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
which included commits to RCS files with non-trunk default branches. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@12 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
598 lines
11 KiB
C
598 lines
11 KiB
C
/************************************************
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class.c -
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$Author$
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$Date$
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created at: Tue Aug 10 15:05:44 JST 1993
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Copyright (C) 1993-1995 Yukihiro Matsumoto
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************************************************/
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#include "ruby.h"
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#include "node.h"
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#include "st.h"
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struct st_table *new_idhash();
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extern st_table *rb_class_tbl;
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extern VALUE cClass;
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extern VALUE cModule;
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VALUE
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class_new(super)
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VALUE super;
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{
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NEWOBJ(klass, struct RClass);
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OBJSETUP(klass, cClass, T_CLASS);
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klass->super = super;
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klass->iv_tbl = 0;
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klass->m_tbl = 0; /* safe GC */
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klass->m_tbl = new_idhash();
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return (VALUE)klass;
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}
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VALUE
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singleton_class_new(super)
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VALUE super;
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{
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VALUE klass = class_new(super);
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FL_SET(klass, FL_SINGLETON);
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return klass;
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}
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static int
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clone_method(mid, body, tbl)
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ID mid;
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NODE *body;
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st_table *tbl;
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{
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st_insert(tbl, mid, NEW_METHOD(body->nd_body, body->nd_noex));
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return ST_CONTINUE;
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}
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VALUE
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singleton_class_clone(klass)
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VALUE klass;
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{
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if (!FL_TEST(klass, FL_SINGLETON))
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return klass;
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else {
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/* copy singleton(unnamed) class */
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NEWOBJ(clone, struct RClass);
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CLONESETUP(clone, klass);
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clone->super = RCLASS(klass)->super;
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clone->iv_tbl = 0;
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clone->m_tbl = 0;
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clone->m_tbl = new_idhash();
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st_foreach(RCLASS(klass)->m_tbl, clone_method, clone->m_tbl);
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FL_SET(clone, FL_SINGLETON);
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return (VALUE)clone;
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}
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}
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void
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singleton_class_attached(klass, obj)
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VALUE klass, obj;
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{
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if (FL_TEST(klass, FL_SINGLETON))
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rb_iv_set(klass, "__attached__", obj);
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}
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VALUE
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rb_define_class_id(id, super)
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ID id;
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VALUE super;
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{
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VALUE klass;
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if (!super) super = cObject;
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klass = class_new(super);
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rb_name_class(klass, id);
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/* make metaclass */
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RBASIC(klass)->class = singleton_class_new(RBASIC(super)->class);
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singleton_class_attached(RBASIC(klass)->class, klass);
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rb_funcall(super, rb_intern("inherited"), 1, klass);
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return (VALUE)klass;
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}
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VALUE
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rb_define_class(name, super)
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char *name;
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VALUE super;
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{
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VALUE klass;
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ID id;
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id = rb_intern(name);
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klass = rb_define_class_id(id, super);
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st_add_direct(rb_class_tbl, id, klass);
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return klass;
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}
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VALUE
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rb_define_class_under(under, name, super)
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VALUE under;
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char *name;
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VALUE super;
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{
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VALUE klass;
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ID id;
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id = rb_intern(name);
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klass = rb_define_class_id(id, super);
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rb_const_set(under, id, klass);
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rb_set_class_path(klass, under, name);
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return klass;
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}
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VALUE
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module_new()
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{
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NEWOBJ(mdl, struct RClass);
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OBJSETUP(mdl, cModule, T_MODULE);
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mdl->super = 0;
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mdl->iv_tbl = 0;
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mdl->m_tbl = 0;
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mdl->m_tbl = new_idhash();
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return (VALUE)mdl;
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}
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VALUE
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rb_define_module_id(id)
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ID id;
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{
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extern st_table *rb_class_tbl;
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VALUE mdl = module_new();
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rb_name_class(mdl, id);
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return mdl;
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}
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VALUE
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rb_define_module(name)
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char *name;
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{
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VALUE module;
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ID id;
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id = rb_intern(name);
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module = rb_define_module_id(id);
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st_add_direct(rb_class_tbl, id, module);
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return module;
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}
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VALUE
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rb_define_module_under(under, name)
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VALUE under;
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char *name;
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{
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VALUE module;
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ID id;
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id = rb_intern(name);
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module = rb_define_module_id(id);
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rb_const_set(under, id, module);
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rb_set_class_path(module, under, name);
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return module;
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}
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static VALUE
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include_class_new(module, super)
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VALUE module, super;
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{
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NEWOBJ(klass, struct RClass);
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OBJSETUP(klass, cClass, T_ICLASS);
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klass->m_tbl = RCLASS(module)->m_tbl;
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klass->iv_tbl = RCLASS(module)->iv_tbl;
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klass->super = super;
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if (TYPE(module) == T_ICLASS) {
