1 // Copyright 2016 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "src/builtins/accessors.h"
6 #include "src/builtins/builtins-utils-inl.h"
7 #include "src/builtins/builtins.h"
8 #include "src/execution/isolate-inl.h"
9 #include "src/execution/messages.h"
10 #include "src/logging/counters.h"
11 #include "src/objects/api-callbacks.h"
12 #include "src/objects/objects-inl.h"
13 #include "src/objects/property-descriptor.h"
14
15 namespace v8 {
16 namespace internal {
17
18 // ES6 section 19.5.1.1 Error ( message )
BUILTIN(ErrorConstructor)19 BUILTIN(ErrorConstructor) {
20 HandleScope scope(isolate);
21 Handle<Object> options = FLAG_harmony_error_cause
22 ? args.atOrUndefined(isolate, 2)
23 : isolate->factory()->undefined_value();
24 RETURN_RESULT_OR_FAILURE(
25 isolate, ErrorUtils::Construct(isolate, args.target(), args.new_target(),
26 args.atOrUndefined(isolate, 1), options));
27 }
28
29 // static
BUILTIN(ErrorCaptureStackTrace)30 BUILTIN(ErrorCaptureStackTrace) {
31 HandleScope scope(isolate);
32 Handle<Object> object_obj = args.atOrUndefined(isolate, 1);
33
34 isolate->CountUsage(v8::Isolate::kErrorCaptureStackTrace);
35
36 if (!object_obj->IsJSObject()) {
37 THROW_NEW_ERROR_RETURN_FAILURE(
38 isolate, NewTypeError(MessageTemplate::kInvalidArgument, object_obj));
39 }
40
41 Handle<JSObject> object = Handle<JSObject>::cast(object_obj);
42 Handle<Object> caller = args.atOrUndefined(isolate, 2);
43 FrameSkipMode mode = caller->IsJSFunction() ? SKIP_UNTIL_SEEN : SKIP_FIRST;
44
45 // Collect the stack trace.
46
47 RETURN_FAILURE_ON_EXCEPTION(
48 isolate, isolate->CaptureAndSetErrorStack(object, mode, caller));
49
50 // Add the stack accessors.
51
52 Handle<AccessorInfo> error_stack = isolate->factory()->error_stack_accessor();
53 Handle<Name> name(Name::cast(error_stack->name()), isolate);
54
55 // Explicitly check for frozen objects. Other access checks are performed by
56 // the LookupIterator in SetAccessor below.
57 if (!JSObject::IsExtensible(object)) {
58 return isolate->Throw(*isolate->factory()->NewTypeError(
59 MessageTemplate::kDefineDisallowed, name));
60 }
61
62 RETURN_FAILURE_ON_EXCEPTION(
63 isolate, JSObject::SetAccessor(object, name, error_stack, DONT_ENUM));
64 return ReadOnlyRoots(isolate).undefined_value();
65 }
66
67 // ES6 section 19.5.3.4 Error.prototype.toString ( )
BUILTIN(ErrorPrototypeToString)68 BUILTIN(ErrorPrototypeToString) {
69 HandleScope scope(isolate);
70 RETURN_RESULT_OR_FAILURE(isolate,
71 ErrorUtils::ToString(isolate, args.receiver()));
72 }
73
74 } // namespace internal
75 } // namespace v8
76