/********************************************************************** vm_eval.c - $Author$ created at: Sat May 24 16:02:32 JST 2008 Copyright (C) 1993-2007 Yukihiro Matsumoto Copyright (C) 2000 Network Applied Communication Laboratory, Inc. Copyright (C) 2000 Information-technology Promotion Agency, Japan **********************************************************************/ #include "internal/thread.h" struct local_var_list { VALUE tbl; }; static inline VALUE method_missing(rb_execution_context_t *ec, VALUE obj, ID id, int argc, const VALUE *argv, enum method_missing_reason call_status, int kw_splat); static inline VALUE vm_yield_with_cref(rb_execution_context_t *ec, int argc, const VALUE *argv, int kw_splat, const rb_cref_t *cref, int is_lambda); static inline VALUE vm_yield(rb_execution_context_t *ec, int argc, const VALUE *argv, int kw_splat); static inline VALUE vm_yield_with_block(rb_execution_context_t *ec, int argc, const VALUE *argv, VALUE block_handler, int kw_splat); static inline VALUE vm_yield_force_blockarg(rb_execution_context_t *ec, VALUE args); VALUE vm_exec(rb_execution_context_t *ec); static void vm_set_eval_stack(rb_execution_context_t * th, const rb_iseq_t *iseq, const rb_cref_t *cref, const struct rb_block *base_block); static int vm_collect_local_variables_in_heap(const VALUE *dfp, const struct local_var_list *vars); static VALUE rb_eUncaughtThrow; static ID id_result, id_tag, id_value; #define id_mesg idMesg static VALUE send_internal(int argc, const VALUE *argv, VALUE recv, call_type scope); static VALUE vm_call0_body(rb_execution_context_t* ec, struct rb_calling_info *calling, const VALUE *argv); static VALUE * vm_argv_ruby_array(VALUE *av, const VALUE *argv, int *flags, int *argc, int kw_splat) { *flags |= VM_CALL_ARGS_SPLAT; VALUE argv_ary = rb_ary_hidden_new(*argc); rb_ary_cat(argv_ary, argv, *argc); *argc = 2; av[0] = argv_ary; if (kw_splat) { av[1] = rb_ary_pop(argv_ary); } else { // Make sure flagged keyword hash passed as regular argument // isn't treated as keywords *flags |= VM_CALL_KW_SPLAT; av[1] = rb_hash_new(); } return av; } static inline VALUE vm_call0_cc(rb_execution_context_t *ec, VALUE recv, ID id, int argc, const VALUE *argv, const struct rb_callcache *cc, int kw_splat); VALUE rb_vm_call0(rb_execution_context_t *ec, VALUE recv, ID id, int argc, const VALUE *argv, const rb_callable_method_entry_t *cme, int kw_splat) { const struct rb_callcache cc = VM_CC_ON_STACK(Qfalse, vm_call_general, {{ 0 }}, cme); return vm_call0_cc(ec, recv, id, argc, argv, &cc, kw_splat); } VALUE rb_vm_call_with_refinements(rb_execution_context_t *ec, VALUE recv, ID id, int argc, const VALUE *argv, int kw_splat) { const rb_callable_method_entry_t *me = rb_callable_method_entry_with_refinements(CLASS_OF(recv), id, NULL); if (me) { return rb_vm_call0(ec, recv, id, argc, argv, me, kw_splat); } else { /* fallback to funcall (e.g. method_missing) */ return rb_funcallv(recv, id, argc, argv); } } static inline VALUE vm_call0_cc(rb_execution_context_t *ec, VALUE recv, ID id, int argc, const VALUE *argv, const struct rb_callcache *cc, int kw_splat) { int flags = kw_splat ? VM_CALL_KW_SPLAT : 0; VALUE *use_argv = (VALUE *)argv; VALUE av[2]; if (UNLIKELY(vm_cc_cme(cc)->def->type == VM_METHOD_TYPE_ISEQ && argc > VM_ARGC_STACK_MAX)) { use_argv = vm_argv_ruby_array(av, argv, &flags, &argc, kw_splat); } struct rb_calling_info calling = { .cd = &(struct rb_call_data) { .ci = &VM_CI_ON_STACK(id, flags, argc, NULL), .cc = NULL, }, .cc = cc, .block_handler = vm_passed_block_handler(ec), .recv = recv, .argc = argc, .kw_splat = kw_splat, }; return vm_call0_body(ec, &calling, use_argv); } static VALUE vm_call0_cme(rb_execution_context_t *ec, struct rb_calling_info *calling, const VALUE *argv, const rb_callable_method_entry_t *cme) { calling->cc = &VM_CC_ON_STACK(Qfalse, vm_call_general, {{ 0 }}, cme); return vm_call0_body(ec, calling, argv); } static VALUE vm_call0_super(rb_execution_context_t *ec, struct rb_calling_info *calling, const VALUE *argv, VALUE klass, enum method_missing_reason ex) { ID mid = vm_ci_mid(calling->cd->ci); klass = RCLASS_SUPER(klass); if (klass) { const rb_callable_method_entry_t *cme = rb_callable_method_entry(klass, mid); if (cme) { RUBY_VM_CHECK_INTS(ec); return vm_call0_cme(ec, calling, argv, cme); } } vm_passed_block_handler_set(ec, calling->block_handler); return method_missing(ec, calling->recv, mid, calling->argc, argv, ex, calling->kw_splat); } static VALUE vm_call0_cfunc_with_frame(rb_execution_context_t* ec, struct rb_calling_info *calling, const VALUE *argv) { const struct rb_callinfo *ci = calling->cd->ci; VALUE val; const rb_callable_method_entry_t *me = vm_cc_cme(calling->cc); const rb_method_cfunc_t *cfunc = UNALIGNED_MEMBER_PTR(me->def, body.cfunc); int len = cfunc->argc; VALUE recv = calling->recv; int argc = calling->argc; ID mid = vm_ci_mid(ci); VALUE block_handler = calling->block_handler; int frame_flags = VM_FRAME_MAGIC_CFUNC | VM_FRAME_FLAG_CFRAME | VM_ENV_FLAG_LOCAL; if (calling->kw_splat) { if (argc > 0 && RB_TYPE_P(argv[argc-1], T_HASH) && RHASH_EMPTY_P(argv[argc-1])) { argc--; } else { frame_flags |= VM_FRAME_FLAG_CFRAME_KW; } } RUBY_DTRACE_CMETHOD_ENTRY_HOOK(ec, me->owner, me->def->original_id); EXEC_EVENT_HOOK(ec, RUBY_EVENT_C_CALL, recv, me->def->original_id, mid, me->owner, Qnil); { rb_control_frame_t *reg_cfp = ec->cfp; vm_push_frame(ec, 0, frame_flags, recv, block_handler, (VALUE)me, 0, reg_cfp->sp, 0, 0); if (len >= 0) rb_check_arity(argc, len, len); val = (*cfunc->invoker)(recv, argc, argv, cfunc->func); CHECK_CFP_CONSISTENCY("vm_call0_cfunc_with_frame"); rb_vm_pop_frame(ec); } EXEC_EVENT_HOOK(ec, RUBY_EVENT_C_RETURN, recv, me->def->original_id, mid, me->owner, val); RUBY_DTRACE_CMETHOD_RETURN_HOOK(ec, me->owner, me->def->original_id); return val; } static VALUE vm_call0_cfunc(rb_execution_context_t *ec, struct rb_calling_info *calling, const VALUE *argv) { return vm_call0_cfunc_with_frame(ec, calling, argv); } static void vm_call_check_arity(struct rb_calling_info *calling, int argc, const VALUE *argv) { if (calling->kw_splat && calling->argc > 0 && RB_TYPE_P(argv[calling->argc-1], T_HASH) && RHASH_EMPTY_P(argv[calling->argc-1])) { calling->argc--; } rb_check_arity(calling->argc, argc, argc); } /* `ci' should point temporal value (on stack value) */ static VALUE vm_call0_body(rb_execution_context_t *ec, struct rb_calling_info *calling, const VALUE *argv) { const struct rb_callinfo *ci = calling->cd->ci; const struct rb_callcache *cc = calling->cc; VALUE ret; retry: switch (vm_cc_cme(cc)->def->type) { case VM_METHOD_TYPE_ISEQ: { rb_control_frame_t *reg_cfp = ec->cfp; int i; CHECK_VM_STACK_OVERFLOW(reg_cfp, calling->argc + 1); vm_check_canary(ec, reg_cfp->sp); *reg_cfp->sp++ = calling->recv; for (i = 0; i < calling->argc; i++) { *reg_cfp->sp++ = argv[i]; } if (ISEQ_BODY(def_iseq_ptr(vm_cc_cme(cc)->def))->param.flags.forwardable) { vm_call_iseq_fwd_setup(ec, reg_cfp, calling); } else { vm_call_iseq_setup(ec, reg_cfp, calling); } VM_ENV_FLAGS_SET(ec->cfp->ep, VM_FRAME_FLAG_FINISH); return vm_exec(ec); // CHECK_INTS in this function } case VM_METHOD_TYPE_NOTIMPLEMENTED: case VM_METHOD_TYPE_CFUNC: ret = vm_call0_cfunc(ec, calling, argv); goto success; case VM_METHOD_TYPE_ATTRSET: vm_call_check_arity(calling, 1, argv); VM_CALL_METHOD_ATTR(ret, rb_ivar_set(calling->recv, vm_cc_cme(cc)->def->body.attr.id, argv[0]), (void)0); goto success; case VM_METHOD_TYPE_IVAR: vm_call_check_arity(calling, 0, argv); VM_CALL_METHOD_ATTR(ret, rb_attr_get(calling->recv, vm_cc_cme(cc)->def->body.attr.id), (void)0); goto success; case VM_METHOD_TYPE_BMETHOD: ret = vm_call_bmethod_body(ec, calling, argv); goto success; case VM_METHOD_TYPE_ZSUPER: { VALUE klass = RCLASS_ORIGIN(vm_cc_cme(cc)->defined_class); return vm_call0_super(ec, calling, argv, klass, MISSING_SUPER); } case VM_METHOD_TYPE_REFINED: { const rb_callable_method_entry_t *cme = vm_cc_cme(cc); if (cme->def->body.refined.orig_me) { const rb_callable_method_entry_t *orig_cme = refined_method_callable_without_refinement(cme); return vm_call0_cme(ec, calling, argv, orig_cme); } VALUE klass = cme->defined_class; return vm_call0_super(ec, calling, argv, klass, 0); } case VM_METHOD_TYPE_ALIAS: { const rb_callable_method_entry_t *cme = vm_cc_cme(cc); const rb_callable_method_entry_t *orig_cme = aliased_callable_method_entry(cme); if (cme == orig_cme) rb_bug("same!!"); if (vm_cc_markable(cc)) { return vm_call0_cme(ec, calling, argv, orig_cme); } else { *((const