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-rw-r--r--trunk/struct.c904
1 files changed, 0 insertions, 904 deletions
diff --git a/trunk/struct.c b/trunk/struct.c
deleted file mode 100644
index add6bfa03d..0000000000
--- a/trunk/struct.c
+++ /dev/null
@@ -1,904 +0,0 @@
-/**********************************************************************
-
- struct.c -
-
- $Author$
- created at: Tue Mar 22 18:44:30 JST 1995
-
- Copyright (C) 1993-2007 Yukihiro Matsumoto
-
-**********************************************************************/
-
-#include "ruby/ruby.h"
-
-VALUE rb_cStruct;
-
-static VALUE struct_alloc(VALUE);
-
-VALUE
-rb_struct_iv_get(VALUE c, const char *name)
-{
- ID id;
-
- id = rb_intern(name);
- for (;;) {
- if (rb_ivar_defined(c, id))
- return rb_ivar_get(c, id);
- c = RCLASS_SUPER(c);
- if (c == 0 || c == rb_cStruct)
- return Qnil;
- }
-}
-
-VALUE
-rb_struct_s_members(VALUE klass)
-{
- VALUE members = rb_struct_iv_get(klass, "__members__");
-
- if (NIL_P(members)) {
- rb_raise(rb_eTypeError, "uninitialized struct");
- }
- if (TYPE(members) != T_ARRAY) {
- rb_raise(rb_eTypeError, "corrupted struct");
- }
- return members;
-}
-
-VALUE
-rb_struct_members(VALUE s)
-{
- VALUE members = rb_struct_s_members(rb_obj_class(s));
-
- if (RSTRUCT_LEN(s) != RARRAY_LEN(members)) {
- rb_raise(rb_eTypeError, "struct size differs (%ld required %ld given)",
- RARRAY_LEN(members), RSTRUCT_LEN(s));
- }
- return members;
-}
-
-static VALUE
-rb_struct_s_members_m(VALUE klass)
-{
- VALUE members, ary;
- VALUE *p, *pend;
-
- members = rb_struct_s_members(klass);
- ary = rb_ary_new2(RARRAY_LEN(members));
- p = RARRAY_PTR(members); pend = p + RARRAY_LEN(members);
- while (p < pend) {
- rb_ary_push(ary, *p);
- p++;
- }
-
- return ary;
-}
-
-/*
- * call-seq:
- * struct.members => array
- *
- * Returns an array of strings representing the names of the instance
- * variables.
- *
- * Customer = Struct.new(:name, :address, :zip)
- * joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345)
- * joe.members #=> [:name, :address, :zip]
- */
-
-static VALUE
-rb_struct_members_m(VALUE obj)
-{
- return rb_struct_s_members_m(rb_obj_class(obj));
-}
-
-VALUE
-rb_struct_getmember(VALUE obj, ID id)
-{
- VALUE members, slot;
- long i;
-
- members = rb_struct_members(obj);
- slot = ID2SYM(id);
- for (i=0; i<RARRAY_LEN(members); i++) {
- if (RARRAY_PTR(members)[i] == slot) {
- return RSTRUCT_PTR(obj)[i];
- }
- }
- rb_name_error(id, "%s is not struct member", rb_id2name(id));
- return Qnil; /* not reached */
-}
-
-static VALUE
-rb_struct_ref(VALUE obj)
-{
- return rb_struct_getmember(obj, rb_frame_this_func());
-}
-
-static VALUE rb_struct_ref0(VALUE obj) {return RSTRUCT_PTR(obj)[0];}
-static VALUE rb_struct_ref1(VALUE obj) {return RSTRUCT_PTR(obj)[1];}
-static VALUE rb_struct_ref2(VALUE obj) {return RSTRUCT_PTR(obj)[2];}
-static VALUE rb_struct_ref3(VALUE obj) {return RSTRUCT_PTR(obj)[3];}
-static VALUE rb_struct_ref4(VALUE obj) {return RSTRUCT_PTR(obj)[4];}
-static VALUE rb_struct_ref5(VALUE obj) {return RSTRUCT_PTR(obj)[5];}
-static VALUE rb_struct_ref6(VALUE obj) {return RSTRUCT_PTR(obj)[6];}
-static VALUE rb_struct_ref7(VALUE obj) {return RSTRUCT_PTR(obj)[7];}
-static VALUE rb_struct_ref8(VALUE obj) {return RSTRUCT_PTR(obj)[8];}
