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synced 2022-11-09 12:17:21 -05:00
d5893b91fa
nobu pointed out that rb_method_basic_definition_p() is enough for last commit. * error.c, eval_error.c: change for above. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35770 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
1403 lines
34 KiB
C
1403 lines
34 KiB
C
/*
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* This file is included by vm.c
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*/
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#define CACHE_SIZE 0x800
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#define CACHE_MASK 0x7ff
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#define EXPR1(c,m) ((((c)>>3)^(m))&CACHE_MASK)
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#define NOEX_NOREDEF NOEX_RESPONDS
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static void rb_vm_check_redefinition_opt_method(const rb_method_entry_t *me, VALUE klass);
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static ID object_id, respond_to_missing;
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static ID removed, singleton_removed, undefined, singleton_undefined;
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static ID added, singleton_added, attached;
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struct cache_entry { /* method hash table. */
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VALUE filled_version; /* filled state version */
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ID mid; /* method's id */
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VALUE klass; /* receiver's class */
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rb_method_entry_t *me;
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};
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static struct cache_entry cache[CACHE_SIZE];
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#define ruby_running (GET_VM()->running)
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/* int ruby_running = 0; */
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static void
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vm_clear_global_method_cache(void)
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{
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struct cache_entry *ent, *end;
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ent = cache;
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end = ent + CACHE_SIZE;
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while (ent < end) {
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ent->filled_version = 0;
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ent++;
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}
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}
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void
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rb_clear_cache(void)
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{
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rb_vm_change_state();
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}
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static void
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rb_clear_cache_for_undef(VALUE klass, ID id)
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{
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rb_vm_change_state();
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}
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static void
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rb_clear_cache_by_id(ID id)
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{
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rb_vm_change_state();
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}
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void
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rb_clear_cache_by_class(VALUE klass)
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{
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rb_vm_change_state();
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}
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VALUE
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rb_f_notimplement(int argc, VALUE *argv, VALUE obj)
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{
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rb_notimplement();
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UNREACHABLE;
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}
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static void
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rb_define_notimplement_method_id(VALUE mod, ID id, rb_method_flag_t noex)
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{
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rb_add_method(mod, id, VM_METHOD_TYPE_NOTIMPLEMENTED, 0, noex);
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}
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void
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rb_add_method_cfunc(VALUE klass, ID mid, VALUE (*func)(ANYARGS), int argc, rb_method_flag_t noex)
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{
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if (func != rb_f_notimplement) {
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rb_method_cfunc_t opt;
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opt.func = func;
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opt.argc = argc;
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rb_add_method(klass, mid, VM_METHOD_TYPE_CFUNC, &opt, noex);
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}
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else {
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rb_define_notimplement_method_id(klass, mid, noex);
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}
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}
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void
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rb_unlink_method_entry(rb_method_entry_t *me)
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{
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struct unlinked_method_entry_list_entry *ume = ALLOC(struct unlinked_method_entry_list_entry);
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ume->me = me;
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ume->next = GET_VM()->unlinked_method_entry_list;
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GET_VM()->unlinked_method_entry_list = ume;
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}
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void
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rb_gc_mark_unlinked_live_method_entries(void *pvm)
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{
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rb_vm_t *vm = pvm;
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struct unlinked_method_entry_list_entry *ume = vm->unlinked_method_entry_list;
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while (ume) {
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if (ume->me->mark) {
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rb_mark_method_entry(ume->me);
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}
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ume = ume->next;
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}
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}
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void
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rb_sweep_method_entry(void *pvm)
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{
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rb_vm_t *vm = pvm;
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struct unlinked_method_entry_list_entry *ume = vm->unlinked_method_entry_list, *prev_ume = 0, *curr_ume;
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while (ume) {
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if (ume->me->mark) {
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ume->me->mark = 0;
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prev_ume = ume;
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ume = ume->next;
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}
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else {
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rb_free_method_entry(ume->me);
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if (prev_ume == 0) {
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vm->unlinked_method_entry_list = ume->next;
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}
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else {
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prev_ume->next = ume->next;
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}
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curr_ume = ume;
