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// Copyright 2022 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.
#ifndef V8_CCTEST_JSONTREAM_HELPER_H_
#define V8_CCTEST_JSONTREAM_HELPER_H_
#include "include/v8-profiler.h"
#include "test/cctest/collector.h"
namespace v8 {
namespace internal {
class TestJSONStream : public v8::OutputStream {
public:
TestJSONStream() : eos_signaled_(0), abort_countdown_(-1) {}
explicit TestJSONStream(int abort_countdown)
: eos_signaled_(0), abort_countdown_(abort_countdown) {}
~TestJSONStream() override = default;
void EndOfStream() override { ++eos_signaled_; }
OutputStream::WriteResult WriteAsciiChunk(char* buffer,
int chars_written) override {
if (abort_countdown_ > 0) --abort_countdown_;
if (abort_countdown_ == 0) return OutputStream::kAbort;
CHECK_GT(chars_written, 0);
v8::base::Vector<char> chunk = buffer_.AddBlock(chars_written, '\0');
i::MemCopy(chunk.begin(), buffer, chars_written);
return OutputStream::kContinue;
}
virtual WriteResult WriteUint32Chunk(uint32_t* buffer, int chars_written) {
UNREACHABLE();
}
void WriteTo(v8::base::Vector<char> dest) { buffer_.WriteTo(dest); }
int eos_signaled() { return eos_signaled_; }
int size() { return buffer_.size(); }
private:
i::Collector<char> buffer_;
int eos_signaled_;
int abort_countdown_;
};
class OneByteResource : public v8::String::ExternalOneByteStringResource {
public:
explicit OneByteResource(v8::base::Vector<char> string)
: data_(string.begin()) {
length_ = string.length();
}
const char* data() const override { return data_; }
size_t length() const override { return length_; }
private:
const char* data_;
size_t length_;
};
} // namespace internal
} // namespace v8
#endif // V8_CCTEST_JSONTREAM_HELPER_H_
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