diff options
Diffstat (limited to 'object.c')
| -rw-r--r-- | object.c | 848 |
1 files changed, 826 insertions, 22 deletions
@@ -33,6 +33,15 @@ VALUE rb_cSymbol; static ID id_eq, id_eql, id_inspect, id_init_copy; +/* + * call-seq: + * obj === other => true or false + * + * Case Equality---For class <code>Object</code>, effectivelt the same + * as calling <code>#==</code>, but typically overridden by descendents + * to provide meaningful semantics in <code>case</code> statements. + */ + VALUE rb_equal(obj1, obj2) VALUE obj1, obj2; @@ -52,6 +61,35 @@ rb_eql(obj1, obj2) return RTEST(rb_funcall(obj1, id_eql, 1, obj2)); } +/* + * call-seq: + * obj == other => true or false + * obj.equal?(other) => true or false + * obj.eql?(other) => true or false + * + * Equality---At the <code>Object</code> level, <code>==</code> returns + * <code>true</code> only if <i>obj</i> and <i>other</i> are the + * same object. Typically, this method is overridden in descendent + * classes to provide class-specific meaning. + * + * Unlike <code>==</code>, the <code>equal?</code> method should never be + * overridden by subclasses: it is used to determine object identity + * (that is, <code>a.equal?(b)</code> iff <code>a</code> is the same + * object as <code>b</code>). + * + * The <code>eql?</code> method returns <code>true</code> if + <i>obj</i> and <i>anObject</i> have the + * same value. Used by <code>Hash</code> to test members for equality. + * For objects of class <code>Object</code>, <code>eql?</code> is + * synonymous with <code>==</code>. Subclasses normally continue this + * tradition, but there are exceptions. <code>Numeric</code> types, for + * example, perform type conversion across <code>==</code>, but not + * across <code>eql?</code>, so: + * + * 1 == 1.0 #=> true + * 1.eql? 1.0 #=> false + */ + static VALUE rb_obj_equal(obj1, obj2) VALUE obj1, obj2; @@ -60,6 +98,36 @@ rb_obj_equal(obj1, obj2) return Qfalse; } + +/* + * Document-method: __id__ + * Document-method: object_id + * + * call-seq: + * obj.__id__ => fixnum + * obj.object_id => fixnum + * + * Returns an integer identifier for <i>obj</i>. The same number will + * be returned on all calls to <code>id</code> for a given object, and + * no two active objects will share an id. + * <code>Object#object_id</code> is a different concept from the + * <code>:name</code> notation, which returns the symbol id of + * <code>name</code>. Replaces the deprecated <code>Object#id</code>. + */ + + + +/* + * call-seq: + * obj.hash => fixnum + * + * Generates a <code>Fixnum</code> hash value for this object. This + * function must have the property that <code>a.eql?(b)</code> implies + * <code>a.hash == b.hash</code>. The hash value is used by class + * <code>Hash</code>. Any hash value that exceeds the capacity of a + * <code>Fixnum</code> will be truncated before being used. + */ + VALUE rb_obj_id(obj) VALUE obj; @@ -70,6 +138,13 @@ rb_obj_id(obj) return (VALUE)((long)obj|FIXNUM_FLAG); } +/* + * call-seq: + * obj.id => fixnum + * + * Soon-to-be deprecated version of <code>Object#object_id</code>. + */ + VALUE rb_obj_id_obsolete(obj) VALUE obj; @@ -88,6 +163,13 @@ rb_class_real(cl) return cl; } +/* + * call-seq: + * obj.type => class + * + * Deprecated synonym for <code>Object#class</code>. + */ + VALUE rb_obj_type(obj) VALUE obj; @@ -96,6 +178,21 @@ rb_obj_type(obj) return rb_class_real(CLASS_OF(obj)); } + +/* + * call-seq: + * obj.class => class + * + * Returns the class of <i>obj</i>, now