-static VALUE rb_struct_ref9(VALUE obj) {return RSTRUCT_PTR(obj)[9];}
-
-#define N_REF_FUNC (sizeof(ref_func) / sizeof(ref_func[0]))
-
-static VALUE (*const ref_func[])(VALUE) = {
- rb_struct_ref0,
- rb_struct_ref1,
- rb_struct_ref2,
- rb_struct_ref3,
- rb_struct_ref4,
- rb_struct_ref5,
- rb_struct_ref6,
- rb_struct_ref7,
- rb_struct_ref8,
- rb_struct_ref9,
-};
-
-static void
-rb_struct_modify(VALUE s)
-{
- if (OBJ_FROZEN(s)) rb_error_frozen("Struct");
- if (!OBJ_UNTRUSTED(s) && rb_safe_level() >= 4)
- rb_raise(rb_eSecurityError, "Insecure: can't modify Struct");
-}
-
-static VALUE
-rb_struct_set(VALUE obj, VALUE val)
-{
- VALUE members, slot;
- long i;
-
- members = rb_struct_members(obj);
- rb_struct_modify(obj);
- for (i=0; i<RARRAY_LEN(members); i++) {
- slot = RARRAY_PTR(members)[i];
- if (rb_id_attrset(SYM2ID(slot)) == rb_frame_this_func()) {
- return RSTRUCT_PTR(obj)[i] = val;
- }
- }
- rb_name_error(rb_frame_this_func(), "`%s' is not a struct member",
- rb_id2name(rb_frame_this_func()));
- return Qnil; /* not reached */
-}
-
-static VALUE
-make_struct(VALUE name, VALUE members, VALUE klass)
-{
- VALUE nstr;
- ID id;
- long i;
-
- OBJ_FREEZE(members);
- if (NIL_P(name)) {
- nstr = rb_class_new(klass);
- rb_make_metaclass(nstr, RBASIC(klass)->klass);
- rb_class_inherited(klass, nstr);
- }
- else {
- /* old style: should we warn? */
- name = rb_str_to_str(name);
- id = rb_to_id(name);
- if (!rb_is_const_id(id)) {
- rb_name_error(id, "identifier %s needs to be constant", StringValuePtr(name));
- }
- if (rb_const_defined_at(klass, id)) {
- rb_warn("redefining constant Struct::%s", StringValuePtr(name));
- rb_mod_remove_const(klass, ID2SYM(id));
- }
- nstr = rb_define_class_under(klass, rb_id2name(id), klass);
- }
- rb_iv_set(nstr, "__members__", members);
-
- rb_define_alloc_func(nstr, struct_alloc);
- rb_define_singleton_method(nstr, "new", rb_class_new_instance, -1);
- rb_define_singleton_method(nstr, "[]", rb_class_new_instance, -1);
- rb_define_singleton_method(nstr, "members", rb_struct_s_members_m, 0);
- for (i=0; i< RARRAY_LEN(members); i++) {
- ID id = SYM2ID(RARRAY_PTR(members)[i]);
- if (rb_is_local_id(id) || rb_is_const_id(id)) {
- if (i < N_REF_FUNC) {
- rb_define_method_id(nstr, id, ref_func[i], 0);
- }
- else {
- rb_define_method_id(nstr, id, rb_struct_ref, 0);
- }
- rb_define_method_id(nstr, rb_id_attrset(id), rb_struct_set, 1);
- }
- }
-
- return nstr;
-}
-
-VALUE
-rb_struct_alloc_noinit(VALUE klass)
-{
- return struct_alloc(klass);
-}
-
-VALUE
-rb_struct_define_without_accessor(const char *class_name, VALUE super, rb_alloc_func_t alloc, ...)
-{
- VALUE klass;
- va_list ar;
- VALUE members;
- long i;
- char *name;
-
- members = rb_ary_new2(0);
- va_start(ar, alloc);
- i = 0;
- while ((name = va_arg(ar, char*)) != NULL) {
- rb_ary_push(members, ID2SYM(rb_intern(name)));
- }
- va_end(ar);
- OBJ_FREEZE(members);
-
- if (class_name) {
- klass = rb_define_class(class_name, super);
- }
- else {
- klass = rb_class_new(super);
- rb_make_metaclass(klass, RBASIC(super)->klass);
- rb_class_inherited(super, klass);
- }
-
- rb_iv_set(klass, "__members__", members);
-
- if (alloc)
- rb_define_alloc_func(klass, alloc);
- else
- rb_define_alloc_func(klass, struct_alloc);
-
- return klass;
-}
-
-VALUE
-rb_struct_define(const char *name, ...)
