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- // Copyright 2013 The Chromium 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 "gin/arguments.h"
- #include "base/strings/stringprintf.h"
- #include "gin/converter.h"
- #include "v8/include/v8-exception.h"
- #include "v8/include/v8-isolate.h"
- #include "v8/include/v8-object.h"
- #include "v8/include/v8-template.h"
- namespace gin {
- Arguments::Arguments()
- : isolate_(nullptr), info_for_function_(nullptr), is_for_property_(false) {}
- Arguments::Arguments(const v8::FunctionCallbackInfo<v8::Value>& info)
- : isolate_(info.GetIsolate()),
- info_for_function_(&info),
- is_for_property_(false) {}
- Arguments::Arguments(const v8::PropertyCallbackInfo<v8::Value>& info)
- : isolate_(info.GetIsolate()),
- info_for_property_(&info),
- is_for_property_(true) {}
- Arguments::~Arguments() = default;
- v8::Local<v8::Value> Arguments::PeekNext() const {
- if (is_for_property_)
- return v8::Local<v8::Value>();
- if (next_ >= info_for_function_->Length())
- return v8::Local<v8::Value>();
- return (*info_for_function_)[next_];
- }
- std::vector<v8::Local<v8::Value>> Arguments::GetAll() const {
- std::vector<v8::Local<v8::Value>> result;
- if (is_for_property_)
- return result;
- int length = info_for_function_->Length();
- if (length == 0)
- return result;
- result.reserve(length);
- for (int i = 0; i < length; ++i)
- result.push_back((*info_for_function_)[i]);
- return result;
- }
- v8::Local<v8::Context> Arguments::GetHolderCreationContext() const {
- v8::Local<v8::Object> holder = is_for_property_
- ? info_for_property_->Holder()
- : info_for_function_->Holder();
- return holder->GetCreationContextChecked();
- }
- std::string V8TypeAsString(v8::Isolate* isolate, v8::Local<v8::Value> value) {
- if (value.IsEmpty())
- return "<empty handle>";
- if (value->IsUndefined())
- return "undefined";
- if (value->IsNull())
- return "null";
- std::string result;
- if (!ConvertFromV8(isolate, value, &result))
- return std::string();
- return result;
- }
- void Arguments::ThrowError() const {
- if (is_for_property_)
- return ThrowTypeError("Error processing property accessor arguments.");
- if (insufficient_arguments_)
- return ThrowTypeError("Insufficient number of arguments.");
- v8::Local<v8::Value> value = (*info_for_function_)[next_ - 1];
- return ThrowTypeError(base::StringPrintf(
- "Error processing argument at index %d, conversion failure from %s",
- next_ - 1, V8TypeAsString(isolate_, value).c_str()));
- }
- void Arguments::ThrowTypeError(const std::string& message) const {
- isolate_->ThrowException(v8::Exception::TypeError(
- StringToV8(isolate_, message)));
- }
- bool Arguments::IsConstructCall() const {
- return !is_for_property_ && info_for_function_->IsConstructCall();
- }
- } // namespace gin
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