preferred over + * <code>Object#type</code>, as an object's type in Ruby is only + * loosely tied to that object's class. This method must always be + * called with an explicit receiver, as <code>class</code> is also a + * reserved word in Ruby. + * + * 1.class #=> Fixnum + * self.class #=> Object + */ + VALUE rb_obj_class(obj) VALUE obj; @@ -131,6 +228,26 @@ init_copy(dest, obj) rb_funcall(dest, id_init_copy, 1, obj); } +/* + * call-seq: + * obj.clone -> an_object + * + * Produces a shallow copy of <i>obj</i>---the instance variables of + * <i>obj</i> are copied, but not the objects they reference. Copies + * the frozen and tainted state of <i>obj</i>. See also the discussion + * under <code>Object#dup</code>. + * + * class Klass + * attr_accessor :str + * end + * s1 = Klass.new #=> #<Klass:0x401b3a38> + * s1.str = "Hello" #=> "Hello" + * s2 = s1.clone #=> #<Klass:0x401b3998 @str="Hello"> + * s2.str[1,4] = "i" #=> "i" + * s1.inspect #=> "#<Klass:0x401b3a38 @str=\"Hi\">" + * s2.inspect #=> "#<Klass:0x401b3998 @str=\"Hi\">" + */ + VALUE rb_obj_clone(obj) VALUE obj; @@ -149,6 +266,20 @@ rb_obj_clone(obj) return clone; } +/* + * call-seq: + * obj.dup -> an_object + * + * Produces a shallow copy of <i>obj</i>---the instance variables of + * <i>obj</i> are copied, but not the objects they reference. + * <code>dup</code> copies the tainted state of <i>obj</i>. See also + * the discussion under <code>Object#clone</code>. In general, + * <code>clone</code> and <code>dup</code> may have different semantics + * in descendent classes. While <code>clone</code> is used to duplicate + * an object, including its internal state, <code>dup</code> typically + * uses the class of the descendent object to create the new instance. + */ + VALUE rb_obj_dup(obj) VALUE obj; @@ -176,6 +307,21 @@ rb_obj_init_copy(obj, orig) return obj; } +/* + * call-seq: + * obj.to_a -> anArray + * + * Returns an array representation of <i>obj</i>. For objects of class + * <code>Object</code> and others that don't explicitly override the + * method, the return value is an array containing <code>self</code>. + * However, this latter behavior will soon be obsolete. + * + * self.to_a #=> -:1: warning: default `to_a' will be obsolete + * "hello".to_a #=> ["hello"] + * Time.new.to_a #=> [39, 54, 8, 9, 4, 2003, 3, 99, true, "CDT"] + */ + + static VALUE rb_any_to_a(obj) VALUE obj; @@ -184,6 +330,17 @@ rb_any_to_a(obj) return rb_ary_new3(1, obj); } + +/* + * call-seq: + * obj.to_s => string + * + * Returns a string representing <i>obj</i>. The default + * <code>to_s</code> prints the object's class and an encoding of the + * object id. As a special case, the top-level object that is the + * initial execution context of Ruby programs returns ``main.'' + */ + VALUE rb_any_to_s(obj) VALUE obj; @@ -247,6 +404,19 @@ inspect_obj(obj, str) return str; } +/* + * call-seq: + * obj.inspect => string + * + * Returns a string containing a human-readable representation of + * <i>obj</i>. If not overridden, uses the <code>to_s</code> method to + * generate the string. + * + * [ 1, 2, 3..4, 'five' ].inspect #=> "[1, 2, 3..4, \"five\"]" + * Time.new.inspect #=> "Wed Apr 09 08:54:39 CDT 2003" + */ + + static VALUE rb_obj_inspect(obj) VALUE obj; @@ -272,6 +442,15 @@ rb_obj_inspect(obj) return rb_funcall(obj, rb_intern("to_s"), 0, 0); } + +/* + * 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>. + */ + VALUE rb_obj_is_instance_of(obj, c) VALUE obj, c; @@ -289,6 +468,33 @@ rb_obj_is_instance_of(obj, c) 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.instance_of? A #=> false + * b.instance_of? B #=> true + * b.instance_of? C #=> false + * b.instance_of? M #=> false + * 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(obj, c) VALUE obj, c; @@ -313,12 +519,101 @@ rb_obj_is_kind_of(obj, c) return Qfalse; } + +/* + * 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 + */ + + + static VALUE rb_obj_dummy() { return Qnil; } + +/* + * call-seq: + * obj.tainted? => true or false + * + * Returns <code>true</code> if the object is tainted. + */ + VALUE rb_obj_tainted(obj) VALUE obj; @@ -328,6 +623,15 @@ rb_obj_tainted(obj) return Qfalse; } +/* + * call-seq: + * obj.taint -> obj + * + * Marks <i>obj</i> as tainted---if the <code>$SAFE</code> level is + * set appropriately, many method calls which might alter the running + * programs environment will refuse to accept tainted strings. + */ + VALUE rb_obj_taint(obj) VALUE obj; @@ -342,6 +646,14 @@ rb_obj_taint(obj) return obj; } + +/* + * call-seq: + * obj.untaint => obj + * + * Removes the taint from <i>obj</i>. + */ + VALUE rb_obj_untaint(obj) VALUE obj; @@ -363,6 +675,26 @@ rb_obj_infect(obj1, obj2) OBJ_INFECT(obj1, obj2); } + +/* + * call-seq: + * obj.freeze => obj + * + * Prevents further modifications to <i>obj</i>. A + * <code>TypeError</code> will be raised if modification is attempted. + * There is no way to unfreeze a frozen object. See also + * <code>Object#frozen?</code>. + * + * a = [ "a", "b", "c" ] + * a.freeze + * a << "z" + * + * <em>produces:</em> + * + * prog.rb:3:in `<<': can't modify frozen array (TypeError) + * from prog.rb:3 + */ + VALUE rb_obj_freeze(obj) VALUE obj; @@ -376,6 +708,17 @@ rb_obj_freeze(obj) 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 + */ + static VALUE rb_obj_frozen_p(obj) VALUE obj; @@ -384,6 +727,23 @@ rb_obj_frozen_p(obj) return Qfalse; } + +/* + * Document-class: NillClass + * + * 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(obj) VALUE obj; @@ -391,6 +751,15 @@ nil_to_i(obj) return INT2FIX(0); } +/* + * call-seq: + * nil.to_f => 0.0 + * + * Always returns zero. + * + * nil.to_f #=> 0.0 + */ + static VALUE nil_to_f(obj) VALUE obj; @@ -398,6 +767,15 @@ nil_to_f(obj) return rb_float_new(0.0); } +/* + * call-seq: + * nil.to_s => "" + * + * Always returns the empty string. + * + * nil.to_s #=> "" + */ + static VALUE nil_to_s(obj) VALUE obj; @@ -405,6 +783,15 @@ nil_to_s(obj) return rb_str_new2(""); } +/* + * call-seq: + * nil.to_a => [] + * + * Always returns an empty array. + * + * nil.to_a #=> [] + */ + static VALUE nil_to_a(obj) VALUE obj; @@ -412,6 +799,13 @@ nil_to_a(obj) return rb_ary_new2(0); } +/* + * call-seq: + * nil.to_s => "nil" + * + * Always returns the string "nil". + */ + static VALUE nil_inspect(obj) VALUE obj; @@ -557,6 +951,7 @@ false_to_s(obj) /* * 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 @@ -574,6 +969,7 @@ false_and(obj, obj2) /* * 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. @@ -591,6 +987,7 @@ false_or(obj, obj2) /* * 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 @@ -605,6 +1002,13 @@ false_xor(obj, 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(obj) VALUE obj; @@ -612,6 +1016,15 @@ rb_true(obj) return Qtrue; } +/* + * call_seq: + * nil.nil? => true + * <anything_else>.nil? => false + * + * Only the object <i>nil</i> responds <code>true</code> to <code>nil?