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ume = ume->next;
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xfree(curr_ume);
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}
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}
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}
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void
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rb_free_method_entry(rb_method_entry_t *me)
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{
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rb_method_definition_t *def = me->def;
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if (def) {
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if (def->alias_count == 0) {
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xfree(def);
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}
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else if (def->alias_count > 0) {
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def->alias_count--;
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}
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me->def = 0;
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}
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xfree(me);
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}
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static int rb_method_definition_eq(const rb_method_definition_t *d1, const rb_method_definition_t *d2);
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static rb_method_entry_t *
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rb_method_entry_make(VALUE klass, ID mid, rb_method_type_t type,
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rb_method_definition_t *def, rb_method_flag_t noex)
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{
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rb_method_entry_t *me;
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st_table *mtbl;
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st_data_t data;
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if (NIL_P(klass)) {
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klass = rb_cObject;
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}
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if (rb_safe_level() >= 4 &&
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(klass == rb_cObject || !OBJ_UNTRUSTED(klass))) {
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rb_raise(rb_eSecurityError, "Insecure: can't define method");
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}
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if (!FL_TEST(klass, FL_SINGLETON) &&
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type != VM_METHOD_TYPE_NOTIMPLEMENTED &&
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type != VM_METHOD_TYPE_ZSUPER &&
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(mid == rb_intern("initialize") || mid == rb_intern("initialize_copy"))) {
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noex = NOEX_PRIVATE | noex;
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}
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else if (FL_TEST(klass, FL_SINGLETON) &&
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type == VM_METHOD_TYPE_CFUNC &&
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mid == rb_intern("allocate")) {
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rb_warn("defining %s.allocate is deprecated; use rb_define_alloc_func()",
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rb_class2name(rb_ivar_get(klass, attached)));
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mid = ID_ALLOCATOR;
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}
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rb_check_frozen(klass);
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mtbl = RCLASS_M_TBL(klass);
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/* check re-definition */
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if (st_lookup(mtbl, mid, &data)) {
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rb_method_entry_t *old_me = (rb_method_entry_t *)data;
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rb_method_definition_t *old_def = old_me->def;
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if (rb_method_definition_eq(old_def, def)) return old_me;
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#if 0
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if (old_me->flag & NOEX_NOREDEF) {
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rb_raise(rb_eTypeError, "cannot redefine %s#%s", rb_class2name(klass), rb_id2name(mid));
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}
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#endif
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rb_vm_check_redefinition_opt_method(old_me, klass);
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if (RTEST(ruby_verbose) &&
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type != VM_METHOD_TYPE_UNDEF &&
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old_def->alias_count == 0 &&
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old_def->type != VM_METHOD_TYPE_UNDEF &&
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old_def->type != VM_METHOD_TYPE_ZSUPER) {
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rb_iseq_t *iseq = 0;
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rb_warning("method redefined; discarding old %s", rb_id2name(mid));
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switch (old_def->type) {
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case VM_METHOD_TYPE_ISEQ:
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iseq = old_def->body.iseq;
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break;
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case VM_METHOD_TYPE_BMETHOD:
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iseq = rb_proc_get_iseq(old_def->body.proc, 0);
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break;
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default:
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break;
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}
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if (iseq && !NIL_P(iseq->location.filename)) {
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int line = iseq->line_info_table ? rb_iseq_first_lineno(iseq) : 0;
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rb_compile_warning(RSTRING_PTR(iseq->location.filename), line,
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"previous definition of %s was here",
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rb_id2name(old_def->original_id));
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}
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}
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rb_unlink_method_entry(old_me);
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}
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me = ALLOC(rb_method_entry_t);
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rb_clear_cache_by_id(mid);
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me->flag = NOEX_WITH_SAFE(noex);
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me->mark = 0;
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me->called_id = mid;
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me->klass = klass;
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me->def = def;
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if (def) def->alias_count++;
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/* check mid */
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if (klass == rb_cObject && mid == idInitialize) {
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rb_warn("redefining Object#initialize may cause infinite loop");
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}
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/* check mid */
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if (mid == object_id || mid == id__send__) {
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if (type == VM_METHOD_TYPE_ISEQ) {
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rb_warn("redefining `%s' may cause serious problems", rb_id2name(mid));
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}
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}
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st_insert(mtbl, mid, (st_data_t) me);
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return me;
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}
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#define CALL_METHOD_HOOK(klass, hook, mid) do { \
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const VALUE arg = ID2SYM(mid); \
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VALUE recv_class = (klass); \
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ID hook_id = (hook); \
