solidity/libyul/backends/evm/NoOutputAssembly.h
Djordje Mijovic 6f97e6153c [yul] Adding support for accessing subobjects via .
Co-authored-by: Kamil Śliwak <kamil.sliwak@codepoets.it>
2020-07-21 17:56:11 +02:00

96 lines
3.0 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/>.
*/
// SPDX-License-Identifier: GPL-3.0
/**
* Assembly interface that ignores everything. Can be used as a backend for a compilation dry-run.
*/
#pragma once
#include <libyul/backends/evm/AbstractAssembly.h>
#include <libyul/backends/evm/EVMDialect.h>
#include <libevmasm/LinkerObject.h>
#include <map>
namespace solidity::langutil
{
struct SourceLocation;
}
namespace solidity::yul
{
/**
* Assembly class that just ignores everything and only performs stack counting.
* The purpose is to use this assembly for compilation dry-runs.
*/
class NoOutputAssembly: public AbstractAssembly
{
public:
explicit NoOutputAssembly(bool _evm15 = false): m_evm15(_evm15) { }
~NoOutputAssembly() override = default;
void setSourceLocation(langutil::SourceLocation const&) override {}
int stackHeight() const override { return m_stackHeight; }
void setStackHeight(int height) override { m_stackHeight = height; }
void appendInstruction(evmasm::Instruction _instruction) override;
void appendConstant(u256 const& _constant) override;
void appendLabel(LabelID _labelId) override;
void appendLabelReference(LabelID _labelId) override;
LabelID newLabelId() override;
LabelID namedLabel(std::string const& _name) override;
void appendLinkerSymbol(std::string const& _name) override;
void appendJump(int _stackDiffAfter, JumpType _jumpType) override;
void appendJumpTo(LabelID _labelId, int _stackDiffAfter, JumpType _jumpType) override;
void appendJumpToIf(LabelID _labelId, JumpType _jumpType) override;
void appendBeginsub(LabelID _labelId, int _arguments) override;
void appendJumpsub(LabelID _labelId, int _arguments, int _returns) override;
void appendReturnsub(int _returns, int _stackDiffAfter) override;
void appendAssemblySize() override;
std::pair<std::shared_ptr<AbstractAssembly>, SubID> createSubAssembly() override;
void appendDataOffset(std::vector<SubID> const& _subPath) override;
void appendDataSize(std::vector<SubID> const& _subPath) override;
SubID appendData(bytes const& _data) override;
void appendImmutable(std::string const& _identifier) override;
void appendImmutableAssignment(std::string const& _identifier) override;
void markAsInvalid() override {}
private:
bool m_evm15 = false; ///< if true, switch to evm1.5 mode
int m_stackHeight = 0;
};
/**
* EVM dialect that does not generate any code.
*/
struct NoOutputEVMDialect: public EVMDialect
{
explicit NoOutputEVMDialect(EVMDialect const& _copyFrom);
};
}