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// Copyright 2020 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/fxv8.h"
#include "third_party/base/numerics/safe_conversions.h"
#include "v8/include/v8-container.h"
#include "v8/include/v8-date.h"
#include "v8/include/v8-exception.h"
#include "v8/include/v8-isolate.h"
#include "v8/include/v8-primitive.h"
#include "v8/include/v8-value.h"
namespace fxv8 {
bool IsUndefined(v8::Local<v8::Value> value) {
return !value.IsEmpty() && value->IsUndefined();
}
bool IsNull(v8::Local<v8::Value> value) {
return !value.IsEmpty() && value->IsNull();
}
bool IsBoolean(v8::Local<v8::Value> value) {
return !value.IsEmpty() && value->IsBoolean();
}
bool IsString(v8::Local<v8::Value> value) {
return !value.IsEmpty() && value->IsString();
}
bool IsNumber(v8::Local<v8::Value> value) {
return !value.IsEmpty() && value->IsNumber();
}
bool IsInteger(v8::Local<v8::Value> value) {
return !value.IsEmpty() && value->IsInt32();
}
bool IsObject(v8::Local<v8::Value> value) {
return !value.IsEmpty() && value->IsObject();
}
bool IsArray(v8::Local<v8::Value> value) {
return !value.IsEmpty() && value->IsArray();
}
bool IsDate(v8::Local<v8::Value> value) {
return !value.IsEmpty() && value->IsDate();
}
bool IsFunction(v8::Local<v8::Value> value) {
return !value.IsEmpty() && value->IsFunction();
}
v8::Local<v8::Value> NewNullHelper(v8::Isolate* pIsolate) {
return v8::Null(pIsolate);
}
v8::Local<v8::Value> NewUndefinedHelper(v8::Isolate* pIsolate) {
return v8::Undefined(pIsolate);
}
v8::Local<v8::Number> NewNumberHelper(v8::Isolate* pIsolate, int number) {
return v8::Int32::New(pIsolate, number);
}
v8::Local<v8::Number> NewNumberHelper(v8::Isolate* pIsolate, double number) {
return v8::Number::New(pIsolate, number);
}
v8::Local<v8::Number> NewNumberHelper(v8::Isolate* pIsolate, float number) {
return v8::Number::New(pIsolate, number);
}
v8::Local<v8::Boolean> NewBooleanHelper(v8::Isolate* pIsolate, bool b) {
return v8::Boolean::New(pIsolate, b);
}
v8::Local<v8::String> NewStringHelper(v8::Isolate* pIsolate,
ByteStringView str) {
return v8::String::NewFromUtf8(
pIsolate, str.unterminated_c_str(), v8::NewStringType::kNormal,
pdfium::base::checked_cast<int>(str.GetLength()))
.ToLocalChecked();
}
v8::Local<v8::String> NewStringHelper(v8::Isolate* pIsolate,
WideStringView str) {
return NewStringHelper(pIsolate, FX_UTF8Encode(str).AsStringView());
}
v8::Local<v8::Array> NewArrayHelper(v8::Isolate* pIsolate) {
return v8::Array::New(pIsolate);
}
v8::Local<v8::Array> NewArrayHelper(v8::Isolate* pIsolate,
pdfium::span<v8::Local<v8::Value>> values) {
v8::Local<v8::Array> result = NewArrayHelper(pIsolate);
for (size_t i = 0; i < values.size(); ++i) {
fxv8::ReentrantPutArrayElementHelper(
pIsolate, result, i,
values[i].IsEmpty() ? fxv8::NewUndefinedHelper(pIsolate) : values[i]);
}
return result;
}
v8::Local<v8::Object> NewObjectHelper(v8::Isolate* pIsolate) {
return v8::Object::New(pIsolate);
}
v8::Local<v8::Date> NewDateHelper(v8::Isolate* pIsolate, double d) {
return v8::Date::New(pIsolate->GetCurrentContext(), d)
.ToLocalChecked()
.As<v8::Date>();
