/* Resolve a bound function on value stack top to a non-bound target * (leave other values as is). */ DUK_INTERNAL void duk_resolve_nonbound_function(duk_context *ctx) { duk_tval *tv; tv = DUK_GET_TVAL_NEGIDX(ctx, -1); if (DUK_TVAL_IS_OBJECT(tv)) { duk_hobject *h; h = DUK_TVAL_GET_OBJECT(tv); DUK_ASSERT(h != NULL); if (DUK_HOBJECT_HAS_BOUNDFUNC(h)) { duk_push_tval(ctx, &((duk_hboundfunc *) h)->target); duk_replace(ctx, -2); #if 0 DUK_TVAL_SET_TVAL(tv, &((duk_hboundfunc *) h)->target); DUK_TVAL_INCREF(thr, tv); DUK_HOBJECT_DECREF_NORZ(thr, h); #endif /* Rely on Function.prototype.bind() on never creating a bound * function whose target is not proper. This is now safe * because the target is not even an internal property but a * struct member. */ DUK_ASSERT(duk_is_lightfunc(ctx, -1) || duk_is_callable(ctx, -1)); } } /* Lightfuncs cannot be bound but are always callable and * constructable. */ }
DUK_INTERNAL duk_ret_t duk_bi_object_constructor_seal_freeze_shared(duk_context *ctx) { duk_hthread *thr = (duk_hthread *) ctx; duk_hobject *h; duk_bool_t is_freeze; DUK_ASSERT_TOP(ctx, 1); is_freeze = (duk_bool_t) duk_get_current_magic(ctx); if (duk_is_buffer(ctx, 0)) { /* Plain buffer: already sealed, but not frozen (and can't be frozen * because index properties can't be made non-writable. */ if (is_freeze) { goto fail_cannot_freeze; } return 1; } else if (duk_is_lightfunc(ctx, 0)) { /* Lightfunc: already sealed and frozen, success. */ return 1; } #if 0 /* Seal/freeze are quite rare in practice so it'd be nice to get the * correct behavior simply via automatic promotion (at the cost of some * memory churn). However, the promoted objects don't behave the same, * e.g. promoted lightfuncs are extensible. */ h = duk_require_hobject_promote_mask(ctx, 0, DUK_TYPE_MASK_LIGHTFUNC | DUK_TYPE_MASK_BUFFER); #endif h = duk_get_hobject(ctx, 0); if (h == NULL) { /* ES2015 Sections 19.1.2.5, 19.1.2.17 */ return 1; } if (is_freeze && DUK_HOBJECT_IS_BUFOBJ(h)) { /* Buffer objects cannot be frozen because there's no internal * support for making virtual array indices non-writable. */ DUK_DD(DUK_DDPRINT("cannot freeze a buffer object")); goto fail_cannot_freeze; } duk_hobject_object_seal_freeze_helper(thr, h, is_freeze); /* Sealed and frozen objects cannot gain any more properties, * so this is a good time to compact them. */ duk_hobject_compact_props(thr, h); return 1; fail_cannot_freeze: DUK_DCERROR_TYPE_INVALID_ARGS(thr); /* XXX: proper error message */ }
static duk_ret_t test_func(duk_context *ctx, void *udata) { (void) udata; if (ctx) { printf("dummy - return here\n"); fflush(stdout); return 0; } /* Up-to-date for Duktape 1.3.0, alphabetical order: * $ cd website/api; ls *.yaml */ (void) duk_alloc_raw(ctx, 0); (void) duk_alloc(ctx, 0); (void) duk_base64_decode(ctx, 0); (void) duk_base64_encode(ctx, 0); (void) duk_buffer_to_string(ctx, 0); (void) duk_call_method(ctx, 0); (void) duk_call_prop(ctx, 0, 0); (void) duk_call(ctx, 0); (void) duk_char_code_at(ctx, 0, 0); (void) duk_check_stack_top(ctx, 0); (void) duk_check_stack(ctx, 0); (void) duk_check_type_mask(ctx, 0, 0); (void) duk_check_type(ctx, 0, 0); (void) duk_compact(ctx, 0); (void) duk_compile_lstring_filename(ctx, 0, "dummy", 0); (void) duk_compile_lstring(ctx, 0, "dummy", 0); (void) duk_compile_string_filename(ctx, 0, "dummy"); (void) duk_compile_string(ctx, 0, "dummy"); (void) duk_compile(ctx, 