rb_callable_method_entry_t **)&cc->cme_) = orig_cme; goto retry; } } case VM_METHOD_TYPE_MISSING: { vm_passed_block_handler_set(ec, calling->block_handler); return method_missing(ec, calling->recv, vm_ci_mid(ci), calling->argc, argv, MISSING_NOENTRY, calling->kw_splat); } case VM_METHOD_TYPE_OPTIMIZED: switch (vm_cc_cme(cc)->def->body.optimized.type) { case OPTIMIZED_METHOD_TYPE_SEND: ret = send_internal(calling->argc, argv, calling->recv, calling->kw_splat ? CALL_FCALL_KW : CALL_FCALL); goto success; case OPTIMIZED_METHOD_TYPE_CALL: { rb_proc_t *proc; GetProcPtr(calling->recv, proc); ret = rb_vm_invoke_proc(ec, proc, calling->argc, argv, calling->kw_splat, calling->block_handler); goto success; } case OPTIMIZED_METHOD_TYPE_STRUCT_AREF: vm_call_check_arity(calling, 0, argv); VM_CALL_METHOD_ATTR(ret, vm_call_opt_struct_aref0(ec, calling), (void)0); goto success; case OPTIMIZED_METHOD_TYPE_STRUCT_ASET: vm_call_check_arity(calling, 1, argv); VM_CALL_METHOD_ATTR(ret, vm_call_opt_struct_aset0(ec, calling, argv[0]), (void)0); goto success; default: rb_bug("vm_call0: unsupported optimized method type (%d)", vm_cc_cme(cc)->def->body.optimized.type); } break; case VM_METHOD_TYPE_UNDEF: break; } rb_bug("vm_call0: unsupported method type (%d)", vm_cc_cme(cc)->def->type); return Qundef; success: RUBY_VM_CHECK_INTS(ec); return ret; } VALUE rb_vm_call_kw(rb_execution_context_t *ec, VALUE recv, VALUE id, int argc, const VALUE *argv, const rb_callable_method_entry_t *me, int kw_splat) { return rb_vm_call0(ec, recv, id, argc, argv, me, kw_splat); } static inline VALUE vm_call_super(rb_execution_context_t *ec, int argc, const VALUE *argv, int kw_splat) { VALUE recv = ec->cfp->self; VALUE klass; ID id; rb_control_frame_t *cfp = ec->cfp; const rb_callable_method_entry_t *me = rb_vm_frame_method_entry(cfp); if (VM_FRAME_RUBYFRAME_P(cfp)) { rb_bug("vm_call_super: should not be reached"); } klass = RCLASS_ORIGIN(me->defined_class); klass = RCLASS_SUPER(klass); id = me->def->original_id; me = rb_callable_method_entry(klass, id); if (!me) { return method_missing(ec, recv, id, argc, argv, MISSING_SUPER, kw_splat); } return rb_vm_call_kw(ec, recv, id, argc, argv, me, kw_splat); } VALUE rb_call_super_kw(int argc, const VALUE *argv, int kw_splat) { rb_execution_context_t *ec = GET_EC(); PASS_PASSED_BLOCK_HANDLER_EC(ec); return vm_call_super(ec, argc, argv, kw_splat); } VALUE rb_call_super(int argc, const VALUE *argv) { return rb_call_super_kw(argc, argv, RB_NO_KEYWORDS); } VALUE rb_current_receiver(void) { const rb_execution_context_t *ec = GET_EC(); rb_control_frame_t *cfp; if (!ec || !(cfp = ec->cfp)) { rb_raise(rb_eRuntimeError, "no self, no life"); } return cfp->self; } static inline void stack_check(rb_execution_context_t *ec) { if (!rb_ec_raised_p(ec, RAISED_STACKOVERFLOW) && rb_ec_stack_check(ec)) { rb_ec_raised_set(ec, RAISED_STACKOVERFLOW); rb_ec_stack_overflow(ec, FALSE); } } void rb_check_stack_overflow(void) { #ifndef RB_THREAD_LOCAL_SPECIFIER if (!ruby_current_ec_key) return; #endif rb_execution_context_t *ec = GET_EC(); if (ec) stack_check(ec); } NORETURN(static void uncallable_object(VALUE recv, ID mid)); static inline const rb_callable_method_entry_t *rb_search_method_entry(VALUE recv, ID mid); static inline enum method_missing_reason rb_method_call_status(rb_execution_context_t *ec, const rb_callable_method_entry_t *me, call_type scope, VALUE self); static VALUE gccct_hash(VALUE klass, ID mid) { return (klass >> 3) ^ (VALUE)mid; } NOINLINE(static const struct rb_callcache *gccct_method_search_slowpath(rb_vm_t *vm, VALUE klass, unsigned int index, const struct rb_callinfo * ci)); static const struct rb_callcache * gccct_method_search_slowpath(rb_vm_t *vm, VALUE klass, unsigned int index, const struct rb_callinfo *ci) { struct rb_call_data cd = { .ci = ci, .cc = NULL }; vm_search_method_slowpath0(vm->self, &cd, klass); return vm->global_cc_cache_table[index] = cd.cc; } static void scope_to_ci(call_type scope, ID mid, int argc, struct rb_callinfo *ci) { int flags = 0; switch(scope) { case CALL_PUBLIC: break; case CALL_FCALL: flags |= VM_CALL_FCALL; break; case CALL_VCALL: flags |= VM_CALL_VCALL; break; case CALL_PUBLIC_KW: flags |= VM_CALL_KWARG; break; case CALL_FCALL_KW: flags |= (VM_CALL_KWARG | VM_CALL_FCALL); break; } *ci = VM_CI_ON_STACK(mid, flags, argc, NULL); } static inline const struct rb_callcache * gccct_method_search(rb_execution_context_t *ec, VALUE recv, ID mid, const struct rb_callinfo *ci) { VALUE klass; if (!SPECIAL_CONST_P(recv)) { klass = RBASIC_CLASS(recv); if (UNLIKELY(!klass)) uncallable_object(recv, mid); } else { klass = CLASS_OF(recv); } // search global method cache unsigned int index = (unsigned int)(gccct_hash(klass, mid) % VM_GLOBAL_CC_CACHE_TABLE_SIZE); rb_vm_t *vm = rb_ec_vm_ptr(ec); const struct rb_callcache *cc = vm->global_cc_cache_table[index]; if (LIKELY(cc)) { if (LIKELY(vm_cc_class_check(cc, klass))) { const rb_callable_method_entry_t *cme = vm_cc_cme(cc); if (LIKELY(!METHOD_ENTRY_INVALIDATED(cme) && cme->called_id == mid)) { VM_ASSERT(vm_cc_check_cme(cc, rb_callable_method_entry(klass, mid))); RB_DEBUG_COUNTER_INC(gccct_hit); return cc; } } } else { RB_DEBUG_COUNTER_INC(gccct_null); } RB_DEBUG_COUNTER_INC(gccct_miss); return gccct_method_search_slowpath(vm, klass, index, ci); } /** * @internal * calls the specified method. * * This function is called by functions in rb_call* family. * @param ec current execution context * @param recv receiver of the method * @param mid an ID that represents the name of the method * @param argc the number of method arguments * @param argv a pointer to an array of method arguments * @param scope * @param self self in the caller. Qundef means no self is considered and * protected methods cannot be called * * @note `self` is used in order to controlling access to protected methods. */ static inline VALUE rb_call0(rb_execution_context_t *ec, VALUE recv, ID mid, int argc, const VALUE *argv, call_type call_scope, VALUE self) { enum method_missing_reason call_status; call_type scope = call_scope; int kw_splat = RB_NO_KEYWORDS; switch (scope) { case CALL_PUBLIC_KW: scope = CALL_PUBLIC; kw_splat = 1; break; case CALL_FCALL_KW: scope = CALL_FCALL; kw_splat = 1; break; default: break; } struct rb_callinfo ci; scope_to_ci(scope, mid, argc, &ci); const struct rb_callcache *cc = gccct_method_search(ec, recv, mid, &ci); if (scope == CALL_PUBLIC) { RB_DEBUG_COUNTER_INC(call0_public); const rb_callable_method_entry_t *cc_cme = cc ? vm_cc_cme(cc) : NULL; const rb_callable_method_entry_t *cme = callable_method_entry_refinements0(CLASS_OF(recv), mid, NULL, true, cc_cme); call_status = rb_method_call_status(ec, cme, scope, self); if (UNLIKELY(call_status != MISSING_NONE)) { return method_missing(ec, recv, mid, argc, argv, call_status, kw_splat); } else if (UNLIKELY(cc_cme != cme)) { // refinement is solved stack_check(ec); return rb_vm_call_kw(ec, recv, mid, argc, argv, cme, kw_splat); } } else { RB_DEBUG_COUNTER_INC(call0_other); call_status = rb_method_call_status(ec, cc ? vm_cc_cme(cc) : NULL, scope, self); if (UNLIKELY(call_status != MISSING_NONE)) { return method_missing(ec, recv, mid, argc, argv, call_status, kw_splat); } } stack_check(ec); return vm_call0_cc(ec, recv, mid, argc, argv, cc, kw_splat); } struct rescue_funcall_args { VALUE defined_class; VALUE recv; ID mid; rb_execution_context_t *ec; const rb_callable_method_entry_t *cme; unsigned int respond: 1; unsigned int respond_to_missing: 1; int argc; const VALUE *argv; int kw_splat; }; static VALUE check_funcall_exec(VALUE v) { struct rescue_funcall_args *args = (void *)v; return call_method_entry(args->ec, args->defined_class, args->recv, idMethodMissing, args->cme, args->argc, args->argv, args->kw_splat); } static VALUE check_funcall_failed(VALUE v, VALUE e) { struct rescue_funcall_args *args = (void *)v; int ret = args->respond; if (!ret) { switch (method_boundp(args->defined_class, args->mid, BOUND_PRIVATE|BOUND_RESPONDS)) { case 2: ret = TRUE; break; case 0: ret = args->respond_to_missing; break; default: ret = FALSE; break; } } if (ret) { rb_exc_raise(e); } return Qundef; } static int check_funcall_respond_to(rb_execution_context_t *ec, VALUE klass, VALUE recv, ID mid) { return vm_respond_to(ec, klass, recv, mid, TRUE); } static int check_funcall_callable(rb_execution_context_t *ec, const rb_callable_method_entry_t *me) { return rb_method_call_status(ec, me, CALL_FCALL, ec->cfp->self) == MISSING_NONE; } static VALUE