path: root/libsolidity/inlineasm/AsmParser.h

/*
    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 <libsolidity/inlineasm/AsmData.h>
#include <libsolidity/parsing/ParserBase.h>

namespace dev
{
namespace solidity
{
namespace assembly
{

class Parser: public ParserBase
{
public:
    Parser(ErrorList& _errors): ParserBase(_errors) {}

    /// Parses an inline assembly block starting with `{` and ending with `}`.
    /// @returns an empty shared pointer on error.
    std::shared_ptr<Block> parse(std::shared_ptr<Scanner> const& _scanner);

protected:
    /// Creates an inline assembly node with the given source location.
    template <class T> T createWithLocation(SourceLocation const& _loc = SourceLocation())
    {
        T r;
        r.location = _loc;
        if (r.location.isEmpty())
        {
            r.location.start = position();
            r.location.end = endPosition();
        }
        if (!r.location.sourceName)
            r.location.sourceName = sourceName();
        return r;
    }
    SourceLocation location() const { return SourceLocation(position(), endPosition(), sourceName()); }

    Block parseBlock();
    Statement parseStatement();
    /// Parses a functional expression that has to push exactly one stack element
    Statement parseExpression();
    Statement parseElementaryOperation(bool _onlySinglePusher = false);
    VariableDeclaration parseVariableDeclaration();
    FunctionalInstruction parseFunctionalInstruction(Statement&& _instruction);
};

}
}
}