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RBASIC(klass)->class = RBASIC(module)->class;
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}
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else {
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RBASIC(klass)->class = module;
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}
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return (VALUE)klass;
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}
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void
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rb_include_module(klass, module)
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VALUE klass, module;
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{
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VALUE p;
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if (NIL_P(module)) return;
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switch (TYPE(module)) {
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case T_MODULE:
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case T_CLASS:
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break;
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default:
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Check_Type(module, T_MODULE);
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}
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if (klass == module) return;
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rb_clear_cache();
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while (module) {
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/* ignore if the module included already in superclasses */
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for (p = RCLASS(klass)->super; p; p = RCLASS(p)->super) {
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if (BUILTIN_TYPE(p) == T_ICLASS &&
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RCLASS(p)->m_tbl == RCLASS(module)->m_tbl)
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return;
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}
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RCLASS(klass)->super =
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include_class_new(module, RCLASS(klass)->super);
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klass = RCLASS(klass)->super;
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module = RCLASS(module)->super;
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}
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}
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VALUE
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mod_included_modules(mod)
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VALUE mod;
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{
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VALUE ary = ary_new();
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VALUE p;
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for (p = RCLASS(mod)->super; p; p = RCLASS(p)->super) {
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if (BUILTIN_TYPE(p) == T_ICLASS) {
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ary_push(ary, RBASIC(p)->class);
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}
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}
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return ary;
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}
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VALUE
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mod_ancestors(mod)
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VALUE mod;
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{
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VALUE ary = ary_new();
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VALUE p;
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for (p = mod; p; p = RCLASS(p)->super) {
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if (BUILTIN_TYPE(p) == T_ICLASS) {
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ary_push(ary, RBASIC(p)->class);
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}
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else {
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ary_push(ary, p);
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}
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}
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return ary;
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}
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static int
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ins_methods_i(key, body, ary)
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ID key;
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NODE *body;
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VALUE ary;
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{
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if (!body->nd_noex) {
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VALUE name = str_new2(rb_id2name(key));
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if (!ary_includes(ary, name)) {
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if (!body->nd_body) {
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ary_push(ary, Qnil);
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}
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ary_push(ary, name);
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}
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}
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else if (nd_type(body->nd_body) == NODE_ZSUPER) {
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ary_push(ary, Qnil);
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ary_push(ary, str_new2(rb_id2name(key)));
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}
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return ST_CONTINUE;
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}
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static int
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ins_methods_priv_i(key, body, ary)
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ID key;
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NODE *body;
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VALUE ary;
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{
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if (!body->nd_body) {
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ary_push(ary, Qnil);
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ary_push(ary, str_new2(rb_id2name(key)));
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}
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else if (body->nd_noex) {
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VALUE name = str_new2(rb_id2name(key));
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if (!ary_includes(ary, name)) {
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ary_push(ary, name);
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}
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}
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else if (nd_type(body->nd_body) == NODE_ZSUPER) {
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ary_push(ary, Qnil);
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ary_push(ary, str_new2(rb_id2name(key)));
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}
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return ST_CONTINUE;
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}
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static VALUE
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method_list(mod, option, func)
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VALUE mod;
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int option;
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int (*func)();
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{
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VALUE ary;
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VALUE klass;
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VALUE *p, *q, *pend;
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ary = ary_new();
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for (klass = mod; klass; klass = RCLASS(klass)->super) {
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st_foreach(RCLASS(klass)->m_tbl, func, ary);
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if (!option) break;
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}
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p = q = RARRAY(ary)->ptr; pend = p + RARRAY(ary)->len;
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while (p < pend) {
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if (*p == Qnil) {
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p+=2;
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continue;
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}
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*q++ = *p++;
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}
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RARRAY(ary)->len = q - RARRAY(ary)->ptr;
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return ary;
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}
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VALUE
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class_instance_methods(argc, argv, mod)
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int argc;
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VALUE *argv;
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VALUE mod;
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{
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VALUE option;
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rb_scan_args(argc, argv, "01", &option);
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return method_list(mod, RTEST(option), ins_methods_i);
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}
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VALUE
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class_private_instance_methods(argc, argv, mod)
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int argc;
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VALUE *argv;
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VALUE mod;
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{
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VALUE option;
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rb_scan_args(argc, argv, "01", &option);
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return method_list(mod, RTEST(option), ins_methods_priv_i);
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}
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VALUE
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obj_singleton_methods(obj)
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VALUE obj;
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{
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VALUE ary;
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VALUE klass;
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VALUE *p, *q, *pend;
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ary = ary_new();
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klass = CLASS_OF(obj);
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while (klass && FL_TEST(klass, FL_SINGLETON)) {
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st_foreach(RCLASS(klass)->m_tbl, ins_methods_i, ary);
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klass = RCLASS(klass)->super;
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}
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p = q = RARRAY(ary)->ptr; pend = p + RARRAY(ary)->len;
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while (p < pend) {
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if (*p == Qnil) {
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p+=2;
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continue;
