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/*
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/>.
*/
/**
* @author Christian <c@ethdev.com>
* @date 2016
* Solidity inline assembly parser.
*/
#pragma once
#include <memory>
#include <vector>
#include <libyul/AsmData.h>
#include <liblangutil/SourceLocation.h>
#include <liblangutil/Scanner.h>
#include <liblangutil/ParserBase.h>
namespace yul
{
class Parser: public langutil::ParserBase
{
public:
explicit Parser(langutil::ErrorReporter& _errorReporter, AsmFlavour _flavour = AsmFlavour::Loose):
ParserBase(_errorReporter), m_flavour(_flavour) {}
/// Parses an inline assembly block starting with `{` and ending with `}`.
/// @param _reuseScanner if true, do check for end of input after the `}`.
/// @returns an empty shared pointer on error.
std::shared_ptr<Block> parse(std::shared_ptr<langutil::Scanner> const& _scanner, bool _reuseScanner);
protected:
using ElementaryOperation = boost::variant<Instruction, Literal, Identifier>;
/// Creates an inline assembly node with the given source location.
template <class T> T createWithLocation(langutil::SourceLocation const& _loc = {}) const
{
T r;
r.location = _loc;
if (r.location.isEmpty())
{
r.location.start = position();
r.location.end = endPosition();
}
if (!r.location.source)
r.location.source = m_scanner->charStream();
return r;
}
langutil::SourceLocation location() const { return {position(), endPosition(), m_scanner->charStream()}; }
Block parseBlock();
Statement parseStatement();
Case parseCase();
ForLoop parseForLoop();
/// Parses a functional expression that has to push exactly one stack element
Expression parseExpression();
static std::map<std::string, dev::solidity::Instruction> const& instructions();
static std::map<dev::solidity::Instruction, std::string> const& instructionNames();
/// Parses an elementary operation, i.e. a literal, identifier or instruction.
/// This will parse instructions even in strict mode as part of the full parser
/// for FunctionalInstruction.
ElementaryOperation parseElementaryOperation();
VariableDeclaration parseVariableDeclaration();
FunctionDefinition parseFunctionDefinition();
Expression parseCall(ElementaryOperation&& _initialOp);
TypedName parseTypedName();
std::string expectAsmIdentifier();
static bool isValidNumberLiteral(std::string const& _literal);
private:
AsmFlavour m_flavour = AsmFlavour::Loose;
};
}
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