-{
- va_list ar;
- VALUE nm, ary;
- char *mem;
-
- if (!name) nm = Qnil;
- else nm = rb_str_new2(name);
- ary = rb_ary_new();
-
- va_start(ar, name);
- while ((mem = va_arg(ar, char*)) != 0) {
- ID slot = rb_intern(mem);
- rb_ary_push(ary, ID2SYM(slot));
- }
- va_end(ar);
-
- return make_struct(nm, ary, rb_cStruct);
-}
-
-/*
- * call-seq:
- * Struct.new( [aString] [, aSym]+> ) => StructClass
- * StructClass.new(arg, ...) => obj
- * StructClass[arg, ...] => obj
- *
- * Creates a new class, named by <i>aString</i>, containing accessor
- * methods for the given symbols. If the name <i>aString</i> is
- * omitted, an anonymous structure class will be created. Otherwise,
- * the name of this struct will appear as a constant in class
- * <code>Struct</code>, so it must be unique for all
- * <code>Struct</code>s in the system and should start with a capital
- * letter. Assigning a structure class to a constant effectively gives
- * the class the name of the constant.
- *
- * <code>Struct::new</code> returns a new <code>Class</code> object,
- * which can then be used to create specific instances of the new
- * structure. The number of actual parameters must be
- * less than or equal to the number of attributes defined for this
- * class; unset parameters default to \nil{}. Passing too many
- * parameters will raise an \E{ArgumentError}.
- *
- * The remaining methods listed in this section (class and instance)
- * are defined for this generated class.
- *
- * # Create a structure with a name in Struct
- * Struct.new("Customer", :name, :address) #=> Struct::Customer
- * Struct::Customer.new("Dave", "123 Main") #=> #<struct Struct::Customer name="Dave", address="123 Main">
- *
- * # Create a structure named by its constant
- * Customer = Struct.new(:name, :address) #=> Customer
- * Customer.new("Dave", "123 Main") #=> #<struct Customer name="Dave", address="123 Main">
- */
-
-static VALUE
-rb_struct_s_def(int argc, VALUE *argv, VALUE klass)
-{
- VALUE name, rest;
- long i;
- VALUE st;
- ID id;
-
- rb_scan_args(argc, argv, "1*", &name, &rest);
- if (!NIL_P(name) && SYMBOL_P(name)) {
- rb_ary_unshift(rest, name);
- name = Qnil;
- }
- for (i=0; i<RARRAY_LEN(rest); i++) {
- id = rb_to_id(RARRAY_PTR(rest)[i]);
- RARRAY_PTR(rest)[i] = ID2SYM(id);
- }
- st = make_struct(name, rest, klass);
- if (rb_block_given_p()) {
- rb_mod_module_eval(0, 0, st);
- }
-
- return st;
-}
-
-static size_t
-num_members(VALUE klass)
-{
- VALUE members;
- members = rb_struct_iv_get(klass, "__members__");
- if (TYPE(members) != T_ARRAY) {
- rb_raise(rb_eTypeError, "broken members");
- }
- return RARRAY_LEN(members);
-}
-
-/*
- */
-
-VALUE
-rb_struct_initialize(VALUE self, VALUE values)
-{
- VALUE klass = rb_obj_class(self);
- long n;
-
- rb_struct_modify(self);
- n = num_members(klass);
- if (n < RARRAY_LEN(values)) {
- rb_raise(rb_eArgError, "struct size differs");
- }
- MEMCPY(RSTRUCT_PTR(self), RARRAY_PTR(values), VALUE, RARRAY_LEN(values));
- if (n > RARRAY_LEN(values)) {
- rb_mem_clear(RSTRUCT_PTR(self)+RARRAY_LEN(values),
- n-RARRAY_LEN(values));
- }
- return Qnil;
-}
-
-static VALUE
-struct_alloc(VALUE klass)
-{
- long n;
- NEWOBJ(st, struct RStruct);
- OBJSETUP(st, klass, T_STRUCT);
-
- n = num_members(klass);
-
- if (0 < n && n <= RSTRUCT_EMBED_LEN_MAX) {
- RBASIC(st)->flags &= ~RSTRUCT_EMBED_LEN_MASK;
- RBASIC(st)->flags |= n << RSTRUCT_EMBED_LEN_SHIFT;
- rb_mem_clear(st->as.ary, n);
- }
- else {
- st->as.heap.ptr = ALLOC_N(VALUE, n);
- rb_mem_clear(st->as.heap.ptr, n);
- st->as.heap.len = n;
- }
-
- return (VALUE)st;
-}
-
-VALUE
-rb_struct_alloc(VALUE klass, VALUE values)
-{
- return rb_class_new_instance(RARRAY_LEN(values), RARRAY_PTR(values), klass);
-}
-
-VALUE
-rb_struct_new(VALUE klass, ...)
