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ruby--ruby/struct.c
Peter Zhu efb91ff19b Rename rb_ary_tmp_new to rb_ary_hidden_new 
rb_ary_tmp_new suggests that the array is temporary in some way, but
that's not true, it just creates an array that's hidden and not on the
transient heap. This commit renames it to rb_ary_hidden_new.
2022-07-26 09:12:09 -04:00

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/**********************************************************************
struct.c -
$Author$
created at: Tue Mar 22 18:44:30 JST 1995
Copyright (C) 1993-2007 Yukihiro Matsumoto
**********************************************************************/
#include "id.h"
#include "internal.h"
#include "internal/class.h"
#include "internal/error.h"
#include "internal/hash.h"
#include "internal/object.h"
#include "internal/proc.h"
#include "internal/struct.h"
#include "internal/symbol.h"
#include "transient_heap.h"
#include "vm_core.h"
#include "builtin.h"
/* only for struct[:field] access */
enum {
AREF_HASH_UNIT = 5,
AREF_HASH_THRESHOLD = 10
};
VALUE rb_cStruct;
static ID id_members, id_back_members, id_keyword_init;
static VALUE struct_alloc(VALUE);
static inline VALUE
struct_ivar_get(VALUE c, ID id)
{
VALUE orig = c;
VALUE ivar = rb_attr_get(c, id);
if (!NIL_P(ivar))
return ivar;
for (;;) {
c = rb_class_superclass(c);
if (c == 0 || c == rb_cStruct)
return Qnil;
RUBY_ASSERT(RB_TYPE_P(c, T_CLASS));
ivar = rb_attr_get(c, id);
if (!NIL_P(ivar)) {
return rb_ivar_set(orig, id, ivar);
}
}
}
VALUE
rb_struct_s_keyword_init(VALUE klass)
{
return struct_ivar_get(klass, id_keyword_init);
}
VALUE
rb_struct_s_members(VALUE klass)
{
VALUE members = struct_ivar_get(klass, id_members);
if (NIL_P(members)) {
rb_raise(rb_eTypeError, "uninitialized struct");
}
if (!RB_TYPE_P(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 long
struct_member_pos_ideal(VALUE name, long mask)
{
/* (id & (mask/2)) * 2 */
return (SYM2ID(name) >> (ID_SCOPE_SHIFT - 1)) & mask;
}
static long
struct_member_pos_probe(long prev, long mask)
{
/* (((prev/2) * AREF_HASH_UNIT + 1) & (mask/2)) * 2 */
return (prev * AREF_HASH_UNIT + 2) & mask;
}
static VALUE
struct_set_members(VALUE klass, VALUE /* frozen hidden array */ members)
{
VALUE back;
const long members_length = RARRAY_LEN(members);
if (members_length <= AREF_HASH_THRESHOLD) {
back = members;
}
else {
long i, j, mask = 64;
VALUE name;
while (mask < members_length * AREF_HASH_UNIT) mask *= 2;
back = rb_ary_hidden_new(mask + 1);
rb_ary_store(back, mask, INT2FIX(members_length));
mask -= 2; /* mask = (2**k-1)*2 */
for (i=0; i < members_length; i++) {
name = RARRAY_AREF(members, i);
j = struct_member_pos_ideal(name, mask);
for (;;) {
if (!RTEST(RARRAY_AREF(back, j))) {
rb_ary_store(back, j, name);
rb_ary_store(back, j + 1, INT2FIX(i));
break;
}
j = struct_member_pos_probe(j, mask);
}
}
OBJ_FREEZE_RAW(back);
}
rb_ivar_set(klass, id_members, members);
rb_ivar_set(klass, id_back_members, back);
return members;
}
static inline int
struct_member_pos(VALUE s, VALUE name)
{
VALUE back = struct_ivar_get(rb_obj_class(s), id_back_members);
long j, mask;
if (UNLIKELY(NIL_P(back))) {
rb_raise(rb_eTypeError, "uninitialized struct");
}
if (UNLIKELY(!RB_TYPE_P(back, T_ARRAY))) {
rb_raise(rb_eTypeError, "corrupted struct");
}
mask = RARRAY_LEN(back);
if (mask <= AREF_HASH_THRESHOLD) {
if (UNLIKELY(RSTRUCT_LEN(s) != mask)) {
rb_raise(rb_eTypeError,
"struct size differs (%ld required %ld given)",
mask, RSTRUCT_LEN(s));
}
for (j = 0; j < mask; j++) {
if (RARRAY_AREF(back, j) == name)
return (int)j;
}
return -1;
}
if (UNLIKELY(RSTRUCT_LEN(s) != FIX2INT(RARRAY_AREF(back, mask-1)))) {
rb_raise(rb_eTypeError, "struct size differs (%d required %ld given)",
FIX2INT(RARRAY_AREF(back, mask-1)), RSTRUCT_LEN(s));
}
mask -= 3;
j = struct_member_pos_ideal(name, mask);
for (;;) {
VALUE e = RARRAY_AREF(back, j);
if (e == name)
return FIX2INT(RARRAY_AREF(back, j + 1));
if (!RTEST(e)) {
return -1;
}
j = struct_member_pos_probe(j, mask);
}
}
/*
* call-seq:
* StructClass::members -> array_of_symbols
*
* Returns the member names of the Struct descendant as an array:
*
* Customer = Struct.new(:name, :address, :zip)
* Customer.members # => [:name, :address, :zip]
*
*/
static VALUE
rb_struct_s_members_m(VALUE klass)
{
VALUE members = rb_struct_s_members(klass);
return rb_ary_dup(members);
}
/*
* call-seq:
* members -> array_of_symbols
*
* Returns the member names from +self+ as an array:
*
* Customer = Struct.new(:name, :address, :zip)
* Customer.new.members # => [:name, :address, :zip]
*
* Related: #to_a.
