mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
72 lines
1.9 KiB
C++
72 lines
1.9 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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* Dialects for Wasm.
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*/
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#pragma once
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#include <libyul/Dialect.h>
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#include <map>
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namespace solidity::yul
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{
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class YulString;
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using Type = YulString;
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struct FunctionCall;
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struct Object;
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/**
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* Yul dialect for Wasm as a backend.
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*
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* Builtin functions are a subset of the wasm instructions.
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*
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* There is a builtin function `i32.drop` that takes an i32, while `i64.drop` takes i64.
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*
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*/
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struct WasmDialect: public Dialect
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{
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WasmDialect();
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BuiltinFunction const* builtin(YulString _name) const override;
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BuiltinFunction const* discardFunction(YulString _type) const override;
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BuiltinFunction const* equalityFunction(YulString _type) const override;
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BuiltinFunction const* booleanNegationFunction() const override { return builtin("i32.eqz"_yulstring); }
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std::set<YulString> fixedFunctionNames() const override { return {"main"_yulstring}; }
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static WasmDialect const& instance();
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private:
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void addExternals();
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void addFunction(
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std::string _name,
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std::vector<YulString> _params,
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std::vector<YulString> _returns,
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bool _movable = true,
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std::vector<std::optional<LiteralKind>> _literalArguments = std::vector<std::optional<LiteralKind>>{}
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);
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std::map<YulString, BuiltinFunction> m_functions;
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};
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}
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