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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/>.
*/
#pragma once
#include <libsolidity/analysis/TypeChecker.h>
#include <libsolidity/ast/Types.h>
#include <libsolidity/ast/ASTAnnotations.h>
#include <libsolidity/ast/ASTForward.h>
#include <libsolidity/ast/ASTVisitor.h>
namespace dev
{
namespace solidity
{
class ErrorReporter;
/**
* This module performs analyses on the AST that are done after type checking and assignments of types:
* - whether there are circular references in constant state variables
* @TODO factor out each use-case into an individual class (but do the traversal only once)
*/
class PostTypeChecker: private ASTConstVisitor
{
public:
/// @param _errorReporter provides the error logging functionality.
PostTypeChecker(ErrorReporter& _errorReporter): m_errorReporter(_errorReporter) {}
bool check(ASTNode const& _astRoot);
private:
/// Adds a new error to the list of errors.
void typeError(SourceLocation const& _location, std::string const& _description);
bool visit(ContractDefinition const& _contract) override;
void endVisit(ContractDefinition const& _contract) override;
bool visit(VariableDeclaration const& _variable) override;
void endVisit(VariableDeclaration const& _variable) override;
bool visit(Identifier const& _identifier) override;
VariableDeclaration const* findCycle(VariableDeclaration const& _startingFrom);
ErrorReporter& m_errorReporter;
VariableDeclaration const* m_currentConstVariable = nullptr;
std::vector<VariableDeclaration const*> m_constVariables; ///< Required for determinism.
std::map<VariableDeclaration const*, std::set<VariableDeclaration const*>> m_constVariableDependencies;
};
}
}
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