// Copyright 2017 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#include "fxjs/cjs_v8.h"
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#ifdef PDF_ENABLE_XFA
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#include "fxjs/cfxjse_context.h"
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#include "xfa/fxfa/parser/cxfa_object.h"
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#endif // PDF_ENABLE_XFA
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CJS_V8::CJS_V8(v8::Isolate* isolate) : m_isolate(isolate) {}
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CJS_V8::~CJS_V8() {
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m_V8PersistentContext.Reset();
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}
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v8::Local<v8::Value> CJS_V8::GetObjectProperty(
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v8::Local<v8::Object> pObj,
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const WideString& wsPropertyName) {
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if (pObj.IsEmpty())
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return v8::Local<v8::Value>();
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v8::Local<v8::Value> val;
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if (!pObj->Get(m_isolate->GetCurrentContext(),
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NewString(wsPropertyName.AsStringView()))
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.ToLocal(&val))
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return v8::Local<v8::Value>();
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return val;
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}
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std::vector<WideString> CJS_V8::GetObjectPropertyNames(
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v8::Local<v8::Object> pObj) {
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if (pObj.IsEmpty())
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return std::vector<WideString>();
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v8::Local<v8::Array> val;
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v8::Local<v8::Context> context = m_isolate->GetCurrentContext();
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if (!pObj->GetPropertyNames(context).ToLocal(&val))
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return std::vector<WideString>();
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std::vector<WideString> result;
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for (uint32_t i = 0; i < val->Length(); ++i) {
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result.push_back(ToWideString(val->Get(context, i).ToLocalChecked()));
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}
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return result;
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}
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void CJS_V8::PutObjectProperty(v8::Local<v8::Object> pObj,
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const WideString& wsPropertyName,
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v8::Local<v8::Value> pPut) {
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if (pObj.IsEmpty())
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return;
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pObj->Set(m_isolate->GetCurrentContext(),
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NewString(wsPropertyName.AsStringView()), pPut)
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.FromJust();
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}
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v8::Local<v8::Array> CJS_V8::NewArray() {
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return v8::Array::New(m_isolate);
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}
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unsigned CJS_V8::PutArrayElement(v8::Local<v8::Array> pArray,
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unsigned index,
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v8::Local<v8::Value> pValue) {
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if (pArray.IsEmpty())
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return 0;
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if (pArray->Set(m_isolate->GetCurrentContext(), index, pValue).IsNothing())
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return 0;
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return 1;
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}
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v8::Local<v8::Value> CJS_V8::GetArrayElement(v8::Local<v8::Array> pArray,
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unsigned index) {
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if (pArray.IsEmpty())
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return v8::Local<v8::Value>();
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v8::Local<v8::Value> val;
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if (!pArray->Get(m_isolate->GetCurrentContext(), index).ToLocal(&val))
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return v8::Local<v8::Value>();
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return val;
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}
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unsigned CJS_V8::GetArrayLength(v8::Local<v8::Array> pArray) {
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if (pArray.IsEmpty())
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return 0;
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return pArray->Length();
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}
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v8::Local<v8::Context> CJS_V8::NewLocalContext() {
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return v8::Local<v8::Context>::New(m_isolate, m_V8PersistentContext);
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}
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v8::Local<v8::Context> CJS_V8::GetPersistentContext() {
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return m_V8PersistentContext.Get(m_isolate);
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}
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v8::Local<v8::Number> CJS_V8::NewNumber(int number) {
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return v8::Int32::New(m_isolate, number);
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}
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v8::Local<v8::Number> CJS_V8::NewNumber(double number) {
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return v8::Number::New(m_isolate, number);
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}
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v8::Local<v8::Number> CJS_V8::NewNumber(float number) {
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return v8::Number::New(m_isolate, (float)number);
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}
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v8::Local<v8::Boolean> CJS_V8::NewBoolean(bool b) {
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return v8::Boolean::New(m_isolate, b);
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}
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v8::Local<v8::String> CJS_V8::NewString(const ByteStringView& str) {
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v8::Isolate* pIsolate = m_isolate ? m_isolate : v8::Isolate::GetCurrent();
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return v8::String::NewFromUtf8(pIsolate, str.unterminated_c_str(),
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v8::NewStringType::kNormal, str.GetLength())
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.ToLocalChecked();
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}
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v8::Local<v8::String> CJS_V8::NewString(const WideStringView& str) {
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// Conversion from pdfium's wchar_t wide-strings to v8's uint16_t
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// wide-strings isn't handled by v8, so use UTF8 as a common
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// intermediate format.
