path: root/liblll/CodeFragment.h

/*
    This file is part of cpp-ethereum.

    cpp-ethereum 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.

    cpp-ethereum 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 cpp-ethereum.  If not, see <http://www.gnu.org/licenses/>.
*/
/** @file CodeFragment.h
 * @author Gav Wood <i@gavwood.com>
 * @date 2014
 */

#pragma once

#include <libdevcore/Common.h>
#include <libevmasm/Instruction.h>
#include <libevmasm/Assembly.h>
#include "Exceptions.h"

namespace boost { namespace spirit { class utree; } }
namespace sp = boost::spirit;

namespace dev
{
namespace eth
{

struct CompilerState;

class CodeFragment
{
public:
    CodeFragment() {}
    CodeFragment(sp::utree const& _t, CompilerState& _s, bool _allowASM = false);

    static CodeFragment compile(std::string const& _src, CompilerState& _s);

    /// Consolidates data and compiles code.
    Assembly& assembly(CompilerState const& _cs) { finalise(_cs); return m_asm; }

private:
    void finalise(CompilerState const& _cs);

    template <class T> void error() const { BOOST_THROW_EXCEPTION(T() ); }
    template <class T> void error(std::string const& reason) const {
        auto err = T();
        err << errinfo_comment(reason);
        BOOST_THROW_EXCEPTION(err);
    }
    void constructOperation(sp::utree const& _t, CompilerState& _s);

    bool m_finalised = false;
    Assembly m_asm;
};

static const CodeFragment NullCodeFragment;

}
}