}
WideString ToWideString(v8::Isolate* pIsolate, v8::Local<v8::String> pValue) {
v8::String::Utf8Value s(pIsolate, pValue);
return WideString::FromUTF8(ByteStringView(*s, s.length()));
}
ByteString ToByteString(v8::Isolate* pIsolate, v8::Local<v8::String> pValue) {
v8::String::Utf8Value s(pIsolate, pValue);
return ByteString(*s, s.length());
}
int ReentrantToInt32Helper(v8::Isolate* pIsolate, v8::Local<v8::Value> pValue) {
if (pValue.IsEmpty())
return 0;
v8::TryCatch squash_exceptions(pIsolate);
return pValue->Int32Value(pIsolate->GetCurrentContext()).FromMaybe(0);
}
bool ReentrantToBooleanHelper(v8::Isolate* pIsolate,
v8::Local<v8::Value> pValue) {
if (pValue.IsEmpty())
return false;
v8::TryCatch squash_exceptions(pIsolate);
return pValue->BooleanValue(pIsolate);
}
float ReentrantToFloatHelper(v8::Isolate* pIsolate,
v8::Local<v8::Value> pValue) {
return static_cast<float>(ReentrantToDoubleHelper(pIsolate, pValue));
}
double ReentrantToDoubleHelper(v8::Isolate* pIsolate,
v8::Local<v8::Value> pValue) {
if (pValue.IsEmpty())
return 0.0;
v8::TryCatch squash_exceptions(pIsolate);
return pValue->NumberValue(pIsolate->GetCurrentContext()).FromMaybe(0.0);
}
WideString ReentrantToWideStringHelper(v8::Isolate* pIsolate,
v8::Local<v8::Value> pValue) {
if (pValue.IsEmpty())
return WideString();
v8::TryCatch squash_exceptions(pIsolate);
v8::MaybeLocal<v8::String> maybe_string =
pValue->ToString(pIsolate->GetCurrentContext());
if (maybe_string.IsEmpty())
return WideString();
return ToWideString(pIsolate, maybe_string.ToLocalChecked());
}
ByteString ReentrantToByteStringHelper(v8::Isolate* pIsolate,
v8::Local<v8::Value> pValue) {
if (pValue.IsEmpty())
return ByteString();
v8::TryCatch squash_exceptions(pIsolate);
v8::MaybeLocal<v8::String> maybe_string =
pValue->ToString(pIsolate->GetCurrentContext());
if (maybe_string.IsEmpty())
return ByteString();
return ToByteString(pIsolate, maybe_string.ToLocalChecked());
}
v8::Local<v8::Object> ReentrantToObjectHelper(v8::Isolate* pIsolate,
v8::Local<v8::Value> pValue) {
if (!fxv8::IsObject(pValue))
return v8::Local<v8::Object>();
v8::TryCatch squash_exceptions(pIsolate);
v8::Local<v8::Context> context = pIsolate->GetCurrentContext();
return pValue->ToObject(context).ToLocalChecked();
}
v8::Local<v8::Array> ReentrantToArrayHelper(v8::Isolate* pIsolate,
v8::Local<v8::Value> pValue) {
if (!fxv8::IsArray(pValue))
return v8::Local<v8::Array>();
v8::TryCatch squash_exceptions(pIsolate);
v8::Local<v8::Context> context = pIsolate->GetCurrentContext();
return v8::Local<v8::Array>::Cast(pValue->ToObject(context).ToLocalChecked());
}
v8::Local<v8::Value> ReentrantGetObjectPropertyHelper(
v8::Isolate* pIsolate,
v8::Local<v8::Object> pObj,
ByteStringView bsUTF8PropertyName) {
if (pObj.IsEmpty())
return v8::Local<v8::Value>();
v8::TryCatch squash_exceptions(pIsolate);
v8::Local<v8::Value> val;
if (!pObj->Get(pIsolate->GetCurrentContext(),
NewStringHelper(pIsolate, bsUTF8PropertyName))
.ToLocal(&val)) {
return v8::Local<v8::Value>();
}
return val;
}
std::vector<WideString> ReentrantGetObjectPropertyNamesHelper(
v8::Isolate* pIsolate,
