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// Copyright 2017 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
#include "fxjs/cfx_v8.h"
#include "core/fxcrt/fx_memory.h"
#include "third_party/base/allocator/partition_allocator/partition_alloc.h"
CFX_V8::CFX_V8(v8::Isolate* isolate) : m_isolate(isolate) {}
CFX_V8::~CFX_V8() = default;
v8::Local<v8::Value> CFX_V8::GetObjectProperty(
v8::Local<v8::Object> pObj,
const WideString& wsPropertyName) {
if (pObj.IsEmpty())
return v8::Local<v8::Value>();
v8::Local<v8::Value> val;
if (!pObj->Get(m_isolate->GetCurrentContext(),
NewString(wsPropertyName.AsStringView()))
.ToLocal(&val))
return v8::Local<v8::Value>();
return val;
}
std::vector<WideString> CFX_V8::GetObjectPropertyNames(
v8::Local<v8::Object> pObj) {
if (pObj.IsEmpty())
return std::vector<WideString>();
v8::Local<v8::Array> val;
v8::Local<v8::Context> context = m_isolate->GetCurrentContext();
if (!pObj->GetPropertyNames(context).ToLocal(&val))
return std::vector<WideString>();
std::vector<WideString> result;
for (uint32_t i = 0; i < val->Length(); ++i) {
result.push_back(ToWideString(val->Get(context, i).ToLocalChecked()));
}
return result;
}
void CFX_V8::PutObjectProperty(v8::Local<v8::Object> pObj,
const WideString& wsPropertyName,
v8::Local<v8::Value> pPut) {
if (pObj.IsEmpty())
return;
pObj->Set(m_isolate->GetCurrentContext(),
NewString(wsPropertyName.AsStringView()), pPut)
.FromJust();
}
v8::Local<v8::Array> CFX_V8::NewArray() {
return v8::Array::New(m_isolate);
}
v8::Local<v8::Object> CFX_V8::NewObject() {
return v8::Object::New(m_isolate);
}
unsigned CFX_V8::PutArrayElement(v8::Local<v8::Array> pArray,
unsigned index,
v8::Local<v8::Value> pValue) {
if (pArray.IsEmpty())
return 0;
if (pArray->Set(m_isolate->GetCurrentContext(), index, pValue).IsNothing())
return 0;
return 1;
}
v8::Local<v8::Value> CFX_V8::GetArrayElement(v8::Local<v8::Array> pArray,
unsigned index) {
if (pArray.IsEmpty())
return v8::Local<v8::Value>();
v8::Local<v8::Value> val;
if (!pArray->Get(m_isolate->GetCurrentContext(), index).ToLocal(&val))
return v8::Local<v8::Value>();
return val;
}
unsigned CFX_V8::GetArrayLength(v8::Local<v8::Array> pArray) {
if (pArray.IsEmpty())
return 0;
return pArray->Length();
}
v8::Local<v8::Number> CFX_V8::NewNumber(int number) {
return v8::Int32::New(m_isolate, number);
}
v8::Local<v8::Number> CFX_V8::NewNumber(double number) {
return v8::Number::New(m_isolate, number);
}
v8::Local<v8::Number> CFX_V8::NewNumber(float number) {
return v8::Number::New(m_isolate, (float)number);
}
v8::Local<v8::Boolean> CFX_V8::NewBoolean(bool b) {
return v8::Boolean::New(m_isolate, b);
}
v8::Local<v8::String> CFX_V8::NewString(const ByteStringView& str) {
v8::Isolate* pIsolate = m_isolate ? m_isolate : v8::Isolate::GetCurrent();
return v8::String::NewFromUtf8(pIsolate, str.unterminated_c_str(),
v8::NewStringType::kNormal, str.GetLength())
.ToLocalChecked();
}
v8::Local<v8::String> CFX_V8::NewString(const WideStringView& str) {
// Conversion from pdfium's wchar_t wide-strings to v8's uint16_t
// wide-strings isn't handled by v8, so use UTF8 as a common
// intermediate format.
