solidity/libyul/optimiser/ASTCopier.cpp

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/*
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/>.
*/
// SPDX-License-Identifier: GPL-3.0
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/**
* Creates an independent copy of an AST, renaming identifiers to be unique.
*/
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#include <libyul/optimiser/ASTCopier.h>
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#include <libyul/AST.h>
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#include <libsolutil/Common.h>
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using namespace std;
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using namespace solidity;
using namespace solidity::yul;
using namespace solidity::util;
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Statement ASTCopier::operator()(ExpressionStatement const& _statement)
{
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return ExpressionStatement{ _statement.debugData, translate(_statement.expression) };
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}
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Statement ASTCopier::operator()(VariableDeclaration const& _varDecl)
{
return VariableDeclaration{
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_varDecl.debugData,
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translateVector(_varDecl.variables),
translate(_varDecl.value)
};
}
Statement ASTCopier::operator()(Assignment const& _assignment)
{
return Assignment{
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_assignment.debugData,
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translateVector(_assignment.variableNames),
translate(_assignment.value)
};
}
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Expression ASTCopier::operator()(FunctionCall const& _call)
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{
return FunctionCall{
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_call.debugData,
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translate(_call.functionName),
translateVector(_call.arguments)
};
}
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Expression ASTCopier::operator()(Identifier const& _identifier)
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{
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return translate(_identifier);
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}
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Expression ASTCopier::operator()(Literal const& _literal)
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{
return translate(_literal);
}
Statement ASTCopier::operator()(If const& _if)
{
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return If{_if.debugData, translate(_if.condition), translate(_if.body)};
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}
Statement ASTCopier::operator()(Switch const& _switch)
{
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return Switch{_switch.debugData, translate(_switch.expression), translateVector(_switch.cases)};
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}
Statement ASTCopier::operator()(FunctionDefinition const& _function)
{
YulString translatedName = translateIdentifier(_function.name);
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enterFunction(_function);
ScopeGuard g([&]() { this->leaveFunction(_function); });
return FunctionDefinition{
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_function.debugData,
translatedName,
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translateVector(_function.parameters),
translateVector(_function.returnVariables),
translate(_function.body)
};
}
Statement ASTCopier::operator()(ForLoop const& _forLoop)
{
enterScope(_forLoop.pre);
ScopeGuard g([&]() { this->leaveScope(_forLoop.pre); });
return ForLoop{
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_forLoop.debugData,
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translate(_forLoop.pre),
translate(_forLoop.condition),
translate(_forLoop.post),
translate(_forLoop.body)
};
}
Statement ASTCopier::operator()(Break const& _break)
{
return Break{ _break };
}
Statement ASTCopier::operator()(Continue const& _continue)
{
return Continue{ _continue };
}
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Statement ASTCopier::operator()(Leave const& _leaveStatement)
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{
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return Leave{_leaveStatement};
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}
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Statement ASTCopier::operator ()(Block const& _block)
{
return translate(_block);
}
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Expression ASTCopier::translate(Expression const& _expression)
{
return std::visit(static_cast<ExpressionCopier&>(*this), _expression);
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}
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Statement ASTCopier::translate(Statement const& _statement)
{
return std::visit(static_cast<StatementCopier&>(*this), _statement);
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}
Block ASTCopier::translate(Block const& _block)
{
enterScope(_block);
ScopeGuard g([&]() { this->leaveScope(_block); });
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return Block{_block.debugData, translateVector(_block.statements)};
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}
Case ASTCopier::translate(Case const& _case)
{
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return Case{_case.debugData, translate(_case.value), translate(_case.body)};
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}
Identifier ASTCopier::translate(Identifier const& _identifier)
{
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return Identifier{_identifier.debugData, translateIdentifier(_identifier.name)};
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}
Literal ASTCopier::translate(Literal const& _literal)
{
return _literal;
}
TypedName ASTCopier::translate(TypedName const& _typedName)
{
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return TypedName{_typedName.debugData, translateIdentifier(_typedName.name), _typedName.type};
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}
YulString FunctionCopier::translateIdentifier(YulString _name)
{
if (m_translations.count(_name))
return m_translations.at(_name);
return _name;
}