|
M(s),
|
|
M(i),
|
|
#undef M
|
|
};
|
|
#define IMPLICIT_CONVERSIONS 7
|
|
|
|
static VALUE
|
|
convert_type(VALUE val, const char *tname, const char *method, int raise)
|
|
{
|
|
ID m = 0;
|
|
int i = numberof(conv_method_names);
|
|
VALUE r;
|
|
static const char prefix[] = "to_";
|
|
|
|
if (strncmp(prefix, method, sizeof(prefix)-1) == 0) {
|
|
const char *const meth = &method[sizeof(prefix)-1];
|
|
for (i=0; i < numberof(conv_method_names); i++) {
|
|
if (conv_method_names[i].method[0] == meth[0] &&
|
|
strcmp(conv_method_names[i].method, meth) == 0) {
|
|
m = conv_method_names[i].id;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (!m) m = rb_intern(method);
|
|
r = rb_check_funcall(val, m, 0, 0);
|
|
if (r == Qundef) {
|
|
if (raise) {
|
|
const char *msg = i < IMPLICIT_CONVERSIONS ?
|
|
"no implicit conversion of" : "can't convert";
|
|
const char *cname = NIL_P(val) ? "nil" :
|
|
val == Qtrue ? "true" :
|
|
val == Qfalse ? "false" :
|
|
NULL;
|
|
if (cname)
|
|
rb_raise(rb_eTypeError, "%s %s into %s", msg, cname, tname);
|
|
rb_raise(rb_eTypeError, "%s %"PRIsVALUE" into %s", msg,
|
|
rb_obj_class(val),
|
|
tname);
|
|
}
|
|
return Qnil;
|
|
}
|
|
return r;
|
|
}
|
|
|
|
NORETURN(static void conversion_mismatch(VALUE, const char *, const char *, VALUE));
|
|
static void
|
|
conversion_mismatch(VALUE val, const char *tname, const char *method, VALUE result)
|
|
{
|
|
VALUE cname = rb_obj_class(val);
|
|
rb_raise(rb_eTypeError,
|
|
"can't convert %"PRIsVALUE" to %s (%"PRIsVALUE"#%s gives %"PRIsVALUE")",
|
|
cname, tname, cname, method, rb_obj_class(result));
|
|
}
|
|
|
|
VALUE
|
|
rb_convert_type(VALUE val, int type, const char *tname, const char *method)
|
|
{
|
|
VALUE v;
|
|
|
|
if (TYPE(val) == type) return val;
|
|
v = convert_type(val, tname, method, TRUE);
|
|
if (TYPE(v) != type) {
|
|
conversion_mismatch(val, tname, method, v);
|
|
}
|
|
return v;
|
|
}
|
|
|
|
VALUE
|
|
rb_check_convert_type(VALUE val, int type, const char *tname, const char *method)
|
|
{
|
|
VALUE v;
|
|
|
|
/* always convert T_DATA */
|
|
if (TYPE(val) == type && type != T_DATA) return val;
|
|
v = convert_type(val, tname, method, FALSE);
|
|
if (NIL_P(v)) return Qnil;
|
|
if (TYPE(v) != type) {
|
|
conversion_mismatch(val, tname, method, v);
|
|
}
|
|
return v;
|
|
}
|
|
|
|
|
|
static VALUE
|
|
rb_to_integer(VALUE val, const char *method)
|
|
{
|
|
VALUE v;
|
|
|
|
if (FIXNUM_P(val)) return val;
|
|
if (RB_TYPE_P(val, T_BIGNUM)) return val;
|
|
v = convert_type(val, "Integer", method, TRUE);
|
|
if (!rb_obj_is_kind_of(v, rb_cInteger)) {
|
|
conversion_mismatch(val, "Integer", method, v);
|
|
}
|
|
return v;
|
|
}
|
|
|
|
VALUE
|
|
rb_check_to_integer(VALUE val, const char *method)
|
|
{
|
|
VALUE v;
|
|
|
|
if (FIXNUM_P(val)) return val;
|
|
if (RB_TYPE_P(val, T_BIGNUM)) return val;
|
|
v = convert_type(val, "Integer", method, FALSE);
|
|
if (!rb_obj_is_kind_of(v, rb_cInteger)) {
|
|
return Qnil;
|
|
}
|
|
return v;
|
|
}
|
|
|
|
VALUE
|
|
rb_to_int(VALUE val)
|
|
{
|
|
return rb_to_integer(val, "to_int");
|
|
}
|
|
|
|
VALUE
|
|
rb_check_to_int(VALUE val)
|
|
{
|
|
return rb_check_to_integer(val, "to_int");
|
|
}
|
|
|
|
static VALUE
|
|
rb_convert_to_integer(VALUE val, int base)
|
|
{
|
|
VALUE tmp;
|
|
|
|
switch (TYPE(val)) {
|
|
case T_FLOAT:
|
|
if (base != 0) goto arg_error;
|
|
if (RFLOAT_VALUE(val) <= (double)FIXNUM_MAX
|
|
&& RFLOAT_VALUE(val) >= (double)FIXNUM_MIN) {
|
|
break;
|
|
}
|
|