-{
- VALUE *mem;
- long size, i;
- va_list args;
-
- size = num_members(klass);
- mem = ALLOCA_N(VALUE, size);
- va_start(args, klass);
- for (i=0; i<size; i++) {
- mem[i] = va_arg(args, VALUE);
- }
- va_end(args);
-
- return rb_class_new_instance(size, mem, klass);
-}
-
-/*
- * call-seq:
- * struct.each {|obj| block } => struct
- *
- * Calls <i>block</i> once for each instance variable, passing the
- * value as a parameter.
- *
- * Customer = Struct.new(:name, :address, :zip)
- * joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345)
- * joe.each {|x| puts(x) }
- *
- * <em>produces:</em>
- *
- * Joe Smith
- * 123 Maple, Anytown NC
- * 12345
- */
-
-static VALUE
-rb_struct_each(VALUE s)
-{
- long i;
-
- RETURN_ENUMERATOR(s, 0, 0);
- for (i=0; i<RSTRUCT_LEN(s); i++) {
- rb_yield(RSTRUCT_PTR(s)[i]);
- }
- return s;
-}
-
-/*
- * call-seq:
- * struct.each_pair {|sym, obj| block } => struct
- *
- * Calls <i>block</i> once for each instance variable, passing the name
- * (as a symbol) and the value as parameters.
- *
- * Customer = Struct.new(:name, :address, :zip)
- * joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345)
- * joe.each_pair {|name, value| puts("#{name} => #{value}") }
- *
- * <em>produces:</em>
- *
- * name => Joe Smith
- * address => 123 Maple, Anytown NC
- * zip => 12345
- */
-
-static VALUE
-rb_struct_each_pair(VALUE s)
-{
- VALUE members;
- long i;
-
- RETURN_ENUMERATOR(s, 0, 0);
- members = rb_struct_members(s);
- for (i=0; i<RSTRUCT_LEN(s); i++) {
- rb_yield_values(2, rb_ary_entry(members, i), RSTRUCT_PTR(s)[i]);
- }
- return s;
-}
-
-static VALUE
-inspect_struct(VALUE s, VALUE dummy, int recur)
-{
- const char *cname = rb_class2name(rb_obj_class(s));
- VALUE str, members;
- long i;
-
- if (recur) {
- return rb_sprintf("#<struct %s:...>", cname);
- }
-
- members = rb_struct_members(s);
- if (cname[0] == '#') {
- str = rb_str_new2("#<struct ");
- }
- else {
- str = rb_sprintf("#<struct %s ", cname);
- }
- for (i=0; i<RSTRUCT_LEN(s); i++) {
- VALUE slot;
- ID id;
-
- if (i > 0) {
- rb_str_cat2(str, ", ");
- }
- slot = RARRAY_PTR(members)[i];
- id = SYM2ID(slot);
- if (rb_is_local_id(id) || rb_is_const_id(id)) {
- rb_str_append(str, rb_id2str(id));
- }
- else {
- rb_str_append(str, rb_inspect(slot));
- }
- rb_str_cat2(str, "=");
- rb_str_append(str, rb_inspect(RSTRUCT_PTR(s)[i]));
- }
- rb_str_cat2(str, ">");
- OBJ_INFECT(str, s);
-
- return str;
-}
-
-/*
- * call-seq:
- * struct.to_s => string
- * struct.inspect => string
- *
- * Describe the contents of this struct in a string.
