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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/>.
*/
/**
* Yul dialects for EVM.
*/
#pragma once
#include <libyul/Dialect.h>
#include <libyul/backends/evm/AbstractAssembly.h>
#include <map>
namespace yul
{
class YulString;
using Type = YulString;
struct FunctionCall;
struct Object;
struct BuiltinFunctionForEVM: BuiltinFunction
{
/// Function to generate code for the given function call and append it to the abstract
/// assembly. The third parameter is called to visit (and generate code for) the arguments
/// from right to left.
std::function<void(FunctionCall const&, AbstractAssembly&, std::function<void()>)> generateCode;
};
/**
* Yul dialect for EVM as a backend.
* The main difference is that the builtin functions take an AbstractAssembly for the
* code generation.
*/
struct EVMDialect: public Dialect
{
EVMDialect(AsmFlavour _flavour, bool _objectAccess);
/// @returns the builtin function of the given name or a nullptr if it is not a builtin function.
BuiltinFunctionForEVM const* builtin(YulString _name) const override;
static std::shared_ptr<EVMDialect> looseAssemblyForEVM();
static std::shared_ptr<EVMDialect> strictAssemblyForEVM();
static std::shared_ptr<EVMDialect> strictAssemblyForEVMObjects();
static std::shared_ptr<EVMDialect> yulForEVM();
bool providesObjectAccess() const { return m_objectAccess; }
/// Sets the mapping of current sub assembly IDs. Used during code generation.
void setSubIDs(std::map<YulString, AbstractAssembly::SubID> _subIDs);
/// Sets the current object. Used during code generation.
void setCurrentObject(Object const* _object);
private:
void addFunction(
std::string _name,
size_t _params,
size_t _returns,
bool _movable,
std::function<void(FunctionCall const&, AbstractAssembly&, std::function<void()>)> _generateCode
);
bool m_objectAccess;
Object const* m_currentObject = nullptr;
/// Mapping from named objects to abstract assembly sub IDs.
std::map<YulString, AbstractAssembly::SubID> m_subIDs;
std::map<YulString, BuiltinFunctionForEVM> m_functions;
};
}
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