return rb_dbl2big(RFLOAT_VALUE(val));
|
|
|
|
case T_FIXNUM:
|
|
case T_BIGNUM:
|
|
if (base != 0) goto arg_error;
|
|
return val;
|
|
|
|
case T_STRING:
|
|
string_conv:
|
|
return rb_str_to_inum(val, base, TRUE);
|
|
|
|
case T_NIL:
|
|
if (base != 0) goto arg_error;
|
|
rb_raise(rb_eTypeError, "can't convert nil into Integer");
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
if (base != 0) {
|
|
tmp = rb_check_string_type(val);
|
|
if (!NIL_P(tmp)) goto string_conv;
|
|
arg_error:
|
|
rb_raise(rb_eArgError, "base specified for non string value");
|
|
}
|
|
tmp = convert_type(val, "Integer", "to_int", FALSE);
|
|
if (NIL_P(tmp)) {
|
|
return rb_to_integer(val, "to_i");
|
|
}
|
|
return tmp;
|
|
|
|
}
|
|
|
|
VALUE
|
|
rb_Integer(VALUE val)
|
|
{
|
|
return rb_convert_to_integer(val, 0);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* Integer(arg, base=0) -> integer
|
|
*
|
|
* Converts <i>arg</i> to a <code>Fixnum</code> or <code>Bignum</code>.
|
|
* Numeric types are converted directly (with floating point numbers
|
|
* being truncated). <i>base</i> (0, or between 2 and 36) is a base for
|
|
* integer string representation. If <i>arg</i> is a <code>String</code>,
|
|
* when <i>base</i> is omitted or equals zero, radix indicators
|
|
* (<code>0</code>, <code>0b</code>, and <code>0x</code>) are honored.
|
|
* In any case, strings should be strictly conformed to numeric
|
|
* representation. This behavior is different from that of
|
|
* <code>String#to_i</code>. Non string values will be converted by first
|
|
* trying <code>to_int</code>, then <code>to_i</code>. Passing <code>nil</code>
|
|
* raises a TypeError.
|
|
*
|
|
* Integer(123.999) #=> 123
|
|
* Integer("0x1a") #=> 26
|
|
* Integer(Time.new) #=> 1204973019
|
|
* Integer("0930", 10) #=> 930
|
|
* Integer("111", 2) #=> 7
|
|
* Integer(nil) #=> TypeError
|
|
*/
|
|
|
|
static VALUE
|
|
rb_f_integer(int argc, VALUE *argv, VALUE obj)
|
|
{
|
|
VALUE arg = Qnil;
|
|
int base = 0;
|
|
|
|
switch (argc) {
|
|
case 2:
|
|
base = NUM2INT(argv[1]);
|
|
case 1:
|
|
arg = argv[0];
|
|
break;
|
|
default:
|
|
/* should cause ArgumentError */
|
|
rb_scan_args(argc, argv, "11", NULL, NULL);
|
|
}
|
|
return rb_convert_to_integer(arg, base);
|
|
}
|
|
|
|
double
|
|
rb_cstr_to_dbl(const char *p, int badcheck)
|
|
{
|
|
const char *q;
|
|
char *end;
|
|
double d;
|
|
const char *ellipsis = "";
|
|
int w;
|
|
enum {max_width = 20};
|
|
#define OutOfRange() ((end - p > max_width) ? \
|
|
(w = max_width, ellipsis = "...") : \
|
|
(w = (int)(end - p), ellipsis = ""))
|
|
|
|
if (!p) return 0.0;
|
|
q = p;
|
|
while (ISSPACE(*p)) p++;
|
|
|
|
if (!badcheck && p[0] == '0' && (p[1] == 'x' || p[1] == 'X')) {
|
|
return 0.0;
|
|
}
|
|
|
|
d = strtod(p, &end);
|
|
if (errno == ERANGE) {
|
|
OutOfRange();
|
|
rb_warning("Float %.*s%s out of range", w, p, ellipsis);
|
|
errno = 0;
|
|
}
|
|
if (p == end) {
|
|
if (badcheck) {
|
|
bad:
|
|
rb_invalid_str(q, "Float()");
|
|
}
|
|
return d;
|
|
}
|
|
if (*end) {
|
|
char buf[DBL_DIG * 4 + 10];
|
|
char *n = buf;
|
|
char *e = buf + sizeof(buf) - 1;
|
|
char prev = 0;
|
|
|
|
while (p < end && n < e) prev = *n++ = *p++;
|
|
while (*p) {
|
|
if (*p == '_') {
|
|
/* remove underscores between digits */
|
|
if (badcheck) {
|
|
if (n == buf || !ISDIGIT(prev)) goto bad;
|
|
++p;
|
|
if (!ISDIGIT(*p)) goto bad;
|
|
}
|
|
else {
|
|
while (*++p == '_');
|
|
continue;
|
|
}
|
|
}
|
|
prev = *p++;
|
|
if (n < e) *n++ = prev;