</code>. + */ + + static VALUE rb_false(obj) VALUE obj; @@ -620,6 +1033,22 @@ rb_false(obj) } +/* + * call-seq: + * obj =~ other => false + * + * Pattern Match---Overridden by descendents (notably + * <code>Regexp</code> and <code>String</code>) to provide meaningful + * pattern-match semantics. + */ + +static VALUE +rb_obj_pattern_match(obj) + VALUE obj; +{ + return Qfalse; +} + /********************************************************************** * Document-class: Symbol * @@ -739,6 +1168,35 @@ sym_to_sym(sym) return sym; } + +/*********************************************************************** + * + * 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>syml</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 #=> ["E", "PI", "CONST"] + * Mod.instance_methods #=> ["meth"] + * + */ + static VALUE rb_mod_to_s(klass) VALUE klass; @@ -764,6 +1222,16 @@ rb_mod_to_s(klass) return rb_str_dup(rb_class_path(klass)); } +/* + * call-seq: + * mod === obj => true or false + * + * Case Equality---Returns <code>true</code> if <i>anObject</i> is an + * instance of <i>mod</i> or one of <i>mod</i>'s descendents. Of + * limited use for modules, but can be used in <code>case</code> + * statements to classify objects by class. + */ + static VALUE rb_mod_eqq(mod, arg) VALUE mod, arg; @@ -771,6 +1239,18 @@ rb_mod_eqq(mod, 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"). + * + */ + static VALUE rb_mod_le(mod, arg) VALUE mod, arg; @@ -800,6 +1280,17 @@ rb_mod_le(mod, arg) 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(mod, arg) VALUE mod, arg; @@ -808,6 +1299,19 @@ rb_mod_lt(mod, arg) return rb_mod_le(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(mod, arg) VALUE mod, arg; @@ -823,6 +1327,17 @@ rb_mod_ge(mod, arg) return rb_mod_le(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(mod, arg) VALUE mod, arg; @@ -831,6 +1346,17 @@ rb_mod_gt(mod, arg) return rb_mod_ge(mod, arg); } +/* + * call-seq: + * mod <=> other_mod => -1, 0, +1, or nil + * + * Comparison---Returns -1 if <i>mod</i> includes <i>other_mod</i>, 0 if + * <i>mod</i> is the same as <i>other_mod</i>, and +1 if <i>mod</i> is + * included by <i>other_mod</i> or if <i>mod</i> has no relationship with + * <i>other_mod</i>. Returns <code>nil</code> if <i>other_mod</i> is + * not a module. + */ + static VALUE rb_mod_cmp(mod, arg) VALUE mod, arg; @@ -873,6 +1399,29 @@ rb_class_s_alloc(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" + */ + static VALUE rb_mod_initialize(module) VALUE module; @@ -1052,6 +1601,32 @@ rb_to_id(name) return id; } +/* + * call-seq: + * attr(symbol, writable=false) => 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. + * If the optional <i>writable</i> argument is <code>true</code>, also + * creates a method called <code>name=</code> to set the attribute. + * + * module Mod + * attr :size, true + * end + * + * <em>is equivalent to:</em> + * + * module Mod + * def size + * @size + * end + * def size=(val) + * @size = val + * end + * end + */ + static VALUE rb_mod_attr(argc, argv, klass) int argc; @@ -1065,6 +1640,15 @@ rb_mod_attr(argc, argv, klass) return Qnil; } +/* + * call-seq: + * attr_reader(symbol, ...) => 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. + */ + static VALUE rb_mod_attr_reader(argc, argv, klass) int argc; @@ -1079,6 +1663,14 @@ rb_mod_attr_reader(argc, argv, klass) return Qnil; } +/* + * call-seq: + * attr_writer(symbol, ...) => nil + * + * Creates an accessor method to allow assignment to the attribute + * <i>aSymbol</i><code>.id2name</code>. + */ + static VALUE rb_mod_attr_writer(argc, argv, klass) int argc; @@ -1093,6 +1685,19 @@ rb_mod_attr_writer(argc, argv, klass) return Qnil; } +/* + * call-seq: + * attr_accessor(symbol, ...) => nil + * + * Equivalent to calling ``<code>attr</code><i>symbol</i><code>, + * true</code>'' on each <i>symbol</i> in turn. + * + * module Mod + * attr_accessor(:one, :two) + * end + * Mod.instance_methods.sort #=> ["one", "one=", "two", "two="] + */ + static VALUE rb_mod_attr_accessor(argc, argv, klass) int argc; @@ -1107,6 +1712,15 @@ rb_mod_attr_accessor(argc, argv, klass) return Qnil; } +/* + * call-seq: + * mod.const_get(sym) => obj + * + * Returns the value of the named constant in <i>mod</i>. + * + * Math.const_get(:PI) #=> 3.14159265358979 + */ + static VALUE rb_mod_const_get(mod, name) VALUE mod, name; @@ -1119,6 +1733,18 @@ rb_mod_const_get(mod, name) return rb_const_get(mod, id); } +/* + * call-seq: + * mod.const_set(sym, 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 + */ + static VALUE rb_mod_const_set(mod, name, value) VALUE mod, name, value; @@ -1132,6 +1758,16 @@ rb_mod_const_set(mod, name, value) return value; } +/* + * call-seq: + * mod.const_defined?(sym) => true or false + * + * Returns <code>true</code> if a constant with the given name is + * defined by <i>mod</i>. + * + * Math.const_defined? "PI" #=> true + */ + static VALUE rb_mod_const_defined(mod, name) VALUE mod, name; @@ -1144,6 +1780,26 @@ rb_mod_const_defined(mod, name) return rb_const_defined_at(mod, id); } +/* + * call-seq: + * obj.methods => array + * + * Returns a list of the names of methods publicly accessible in + * <i>obj</i>. This will include all the methods accessible in + * <i>obj</i>'s ancestors. + * + * class Klass + * def kMethod() + * end + * end + * k = Klass.new + * k.methods[0..9] #=> ["kMethod", "freeze", "nil?", "is_a?", + * "class", "instance_variable_set", + * "methods", "extend", "__send__", "instance_eval"] + * k.methods.length #=> 42 + */ + + static VALUE rb_obj_methods(argc, argv, obj) int argc; @@ -1169,6 +1825,15 @@ rb_obj_methods(argc, argv, obj) } } +/* + * call-seq: + * obj.protected_methods(all=true) => array + * + * Returns the list of protected methods accessible to <i>obj</i>. If + * the <i>all</i> parameter is set to <code>false</code>, only those methods + * in the receiver will be listed. + */ + static VALUE rb_obj_protected_methods(argc, argv, obj) int argc; @@ -1184,6 +1849,15 @@ rb_obj_protected_methods(argc, argv, obj) return rb_class_protected_instance_methods(argc, argv, CLASS_OF(obj)); } +/* + * call-seq: + * obj.private_methods(all=true) => array + * + * Returns the list of private methods accessible to <i>obj</i>. If + * the <i>all</i> parameter is set to <code>false</code>, only those methods + * in the receiver will be listed. + */ + static VALUE rb_obj_private_methods(argc, argv, obj) int argc; @@ -1199,6 +1873,15 @@ rb_obj_private_methods(argc, argv, obj) return rb_class_private_instance_methods(argc, argv, CLASS_OF(obj)); } +/* + * call-seq: + * obj.public_methods(all=true) => array + * + * Returns the list of public methods accessible to <i>obj</i>. If + * the <i>all</i> parameter is set to <code>false</code>, only those methods + * in the receiver will be listed. + */ + static VALUE rb_obj_public_methods(argc, argv, obj) int argc; @@ -1214,6 +1897,24 @@ rb_obj_public_methods(argc, argv, obj) return rb_class_public_instance_methods(argc, argv, CLASS_OF(obj)); } +/* + * call-seq: + * obj.instance_variable_get(symbol) => obj + * + * Returns the value of the given instance variable (or throws a + * <code>NameError</code> exception). The <code>@</code> part of the + * variable name should be included for regular instance variables + * + * 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(obj, iv) VALUE obj, iv; @@ -1226,6 +1927,25 @@ rb_obj_ivar_get(obj, iv) return rb_ivar_get(obj, id); } + +/* + * call-seq: + * obj.instance_variable_set(symbol, obj) => obj + * + * Sets the instance variable names by <i>symbol</i> to + * <i>object</i>, thereby frustrating the efforts of the class's + * author to attempt to provide proper encapsulation. + * + * 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.inspect #=> "#<Fred:0x401b3da8 @a=\"dog\", @b=99>" + */ + static VALUE rb_obj_ivar_set(obj, iv, val) VALUE obj, iv, val; @@ -1348,6 +2068,23 @@ rb_Integer(val) return rb_to_integer(val, "to_i"); } +/* + * call-seq: + * Integer(arg) => 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). If <i>arg</i> is a <code>String</code>, leading + * radix indicators (<code>0</code>, <code>0b</code>, and + * <code>0x</code>) are honored. Others are converted using + * <code>to_int</code> and <code>to_i</code>. This behavior is + * different from that of <code>String#to_i</code>. + * + * Integer(123.999) #=> 123 + * Integer("0x1a") #=> 26 + * Integer(Time.new) #=> 1049896590 + */ + static VALUE rb_f_integer(obj, arg) VALUE obj, arg; @@ -1482,6 +2219,18 @@ rb_Float(val) } } +/* + * 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. As of Ruby + * 1.8, converting <code>nil</code> generates a <code>TypeError</code>. + * + * Float(1) #=> 1.0 + * Float("123.456") #=> 123.456 + */ + static VALUE rb_f_float(obj, arg) VALUE obj, arg; @@ -1532,6 +2281,19 @@ rb_String(val) return rb_convert_type(val, T_STRING, "String", "to_s"); } + +/* + * call-seq: + * String(arg) => string + * + * Converts <i>arg</i> to a <code>String</code> by calling its + * <code>to_s</code> method. + * + * String(self) #=> "main" + * String(self.class #=> "Object" + * String(123456) #=> "123456" + */ + static VALUE rb_f_string(obj, arg) VALUE obj, arg; @@ -1564,6 +2326,18 @@ rb_Array(val) } #endif +/* + * call-seq: + * Array(arg) => array + * + * Returns <i>arg</i> as an <code>Array</code>. First tries to call + * <i>arg</i><code>.to_ary</code>, then <i>arg</i><code>.to_a</code>. + * If both fail, creates a single element array containing <i>arg</i> + * (unless <i>arg</i> is <code>nil</code>). + * + * Array(1..5) #=> [1, 2, 3, 4, 5] + */ + static VALUE rb_f_array(obj, arg) VALUE obj, arg; @@ -1647,6 +2421,23 @@ VALUE ruby_top_self; * */ + +/* + * <code>Object</code> is the parent class of all classes in Ruby. Its + * methods are therefore available to all objects unless explicitly + * overridden. + * + * <code>Object</code> mixes in the <code>Kernel</code> module, making + * the built-in kernel functions globally accessible. Although the + * instance methods of <code>Object</code> are defined by the + * <code>Kernel</code> module, we have chosen to document them here for + * clarity. + * + * In the descriptions of Object's methods, the parameter <i>symbol</i> refers + * to a symbol, which is either a quoted string or a + * <code>Symbol</code> (such as <code>:name</code>). + */ + void Init_Object() { @@ -1676,7 +2467,7 @@ Init_Object() rb_define_method(rb_mKernel, "==", rb_obj_equal, 1); rb_define_method(rb_mKernel, "equal?", rb_obj_equal, 