From bbe04d374ae361408c469882a8f1e6ba41ebb9a2 Mon Sep 17 00:00:00 2001 From: ko1 Date: Sat, 24 May 2008 17:50:17 +0000 Subject: * eval_method.c: renamed from vm_method.c. "vm_method.c" is included by "vm.c". * vm_eval.c: added. Some codes are moved from "eval.c" * common.mk: fix for above changes. * compile.c: make a vm_eval(0) * eval.c, eval_error.c, eval_intern.h, eval_jump.c, proc.c, vm.c, id.c, id.h, vm_core.h, vm_dump.c, vm_evalbody.c, vm_insnhelper.c, blockinlining.c: fix for above changes. and do some refactoring. this changes improve rb_yield() performance. git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@16576 b2dd03c8-39d4-4d8f-98ff-823fe69b080e --- vm_method.c | 1145 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 1145 insertions(+) create mode 100644 vm_method.c (limited to 'vm_method.c') diff --git a/vm_method.c b/vm_method.c new file mode 100644 index 000000000..8c3f7f0a6 --- /dev/null +++ b/vm_method.c @@ -0,0 +1,1145 @@ +/* -*-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_TAINTED(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_TAINTED(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 Module.undef_method. + */ + +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_TAINTED(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) { + 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 remove_method, 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 + * + * produces: + * + * In child + * In parent + * prog.rb:23: undefined method `hello' for # (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 new_name a new copy of the method old_name. 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) + * + * produces: + * + * 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_TAINTED(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 new. + * + * 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; +} + +/* + * 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 NODE *basic_respond_to = 0; + +int +rb_obj_respond_to(VALUE obj, ID id, int priv) +{ + VALUE klass = CLASS_OF(obj); + + if (rb_method_node(klass, idRespond_to) == basic_respond_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) +{ + rb_define_method(rb_mKernel, "respond_to?", obj_respond_to, -1); + basic_respond_to = rb_method_node(rb_cObject, idRespond_to); + rb_register_mark_object((VALUE)basic_respond_to); + + 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"); +} + -- cgit