|
|
}
|
|
*n = '\0';
|
|
p = buf;
|
|
|
|
if (!badcheck && p[0] == '0' && (p[1] == 'x' || p[1] == 'X')) {
|
|
return 0.0;
|
|
}
|
|
|
|
d = strtod(p, &end);
|
|
if (errno == ERANGE) {
|
|
OutOfRange();
|
|
rb_warning("Float %.*s%s out of range", w, p, ellipsis);
|
|
errno = 0;
|
|
}
|
|
if (badcheck) {
|
|
if (!end || p == end) goto bad;
|
|
while (*end && ISSPACE(*end)) end++;
|
|
if (*end) goto bad;
|
|
}
|
|
}
|
|
if (errno == ERANGE) {
|
|
errno = 0;
|
|
OutOfRange();
|
|
rb_raise(rb_eArgError, "Float %.*s%s out of range", w, q, ellipsis);
|
|
}
|
|
return d;
|
|
}
|
|
|
|
double
|
|
rb_str_to_dbl(VALUE str, int badcheck)
|
|
{
|
|
char *s;
|
|
long len;
|
|
double ret;
|
|
VALUE v = 0;
|
|
|
|
StringValue(str);
|
|
s = RSTRING_PTR(str);
|
|
len = RSTRING_LEN(str);
|
|
if (s) {
|
|
if (badcheck && memchr(s, '\0', len)) {
|
|
rb_raise(rb_eArgError, "string for Float contains null byte");
|
|
}
|
|
if (s[len]) { /* no sentinel somehow */
|
|
char *p = ALLOCV(v, len);
|
|
MEMCPY(p, s, char, len);
|
|
p[len] = '\0';
|
|
s = p;
|
|
}
|
|
}
|
|
ret = rb_cstr_to_dbl(s, badcheck);
|
|
if (v)
|
|
ALLOCV_END(v);
|
|
return ret;
|
|
}
|
|
|
|
VALUE
|
|
rb_Float(VALUE val)
|
|
{
|
|
switch (TYPE(val)) {
|
|
case T_FIXNUM:
|
|
return DBL2NUM((double)FIX2LONG(val));
|
|
|
|
case T_FLOAT:
|
|
return val;
|
|
|
|
case T_BIGNUM:
|
|
return DBL2NUM(rb_big2dbl(val));
|
|
|
|
case T_STRING:
|
|
return DBL2NUM(rb_str_to_dbl(val, TRUE));
|
|
|
|
case T_NIL:
|
|
rb_raise(rb_eTypeError, "can't convert nil into Float");
|
|
break;
|
|
|
|
default:
|
|
return rb_convert_type(val, T_FLOAT, "Float", "to_f");
|
|
}
|
|
|
|
UNREACHABLE;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* Float(arg) -> float
|
|
*
|
|
* Returns <i>arg</i> converted to a float. Numeric types are converted
|
|
* directly, the rest are converted using <i>arg</i>.to_f.
|
|
* Converting <code>nil</code> generates a <code>TypeError</code>.
|
|
*
|
|
* Float(1) #=> 1.0
|
|
* Float("123.456") #=> 123.456
|
|
*/
|
|
|
|
static VALUE
|
|
rb_f_float(VALUE obj, VALUE arg)
|
|
{
|
|
return rb_Float(arg);
|
|
}
|
|
|
|
VALUE
|
|
rb_to_float(VALUE val)
|
|
{
|
|
if (RB_TYPE_P(val, T_FLOAT)) return val;
|
|
if (!rb_obj_is_kind_of(val, rb_cNumeric)) {
|
|
rb_raise(rb_eTypeError, "can't convert %s into Float",
|
|
NIL_P(val) ? "nil" :
|
|
val == Qtrue ? "true" :
|
|
val == Qfalse ? "false" :
|
|
rb_obj_classname(val));
|
|
}
|
|
return rb_convert_type(val, T_FLOAT, "Float", "to_f");
|
|
}
|
|
|
|
VALUE
|
|
rb_check_to_float(VALUE val)
|
|
{
|
|
if (RB_TYPE_P(val, T_FLOAT)) return val;
|
|
if (!rb_obj_is_kind_of(val, rb_cNumeric)) {
|
|
return Qnil;
|
|
}
|
|
return rb_check_convert_type(val, T_FLOAT, "Float", "to_f");
|
|
}
|
|
|
|
double
|
|
rb_num2dbl(VALUE val)
|
|
{
|
|
switch (TYPE(val)) {
|
|
case T_FLOAT:
|
|
return RFLOAT_VALUE(val);
|
|
|
|
case T_STRING:
|
|
rb_raise(rb_eTypeError, "no implicit conversion to float from string");
|
|
break;
|
|
|
|
case T_NIL:
|
|
rb_raise(rb_eTypeError, "no implicit conversion to float from nil");
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return RFLOAT_VALUE(rb_Float(val));
|
|
}
|
|
|
|
VALUE
|
|
rb_String(VALUE val)
|
|
{
|
|
VALUE tmp = rb_check_string_type(val);
|
|
if (NIL_P(tmp))
|
|
tmp = rb_convert_type(val, T_STRING, "String", "to_s");
|
|
return tmp;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* String(arg) -> string
|
|
*
|
|
* Returns <i>arg</i> as a <code>String</code>.
