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
15namespace v8 {
16namespace internal {
17
18// ES6 section 19.5.1.1 Error ( message )
19BUILTIN(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
30BUILTIN(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 ( )
68BUILTIN(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