diff options
Diffstat (limited to 'trunk/vm_method.c')
| -rw-r--r-- | trunk/vm_method.c | 1154 |
1 files changed, 0 insertions, 1154 deletions
diff --git a/trunk/vm_method.c b/trunk/vm_method.c deleted file mode 100644 index 0254741b8a..0000000000 --- a/trunk/vm_method.c +++ /dev/null @@ -1,1154 +0,0 @@ -/* -*-c-*- */ -/* - * This file is included by vm_eval.c - */ - -#define CACHE_SIZE 0x800 -#define CACHE_MASK 0x7ff -#define EXPR1(c,m) ((((c)>>3)^(m))&CACHE_MASK) - -static void rb_vm_check_redefinition_opt_method(const NODE *node); - -static ID __send__, object_id; -static ID removed, singleton_removed, undefined, singleton_undefined; -static ID eqq, each, aref, aset, match, missing; -static ID added, singleton_added; - -struct cache_entry { /* method hash table. */ - ID mid; /* method's id */ - ID mid0; /* method's original id */ - VALUE klass; /* receiver's class */ - VALUE oklass; /* original's class */ - NODE *method; -}; - -static struct cache_entry cache[CACHE_SIZE]; -#define ruby_running (GET_VM()->running) -/* int ruby_running = 0; */ - -void -rb_clear_cache(void) -{ - struct cache_entry *ent, *end; - - rb_vm_change_state(); - - if (!ruby_running) - return; - ent = cache; - end = ent + CACHE_SIZE; - while (ent < end) { - ent->mid = 0; - ent++; - } -} - -static void -rb_clear_cache_for_undef(VALUE klass, ID id) -{ - struct cache_entry *ent, *end; - - rb_vm_change_state(); - - if (!ruby_running) - return; - ent = cache; - end = ent + CACHE_SIZE; - while (ent < end) { - if (ent->oklass == klass && ent->mid == id) { - ent->mid = 0; - } - ent++; - } -} - -static void -rb_clear_cache_by_id(ID id) -{ - struct cache_entry *ent, *end; - - rb_vm_change_state(); - - if (!ruby_running) - return; - ent = cache; - end = ent + CACHE_SIZE; - while (ent < end) { - if (ent->mid == id) { - ent->mid = 0; - } - ent++; - } -} - -void -rb_clear_cache_by_class(VALUE klass) -{ - struct cache_entry *ent, *end; - - rb_vm_change_state(); - - if (!ruby_running) - return; - ent = cache; - end = ent + CACHE_SIZE; - while (ent < end) { - if (ent->klass == klass || ent->oklass == klass) { - ent->mid = 0; - } - ent++; - } -} - -void -rb_add_method(VALUE klass, ID mid, NODE * node, int noex) -{ - NODE *body; - - if (NIL_P(klass)) { - klass = rb_cObject; - } - if (rb_safe_level() >= 4 && - (klass == rb_cObject || !OBJ_UNTRUSTED(klass))) { - rb_raise(rb_eSecurityError, "Insecure: can't define method"); - } - if (!FL_TEST(klass, FL_SINGLETON) && - node && nd_type(node) != NODE_ZSUPER && - (mid == rb_intern("initialize") || mid == rb_intern("initialize_copy"))) { - noex = NOEX_PRIVATE | noex; - } - else if (FL_TEST(klass, FL_SINGLETON) && node - && nd_type(node) == NODE_CFUNC && mid == rb_intern("allocate")) { - rb_warn - ("defining %s.allocate is deprecated; use rb_define_alloc_func()", - rb_class2name(rb_iv_get(klass, "__attached__"))); - mid = ID_ALLOCATOR; - } - if (OBJ_FROZEN(klass)) { - rb_error_frozen("class/module"); - } - rb_clear_cache_by_id(mid); - - /* - * NODE_METHOD (NEW_METHOD(body, klass, vis)): - * nd_body : method body // (2) // mark - * nd_clss : klass // (1) // mark - * nd_noex : visibility // (3) - * - * NODE_FBODY (NEW_FBODY(method, alias)): - * nd_body : method (NODE_METHOD) // (2) // mark - * nd_oid : original id // (1) - * nd_cnt : alias count // (3) - */ - if (node) { - body = NEW_FBODY(NEW_METHOD(node, klass, NOEX_WITH_SAFE(noex)), 0); - } - else { - body = 0; - } - - { - /* check re-definition */ - st_data_t data; - NODE *old_node; - - if (st_lookup(RCLASS_M_TBL(klass), mid, &data)) { - old_node = (NODE *)data; - if (old_node) { - if (nd_type(old_node->nd_body->nd_body) == NODE_CFUNC) { - rb_vm_check_redefinition_opt_method(old_node); - } - if (RTEST(ruby_verbose) && node && old_node->nd_cnt == 0 && old_node->nd_body) { - rb_warning("method redefined; discarding old %s", rb_id2name(mid)); - } - } - } - if (klass == rb_cObject && node && mid == idInitialize) { - rb_warn("redefining Object#initialize may cause infinite loop"); - } - - if (mid == object_id || mid == __send__) { - if (node && nd_type(node) == RUBY_VM_METHOD_NODE) { - rb_warn("redefining `%s' may cause serious problem", - rb_id2name(mid)); - } - } - } - - st_insert(RCLASS_M_TBL(klass), mid, (st_data_t) body); - - if (node && mid != ID_ALLOCATOR && ruby_running) { - if (FL_TEST(klass, FL_SINGLETON)) { - rb_funcall(rb_iv_get(klass, "__attached__"), singleton_added, 1, - ID2SYM(mid)); - } - else { - rb_funcall(klass, added, 1, ID2SYM(mid)); - } - } -} - -void -rb_define_alloc_func(VALUE klass, VALUE (*func)(VALUE)) -{ - Check_Type(klass, T_CLASS); - rb_add_method(rb_singleton_class(klass), ID_ALLOCATOR, NEW_CFUNC(func, 0), - NOEX_PRIVATE); -} - -void -rb_undef_alloc_func(VALUE klass) -{ - Check_Type(klass, T_CLASS); - rb_add_method(rb_singleton_class(klass), ID_ALLOCATOR, 0, NOEX_UNDEF); -} - -rb_alloc_func_t -rb_get_alloc_func(VALUE klass) -{ - NODE *n; - Check_Type(klass, T_CLASS); - n = rb_method_node(CLASS_OF(klass), ID_ALLOCATOR); - if (!n) return 0; - if (nd_type(n) != NODE_METHOD) return 0; - n = n->nd_body; - if (nd_type(n) != NODE_CFUNC) return 0; - return (rb_alloc_func_t)n->nd_cfnc; -} - -static NODE * -search_method(VALUE klass, ID id, VALUE *klassp) -{ - st_data_t body; - - if (!klass) { - return 0; - } - - while (!st_lookup(RCLASS_M_TBL(klass), id, &body)) { - klass = RCLASS_SUPER(klass); - if (!klass) - return 0; - } - - if (klassp) { - *klassp = klass; - } - - return (NODE *)body; -} - -/* - * search method body (NODE_METHOD) - * with : klass and id - * without : method cache - * - * if you need method node with method cache, use - * rb_method_node() - */ -NODE * -rb_get_method_body(VALUE klass, ID id, ID *idp) -{ - NODE *volatile fbody, *body; - NODE *method; - - if ((fbody = search_method(klass, id, 0)) == 0 || !fbody->nd_body) { - /* store empty info in cache */ - struct cache_entry *ent; - ent = cache + EXPR1(klass, id); - ent->klass = klass; - ent->mid = ent->mid0 = id; - ent->method = 0; - ent->oklass = 0; - return 0; - } - - method = fbody->nd_body; - - if (ruby_running) { - /* store in cache */ - struct cache_entry *ent; - ent = cache + EXPR1(klass, id); - ent->klass = klass; - ent->mid = id; - ent->mid0 = fbody->nd_oid; - ent->method = body = method; - ent->oklass = method->nd_clss; - } - else { - body = method; - } - - if (idp) { - *idp = fbody->nd_oid; - } - - return body; -} - -NODE * -rb_method_node(VALUE klass, ID id) -{ - struct cache_entry *ent; - - ent = cache + EXPR1(klass, id); - if (ent->mid == id && ent->klass == klass && ent->method) { - return ent->method; - } - - return rb_get_method_body(klass, id, 0); -} - -static void -remove_method(VALUE klass, ID mid) -{ - st_data_t data; - NODE *body = 0; - - if (klass == rb_cObject) { - rb_secure(4); - } - if (rb_safe_level() >= 4 && !OBJ_UNTRUSTED(klass)) { - rb_raise(rb_eSecurityError, "Insecure: can't remove method"); - } - if (OBJ_FROZEN(klass)) - rb_error_frozen("class/module"); - if (mid == object_id || mid == __send__ || mid == idInitialize) { - rb_warn("removing `%s' may cause serious problem", rb_id2name(mid)); - } - if (st_lookup(RCLASS_M_TBL(klass), mid, &data)) { - body = (NODE *)data; - if (!body || !body->nd_body) body = 0; - else { - st_delete(RCLASS_M_TBL(klass), &mid, &data); - } - } - if (!body) { - rb_name_error(mid, "method `%s' not defined in %s", - rb_id2name(mid), rb_class2name(klass)); - } - - if (nd_type(body->nd_body->nd_body) == NODE_CFUNC) { - rb_vm_check_redefinition_opt_method(body); - } - - rb_clear_cache_for_undef(klass, mid); - if (FL_TEST(klass, FL_SINGLETON)) { - rb_funcall(rb_iv_get(klass, "__attached__"), singleton_removed, 1, - ID2SYM(mid)); - } - else { - rb_funcall(klass, removed, 1, ID2SYM(mid)); - } -} - -void -rb_remove_method(VALUE klass, const char *name) -{ - remove_method(klass, rb_intern(name)); -} - -/* - * call-seq: - * remove_method(symbol) => self - * - * Removes the method identified by _symbol_ from the current - * class. For an example, see <code>Module.undef_method</code>. - */ - -static VALUE -rb_mod_remove_method(int argc, VALUE *argv, VALUE mod) -{ - int i; - - for (i = 0; i < argc; i++) { - remove_method(mod, rb_to_id(argv[i])); - } - return mod; -} - -#undef rb_disable_super -#undef rb_enable_super - -void -rb_disable_super(VALUE klass, const char *name) -{ - /* obsolete - no use */ -} - -void -rb_enable_super(VALUE klass, const char *name) -{ - rb_warning("rb_enable_super() is obsolete"); -} - -static void -rb_export_method(VALUE klass, ID name, ID noex) -{ - NODE *fbody; - VALUE origin; - - if (klass == rb_cObject) { - rb_secure(4); - } - fbody = search_method(klass, name, &origin); - if (!fbody && TYPE(klass) == T_MODULE) { - fbody = search_method(rb_cObject, name, &origin); - } - if (!fbody || !fbody->nd_body) { - rb_print_undef(klass, name, 0); - } - if (fbody->nd_body->nd_noex != noex) { - if (nd_type(fbody->nd_body->nd_body) == NODE_CFUNC) { - rb_vm_check_redefinition_opt_method(fbody); - } - if (klass == origin) { - fbody->nd_body->nd_noex = noex; - } - else { - rb_add_method(klass, name, NEW_ZSUPER(), noex); - } - } -} - -int -rb_method_boundp(VALUE klass, ID id, int ex) -{ - NODE *method; - - if ((method = rb_method_node(klass, id)) != 0) { - if (ex && (method->nd_noex & NOEX_PRIVATE)) { - return Qfalse; - } - return Qtrue; - } - return Qfalse; -} - -void -rb_attr(VALUE klass, ID id, int read, int write, int ex) -{ - const char *name; - ID attriv; - int noex; - - if (!ex) { - noex = NOEX_PUBLIC; - } - else { - if (SCOPE_TEST(NOEX_PRIVATE)) { - noex = NOEX_PRIVATE; - rb_warning((SCOPE_CHECK(NOEX_MODFUNC)) ? - "attribute accessor as module_function" : - "private attribute?"); - } - else if (SCOPE_TEST(NOEX_PROTECTED)) { - noex = NOEX_PROTECTED; - } - else { - noex = NOEX_PUBLIC; - } - } - - if (!rb_is_local_id(id) && !rb_is_const_id(id)) { - rb_name_error(id, "invalid attribute name `%s'", rb_id2name(id)); - } - name = rb_id2name(id); - if (!name) { - rb_raise(rb_eArgError, "argument needs to be symbol or string"); - } - attriv = rb_intern_str(rb_sprintf("@%s", name)); - if (read) { - rb_add_method(klass, id, NEW_IVAR(attriv), noex); - } - if (write) { - rb_add_method(klass, rb_id_attrset(id), NEW_ATTRSET(attriv), noex); - } -} - -void -rb_undef(VALUE klass, ID id) -{ - VALUE origin; - NODE *body; - - if (rb_vm_cbase() == rb_cObject && klass == rb_cObject) { - rb_secure(4); - } - if (rb_safe_level() >= 4 && !OBJ_UNTRUSTED(klass)) { - rb_raise(rb_eSecurityError, "Insecure: can't undef `%s'", - rb_id2name(id)); - } - rb_frozen_class_p(klass); - if (id == object_id || id == __send__ || id == idInitialize) { - rb_warn("undefining `%s' may cause serious problem", rb_id2name(id)); - } - body = search_method(klass, id, &origin); - if (!body || !body->nd_body) { - const char *s0 = " class"; - VALUE c = klass; - - if (FL_TEST(c, FL_SINGLETON)) { - VALUE obj = rb_iv_get(klass, "__attached__"); - - switch (TYPE(obj)) { - case T_MODULE: - case T_CLASS: - c = obj; - s0 = ""; - } - } - else if (TYPE(c) == T_MODULE) { - s0 = " module"; - } - rb_name_error(id, "undefined method `%s' for%s `%s'", - rb_id2name(id), s0, rb_class2name(c)); - } - - rb_add_method(klass, id, 0, NOEX_PUBLIC); - - if (FL_TEST(klass, FL_SINGLETON)) { - rb_funcall(rb_iv_get(klass, "__attached__"), - singleton_undefined, 1, ID2SYM(id)); - } - else { - rb_funcall(klass, undefined, 1, ID2SYM(id)); - } -} - -/* - * call-seq: - * undef_method(symbol) => self - * - * Prevents the current class from responding to calls to the named - * method. Contrast this with <code>remove_method</code>, which deletes - * the method from the particular class; Ruby will still search - * superclasses and mixed-in modules for a possible receiver. - * - * class Parent - * def hello - * puts "In parent" - * end - * end - * class Child < Parent - * def hello - * puts "In child" - * end - * end - * - * - * c = Child.new - * c.hello - * - * - * class Child - * remove_method :hello # remove from child, still in parent - * end - * c.hello - * - * - * class Child - * undef_method :hello # prevent any calls to 'hello' - * end - * c.hello - * - * <em>produces:</em> - * - * In child - * In parent - * prog.rb:23: undefined method `hello' for #<Child:0x401b3bb4> (NoMethodError) - */ - -static VALUE -rb_mod_undef_method(int argc, VALUE *argv, VALUE mod) -{ - int i; - for (i = 0; i < argc; i++) { - rb_undef(mod, rb_to_id(argv[i])); - } - return mod; -} - -/* - * call-seq: - * mod.method_defined?(symbol) => true or false - * - * Returns +true+ if the named method is defined by - * _mod_ (or its included modules and, if _mod_ is a class, - * its ancestors). Public and protected methods are matched. - * - * module A - * def method1() end - * end - * class B - * def method2() end - * end - * class C < B - * include A - * def method3() end - * end - * - * A.method_defined? :method1 #=> true - * C.method_defined? "method1" #=> true - * C.method_defined? "method2" #=> true - * C.method_defined? "method3" #=> true - * C.method_defined? "method4" #=> false - */ - -static VALUE -rb_mod_method_defined(VALUE mod, VALUE mid) -{ - return rb_method_boundp(mod, rb_to_id(mid), 1); -} - -#define VISI_CHECK(x,f) (((x)&NOEX_MASK) == (f)) - -/* - * call-seq: - * mod.public_method_defined?