|
|
*
|
|
* First tries to call its <code>to_str</code> method, then its <code>to_s</code> method.
|
|
*
|
|
* String(self) #=> "main"
|
|
* String(self.class) #=> "Object"
|
|
* String(123456) #=> "123456"
|
|
*/
|
|
|
|
static VALUE
|
|
rb_f_string(VALUE obj, VALUE arg)
|
|
{
|
|
return rb_String(arg);
|
|
}
|
|
|
|
VALUE
|
|
rb_Array(VALUE val)
|
|
{
|
|
VALUE tmp = rb_check_array_type(val);
|
|
|
|
if (NIL_P(tmp)) {
|
|
tmp = rb_check_convert_type(val, T_ARRAY, "Array", "to_a");
|
|
if (NIL_P(tmp)) {
|
|
return rb_ary_new3(1, val);
|
|
}
|
|
}
|
|
return tmp;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* Array(arg) -> array
|
|
*
|
|
* Returns +arg+ as an Array.
|
|
*
|
|
* First tries to call <code>to_ary</code> on +arg+, then <code>to_a</code>.
|
|
*
|
|
* Array(1..5) #=> [1, 2, 3, 4, 5]
|
|
*/
|
|
|
|
static VALUE
|
|
rb_f_array(VALUE obj, VALUE arg)
|
|
{
|
|
return rb_Array(arg);
|
|
}
|
|
|
|
VALUE
|
|
rb_Hash(VALUE val)
|
|
{
|
|
VALUE tmp;
|
|
|
|
if (NIL_P(val)) return rb_hash_new();
|
|
tmp = rb_check_hash_type(val);
|
|
if (NIL_P(tmp)) {
|
|
if (RB_TYPE_P(val, T_ARRAY) && RARRAY_LEN(val) == 0)
|
|
return rb_hash_new();
|
|
rb_raise(rb_eTypeError, "can't convert %s into Hash", rb_obj_classname(val));
|
|
}
|
|
return tmp;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* Hash(arg) -> hash
|
|
*
|
|
* Converts <i>arg</i> to a <code>Hash</code> by calling
|
|
* <i>arg</i><code>.to_hash</code>. Returns an empty <code>Hash</code> when
|
|
* <i>arg</i> is <tt>nil</tt> or <tt>[]</tt>.
|
|
*
|
|
* Hash([]) #=> {}
|
|
* Hash(nil) #=> {}
|
|
* Hash(key: :value) #=> {:key => :value}
|
|
* Hash([1, 2, 3]) #=> TypeError
|
|
*/
|
|
|
|
static VALUE
|
|
rb_f_hash(VALUE obj, VALUE arg)
|
|
{
|
|
return rb_Hash(arg);
|
|
}
|
|
|
|
/*
|
|
* Document-class: Class
|
|
*
|
|
* Classes in Ruby are first-class objects---each is an instance of
|
|
* class <code>Class</code>.
|
|
*
|
|
* Typically, you create a new class by using:
|
|
*
|
|
* class Name
|
|
* # some code describing the class behavior
|
|
* end
|
|
*
|
|
* When a new class is created, an object of type Class is initialized and
|
|
* assigned to a global constant (<code>Name</code> in this case).
|
|
*
|
|
* When <code>Name.new</code> is called to create a new object, the
|
|
* <code>new</code> method in <code>Class</code> is run by default.
|
|
* This can be demonstrated by overriding <code>new</code> in
|
|
* <code>Class</code>:
|
|
*
|
|
* class Class
|
|
* alias old_new new
|
|
* def new(*args)
|
|
* print "Creating a new ", self.name, "\n"
|
|
* old_new(*args)
|
|
* end
|
|
* end
|
|
*
|
|
* class Name
|
|
* end
|
|
*
|
|
* n = Name.new
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* Creating a new Name
|
|
*
|
|
* Classes, modules, and objects are interrelated. In the diagram
|
|
* that follows, the vertical arrows represent inheritance, and the
|
|
* parentheses metaclasses. All metaclasses are instances
|
|
* of the class `Class'.
|
|
* +---------+ +-...
|
|
* | | |
|
|
* BasicObject-----|-->(BasicObject)-------|-...
|
|
* ^ | ^ |
|
|
* | | | |
|
|
* Object---------|----->(Object)---------|-...
|
|
* ^ | ^ |
|
|
* | | | |
|
|
* +-------+ | +--------+ |
|
|
* | | | | | |
|
|
* | Module-|---------|--->(Module)-|-...
