blob: 2705ed9f3ccb168d1deb9d002635f48d71217272 [file] [log] [blame]
// Copyright 2018 The Goma 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 <sstream>
#include "benchmark/benchmark.h"
#include "cxx/include_processor/cpp_macro_expander.h"
#include "cxx/include_processor/cpp_parser.h"
#include "cxx/include_processor/cpp_token.h"
#include "cxx/include_processor/cpp_tokenizer.h"
#include "glog/logging.h"
#include "glog/stl_logging.h"
namespace devtools_goma {
void BM_MacroExpandRecursive(benchmark::State& state) {
std::ostringstream os;
os << "#define F0(x) x" << std::endl;
for (int i = 1; i < 100; ++i) {
os << "#define F" << i << "(x) F" << (i - 1) << "(x) + 1" << std::endl;
}
CppParser cpp_parser;
cpp_parser.AddStringInput(os.str(), "(string)");
cpp_parser.ProcessDirectives();
ArrayTokenList tokens;
CHECK(CppTokenizer::TokenizeAll("F99(1)", SpaceHandling::kKeep, &tokens));
// Test expectedly converted.
{
ArrayTokenList expected;
for (int i = 0; i < 99; ++i) {
expected.push_back(CppToken(1));
expected.back().string_value = "1";
expected.push_back(CppToken(CppToken::ADD));
expected.back().string_value = "+";
}
expected.push_back(CppToken(1));
ArrayTokenList actual =
CppMacroExpander(&cpp_parser).Expand(tokens, SpaceHandling::kSkip);
CHECK_EQ(expected, actual);
}
for (auto _ : state) {
(void)_;
(void)CppMacroExpander(&cpp_parser).Expand(tokens, SpaceHandling::kSkip);
}
state.SetItemsProcessed(state.iterations());
}
BENCHMARK(BM_MacroExpandRecursive);
} // namespace devtools_goma
BENCHMARK_MAIN();