0); (void) duk_concat(ctx, 0); (void) duk_config_buffer(ctx, 0, NULL, 0); (void) duk_copy(ctx, 0, 0); (void) duk_create_heap_default(); (void) duk_create_heap(NULL, NULL, NULL, NULL, NULL); (void) duk_debugger_attach(ctx, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL); (void) duk_debugger_cooperate(ctx); (void) duk_debugger_detach(ctx); (void) duk_debugger_notify(ctx, 0); (void) duk_debugger_pause(ctx); (void) duk_decode_string(ctx, 0, NULL, NULL); (void) duk_def_prop(ctx, 0, 0); (void) duk_del_prop_index(ctx, 0, 0); (void) duk_del_prop_string(ctx, 0, "dummy"); (void) duk_del_prop(ctx, 0); (void) duk_destroy_heap(ctx); (void) duk_dump_function(ctx); (void) duk_dup_top(ctx); (void) duk_dup(ctx, 0); (void) duk_enum(ctx, 0, 0); (void) duk_equals(ctx, 0, 0); duk_error_va(ctx, 0, NULL, NULL); duk_error(ctx, 0, "dummy"); /* (void) cast won't work without variadic macros */ (void) duk_eval_lstring_noresult(ctx, "dummy", 0); (void) duk_eval_lstring(ctx, "dummy", 0); (void) duk_eval_noresult(ctx); (void) duk_eval_string_noresult(ctx, "dummy"); (void) duk_eval_string(ctx, "dummy"); (void) duk_eval(ctx); (void) duk_fatal(ctx, "dummy"); (void) duk_free_raw(ctx, NULL); (void) duk_free(ctx, NULL); (void) duk_gc(ctx, 0); (void) duk_get_boolean(ctx, 0); (void) duk_get_buffer_data(ctx, 0, NULL); (void) duk_get_buffer(ctx, 0, NULL); (void) duk_get_c_function(ctx, 0); (void) duk_get_context(ctx, 0); (void) duk_get_current_magic(ctx); (void) duk_get_error_code(ctx, 0); (void) duk_get_finalizer(ctx, 0); (void) duk_get_global_string(ctx, 0); (void) duk_get_heapptr(ctx, 0); (void) duk_get_int(ctx, 0); (void) duk_get_length(ctx, 0); (void) duk_get_lstring(ctx, 0, NULL); (void) duk_get_magic(ctx, 0); (void) duk_get_memory_functions(ctx, NULL); (void) duk_get_number(ctx, 0); (void) duk_get_pointer(ctx, 0); (void) duk_get_prop_index(ctx, 0, 0); (void) duk_get_prop_string(ctx, 0, "dummy"); (void) duk_get_prop(ctx, 0); (void) duk_get_prototype(ctx, 0); (void) duk_get_string(ctx, 0); (void) duk_get_top_index(ctx); (void) duk_get_top(ctx); (void) duk_get_type_mask(ctx, 0); (void) duk_get_type(ctx, 0); (void) duk_get_uint(ctx, 0); (void) duk_has_prop_index(ctx, 0, 0); (void) duk_has_prop_string(ctx, 0, "dummy"); (void) duk_has_prop(ctx, 0); (void) duk_hex_decode(ctx, 0); (void) duk_hex_encode(ctx, 0); (void) duk_insert(ctx, 0); (void) duk_instanceof(ctx, 0, 0); (void) duk_is_array(ctx, 0); (void) duk_is_boolean(ctx, 0); (void) duk_is_bound_function(ctx, 0); (void) duk_is_buffer(ctx, 0); (void) duk_is_callable(ctx, 0); (void) duk_is_c_function(ctx, 0); (void) duk_is_constructor_call(ctx); (void) duk_is_dynamic_buffer(ctx, 0); (void) duk_is_ecmascript_function(ctx, 0); (void) duk_is_error(ctx, 0); (void) duk_is_eval_error(ctx, 0); (void) duk_is_fixed_buffer(ctx, 0); (void) duk_is_function(ctx, 0); (void) duk_is_lightfunc(ctx, 0); (void) duk_is_nan(ctx, 0); (void) duk_is_null_or_undefined(ctx, 0); (void) duk_is_null(ctx, 0); (void) duk_is_number(ctx, 0); (void) duk_is_object_coercible(ctx, 0); (void) duk_is_object(ctx, 0); (void) duk_is_pointer(ctx, 0); (void) duk_is_primitive(ctx, 0); (void) duk_is_range_error(ctx, 0); (void) duk_is_reference_error(ctx, 0); (void) duk_is_strict_call(ctx); (void) duk_is_string(ctx, 0); (void) duk_is_syntax_error(ctx, 0); (void) duk_is_thread(ctx, 0); (void) duk_is_type_error(ctx, 