2014-10-13 15:13:48 +00:00
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/*
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2019-02-13 15:56:46 +00:00
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This file is part of solidity.
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2014-10-13 15:13:48 +00:00
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2019-02-13 15:56:46 +00:00
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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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2014-10-13 15:13:48 +00:00
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2019-02-13 15:56:46 +00:00
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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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2014-10-13 15:13:48 +00:00
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2019-02-13 15:56:46 +00:00
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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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2014-10-13 15:13:48 +00:00
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*/
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2020-07-17 14:54:12 +00:00
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// SPDX-License-Identifier: GPL-3.0
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2014-10-13 15:13:48 +00:00
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/**
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* @author Christian <c@ethdev.com>
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* @date 2014
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* AST visitor base class.
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*/
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2014-10-10 14:37:54 +00:00
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#pragma once
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2018-12-17 14:33:15 +00:00
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#include <libsolidity/ast/AST.h>
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2015-05-06 08:43:59 +00:00
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#include <functional>
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#include <string>
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#include <vector>
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#include <utility>
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2019-12-11 16:31:36 +00:00
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namespace solidity::frontend
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{
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2014-10-28 15:57:20 +00:00
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/**
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* Visitor interface for the abstract syntax tree. This class is tightly bound to the
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* implementation of @ref ASTNode::accept and its overrides. After a call to
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* @ref ASTNode::accept, the function visit for the appropriate parameter is called and then
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* (if it returns true) this continues recursively for all child nodes in document order
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* (there is an exception for contracts). After all child nodes have been visited, endVisit is
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* called for the node.
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*/
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class ASTVisitor
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{
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public:
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ASTVisitor() = default;
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ASTVisitor(ASTVisitor const&) = delete;
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ASTVisitor(ASTVisitor&&) = delete;
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ASTVisitor& operator=(ASTVisitor const&) = delete;
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ASTVisitor& operator=(ASTVisitor&&) = delete;
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2018-05-02 11:29:16 +00:00
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virtual ~ASTVisitor() = default;
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virtual bool visit(SourceUnit& _node) { return visitNode(_node); }
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virtual bool visit(PragmaDirective& _node) { return visitNode(_node); }
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virtual bool visit(ImportDirective& _node) { return visitNode(_node); }
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virtual bool visit(ContractDefinition& _node) { return visitNode(_node); }
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virtual bool visit(IdentifierPath& _node) { return visitNode(_node); }
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virtual bool visit(InheritanceSpecifier& _node) { return visitNode(_node); }
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virtual bool visit(UsingForDirective& _node) { return visitNode(_node); }
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virtual bool visit(UserDefinedValueTypeDefinition& _node) { return visitNode(_node); }
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virtual bool visit(StructDefinition& _node) { return visitNode(_node); }
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virtual bool visit(EnumDefinition& _node) { return visitNode(_node); }
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virtual bool visit(EnumValue& _node) { return visitNode(_node); }
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virtual bool visit(ParameterList& _node) { return visitNode(_node); }
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virtual bool visit(OverrideSpecifier& _node) { return visitNode(_node); }
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virtual bool visit(FunctionDefinition& _node) { return visitNode(_node); }
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virtual bool visit(VariableDeclaration& _node) { return visitNode(_node); }
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virtual bool visit(ModifierDefinition& _node) { return visitNode(_node); }
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virtual bool visit(ModifierInvocation& _node) { return visitNode(_node); }
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virtual bool visit(EventDefinition& _node) { return visitNode(_node); }
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virtual bool visit(ErrorDefinition& _node) { return visitNode(_node); }
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virtual bool visit(ElementaryTypeName& _node) { return visitNode(_node); }
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virtual bool visit(UserDefinedTypeName& _node) { return visitNode(_node); }
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virtual bool visit(FunctionTypeName& _node) { return visitNode(_node); }
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virtual bool visit(Mapping& _node) { return visitNode(_node); }
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virtual bool visit(ArrayTypeName& _node) { return visitNode(_node); }