*/
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 slot = ID2SYM(id);
int i = struct_member_pos(obj, slot);
if (i != -1) {
return RSTRUCT_GET(obj, i);
}
rb_name_err_raise("`%1$s' is not a struct member", obj, ID2SYM(id));
UNREACHABLE_RETURN(Qnil);
}
static void
rb_struct_modify(VALUE s)
{
rb_check_frozen(s);
}
static VALUE
anonymous_struct(VALUE klass)
{
VALUE nstr;
nstr = rb_class_new(klass);
rb_make_metaclass(nstr, RBASIC(klass)->klass);
rb_class_inherited(klass, nstr);
return nstr;
}
static VALUE
new_struct(VALUE name, VALUE super)
{
/* old style: should we warn? */
ID id;
name = rb_str_to_str(name);
if (!rb_is_const_name(name)) {
rb_name_err_raise("identifier %1$s needs to be constant",
super, name);
}
id = rb_to_id(name);
if (rb_const_defined_at(super, id)) {
rb_warn("redefining constant %"PRIsVALUE"::%"PRIsVALUE, super, name);
rb_mod_remove_const(super, ID2SYM(id));
}
return rb_define_class_id_under(super, id, super);
}
NORETURN(static void invalid_struct_pos(VALUE s, VALUE idx));
static void
define_aref_method(VALUE nstr, VALUE name, VALUE off)
{
rb_add_method_optimized(nstr, SYM2ID(name), OPTIMIZED_METHOD_TYPE_STRUCT_AREF, FIX2UINT(off), METHOD_VISI_PUBLIC);
}
static void
define_aset_method(VALUE nstr, VALUE name, VALUE off)
{
rb_add_method_optimized(nstr, SYM2ID(name), OPTIMIZED_METHOD_TYPE_STRUCT_ASET, FIX2UINT(off), METHOD_VISI_PUBLIC);
}
static VALUE
rb_struct_s_inspect(VALUE klass)
{
VALUE inspect = rb_class_name(klass);
if (RTEST(rb_struct_s_keyword_init(klass))) {
rb_str_cat_cstr(inspect, "(keyword_init: true)");
}
return inspect;
}
#if 0 /* for RDoc */
/*
* call-seq:
* StructClass::keyword_init? -> true or falsy value
*
* Returns +true+ if the class was initialized with <tt>keyword_init: true</tt>.
* Otherwise returns +nil+ or +false+.
*
* Examples:
* Foo = Struct.new(:a)
* Foo.keyword_init? # => nil
* Bar = Struct.new(:a, keyword_init: true)
* Bar.keyword_init? # => true
* Baz = Struct.new(:a, keyword_init: false)
* Baz.keyword_init? # => false
*/
static VALUE
rb_struct_s_keyword_init_p(VALUE obj)
{
}
#endif
#define rb_struct_s_keyword_init_p rb_struct_s_keyword_init
static VALUE
setup_struct(VALUE nstr, VALUE members)
{
long i, len;
members = struct_set_members(nstr, members);
rb_define_alloc_func(nstr, struct_alloc);
rb_define_singleton_method(nstr, "new", rb_class_new_instance_pass_kw, -1);
rb_define_singleton_method(nstr, "[]", rb_class_new_instance_pass_kw, -1);
rb_define_singleton_method(nstr, "members", rb_struct_s_members_m, 0);
rb_define_singleton_method(nstr, "inspect", rb_struct_s_inspect, 0);
rb_define_singleton_method(nstr, "keyword_init?", rb_struct_s_keyword_init_p, 0);
len = RARRAY_LEN(members);
for (i=0; i< len; i++) {
VALUE sym = RARRAY_AREF(members, i);
ID id = SYM2ID(sym);
VALUE off = LONG2NUM(i);
define_aref_method(nstr, sym, off);
define_aset_method(nstr, ID2SYM(rb_id_attrset(id)), off);
}
return nstr;
}
VALUE
rb_struct_alloc_noinit(VALUE klass)
{
return struct_alloc(klass);
}
static VALUE
struct_make_members_list(va_list ar)
{
char *mem;
VALUE ary, list = rb_ident_hash_new();
st_table *tbl = RHASH_TBL_RAW(list);
RBASIC_CLEAR_CLASS(list);
OBJ_WB_UNPROTECT(list);
while ((mem = va_arg(ar, char*)) != 0) {
VALUE sym = rb_sym_intern_ascii_cstr(mem);
if (st_insert(tbl, sym, Qtrue)) {
rb_raise(rb_eArgError, "duplicate member: %s", mem);
}
}
ary = rb_hash_keys(list);
st_clear(tbl);
RBASIC_CLEAR_CLASS(ary);
OBJ_FREEZE_RAW(ary);
return ary;
}
static VALUE
struct_define_without_accessor(VALUE outer, const char *class_name, VALUE super, rb_alloc_func_t alloc, VALUE members)
{
VALUE klass;
if (class_name) {
if (outer) {
klass = rb_define_class_under(outer, class_name, super);
}
else {
klass = rb_define_class(class_name, super);
}
}
else {
klass = anonymous_struct(super);
}
struct_set_members(klass, members);
if (alloc) {
rb_define_alloc_func(klass, alloc);
}
else {
rb_define_alloc_func(klass, struct_alloc);
}
return klass;
}
VALUE
rb_struct_define_without_accessor_under(VALUE outer, const char *class_name, VALUE super, rb_alloc_func_t alloc, ...)
{
va_list ar;
VALUE members;
va_start(ar, alloc);
members = struct_make_members_list(ar);
va_end(ar);
return struct_define_without_accessor(outer, class_name, super, alloc, members);
}
VALUE
rb_struct_define_without_accessor(const char *class_name, VALUE super, rb_alloc_func_t alloc, ...)
{
va_list ar;
VALUE members;
va_start(ar, alloc);
members = struct_make_members_list(ar);
va_end(ar);
return struct_define_without_accessor(0, class_name, super, alloc, members);
}
VALUE
rb_struct_define(const char *name, ...)