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if (FL_TEST((klass), FL_SINGLETON)) { \
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recv_class = rb_ivar_get((klass), attached); \
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hook_id = singleton_##hook; \
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} \
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rb_funcall2(recv_class, hook_id, 1, &arg); \
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} while (0)
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static void
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method_added(VALUE klass, ID mid)
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{
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if (mid != ID_ALLOCATOR && ruby_running) {
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CALL_METHOD_HOOK(klass, added, mid);
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}
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}
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rb_method_entry_t *
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rb_add_method(VALUE klass, ID mid, rb_method_type_t type, void *opts, rb_method_flag_t noex)
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{
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rb_thread_t *th;
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rb_control_frame_t *cfp;
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int line;
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rb_method_entry_t *me = rb_method_entry_make(klass, mid, type, 0, noex);
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rb_method_definition_t *def = ALLOC(rb_method_definition_t);
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me->def = def;
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def->type = type;
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def->original_id = mid;
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def->alias_count = 0;
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switch (type) {
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case VM_METHOD_TYPE_ISEQ:
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def->body.iseq = (rb_iseq_t *)opts;
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break;
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case VM_METHOD_TYPE_CFUNC:
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def->body.cfunc = *(rb_method_cfunc_t *)opts;
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break;
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case VM_METHOD_TYPE_ATTRSET:
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case VM_METHOD_TYPE_IVAR:
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def->body.attr.id = (ID)opts;
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def->body.attr.location = Qfalse;
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th = GET_THREAD();
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cfp = rb_vm_get_ruby_level_next_cfp(th, th->cfp);
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if (cfp && (line = rb_vm_get_sourceline(cfp))) {
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VALUE location = rb_ary_new3(2, cfp->iseq->location.filename, INT2FIX(line));
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def->body.attr.location = rb_ary_freeze(location);
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}
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break;
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case VM_METHOD_TYPE_BMETHOD:
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def->body.proc = (VALUE)opts;
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break;
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case VM_METHOD_TYPE_NOTIMPLEMENTED:
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def->body.cfunc.func = rb_f_notimplement;
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def->body.cfunc.argc = -1;
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break;
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case VM_METHOD_TYPE_OPTIMIZED:
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def->body.optimize_type = (enum method_optimized_type)opts;
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break;
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case VM_METHOD_TYPE_ZSUPER:
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case VM_METHOD_TYPE_UNDEF:
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break;
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default:
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rb_bug("rb_add_method: unsupported method type (%d)\n", type);
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}
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if (type != VM_METHOD_TYPE_UNDEF) {
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method_added(klass, mid);
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}
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return me;
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}
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rb_method_entry_t *
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rb_method_entry_set(VALUE klass, ID mid, const rb_method_entry_t *me, rb_method_flag_t noex)
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{
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rb_method_type_t type = me->def ? me->def->type : VM_METHOD_TYPE_UNDEF;
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rb_method_entry_t *newme = rb_method_entry_make(klass, mid, type, me->def, noex);
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method_added(klass, mid);
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return newme;
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}
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void
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rb_define_alloc_func(VALUE klass, VALUE (*func)(VALUE))
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{
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Check_Type(klass, T_CLASS);
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rb_add_method_cfunc(rb_singleton_class(klass), ID_ALLOCATOR,
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func, 0, NOEX_PRIVATE);
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}
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void
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rb_undef_alloc_func(VALUE klass)
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{
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Check_Type(klass, T_CLASS);
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rb_add_method(rb_singleton_class(klass), ID_ALLOCATOR, VM_METHOD_TYPE_UNDEF, 0, NOEX_UNDEF);
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}
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rb_alloc_func_t
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rb_get_alloc_func(VALUE klass)
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{
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rb_method_entry_t *me;
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Check_Type(klass, T_CLASS);
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me = rb_method_entry(CLASS_OF(klass), ID_ALLOCATOR);
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if (me && me->def && me->def->type == VM_METHOD_TYPE_CFUNC) {
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return (rb_alloc_func_t)me->def->body.cfunc.func;
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}
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else {
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return 0;
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}
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}
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static rb_method_entry_t*
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search_method(VALUE klass, ID id)
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{
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st_data_t body;
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if (!klass) {
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return 0;
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}
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while (!st_lookup(RCLASS_M_TBL(klass), id, &body)) {
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klass = RCLASS_SUPER(klass);
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if (!klass) {
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return 0;
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}
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}
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return (rb_method_entry_t *)body;
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}
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/*
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* search method entry without the method cache.
