/*

  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/ControlFlowGraph.h>

#include <libsolidity/analysis/ControlFlowBuilder.h>

using namespace solidity::langutil;

using namespace solidity::frontend;

bool CFG::constructFlow(ASTNode const& _astRoot)

{

  _astRoot.accept(*this);

  return !Error::containsErrors(m_errorReporter.errors());

}

bool CFG::visit(FunctionDefinition const& _function)

{

  if (_function.isImplemented() && _function.isFree())

    m_functionControlFlow[{nullptr, &_function}] = ControlFlowBuilder::createFunctionFlow(

      m_nodeContainer,

      _function,

      nullptr /* _contract */

    );

  return false;

}

bool CFG::visit(ContractDefinition const& _contract)

{

  for (ContractDefinition const* contract: _contract.annotation().linearizedBaseContracts)

    for (FunctionDefinition const* function: contract->definedFunctions())

      if (function->isImplemented())

        m_functionControlFlow[{&_contract, function}] =

          ControlFlowBuilder::createFunctionFlow(m_nodeContainer, *function, &_contract);

  return true;

}

FunctionFlow const& CFG::functionFlow(FunctionDefinition const& _function, ContractDefinition const* _contract) const

{

  return *m_functionControlFlow.at({_contract, &_function});

}

CFGNode* CFG::NodeContainer::newNode()

{

  m_nodes.emplace_back(std::make_unique<CFGNode>());

  return m_nodes.back().get();

}