mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
84 lines
3.1 KiB
C++
84 lines
3.1 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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// SPDX-License-Identifier: GPL-3.0
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/**
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* Miscellaneous utilities for use in IR generator.
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*/
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#pragma once
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#include <libsolidity/ast/AST.h>
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#include <algorithm>
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#include <string>
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namespace solidity::frontend
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{
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/**
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* Structure that describes arity and co-arity of a Yul function, i.e. the number of its inputs and outputs.
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*/
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struct YulArity
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{
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explicit YulArity(size_t _in, size_t _out): in(_in), out(_out) {}
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static YulArity fromType(FunctionType const& _functionType);
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bool operator==(YulArity const& _other) const { return in == _other.in && out == _other.out; }
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bool operator!=(YulArity const& _other) const { return !(*this == _other); }
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size_t in; /// Number of input parameters
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size_t out; /// Number of output parameters
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};
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struct IRNames
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{
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static std::string function(FunctionDefinition const& _function);
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static std::string function(VariableDeclaration const& _varDecl);
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static std::string creationObject(ContractDefinition const& _contract);
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static std::string runtimeObject(ContractDefinition const& _contract);
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static std::string internalDispatch(YulArity const& _arity);
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static std::string implicitConstructor(ContractDefinition const& _contract);
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static std::string constantValueFunction(VariableDeclaration const& _constant);
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static std::string localVariable(VariableDeclaration const& _declaration);
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static std::string localVariable(Expression const& _expression);
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/// @returns the variable name that can be used to inspect the success or failure of an external
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/// function call that was invoked as part of the try statement.
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static std::string trySuccessConditionVariable(Expression const& _expression);
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static std::string tupleComponent(size_t _i);
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static std::string zeroValue(Type const& _type, std::string const& _variableName);
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};
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struct IRHelpers
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{
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static FunctionDefinition const* referencedFunctionDeclaration(Expression const& _expression);
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};
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}
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// Overloading std::less() makes it possible to use YulArity as a map key. We could define operator<
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// instead but such an operator would be a bit ambiguous (e.g. YulArity{2, 2} would be be greater than
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// YulArity{1, 10} in lexicographical order but the latter has greater total number of inputs and outputs).
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template<>
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struct std::less<solidity::frontend::YulArity>
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{
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bool operator() (solidity::frontend::YulArity const& _lhs, solidity::frontend::YulArity const& _rhs) const
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{
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return _lhs.in < _rhs.in || (_lhs.in == _rhs.in && _lhs.out < _rhs.out);
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}
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};
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