check_funcall_missing(rb_execution_context_t *ec, VALUE klass, VALUE recv, ID mid, int argc, const VALUE *argv, int respond, VALUE def, int kw_splat) { struct rescue_funcall_args args; const rb_callable_method_entry_t *cme; VALUE ret = Qundef; ret = basic_obj_respond_to_missing(ec, klass, recv, ID2SYM(mid), Qtrue); if (!RTEST(ret)) return def; args.respond = respond > 0; args.respond_to_missing = !UNDEF_P(ret); ret = def; cme = callable_method_entry(klass, idMethodMissing, &args.defined_class); if (cme && !METHOD_ENTRY_BASIC(cme)) { VALUE argbuf, *new_args = ALLOCV_N(VALUE, argbuf, argc+1); new_args[0] = ID2SYM(mid); #ifdef __GLIBC__ if (!argv) { static const VALUE buf = Qfalse; VM_ASSERT(argc == 0); argv = &buf; } #endif MEMCPY(new_args+1, argv, VALUE, argc); ec->method_missing_reason = MISSING_NOENTRY; args.ec = ec; args.recv = recv; args.cme = cme; args.mid = mid; args.argc = argc + 1; args.argv = new_args; args.kw_splat = kw_splat; ret = rb_rescue2(check_funcall_exec, (VALUE)&args, check_funcall_failed, (VALUE)&args, rb_eNoMethodError, (VALUE)0); ALLOCV_END(argbuf); } return ret; } static VALUE rb_check_funcall_default_kw(VALUE recv, ID mid, int argc, const VALUE *argv, VALUE def, int kw_splat); VALUE rb_check_funcall_kw(VALUE recv, ID mid, int argc, const VALUE *argv, int kw_splat) { return rb_check_funcall_default_kw(recv, mid, argc, argv, Qundef, kw_splat); } VALUE rb_check_funcall(VALUE recv, ID mid, int argc, const VALUE *argv) { return rb_check_funcall_default_kw(recv, mid, argc, argv, Qundef, RB_NO_KEYWORDS); } static VALUE rb_check_funcall_default_kw(VALUE recv, ID mid, int argc, const VALUE *argv, VALUE def, int kw_splat) { VM_ASSERT(ruby_thread_has_gvl_p()); VALUE klass = CLASS_OF(recv); const rb_callable_method_entry_t *me; rb_execution_context_t *ec = GET_EC(); int respond = check_funcall_respond_to(ec, klass, recv, mid); if (!respond) return def; me = rb_search_method_entry(recv, mid); if (!check_funcall_callable(ec, me)) { VALUE ret = check_funcall_missing(ec, klass, recv, mid, argc, argv, respond, def, kw_splat); if (UNDEF_P(ret)) ret = def; return ret; } stack_check(ec); return rb_vm_call_kw(ec, recv, mid, argc, argv, me, kw_splat); } VALUE rb_check_funcall_default(VALUE recv, ID mid, int argc, const VALUE *argv, VALUE def) { return rb_check_funcall_default_kw(recv, mid, argc, argv, def, RB_NO_KEYWORDS); } VALUE rb_check_funcall_with_hook_kw(VALUE recv, ID mid, int argc, const VALUE *argv, rb_check_funcall_hook *hook, VALUE arg, int kw_splat) { VALUE klass = CLASS_OF(recv); const rb_callable_method_entry_t *me; rb_execution_context_t *ec = GET_EC(); int respond = check_funcall_respond_to(ec, klass, recv, mid); if (!respond) { (*hook)(FALSE, recv, mid, argc, argv, arg); return Qundef; } me = rb_search_method_entry(recv, mid); if (!check_funcall_callable(ec, me)) { VALUE ret = check_funcall_missing(ec, klass, recv, mid, argc, argv, respond, Qundef, kw_splat); (*hook)(!UNDEF_P(ret), recv, mid, argc, argv, arg); return ret; } stack_check(ec); (*hook)(TRUE, recv, mid, argc, argv, arg); return rb_vm_call_kw(ec, recv, mid, argc, argv, me, kw_splat); } const char * rb_type_str(enum ruby_value_type type) { #define type_case(t) t: return #t switch (type) { case type_case(T_NONE); case type_case(T_OBJECT); case type_case(T_CLASS); case type_case(T_MODULE); case type_case(T_FLOAT); case type_case(T_STRING); case type_case(T_REGEXP); case type_case(T_ARRAY); case type_case(T_HASH); case type_case(T_STRUCT); case type_case(T_BIGNUM); case type_case(T_FILE); case type_case(T_DATA); case type_case(T_MATCH); case type_case(T_COMPLEX); case type_case(T_RATIONAL); case type_case(T_NIL); case type_case(T_TRUE); case type_case(T_FALSE); case type_case(T_SYMBOL); case type_case(T_FIXNUM); case type_case(T_IMEMO); case type_case(T_UNDEF); case type_case(T_NODE); case type_case(T_ICLASS); case type_case(T_ZOMBIE); case type_case(T_MOVED); case T_MASK: break; } #undef type_case return NULL; } static void uncallable_object(VALUE recv, ID mid) { VALUE flags; int type; const char *typestr; VALUE mname = rb_id2str(mid); if (SPECIAL_CONST_P(recv)) { rb_raise(rb_eNotImpError, "method '%"PRIsVALUE"' called on unexpected immediate object (%p)", mname, (void *)recv); } else if ((flags = RBASIC(recv)->flags) == 0) { rb_raise(rb_eNotImpError, "method '%"PRIsVALUE"' called on terminated object (%p)", mname, (void *)recv); } else if (!(typestr = rb_type_str(type = BUILTIN_TYPE(recv)))) { rb_raise(rb_eNotImpError, "method '%"PRIsVALUE"' called on broken T_?""?""?(0x%02x) object" " (%p flags=0x%"PRIxVALUE")", mname, type, (void *)recv, flags); } else if (T_OBJECT <= type && type < T_NIL) { rb_raise(rb_eNotImpError, "method '%"PRIsVALUE"' called on hidden %s object" " (%p flags=0x%"PRIxVALUE")", mname, typestr, (void *)recv, flags); } else { rb_raise(rb_eNotImpError, "method '%"PRIsVALUE"' called on unexpected %s object" " (%p flags=0x%"PRIxVALUE")", mname, typestr, (void *)recv, flags); } } static inline const rb_callable_method_entry_t * rb_search_method_entry(VALUE recv, ID mid) { VALUE klass = CLASS_OF(recv); if (!klass) uncallable_object(recv, mid); return rb_callable_method_entry(klass, mid); } static inline enum method_missing_reason rb_method_call_status(rb_execution_context_t *ec, const rb_callable_method_entry_t *me, call_type scope, VALUE self) { if (UNLIKELY(UNDEFINED_METHOD_ENTRY_P(me))) { goto undefined; } else if (UNLIKELY(me->def->type == VM_METHOD_TYPE_REFINED)) { me = rb_resolve_refined_method_callable(Qnil, me); if (UNDEFINED_METHOD_ENTRY_P(me)) goto undefined; } rb_method_visibility_t visi = METHOD_ENTRY_VISI(me); /* receiver specified form for private method */ if (UNLIKELY(visi != METHOD_VISI_PUBLIC)) { if (me->def->original_id == idMethodMissing) { return MISSING_NONE; } else if (visi == METHOD_VISI_PRIVATE && scope == CALL_PUBLIC) { return MISSING_PRIVATE; } /* self must be kind of a specified form for protected method */ else if (visi == METHOD_VISI_PROTECTED && scope == CALL_PUBLIC) { VALUE defined_class = me->owner; if (RB_TYPE_P(defined_class, T_ICLASS)) { defined_class = RBASIC(defined_class)->klass; } if (UNDEF_P(self) || !rb_obj_is_kind_of(self, defined_class)) { return MISSING_PROTECTED; } } } return MISSING_NONE; undefined: return scope == CALL_VCALL ? MISSING_VCALL : MISSING_NOENTRY; } /** * @internal * calls the specified method. * * This function is called by functions in rb_call* family. * @param recv receiver * @param mid an ID that represents the name of the method * @param argc the number of method arguments * @param argv a pointer to an array of method arguments * @param scope */ static inline VALUE rb_call(VALUE recv, ID mid, int argc, const VALUE *argv, call_type scope) { rb_execution_context_t *ec = GET_EC(); return rb_call0(ec, recv, mid, argc, argv, scope, ec->cfp->self); } NORETURN(static void raise_method_missing(rb_execution_context_t *ec, int argc, const VALUE *argv, VALUE obj, enum method_missing_reason call_status)); /* * call-seq: * obj.method_missing(symbol [, *args] ) -> result * * Invoked by Ruby when obj is sent a message it cannot handle. * symbol is the symbol for the method called, and args * are any arguments that were passed to it. By default, the interpreter * raises an error when this method is called. However, it is possible * to override the method to provide more dynamic behavior. * If it is decided that a particular method should not be handled, then * super should be called, so that ancestors can pick up the * missing method. * The example below creates * a class Roman, which responds to methods with names * consisting of roman numerals, returning the corresponding integer * values. * * class Roman * def roman_to_int(str) * # ... * end * * def method_missing(symbol, *args) * str = symbol.id2name * begin * roman_to_int(str) * rescue * super(symbol, *args) * end * end * end * * r = Roman.new * r.iv #=> 4 * r.xxiii #=> 23 * r.mm #=> 2000 * r.foo #=> NoMethodError */ static VALUE rb_method_missing(int argc, const VALUE *argv, VALUE obj) { rb_execution_context_t *ec = GET_EC(); raise_method_missing(ec, argc, argv, obj, ec->method_missing_reason); UNREACHABLE_RETURN(Qnil); } VALUE rb_make_no_method_exception(VALUE exc, VALUE format, VALUE obj, int argc, const VALUE *argv, int priv) { VALUE name = argv[0]; if (!format) { format = rb_fstring_lit("undefined method '%1$s' for %3$s%4$s"); } if (exc == rb_eNoMethodError) { VALUE args = rb_ary_new4(argc - 1, argv + 1); return rb_nomethod_err_new(format, obj, name, args, priv); } else { return rb_name_err_new(format, obj, name); } } static void raise_method_missing(rb_execution_context_t *ec, int argc, const VALUE *argv, VALUE obj, enum method_missing_reason last_call_status) { VALUE exc = rb_eNoMethodError; VALUE format = 0; if (UNLIKELY(argc == 0)) { rb_raise(rb_eArgError, "no method name given"); } else if (UNLIKELY(!SYMBOL_P(argv[0]))) { const VALUE e = rb_eArgError; /* TODO: TypeError? */ rb_raise(e, "method name must be a Symbol but %"PRIsVALUE" is given", rb_obj_class(argv[0])); } stack_check(ec); if (last_call_status & MISSING_PRIVATE) { format = rb_fstring_lit("private method '%1$s' called for %3$s%4$s"); } else if (last_call_status & MISSING_PROTECTED) { format = rb_fstring_lit("protected method '%1$s' called for %3$s%4$s"); } else if (last_call_status & MISSING_VCALL) { format = rb_fstring_lit("undefined local variable or method '%1$s' for %3$s%4$s"); exc = rb_eNameError; } else if (last_call_status & MISSING_SUPER) { format = rb_fstring_lit("super: no superclass method '%1$s' for %3$s%4$s"); } { exc = rb_make_no_method_exception(exc, format, obj, argc, argv, last_call_status & (MISSING_FCALL|MISSING_VCALL)); if (!