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*
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* if you need method entry with method cache (normal case), use
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* rb_method_entry() simply.
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*/
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rb_method_entry_t *
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rb_method_entry_get_without_cache(VALUE klass, ID id)
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{
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rb_method_entry_t *me = search_method(klass, id);
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if (ruby_running) {
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struct cache_entry *ent;
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ent = cache + EXPR1(klass, id);
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ent->filled_version = GET_VM_STATE_VERSION();
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ent->klass = klass;
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if (UNDEFINED_METHOD_ENTRY_P(me)) {
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ent->mid = id;
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ent->me = 0;
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me = 0;
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}
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else {
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ent->mid = id;
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ent->me = me;
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}
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}
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return me;
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}
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rb_method_entry_t *
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rb_method_entry(VALUE klass, ID id)
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{
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struct cache_entry *ent;
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ent = cache + EXPR1(klass, id);
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if (ent->filled_version == GET_VM_STATE_VERSION() &&
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ent->mid == id && ent->klass == klass) {
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return ent->me;
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}
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return rb_method_entry_get_without_cache(klass, id);
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}
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static void
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remove_method(VALUE klass, ID mid)
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{
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st_data_t key, data;
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rb_method_entry_t *me = 0;
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if (klass == rb_cObject) {
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rb_secure(4);
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}
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if (rb_safe_level() >= 4 && !OBJ_UNTRUSTED(klass)) {
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rb_raise(rb_eSecurityError, "Insecure: can't remove method");
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}
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rb_check_frozen(klass);
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if (mid == object_id || mid == id__send__ || mid == idInitialize) {
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rb_warn("removing `%s' may cause serious problems", rb_id2name(mid));
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}
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if (!st_lookup(RCLASS_M_TBL(klass), mid, &data) ||
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!(me = (rb_method_entry_t *)data) ||
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(!me->def || me->def->type == VM_METHOD_TYPE_UNDEF)) {
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rb_name_error(mid, "method `%s' not defined in %s",
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rb_id2name(mid), rb_class2name(klass));
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}
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key = (st_data_t)mid;
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st_delete(RCLASS_M_TBL(klass), &key, &data);
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rb_vm_check_redefinition_opt_method(me, klass);
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rb_clear_cache_for_undef(klass, mid);
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rb_unlink_method_entry(me);
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CALL_METHOD_HOOK(klass, removed, mid);
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}
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void
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rb_remove_method_id(VALUE klass, ID mid)
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{
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remove_method(klass, mid);
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}
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void
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rb_remove_method(VALUE klass, const char *name)
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{
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remove_method(klass, rb_intern(name));
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}
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/*
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* call-seq:
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* remove_method(symbol) -> self
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*
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* Removes the method identified by _symbol_ from the current
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* class. For an example, see <code>Module.undef_method</code>.