- */
-
-static VALUE
-rb_struct_inspect(VALUE s)
-{
- return rb_exec_recursive(inspect_struct, s, 0);
-}
-
-/*
- * call-seq:
- * struct.to_a => array
- * struct.values => array
- *
- * Returns the values for this instance as an array.
- *
- * Customer = Struct.new(:name, :address, :zip)
- * joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345)
- * joe.to_a[1] #=> "123 Maple, Anytown NC"
- */
-
-static VALUE
-rb_struct_to_a(VALUE s)
-{
- return rb_ary_new4(RSTRUCT_LEN(s), RSTRUCT_PTR(s));
-}
-
-/* :nodoc: */
-VALUE
-rb_struct_init_copy(VALUE copy, VALUE s)
-{
- if (copy == s) return copy;
- rb_check_frozen(copy);
- if (!rb_obj_is_instance_of(s, rb_obj_class(copy))) {
- rb_raise(rb_eTypeError, "wrong argument class");
- }
- if (RSTRUCT_LEN(copy) != RSTRUCT_LEN(s)) {
- rb_raise(rb_eTypeError, "struct size mismatch");
- }
- MEMCPY(RSTRUCT_PTR(copy), RSTRUCT_PTR(s), VALUE, RSTRUCT_LEN(copy));
-
- return copy;
-}
-
-static VALUE
-rb_struct_aref_id(VALUE s, ID id)
-{
- VALUE members;
- long i, len;
-
- members = rb_struct_members(s);
- len = RARRAY_LEN(members);
- for (i=0; i<len; i++) {
- if (SYM2ID(RARRAY_PTR(members)[i]) == id) {
- return RSTRUCT_PTR(s)[i];
- }
- }
- rb_name_error(id, "no member '%s' in struct", rb_id2name(id));
- return Qnil; /* not reached */
-}
-
-/*
- * call-seq:
- * struct[symbol] => anObject
- * struct[fixnum] => anObject
- *
- * Attribute Reference---Returns the value of the instance variable
- * named by <i>symbol</i>, or indexed (0..length-1) by
- * <i>fixnum</i>. Will raise <code>NameError</code> if the named
- * variable does not exist, or <code>IndexError</code> if the index is
- * out of range.
- *
- * Customer = Struct.new(:name, :address, :zip)
- * joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345)
- *
- * joe["name"] #=> "Joe Smith"
- * joe[:name] #=> "Joe Smith"
- * joe[0] #=> "Joe Smith"
- */
-
-VALUE
-rb_struct_aref(VALUE s, VALUE idx)
-{
- long i;
-
- if (TYPE(idx) == T_STRING || TYPE(idx) == T_SYMBOL) {
- return rb_struct_aref_id(s, rb_to_id(idx));
- }
-
- i = NUM2LONG(idx);
- if (i < 0) i = RSTRUCT_LEN(s) + i;
- if (i < 0)
- rb_raise(rb_eIndexError, "offset %ld too small for struct(size:%ld)",
- i, RSTRUCT_LEN(s));
- if (RSTRUCT_LEN(s) <= i)
- rb_raise(rb_eIndexError, "offset %ld too large for struct(size:%ld)",
- i, RSTRUCT_LEN(s));
- return RSTRUCT_PTR(s)[i];
-}
-
-static VALUE
-rb_struct_aset_id(VALUE s, ID id, VALUE val)
-{
- VALUE members;
- long i, len;
-
- members = rb_struct_members(s);
- rb_struct_modify(s);
- len = RARRAY_LEN(members);
- if (RSTRUCT_LEN(s) != RARRAY_LEN(members)) {
- rb_raise(rb_eTypeError, "struct size differs (%ld required %ld given)",
- RARRAY_LEN(members), RSTRUCT_LEN(s));
- }
- for (i=0; i<len; i++) {
- if (SYM2ID(RARRAY_PTR(members)[i]) == id) {
- RSTRUCT_PTR(s)[i] = val;
- return val;
- }
- }
- rb_name_error(id, "no member '%s' in struct", rb_id2name(id));
-}
-
-/*
- * call-seq:
- * struct[symbol] = obj => obj
- * struct[fixnum] = obj => obj
- *
- * Attribute Assignment---Assigns to the instance variable named by
- * <i>symbol</i> or <i>fixnum</i> the value <i>obj</i> and
- * returns it. Will raise a <code>NameError</code> if the named
- * variable does not exist, or an <code>IndexError</code> if the index
- * is out of range.