return NewString(FX_UTF8Encode(str).AsStringView());
}
v8::Local<v8::Value> CFX_V8::NewNull() {
return v8::Null(m_isolate);
}
v8::Local<v8::Value> CFX_V8::NewUndefined() {
return v8::Undefined(m_isolate);
}
v8::Local<v8::Date> CFX_V8::NewDate(double d) {
return v8::Date::New(m_isolate->GetCurrentContext(), d)
.ToLocalChecked()
.As<v8::Date>();
}
int CFX_V8::ToInt32(v8::Local<v8::Value> pValue) {
if (pValue.IsEmpty())
return 0;
v8::Local<v8::Context> context = m_isolate->GetCurrentContext();
v8::MaybeLocal<v8::Int32> maybe_int32 = pValue->ToInt32(context);
if (maybe_int32.IsEmpty())
return 0;
return maybe_int32.ToLocalChecked()->Value();
}
bool CFX_V8::ToBoolean(v8::Local<v8::Value> pValue) {
if (pValue.IsEmpty())
return false;
v8::Local<v8::Context> context = m_isolate->GetCurrentContext();
v8::MaybeLocal<v8::Boolean> maybe_boolean = pValue->ToBoolean(context);
if (maybe_boolean.IsEmpty())
return false;
return maybe_boolean.ToLocalChecked()->Value();
}
double CFX_V8::ToDouble(v8::Local<v8::Value> pValue) {
if (pValue.IsEmpty())
return 0.0;
v8::Local<v8::Context> context = m_isolate->GetCurrentContext();
v8::MaybeLocal<v8::Number> maybe_number = pValue->ToNumber(context);
if (maybe_number.IsEmpty())
return 0.0;
return maybe_number.ToLocalChecked()->Value();
}
WideString CFX_V8::ToWideString(v8::Local<v8::Value> pValue) {
if (pValue.IsEmpty())
return WideString();
v8::Local<v8::Context> context = m_isolate->GetCurrentContext();
v8::MaybeLocal<v8::String> maybe_string = pValue->ToString(context);
if (maybe_string.IsEmpty())
return WideString();
v8::String::Utf8Value s(m_isolate, maybe_string.ToLocalChecked());
return WideString::FromUTF8(ByteStringView(*s, s.length()));
}
ByteString CFX_V8::ToByteString(v8::Local<v8::Value> pValue) {
if (pValue.IsEmpty())
return ByteString();
v8::Local<v8::Context> context = m_isolate->GetCurrentContext();
v8::MaybeLocal<v8::String> maybe_string = pValue->ToString(context);
if (maybe_string.IsEmpty())
return ByteString();
v8::String::Utf8Value s(m_isolate, maybe_string.ToLocalChecked());
return ByteString(*s);
}
v8::Local<v8::Object> CFX_V8::ToObject(v8::Local<v8::Value> pValue) {
if (pValue.IsEmpty() || !pValue->IsObject())
return v8::Local<v8::Object>();
v8::Local<v8::Context> context = m_isolate->GetCurrentContext();
return pValue->ToObject(context).ToLocalChecked();
}
v8::Local<v8::Array> CFX_V8::ToArray(v8::Local<v8::Value> pValue) {
if (pValue.IsEmpty() || !pValue->IsArray())
return v8::Local<v8::Array>();
v8::Local<v8::Context> context = m_isolate->GetCurrentContext();
return v8::Local<v8::Array>::Cast(pValue->ToObject(context).ToLocalChecked());
}
void* CFX_V8ArrayBufferAllocator::Allocate(size_t length) {
if (length > kMaxAllowedBytes)
return nullptr;
void* p = AllocateUninitialized(length);
if (p)
memset(p, 0, length);
return p;
}
void* CFX_V8ArrayBufferAllocator::AllocateUninitialized(size_t length) {
if (length > kMaxAllowedBytes)
return nullptr;
return pdfium::base::PartitionAllocGeneric(
gArrayBufferPartitionAllocator.root(), length, "CFX_V8ArrayBuffer");
}
void CFX_V8ArrayBufferAllocator::Free(void* data, size_t length) {
pdfium::base::PartitionFreeGeneric(gArrayBufferPartitionAllocator.root(),
data);
}
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