(last_call_status & MISSING_MISSING)) { rb_vm_pop_cfunc_frame(); } rb_exc_raise(exc); } } static void vm_raise_method_missing(rb_execution_context_t *ec, int argc, const VALUE *argv, VALUE obj, int call_status) { vm_passed_block_handler_set(ec, VM_BLOCK_HANDLER_NONE); raise_method_missing(ec, argc, argv, obj, call_status | MISSING_MISSING); } static inline VALUE method_missing(rb_execution_context_t *ec, VALUE obj, ID id, int argc, const VALUE *argv, enum method_missing_reason call_status, int kw_splat) { VALUE *nargv, result, work, klass; VALUE block_handler = vm_passed_block_handler(ec); const rb_callable_method_entry_t *me; ec->method_missing_reason = call_status; if (id == idMethodMissing) { goto missing; } nargv = ALLOCV_N(VALUE, work, argc + 1); nargv[0] = ID2SYM(id); #ifdef __GLIBC__ if (!argv) { static const VALUE buf = Qfalse; VM_ASSERT(argc == 0); argv = &buf; } #endif MEMCPY(nargv + 1, argv, VALUE, argc); ++argc; argv = nargv; klass = CLASS_OF(obj); if (!klass) goto missing; me = rb_callable_method_entry(klass, idMethodMissing); if (!me || METHOD_ENTRY_BASIC(me)) goto missing; vm_passed_block_handler_set(ec, block_handler); result = rb_vm_call_kw(ec, obj, idMethodMissing, argc, argv, me, kw_splat); if (work) ALLOCV_END(work); return result; missing: raise_method_missing(ec, argc, argv, obj, call_status | MISSING_MISSING); UNREACHABLE_RETURN(Qundef); } static inline VALUE rb_funcallv_scope(VALUE recv, ID mid, int argc, const VALUE *argv, call_type scope) { rb_execution_context_t *ec = GET_EC(); struct rb_callinfo ci; scope_to_ci(scope, mid, argc, &ci); const struct rb_callcache *cc = gccct_method_search(ec, recv, mid, &ci); VALUE self = ec->cfp->self; if (LIKELY(cc) && LIKELY(rb_method_call_status(ec, vm_cc_cme(cc), scope, self) == MISSING_NONE)) { // fastpath return vm_call0_cc(ec, recv, mid, argc, argv, cc, false); } else { return rb_call0(ec, recv, mid, argc, argv, scope, self); } } #ifdef rb_funcallv #undef rb_funcallv #endif VALUE rb_funcallv(VALUE recv, ID mid, int argc, const VALUE *argv) { VM_ASSERT(ruby_thread_has_gvl_p()); return rb_funcallv_scope(recv, mid, argc, argv, CALL_FCALL); } VALUE rb_funcallv_kw(VALUE recv, ID mid, int argc, const VALUE *argv, int kw_splat) { VM_ASSERT(ruby_thread_has_gvl_p()); return rb_call(recv, mid, argc, argv, kw_splat ? CALL_FCALL_KW : CALL_FCALL); } VALUE rb_apply(VALUE recv, ID mid, VALUE args) { int argc; VALUE *argv, ret; argc = RARRAY_LENINT(args); if (argc >= 0x100) { args = rb_ary_subseq(args, 0, argc); RBASIC_CLEAR_CLASS(args); OBJ_FREEZE(args); ret = rb_call(recv, mid, argc, RARRAY_CONST_PTR(args), CALL_FCALL); RB_GC_GUARD(args); return ret; } argv = ALLOCA_N(VALUE, argc); MEMCPY(argv, RARRAY_CONST_PTR(args), VALUE, argc); return rb_funcallv(recv, mid, argc, argv); } #ifdef rb_funcall #undef rb_funcall #endif VALUE rb_funcall(VALUE recv, ID mid, int n, ...) { VALUE *argv; va_list ar; if (n > 0) { long i; va_start(ar, n); argv = ALLOCA_N(VALUE, n); for (i = 0; i < n; i++) { argv[i] = va_arg(ar, VALUE); } va_end(ar); } else { argv = 0; } return rb_funcallv(recv, mid, n, argv); } /** * Calls a method only if it is the basic method of `ancestor` * otherwise returns Qundef; * @param recv receiver of the method * @param mid an ID that represents the name of the method * @param ancestor the Class that defined the basic method * @param argc the number of arguments * @param argv pointer to an array of method arguments * @param kw_splat bool */ VALUE rb_check_funcall_basic_kw(VALUE recv, ID mid, VALUE ancestor, int argc, const VALUE *argv, int kw_splat) { const rb_callable_method_entry_t *cme; rb_execution_context_t *ec; VALUE klass = CLASS_OF(recv); if (!klass) return Qundef; /* hidden object */ cme = rb_callable_method_entry(klass, mid); if (cme && METHOD_ENTRY_BASIC(cme) && RBASIC_CLASS(cme->defined_class) == ancestor) { ec = GET_EC(); return rb_vm_call0(ec, recv, mid, argc, argv, cme, kw_splat); } return Qundef; } VALUE rb_funcallv_public(VALUE recv, ID mid, int argc, const VALUE *argv) { return rb_funcallv_scope(recv, mid, argc, argv, CALL_PUBLIC); } VALUE rb_funcallv_public_kw(VALUE recv, ID mid, int argc, const VALUE *argv, int kw_splat) { return rb_call(recv, mid, argc, argv, kw_splat ? CALL_PUBLIC_KW : CALL_PUBLIC); } VALUE rb_funcall_passing_block(VALUE recv, ID mid, int argc, const VALUE *argv) { PASS_PASSED_BLOCK_HANDLER(); return rb_funcallv_public(recv, mid, argc, argv); } VALUE rb_funcall_passing_block_kw(VALUE recv, ID mid, int argc, const VALUE *argv, int kw_splat) { PASS_PASSED_BLOCK_HANDLER(); return rb_call(recv, mid, argc, argv, kw_splat ? CALL_PUBLIC_KW : CALL_PUBLIC); } VALUE rb_funcall_with_block(VALUE recv, ID mid, int argc, const VALUE *argv, VALUE passed_procval) { if (!NIL_P(passed_procval)) { vm_passed_block_handler_set(GET_EC(), passed_procval); } return rb_funcallv_public(recv, mid, argc, argv); } VALUE rb_funcall_with_block_kw(VALUE recv, ID mid, int argc, const VALUE *argv, VALUE passed_procval, int kw_splat) { if (!NIL_P(passed_procval)) { vm_passed_block_handler_set(GET_EC(), passed_procval); } return rb_call(recv, mid, argc, argv, kw_splat ? CALL_PUBLIC_KW : CALL_PUBLIC); } static VALUE * current_vm_stack_arg(const rb_execution_context_t *ec, const VALUE *argv) { rb_control_frame_t *prev_cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(ec->cfp); if (RUBY_VM_CONTROL_FRAME_STACK_OVERFLOW_P(ec, prev_cfp)) return NULL; if (prev_cfp->sp + 1 != argv) return NULL; return prev_cfp->sp + 1; } static VALUE send_internal(int argc, const VALUE *argv, VALUE recv, call_type scope) { ID id; VALUE vid; VALUE self; VALUE ret, vargv = 0; rb_execution_context_t *ec = GET_EC(); int public = scope == CALL_PUBLIC || scope == CALL_PUBLIC_KW; if (public) { self = Qundef; } else { self = RUBY_VM_PREVIOUS_CONTROL_FRAME(ec->cfp)->self; } if (argc == 0) { rb_raise(rb_eArgError, "no method name given"); } vid = *argv; id = rb_check_id(&vid); if (!id) { if (rb_method_basic_definition_p(CLASS_OF(recv), idMethodMissing)) { VALUE exc = rb_make_no_method_exception(rb_eNoMethodError, 0, recv, argc, argv, !public); rb_exc_raise(exc); } if (!SYMBOL_P(*argv)) { VALUE *tmp_argv = current_vm_stack_arg(ec, argv); vid = rb_str_intern(vid); if (tmp_argv) { tmp_argv[0] = vid; } else if (argc > 1) { tmp_argv = ALLOCV_N(VALUE, vargv, argc); tmp_argv[0] = vid; MEMCPY(tmp_argv+1, argv+1, VALUE, argc-1); argv = tmp_argv; } else { argv = &vid; } } id = idMethodMissing; ec->method_missing_reason = MISSING_NOENTRY; } else { argv++; argc--; } PASS_PASSED_BLOCK_HANDLER_EC(ec); ret = rb_call0(ec, recv, id, argc, argv, scope, self); ALLOCV_END(vargv); return ret; } static VALUE send_internal_kw(int argc, const VALUE *argv, VALUE recv, call_type scope) { if (rb_keyword_given_p()) { switch (scope) { case CALL_PUBLIC: scope = CALL_PUBLIC_KW; break; case CALL_FCALL: scope = CALL_FCALL_KW; break; default: break; } } return send_internal(argc, argv, recv, scope); } /* * call-seq: * foo.send(symbol [, args...]) -> obj * foo.__send__(symbol [, args...]) -> obj * foo.send(string [, args...]) -> obj * foo.