|
|
* | ^ | | ^ |
|
|
* | | | | | |
|
|
* | Class-|---------|---->(Class)-|-...
|
|
* | ^ | | ^ |
|
|
* | +---+ | +----+
|
|
* | |
|
|
* obj--->OtherClass---------->(OtherClass)-----------...
|
|
*
|
|
*/
|
|
|
|
|
|
/*!
|
|
* Initializes the world of objects and classes.
|
|
*
|
|
* At first, the function bootstraps the class hierarchy.
|
|
* It initializes the most fundamental classes and their metaclasses.
|
|
* - \c BasicObject
|
|
* - \c Object
|
|
* - \c Module
|
|
* - \c Class
|
|
* After the bootstrap step, the class hierarchy becomes as the following
|
|
* diagram.
|
|
*
|
|
* \image html boottime-classes.png
|
|
*
|
|
* Then, the function defines classes, modules and methods as usual.
|
|
* \ingroup class
|
|
*/
|
|
|
|
/* Document-class: BasicObject
|
|
*
|
|
* BasicObject is the parent class of all classes in Ruby. It's an explicit
|
|
* blank class.
|
|
*
|
|
* BasicObject can be used for creating object hierarchies independent of
|
|
* Ruby's object hierarchy, proxy objects like the Delegator class, or other
|
|
* uses where namespace pollution from Ruby's methods and classes must be
|
|
* avoided.
|
|
*
|
|
* To avoid polluting BasicObject for other users an appropriately named
|
|
* subclass of BasicObject should be created instead of directly modifying
|
|
* BasicObject:
|
|
*
|
|
* class MyObjectSystem < BasicObject
|
|
* end
|
|
*
|
|
* BasicObject does not include Kernel (for methods like +puts+) and
|
|
* BasicObject is outside of the namespace of the standard library so common
|
|
* classes will not be found without using a full class path.
|
|
*
|
|
* A variety of strategies can be used to provide useful portions of the
|
|
* standard library to subclasses of BasicObject. A subclass could
|
|
* <code>include Kernel</code> to obtain +puts+, +exit+, etc. A custom
|
|
* Kernel-like module could be created and included or delegation can be used
|
|
* via #method_missing:
|
|
*
|
|
* class MyObjectSystem < BasicObject
|
|
* DELEGATE = [:puts, :p]
|
|
*
|
|
* def method_missing(name, *args, &block)
|
|
* super unless DELEGATE.include? name
|
|
* ::Kernel.send(name, *args, &block)
|
|
* end
|
|
*
|
|
* def respond_to_missing?(name, include_private = false)
|
|
* DELEGATE.include?(name) or super
|
|
* end
|
|
* end
|
|
*
|
|
* Access to classes and modules from the Ruby standard library can be
|
|
* obtained in a BasicObject subclass by referencing the desired constant
|
|
* from the root like <code>::File</code> or <code>::Enumerator</code>.
|
|
* Like #method_missing, #const_missing can be used to delegate constant
|
|
* lookup to +Object+:
|
|
*
|
|
* class MyObjectSystem < BasicObject
|
|
* def self.const_missing(name)
|
|
* ::Object.const_get(name)
|
|
* end
|
|
* end
|
|
*/
|
|
|
|
/* Document-class: Object
|
|
*
|
|
* Object is the default root of all Ruby objects. Object inherits from
|
|
* BasicObject which allows creating alternate object hierarchies. Methods
|
|
* on Object are available to all classes unless explicitly overridden.
|
|
*
|
|
* Object mixes in the Kernel module, making the built-in kernel functions
|
|
* globally accessible. Although the instance methods of Object are defined
|
|
* by the Kernel module, we have chosen to document them here for clarity.
|
|
*
|
|
* When referencing constants in classes inheriting from Object you do not
|
|
* need to use the full namespace. For example, referencing +File+ inside
|
|
* +YourClass+ will find the top-level File class.
|
|
*
|
|
* In the descriptions of Object's methods, the parameter <i>symbol</i> refers
|
|
* to a symbol, which is either a quoted string or a Symbol (such as
|
|
* <code>:name</code>).
