/*

* Copyright (c) Facebook, Inc. and its affiliates.

*

* This source code is licensed under the MIT license found in the

* LICENSE file in the root directory of this source tree.

*/

#include "CompileJS.h"

#include "hermes/BCGen/HBC/BytecodeProviderFromSrc.h"

#include "hermes/Support/Algorithms.h"

#include "llvh/Support/SHA1.h"

namespace hermes {

bool compileJS(

const std::string &str,

const std::string &sourceURL,

std::string &bytecode,

bool optimize) {

hbc::CompileFlags flags{};

flags.optimize = optimize;

// Note that we are relying the zero termination provided by str.data(),

// because the parser requires it.

auto res = hbc::BCProviderFromSrc::createBCProviderFromSrc(

hermes::make_unique<hermes::Buffer>(

(const uint8_t *)str.data(), str.size()),

sourceURL,

flags);

if (!res.first)

return false;

llvh::raw_string_ostream bcstream(bytecode);

BytecodeGenerationOptions opts(::hermes::EmitBundle);

opts.optimizationEnabled = optimize;

hbc::BytecodeSerializer BS{bcstream, opts};

BS.serialize(

*res.first->getBytecodeModule(),

llvh::SHA1::hash(llvh::makeArrayRef(

reinterpret_cast<const uint8_t *>(str.data()), str.size())));

// Flush to string.

bcstream.flush();

return true;

}

bool compileJS(const std::string &str, std::string &bytecode, bool optimize) {

return compileJS(str, "", bytecode, optimize);

}

} // namespace hermes