{
va_list ar;
VALUE st, ary;
va_start(ar, name);
ary = struct_make_members_list(ar);
va_end(ar);
if (!name) st = anonymous_struct(rb_cStruct);
else st = new_struct(rb_str_new2(name), rb_cStruct);
return setup_struct(st, ary);
}
VALUE
rb_struct_define_under(VALUE outer, const char *name, ...)
{
va_list ar;
VALUE ary;
va_start(ar, name);
ary = struct_make_members_list(ar);
va_end(ar);
return setup_struct(rb_define_class_under(outer, name, rb_cStruct), ary);
}
/*
* call-seq:
* Struct.new(*member_names, keyword_init: false){|Struct_subclass| ... } -> Struct_subclass
* Struct.new(class_name, *member_names, keyword_init: false){|Struct_subclass| ... } -> Struct_subclass
* Struct_subclass.new(*member_names) -> Struct_subclass_instance
* Struct_subclass.new(**member_names) -> Struct_subclass_instance
*
* <tt>Struct.new</tt> returns a new subclass of +Struct+. The new subclass:
*
* - May be anonymous, or may have the name given by +class_name+.
* - May have members as given by +member_names+.
* - May have initialization via ordinary arguments (the default)
* or via keyword arguments (if <tt>keyword_init: true</tt> is given).
*
* The new subclass has its own method <tt>::new</tt>; thus:
*
* Foo = Struct.new('Foo', :foo, :bar) # => Struct::Foo
* f = Foo.new(0, 1) # => #<struct Struct::Foo foo=0, bar=1>
*
* <b>\Class Name</b>
*
* With string argument +class_name+,
* returns a new subclass of +Struct+ named <tt>Struct::<em>class_name</em></tt>:
*
* Foo = Struct.new('Foo', :foo, :bar) # => Struct::Foo
* Foo.name # => "Struct::Foo"
* Foo.superclass # => Struct
*
* Without string argument +class_name+,
* returns a new anonymous subclass of +Struct+:
*
* Struct.new(:foo, :bar).name # => nil
*
* <b>Block</b>
*
* With a block given, the created subclass is yielded to the block:
*
* Customer = Struct.new('Customer', :name, :address) do |new_class|
* p "The new subclass is #{new_class}"
* def greeting
* "Hello #{name} at #{address}"
* end
* end # => Struct::Customer
* dave = Customer.new('Dave', '123 Main')
* dave # => #<struct Struct::Customer name="Dave", address="123 Main">
* dave.greeting # => "Hello Dave at 123 Main"
*
* Output, from <tt>Struct.new</tt>:
*
* "The new subclass is Struct::Customer"
*
* <b>Member Names</b>
*
* \Symbol arguments +member_names+
* determines the members of the new subclass:
*
* Struct.new(:foo, :bar).members # => [:foo, :bar]
* Struct.new('Foo', :foo, :bar).members # => [:foo, :bar]
*
* The new subclass has instance methods corresponding to +member_names+:
*
* Foo = Struct.new('Foo', :foo, :bar)
* Foo.instance_methods(false) # => [:foo, :bar, :foo=, :bar=]
* f = Foo.new # => #<struct Struct::Foo foo=nil, bar=nil>
* f.foo # => nil
* f.foo = 0 # => 0
* f.bar # => nil
* f.bar = 1 # => 1
* f # => #<struct Struct::Foo foo=0, bar=1>
*
* <b>Singleton Methods</b>
*
* A subclass returned by Struct.new has these singleton methods:
*
* - \Method <tt>::new </tt> creates an instance of the subclass:
*
* Foo.new # => #<struct Struct::Foo foo=nil, bar=nil>
* Foo.new(0) # => #<struct Struct::Foo foo=0, bar=nil>
* Foo.new(0, 1) # => #<struct Struct::Foo foo=0, bar=1>
* Foo.new(0, 1, 2) # Raises ArgumentError: struct size differs
*
* \Method <tt>::[]</tt> is an alias for method <tt>::new</tt>.
*
* - \Method <tt>:inspect</tt> returns a string representation of the subclass:
*
* Foo.inspect
* # => "Struct::Foo"
*
* - \Method <tt>::members</tt> returns an array of the member names:
*
* Foo.members # => [:foo, :bar]
*
* <b>Keyword Argument</b>
*
* By default, the arguments for initializing an instance of the new subclass
* are ordinary arguments (not keyword arguments).
* With optional keyword argument <tt>keyword_init: true</tt>,
* the new subclass is initialized with keyword arguments:
*
* # Without keyword_init: true.
* Foo = Struct.new('Foo', :foo, :bar)
* Foo # => Struct::Foo
* Foo.new(0, 1) # => #<struct Struct::Foo foo=0, bar=1>
* # With keyword_init: true.
