VMFace.h

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/*
        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/>.
*/
#pragma once

#include <memory>
#include <libdevcore/Exceptions.h>
#include "ExtVMFace.h"

namespace dev
{
namespace eth
{

struct VMException: virtual Exception {};
#define ETH_SIMPLE_EXCEPTION_VM(X) struct X: virtual VMException { const char* what() const noexcept override { return #X; } }
ETH_SIMPLE_EXCEPTION_VM(BadInstruction);
ETH_SIMPLE_EXCEPTION_VM(BadJumpDestination);
ETH_SIMPLE_EXCEPTION_VM(OutOfGas);
ETH_SIMPLE_EXCEPTION_VM(OutOfStack);
ETH_SIMPLE_EXCEPTION_VM(StackUnderflow);
ETH_SIMPLE_EXCEPTION_VM(CreateWithValue);


class VMFace
{
public:
        VMFace() = default;
        virtual ~VMFace() = default;
        VMFace(VMFace const&) = delete;
        VMFace& operator=(VMFace const&) = delete;

        virtual owning_bytes_ref exec(u256& io_gas, ExtVMFace& _ext, OnOpFunc const& _onOp) = 0;
};

}
}