|
|
*/
|
|
|
|
void
|
|
Init_Object(void)
|
|
{
|
|
Init_class_hierarchy();
|
|
|
|
#if 0
|
|
// teach RDoc about these classes
|
|
rb_cBasicObject = rb_define_class("BasicObject", Qnil);
|
|
rb_cObject = rb_define_class("Object", rb_cBasicObject);
|
|
rb_cModule = rb_define_class("Module", rb_cObject);
|
|
rb_cClass = rb_define_class("Class", rb_cModule);
|
|
#endif
|
|
|
|
#undef rb_intern
|
|
#define rb_intern(str) rb_intern_const(str)
|
|
|
|
rb_define_private_method(rb_cBasicObject, "initialize", rb_obj_dummy, 0);
|
|
rb_define_alloc_func(rb_cBasicObject, rb_class_allocate_instance);
|
|
rb_define_method(rb_cBasicObject, "==", rb_obj_equal, 1);
|
|
rb_define_method(rb_cBasicObject, "equal?", rb_obj_equal, 1);
|
|
rb_define_method(rb_cBasicObject, "!", rb_obj_not, 0);
|
|
rb_define_method(rb_cBasicObject, "!=", rb_obj_not_equal, 1);
|
|
|
|
rb_define_private_method(rb_cBasicObject, "singleton_method_added", rb_obj_dummy, 1);
|
|
rb_define_private_method(rb_cBasicObject, "singleton_method_removed", rb_obj_dummy, 1);
|
|
rb_define_private_method(rb_cBasicObject, "singleton_method_undefined", rb_obj_dummy, 1);
|
|
|
|
/* Document-module: Kernel
|
|
*
|
|
* The Kernel module is included by class Object, so its methods are
|
|
* available in every Ruby object.
|
|
*
|
|
* The Kernel instance methods are documented in class Object while the
|
|
* module methods are documented here. These methods are called without a
|
|
* receiver and thus can be called in functional form:
|
|
*
|
|
* sprintf "%.1f", 1.234 #=> "1.2"
|
|
*
|
|
*/
|
|
rb_mKernel = rb_define_module("Kernel");
|
|
rb_include_module(rb_cObject, rb_mKernel);
|
|
rb_define_private_method(rb_cClass, "inherited", rb_obj_dummy, 1);
|
|
rb_define_private_method(rb_cModule, "included", rb_obj_dummy, 1);
|
|
rb_define_private_method(rb_cModule, "extended", rb_obj_dummy, 1);
|
|
rb_define_private_method(rb_cModule, "prepended", rb_obj_dummy, 1);
|
|
rb_define_private_method(rb_cModule, "method_added", rb_obj_dummy, 1);
|
|
rb_define_private_method(rb_cModule, "method_removed", rb_obj_dummy, 1);
|
|
rb_define_private_method(rb_cModule, "method_undefined", rb_obj_dummy, 1);
|
|
|
|
rb_define_method(rb_mKernel, "nil?", rb_false, 0);
|
|
rb_define_method(rb_mKernel, "===", rb_equal, 1);
|
|
rb_define_method(rb_mKernel, "=~", rb_obj_match, 1);
|
|
rb_define_method(rb_mKernel, "!~", rb_obj_not_match, 1);
|
|
rb_define_method(rb_mKernel, "eql?", rb_obj_equal, 1);
|
|
rb_define_method(rb_mKernel, "hash", rb_obj_hash, 0);
|
|
rb_define_method(rb_mKernel, "<=>", rb_obj_cmp, 1);
|
|
|
|
rb_define_method(rb_mKernel, "class", rb_obj_class, 0);
|
|
rb_define_method(rb_mKernel, "singleton_class", rb_obj_singleton_class, 0);
|
|
rb_define_method(rb_mKernel, "clone", rb_obj_clone, 0);
|
|
rb_define_method(rb_mKernel, "dup", rb_obj_dup, 0);
|
|
rb_define_method(rb_mKernel, "itself", rb_obj_itself, 0);
|
|
rb_define_method(rb_mKernel, "initialize_copy", rb_obj_init_copy, 1);
|
|
rb_define_method(rb_mKernel, "initialize_dup", rb_obj_init_dup_clone, 1);
|
|
rb_define_method(rb_mKernel, "initialize_clone", rb_obj_init_dup_clone, 1);
|
|
|
|
rb_define_method(rb_mKernel, "taint", rb_obj_taint, 0);
|
|
rb_define_method(rb_mKernel, "tainted?", rb_obj_tainted, 0);
|
|
rb_define_method(rb_mKernel, "untaint", rb_obj_untaint, 0);
|
|
rb_define_method(rb_mKernel, "untrust", rb_obj_untrust, 0);
|
|
rb_define_method(rb_mKernel, "untrusted?", rb_obj_untrusted, 0);
|
|
rb_define_method(rb_mKernel, "trust", rb_obj_trust, 0);
|
|
rb_define_method(rb_mKernel, "freeze", rb_obj_freeze, 0);
|
|
rb_define_method(rb_mKernel, "frozen?", rb_obj_frozen_p, 0);
|
|
|
|
rb_define_method(rb_mKernel, "to_s", rb_any_to_s, 0);
|
|
rb_define_method(rb_mKernel, "inspect", rb_obj_inspect, 0);
|
|