__send__(string [, args...]) -> obj * * Invokes the method identified by _symbol_, passing it any * arguments specified. * When the method is identified by a string, the string is converted * to a symbol. * * BasicObject implements +__send__+, Kernel implements +send+. * __send__ is safer than +send+ * when _obj_ has the same method name like Socket. * See also public_send. * * class Klass * def hello(*args) * "Hello " + args.join(' ') * end * end * k = Klass.new * k.send :hello, "gentle", "readers" #=> "Hello gentle readers" */ VALUE rb_f_send(int argc, VALUE *argv, VALUE recv) { return send_internal_kw(argc, argv, recv, CALL_FCALL); } /* * call-seq: * obj.public_send(symbol [, args...]) -> obj * obj.public_send(string [, args...]) -> obj * * Invokes the method identified by _symbol_, passing it any * arguments specified. Unlike send, public_send calls public * methods only. * When the method is identified by a string, the string is converted * to a symbol. * * 1.public_send(:puts, "hello") # causes NoMethodError */ static VALUE rb_f_public_send(int argc, VALUE *argv, VALUE recv) { return send_internal_kw(argc, argv, recv, CALL_PUBLIC); } /* yield */ static inline VALUE rb_yield_0_kw(int argc, const VALUE * argv, int kw_splat) { return vm_yield(GET_EC(), argc, argv, kw_splat); } static inline VALUE rb_yield_0(int argc, const VALUE * argv) { return vm_yield(GET_EC(), argc, argv, RB_NO_KEYWORDS); } VALUE rb_yield_1(VALUE val) { return rb_yield_0(1, &val); } VALUE rb_yield(VALUE val) { if (UNDEF_P(val)) { return rb_yield_0(0, NULL); } else { return rb_yield_0(1, &val); } } #undef rb_yield_values VALUE rb_yield_values(int n, ...) { if (n == 0) { return rb_yield_0(0, 0); } else { int i; VALUE *argv; va_list args; argv = ALLOCA_N(VALUE, n); va_start(args, n); for (i=0; icfp; EC_PUSH_TAG(ec); state = EC_EXEC_TAG(); if (state == 0) { iter_retry: { VALUE block_handler; if (ifunc) { struct rb_captured_block *captured = VM_CFP_TO_CAPTURED_BLOCK(cfp); captured->code.ifunc = ifunc; block_handler = VM_BH_FROM_IFUNC_BLOCK(captured); } else { block_handler = VM_CF_BLOCK_HANDLER(cfp); } vm_passed_block_handler_set(ec, block_handler); } retval = (*it_proc) (data1); } else if (state == TAG_BREAK || state == TAG_RETRY) { const struct vm_throw_data *const err = (struct vm_throw_data *)ec->errinfo; const rb_control_frame_t *const escape_cfp = THROW_DATA_CATCH_FRAME(err); if (cfp == escape_cfp) { rb_vm_rewind_cfp(ec, cfp); state = 0; ec->tag->state = TAG_NONE; ec->errinfo = Qnil; if (state == TAG_RETRY) goto iter_retry; retval = THROW_DATA_VAL(err); } else if (0) { SDR(); fprintf(stderr, "%p, %p\n", (void *)cfp, (void *)escape_cfp); } } EC_POP_TAG(); if (state) { EC_JUMP_TAG(ec, state); } return retval; } static VALUE rb_iterate_internal(VALUE (* it_proc)(VALUE), VALUE data1, rb_block_call_func_t bl_proc, VALUE data2) { return rb_iterate0(it_proc, data1, bl_proc ? rb_vm_ifunc_proc_new(bl_proc, (void *)data2) : 0, GET_EC()); } VALUE rb_iterate(VALUE (* it_proc)(VALUE), VALUE data1, rb_block_call_func_t bl_proc, VALUE data2) { return rb_iterate_internal(it_proc, data1, bl_proc, data2); } struct iter_method_arg { VALUE obj; ID mid; int argc; const VALUE *argv; int kw_splat; }; static VALUE iterate_method(VALUE obj) { const struct iter_method_arg * arg = (struct iter_method_arg *) obj; return rb_call(arg->obj, arg->mid, arg->argc, arg->argv, arg->kw_splat ? CALL_FCALL_KW : CALL_FCALL); } VALUE rb_block_call_kw(VALUE obj, ID mid, int argc, const VALUE * argv, rb_block_call_func_t bl_proc, VALUE data2, int kw_splat); VALUE rb_block_call(VALUE obj, ID mid, int argc, const VALUE * argv, rb_block_call_func_t bl_proc, VALUE data2) { return rb_block_call_kw(obj, mid, argc, argv, bl_proc, data2, RB_NO_KEYWORDS); } VALUE rb_block_call_kw(VALUE obj, ID mid, int argc, const VALUE * argv, rb_block_call_func_t bl_proc, VALUE data2, int kw_splat) { struct iter_method_arg arg; arg.obj = obj; arg.mid = mid; arg.argc = argc; arg.argv = argv; arg.kw_splat = kw_splat; return rb_iterate_internal(iterate_method, (VALUE)&arg, bl_proc, data2); } /* * A flexible variant of rb_block_call and rb_block_call_kw. * This function accepts flags: * * RB_NO_KEYWORDS, RB_PASS_KEYWORDS, RB_PASS_CALLED_KEYWORDS: * Works as the same as rb_block_call_kw. * * RB_BLOCK_NO_USE_PACKED_ARGS: * The given block ("bl_proc") does not use "yielded_arg" of rb_block_call_func_t. * Instead, the block accesses the yielded arguments via "argc" and "argv". * This flag allows the called method to yield arguments without allocating an Array. */ VALUE rb_block_call2(VALUE obj, ID mid, int argc, const VALUE *argv, rb_block_call_func_t bl_proc, VALUE data2, long flags) { struct iter_method_arg arg; arg.obj = obj; arg.mid = mid; arg.argc = argc; arg.argv = argv; arg.kw_splat = flags & 1; struct vm_ifunc *ifunc = rb_vm_ifunc_proc_new(bl_proc, (void *)data2); if (flags & RB_BLOCK_NO_USE_PACKED_ARGS) ifunc->flags |= IFUNC_YIELD_OPTIMIZABLE; return rb_iterate0(iterate_method, (VALUE)&arg, ifunc, GET_EC()); } VALUE rb_lambda_call(VALUE obj, ID mid, int argc, const VALUE *argv, rb_block_call_func_t bl_proc, int min_argc, int max_argc, VALUE data2) { struct iter_method_arg arg; struct vm_ifunc *block; if (!bl_proc) rb_raise(rb_eArgError, "NULL lambda function"); arg.obj = obj; arg.mid = mid; arg.argc = argc; arg.argv = argv; arg.kw_splat = 0; block = rb_vm_ifunc_new(bl_proc, (void *)data2, min_argc, max_argc); return rb_iterate0(iterate_method, (VALUE)&arg, block, GET_EC()); } static VALUE iterate_check_method(VALUE obj) { const struct iter_method_arg * arg = (struct iter_method_arg *) obj; return rb_check_funcall(arg->obj, arg->mid, arg->argc, arg->argv); } VALUE rb_check_block_call(VALUE obj, ID mid, int argc, const VALUE *argv, rb_block_call_func_t bl_proc, VALUE data2) { struct iter_method_arg arg; arg.obj = obj; arg.mid = mid; arg.argc = argc; arg.argv = argv; arg.kw_splat = 0; return rb_iterate_internal(iterate_check_method, (VALUE)&arg, bl_proc, data2); } VALUE rb_each(VALUE obj) { return rb_call(obj, idEach, 0, 0, CALL_FCALL); } static VALUE eval_default_path = Qfalse; #define EVAL_LOCATION_MARK "eval at " #define EVAL_LOCATION_MARK_LEN (int)rb_strlen_lit(EVAL_LOCATION_MARK) static VALUE get_eval_default_path(void) { int location_lineno; VALUE location_path = rb_source_location(&location_lineno); if (!NIL_P(location_path)) { return rb_fstring(rb_sprintf("("EVAL_LOCATION_MARK"%"PRIsVALUE":%d)", location_path, location_lineno)); } if (!eval_default_path) { eval_default_path = rb_fstring_lit("(eval)"); rb_vm_register_global_object(eval_default_path); } return eval_default_path; } static const rb_iseq_t * pm_eval_make_iseq(VALUE src, VALUE fname, int line, const struct rb_block *base_block) { const rb_iseq_t *const parent = vm_block_iseq(base_block); const rb_iseq_t *iseq = parent; VALUE name = rb_fstring_lit(""); // Conditionally enable coverage depending on the current mode: int coverage_enabled = ((rb_get_coverage_mode() & COVERAGE_TARGET_EVAL) != 0) ? 1 : 0; if (!fname) { fname = rb_source_location(&line); } if (!UNDEF_P(fname)) { if (!NIL_P(fname)) fname = rb_fstring(fname); } else { fname = get_eval_default_path(); coverage_enabled = 0; } pm_parse_result_t result = { 0 }; pm_options_line_set(&result.options, line); result.node.coverage_enabled = coverage_enabled; // Cout scopes, one for each parent iseq, plus one for our local scope int scopes_count = 0; do { scopes_count++; } while ((iseq = ISEQ_BODY(iseq)->parent_iseq) && (ISEQ_BODY(iseq)->type != ISEQ_TYPE_TOP)); pm_options_scopes_init(&result.options, scopes_count + 1); // Walk over the scope tree, adding known locals at the correct depths. The // scope array should be deepest -> shallowest. so lower indexes in the // scopes array refer to root nodes on the tree, and higher indexes are the // leaf nodes. iseq = parent; for (int scopes_index = 0; scopes_index < scopes_count; scopes_index++) { int locals_count = ISEQ_BODY(iseq)->local_table_size; pm_options_scope_t *options_scope = &result.options.scopes[scopes_count - scopes_index - 1]; pm_options_scope_init(options_scope, locals_count); for (int local_index = 0; local_index < locals_count; local_index++) { pm_string_t *scope_local = &options_scope->locals[local_index]; ID local = ISEQ_BODY(iseq)->local_table[local_index]; if (rb_is_local_id(local)) { const char *name = rb_id2name(local); size_t length = strlen(name); // Explicitly skip numbered parameters. These should not be sent // into the eval. if (length == 2 && name[0] == '_' && name[1] >= '1' && name[1] <= '9') { continue; } pm_string_constant_init(scope_local, name, strlen(name)); } } iseq = ISEQ_BODY(iseq)->parent_iseq; } // Add our empty local scope at the very end of the array for our eval // scope's