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