1); rb_define_method(rb_mKernel, "===", rb_equal, 1); - rb_define_method(rb_mKernel, "=~", rb_false, 1); + rb_define_method(rb_mKernel, "=~", rb_obj_pattern_match, 1); rb_define_method(rb_mKernel, "eql?", rb_obj_equal, 1); @@ -1701,15 +2492,18 @@ Init_Object() 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); - rb_define_method(rb_mKernel, "singleton_methods", rb_obj_singleton_methods, -1); - rb_define_method(rb_mKernel, "protected_methods", rb_obj_protected_methods, -1); + 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); rb_define_method(rb_mKernel, "private_methods", rb_obj_private_methods, -1); rb_define_method(rb_mKernel, "public_methods", rb_obj_public_methods, -1); - rb_define_method(rb_mKernel, "instance_variables", rb_obj_instance_variables, 0); + 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_private_method(rb_mKernel, "remove_instance_variable", - rb_obj_remove_instance_variable, 1); + 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); @@ -1719,8 +2513,8 @@ Init_Object() rb_define_private_method(rb_mKernel, "singleton_method_removed", rb_obj_dummy, 1); rb_define_private_method(rb_mKernel, "singleton_method_undefined", rb_obj_dummy, 1); - rb_define_global_function("sprintf", rb_f_sprintf, -1); - rb_define_global_function("format", rb_f_sprintf, -1); + 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); @@ -1744,7 +2538,8 @@ Init_Object() rb_define_global_const("NIL", Qnil); rb_cSymbol = rb_define_class("Symbol", rb_cObject); - rb_define_singleton_method(rb_cSymbol, "all_symbols", rb_sym_all_symbols, 0); + rb_define_singleton_method(rb_cSymbol, "all_symbols", + rb_sym_all_symbols, 0); // in parse.y rb_undef_alloc_func(rb_cSymbol); rb_undef_method(CLASS_OF(rb_cSymbol), "new"); @@ -1764,10 +2559,11 @@ Init_Object() rb_define_method(rb_cModule, ">=", rb_mod_ge, 1); rb_define_method(rb_cModule, "initialize_copy", rb_mod_init_copy, 1); rb_define_method(rb_cModule, "to_s", rb_mod_to_s, 0); - rb_define_method(rb_cModule, "included_modules", rb_mod_included_modules, 0); - rb_define_method(rb_cModule, "include?", rb_mod_include_p, 1); - rb_define_method(rb_cModule, "name", rb_mod_name, 0); - rb_define_method(rb_cModule, "ancestors", rb_mod_ancestors, 0); + 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); @@ -1776,19 +2572,27 @@ Init_Object() 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, "instance_methods", rb_class_instance_methods, -1); - rb_define_method(rb_cModule, "public_instance_methods", rb_class_public_instance_methods, -1); - rb_define_method(rb_cModule, "protected_instance_methods", rb_class_protected_instance_methods, -1); - rb_define_method(rb_cModule, "private_instance_methods", rb_class_private_instance_methods, -1); - - rb_define_method(rb_cModule, "constants", rb_mod_constants, 0); + 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, 0); // 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); - rb_define_method(rb_cModule, "const_missing", rb_mod_const_missing, 1); - rb_define_method(rb_cModule, "class_variables", rb_mod_class_variables, 0); - rb_define_private_method(rb_cModule, "remove_class_variable", rb_mod_remove_cvar, 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, 0); // in variable.c + rb_define_private_method(rb_cModule, "remove_class_variable", + rb_mod_remove_cvar, 1); // in variable.c rb_define_method(rb_cClass, "allocate", rb_obj_alloc, 0); rb_define_method(rb_cClass, "new", rb_class_new_instance, -1); |