locals. pm_options_scope_init(&result.options.scopes[scopes_count], 0); VALUE error = pm_parse_string(&result, src, fname); // If the parse failed, clean up and raise. if (error != Qnil) { pm_parse_result_free(&result); rb_exc_raise(error); } // Create one scope node for each scope passed in, initialize the local // lookup table with all the local variable information attached to the // scope used by the parser. pm_scope_node_t *node = &result.node; iseq = parent; for (int scopes_index = 0; scopes_index < scopes_count; scopes_index++) { pm_scope_node_t *parent_scope = ruby_xcalloc(1, sizeof(pm_scope_node_t)); RUBY_ASSERT(parent_scope != NULL); pm_options_scope_t *options_scope = &result.options.scopes[scopes_count - scopes_index - 1]; parent_scope->coverage_enabled = coverage_enabled; parent_scope->parser = &result.parser; parent_scope->index_lookup_table = st_init_numtable(); int locals_count = ISEQ_BODY(iseq)->local_table_size; parent_scope->local_table_for_iseq_size = locals_count; pm_constant_id_list_init(&parent_scope->locals); for (int local_index = 0; local_index < locals_count; local_index++) { const pm_string_t *scope_local = &options_scope->locals[local_index]; pm_constant_id_t constant_id = 0; if (pm_string_length(scope_local) > 0) { constant_id = pm_constant_pool_insert_constant( &result.parser.constant_pool, pm_string_source(scope_local), pm_string_length(scope_local)); st_insert(parent_scope->index_lookup_table, (st_data_t)constant_id, (st_data_t)local_index); } pm_constant_id_list_append(&parent_scope->locals, constant_id); } node->previous = parent_scope; node = parent_scope; iseq = ISEQ_BODY(iseq)->parent_iseq; } iseq = pm_iseq_new_eval(&result.node, name, fname, Qnil, line, parent, 0); pm_scope_node_t *prev = result.node.previous; while (prev) { pm_scope_node_t *next = prev->previous; ruby_xfree(prev); prev = next; } pm_parse_result_free(&result); rb_exec_event_hook_script_compiled(GET_EC(), iseq, src); return iseq; } static const rb_iseq_t * eval_make_iseq(VALUE src, VALUE fname, int line, const struct rb_block *base_block) { if (*rb_ruby_prism_ptr()) { return pm_eval_make_iseq(src, fname, line, base_block); } const VALUE parser = rb_parser_new(); const rb_iseq_t *const parent = vm_block_iseq(base_block); rb_iseq_t *iseq = NULL; VALUE ast_value; rb_ast_t *ast; int isolated_depth = 0; // Conditionally enable coverage depending on the current mode: int coverage_enabled = (rb_get_coverage_mode() & COVERAGE_TARGET_EVAL) != 0; { int depth = 1; const VALUE *ep = vm_block_ep(base_block); while (1) { if (VM_ENV_FLAGS(ep, VM_ENV_FLAG_ISOLATED)) { isolated_depth = depth; break; } else if (VM_ENV_LOCAL_P(ep)) { break; } ep = VM_ENV_PREV_EP(ep); depth++; } } if (!fname) { fname = rb_source_location(&line); } if (!UNDEF_P(fname)) { if (!NIL_P(fname)) fname = rb_fstring(fname); } else { fname = get_eval_default_path(); coverage_enabled = FALSE; } rb_parser_set_context(parser, parent, FALSE); if (ruby_vm_keep_script_lines) rb_parser_set_script_lines(parser); ast_value = rb_parser_compile_string_path(parser, fname, src, line); ast = rb_ruby_ast_data_get(ast_value); if (ast->body.root) { ast->body.coverage_enabled = coverage_enabled; iseq = rb_iseq_new_eval(ast_value, ISEQ_BODY(parent)->location.label, fname, Qnil, line, parent, isolated_depth); } rb_ast_dispose(ast); if (iseq != NULL) { if (0 && iseq) { /* for debug */ VALUE disasm = rb_iseq_disasm(iseq); printf("%s\n", StringValuePtr(disasm)); } rb_exec_event_hook_script_compiled(GET_EC(), iseq, src); } return iseq; } static VALUE eval_string_with_cref(VALUE self, VALUE src, rb_cref_t *cref, VALUE file, int line) { rb_execution_context_t *ec = GET_EC(); struct rb_block block; const rb_iseq_t *iseq; rb_control_frame_t *cfp = rb_vm_get_ruby_level_next_cfp(ec, ec->cfp); if (!cfp) { rb_raise(rb_eRuntimeError, "Can't eval on top of Fiber or Thread"); } block.as.captured = *VM_CFP_TO_CAPTURED_BLOCK(cfp); block.as.captured.self = self; block.as.captured.code.iseq = cfp->iseq; block.type = block_type_iseq; iseq = eval_make_iseq(src, file, line, &block); if (!iseq) { rb_exc_raise(ec->errinfo); } /* TODO: what the code checking? */ if (!cref && block.as.captured.code.val) { rb_cref_t *orig_cref = vm_get_cref(vm_block_ep(&block)); cref = vm_cref_dup(orig_cref); } vm_set_eval_stack(ec, iseq, cref, &block); /* kick */ return vm_exec(ec); } static VALUE eval_string_with_scope(VALUE scope, VALUE src, VALUE file, int line) { rb_execution_context_t *ec = GET_EC(); rb_binding_t *bind = Check_TypedStruct(scope, &ruby_binding_data_type); const rb_iseq_t *iseq = eval_make_iseq(src, file, line, &bind->block); if (!iseq) { rb_exc_raise(ec->errinfo); } vm_set_eval_stack(ec, iseq, NULL, &bind->block); /* save new env */ if (ISEQ_BODY(iseq)->local_table_size > 0) { vm_bind_update_env(scope, bind, vm_make_env_object(ec, ec->cfp)); } /* kick */ return vm_exec(ec); } /* * call-seq: * eval(string [, binding [, filename [,lineno]]]) -> obj * * Evaluates the Ruby expression(s) in string. If * binding is given, which must be a Binding object, the * evaluation is performed in its context. If the optional * filename and lineno parameters are present, they * will be used when reporting syntax errors. * * def get_binding(str) * return binding * end * str = "hello" * eval "str + ' Fred'" #=> "hello Fred" * eval "str + ' Fred'", get_binding("bye") #=> "bye Fred" */ VALUE rb_f_eval(int argc, const VALUE *argv, VALUE self) { VALUE src, scope, vfile, vline; VALUE file = Qundef; int line = 1; rb_scan_args(argc, argv, "13", &src, &scope, &vfile, &vline); StringValue(src); if (argc >= 3) { StringValue(vfile); } if (argc >= 4) { line = NUM2INT(vline); } if (!NIL_P(vfile)) file = vfile; if (NIL_P(scope)) return eval_string_with_cref(self, src, NULL, file, line); else return eval_string_with_scope(scope, src, file, line); } /** @note This function name is not stable. */ VALUE ruby_eval_string_from_file(const char *str, const char *filename) { VALUE file = filename ? rb_str_new_cstr(filename) : 0; rb_execution_context_t *ec = GET_EC(); rb_control_frame_t *cfp = ec ? rb_vm_get_ruby_level_next_cfp(ec, ec->cfp) : NULL; VALUE self = cfp ? cfp->self : rb_vm_top_self(); return eval_string_with_cref(self, rb_str_new2(str), NULL, file, 1); } VALUE rb_eval_string(const char *str) { return ruby_eval_string_from_file(str, "eval"); } static VALUE eval_string_protect(VALUE str) { return rb_eval_string((char *)str); } VALUE rb_eval_string_protect(const char *str, int *pstate) { return rb_protect(eval_string_protect, (VALUE)str, pstate); } struct eval_string_wrap_arg { VALUE top_self; VALUE klass; const char *str; }; static VALUE eval_string_wrap_protect(VALUE data) { const struct eval_string_wrap_arg *const arg = (struct eval_string_wrap_arg*)data; rb_cref_t *cref = rb_vm_cref_new_toplevel(); cref->klass_or_self = arg->klass; return eval_string_with_cref(arg->top_self, rb_str_new_cstr(arg->str), cref, rb_str_new_cstr("eval"), 1); } VALUE rb_eval_string_wrap(const char *str, int *pstate) { int state; rb_thread_t *th = GET_THREAD(); VALUE self = th->top_self; VALUE wrapper = th->top_wrapper; VALUE val; struct eval_string_wrap_arg data; th->top_wrapper = rb_module_new(); th->top_self = rb_obj_clone(rb_vm_top_self()); rb_extend_object(th->top_self, th->top_wrapper); data.top_self = th->top_self; data.klass = th->top_wrapper; data.str = str; val = rb_protect(eval_string_wrap_protect, (VALUE)&data, &state); th->top_self = self; th->top_wrapper = wrapper; if (pstate) { *pstate = state; } else if (state != TAG_NONE) { EC_JUMP_TAG(th->ec, state); } return val; } VALUE rb_eval_cmd_kw(VALUE cmd, VALUE arg, int kw_splat) { enum ruby_tag_type state; volatile VALUE val = Qnil; /* OK */ rb_execution_context_t * volatile ec = GET_EC(); EC_PUSH_TAG(ec); if ((state = EC_EXEC_TAG()) == TAG_NONE) { if (!RB_TYPE_P(cmd, T_STRING)) { val = rb_funcallv_kw(cmd, idCall, RARRAY_LENINT(arg), RARRAY_CONST_PTR(arg), kw_splat); } else { val = eval_string_with_cref(rb_vm_top_self(), cmd, NULL, 0, 0); } } EC_POP_TAG(); if (state) EC_JUMP_TAG(ec, state); return val; } /* block eval under the class/module context */ static VALUE yield_under(VALUE self, int singleton, int argc, const VALUE *argv, int kw_splat) { rb_execution_context_t *ec = GET_EC(); rb_control_frame_t *cfp = ec->cfp; VALUE block_handler = VM_CF_BLOCK_HANDLER(cfp); VALUE new_block_handler = 0; const struct rb_captured_block *captured = NULL; struct rb_captured_block new_captured; const VALUE *ep = NULL; rb_cref_t *cref; int