solidity/libsolidity/analysis/Scoper.cpp

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2020-08-06 12:46:04 +00:00
/*
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
#include <libsolidity/analysis/Scoper.h>
#include <libsolidity/ast/AST.h>
using namespace std;
using namespace solidity;
using namespace solidity::frontend;
void Scoper::assignScopes(ASTNode const& _astRoot)
{
Scoper scoper;
_astRoot.accept(scoper);
}
bool Scoper::visit(ContractDefinition const& _contract)
{
solAssert(m_contract == nullptr, "");
m_contract = &_contract;
return ASTConstVisitor::visit(_contract);
}
void Scoper::endVisit(ContractDefinition const& _contract)
{
solAssert(m_contract == &_contract, "");
m_contract = nullptr;
ASTConstVisitor::endVisit(_contract);
}
bool Scoper::visitNode(ASTNode const& _node)
{
if (auto const* scopable = dynamic_cast<Scopable const*>(&_node))
{
scopable->annotation().scope = m_scopes.empty() ? nullptr : m_scopes.back();
scopable->annotation().contract = m_contract;
}
if (dynamic_cast<ScopeOpener const*>(&_node))
m_scopes.push_back(&_node);
return true;
}
void Scoper::endVisitNode(ASTNode const& _node)
{
if (dynamic_cast<ScopeOpener const*>(&_node))
m_scopes.pop_back();
}