solidity/libyul/AssemblyStack.h
2019-05-28 11:35:07 +02:00

117 lines
3.3 KiB
C++

/*
This file is part of solidity.
solidity is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
solidity is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with solidity. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* Full assembly stack that can support EVM-assembly and Yul as input and EVM, EVM1.5 and
* eWasm as output.
*/
#pragma once
#include <liblangutil/ErrorReporter.h>
#include <liblangutil/EVMVersion.h>
#include <libyul/Object.h>
#include <libyul/ObjectParser.h>
#include <libsolidity/interface/OptimiserSettings.h>
#include <libevmasm/LinkerObject.h>
#include <memory>
#include <string>
namespace langutil
{
class Scanner;
}
namespace yul
{
class AbstractAssembly;
struct MachineAssemblyObject
{
std::shared_ptr<dev::eth::LinkerObject> bytecode;
std::string assembly;
};
/*
* Full assembly stack that can support EVM-assembly and Yul as input and EVM, EVM1.5 and
* eWasm as output.
*/
class AssemblyStack
{
public:
enum class Language { Yul, Assembly, StrictAssembly, EWasm };
enum class Machine { EVM, EVM15, eWasm };
AssemblyStack():
AssemblyStack(langutil::EVMVersion{}, Language::Assembly, dev::solidity::OptimiserSettings::none())
{}
AssemblyStack(langutil::EVMVersion _evmVersion, Language _language, dev::solidity::OptimiserSettings _optimiserSettings):
m_language(_language),
m_evmVersion(_evmVersion),
m_optimiserSettings(std::move(_optimiserSettings)),
m_errorReporter(m_errors)
{}
/// @returns the scanner used during parsing
langutil::Scanner const& scanner() const;
/// Runs parsing and analysis steps, returns false if input cannot be assembled.
/// Multiple calls overwrite the previous state.
bool parseAndAnalyze(std::string const& _sourceName, std::string const& _source);
/// Run the optimizer suite. Can only be used with Yul or strict assembly.
/// If the settings (see constructor) disabled the optimizer, nothing is done here.
void optimize();
/// Run the assembly step (should only be called after parseAndAnalyze).
MachineAssemblyObject assemble(Machine _machine) const;
/// @returns the errors generated during parsing, analysis (and potentially assembly).
langutil::ErrorList const& errors() const { return m_errors; }
/// Pretty-print the input after having parsed it.
std::string print() const;
/// Return the parsed and analyzed object.
std::shared_ptr<Object> parserResult() const;
private:
bool analyzeParsed();
bool analyzeParsed(yul::Object& _object);
void compileEVM(yul::AbstractAssembly& _assembly, bool _evm15, bool _optimize) const;
void optimize(yul::Object& _object, bool _isCreation);
Language m_language = Language::Assembly;
langutil::EVMVersion m_evmVersion;
dev::solidity::OptimiserSettings m_optimiserSettings;
std::shared_ptr<langutil::Scanner> m_scanner;
bool m_analysisSuccessful = false;
std::shared_ptr<yul::Object> m_parserResult;
langutil::ErrorList m_errors;
langutil::ErrorReporter m_errorReporter;
};
}