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return NewString(FX_UTF8Encode(str).AsStringView());
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}
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v8::Local<v8::Value> CJS_V8::NewNull() {
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return v8::Null(m_isolate);
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}
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v8::Local<v8::Value> CJS_V8::NewUndefined() {
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return v8::Undefined(m_isolate);
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}
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v8::Local<v8::Date> CJS_V8::NewDate(double d) {
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return v8::Date::New(m_isolate->GetCurrentContext(), d)
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.ToLocalChecked()
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.As<v8::Date>();
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}
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int CJS_V8::ToInt32(v8::Local<v8::Value> pValue) {
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if (pValue.IsEmpty())
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return 0;
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v8::Local<v8::Context> context = m_isolate->GetCurrentContext();
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v8::MaybeLocal<v8::Int32> maybe_int32 = pValue->ToInt32(context);
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if (maybe_int32.IsEmpty())
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return 0;
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return maybe_int32.ToLocalChecked()->Value();
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}
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bool CJS_V8::ToBoolean(v8::Local<v8::Value> pValue) {
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if (pValue.IsEmpty())
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return false;
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v8::Local<v8::Context> context = m_isolate->GetCurrentContext();
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v8::MaybeLocal<v8::Boolean> maybe_boolean = pValue->ToBoolean(context);
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if (maybe_boolean.IsEmpty())
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return false;
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return maybe_boolean.ToLocalChecked()->Value();
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}
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double CJS_V8::ToDouble(v8::Local<v8::Value> pValue) {
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if (pValue.IsEmpty())
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return 0.0;
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v8::Local<v8::Context> context = m_isolate->GetCurrentContext();
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v8::MaybeLocal<v8::Number> maybe_number = pValue->ToNumber(context);
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if (maybe_number.IsEmpty())
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return 0.0;
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return maybe_number.ToLocalChecked()->Value();
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}
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WideString CJS_V8::ToWideString(v8::Local<v8::Value> pValue) {
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if (pValue.IsEmpty())
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return WideString();
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v8::Local<v8::Context> context = m_isolate->GetCurrentContext();
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v8::MaybeLocal<v8::String> maybe_string = pValue->ToString(context);
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if (maybe_string.IsEmpty())
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return WideString();
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v8::String::Utf8Value s(m_isolate, maybe_string.ToLocalChecked());
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return WideString::FromUTF8(ByteStringView(*s, s.length()));
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}
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ByteString CJS_V8::ToByteString(v8::Local<v8::Value> pValue) {
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if (pValue.IsEmpty())
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return ByteString();
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v8::Local<v8::Context> context = m_isolate->GetCurrentContext();
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v8::MaybeLocal<v8::String> maybe_string = pValue->ToString(context);
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if (maybe_string.IsEmpty())
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return ByteString();
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v8::String::Utf8Value s(m_isolate, maybe_string.ToLocalChecked());
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return ByteString(*s);
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}
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v8::Local<v8::Object> CJS_V8::ToObject(v8::Local<v8::Value> pValue) {
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if (pValue.IsEmpty() || !pValue->IsObject())
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return v8::Local<v8::Object>();
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v8::Local<v8::Context> context = m_isolate->GetCurrentContext();
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return pValue->ToObject(context).ToLocalChecked();
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}
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v8::Local<v8::Array> CJS_V8::ToArray(v8::Local<v8::Value> pValue) {
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if (pValue.IsEmpty() || !pValue->IsArray())
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return v8::Local<v8::Array>();
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v8::Local<v8::Context> context = m_isolate->GetCurrentContext();
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return v8::Local<v8::Array>::Cast(pValue->ToObject(context).ToLocalChecked());
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}
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void CJS_V8::SetConstArray(const WideString& name, v8::Local<v8::Array> array) {
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m_ConstArrays[name] = v8::Global<v8::Array>(GetIsolate(), array);
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}
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v8::Local<v8::Array> CJS_V8::GetConstArray(const WideString& name) {
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return v8::Local<v8::Array>::New(GetIsolate(), m_ConstArrays[name]);
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}
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#ifdef PDF_ENABLE_XFA
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CXFA_Object* CJS_V8::ToXFAObject(v8::Local<v8::Value> obj) {
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ASSERT(!obj.IsEmpty());
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if (!obj->IsObject())
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return nullptr;
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CFXJSE_HostObject* hostObj =
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FXJSE_RetrieveObjectBinding(obj.As<v8::Object>(), nullptr);
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if (!hostObj || hostObj->type() != CFXJSE_HostObject::kXFA)
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return nullptr;
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return static_cast<CXFA_Object*>(hostObj);
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}
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v8::Local<v8::Value> CJS_V8::NewXFAObject(
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CXFA_Object* obj,
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v8::Global<v8::FunctionTemplate>& tmpl) {
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v8::EscapableHandleScope scope(m_isolate);
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v8::Local<v8::FunctionTemplate> klass =
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v8::Local<v8::FunctionTemplate>::New(m_isolate, tmpl);
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v8::Local<v8::Object> object = klass->InstanceTemplate()->NewInstance();
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FXJSE_UpdateObjectBinding(object, obj);
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return scope.Escape(object);
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}
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#endif // PDF_ENABLE_XFA
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