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*/
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static VALUE
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rb_mod_remove_method(int argc, VALUE *argv, VALUE mod)
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{
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int i;
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for (i = 0; i < argc; i++) {
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VALUE v = argv[i];
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ID id = rb_check_id(&v);
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if (!id) {
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rb_name_error_str(v, "method `%s' not defined in %s",
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RSTRING_PTR(v), rb_class2name(mod));
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}
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remove_method(mod, id);
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}
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return mod;
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}
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#undef rb_disable_super
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|
#undef rb_enable_super
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|
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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, rb_method_flag_t noex)
|
|
{
|
|
rb_method_entry_t *me;
|
|
|
|
if (klass == rb_cObject) {
|
|
rb_secure(4);
|
|
}
|
|
|
|
me = search_method(klass, name);
|
|
if (!me && RB_TYPE_P(klass, T_MODULE)) {
|
|
me = search_method(rb_cObject, name);
|
|
}
|
|
|
|
if (UNDEFINED_METHOD_ENTRY_P(me)) {
|
|
rb_print_undef(klass, name, 0);
|
|
}
|
|
|
|
if (me->flag != noex) {
|
|
rb_vm_check_redefinition_opt_method(me, klass);
|
|
|
|
if (klass == me->klass) {
|
|
me->flag = noex;
|
|
}
|
|
else {
|
|
rb_add_method(klass, name, VM_METHOD_TYPE_ZSUPER, 0, noex);
|
|
}
|
|
}
|
|
}
|
|
|
|
int
|
|
rb_method_boundp(VALUE klass, ID id, int ex)
|
|
{
|
|
rb_method_entry_t *me = rb_method_entry(klass, id);
|
|
|
|
if (me != 0) {
|
|
if ((ex & ~NOEX_RESPONDS) &&
|
|
((me->flag & NOEX_PRIVATE) ||
|
|
((ex & NOEX_RESPONDS) && (me->flag & NOEX_PROTECTED)))) {
|
|
return 0;
|
|
}
|
|
if (!me->def) return 0;
|
|
if (me->def->type == VM_METHOD_TYPE_NOTIMPLEMENTED) {
|
|
if (ex & NOEX_RESPONDS) return 2;
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
rb_attr(VALUE klass, ID id, int read, int write, int ex)
|
|
{
|
|
const char *name;
|
|
ID attriv;
|
|
VALUE aname;
|
|
rb_method_flag_t 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");
|
|
}
|
|
aname = rb_sprintf("@%s", name);
|
|
rb_enc_copy(aname, rb_id2str(id));
|
|
attriv = rb_intern_str(aname);
|
|
if (read) {
|
|
rb_add_method(klass, id, VM_METHOD_TYPE_IVAR, (void *)attriv, noex);
|
|
}
|
|
if (write) {
|
|
rb_add_method(klass, rb_id_attrset(id), VM_METHOD_TYPE_ATTRSET, (void *)attriv, noex);
|
|
}
|
|
}
|
|
|
|
void
|
|
rb_undef(VALUE klass, ID id)
|
|
{
|
|
rb_method_entry_t *me;
|
|
|
|
if (NIL_P(klass)) {
|
|
rb_raise(rb_eTypeError, "no class to undef method");
|
|
}
|
|
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 == id__send__ || id == idInitialize) {