(symbol) => true or false - * - * Returns +true+ if the named public method is defined by - * _mod_ (or its included modules and, if _mod_ is a class, - * its ancestors). - * - * module A - * def method1() end - * end - * class B - * protected - * def method2() end - * end - * class C < B - * include A - * def method3() end - * end - * - * A.method_defined? :method1 #=> true - * C.public_method_defined? "method1" #=> true - * C.public_method_defined? "method2" #=> false - * C.method_defined? "method2" #=> true - */ - -static VALUE -rb_mod_public_method_defined(VALUE mod, VALUE mid) -{ - ID id = rb_to_id(mid); - NODE *method; - - method = rb_method_node(mod, id); - if (method) { - if (VISI_CHECK(method->nd_noex, NOEX_PUBLIC)) - return Qtrue; - } - return Qfalse; -} - -/* - * call-seq: - * mod.private_method_defined?(symbol) => true or false - * - * Returns +true+ if the named private method is defined by - * _ mod_ (or its included modules and, if _mod_ is a class, - * its ancestors). - * - * module A - * def method1() end - * end - * class B - * private - * def method2() end - * end - * class C < B - * include A - * def method3() end - * end - * - * A.method_defined? :method1 #=> true - * C.private_method_defined? "method1" #=> false - * C.private_method_defined? "method2" #=> true - * C.method_defined? "method2" #=> false - */ - -static VALUE -rb_mod_private_method_defined(VALUE mod, VALUE mid) -{ - ID id = rb_to_id(mid); - NODE *method; - - method = rb_method_node(mod, id); - if (method) { - if (VISI_CHECK(method->nd_noex, NOEX_PRIVATE)) - return Qtrue; - } - return Qfalse; -} - -/* - * call-seq: - * mod.protected_method_defined?(symbol) => true or false - * - * Returns +true+ if the named protected method is defined - * by _mod_ (or its included modules and, if _mod_ is a - * class, its ancestors). - * - * module A - * def method1() end - * end - * class B - * protected - * def method2() end - * end - * class C < B - * include A - * def method3() end - * end - * - * A.method_defined? :method1 #=> true - * C.protected_method_defined? "method1" #=> false - * C.protected_method_defined? "method2" #=> true - * C.method_defined? "method2" #=> true - */ - -static VALUE -rb_mod_protected_method_defined(VALUE mod, VALUE mid) -{ - ID id = rb_to_id(mid); - NODE *method; - - method = rb_method_node(mod, id); - if (method) { - if (VISI_CHECK(method->nd_noex, NOEX_PROTECTED)) - return Qtrue; - } - return Qfalse; -} - -void -rb_alias(VALUE klass, ID name, ID def) -{ - NODE *orig_fbody, *node; - VALUE singleton = 0; - st_data_t data; - - rb_frozen_class_p(klass); - if (klass == rb_cObject) { - rb_secure(4); - } - orig_fbody = search_method(klass, def, 0); - if (!orig_fbody || !orig_fbody->nd_body) { - if (TYPE(klass) == T_MODULE) { - orig_fbody = search_method(rb_cObject, def, 0); - } - } - if (!orig_fbody || !orig_fbody->nd_body) { - rb_print_undef(klass, def, 0); - } - if (FL_TEST(klass, FL_SINGLETON)) { - singleton = rb_iv_get(klass, "__attached__"); - } - - orig_fbody->nd_cnt++; - - if (st_lookup(RCLASS_M_TBL(klass), name, &data)) { - node = (NODE *)data; - if (node) { - if (RTEST(ruby_verbose) && node->nd_cnt == 0 && node->nd_body) { - rb_warning("discarding old %s", rb_id2name(name)); - } - if (nd_type(node->nd_body->nd_body) == NODE_CFUNC) { - rb_vm_check_redefinition_opt_method(node); - } - } - } - - st_insert(RCLASS_M_TBL(klass), name, - (st_data_t) NEW_FBODY( - NEW_METHOD(orig_fbody->nd_body->nd_body, - orig_fbody->nd_body->nd_clss, - NOEX_WITH_SAFE(orig_fbody->nd_body->nd_noex)), def)); - - rb_clear_cache_by_id(name); - - if (!ruby_running) return; - - if (singleton) { - rb_funcall(singleton, singleton_added, 1, ID2SYM(name)); - } - else { - rb_funcall(klass, added, 1, ID2SYM(name)); - } -} - -/* - * call-seq: - * alias_method(new_name, old_name) => self - * - * Makes <i>new_name</i> a new copy of the method <i>old_name</i>. This can - * be used to retain access to methods that are overridden. - * - * module Mod - * alias_method :orig_exit, :exit - * def exit(code=0) - * puts "Exiting with code #{code}" - * orig_exit(code) - * end - * end - * include Mod - * exit(99) - * - * <em>produces:</em> - * - * Exiting with code 99 - */ - -static VALUE -rb_mod_alias_method(VALUE mod, VALUE newname, VALUE oldname) -{ - rb_alias(mod, rb_to_id(newname), rb_to_id(oldname)); - return mod; -} - -static void -secure_visibility(VALUE self) -{ - if (rb_safe_level() >= 4 && !OBJ_UNTRUSTED(self)) { - rb_raise(rb_eSecurityError, - "Insecure: can't change method visibility"); - } -} - -static void -set_method_visibility(VALUE self, int argc, VALUE *argv, ID ex) -{ - int i; - secure_visibility(self); - for (i = 0; i < argc; i++) { - rb_export_method(self, rb_to_id(argv[i]), ex); - } - rb_clear_cache_by_class(self); -} - -/* - * call-seq: - * public => self - * public(symbol, ...) => self - * - * With no arguments, sets the default visibility for subsequently - * defined methods to public. With arguments, sets the named methods to - * have public visibility. - */ - -static VALUE -rb_mod_public(int argc, VALUE *argv, VALUE module) -{ - secure_visibility(module); - if (argc == 0) { - SCOPE_SET(NOEX_PUBLIC); - } - else { - set_method_visibility(module, argc, argv, NOEX_PUBLIC); - } - return module; -} - -/* - * call-seq: - * protected => self - * protected(symbol, ...) => self - * - * With no arguments, sets the default visibility for subsequently - * defined methods to protected. With arguments, sets the named methods - * to have protected visibility. - */ - -static VALUE -rb_mod_protected(int argc, VALUE *argv, VALUE module) -{ - secure_visibility(module); - if (argc == 0) { - SCOPE_SET(NOEX_PROTECTED); - } - else { - set_method_visibility(module, argc, argv, NOEX_PROTECTED); - } - return module; -} - -/* - * call-seq: - * private => self - * private(symbol, ...) => self - * - * With no arguments, sets the default visibility for subsequently - * defined methods to private. With arguments, sets the named methods - * to have private visibility. - * - * module Mod - * def a() end - * def b() end - * private - * def c() end - * private :a - * end - * Mod.private_instance_methods #=> [:a, :c] - */ - -static VALUE -rb_mod_private(int argc, VALUE *argv, VALUE module) -{ - secure_visibility(module); - if (argc == 0) { - SCOPE_SET(NOEX_PRIVATE); - } - else { - set_method_visibility(module, argc, argv, NOEX_PRIVATE); - } - return module; -} - -/* - * call-seq: - * mod.public_class_method(symbol, ...) => mod - * - * Makes a list of existing class methods public. - */ - -static VALUE -rb_mod_public_method(int argc, VALUE *argv, VALUE obj) -{ - set_method_visibility(CLASS_OF(obj), argc, argv, NOEX_PUBLIC); - return obj; -} - -/* - * call-seq: - * mod.private_class_method(symbol, ...) => mod - * - * Makes existing class methods private. Often used to hide the default - * constructor <code>new</code>. - * - * class SimpleSingleton # Not thread safe - * private_class_method :new - * def SimpleSingleton.create(*args, &block) - * @me = new(*args, &block) if ! @me - * @me - * end - * end - */ - -static VALUE -rb_mod_private_method(int argc, VALUE *argv, VALUE obj) -{ - set_method_visibility(CLASS_OF(obj), argc, argv, NOEX_PRIVATE); - return obj; -} - -/* - * call-seq: - * public - * public(symbol, ...) - * - * With no arguments, sets the default visibility for subsequently - * defined methods to public. With arguments, sets the named methods to - * have public visibility. - */ - -static VALUE -top_public(int argc, VALUE *argv) -{ - return rb_mod_public(argc, argv, rb_cObject); -} - -static VALUE -top_private(int argc, VALUE *argv) -{ - return rb_mod_private(argc, argv, rb_cObject); -} - -/* - * call-seq: - * module_function(symbol, ...) => self - * - * Creates module functions for the named methods. These functions may - * be called with the module as a receiver, and also become available - * as instance methods to classes that mix in the module. Module - * functions are copies of the original, and so may be changed - * independently. The instance-method versions are made private. If - * used with no arguments, subsequently defined methods become module - * functions. - * - * module Mod - * def one - * "This is one" - * end - * module_function :one - * end - * class Cls - * include Mod - * def callOne - * one - * end - * end - * Mod.one #=> "This is one" - * c = Cls.new - * c.callOne #=> "This is one" - * module Mod - * def one - * "This is the new one" - * end - * end - * Mod.one #=> "This is one" - * c.callOne #=> "This is the new one" - */ - -static VALUE -rb_mod_modfunc(int argc, VALUE *argv, VALUE module) -{ - int i; - ID id; - NODE *fbody; - - if (TYPE(module) != T_MODULE) { - rb_raise(rb_eTypeError, "module_function must be called for modules"); - } - - secure_visibility(module); - if (argc == 0) { - SCOPE_SET(NOEX_MODFUNC); - return module; - } - - set_method_visibility(module, argc, argv, NOEX_PRIVATE); - - for (i = 0; i < argc; i++) { - VALUE m = module; - - id = rb_to_id(argv[i]); - for (;;) { - fbody = search_method(m, id, &m); - if (fbody == 0) { - fbody = search_method(rb_cObject, id, &m); - } - if (fbody == 0 || fbody->nd_body == 0) { - rb_bug("undefined method `%s'; can't happen", rb_id2name(id)); - } - if (nd_type(fbody->nd_body->nd_body) != NODE_ZSUPER) { - break; /* normal case: need not to follow 'super' link */ - } - m = RCLASS_SUPER(m); - if (!m) - break; - } - rb_add_method(rb_singleton_class(module), id, fbody->nd_body->nd_body, - NOEX_PUBLIC); - } - return module; -} - -int -rb_method_basic_definition_p(VALUE klass, ID id) -{ - NODE *node = rb_method_node(klass, id); - if (node && (node->nd_noex & NOEX_BASIC)) - return 1; - return 0; -} - -/* - * call-seq: - * obj.respond_to?