0); (void) duk_is_undefined(ctx, 0); (void) duk_is_uri_error(ctx, 0); (void) duk_is_valid_index(ctx, 0); (void) duk_join(ctx, 0); (void) duk_json_decode(ctx, 0); (void) duk_json_encode(ctx, 0); (void) duk_load_function(ctx); (void) duk_map_string(ctx, 0, NULL, NULL); (void) duk_new(ctx, 0); (void) duk_next(ctx, 0, 0); (void) duk_normalize_index(ctx, 0); (void) duk_pcall_method(ctx, 0); (void) duk_pcall_prop(ctx, 0, 0); (void) duk_pcall(ctx, 0); (void) duk_pcompile_lstring_filename(ctx, 0, "dummy", 0); (void) duk_pcompile_lstring(ctx, 0, "dummy", 0); (void) duk_pcompile_string_filename(ctx, 0, "dummy"); (void) duk_pcompile_string(ctx, 0, "dummy"); (void) duk_pcompile(ctx, 0); (void) duk_peval_lstring_noresult(ctx, "dummy", 0); (void) duk_peval_lstring(ctx, "dummy", 0); (void) duk_peval_noresult(ctx); (void) duk_peval_string_noresult(ctx, "dummy"); (void) duk_peval_string(ctx, "dummy"); (void) duk_peval(ctx); (void) duk_pnew(ctx, 0); (void) duk_pop_2(ctx); (void) duk_pop_3(ctx); (void) duk_pop_n(ctx, 0); (void) duk_pop(ctx); (void) duk_push_array(ctx); (void) duk_push_boolean(ctx, 0); (void) duk_push_buffer_object(ctx, 0, 0, 0, 0); (void) duk_push_buffer(ctx, 0, 0); (void) duk_push_c_function(ctx, NULL, 0); (void) duk_push_c_lightfunc(ctx, NULL, 0, 0, 0); (void) duk_push_context_dump(ctx); (void) duk_push_current_function(ctx); (void) duk_push_current_thread(ctx); (void) duk_push_dynamic_buffer(ctx, 0); (void) duk_push_error_object_va(ctx, 0, NULL, NULL); (void) duk_push_error_object(ctx, 0, "dummy"); (void) duk_push_external_buffer(ctx); (void) duk_push_false(ctx); (void) duk_push_fixed_buffer(ctx, 0); (void) duk_push_global_object(ctx); (void) duk_push_global_stash(ctx); (void) duk_push_heap_stash(ctx); (void) duk_push_heapptr(ctx, NULL); (void) duk_push_int(ctx, 0); (void) duk_push_lstring(ctx, "dummy", 0); (void) duk_push_nan(ctx); (void) duk_push_null(ctx); (void) duk_push_number(ctx, 0.0); (void) duk_push_object(ctx); (void) duk_push_pointer(ctx, NULL); (void) duk_push_sprintf(ctx, "dummy"); (void) duk_push_string(ctx, "dummy"); (void) duk_push_this(ctx); (void) duk_push_thread_new_globalenv(ctx); (void) duk_push_thread_stash(ctx, NULL); (void) duk_push_thread(ctx); (void) duk_push_true(ctx); (void) duk_push_uint(ctx, 0); (void) duk_push_undefined(ctx); (void) duk_push_vsprintf(ctx, "dummy", NULL); (void) duk_put_function_list(ctx, 0, NULL); (void) duk_put_global_string(ctx, NULL); (void) duk_put_number_list(ctx, 0, NULL); (void) duk_put_prop_index(ctx, 0, 0); (void) duk_put_prop_string(ctx, 0, "dummy"); (void) duk_put_prop(ctx, 0); (void) duk_realloc_raw(ctx, NULL, 0); (void) duk_realloc(ctx, NULL, 0); (void) duk_remove(ctx, 0); (void) duk_replace(ctx, 0); (void) duk_require_boolean(ctx, 0); (void) duk_require_buffer_data(ctx, 0, NULL); (void) duk_require_buffer(ctx, 0, NULL); (void) duk_require_c_function(ctx, 0); (void) duk_require_callable(ctx, 0); (void) duk_require_context(ctx, 0); (void) duk_require_function(ctx, 0); (void) duk_require_heapptr(ctx, 0); (void) duk_require_int(ctx, 0); (void) duk_require_lstring(ctx, 0, NULL); (void) duk_require_normalize_index(ctx, 0); (void) duk_require_null(ctx, 0); (void) duk_require_number(ctx, 0); (void) duk_require_object_coercible(ctx, 0); (void) duk_require_pointer(ctx, 0); (void) duk_require_stack_top(ctx, 0); (void) duk_require_stack(ctx, 0); (void) duk_require_string(ctx, 