* Bar = Struct.new(:foo, :bar, keyword_init: true)
* Bar # => # => Bar(keyword_init: true)
* Bar.new(bar: 1, foo: 0) # => #<struct Bar foo=0, bar=1>
*
*/
static VALUE
rb_struct_s_def(int argc, VALUE *argv, VALUE klass)
{
VALUE name, rest, keyword_init = Qnil;
long i;
VALUE st;
st_table *tbl;
VALUE opt;
argc = rb_scan_args(argc, argv, "1*:", NULL, NULL, &opt);
name = argv[0];
if (SYMBOL_P(name)) {
name = Qnil;
}
else {
--argc;
++argv;
}
if (!NIL_P(opt)) {
static ID keyword_ids[1];
if (!keyword_ids[0]) {
keyword_ids[0] = rb_intern("keyword_init");
}
rb_get_kwargs(opt, keyword_ids, 0, 1, &keyword_init);
if (keyword_init == Qundef) {
keyword_init = Qnil;
}
else if (RTEST(keyword_init)) {
keyword_init = Qtrue;
}
}
rest = rb_ident_hash_new();
RBASIC_CLEAR_CLASS(rest);
OBJ_WB_UNPROTECT(rest);
tbl = RHASH_TBL_RAW(rest);
for (i=0; i<argc; i++) {
VALUE mem = rb_to_symbol(argv[i]);
if (rb_is_attrset_sym(mem)) {
rb_raise(rb_eArgError, "invalid struct member: %"PRIsVALUE, mem);
}
if (st_insert(tbl, mem, Qtrue)) {
rb_raise(rb_eArgError, "duplicate member: %"PRIsVALUE, mem);
}
}
rest = rb_hash_keys(rest);
st_clear(tbl);
RBASIC_CLEAR_CLASS(rest);
OBJ_FREEZE_RAW(rest);
if (NIL_P(name)) {
st = anonymous_struct(klass);
}
else {
st = new_struct(name, klass);
}
setup_struct(st, rest);
rb_ivar_set(st, id_keyword_init, keyword_init);
if (rb_block_given_p()) {
rb_mod_module_eval(0, 0, st);
}
return st;
}
static long
num_members(VALUE klass)
{
VALUE members;
members = struct_ivar_get(klass, id_members);
if (!RB_TYPE_P(members, T_ARRAY)) {
rb_raise(rb_eTypeError, "broken members");
}
return RARRAY_LEN(members);
}
/*
*/
struct struct_hash_set_arg {
VALUE self;
VALUE unknown_keywords;
};
static int rb_struct_pos(VALUE s, VALUE *name);
static int
struct_hash_set_i(VALUE key, VALUE val, VALUE arg)
{
struct struct_hash_set_arg *args = (struct struct_hash_set_arg *)arg;
int i = rb_struct_pos(args->self, &key);
if (i < 0) {
if (NIL_P(args->unknown_keywords)) {
args->unknown_keywords = rb_ary_new();
}
rb_ary_push(args->unknown_keywords, key);
}
else {
rb_struct_modify(args->self);
RSTRUCT_SET(args->self, i, val);
}
return ST_CONTINUE;
}
static VALUE
rb_struct_initialize_m(int argc, const VALUE *argv, VALUE self)
{
VALUE klass = rb_obj_class(self);
rb_struct_modify(self);
long n = num_members(klass);
if (argc == 0) {
rb_mem_clear((VALUE *)RSTRUCT_CONST_PTR(self), n);
return Qnil;
}
bool keyword_init = false;
switch (rb_struct_s_keyword_init(klass)) {
default:
if (argc > 1 || !RB_TYPE_P(argv[0], T_HASH)) {
rb_raise(rb_eArgError, "wrong number of arguments (given %d, expected 0)", argc);
}
keyword_init = true;
break;
case Qfalse:
break;
case Qnil:
if (argc > 1 || !RB_TYPE_P(argv[0], T_HASH)) {
break;
}
keyword_init = rb_keyword_given_p();
break;
}
if (keyword_init) {
struct struct_hash_set_arg arg;
rb_mem_clear((VALUE *)RSTRUCT_CONST_PTR(self), n);
arg.self = self;
arg.unknown_keywords = Qnil;
rb_hash_foreach(argv[0], struct_hash_set_i, (VALUE)&arg);
if (arg.unknown_keywords != Qnil) {
rb_raise(rb_eArgError, "unknown keywords: %s",
RSTRING_PTR(rb_ary_join(arg.unknown_keywords, rb_str_new2(", "))));
}
}
else {
if (n < argc) {
rb_raise(rb_eArgError, "struct size differs");
}
for (long i=0; i<argc; i++) {
RSTRUCT_SET(self, i, argv[i]);
}
if (n > argc) {
rb_mem_clear((VALUE *)RSTRUCT_CONST_PTR(self)+argc, n-argc);
}
}
return Qnil;
}
VALUE
rb_struct_initialize(VALUE self, VALUE values)
{
rb_struct_initialize_m(RARRAY_LENINT(values), RARRAY_CONST_PTR(values), self);
RB_GC_GUARD(values);
return Qnil;
}
static VALUE *
struct_heap_alloc(VALUE st, size_t len)
{
VALUE *ptr = rb_transient_heap_alloc((VALUE)st, sizeof(VALUE) * len);
if (ptr) {
RSTRUCT_TRANSIENT_SET(st);
return ptr;
}
else {
RSTRUCT_TRANSIENT_UNSET(st);
return ALLOC_N(VALUE, len);
}
}
#if USE_TRANSIENT_HEAP
void
rb_struct_transient_heap_evacuate(VALUE obj, int promote)
{
if (RSTRUCT_TRANSIENT_P(obj)) {
const VALUE *old_ptr = rb_struct_const_heap_ptr(obj);
VALUE *new_ptr;
long len = RSTRUCT_LEN(obj);
if (promote) {
new_ptr = ALLOC_N(VALUE, len);
FL_UNSET_RAW(obj, RSTRUCT_TRANSIENT_FLAG);
}
else {
new_ptr = struct_heap_alloc(obj, len);
}
MEMCPY(new_ptr, old_ptr, VALUE, len);
RSTRUCT(obj)->as.heap.ptr = new_ptr;
}
}
#endif
static VALUE
struct_alloc(VALUE klass)
{
long n;
NEWOBJ_OF(st, struct RStruct, klass, T_STRUCT | (RGENGC_WB_PROTECTED_STRUCT ? FL_WB_PROTECTED : 0));
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((VALUE *)st->as.ary, n);
}
else {
st->as.heap.ptr = struct_heap_alloc((VALUE)st, n);
rb_mem_clear((VALUE *)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_LENINT(values), RARRAY_CONST_PTR(values), klass);
}
VALUE
rb_struct_new(VALUE klass, ...)
{
VALUE tmpargs[16], *mem = tmpargs;
int size, i;
va_list args;
size = rb_long2int(num_members(klass));
if (size > numberof(tmpargs)) {
tmpargs[0] = rb_ary_hidden_new(size);
mem = RARRAY_PTR(tmpargs[0]);
}
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);
}
static VALUE
struct_enum_size(VALUE s, VALUE args, VALUE eobj)
{
return rb_struct_size(s);
}
/*
* call-seq:
* each {|value| ... } -> self
* each -> enumerator
*
* Calls the given block with the value of each member; returns +self+:
*
* Customer = Struct.new(:name, :address, :zip)
* joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345)
* joe.each {|value| p value }
*
* Output:
*
* "Joe Smith"
* "123 Maple, Anytown NC"
* 12345
*
* Returns an Enumerator if no block is given.
