solidity/tools/yulPhaser/Common.h
2020-03-18 13:30:58 +01:00

78 lines
2.2 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/>.
*/
/**
* Miscellaneous utilities for use in yul-phaser.
*/
#pragma once
#include <iostream>
#include <map>
#include <string>
#include <vector>
namespace solidity::phaser
{
/// Loads the whole file into memory, splits the content into lines, strips newlines and
/// returns the result as a list of strings.
///
/// Throws FileOpenError if the file does not exist or cannot be opened for reading.
/// Throws FileReadError if any read operation fails during the whole process.
std::vector<std::string> readLinesFromFile(std::string const& _path);
/// Reads a token from the input stream and translates it to a string using a map.
/// Sets the failbit in the stream if there's no matching value in the map.
template <typename C>
std::istream& deserializeChoice(
std::istream& _inputStream,
C& _choice,
std::map<std::string, C> const& _stringToValueMap
)
{
std::string deserializedValue;
_inputStream >> deserializedValue;
auto const& pair = _stringToValueMap.find(deserializedValue);
if (pair != _stringToValueMap.end())
_choice = pair->second;
else
_inputStream.setstate(std::ios_base::failbit);
return _inputStream;
}
/// Translates a value to a string using a map and prints it to the output stream.
/// Sets the failbit if the value is not in the map.
template <typename C>
std::ostream& serializeChoice(
std::ostream& _outputStream,
C const& _choice,
std::map<C, std::string> const& _valueToStringMap
)
{
auto const& pair = _valueToStringMap.find(_choice);
if (pair != _valueToStringMap.end())
_outputStream << pair->second;
else
_outputStream.setstate(std::ios_base::failbit);
return _outputStream;
}
}