0); (void) duk_require_top_index(ctx); (void) duk_require_type_mask(ctx, 0, 0); (void) duk_require_uint(ctx, 0); (void) duk_require_undefined(ctx, 0); (void) duk_require_valid_index(ctx, 0); (void) duk_resize_buffer(ctx, 0, 0); (void) duk_safe_call(ctx, NULL, NULL, 0, 0); (void) duk_safe_to_lstring(ctx, 0, NULL); (void) duk_safe_to_string(ctx, 0); (void) duk_set_finalizer(ctx, 0); (void) duk_set_global_object(ctx); (void) duk_set_magic(ctx, 0, 0); (void) duk_set_prototype(ctx, 0); (void) duk_set_top(ctx, 0); (void) duk_steal_buffer(ctx, 0, NULL); (void) duk_strict_equals(ctx, 0, 0); (void) duk_substring(ctx, 0, 0, 0); (void) duk_swap_top(ctx, 0); (void) duk_swap(ctx, 0, 0); (void) duk_throw(ctx); (void) duk_to_boolean(ctx, 0); (void) duk_to_buffer(ctx, 0, NULL); (void) duk_to_defaultvalue(ctx, 0, 0); (void) duk_to_dynamic_buffer(ctx, 0, NULL); (void) duk_to_fixed_buffer(ctx, 0, NULL); (void) duk_to_int32(ctx, 0); (void) duk_to_int(ctx, 0); (void) duk_to_lstring(ctx, 0, NULL); (void) duk_to_null(ctx, 0); (void) duk_to_number(ctx, 0); (void) duk_to_object(ctx, 0); (void) duk_to_pointer(ctx, 0); (void) duk_to_primitive(ctx, 0, 0); (void) duk_to_string(ctx, 0); (void) duk_to_uint16(ctx, 0); (void) duk_to_uint32(ctx, 0); (void) duk_to_uint(ctx, 0); (void) duk_to_undefined(ctx, 0); (void) duk_trim(ctx, 0); (void) duk_xcopy_top(ctx, NULL, 0); (void) duk_xmove_top(ctx, NULL, 0); printf("never here\n"); fflush(stdout); return 0; }
DUK_EXTERNAL void duk_new(duk_context *ctx, duk_idx_t nargs) { /* * There are two [[Construct]] operations in the specification: * * - E5 Section 13.2.2: for Function objects * - E5 Section 15.3.4.5.2: for "bound" Function objects * * The chain of bound functions is resolved in Section 15.3.4.5.2, * with arguments "piling up" until the [[Construct]] internal * method is called on the final, actual Function object. Note * that the "prototype" property is looked up *only* from the * final object, *before* calling the constructor. * * Currently we follow the bound function chain here to get the * "prototype" property value from the final, non-bound function. * However, we let duk_handle_call() handle the argument "piling" * when the constructor is called. The bound function chain is * thus now processed twice. * * When constructing new Array instances, an unnecessary object is * created and discarded now: the standard [[Construct]] creates an * object, and calls the Array constructor. The Array constructor * returns an Array instance, which is used as the result value for * the "new" operation; the object created before the Array constructor * call is discarded. * * This would be easy to fix, e.g. by knowing that the Array constructor * will always create a replacement object and skip creating the fallback * object in that case. * * Note: functions called via "new" need to know they are called as a * constructor. For instance, built-in constructors behave differently * depending on how they are called. */ /* XXX: merge this with duk_js_call.c, as this function implements * core semantics (or perhaps merge the two files altogether). */ duk_hthread *thr = (duk_hthread *) ctx; duk_hobject *proto; duk_hobject *cons; duk_hobject *fallback; duk_idx_t idx_cons; duk_small_uint_t call_flags; DUK_ASSERT_CTX_VALID(ctx); /* [... constructor arg1 ... argN] */ idx_cons = duk_require_normalize_index(ctx, -nargs - 1); DUK_DDD(DUK_DDDPRINT("top=%ld, nargs=%ld, idx_cons=%ld", (long) duk_get_top(ctx), (long) nargs, (long) idx_cons)); /* XXX: code duplication */ /* * Figure out the final, non-bound constructor, to get "prototype" * property. */ duk_dup(ctx, idx_cons); for (;;) { duk_tval *tv; tv = DUK_GET_TVAL_NEGIDX(ctx, -1); DUK_ASSERT(tv != NULL); if (DUK_TVAL_IS_OBJECT(tv)) { cons = DUK_TVAL_GET_OBJECT(tv); DUK_ASSERT(cons != NULL); if (!DUK_HOBJECT_IS_CALLABLE(cons) || !DUK_HOBJECT_HAS_CONSTRUCTABLE(cons)) { /* Checking callability of the immediate target * is important, same for constructability. * Checking it for functions down the bound * function chain is not strictly necessary * because .bind() should normally reject them. * But it's good to check anyway because it's * technically possible to edit the bound function * chain via internal keys. */ goto not_constructable; } if (!DUK_HOBJECT_HAS_BOUNDFUNC(cons)) { break; } } else if (DUK_TVAL_IS_LIGHTFUNC(tv)) { /* Lightfuncs cannot be bound. */ break; } else { /* Anything else is not constructable. */ goto not_constructable; } duk_get_prop_stridx_short(ctx, -1, DUK_STRIDX_INT_TARGET); /* -> [... cons target] */ duk_remove_m2(ctx); /* -> [... target] */ } DUK_ASSERT(duk_is_callable(ctx, -1)); DUK_ASSERT(duk_is_lightfunc(ctx, -1) || (duk_get_hobject(ctx, -1) != NULL && !DUK_HOBJECT_HAS_BOUNDFUNC(duk_get_hobject(ctx, -1)))); /* [... constructor arg1 ... argN final_cons] */ /* * Create "fallback" object to be used as the object instance, * unless the constructor returns a replacement value. * Its internal prototype needs to be set based on "prototype" * property of the constructor. */ duk_push_object(ctx); /* class Object, extensible */ /* [... constructor arg1 ... argN final_cons fallback] */ duk_get_prop_stridx_short(ctx, -2, DUK_STRIDX_PROTOTYPE); proto = duk_get_hobject(ctx, -1); if (!proto) { DUK_DDD(DUK_DDDPRINT("constructor has no 'prototype' property, or value not an object " "-> leave standard Object prototype as fallback prototype")); } else { DUK_DDD(DUK_DDDPRINT("constructor has 'prototype' property with object value " "-> set fallback prototype to that value: %!iO", (duk_heaphdr *) proto)); fallback = duk_get_hobject(ctx, -2); DUK_ASSERT(fallback != NULL); DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr, fallback, proto); } duk_pop(ctx); /* [... constructor arg1 ... argN final_cons fallback] */ /* * Manipulate callstack for the call. */ duk_dup_top(ctx); duk_insert(ctx, idx_cons + 1); /* use fallback as 'this' value */ duk_insert(ctx, idx_cons); /* also stash it before constructor, * in case we need it (as the fallback value) */ duk_pop(ctx); /* pop final_cons */ /* [... fallback constructor fallback(this) arg1 ... argN]; * Note: idx_cons points to first 'fallback', not 'constructor'. */ DUK_DDD(DUK_DDDPRINT("before call, idx_cons+1 (constructor) -> %!T, idx_cons+2 (fallback/this) -> %!T, " "nargs=%ld, top=%ld", (duk_tval *) duk_get_tval(ctx, idx_cons + 1), (duk_tval *) duk_get_tval(ctx, idx_cons + 2), (long) nargs, (long) duk_get_top(ctx))); /* * Call the constructor function (called in "constructor mode"). */ call_flags = DUK_CALL_FLAG_CONSTRUCTOR_CALL; /* not protected, respect reclimit, is a constructor call */ duk_handle_call_unprotected(thr, /* thread */ nargs, /* num_stack_args */ call_flags); /* call_flags */ /* [... fallback retval] */ DUK_DDD(DUK_DDDPRINT("constructor call finished, fallback=%!iT, retval=%!iT", (duk_tval *) duk_get_tval(ctx, -2), (duk_tval *) duk_get_tval(ctx, -1))); /* * Determine whether to use the constructor return value as the created * object instance or not. */ if (duk_check_type_mask(ctx, -1, DUK_TYPE_MASK_OBJECT | DUK_TYPE_MASK_BUFFER | DUK_TYPE_MASK_LIGHTFUNC)) { duk_remove_m2(ctx); } else { duk_pop(ctx); } /* * Augment created errors upon creation (not when they are thrown or * rethrown). __FILE__ and __LINE__ are not desirable here; the call * stack reflects the caller which is correct. */ #if defined(DUK_USE_AUGMENT_ERROR_CREATE) duk_hthread_sync_currpc(thr); duk_err_augment_error_create(thr, thr, NULL, 0, 1 /*noblame_fileline*/); #endif /* [... retval] */ return; not_constructable: #if defined(DUK_USE_VERBOSE_ERRORS) #if defined(DUK_USE_PARANOID_ERRORS) DUK_ERROR_FMT1(thr, DUK_ERR_TYPE_ERROR, "%s not constructable", duk_get_type_name(ctx, -1)); #else DUK_ERROR_FMT1(thr, DUK_ERR_TYPE_ERROR, "%s not constructable", duk_push_string_readable(ctx, -1)); #endif #else DUK_ERROR_TYPE(thr, "not constructable"); #endif }
/* Shared helper to implement ES6 Object.setPrototypeOf and * Object.prototype.__proto__ setter. * * https://people.mozilla.org/~jorendorff/es6-draft.html#sec-get-object.prototype.__proto__ * https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.setprototypeof */ DUK_INTERNAL duk_ret_t duk_bi_object_setprototype_shared(duk_context *ctx) { duk_hthread *thr = (duk_hthread *) ctx; duk_hobject *h_obj; duk_hobject *h_new_proto; duk_hobject *h_curr; duk_ret_t ret_success = 1; /* retval for success path */ /* Preliminaries for __proto__ and setPrototypeOf (E6 19.1.2.18 steps 1-4); * magic: 0=setter call, 1=Object.setPrototypeOf */ if (duk_get_current_magic(ctx) == 0) { duk_push_this_check_object_coercible(ctx); duk_insert(ctx, 0); if (!duk_check_type_mask(ctx, 1, DUK_TYPE_MASK_NULL | DUK_TYPE_MASK_OBJECT)) { return 0; } /* __proto__ setter returns 'undefined' on success unlike the * setPrototypeOf() call which returns the target object. */ ret_success = 0; } else { duk_require_object_coercible(ctx, 0); duk_require_type_mask(ctx, 1, DUK_TYPE_MASK_NULL | DUK_TYPE_MASK_OBJECT); } h_new_proto = duk_get_hobject(ctx, 1); /* h_new_proto may be NULL */ if (duk_is_lightfunc(ctx, 0)) { if (h_new_proto == thr->builtins[DUK_BIDX_FUNCTION_PROTOTYPE]) { goto skip; } goto fail_nonextensible; } h_obj = duk_get_hobject(ctx, 0); if (!h_obj) { goto skip; } DUK_ASSERT(h_obj != NULL); /* [[SetPrototypeOf]] standard behavior, E6 9.1.2 */ /* NOTE: steps 7-8 seem to be a cut-paste bug in the E6 draft */ /* TODO: implement Proxy object support here */ if (h_new_proto == DUK_HOBJECT_GET_PROTOTYPE(h_obj)) { goto skip; } if (!DUK_HOBJECT_HAS_EXTENSIBLE(h_obj)) { goto fail_nonextensible; } for (h_curr = h_new_proto; h_curr != NULL; h_curr = DUK_HOBJECT_GET_PROTOTYPE(h_curr)) { /* Loop prevention */ if (h_curr == h_obj) { goto fail_loop; } } DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr, h_obj, h_new_proto); /* fall thru */ skip: duk_set_top(ctx, 1); return ret_success; fail_nonextensible: fail_loop: return DUK_RET_TYPE_ERROR; }
//duk_bool_t duk_is_lightfunc(duk_context *ctx, duk_idx_t index); duk_bool_t aperl_duk_is_lightfunc(duk_context *ctx, duk_idx_t index) { duk_bool_t ret = duk_is_lightfunc(ctx, index); return ret; }