|
|
rb_warn("undefining `%s' may cause serious problems", rb_id2name(id));
|
|
}
|
|
|
|
me = search_method(klass, id);
|
|
|
|
if (UNDEFINED_METHOD_ENTRY_P(me)) {
|
|
const char *s0 = " class";
|
|
VALUE c = klass;
|
|
|
|
if (FL_TEST(c, FL_SINGLETON)) {
|
|
VALUE obj = rb_ivar_get(klass, attached);
|
|
|
|
switch (TYPE(obj)) {
|
|
case T_MODULE:
|
|
case T_CLASS:
|
|
c = obj;
|
|
s0 = "";
|
|
}
|
|
}
|
|
else if (RB_TYPE_P(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, VM_METHOD_TYPE_UNDEF, 0, NOEX_PUBLIC);
|
|
|
|
CALL_METHOD_HOOK(klass, undefined, 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++) {
|
|
VALUE v = argv[i];
|
|
ID id = rb_check_id(&v);
|
|
if (!id) {
|
|
rb_method_name_error(mod, v);
|
|
}
|
|
rb_undef(mod, id);
|
|
}
|
|
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)
|
|
{
|
|
ID id = rb_check_id(&mid);
|
|
if (!id || !rb_method_boundp(mod, id, 1)) {
|
|
return Qfalse;
|
|
}
|
|
return Qtrue;
|
|
|
|
}
|
|
|
|
#define VISI_CHECK(x,f) (((x)&NOEX_MASK) == (f))
|
|
|
|
static VALUE
|
|
check_definition(VALUE mod, VALUE mid, rb_method_flag_t noex)
|
|
{
|
|
const rb_method_entry_t *me;
|
|
ID id = rb_check_id(&mid);
|
|
if (!id) return Qfalse;
|
|
me = rb_method_entry(mod, id);
|
|
if (me) {
|
|
if (VISI_CHECK(me->flag, noex))
|
|
return Qtrue;
|
|
}
|
|
return Qfalse;
|
|
}
|
|
|
|
/*
|
|
* 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)
|
|
{
|
|
return check_definition(mod, mid, NOEX_PUBLIC);
|
|
}
|
|
|
|
/*
|
|
* 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)
|
|
{
|
|
return check_definition(mod, mid, NOEX_PRIVATE);
|
|
}
|
|
|
|
/*
|
|
* 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)
|
|
{
|
|
return check_definition(mod, mid, NOEX_PROTECTED);
|
|
}
|
|
|
|
int
|
|
rb_method_entry_eq(const rb_method_entry_t *m1, const rb_method_entry_t *m2)
|
|
{
|
|
return rb_method_definition_eq(m1->def, m2->def);
|
|
}
|
|
|
|
static int
|
|
rb_method_definition_eq(const rb_method_definition_t *d1, const rb_method_definition_t *d2)
|
|
{
|
|
if (d1 == d2) return 1;
|
|
if (!d1 || !d2) return 0;
|
|
if (d1->type != d2->type) {
|
|
return 0;
|
|
}
|
|
switch (d1->type) {
|
|
case VM_METHOD_TYPE_ISEQ:
|
|
return d1->body.iseq == d2->body.iseq;
|
|
case VM_METHOD_TYPE_CFUNC:
|
|
return
|
|
d1->body.cfunc.func == d2->body.cfunc.func &&
|
|
d1->body.cfunc.argc == d2->body.cfunc.argc;
|
|
case VM_METHOD_TYPE_ATTRSET:
|
|
case VM_METHOD_TYPE_IVAR:
|
|
return d1->body.attr.id == d2->body.attr.id;
|
|
case VM_METHOD_TYPE_BMETHOD:
|
|
return RTEST(rb_equal(d1->body.proc, d2->body.proc));
|
|
case VM_METHOD_TYPE_MISSING:
|
|
return d1->original_id == d2->original_id;
|
|
case VM_METHOD_TYPE_ZSUPER:
|
|
case VM_METHOD_TYPE_NOTIMPLEMENTED:
|
|
case VM_METHOD_TYPE_UNDEF:
|
|
return 1;
|
|
case VM_METHOD_TYPE_OPTIMIZED:
|
|
return d1->body.optimize_type == d2->body.optimize_type;
|
|
default:
|
|
rb_bug("rb_method_entry_eq: unsupported method type (%d)\n", d1->type);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
static st_index_t
|
|
rb_hash_method_definition(st_index_t hash, const rb_method_definition_t *def)
|
|
{
|
|
hash = rb_hash_uint(hash, def->type);
|
|
switch (def->type) {
|
|
case VM_METHOD_TYPE_ISEQ:
|
|
return rb_hash_uint(hash, (st_index_t)def->body.iseq);