*
* Related: #each_pair.
*/
static VALUE
rb_struct_each(VALUE s)
{
long i;
RETURN_SIZED_ENUMERATOR(s, 0, 0, struct_enum_size);
for (i=0; i<RSTRUCT_LEN(s); i++) {
rb_yield(RSTRUCT_GET(s, i));
}
return s;
}
/*
* call-seq:
* each_pair {|(name, value)| ... } -> self
* each_pair -> enumerator
*
* Calls the given block with each member name/value pair; returns +self+:
*
* Customer = Struct.new(:name, :address, :zip) # => Customer
* joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345)
* joe.each_pair {|(name, value)| p "#{name} => #{value}" }
*
* Output:
*
* "name => Joe Smith"
* "address => 123 Maple, Anytown NC"
* "zip => 12345"
*
* Returns an Enumerator if no block is given.
*
* Related: #each.
*
*/
static VALUE
rb_struct_each_pair(VALUE s)
{
VALUE members;
long i;
RETURN_SIZED_ENUMERATOR(s, 0, 0, struct_enum_size);
members = rb_struct_members(s);
if (rb_block_pair_yield_optimizable()) {
for (i=0; i<RSTRUCT_LEN(s); i++) {
VALUE key = rb_ary_entry(members, i);
VALUE value = RSTRUCT_GET(s, i);
rb_yield_values(2, key, value);
}
}
else {
for (i=0; i<RSTRUCT_LEN(s); i++) {
VALUE key = rb_ary_entry(members, i);
VALUE value = RSTRUCT_GET(s, i);
rb_yield(rb_assoc_new(key, value));
}
}
return s;
}
static VALUE
inspect_struct(VALUE s, VALUE dummy, int recur)
{
VALUE cname = rb_class_path(rb_obj_class(s));
VALUE members, str = rb_str_new2("#<struct ");
long i, len;
char first = RSTRING_PTR(cname)[0];
if (recur || first != '#') {
rb_str_append(str, cname);
}
if (recur) {
return rb_str_cat2(str, ":...>");
}
members = rb_struct_members(s);
len = RSTRUCT_LEN(s);
for (i=0; i<len; i++) {
VALUE slot;
ID id;
if (i > 0) {
rb_str_cat2(str, ", ");
}
else if (first != '#') {
rb_str_cat2(str, " ");
}
slot = RARRAY_AREF(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_GET(s, i)));
}
rb_str_cat2(str, ">");
return str;
}
/*
* call-seq:
* inspect -> string
*
* Returns a string representation of +self+:
*
* Customer = Struct.new(:name, :address, :zip) # => Customer
* joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345)
* joe.inspect # => "#<struct Customer name=\"Joe Smith\", address=\"123 Maple, Anytown NC\", zip=12345>"
*
* Struct#to_s is an alias for Struct#inspect.
*
*/
static VALUE
rb_struct_inspect(VALUE s)
{
return rb_exec_recursive(inspect_struct, s, 0);
}
/*
* call-seq:
* to_a -> array
*
* Returns the values in +self+ as an array:
*
* Customer = Struct.new(:name, :address, :zip)
* joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345)
* joe.to_a # => ["Joe Smith", "123 Maple, Anytown NC", 12345]
*
* Struct#values and Struct#deconstruct are aliases for Struct#to_a.
*
* Related: #members.
*/
static VALUE
rb_struct_to_a(VALUE s)
{
return rb_ary_new4(RSTRUCT_LEN(s), RSTRUCT_CONST_PTR(s));
}
/*
* call-seq:
* to_h -> hash
* to_h {|name, value| ... } -> hash
*
* Returns a hash containing the name and value for each member:
*
* Customer = Struct.new(:name, :address, :zip)
* joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345)
* h = joe.to_h
* h # => {:name=>"Joe Smith", :address=>"123 Maple, Anytown NC", :zip=>12345}
*
* If a block is given, it is called with each name/value pair;
* the block should return a 2-element array whose elements will become
* a key/value pair in the returned hash:
*
* h = joe.to_h{|name, value| [name.upcase, value.to_s.upcase]}
* h # => {:NAME=>"JOE SMITH", :ADDRESS=>"123 MAPLE, ANYTOWN NC", :ZIP=>"12345"}
*
* Raises ArgumentError if the block returns an inappropriate value.
*
*/
static VALUE
rb_struct_to_h(VALUE s)
{
VALUE h = rb_hash_new_with_size(RSTRUCT_LEN(s));
VALUE members = rb_struct_members(s);
long i;
int block_given = rb_block_given_p();
for (i=0; i<RSTRUCT_LEN(s); i++) {
VALUE k = rb_ary_entry(members, i), v = RSTRUCT_GET(s, i);
if (block_given)
rb_hash_set_pair(h, rb_yield_values(2, k, v));
else
rb_hash_aset(h, k, v);
}
return h;
}
/*
* call-seq:
* deconstruct_keys(array_of_names) -> hash
*
* Returns a hash of the name/value pairs for the given member names.
