mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
75 lines
2.4 KiB
C++
75 lines
2.4 KiB
C++
/*
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This file is part of solidity.
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solidity is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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solidity is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with solidity. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <libsolidity/analysis/TypeChecker.h>
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#include <libsolidity/ast/Types.h>
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#include <libsolidity/ast/ASTAnnotations.h>
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#include <libsolidity/ast/ASTForward.h>
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#include <libsolidity/ast/ASTVisitor.h>
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namespace langutil
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{
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class ErrorReporter;
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struct SourceLocation;
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}
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namespace dev
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{
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namespace solidity
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{
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/**
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* This module performs analyses on the AST that are done after type checking and assignments of types:
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* - whether there are circular references in constant state variables
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* - whether override specifiers are actually contracts
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* @TODO factor out each use-case into an individual class (but do the traversal only once)
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*/
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class PostTypeChecker: private ASTConstVisitor
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{
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public:
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/// @param _errorReporter provides the error logging functionality.
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PostTypeChecker(langutil::ErrorReporter& _errorReporter): m_errorReporter(_errorReporter) {}
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bool check(ASTNode const& _astRoot);
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private:
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/// Adds a new error to the list of errors.
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void typeError(langutil::SourceLocation const& _location, std::string const& _description);
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bool visit(ContractDefinition const& _contract) override;
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void endVisit(ContractDefinition const& _contract) override;
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void endVisit(OverrideSpecifier const& _overrideSpecifier) override;
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bool visit(VariableDeclaration const& _variable) override;
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void endVisit(VariableDeclaration const& _variable) override;
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bool visit(Identifier const& _identifier) override;
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VariableDeclaration const* findCycle(VariableDeclaration const& _startingFrom);
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langutil::ErrorReporter& m_errorReporter;
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VariableDeclaration const* m_currentConstVariable = nullptr;
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std::vector<VariableDeclaration const*> m_constVariables; ///< Required for determinism.
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std::map<VariableDeclaration const*, std::set<VariableDeclaration const*>> m_constVariableDependencies;
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};
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}
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}
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