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// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "src/inspector/v8-value-utils.h"
namespace v8_inspector {
namespace {
protocol::Response toProtocolValue(v8::Local<v8::Context> context,
v8::Local<v8::Value> value, int maxDepth,
std::unique_ptr<protocol::Value>* result) {
using protocol::Response;
if (value.IsEmpty()) {
UNREACHABLE();
}
if (!maxDepth) return Response::Error("Object reference chain is too long");
maxDepth--;
if (value->IsNull() || value->IsUndefined()) {
*result = protocol::Value::null();
return Response::OK();
}
if (value->IsBoolean()) {
*result =
protocol::FundamentalValue::create(value.As<v8::Boolean>()->Value());
return Response::OK();
}
if (value->IsNumber()) {
double doubleValue = value.As<v8::Number>()->Value();
int intValue = static_cast<int>(doubleValue);
if (intValue == doubleValue) {
*result = protocol::FundamentalValue::create(intValue);
return Response::OK();
}
*result = protocol::FundamentalValue::create(doubleValue);
return Response::OK();
}
if (value->IsString()) {
*result = protocol::StringValue::create(
toProtocolString(context->GetIsolate(), value.As<v8::String>()));
return Response::OK();
}
if (value->IsArray()) {
v8::Local<v8::Array> array = value.As<v8::Array>();
std::unique_ptr<protocol::ListValue> inspectorArray =
protocol::ListValue::create();
uint32_t length = array->Length();
for (uint32_t i = 0; i < length; i++) {
v8::Local<v8::Value> value;
if (!array->Get(context, i).ToLocal(&value))
return Response::InternalError();
std::unique_ptr<protocol::Value> element;
Response response = toProtocolValue(context, value, maxDepth, &element);
if (!response.isSuccess()) return response;
inspectorArray->pushValue(std::move(element));
}
*result = std::move(inspectorArray);
return Response::OK();
}
if (value->IsObject()) {
std::unique_ptr<protocol::DictionaryValue> jsonObject =
protocol::DictionaryValue::create();
v8::Local<v8::Object> object = v8::Local<v8::Object>::Cast(value);
v8::Local<v8::Array> propertyNames;
if (!object->GetPropertyNames(context).ToLocal(&propertyNames))
return Response::InternalError();
uint32_t length = propertyNames->Length();
for (uint32_t i = 0; i < length; i++) {
v8::Local<v8::Value> name;
if (!propertyNames->Get(context, i).ToLocal(&name))
return Response::InternalError();
// FIXME(yurys): v8::Object should support GetOwnPropertyNames
if (name->IsString()) {
v8::Maybe<bool> hasRealNamedProperty = object->HasRealNamedProperty(
context, v8::Local<v8::String>::Cast(name));
if (hasRealNamedProperty.IsNothing() ||
!hasRealNamedProperty.FromJust())
continue;
}
v8::Local<v8::String> propertyName;
if (!name->ToString(context).ToLocal(&propertyName)) continue;
v8::Local<v8::Value> property;
if (!object->Get(context, name).ToLocal(&property))
return Response::InternalError();
if (property->IsUndefined()) continue;
std::unique_ptr<protocol::Value> propertyValue;
Response response =
toProtocolValue(context, property, maxDepth, &propertyValue);
if (!response.isSuccess()) return response;
jsonObject->setValue(
toProtocolString(context->GetIsolate(), propertyName),
std::move(propertyValue));
}
*result = std::move(jsonObject);
return Response::OK();
}
return Response::Error("Object couldn't be returned by value");
}
} // namespace
v8::Maybe<bool> createDataProperty(v8::Local<v8::Context> context,
v8::Local<v8::Object> object,
v8::Local<v8::Name> key,
v8::Local<v8::Value> value) {
v8::TryCatch tryCatch(context->GetIsolate());
v8::Isolate::DisallowJavascriptExecutionScope throwJs(
context->GetIsolate(),
v8::Isolate::DisallowJavascriptExecutionScope::THROW_ON_FAILURE);
return object->CreateDataProperty(context, key, value);
}
v8::Maybe<bool> createDataProperty(v8::Local<v8::Context> context,
v8::Local<v8::Array> array, int index,
v8::Local<v8::Value> value) {
v8::TryCatch tryCatch(context->GetIsolate());
v8::Isolate::DisallowJavascriptExecutionScope throwJs(
context->GetIsolate(),
v8::Isolate::DisallowJavascriptExecutionScope::THROW_ON_FAILURE);
return array->CreateDataProperty(context, index, value);
}
protocol::Response toProtocolValue(v8::Local<v8::Context> context,
v8::Local<v8::Value> value,
std::unique_ptr<protocol::Value>* result) {
return toProtocolValue(context, value, 1000, result);
}
} // namespace v8_inspector
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