*
* Customer = Struct.new(:name, :address, :zip)
* joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345)
* h = joe.deconstruct_keys([:zip, :address])
* h # => {:zip=>12345, :address=>"123 Maple, Anytown NC"}
*
* Returns all names and values if +array_of_names+ is +nil+:
*
* h = joe.deconstruct_keys(nil)
* h # => {:name=>"Joseph Smith, Jr.", :address=>"123 Maple, Anytown NC", :zip=>12345}
*
*/
static VALUE
rb_struct_deconstruct_keys(VALUE s, VALUE keys)
{
VALUE h;
long i;
if (NIL_P(keys)) {
return rb_struct_to_h(s);
}
if (UNLIKELY(!RB_TYPE_P(keys, T_ARRAY))) {
rb_raise(rb_eTypeError,
"wrong argument type %"PRIsVALUE" (expected Array or nil)",
rb_obj_class(keys));
}
if (RSTRUCT_LEN(s) < RARRAY_LEN(keys)) {
return rb_hash_new_with_size(0);
}
h = rb_hash_new_with_size(RARRAY_LEN(keys));
for (i=0; i<RARRAY_LEN(keys); i++) {
VALUE key = RARRAY_AREF(keys, i);
int i = rb_struct_pos(s, &key);
if (i < 0) {
return h;
}
rb_hash_aset(h, key, RSTRUCT_GET(s, i));
}
return h;
}
/* :nodoc: */
VALUE
rb_struct_init_copy(VALUE copy, VALUE s)
{
long i, len;
if (!OBJ_INIT_COPY(copy, s)) return copy;
if (RSTRUCT_LEN(copy) != RSTRUCT_LEN(s)) {
rb_raise(rb_eTypeError, "struct size mismatch");
}
for (i=0, len=RSTRUCT_LEN(copy); i<len; i++) {
RSTRUCT_SET(copy, i, RSTRUCT_GET(s, i));
}
return copy;
}
static int
rb_struct_pos(VALUE s, VALUE *name)
{
long i;
VALUE idx = *name;
if (SYMBOL_P(idx)) {
return struct_member_pos(s, idx);
}
else if (RB_TYPE_P(idx, T_STRING)) {
idx = rb_check_symbol(name);
if (NIL_P(idx)) return -1;
return struct_member_pos(s, idx);
}
else {
long len;
i = NUM2LONG(idx);
len = RSTRUCT_LEN(s);
if (i < 0) {
if (i + len < 0) {
*name = LONG2FIX(i);
return -1;
}
i += len;
}
else if (len <= i) {
*name = LONG2FIX(i);
return -1;
}
return (int)i;
}
}
static void
invalid_struct_pos(VALUE s, VALUE idx)
{
if (FIXNUM_P(idx)) {
long i = FIX2INT(idx), len = RSTRUCT_LEN(s);
if (i < 0) {
rb_raise(rb_eIndexError, "offset %ld too small for struct(size:%ld)",
i, len);
}
else {
rb_raise(rb_eIndexError, "offset %ld too large for struct(size:%ld)",
i, len);
}
}
else {
rb_name_err_raise("no member '%1$s' in struct", s, idx);
}
}
/*
* call-seq:
* struct[name] -> object
* struct[n] -> object
*
* Returns a value from +self+.
*
* With symbol or string argument +name+ given, returns the value for the named member:
*
* Customer = Struct.new(:name, :address, :zip)
* joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345)
* joe[:zip] # => 12345
*
* Raises NameError if +name+ is not the name of a member.
*
* With integer argument +n+ given, returns <tt>self.values[n]</tt>
* if +n+ is in range;
* see Array@Array+Indexes:
*
* joe[2] # => 12345
* joe[-2] # => "123 Maple, Anytown NC"
*
* Raises IndexError if +n+ is out of range.
*
*/
VALUE
rb_struct_aref(VALUE s, VALUE idx)
{
int i = rb_struct_pos(s, &idx);
if (i < 0) invalid_struct_pos(s, idx);
return RSTRUCT_GET(s, i);
}
/*
* call-seq:
* struct[name] = value -> value
* struct[n] = value -> value
*
* Assigns a value to a member.
*
* With symbol or string argument +name+ given, assigns the given +value+
* to the named member; returns +value+:
*
* Customer = Struct.new(:name, :address, :zip)
* joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345)
* joe[:zip] = 54321 # => 54321
* joe # => #<struct Customer name="Joe Smith", address="123 Maple, Anytown NC", zip=54321>
*
* Raises NameError if +name+ is not the name of a member.
*
* With integer argument +n+ given, assigns the given +value+
* to the +n+-th member if +n+ is in range;
* see Array@Array+Indexes:
*
* joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345)
* joe[2] = 54321 # => 54321
* joe[-3] = 'Joseph Smith' # => "Joseph Smith"
* joe # => #<struct Customer name="Joseph Smith", address="123 Maple, Anytown NC", zip=54321>
*
* Raises IndexError if +n+ is out of range.
*
*/
VALUE
rb_struct_aset(VALUE s, VALUE idx, VALUE val)
{
int i = rb_struct_pos(s, &idx);
if (i < 0) invalid_struct_pos(s, idx);
rb_struct_modify(s);
RSTRUCT_SET(s, i, val);
return val;
}
FUNC_MINIMIZED(VALUE rb_struct_lookup(VALUE s, VALUE idx));
NOINLINE(static VALUE rb_struct_lookup_default(VALUE s, VALUE idx, VALUE notfound));
VALUE
rb_struct_lookup(VALUE s, VALUE idx)
{
return rb_struct_lookup_default(s, idx, Qnil);
}
static VALUE
rb_struct_lookup_default(VALUE s, VALUE idx, VALUE notfound)
{
int i = rb_struct_pos(s, &idx);
if (i < 0) return notfound;
return RSTRUCT_GET(s, i);
}
static VALUE
struct_entry(VALUE s, long n)
{
return rb_struct_aref(s, LONG2NUM(n));
}
/*
* call-seq:
* values_at(*integers) -> array
* values_at(integer_range) -> array
*
* Returns an array of values from +self+.
*
* With integer arguments +integers+ given,
* returns an array containing each value given by one of +integers+:
*
* Customer = Struct.new(:name, :address, :zip)
* joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345)
* joe.values_at(0, 2) # => ["Joe Smith", 12345]
* joe.values_at(2, 0) # => [12345, "Joe Smith"]
* joe.values_at(2, 1, 0) # => [12345, "123 Maple, Anytown NC", "Joe Smith"]
* joe.values_at(0, -3) # => ["Joe Smith", "Joe Smith"]
*
* Raises IndexError if any of +integers+ is out of range;
* see Array@Array+Indexes.