- *
- * Customer = Struct.new(:name, :address, :zip)
- * joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345)
- *
- * joe["name"] = "Luke"
- * joe[:zip] = "90210"
- *
- * joe.name #=> "Luke"
- * joe.zip #=> "90210"
- */
-
-VALUE
-rb_struct_aset(VALUE s, VALUE idx, VALUE val)
-{
- long i;
-
- if (TYPE(idx) == T_STRING || TYPE(idx) == T_SYMBOL) {
- return rb_struct_aset_id(s, rb_to_id(idx), val);
- }
-
- i = NUM2LONG(idx);
- if (i < 0) i = RSTRUCT_LEN(s) + i;
- if (i < 0) {
- rb_raise(rb_eIndexError, "offset %ld too small for struct(size:%ld)",
- i, RSTRUCT_LEN(s));
- }
- if (RSTRUCT_LEN(s) <= i) {
- rb_raise(rb_eIndexError, "offset %ld too large for struct(size:%ld)",
- i, RSTRUCT_LEN(s));
- }
- rb_struct_modify(s);
- return RSTRUCT_PTR(s)[i] = val;
-}
-
-static VALUE
-struct_entry(VALUE s, long n)
-{
- return rb_struct_aref(s, LONG2NUM(n));
-}
-
-/*
- * call-seq:
- * struct.values_at(selector,... ) => an_array
- *
- * Returns an array containing the elements in
- * _self_ corresponding to the given selector(s). The selectors
- * may be either integer indices or ranges.
- * See also </code>.select<code>.
- *
- * a = %w{ a b c d e f }
- * a.values_at(1, 3, 5)
- * a.values_at(1, 3, 5, 7)
- * a.values_at(-1, -3, -5, -7)
- * a.values_at(1..3, 2...5)
- */
-
-static VALUE
-rb_struct_values_at(int argc, VALUE *argv, VALUE s)
-{
- return rb_get_values_at(s, RSTRUCT_LEN(s), argc, argv, struct_entry);
-}
-
-/*
- * call-seq:
- * struct.select {|i| block } => array
- *
- * Invokes the block passing in successive elements from
- * <i>struct</i>, returning an array containing those elements
- * for which the block returns a true value (equivalent to
- * <code>Enumerable#select</code>).
- *
- * Lots = Struct.new(:a, :b, :c, :d, :e, :f)
- * l = Lots.new(11, 22, 33, 44, 55, 66)
- * l.select {|v| (v % 2).zero? } #=> [22, 44, 66]
- */
-
-static VALUE
-rb_struct_select(int argc, VALUE *argv, VALUE s)
-{
- VALUE result;
- long i;
-
- if (argc > 0) {
- rb_raise(rb_eArgError, "wrong number of arguments (%d for 0)", argc);
- }
- result = rb_ary_new();
- for (i = 0; i < RSTRUCT_LEN(s); i++) {
- if (RTEST(rb_yield(RSTRUCT_PTR(s)[i]))) {
- rb_ary_push(result, RSTRUCT_PTR(s)[i]);
- }
- }
-
- return result;
-}
-
-/*
- * call-seq:
- * struct == other_struct => true or false
- *
- * Equality---Returns <code>true</code> if <i>other_struct</i> is
- * equal to this one: they must be of the same class as generated by
- * <code>Struct::new</code>, and the values of all instance variables
- * must be equal (according to <code>Object#==</code>).
- *
- * Customer = Struct.new(:name, :address, :zip)
- * joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345)
- * joejr = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345)
- * jane = Customer.new("Jane Doe", "456 Elm, Anytown NC", 12345)
- * joe == joejr #=> true
- * joe == jane #=> false
- */
-
-static VALUE
-rb_struct_equal(VALUE s, VALUE s2)
-{
- long i;
-
- if (s == s2) return Qtrue;
- if (TYPE(s2) != T_STRUCT) return Qfalse;
- if (rb_obj_class(s) != rb_obj_class(s2)) return Qfalse;
- if (RSTRUCT_LEN(s) != RSTRUCT_LEN(s2)) {
- rb_bug("inconsistent struct"); /* should never happen */
- }
-
- for (i=0; i<RSTRUCT_LEN(s); i++) {
- if (!rb_equal(RSTRUCT_PTR(s)[i], RSTRUCT_PTR(s2)[i])) return Qfalse;
- }
- return Qtrue;
-}
-
-/*
- * call-seq:
- * struct.hash => fixnum
- *
- * Return a hash value based on this struct's contents.