|
|
case VM_METHOD_TYPE_CFUNC:
|
|
hash = rb_hash_uint(hash, (st_index_t)def->body.cfunc.func);
|
|
return rb_hash_uint(hash, def->body.cfunc.argc);
|
|
case VM_METHOD_TYPE_ATTRSET:
|
|
case VM_METHOD_TYPE_IVAR:
|
|
return rb_hash_uint(hash, def->body.attr.id);
|
|
case VM_METHOD_TYPE_BMETHOD:
|
|
return rb_hash_proc(hash, def->body.proc);
|
|
case VM_METHOD_TYPE_MISSING:
|
|
return rb_hash_uint(hash, def->original_id);
|
|
case VM_METHOD_TYPE_ZSUPER:
|
|
case VM_METHOD_TYPE_NOTIMPLEMENTED:
|
|
case VM_METHOD_TYPE_UNDEF:
|
|
return hash;
|
|
case VM_METHOD_TYPE_OPTIMIZED:
|
|
return rb_hash_uint(hash, def->body.optimize_type);
|
|
default:
|
|
rb_bug("rb_hash_method_definition: unsupported method type (%d)\n", def->type);
|
|
}
|
|
return hash;
|
|
}
|
|
|
|
st_index_t
|
|
rb_hash_method_entry(st_index_t hash, const rb_method_entry_t *me)
|
|
{
|
|
return rb_hash_method_definition(hash, me->def);
|
|
}
|
|
|
|
void
|
|
rb_alias(VALUE klass, ID name, ID def)
|
|
{
|
|
VALUE target_klass = klass;
|
|
rb_method_entry_t *orig_me;
|
|
rb_method_flag_t flag = NOEX_UNDEF;
|
|
|
|
if (NIL_P(klass)) {
|
|
rb_raise(rb_eTypeError, "no class to make alias");
|
|
}
|
|
|
|
rb_frozen_class_p(klass);
|
|
if (klass == rb_cObject) {
|
|
rb_secure(4);
|
|
}
|
|
|
|
again:
|
|
orig_me = search_method(klass, def);
|
|
|
|
if (UNDEFINED_METHOD_ENTRY_P(orig_me)) {
|
|
if ((!RB_TYPE_P(klass, T_MODULE)) ||
|
|
(orig_me = search_method(rb_cObject, def), UNDEFINED_METHOD_ENTRY_P(orig_me))) {
|
|
rb_print_undef(klass, def, 0);
|
|
}
|
|
}
|
|
if (orig_me->def->type == VM_METHOD_TYPE_ZSUPER) {
|
|
klass = RCLASS_SUPER(klass);
|
|
def = orig_me->def->original_id;
|
|
flag = orig_me->flag;
|
|
goto again;
|
|
}
|
|
|
|
if (flag == NOEX_UNDEF) flag = orig_me->flag;
|
|
rb_method_entry_set(target_klass, name, orig_me, flag);
|
|
}
|
|
|
|
/*
|
|
* 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)
|
|
{
|
|
ID oldid = rb_check_id(&oldname);
|
|
if (!oldid) {
|
|
rb_print_undef_str(mod, oldname);
|
|
}
|
|
rb_alias(mod, rb_to_id(newname), oldid);
|
|
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, rb_method_flag_t ex)
|
|
{
|
|
int i;
|
|
secure_visibility(self);
|
|
|
|
if (argc == 0) {
|
|
rb_warning("%s with no argument is just ignored", rb_id2name(rb_frame_callee()));
|
|
}
|
|
|
|
for (i = 0; i < argc; i++) {
|
|
VALUE v = argv[i];
|
|
ID id = rb_check_id(&v);
|
|
if (!id) {
|
|
rb_print_undef_str(self, v);
|
|
}
|
|
rb_export_method(self, id, 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 call_one
|
|
* one
|
|
* end
|
|
* end
|
|
* Mod.one #=> "This is one"
|
|
* c = Cls.new
|
|
* c.call_one #=> "This is one"
|
|
* module Mod
|
|
* def one
|
|
* "This is the new one"
|
|
* end
|
|
* end
|
|
* Mod.one #=> "This is one"
|
|
* c.call_one #=> "This is the new one"
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_modfunc(int argc, VALUE *argv, VALUE module)
|
|
{
|
|
int i;
|
|
ID id;
|
|
const rb_method_entry_t *me;
|
|
|
|
if (!RB_TYPE_P(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 (;;) {
|
|
me = search_method(m, id);
|
|
if (me == 0) {
|
|
me = search_method(rb_cObject, id);
|
|
}
|
|
if (UNDEFINED_METHOD_ENTRY_P(me)) {
|
|
rb_print_undef(module, id, 0);
|
|
}
|
|
if (me->def->type != VM_METHOD_TYPE_ZSUPER) {
|
|