*
* With integer range argument +integer_range+ given,
* returns an array containing each value given by the elements of the range;
* fills with +nil+ values for range elements larger than the structure:
*
* joe.values_at(0..2)
* # => ["Joe Smith", "123 Maple, Anytown NC", 12345]
* joe.values_at(-3..-1)
* # => ["Joe Smith", "123 Maple, Anytown NC", 12345]
* joe.values_at(1..4) # => ["123 Maple, Anytown NC", 12345, nil, nil]
*
* Raises RangeError if any element of the range is negative and out of range;
* see Array@Array+Indexes.
*
*/
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:
* select {|value| ... } -> array
* select -> enumerator
*
* With a block given, returns an array of values from +self+
* for which the block returns a truthy value:
*
* Customer = Struct.new(:name, :address, :zip)
* joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345)
* a = joe.select {|value| value.is_a?(String) }
* a # => ["Joe Smith", "123 Maple, Anytown NC"]
* a = joe.select {|value| value.is_a?(Integer) }
* a # => [12345]
*
* With no block given, returns an Enumerator.
*
* Struct#filter is an alias for Struct#select.
*/
static VALUE
rb_struct_select(int argc, VALUE *argv, VALUE s)
{
VALUE result;
long i;
rb_check_arity(argc, 0, 0);
RETURN_SIZED_ENUMERATOR(s, 0, 0, struct_enum_size);
result = rb_ary_new();
for (i = 0; i < RSTRUCT_LEN(s); i++) {
if (RTEST(rb_yield(RSTRUCT_GET(s, i)))) {
rb_ary_push(result, RSTRUCT_GET(s, i));
}
}
return result;
}
static VALUE
recursive_equal(VALUE s, VALUE s2, int recur)
{
long i, len;
if (recur) return Qtrue; /* Subtle! */
len = RSTRUCT_LEN(s);
for (i=0; i<len; i++) {
if (!rb_equal(RSTRUCT_GET(s, i), RSTRUCT_GET(s2, i))) return Qfalse;
}
return Qtrue;
}
/*
* call-seq:
* self == other -> true or false
*
* Returns +true+ if and only if the following are true; otherwise returns +false+:
*
* - <tt>other.class == self.class</tt>.
* - For each member name +name+, <tt>other.name == self.name</tt>.
*
* Examples:
*
* Customer = Struct.new(:name, :address, :zip)
* joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345)
* joe_jr = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345)
* joe_jr == joe # => true
* joe_jr[:name] = 'Joe Smith, Jr.'
* # => "Joe Smith, Jr."
* joe_jr == joe # => false
*/
static VALUE
rb_struct_equal(VALUE s, VALUE s2)
{
if (s == s2) return Qtrue;
if (!RB_TYPE_P(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 */
}
return rb_exec_recursive_paired(recursive_equal, s, s2, s2);
}
/*
* call-seq:
* hash -> integer
*
* Returns the integer hash value for +self+.
*
* Two structs of the same class and with the same content
* will have the same hash code (and will compare using Struct#eql?):
*
* Customer = Struct.new(:name, :address, :zip)
* joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345)
* joe_jr = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345)
* joe.hash == joe_jr.hash # => true
* joe_jr[:name] = 'Joe Smith, Jr.'
* joe.hash == joe_jr.hash # => false
*
* Related: Object#hash.
*/
static VALUE
rb_struct_hash(VALUE s)
{
long i, len;
st_index_t h;
VALUE n;
h = rb_hash_start(rb_hash(rb_obj_class(s)));
len = RSTRUCT_LEN(s);
for (i = 0; i < len; i++) {
n = rb_hash(RSTRUCT_GET(s, i));
h = rb_hash_uint(h, NUM2LONG(n));
}
h = rb_hash_end(h);
return ST2FIX(h);
}
static VALUE
recursive_eql(VALUE s, VALUE s2, int recur)
{
long i, len;
if (recur) return Qtrue; /* Subtle! */
len = RSTRUCT_LEN(s);
for (i=0; i<len; i++) {
if (!rb_eql(RSTRUCT_GET(s, i), RSTRUCT_GET(s2, i))) return Qfalse;
}
return Qtrue;
}
/*
* call-seq:
* eql?(other) -> true or false
*
* Returns +true+ if and only if the following are true; otherwise returns +false+:
*
* - <tt>other.class == self.class</tt>.
* - For each member name +name+, <tt>other.name.eql?(self.name)</tt>.
*
* Customer = Struct.new(:name, :address, :zip)
* joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345)
* joe_jr = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345)
* joe_jr.eql?(joe) # => true
* joe_jr[:name] = 'Joe Smith, Jr.'
* joe_jr.eql?(joe) # => false
*
* Related: Object#==.
*/
static VALUE
rb_struct_eql(VALUE s, VALUE s2)
{
if (s == s2) return Qtrue;
if (!RB_TYPE_P(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 */
}
return rb_exec_recursive_paired(recursive_eql, s, s2, s2);
}
/*
* call-seq:
* size -> integer
*
* Returns the number of members.
*
* Customer = Struct.new(:name, :address, :zip)
* joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345)
* joe.size #=> 3
*
* Struct#length is an alias for Struct#size.
*/
VALUE
rb_struct_size(VALUE s)
{
return LONG2FIX(RSTRUCT_LEN(s));
}
/*
* call-seq:
* dig(name, *identifiers) -> object
* dig(n, *identifiers) -> object
*
* Finds and returns an object among nested objects.
* The nested objects may be instances of various classes.
* See {Dig Methods}[rdoc-ref:dig_methods.rdoc].