rb_define_method(rb_mKernel, "methods", rb_obj_methods, -1); /* in class.c */
|
|
rb_define_method(rb_mKernel, "singleton_methods", rb_obj_singleton_methods, -1); /* in class.c */
|
|
rb_define_method(rb_mKernel, "protected_methods", rb_obj_protected_methods, -1); /* in class.c */
|
|
rb_define_method(rb_mKernel, "private_methods", rb_obj_private_methods, -1); /* in class.c */
|
|
rb_define_method(rb_mKernel, "public_methods", rb_obj_public_methods, -1); /* in class.c */
|
|
rb_define_method(rb_mKernel, "instance_variables", rb_obj_instance_variables, 0); /* in variable.c */
|
|
rb_define_method(rb_mKernel, "instance_variable_get", rb_obj_ivar_get, 1);
|
|
rb_define_method(rb_mKernel, "instance_variable_set", rb_obj_ivar_set, 2);
|
|
rb_define_method(rb_mKernel, "instance_variable_defined?", rb_obj_ivar_defined, 1);
|
|
rb_define_method(rb_mKernel, "remove_instance_variable",
|
|
rb_obj_remove_instance_variable, 1); /* in variable.c */
|
|
|
|
rb_define_method(rb_mKernel, "instance_of?", rb_obj_is_instance_of, 1);
|
|
rb_define_method(rb_mKernel, "kind_of?", rb_obj_is_kind_of, 1);
|
|
rb_define_method(rb_mKernel, "is_a?", rb_obj_is_kind_of, 1);
|
|
rb_define_method(rb_mKernel, "tap", rb_obj_tap, 0);
|
|
|
|
rb_define_global_function("sprintf", rb_f_sprintf, -1); /* in sprintf.c */
|
|
rb_define_global_function("format", rb_f_sprintf, -1); /* in sprintf.c */
|
|
|
|
rb_define_global_function("Integer", rb_f_integer, -1);
|
|
rb_define_global_function("Float", rb_f_float, 1);
|
|
|
|
rb_define_global_function("String", rb_f_string, 1);
|
|
rb_define_global_function("Array", rb_f_array, 1);
|
|
rb_define_global_function("Hash", rb_f_hash, 1);
|
|
|
|
rb_cNilClass = rb_define_class("NilClass", rb_cObject);
|
|
rb_define_method(rb_cNilClass, "to_i", nil_to_i, 0);
|
|
rb_define_method(rb_cNilClass, "to_f", nil_to_f, 0);
|
|
rb_define_method(rb_cNilClass, "to_s", nil_to_s, 0);
|
|
rb_define_method(rb_cNilClass, "to_a", nil_to_a, 0);
|
|
rb_define_method(rb_cNilClass, "to_h", nil_to_h, 0);
|
|
rb_define_method(rb_cNilClass, "inspect", nil_inspect, 0);
|
|
rb_define_method(rb_cNilClass, "&", false_and, 1);
|
|
rb_define_method(rb_cNilClass, "|", false_or, 1);
|
|
rb_define_method(rb_cNilClass, "^", false_xor, 1);
|
|
|
|
rb_define_method(rb_cNilClass, "nil?", rb_true, 0);
|
|
rb_undef_alloc_func(rb_cNilClass);
|
|
rb_undef_method(CLASS_OF(rb_cNilClass), "new");
|
|
/*
|
|
* An alias of +nil+
|
|
*/
|
|
rb_define_global_const("NIL", Qnil);
|
|
|
|
rb_define_method(rb_cModule, "freeze", rb_mod_freeze, 0);
|
|
rb_define_method(rb_cModule, "===", rb_mod_eqq, 1);
|
|
rb_define_method(rb_cModule, "==", rb_obj_equal, 1);
|
|
rb_define_method(rb_cModule, "<=>", rb_mod_cmp, 1);
|
|
rb_define_method(rb_cModule, "<", rb_mod_lt, 1);
|
|
rb_define_method(rb_cModule, "<=", rb_class_inherited_p, 1);
|
|
rb_define_method(rb_cModule, ">", rb_mod_gt, 1);
|
|
rb_define_method(rb_cModule, ">=", rb_mod_ge, 1);
|
|
rb_define_method(rb_cModule, "initialize_copy", rb_mod_init_copy, 1); /* in class.c */
|
|
rb_define_method(rb_cModule, "to_s", rb_mod_to_s, 0);
|
|
rb_define_alias(rb_cModule, "inspect", "to_s");
|
|
rb_define_method(rb_cModule, "included_modules", rb_mod_included_modules, 0); /* in class.c */
|
|
rb_define_method(rb_cModule, "include?", rb_mod_include_p, 1); /* in class.c */
|
|
rb_define_method(rb_cModule, "name", rb_mod_name, 0); /* in variable.c */
|
|
rb_define_method(rb_cModule, "ancestors", rb_mod_ancestors, 0); /* in class.c */
|
|
|
|
rb_define_private_method(rb_cModule, "attr", rb_mod_attr, -1);
|
|
rb_define_private_method(rb_cModule, "attr_reader", rb_mod_attr_reader, -1);
|
|
rb_define_private_method(rb_cModule, "attr_writer", rb_mod_attr_writer, -1);
|
|
rb_define_private_method(rb_cModule, "attr_accessor", rb_mod_attr_accessor, -1);