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virtual bool visit(InlineAssembly& _node) { return visitNode(_node); }
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virtual bool visit(Block& _node) { return visitNode(_node); }
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virtual bool visit(PlaceholderStatement& _node) { return visitNode(_node); }
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virtual bool visit(IfStatement& _node) { return visitNode(_node); }
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virtual bool visit(TryCatchClause& _node) { return visitNode(_node); }
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virtual bool visit(TryStatement& _node) { return visitNode(_node); }
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virtual bool visit(WhileStatement& _node) { return visitNode(_node); }
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virtual bool visit(ForStatement& _node) { return visitNode(_node); }
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virtual bool visit(Continue& _node) { return visitNode(_node); }
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virtual bool visit(Break& _node) { return visitNode(_node); }
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virtual bool visit(Return& _node) { return visitNode(_node); }
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virtual bool visit(Throw& _node) { return visitNode(_node); }
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virtual bool visit(EmitStatement& _node) { return visitNode(_node); }
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virtual bool visit(RevertStatement& _node) { return visitNode(_node); }
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virtual bool visit(VariableDeclarationStatement& _node) { return visitNode(_node); }
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virtual bool visit(ExpressionStatement& _node) { return visitNode(_node); }
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2015-12-22 16:47:00 +00:00
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virtual bool visit(Conditional& _node) { return visitNode(_node); }
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virtual bool visit(Assignment& _node) { return visitNode(_node); }
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2015-10-12 21:02:35 +00:00
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virtual bool visit(TupleExpression& _node) { return visitNode(_node); }
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virtual bool visit(UnaryOperation& _node) { return visitNode(_node); }
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virtual bool visit(BinaryOperation& _node) { return visitNode(_node); }
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virtual bool visit(FunctionCall& _node) { return visitNode(_node); }
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virtual bool visit(FunctionCallOptions& _node) { return visitNode(_node); }
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virtual bool visit(NewExpression& _node) { return visitNode(_node); }
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virtual bool visit(MemberAccess& _node) { return visitNode(_node); }
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virtual bool visit(IndexAccess& _node) { return visitNode(_node); }
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virtual bool visit(IndexRangeAccess& _node) { return visitNode(_node); }
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virtual bool visit(Identifier& _node) { return visitNode(_node); }
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virtual bool visit(ElementaryTypeNameExpression& _node) { return visitNode(_node); }
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virtual bool visit(Literal& _node) { return visitNode(_node); }
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virtual bool visit(StructuredDocumentation& _node) { return visitNode(_node); }
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2014-10-10 14:37:54 +00:00
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virtual void endVisit(SourceUnit& _node) { endVisitNode(_node); }
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virtual void endVisit(PragmaDirective& _node) { endVisitNode(_node); }
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virtual void endVisit(ImportDirective& _node) { endVisitNode(_node); }
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virtual void endVisit(ContractDefinition& _node) { endVisitNode(_node); }
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virtual void endVisit(IdentifierPath& _node) { endVisitNode(_node); }
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virtual void endVisit(InheritanceSpecifier& _node) { endVisitNode(_node); }
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virtual void endVisit(UsingForDirective& _node) { endVisitNode(_node); }
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virtual void endVisit(UserDefinedValueTypeDefinition& _node) { endVisitNode(_node); }
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virtual void endVisit(StructDefinition& _node) { endVisitNode(_node); }
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virtual void endVisit(EnumDefinition& _node) { endVisitNode(_node); }
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virtual void endVisit(EnumValue& _node) { endVisitNode(_node); }
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virtual void endVisit(ParameterList& _node) { endVisitNode(_node); }
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virtual void endVisit(OverrideSpecifier& _node) { endVisitNode(_node); }
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virtual void endVisit(FunctionDefinition& _node) { endVisitNode(_node); }
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virtual void endVisit(VariableDeclaration& _node) { endVisitNode(_node); }
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virtual void endVisit(ModifierDefinition& _node) { endVisitNode(_node); }
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virtual void endVisit(ModifierInvocation& _node) { endVisitNode(_node); }
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virtual void endVisit(EventDefinition& _node) { endVisitNode(_node); }
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virtual void endVisit(ErrorDefinition& _node) { endVisitNode(_node); }
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virtual void endVisit(ElementaryTypeName& _node) { endVisitNode(_node); }
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virtual void endVisit(UserDefinedTypeName& _node) { endVisitNode(_node); }
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virtual void endVisit(FunctionTypeName& _node) { endVisitNode(_node); }
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virtual void endVisit(Mapping& _node) { endVisitNode(_node); }
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virtual void endVisit(ArrayTypeName& _node) { endVisitNode(_node); }
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virtual void endVisit(InlineAssembly& _node) { endVisitNode(_node); }
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virtual void endVisit(Block& _node) { endVisitNode(_node); }
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virtual void endVisit(PlaceholderStatement& _node) { endVisitNode(_node); }
