/*

  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

#pragma once

#include <libsolidity/ast/ASTVisitor.h>

#include <liblangutil/ErrorReporter.h>

namespace solidity::frontend

{

/**

 * Validates access and initialization of immutable variables:

 * must be directly initialized in a c'tor or inline

*/

class ImmutableValidator: private ASTConstVisitor

{

public:

  ImmutableValidator(langutil::ErrorReporter& _errorReporter, ContractDefinition const& _contractDefinition):

    m_mostDerivedContract(_contractDefinition),

    m_errorReporter(_errorReporter)

  { }

  void analyze();

private:

  bool visit(FunctionDefinition const& _functionDefinition);

  void endVisit(MemberAccess const& _memberAccess);

  void endVisit(Identifier const& _identifier);

  void analyseVariableReference(Declaration const* _variableReference, Expression const& _expression);

  ContractDefinition const& m_mostDerivedContract;

  langutil::ErrorReporter& m_errorReporter;

};

}