break; /* normal case: need not to follow 'super' link */
|
|
}
|
|
m = RCLASS_SUPER(m);
|
|
if (!m)
|
|
break;
|
|
}
|
|
rb_method_entry_set(rb_singleton_class(module), id, me, NOEX_PUBLIC);
|
|
}
|
|
return module;
|
|
}
|
|
|
|
int
|
|
rb_method_basic_definition_p(VALUE klass, ID id)
|
|
{
|
|
const rb_method_entry_t *me = rb_method_entry(klass, id);
|
|
if (me && (me->flag & NOEX_BASIC))
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
static inline int
|
|
basic_obj_respond_to(VALUE obj, ID id, int pub)
|
|
{
|
|
VALUE klass = CLASS_OF(obj);
|
|
|
|
switch (rb_method_boundp(klass, id, pub|NOEX_RESPONDS)) {
|
|
case 2:
|
|
return FALSE;
|
|
case 0:
|
|
return RTEST(rb_funcall(obj, respond_to_missing, 2, ID2SYM(id), pub ? Qfalse : Qtrue));
|
|
default:
|
|
return 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 basic_obj_respond_to(obj, id, !RTEST(priv));
|
|
}
|
|
else {
|
|
return RTEST(rb_funcall(obj, idRespond_to, priv ? 2 : 1, ID2SYM(id), Qtrue));
|
|
}
|
|
}
|
|
|
|
int
|
|
rb_respond_to(VALUE obj, ID id)
|
|
{
|
|
return rb_obj_respond_to(obj, id, FALSE);
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* obj.respond_to?(symbol, include_all=false) -> true or false
|
|
*
|
|
* Returns +true+ if _obj_ responds to the given method. Private and
|
|
* protected methods are included in the search only if the optional
|
|
* second parameter evaluates to +true+.
|
|
*
|
|
* If the method is not implemented,
|
|
* as Process.fork on Windows, File.lchmod on GNU/Linux, etc.,
|
|
* false is returned.
|
|
*
|
|
* If the method is not defined, <code>respond_to_missing?</code>
|
|
* method is called and the result is returned.
|
|
*/
|
|
|
|
static VALUE
|
|
obj_respond_to(int argc, VALUE *argv, VALUE obj)
|
|
{
|
|
VALUE mid, priv;
|
|
ID id;
|
|
|
|
rb_scan_args(argc, argv, "11", &mid, &priv);
|
|
if (!(id = rb_check_id(&mid))) {
|
|
if (!rb_method_basic_definition_p(CLASS_OF(obj), respond_to_missing)) {
|
|
VALUE args[2];
|
|
args[0] = ID2SYM(rb_to_id(mid));
|
|
args[1] = priv;
|
|
return rb_funcall2(obj, respond_to_missing, 2, args);
|
|
}
|
|
return Qfalse;
|
|
}
|
|
if (basic_obj_respond_to(obj, id, !RTEST(priv)))
|
|
return Qtrue;
|
|
return Qfalse;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* obj.respond_to_missing?(symbol, include_all) -> true or false
|
|
*
|
|
* Hook method to return whether the _obj_ can respond to _id_ method
|
|
* or not.
|
|
*
|
|
* See #respond_to?.
|
|
*/
|
|
static VALUE
|
|
obj_respond_to_missing(VALUE obj, VALUE mid, VALUE priv)
|
|
{
|
|
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_method(rb_mKernel, "respond_to_missing?", obj_respond_to_missing, 2);
|
|
|
|
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");
|
|
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");
|
|
attached = rb_intern("__attached__");
|
|
respond_to_missing = rb_intern("respond_to_missing?");
|
|
|
|
{
|
|
#define REPLICATE_METHOD(klass, id, noex) \
|
|
rb_method_entry_set((klass), (id), rb_method_entry((klass), (id)), \
|
|
(rb_method_flag_t)(noex | NOEX_BASIC | NOEX_NOREDEF))
|
|
REPLICATE_METHOD(rb_eException, idMethodMissing, NOEX_PRIVATE);
|
|
REPLICATE_METHOD(rb_eException, idRespond_to, NOEX_PUBLIC);
|
|
REPLICATE_METHOD(rb_eException, respond_to_missing, NOEX_PUBLIC);
|
|
}
|
|
}
|