is_lambda = FALSE; if (block_handler != VM_BLOCK_HANDLER_NONE) { again: switch (vm_block_handler_type(block_handler)) { case block_handler_type_iseq: captured = VM_BH_TO_CAPT_BLOCK(block_handler); new_captured = *captured; new_block_handler = VM_BH_FROM_ISEQ_BLOCK(&new_captured); break; case block_handler_type_ifunc: captured = VM_BH_TO_CAPT_BLOCK(block_handler); new_captured = *captured; new_block_handler = VM_BH_FROM_IFUNC_BLOCK(&new_captured); break; case block_handler_type_proc: is_lambda = rb_proc_lambda_p(block_handler) != Qfalse; block_handler = vm_proc_to_block_handler(VM_BH_TO_PROC(block_handler)); goto again; case block_handler_type_symbol: return rb_sym_proc_call(SYM2ID(VM_BH_TO_SYMBOL(block_handler)), argc, argv, kw_splat, VM_BLOCK_HANDLER_NONE); } new_captured.self = self; ep = captured->ep; VM_FORCE_WRITE_SPECIAL_CONST(&VM_CF_LEP(ec->cfp)[VM_ENV_DATA_INDEX_SPECVAL], new_block_handler); } VM_ASSERT(singleton || RB_TYPE_P(self, T_MODULE) || RB_TYPE_P(self, T_CLASS)); cref = vm_cref_push(ec, self, ep, TRUE, singleton); return vm_yield_with_cref(ec, argc, argv, kw_splat, cref, is_lambda); } VALUE rb_yield_refine_block(VALUE refinement, VALUE refinements) { rb_execution_context_t *ec = GET_EC(); VALUE block_handler = VM_CF_BLOCK_HANDLER(ec->cfp); if (vm_block_handler_type(block_handler) != block_handler_type_iseq) { rb_bug("rb_yield_refine_block: an iseq block is required"); } else { const struct rb_captured_block *captured = VM_BH_TO_ISEQ_BLOCK(block_handler); struct rb_captured_block new_captured = *captured; const VALUE *const argv = &new_captured.self; /* dummy to suppress nonnull warning from gcc */ VALUE new_block_handler = VM_BH_FROM_ISEQ_BLOCK(&new_captured); const VALUE *ep = captured->ep; rb_cref_t *cref = vm_cref_push(ec, refinement, ep, TRUE, FALSE); CREF_REFINEMENTS_SET(cref, refinements); VM_FORCE_WRITE_SPECIAL_CONST(&VM_CF_LEP(ec->cfp)[VM_ENV_DATA_INDEX_SPECVAL], new_block_handler); new_captured.self = refinement; return vm_yield_with_cref(ec, 0, argv, RB_NO_KEYWORDS, cref, FALSE); } } /* string eval under the class/module context */ static VALUE eval_under(VALUE self, int singleton, VALUE src, VALUE file, int line) { rb_cref_t *cref = vm_cref_push(GET_EC(), self, NULL, FALSE, singleton); StringValue(src); return eval_string_with_cref(self, src, cref, file, line); } static VALUE specific_eval(int argc, const VALUE *argv, VALUE self, int singleton, int kw_splat) { if (rb_block_given_p()) { rb_check_arity(argc, 0, 0); return yield_under(self, singleton, 1, &self, kw_splat); } else { VALUE file = Qnil; int line = 1; VALUE code; rb_check_arity(argc, 1, 3); code = argv[0]; StringValue(code); if (argc > 2) line = NUM2INT(argv[2]); if (argc > 1) { file = argv[1]; if (!NIL_P(file)) StringValue(file); } if (NIL_P(file)) { file = get_eval_default_path(); } return eval_under(self, singleton, code, file, line); } } /* * call-seq: * obj.instance_eval(string [, filename [, lineno]] ) -> obj * obj.instance_eval {|obj| block } -> obj * * Evaluates a string containing Ruby source code, or the given block, * within the context of the receiver (_obj_). In order to set the * context, the variable +self+ is set to _obj_ while * the code is executing, giving the code access to _obj_'s * instance variables and private methods. * * When instance_eval is given a block, _obj_ is also * passed in as the block's only argument. * * When instance_eval is given a +String+, the optional * second and third parameters supply a filename and starting line number * that are used when reporting compilation errors. * * class KlassWithSecret * def initialize * @secret = 99 * end * private * def the_secret * "Ssssh! The secret is #{@secret}." * end * end * k = KlassWithSecret.new * k.instance_eval { @secret } #=> 99 * k.instance_eval { the_secret } #=> "Ssssh! The secret is 99." * k.instance_eval {|obj| obj == self } #=> true */ static VALUE rb_obj_instance_eval_internal(int argc, const VALUE *argv, VALUE self) { return specific_eval(argc, argv, self, TRUE, RB_PASS_CALLED_KEYWORDS); } VALUE rb_obj_instance_eval(int argc, const VALUE *argv, VALUE self) { return specific_eval(argc, argv, self, TRUE, RB_NO_KEYWORDS); } /* * call-seq: * obj.instance_exec(arg...) {|var...| block } -> obj * * Executes the given block within the context of the receiver * (_obj_). In order to set the context, the variable +self+ is set * to _obj_ while the code is executing, giving the code access to * _obj_'s instance variables. Arguments are passed as block parameters. * * class KlassWithSecret * def initialize * @secret = 99 * end * end * k = KlassWithSecret.new * k.instance_exec(5) {|x| @secret+x } #=> 104 */ static VALUE rb_obj_instance_exec_internal(int argc, const VALUE *argv, VALUE self) { return yield_under(self, TRUE, argc, argv, RB_PASS_CALLED_KEYWORDS); } VALUE rb_obj_instance_exec(int argc, const VALUE *argv, VALUE self) { return yield_under(self, TRUE, argc, argv, RB_NO_KEYWORDS); } /* * call-seq: * mod.class_eval(string [, filename [, lineno]]) -> obj * mod.class_eval {|mod| block } -> obj * mod.module_eval(string [, filename [, lineno]]) -> obj * mod.module_eval {|mod| block } -> obj * * Evaluates the string or block in the context of _mod_, except that when * a block is given, constant/class variable lookup is not affected. This * can be used to add methods to a class. module_eval returns * the result of evaluating its argument. The optional _filename_ and * _lineno_ parameters set the text for error messages. * * class Thing * end * a = %q{def hello() "Hello there!" end} * Thing.module_eval(a) * puts Thing.new.hello() * Thing.module_eval("invalid code", "dummy", 123) * * produces: * * Hello there! * dummy:123:in `module_eval': undefined local variable * or method `code' for Thing:Class */ static VALUE rb_mod_module_eval_internal(int argc, const VALUE *argv, VALUE mod) { return specific_eval(argc, argv, mod, FALSE, RB_PASS_CALLED_KEYWORDS); } VALUE rb_mod_module_eval(int argc, const VALUE *argv, VALUE mod) { return specific_eval(argc, argv, mod, FALSE, RB_NO_KEYWORDS); } /* * call-seq: * mod.module_exec(arg...) {|var...| block } -> obj * mod.class_exec(arg...) {|var...| block } -> obj * * Evaluates the given block in the context of the class/module. * The method defined in the block will belong to the receiver. * Any arguments passed to the method will be passed to the block. * This can be used if the block needs to access instance variables. * * class Thing * end * Thing.class_exec{ * def hello() "Hello there!" end * } * puts Thing.new.hello() * * produces: * * Hello there! */ static VALUE rb_mod_module_exec_internal(int argc, const VALUE *argv, VALUE mod) { return yield_under(mod, FALSE, argc, argv, RB_PASS_CALLED_KEYWORDS); } VALUE rb_mod_module_exec(int argc, const VALUE *argv, VALUE mod) { return yield_under(mod, FALSE, argc, argv, RB_NO_KEYWORDS); } /* * Document-class: UncaughtThrowError * * Raised when +throw+ is called with a _tag_ which does not have * corresponding +catch+ block. * * throw "foo", "bar" * * raises the exception: * * UncaughtThrowError: uncaught throw "foo" */ static VALUE uncaught_throw_init(int argc, const VALUE *argv, VALUE exc) { rb_check_arity(argc, 2, UNLIMITED_ARGUMENTS); rb_call_super(argc - 2, argv + 2); rb_ivar_set(exc, id_tag, argv[0]); rb_ivar_set(exc, id_value, argv[1]); return exc; } /* * call-seq: * uncaught_throw.tag -> obj * * Return the tag object which was called for. */ static VALUE uncaught_throw_tag(VALUE exc) { return rb_ivar_get(exc, id_tag); } /* * call-seq: * uncaught_throw.value -> obj * * Return the return value which was called for. */ static VALUE uncaught_throw_value(VALUE exc) { return rb_ivar_get(exc, id_value); } /* * call-seq: * uncaught_throw.to_s -> string * * Returns formatted message with the inspected tag. */ static VALUE uncaught_throw_to_s(VALUE exc) { VALUE mesg = rb_attr_get(exc, id_mesg); VALUE tag = uncaught_throw_tag(exc); return rb_str_format(1, &tag, mesg); } /* * call-seq: * throw(tag [, obj]) * * Transfers control to the end of the active +catch+ block * waiting for _tag_. Raises +UncaughtThrowError+ if there * is no +catch+ block for the _tag_. The optional second * parameter supplies a return value for the +catch+ block, * which otherwise defaults to +nil+. For examples, see * Kernel::catch. */ static VALUE rb_f_throw(int argc, VALUE *argv, VALUE _) { VALUE tag, value; rb_scan_args(argc, argv, "11", &tag, &value); rb_throw_obj(tag, value); UNREACHABLE_RETURN(Qnil); } void rb_throw_obj(VALUE