mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
122 lines
3.6 KiB
C++
122 lines
3.6 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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// SPDX-License-Identifier: GPL-3.0
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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 solidity::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 solidity::frontend
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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 variables
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* - whether override specifiers are actually contracts
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* - whether a modifier is in a function header
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* - whether an event is used outside of an emit statement
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* - whether a variable is declared in a interface
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* - whether an error uses a reserved signature
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*
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* When adding a new checker, make sure a visitor that forwards calls that your
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* checker uses exists in PostTypeChecker. Add missing ones.
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*
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* The return value for the visit function of a checker is ignored, all nodes
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* will always be visited.
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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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struct Checker: public ASTConstVisitor
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{
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Checker(langutil::ErrorReporter& _errorReporter):
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m_errorReporter(_errorReporter) {}
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/// Called after all source units have been visited.
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virtual void finalize() {}
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protected:
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langutil::ErrorReporter& m_errorReporter;
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};
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/// @param _errorReporter provides the error logging functionality.
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PostTypeChecker(langutil::ErrorReporter& _errorReporter);
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bool check(ASTNode const& _astRoot);
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/// Called after all source units have been visited.
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bool finalize();
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private:
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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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void endVisit(ErrorDefinition const& _error) override;
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bool visit(EmitStatement const& _emit) override;
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void endVisit(EmitStatement const& _emit) override;
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bool visit(RevertStatement const& _revert) override;
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void endVisit(RevertStatement const& _revert) override;
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bool visit(FunctionCall const& _functionCall) override;
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bool visit(Identifier const& _identifier) override;
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bool visit(MemberAccess const& _identifier) override;
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bool visit(StructDefinition const& _struct) override;
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void endVisit(StructDefinition const& _struct) override;
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bool visit(ModifierInvocation const& _modifierInvocation) override;
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void endVisit(ModifierInvocation const& _modifierInvocation) override;
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template <class T>
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bool callVisit(T const& _node)
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{
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for (auto& checker: m_checkers)
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checker->visit(_node);
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return true;
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}
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template <class T>
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void callEndVisit(T const& _node)
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{
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for (auto& checker: m_checkers)
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checker->endVisit(_node);
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}
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langutil::ErrorReporter& m_errorReporter;
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std::vector<std::shared_ptr<Checker>> m_checkers;
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};
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}
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