/*

  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 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();

}