v8::Local<v8::Object> pObj) {
if (pObj.IsEmpty())
return std::vector<WideString>();
v8::TryCatch squash_exceptions(pIsolate);
v8::Local<v8::Array> val;
v8::Local<v8::Context> context = pIsolate->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(ReentrantToWideStringHelper(
pIsolate, val->Get(context, i).ToLocalChecked()));
}
return result;
}
bool ReentrantHasObjectOwnPropertyHelper(v8::Isolate* pIsolate,
v8::Local<v8::Object> pObj,
ByteStringView bsUTF8PropertyName) {
if (pObj.IsEmpty())
return false;
v8::TryCatch squash_exceptions(pIsolate);
v8::Local<v8::Context> pContext = pIsolate->GetCurrentContext();
v8::Local<v8::String> hKey =
fxv8::NewStringHelper(pIsolate, bsUTF8PropertyName);
return pObj->HasRealNamedProperty(pContext, hKey).FromJust();
}
bool ReentrantSetObjectOwnPropertyHelper(v8::Isolate* pIsolate,
v8::Local<v8::Object> pObj,
ByteStringView bsUTF8PropertyName,
v8::Local<v8::Value> pValue) {
if (pObj.IsEmpty() || pValue.IsEmpty())
return false;
v8::TryCatch squash_exceptions(pIsolate);
v8::Local<v8::String> name = NewStringHelper(pIsolate, bsUTF8PropertyName);
return pObj->DefineOwnProperty(pIsolate->GetCurrentContext(), name, pValue)
.FromMaybe(false);
}
bool ReentrantPutObjectPropertyHelper(v8::Isolate* pIsolate,
v8::Local<v8::Object> pObj,
ByteStringView bsUTF8PropertyName,
v8::Local<v8::Value> pPut) {
if (pObj.IsEmpty() || pPut.IsEmpty())
return false;
v8::TryCatch squash_exceptions(pIsolate);
v8::Local<v8::String> name = NewStringHelper(pIsolate, bsUTF8PropertyName);
v8::Maybe<bool> result = pObj->Set(pIsolate->GetCurrentContext(), name, pPut);
return result.IsJust() && result.FromJust();
}
void ReentrantDeleteObjectPropertyHelper(v8::Isolate* pIsolate,
v8::Local<v8::Object> pObj,
ByteStringView bsUTF8PropertyName) {
v8::TryCatch squash_exceptions(pIsolate);
pObj->Delete(pIsolate->GetCurrentContext(),
fxv8::NewStringHelper(pIsolate, bsUTF8PropertyName))
.FromJust();
}
bool ReentrantPutArrayElementHelper(v8::Isolate* pIsolate,
v8::Local<v8::Array> pArray,
size_t index,
v8::Local<v8::Value> pValue) {
if (pArray.IsEmpty())
return false;
v8::TryCatch squash_exceptions(pIsolate);
v8::Maybe<bool> result =
pArray->Set(pIsolate->GetCurrentContext(),
pdfium::base::checked_cast<uint32_t>(index), pValue);
return result.IsJust() && result.FromJust();
}
v8::Local<v8::Value> ReentrantGetArrayElementHelper(v8::Isolate* pIsolate,
v8::Local<v8::Array> pArray,
size_t index) {
if (pArray.IsEmpty())
return v8::Local<v8::Value>();
v8::TryCatch squash_exceptions(pIsolate);
v8::Local<v8::Value> val;
if (!pArray
->Get(pIsolate->GetCurrentContext(),
pdfium::base::checked_cast<uint32_t>(index))
.ToLocal(&val)) {
return v8::Local<v8::Value>();
}
return val;
}
size_t GetArrayLengthHelper(v8::Local<v8::Array> pArray) {
if (pArray.IsEmpty())
return 0;
return pArray->Length();
}
void ThrowExceptionHelper(v8::Isolate* pIsolate, ByteStringView str) {
pIsolate->ThrowException(NewStringHelper(pIsolate, str));
}
void ThrowExceptionHelper(v8::Isolate* pIsolate, WideStringView str) {
pIsolate->ThrowException(NewStringHelper(pIsolate, str));
}
} // namespace fxv8