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| 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/inspector/V8ValueCopier.h" | |
| 6 | |
| 7 namespace v8_inspector { | |
| 8 | |
| 9 namespace { | |
| 10 | |
| 11 static int kMaxDepth = 20; | |
| 12 static int kMaxCalls = 1000; | |
| 13 | |
| 14 class V8ValueCopier { | |
| 15 public: | |
| 16 v8::MaybeLocal<v8::Value> copy(v8::Local<v8::Value> value, int depth) { | |
| 17 if (++m_calls > kMaxCalls || depth > kMaxDepth) | |
| 18 return v8::MaybeLocal<v8::Value>(); | |
| 19 | |
| 20 if (value.IsEmpty()) return v8::MaybeLocal<v8::Value>(); | |
| 21 if (value->IsNull() || value->IsUndefined() || value->IsBoolean() || | |
| 22 value->IsString() || value->IsNumber()) | |
| 23 return value; | |
| 24 if (!value->IsObject()) return v8::MaybeLocal<v8::Value>(); | |
| 25 v8::Local<v8::Object> object = value.As<v8::Object>(); | |
| 26 if (object->CreationContext() != m_from) return value; | |
| 27 | |
| 28 if (object->IsArray()) { | |
| 29 v8::Local<v8::Array> array = object.As<v8::Array>(); | |
| 30 v8::Local<v8::Array> result = v8::Array::New(m_isolate, array->Length()); | |
| 31 if (!result->SetPrototype(m_to, v8::Null(m_isolate)).FromMaybe(false)) | |
| 32 return v8::MaybeLocal<v8::Value>(); | |
| 33 for (size_t i = 0; i < array->Length(); ++i) { | |
| 34 v8::Local<v8::Value> item; | |
| 35 if (!array->Get(m_from, i).ToLocal(&item)) | |
| 36 return v8::MaybeLocal<v8::Value>(); | |
| 37 v8::Local<v8::Value> copied; | |
| 38 if (!copy(item, depth + 1).ToLocal(&copied)) | |
| 39 return v8::MaybeLocal<v8::Value>(); | |
| 40 if (!createDataProperty(m_to, result, i, copied).FromMaybe(false)) | |
| 41 return v8::MaybeLocal<v8::Value>(); | |
| 42 } | |
| 43 return result; | |
| 44 } | |
| 45 | |
| 46 v8::Local<v8::Object> result = v8::Object::New(m_isolate); | |
| 47 if (!result->SetPrototype(m_to, v8::Null(m_isolate)).FromMaybe(false)) | |
| 48 return v8::MaybeLocal<v8::Value>(); | |
| 49 v8::Local<v8::Array> properties; | |
| 50 if (!object->GetOwnPropertyNames(m_from).ToLocal(&properties)) | |
| 51 return v8::MaybeLocal<v8::Value>(); | |
| 52 for (size_t i = 0; i < properties->Length(); ++i) { | |
| 53 v8::Local<v8::Value> name; | |
| 54 if (!properties->Get(m_from, i).ToLocal(&name) || !name->IsString()) | |
| 55 return v8::MaybeLocal<v8::Value>(); | |
| 56 v8::Local<v8::Value> property; | |
| 57 if (!object->Get(m_from, name).ToLocal(&property)) | |
| 58 return v8::MaybeLocal<v8::Value>(); | |
| 59 v8::Local<v8::Value> copied; | |
| 60 if (!copy(property, depth + 1).ToLocal(&copied)) | |
| 61 return v8::MaybeLocal<v8::Value>(); | |
| 62 if (!createDataProperty(m_to, result, v8::Local<v8::String>::Cast(name), | |
| 63 copied) | |
| 64 .FromMaybe(false)) | |
| 65 return v8::MaybeLocal<v8::Value>(); | |
| 66 } | |
| 67 return result; | |
| 68 } | |
| 69 | |
| 70 v8::Isolate* m_isolate; | |
| 71 v8::Local<v8::Context> m_from; | |
| 72 v8::Local<v8::Context> m_to; | |
| 73 int m_calls; | |
| 74 }; | |
| 75 | |
| 76 } // namespace | |
| 77 | |
| 78 v8::MaybeLocal<v8::Value> copyValueFromDebuggerContext( | |
| 79 v8::Isolate* isolate, v8::Local<v8::Context> debuggerContext, | |
| 80 v8::Local<v8::Context> toContext, v8::Local<v8::Value> value) { | |
| 81 V8ValueCopier copier; | |
| 82 copier.m_isolate = isolate; | |
| 83 copier.m_from = debuggerContext; | |
| 84 copier.m_to = toContext; | |
| 85 copier.m_calls = 0; | |
| 86 return copier.copy(value, 0); | |
| 87 } | |
| 88 | |
| 89 v8::Maybe<bool> createDataProperty(v8::Local<v8::Context> context, | |
| 90 v8::Local<v8::Object> object, | |
| 91 v8::Local<v8::Name> key, | |
| 92 v8::Local<v8::Value> value) { | |
| 93 v8::TryCatch tryCatch(context->GetIsolate()); | |
| 94 v8::Isolate::DisallowJavascriptExecutionScope throwJs( | |
| 95 context->GetIsolate(), | |
| 96 v8::Isolate::DisallowJavascriptExecutionScope::THROW_ON_FAILURE); | |
| 97 return object->CreateDataProperty(context, key, value); | |
| 98 } | |
| 99 | |
| 100 v8::Maybe<bool> createDataProperty(v8::Local<v8::Context> context, | |
| 101 v8::Local<v8::Array> array, int index, | |
| 102 v8::Local<v8::Value> value) { | |
| 103 v8::TryCatch tryCatch(context->GetIsolate()); | |
| 104 v8::Isolate::DisallowJavascriptExecutionScope throwJs( | |
| 105 context->GetIsolate(), | |
| 106 v8::Isolate::DisallowJavascriptExecutionScope::THROW_ON_FAILURE); | |
| 107 return array->CreateDataProperty(context, index, value); | |
| 108 } | |
| 109 | |
| 110 } // namespace v8_inspector | |
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Chromium Code Reviews
Issue 2338413003:
[inspector] change implementation file extension from cpp to cc (Closed)
