mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
123 lines
3.4 KiB
C++
123 lines
3.4 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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* Generic AST walker.
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*/
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#pragma once
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#include <libjulia/ASTDataForward.h>
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#include <libjulia/Exceptions.h>
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#include <boost/variant.hpp>
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#include <boost/optional.hpp>
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#include <vector>
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#include <set>
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#include <map>
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namespace dev
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{
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namespace julia
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{
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/**
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* Generic AST walker.
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*/
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class ASTWalker: public boost::static_visitor<>
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{
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public:
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virtual ~ASTWalker() = default;
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virtual void operator()(Literal const&) {}
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virtual void operator()(Instruction const&) { assertThrow(false, OptimizerException, ""); }
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virtual void operator()(Identifier const&) {}
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virtual void operator()(FunctionalInstruction const& _instr);
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virtual void operator()(FunctionCall const& _funCall);
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virtual void operator()(ExpressionStatement const& _statement);
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virtual void operator()(Label const&) { assertThrow(false, OptimizerException, ""); }
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virtual void operator()(StackAssignment const&) { assertThrow(false, OptimizerException, ""); }
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virtual void operator()(Assignment const& _assignment);
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virtual void operator()(VariableDeclaration const& _varDecl);
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virtual void operator()(If const& _if);
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virtual void operator()(Switch const& _switch);
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virtual void operator()(FunctionDefinition const&);
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virtual void operator()(ForLoop const&);
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virtual void operator()(Block const& _block);
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virtual void visit(Statement const& _st)
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{
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boost::apply_visitor(*this, _st);
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}
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virtual void visit(Expression const& _e)
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{
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boost::apply_visitor(*this, _e);
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}
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protected:
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template <class T>
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void walkVector(T const& _statements)
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{
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for (auto const& statement: _statements)
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visit(statement);
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}
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};
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/**
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* Generic AST modifier (i.e. non-const version of ASTWalker).
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*/
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class ASTModifier: public boost::static_visitor<>
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{
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public:
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virtual ~ASTModifier() = default;
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virtual void operator()(Literal&) {}
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virtual void operator()(Instruction&) { assertThrow(false, OptimizerException, ""); }
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virtual void operator()(Identifier&) {}
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virtual void operator()(FunctionalInstruction& _instr);
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virtual void operator()(FunctionCall& _funCall);
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virtual void operator()(ExpressionStatement& _statement);
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virtual void operator()(Label&) { assertThrow(false, OptimizerException, ""); }
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virtual void operator()(StackAssignment&) { assertThrow(false, OptimizerException, ""); }
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virtual void operator()(Assignment& _assignment);
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virtual void operator()(VariableDeclaration& _varDecl);
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virtual void operator()(If& _if);
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virtual void operator()(Switch& _switch);
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virtual void operator()(FunctionDefinition&);
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virtual void operator()(ForLoop&);
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virtual void operator()(Block& _block);
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virtual void visit(Statement& _st)
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{
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boost::apply_visitor(*this, _st);
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}
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virtual void visit(Expression& _e)
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{
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boost::apply_visitor(*this, _e);
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}
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protected:
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template <class T>
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void walkVector(T&& _statements)
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{
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for (auto& st: _statements)
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visit(st);
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}
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};
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}
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}
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