|
|
|
|
rb_define_alloc_func(rb_cModule, rb_module_s_alloc);
|
|
rb_define_method(rb_cModule, "initialize", rb_mod_initialize, 0);
|
|
rb_define_method(rb_cModule, "initialize_clone", rb_mod_initialize_clone, 1);
|
|
rb_define_method(rb_cModule, "instance_methods", rb_class_instance_methods, -1); /* in class.c */
|
|
rb_define_method(rb_cModule, "public_instance_methods",
|
|
rb_class_public_instance_methods, -1); /* in class.c */
|
|
rb_define_method(rb_cModule, "protected_instance_methods",
|
|
rb_class_protected_instance_methods, -1); /* in class.c */
|
|
rb_define_method(rb_cModule, "private_instance_methods",
|
|
rb_class_private_instance_methods, -1); /* in class.c */
|
|
|
|
rb_define_method(rb_cModule, "constants", rb_mod_constants, -1); /* in variable.c */
|
|
rb_define_method(rb_cModule, "const_get", rb_mod_const_get, -1);
|
|
rb_define_method(rb_cModule, "const_set", rb_mod_const_set, 2);
|
|
rb_define_method(rb_cModule, "const_defined?", rb_mod_const_defined, -1);
|
|
rb_define_private_method(rb_cModule, "remove_const",
|
|
rb_mod_remove_const, 1); /* in variable.c */
|
|
rb_define_method(rb_cModule, "const_missing",
|
|
rb_mod_const_missing, 1); /* in variable.c */
|
|
rb_define_method(rb_cModule, "class_variables",
|
|
rb_mod_class_variables, -1); /* in variable.c */
|
|
rb_define_method(rb_cModule, "remove_class_variable",
|
|
rb_mod_remove_cvar, 1); /* in variable.c */
|
|
rb_define_method(rb_cModule, "class_variable_get", rb_mod_cvar_get, 1);
|
|
rb_define_method(rb_cModule, "class_variable_set", rb_mod_cvar_set, 2);
|
|
rb_define_method(rb_cModule, "class_variable_defined?", rb_mod_cvar_defined, 1);
|
|
rb_define_method(rb_cModule, "public_constant", rb_mod_public_constant, -1); /* in variable.c */
|
|
rb_define_method(rb_cModule, "private_constant", rb_mod_private_constant, -1); /* in variable.c */
|
|
rb_define_method(rb_cModule, "singleton_class?", rb_mod_singleton_p, 0);
|
|
|
|
rb_define_method(rb_cClass, "allocate", rb_obj_alloc, 0);
|
|
rb_define_method(rb_cClass, "new", rb_class_new_instance, -1);
|
|
rb_define_method(rb_cClass, "initialize", rb_class_initialize, -1);
|
|
rb_define_method(rb_cClass, "superclass", rb_class_superclass, 0);
|
|
rb_define_alloc_func(rb_cClass, rb_class_s_alloc);
|
|
rb_undef_method(rb_cClass, "extend_object");
|
|
rb_undef_method(rb_cClass, "append_features");
|
|
rb_undef_method(rb_cClass, "prepend_features");
|
|
|
|
/*
|
|
* Document-class: Data
|
|
*
|
|
* This is a recommended base class for C extensions using Data_Make_Struct
|
|
* or Data_Wrap_Struct, see README.EXT for details.
|
|
*/
|
|
rb_cData = rb_define_class("Data", rb_cObject);
|
|
rb_undef_alloc_func(rb_cData);
|
|
|
|
rb_cTrueClass = rb_define_class("TrueClass", rb_cObject);
|
|
rb_define_method(rb_cTrueClass, "to_s", true_to_s, 0);
|
|
rb_define_alias(rb_cTrueClass, "inspect", "to_s");
|
|
rb_define_method(rb_cTrueClass, "&", true_and, 1);
|
|
rb_define_method(rb_cTrueClass, "|", true_or, 1);
|
|
rb_define_method(rb_cTrueClass, "^", true_xor, 1);
|
|
rb_undef_alloc_func(rb_cTrueClass);
|
|
rb_undef_method(CLASS_OF(rb_cTrueClass), "new");
|
|
/*
|
|
* An alias of +true+
|
|
*/
|
|
rb_define_global_const("TRUE", Qtrue);
|
|
|
|
rb_cFalseClass = rb_define_class("FalseClass", rb_cObject);
|
|
rb_define_method(rb_cFalseClass, "to_s", false_to_s, 0);
|
|
rb_define_alias(rb_cFalseClass, "inspect", "to_s");
|
|
rb_define_method(rb_cFalseClass, "&", false_and, 1);
|
|
rb_define_method(rb_cFalseClass, "|", false_or, 1);
|
|
rb_define_method(rb_cFalseClass, "^", false_xor, 1);
|
|
rb_undef_alloc_func(rb_cFalseClass);
|
|
rb_undef_method(CLASS_OF(rb_cFalseClass), "new");
|
|
/*
|
|
* An alias of +false+
|
|
*/
|
|
rb_define_global_const("FALSE", Qfalse);
|
|
}
|