mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
110 lines
3.6 KiB
C++
110 lines
3.6 KiB
C++
/*
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This file is part of solidity.
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solidity is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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solidity is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with solidity. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* Class that contains contextual information during IR generation.
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*/
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#pragma once
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#include <libsolidity/interface/OptimiserSettings.h>
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#include <libsolidity/codegen/MultiUseYulFunctionCollector.h>
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#include <liblangutil/EVMVersion.h>
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#include <libdevcore/Common.h>
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#include <string>
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#include <memory>
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#include <vector>
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namespace dev
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{
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namespace solidity
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{
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class ContractDefinition;
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class VariableDeclaration;
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class FunctionDefinition;
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class Expression;
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class YulUtilFunctions;
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/**
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* Class that contains contextual information during IR generation.
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*/
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class IRGenerationContext
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{
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public:
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IRGenerationContext(langutil::EVMVersion _evmVersion, OptimiserSettings _optimiserSettings):
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m_evmVersion(_evmVersion),
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m_optimiserSettings(std::move(_optimiserSettings)),
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m_functions(std::make_shared<MultiUseYulFunctionCollector>())
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{}
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std::shared_ptr<MultiUseYulFunctionCollector> functionCollector() const { return m_functions; }
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/// Sets the current inheritance hierarchy from derived to base.
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void setInheritanceHierarchy(std::vector<ContractDefinition const*> _hierarchy)
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{
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m_inheritanceHierarchy = std::move(_hierarchy);
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}
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std::string addLocalVariable(VariableDeclaration const& _varDecl);
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bool isLocalVariable(VariableDeclaration const& _varDecl) const { return m_localVariables.count(&_varDecl); }
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std::string localVariableName(VariableDeclaration const& _varDecl);
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void addStateVariable(VariableDeclaration const& _varDecl, u256 _storageOffset, unsigned _byteOffset);
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bool isStateVariable(VariableDeclaration const& _varDecl) const { return m_stateVariables.count(&_varDecl); }
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std::pair<u256, unsigned> storageLocationOfVariable(VariableDeclaration const& _varDecl) const
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{
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return m_stateVariables.at(&_varDecl);
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}
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std::string functionName(FunctionDefinition const& _function);
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FunctionDefinition const& virtualFunction(FunctionDefinition const& _functionDeclaration);
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std::string virtualFunctionName(FunctionDefinition const& _functionDeclaration);
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std::string newYulVariable();
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/// @returns the variable (or comma-separated list of variables) that contain
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/// the value of the given expression.
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std::string variable(Expression const& _expression);
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/// @returns the variable of a multi-variable expression. Variables are numbered
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/// starting from 1.
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std::string variablePart(Expression const& _expression, size_t _part);
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std::string internalDispatch(size_t _in, size_t _out);
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/// @returns a new copy of the utility function generator (but using the same function set).
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YulUtilFunctions utils();
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langutil::EVMVersion evmVersion() const { return m_evmVersion; };
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private:
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langutil::EVMVersion m_evmVersion;
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OptimiserSettings m_optimiserSettings;
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std::vector<ContractDefinition const*> m_inheritanceHierarchy;
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std::map<VariableDeclaration const*, std::string> m_localVariables;
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/// Storage offsets of state variables
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std::map<VariableDeclaration const*, std::pair<u256, unsigned>> m_stateVariables;
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std::shared_ptr<MultiUseYulFunctionCollector> m_functions;
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size_t m_varCounter = 0;
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};
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}
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}
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