*
*
* Given symbol or string argument +name+,
* returns the object that is specified by +name+ and +identifiers+:
*
* Foo = Struct.new(:a)
* f = Foo.new(Foo.new({b: [1, 2, 3]}))
* f.dig(:a) # => #<struct Foo a={:b=>[1, 2, 3]}>
* f.dig(:a, :a) # => {:b=>[1, 2, 3]}
* f.dig(:a, :a, :b) # => [1, 2, 3]
* f.dig(:a, :a, :b, 0) # => 1
* f.dig(:b, 0) # => nil
*
* Given integer argument +n+,
* returns the object that is specified by +n+ and +identifiers+:
*
* f.dig(0) # => #<struct Foo a={:b=>[1, 2, 3]}>
* f.dig(0, 0) # => {:b=>[1, 2, 3]}
* f.dig(0, 0, :b) # => [1, 2, 3]
* f.dig(0, 0, :b, 0) # => 1
* f.dig(:b, 0) # => nil
*
*/
static VALUE
rb_struct_dig(int argc, VALUE *argv, VALUE self)
{
rb_check_arity(argc, 1, UNLIMITED_ARGUMENTS);
self = rb_struct_lookup(self, *argv);
if (!--argc) return self;
++argv;
return rb_obj_dig(argc, argv, self, Qnil);
}
/*
* Document-class: Struct
*
* \Class \Struct provides a convenient way to create a simple class
* that can store and fetch values.
*
* This example creates a subclass of +Struct+, <tt>Struct::Customer</tt>;
* the first argument, a string, is the name of the subclass;
* the other arguments, symbols, determine the _members_ of the new subclass.
*
* Customer = Struct.new('Customer', :name, :address, :zip)
* Customer.name # => "Struct::Customer"
* Customer.class # => Class
* Customer.superclass # => Struct
*
* Corresponding to each member are two methods, a writer and a reader,
* that store and fetch values:
*
* methods = Customer.instance_methods false
* methods # => [:zip, :address=, :zip=, :address, :name, :name=]
*
* An instance of the subclass may be created,
* and its members assigned values, via method <tt>::new</tt>:
*
* joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345)
* joe # => #<struct Struct::Customer name="Joe Smith", address="123 Maple, Anytown NC", zip=12345>
*
* The member values may be managed thus:
*
* joe.name # => "Joe Smith"
* joe.name = 'Joseph Smith'
* joe.name # => "Joseph Smith"
*
* And thus; note that member name may be expressed as either a string or a symbol:
*
* joe[:name] # => "Joseph Smith"
* joe[:name] = 'Joseph Smith, Jr.'
* joe['name'] # => "Joseph Smith, Jr."
*
* See Struct::new.
*
* == What's Here
*
* First, what's elsewhere. \Class \Struct:
*
* - Inherits from {class Object}[rdoc-ref:Object@What-27s+Here].
* - Includes {module Enumerable}[rdoc-ref:Enumerable@What-27s+Here],
* which provides dozens of additional methods.
*
* Here, class \Struct provides methods that are useful for:
*
* - {Creating a Struct Subclass}[rdoc-ref:Struct@Methods+for+Creating+a+Struct+Subclass]
* - {Querying}[rdoc-ref:Struct@Methods+for+Querying]
* - {Comparing}[rdoc-ref:Struct@Methods+for+Comparing]
* - {Fetching}[rdoc-ref:Struct@Methods+for+Fetching]
* - {Assigning}[rdoc-ref:Struct@Methods+for+Assigning]
* - {Iterating}[rdoc-ref:Struct@Methods+for+Iterating]
* - {Converting}[rdoc-ref:Struct@Methods+for+Converting]
*
* === Methods for Creating a Struct Subclass
*
* - ::new: Returns a new subclass of \Struct.
*
* === Methods for Querying
*
* - #hash: Returns the integer hash code.
* - #length, #size: Returns the number of members.
*
* === Methods for Comparing
*
* - #==: Returns whether a given object is equal to +self+, using <tt>==</tt>
* to compare member values.
* - #eql?: Returns whether a given object is equal to +self+,
* using <tt>eql?</tt> to compare member values.
*
* === Methods for Fetching
*
* - #[]: Returns the value associated with a given member name.
* - #to_a, #values, #deconstruct: Returns the member values in +self+ as an array.
* - #deconstruct_keys: Returns a hash of the name/value pairs
* for given member names.
* - #dig: Returns the object in nested objects that is specified
* by a given member name and additional arguments.
* - #members: Returns an array of the member names.
* - #select, #filter: Returns an array of member values from +self+,
* as selected by the given block.
* - #values_at: Returns an array containing values for given member names.
*
* === Methods for Assigning
*
* - #[]=: Assigns a given value to a given member name.
*
* === Methods for Iterating
*
* - #each: Calls a given block with each member name.
* - #each_pair: Calls a given block with each member name/value pair.
*
* === Methods for Converting
*
* - #inspect, #to_s: Returns a string representation of +self+.
* - #to_h: Returns a hash of the member name/value pairs in +self+.
*
*/
void
InitVM_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);
#if 0 /* for RDoc */
rb_define_singleton_method(rb_cStruct, "keyword_init?", rb_struct_s_keyword_init_p, 0);
rb_define_singleton_method(rb_cStruct, "members", rb_struct_s_members_m, 0);
#endif
rb_define_method(rb_cStruct, "initialize", rb_struct_initialize_m, -1);
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, "inspect", rb_struct_inspect, 0);
rb_define_alias(rb_cStruct, "to_s", "inspect");
rb_define_method(rb_cStruct, "to_a", rb_struct_to_a, 0);
rb_define_method(rb_cStruct, "to_h", rb_struct_to_h, 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, "filter", 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);
rb_define_method(rb_cStruct, "dig", rb_struct_dig, -1);
rb_define_method(rb_cStruct, "deconstruct", rb_struct_to_a, 0);
rb_define_method(rb_cStruct, "deconstruct_keys", rb_struct_deconstruct_keys, 1);
}
#undef rb_intern
void
Init_Struct(void)
{
id_members = rb_intern("__members__");
id_back_members = rb_intern("__members_back__");
id_keyword_init = rb_intern("__keyword_init__");
InitVM(Struct);
}
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