- */
-
-static VALUE
-rb_struct_hash(VALUE s)
-{
- long i, h;
- VALUE n;
-
- h = rb_hash(rb_obj_class(s));
- for (i = 0; i < RSTRUCT_LEN(s); i++) {
- h = (h << 1) | (h<0 ? 1 : 0);
- n = rb_hash(RSTRUCT_PTR(s)[i]);
- h ^= NUM2LONG(n);
- }
- return LONG2FIX(h);
-}
-
-/*
- * code-seq:
- * struct.eql?(other) => true or false
- *
- * Two structures are equal if they are the same object, or if all their
- * fields are equal (using <code>eql?</code>).
- */
-
-static VALUE
-rb_struct_eql(VALUE s, VALUE s2)
-{
- long i;
-
- if (s == s2) return Qtrue;
- if (TYPE(s2) != T_STRUCT) return Qfalse;
- if (rb_obj_class(s) != rb_obj_class(s2)) return Qfalse;
- if (RSTRUCT_LEN(s) != RSTRUCT_LEN(s2)) {
- rb_bug("inconsistent struct"); /* should never happen */
- }
-
- for (i=0; i<RSTRUCT_LEN(s); i++) {
- if (!rb_eql(RSTRUCT_PTR(s)[i], RSTRUCT_PTR(s2)[i])) return Qfalse;
- }
- return Qtrue;
-}
-
-/*
- * call-seq:
- * struct.length => fixnum
- * struct.size => fixnum
- *
- * Returns the number of instance variables.
- *
- * Customer = Struct.new(:name, :address, :zip)
- * joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345)
- * joe.length #=> 3
- */
-
-static VALUE
-rb_struct_size(VALUE s)
-{
- return LONG2FIX(RSTRUCT_LEN(s));
-}
-
-/*
- * A <code>Struct</code> is a convenient way to bundle a number of
- * attributes together, using accessor methods, without having to write
- * an explicit class.
- *
- * The <code>Struct</code> class is a generator of specific classes,
- * each one of which is defined to hold a set of variables and their
- * accessors. In these examples, we'll call the generated class
- * ``<i>Customer</i>Class,'' and we'll show an example instance of that
- * class as ``<i>Customer</i>Inst.''
- *
- * In the descriptions that follow, 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_Struct(void)
-{
- rb_cStruct = rb_define_class("Struct", rb_cObject);
- rb_include_module(rb_cStruct, rb_mEnumerable);
-
- rb_undef_alloc_func(rb_cStruct);
- rb_define_singleton_method(rb_cStruct, "new", rb_struct_s_def, -1);
-
- rb_define_method(rb_cStruct, "initialize", rb_struct_initialize, -2);
- rb_define_method(rb_cStruct, "initialize_copy", rb_struct_init_copy, 1);
-
- rb_define_method(rb_cStruct, "==", rb_struct_equal, 1);
- rb_define_method(rb_cStruct, "eql?", rb_struct_eql, 1);
- rb_define_method(rb_cStruct, "hash", rb_struct_hash, 0);
-
- rb_define_method(rb_cStruct, "to_s", rb_struct_inspect, 0);
- rb_define_method(rb_cStruct, "inspect", rb_struct_inspect, 0);
- rb_define_method(rb_cStruct, "to_a", rb_struct_to_a, 0);
- rb_define_method(rb_cStruct, "values", rb_struct_to_a, 0);
- rb_define_method(rb_cStruct, "size", rb_struct_size, 0);
- rb_define_method(rb_cStruct, "length", rb_struct_size, 0);
-
- rb_define_method(rb_cStruct, "each", rb_struct_each, 0);
- rb_define_method(rb_cStruct, "each_pair", rb_struct_each_pair, 0);
- rb_define_method(rb_cStruct, "[]", rb_struct_aref, 1);
- rb_define_method(rb_cStruct, "[]=", rb_struct_aset, 2);
- rb_define_method(rb_cStruct, "select", rb_struct_select, -1);
- rb_define_method(rb_cStruct, "values_at", rb_struct_values_at, -1);
-
- rb_define_method(rb_cStruct, "members", rb_struct_members_m, 0);
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-30 23:50:07 +0000