(symbol, include_private=false) => true or false - * - * Returns +true+> if _obj_ responds to the given - * method. Private methods are included in the search only if the - * optional second parameter evaluates to +true+. - */ - -int -rb_obj_respond_to(VALUE obj, ID id, int priv) -{ - VALUE klass = CLASS_OF(obj); - - if (rb_method_basic_definition_p(klass, idRespond_to)) { - return rb_method_boundp(klass, id, !priv); - } - else { - VALUE args[2]; - int n = 0; - args[n++] = ID2SYM(id); - if (priv) - args[n++] = Qtrue; - return RTEST(rb_funcall2(obj, idRespond_to, n, args)); - } -} - -int -rb_respond_to(VALUE obj, ID id) -{ - return rb_obj_respond_to(obj, id, Qfalse); -} - -/* - * call-seq: - * obj.respond_to?(symbol, include_private=false) => true or false - * - * Returns +true+> if _obj_ responds to the given - * method. Private methods are included in the search only if the - * optional second parameter evaluates to +true+. - */ - -static VALUE -obj_respond_to(int argc, VALUE *argv, VALUE obj) -{ - VALUE mid, priv; - ID id; - - rb_scan_args(argc, argv, "11", &mid, &priv); - id = rb_to_id(mid); - if (rb_method_boundp(CLASS_OF(obj), id, !RTEST(priv))) { - return Qtrue; - } - return Qfalse; -} - -void -Init_eval_method(void) -{ -#undef rb_intern -#define rb_intern(str) rb_intern_const(str) - - rb_define_method(rb_mKernel, "respond_to?", obj_respond_to, -1); - - rb_define_private_method(rb_cModule, "remove_method", rb_mod_remove_method, -1); - rb_define_private_method(rb_cModule, "undef_method", rb_mod_undef_method, -1); - rb_define_private_method(rb_cModule, "alias_method", rb_mod_alias_method, 2); - rb_define_private_method(rb_cModule, "public", rb_mod_public, -1); - rb_define_private_method(rb_cModule, "protected", rb_mod_protected, -1); - rb_define_private_method(rb_cModule, "private", rb_mod_private, -1); - rb_define_private_method(rb_cModule, "module_function", rb_mod_modfunc, -1); - - rb_define_method(rb_cModule, "method_defined?", rb_mod_method_defined, 1); - rb_define_method(rb_cModule, "public_method_defined?", rb_mod_public_method_defined, 1); - rb_define_method(rb_cModule, "private_method_defined?", rb_mod_private_method_defined, 1); - rb_define_method(rb_cModule, "protected_method_defined?", rb_mod_protected_method_defined, 1); - rb_define_method(rb_cModule, "public_class_method", rb_mod_public_method, -1); - rb_define_method(rb_cModule, "private_class_method", rb_mod_private_method, -1); - - rb_define_singleton_method(rb_vm_top_self(), "public", top_public, -1); - rb_define_singleton_method(rb_vm_top_self(), "private", top_private, -1); - - object_id = rb_intern("object_id"); - __send__ = rb_intern("__send__"); - eqq = rb_intern("==="); - each = rb_intern("each"); - aref = rb_intern("[]"); - aset = rb_intern("[]="); - match = rb_intern("=~"); - missing = rb_intern("method_missing"); - added = rb_intern("method_added"); - singleton_added = rb_intern("singleton_method_added"); - removed = rb_intern("method_removed"); - singleton_removed = rb_intern("singleton_method_removed"); - undefined = rb_intern("method_undefined"); - singleton_undefined = rb_intern("singleton_method_undefined"); -} - |