tag, VALUE value) { rb_execution_context_t *ec = GET_EC(); struct rb_vm_tag *tt = ec->tag; while (tt) { if (tt->tag == tag) { tt->retval = value; break; } tt = tt->prev; } if (!tt) { VALUE desc[3]; desc[0] = tag; desc[1] = value; desc[2] = rb_str_new_cstr("uncaught throw %p"); rb_exc_raise(rb_class_new_instance(numberof(desc), desc, rb_eUncaughtThrow)); } ec->errinfo = (VALUE)THROW_DATA_NEW(tag, NULL, TAG_THROW); EC_JUMP_TAG(ec, TAG_THROW); } void rb_throw(const char *tag, VALUE val) { rb_throw_obj(rb_sym_intern_ascii_cstr(tag), val); } static VALUE catch_i(RB_BLOCK_CALL_FUNC_ARGLIST(tag, _)) { return rb_yield_0(1, &tag); } /* * call-seq: * catch([tag]) {|tag| block } -> obj * * +catch+ executes its block. If +throw+ is not called, the block executes * normally, and +catch+ returns the value of the last expression evaluated. * * catch(1) { 123 } # => 123 * * If throw(tag2, val) is called, Ruby searches up its stack for * a +catch+ block whose +tag+ has the same +object_id+ as _tag2_. When found, * the block stops executing and returns _val_ (or +nil+ if no second argument * was given to +throw+). * * catch(1) { throw(1, 456) } # => 456 * catch(1) { throw(1) } # => nil * * When +tag+ is passed as the first argument, +catch+ yields it as the * parameter of the block. * * catch(1) {|x| x + 2 } # => 3 * * When no +tag+ is given, +catch+ yields a new unique object (as from * +Object.new+) as the block parameter. This object can then be used as the * argument to +throw+, and will match the correct +catch+ block. * * catch do |obj_A| * catch do |obj_B| * throw(obj_B, 123) * puts "This puts is not reached" * end * * puts "This puts is displayed" * 456 * end * * # => 456 * * catch do |obj_A| * catch do |obj_B| * throw(obj_A, 123) * puts "This puts is still not reached" * end * * puts "Now this puts is also not reached" * 456 * end * * # => 123 */ static VALUE rb_f_catch(int argc, VALUE *argv, VALUE self) { VALUE tag = rb_check_arity(argc, 0, 1) ? argv[0] : rb_obj_alloc(rb_cObject); return rb_catch_obj(tag, catch_i, 0); } VALUE rb_catch(const char *tag, rb_block_call_func_t func, VALUE data) { VALUE vtag = tag ? rb_sym_intern_ascii_cstr(tag) : rb_obj_alloc(rb_cObject); return rb_catch_obj(vtag, func, data); } static VALUE vm_catch_protect(VALUE tag, rb_block_call_func *func, VALUE data, enum ruby_tag_type *stateptr, rb_execution_context_t *volatile ec) { enum ruby_tag_type state; VALUE val = Qnil; /* OK */ rb_control_frame_t *volatile saved_cfp = ec->cfp; EC_PUSH_TAG(ec); _tag.tag = tag; if ((state = EC_EXEC_TAG()) == TAG_NONE) { /* call with argc=1, argv = [tag], block = Qnil to insure compatibility */ val = (*func)(tag, data, 1, (const VALUE *)&tag, Qnil); } else if (state == TAG_THROW && THROW_DATA_VAL((struct vm_throw_data *)ec->errinfo) == tag) { rb_vm_rewind_cfp(ec, saved_cfp); val = ec->tag->retval; ec->errinfo = Qnil; state = 0; } EC_POP_TAG(); if (stateptr) *stateptr = state; return val; } VALUE rb_catch_protect(VALUE t, rb_block_call_func *func, VALUE data, enum ruby_tag_type *stateptr) { return vm_catch_protect(t, func, data, stateptr, GET_EC()); } VALUE rb_catch_obj(VALUE t, rb_block_call_func_t func, VALUE data) { enum ruby_tag_type state; rb_execution_context_t *ec = GET_EC(); VALUE val = vm_catch_protect(t, (rb_block_call_func *)func, data, &state, ec); if (state) EC_JUMP_TAG(ec, state); return val; } static void local_var_list_init(struct local_var_list *vars) { vars->tbl = rb_ident_hash_new(); RBASIC_CLEAR_CLASS(vars->tbl); } static VALUE local_var_list_finish(struct local_var_list *vars) { /* TODO: not to depend on the order of st_table */ VALUE ary = rb_hash_keys(vars->tbl); rb_hash_clear(vars->tbl); vars->tbl = 0; return ary; } static int local_var_list_update(st_data_t *key, st_data_t *value, st_data_t arg, int existing) { if (existing) return ST_STOP; *value = (st_data_t)Qtrue; /* INT2FIX(arg) */ return ST_CONTINUE; } static void local_var_list_add(const struct local_var_list *vars, ID lid) { if (lid && rb_is_local_id(lid)) { /* should skip temporary variable */ st_data_t idx = 0; /* tbl->num_entries */ rb_hash_stlike_update(vars->tbl, ID2SYM(lid), local_var_list_update, idx); } } /* * call-seq: * local_variables -> array * * Returns the names of the current local variables. * * fred = 1 * for i in 1..10 * # ... * end * local_variables #=> [:fred, :i] */ static VALUE rb_f_local_variables(VALUE _) { struct local_var_list vars; rb_execution_context_t *ec = GET_EC(); rb_control_frame_t *cfp = vm_get_ruby_level_caller_cfp(ec, RUBY_VM_PREVIOUS_CONTROL_FRAME(ec->cfp)); unsigned int i; local_var_list_init(&vars); while (cfp) { if (cfp->iseq) { for (i = 0; i < ISEQ_BODY(cfp->iseq)->local_table_size; i++) { local_var_list_add(&vars, ISEQ_BODY(cfp->iseq)->local_table[i]); } } if (!VM_ENV_LOCAL_P(cfp->ep)) { /* block */ const VALUE *ep = VM_CF_PREV_EP(cfp); if (vm_collect_local_variables_in_heap(ep, &vars)) { break; } else { while (cfp->ep != ep) { cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp); } } } else { break; } } return local_var_list_finish(&vars); } /* * call-seq: * block_given? -> true or false * * Returns true if yield would execute a * block in the current context. The iterator? form * is mildly deprecated. * * def try * if block_given? * yield * else * "no block" * end * end * try #=> "no block" * try { "hello" } #=> "hello" * try do "hello" end #=> "hello" */ static VALUE rb_f_block_given_p(VALUE _) { rb_execution_context_t *ec = GET_EC(); rb_control_frame_t *cfp = ec->cfp; cfp = vm_get_ruby_level_caller_cfp(ec, RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp)); return RBOOL(cfp != NULL && VM_CF_BLOCK_HANDLER(cfp) != VM_BLOCK_HANDLER_NONE); } /* * call-seq: * iterator? -> true or false * * Deprecated. Use block_given? instead. */ static VALUE rb_f_iterator_p(VALUE self) { rb_warn_deprecated("iterator?", "block_given?"); return rb_f_block_given_p(self); } VALUE rb_current_realfilepath(void) { const rb_execution_context_t *ec = GET_EC(); rb_control_frame_t *cfp = ec->cfp; cfp = vm_get_ruby_level_caller_cfp(ec, RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp)); if (cfp != NULL) { VALUE path = rb_iseq_realpath(cfp->iseq); if (RTEST(path)) return path; // eval context path = rb_iseq_path(cfp->iseq); if (path == eval_default_path) { return Qnil; } // [Feature #19755] implicit eval location is "(eval at #{__FILE__}:#{__LINE__})" const long len = RSTRING_LEN(path); if (len > EVAL_LOCATION_MARK_LEN+1) { const char *const ptr = RSTRING_PTR(path); if (ptr[len - 1] == ')' && memcmp(ptr, "("EVAL_LOCATION_MARK, EVAL_LOCATION_MARK_LEN+1) == 0) { return Qnil; } } return path; } return Qnil; } void Init_vm_eval(void) { rb_define_global_function("eval", rb_f_eval, -1); rb_define_global_function("local_variables", rb_f_local_variables, 0); rb_define_global_function("iterator?", rb_f_iterator_p, 0); rb_define_global_function("block_given?", rb_f_block_given_p, 0); rb_define_global_function("catch", rb_f_catch, -1); rb_define_global_function("throw", rb_f_throw, -1); rb_define_method(rb_cBasicObject, "instance_eval", rb_obj_instance_eval_internal, -1); rb_define_method(rb_cBasicObject, "instance_exec", rb_obj_instance_exec_internal, -1); rb_define_private_method(rb_cBasicObject, "method_missing", rb_method_missing, -1); #if 1 rb_add_method(rb_cBasicObject, id__send__, VM_METHOD_TYPE_OPTIMIZED, (void *)OPTIMIZED_METHOD_TYPE_SEND, METHOD_VISI_PUBLIC); rb_add_method(rb_mKernel, idSend, VM_METHOD_TYPE_OPTIMIZED, (void *)OPTIMIZED_METHOD_TYPE_SEND, METHOD_VISI_PUBLIC); #else rb_define_method(rb_cBasicObject, "__send__", rb_f_send, -1); rb_define_method(rb_mKernel, "send", rb_f_send, -1); #endif rb_define_method(rb_mKernel, "public_send", rb_f_public_send, -1); rb_define_method(rb_cModule, "module_exec", rb_mod_module_exec_internal, -1); rb_define_method(rb_cModule, "class_exec", rb_mod_module_exec_internal, -1); rb_define_method(rb_cModule, "module_eval", rb_mod_module_eval_internal, -1); rb_define_method(rb_cModule, "class_eval", rb_mod_module_eval_internal, -1); rb_eUncaughtThrow = rb_define_class("UncaughtThrowError", rb_eArgError); rb_define_method(rb_eUncaughtThrow, "initialize", uncaught_throw_init, -1); rb_define_method(rb_eUncaughtThrow, "tag", uncaught_throw_tag, 0); rb_define_method(rb_eUncaughtThrow, "value", uncaught_throw_value, 0); rb_define_method(rb_eUncaughtThrow, "to_s", uncaught_throw_to_s, 0); id_result = rb_intern_const("result"); id_tag = rb_intern_const("tag"); id_value = rb_intern_const("value"); }