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}
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*q++ = *p++;
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}
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RARRAY(ary)->len = q - RARRAY(ary)->ptr;
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return ary;
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}
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void
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rb_define_method_id(klass, name, func, argc)
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VALUE klass;
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ID name;
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VALUE (*func)();
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int argc;
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{
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rb_add_method(klass, name, NEW_CFUNC(func, argc), NOEX_PUBLIC);
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}
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void
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rb_define_method(klass, name, func, argc)
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VALUE klass;
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char *name;
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VALUE (*func)();
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int argc;
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{
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rb_add_method(klass, rb_intern(name), NEW_CFUNC(func, argc), NOEX_PUBLIC);
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}
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void
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rb_undef_method(klass, name)
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VALUE klass;
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char *name;
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{
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rb_add_method(klass, rb_intern(name), 0, NOEX_PUBLIC);
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}
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void
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rb_define_private_method(klass, name, func, argc)
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VALUE klass;
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char *name;
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VALUE (*func)();
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int argc;
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{
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rb_add_method(klass, rb_intern(name), NEW_CFUNC(func, argc), NOEX_PRIVATE);
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}
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VALUE
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rb_singleton_class(obj)
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VALUE obj;
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{
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if (rb_special_const_p(obj)) {
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TypeError("cannot define singleton");
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}
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if (FL_TEST(RBASIC(obj)->class, FL_SINGLETON)) {
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return (VALUE)RBASIC(obj)->class;
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}
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RBASIC(obj)->class = singleton_class_new(RBASIC(obj)->class);
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singleton_class_attached(RBASIC(obj)->class, obj);
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return RBASIC(obj)->class;
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}
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void
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rb_define_singleton_method(obj, name, func, argc)
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VALUE obj;
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char *name;
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VALUE (*func)();
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int argc;
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{
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rb_define_method(rb_singleton_class(obj), name, func, argc);
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}
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void
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rb_define_module_function(module, name, func, argc)
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VALUE module;
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char *name;
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VALUE (*func)();
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int argc;
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{
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rb_define_private_method(module, name, func, argc);
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rb_define_singleton_method(module, name, func, argc);
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}
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extern VALUE mKernel;
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void
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rb_define_global_function(name, func, argc)
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char *name;
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VALUE (*func)();
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int argc;
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{
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rb_define_private_method(mKernel, name, func, argc);
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}
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void
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rb_define_alias(klass, name1, name2)
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VALUE klass;
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char *name1, *name2;
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{
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rb_alias(klass, rb_intern(name1), rb_intern(name2));
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}
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void
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rb_define_attr(klass, id, read, write)
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VALUE klass;
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ID id;
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int read, write;
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{
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char *name;
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char *buf;
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ID attr, attreq, attriv;
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name = rb_id2name(id);
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attr = rb_intern(name);
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buf = ALLOCA_N(char,strlen(name)+2);
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sprintf(buf, "%s=", name);
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attreq = rb_intern(buf);
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sprintf(buf, "@%s", name);
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attriv = rb_intern(buf);
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if (read) {
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rb_add_method(klass, attr, NEW_IVAR(attriv), 0);
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}
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if (write) {
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rb_add_method(klass, attreq, NEW_ATTRSET(attriv), 0);
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}
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}
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#include <varargs.h>
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#include <ctype.h>
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int
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rb_scan_args(argc, argv, fmt, va_alist)
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int argc;
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VALUE *argv;
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char *fmt;
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va_dcl
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{
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int n, i;
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char *p = fmt;
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VALUE *var;
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va_list vargs;
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va_start(vargs);
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if (*p == '*') {
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var = va_arg(vargs, VALUE*);
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*var = ary_new4(argc, argv);
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return argc;
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}
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if (isdigit(*p)) {
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n = *p - '0';
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if (n > argc)
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ArgError("Wrong # of arguments (%d for %d)", argc, n);
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for (i=0; i<n; i++) {
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var = va_arg(vargs, VALUE*);
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*var = argv[i];
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}
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p++;
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}
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else {
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goto error;
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}
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if (isdigit(*p)) {
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n = i + *p - '0';
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for (; i<n; i++) {
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var = va_arg(vargs, VALUE*);
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if (argc > i) {
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*var = argv[i];
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}
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else {
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*var = Qnil;
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}
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}
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p++;
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}
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if(*p == '*') {
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var = va_arg(vargs, VALUE*);
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if (argc > i) {
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*var = ary_new4(argc-i, argv+i);
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}
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else {
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*var = ary_new();
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}
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}
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else if (*p == '\0') {
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if (argc > i) {
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ArgError("Wrong # of arguments(%d for %d)", argc, i);
|
|
}
|
|
}
|
|
else {
|
|
goto error;
|
|
}
|
|
|
|
va_end(vargs);
|
|
return argc;
|
|
|
|
error:
|
|
Fatal("bad scan arg format: %s", fmt);
|
|
return 0;
|
|
}
|