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virtual void endVisit(IfStatement& _node) { endVisitNode(_node); }
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2019-09-02 14:17:02 +00:00
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virtual void endVisit(TryCatchClause& _node) { endVisitNode(_node); }
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virtual void endVisit(TryStatement& _node) { endVisitNode(_node); }
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2015-04-27 16:56:58 +00:00
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virtual void endVisit(WhileStatement& _node) { endVisitNode(_node); }
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virtual void endVisit(ForStatement& _node) { endVisitNode(_node); }
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virtual void endVisit(Continue& _node) { endVisitNode(_node); }
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virtual void endVisit(Break& _node) { endVisitNode(_node); }
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virtual void endVisit(Return& _node) { endVisitNode(_node); }
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virtual void endVisit(Throw& _node) { endVisitNode(_node); }
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2018-02-16 15:55:21 +00:00
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virtual void endVisit(EmitStatement& _node) { endVisitNode(_node); }
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virtual void endVisit(RevertStatement& _node) { endVisitNode(_node); }
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virtual void endVisit(VariableDeclarationStatement& _node) { endVisitNode(_node); }
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virtual void endVisit(ExpressionStatement& _node) { endVisitNode(_node); }
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virtual void endVisit(Conditional& _node) { endVisitNode(_node); }
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virtual void endVisit(Assignment& _node) { endVisitNode(_node); }
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virtual void endVisit(TupleExpression& _node) { endVisitNode(_node); }
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virtual void endVisit(UnaryOperation& _node) { endVisitNode(_node); }
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virtual void endVisit(BinaryOperation& _node) { endVisitNode(_node); }
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virtual void endVisit(FunctionCall& _node) { endVisitNode(_node); }
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virtual void endVisit(FunctionCallOptions& _node) { endVisitNode(_node); }
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virtual void endVisit(NewExpression& _node) { endVisitNode(_node); }
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virtual void endVisit(MemberAccess& _node) { endVisitNode(_node); }
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virtual void endVisit(IndexAccess& _node) { endVisitNode(_node); }
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virtual void endVisit(IndexRangeAccess& _node) { endVisitNode(_node); }
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virtual void endVisit(Identifier& _node) { endVisitNode(_node); }
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virtual void endVisit(ElementaryTypeNameExpression& _node) { endVisitNode(_node); }
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virtual void endVisit(Literal& _node) { endVisitNode(_node); }
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virtual void endVisit(StructuredDocumentation& _node) { endVisitNode(_node); }
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protected:
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/// Generic function called by default for each node, to be overridden by derived classes
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/// if behaviour unspecific to a node type is desired.
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virtual bool visitNode(ASTNode&) { return true; }
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/// Generic function called by default for each node, to be overridden by derived classes
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/// if behaviour unspecific to a node type is desired.
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virtual void endVisitNode(ASTNode&) { }
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2014-12-06 01:19:10 +00:00
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};
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class ASTConstVisitor
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{
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public:
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2020-04-04 03:47:10 +00:00
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ASTConstVisitor() = default;
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ASTConstVisitor(ASTConstVisitor const&) = delete;
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ASTConstVisitor(ASTConstVisitor&&) = delete;
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ASTConstVisitor& operator=(ASTConstVisitor const&) = delete;
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ASTConstVisitor& operator=(ASTConstVisitor&&) = delete;
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2018-05-02 11:29:16 +00:00
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virtual ~ASTConstVisitor() = default;
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2020-04-04 03:47:10 +00:00
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2015-04-27 16:56:58 +00:00
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virtual bool visit(SourceUnit const& _node) { return visitNode(_node); }
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2016-08-19 17:57:21 +00:00
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virtual bool visit(PragmaDirective const& _node) { return visitNode(_node); }
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2015-04-27 16:56:58 +00:00
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virtual bool visit(ImportDirective const& _node) { return visitNode(_node); }
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virtual bool visit(ContractDefinition const& _node) { return visitNode(_node); }
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2020-08-31 15:37:03 +00:00
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virtual bool visit(IdentifierPath const& _node) { return visitNode(_node); }
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2015-04-27 16:56:58 +00:00
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virtual bool visit(InheritanceSpecifier const& _node) { return visitNode(_node); }
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virtual bool visit(StructDefinition const& _node) { return visitNode(_node); }
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2015-11-22 19:39:10 +00:00
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virtual bool visit(UsingForDirective const& _node) { return visitNode(_node); }
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2021-07-28 08:32:59 +00:00
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virtual bool visit(UserDefinedValueTypeDefinition const& _node) { return visitNode(_node); }
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2015-04-27 16:56:58 +00:00
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virtual bool visit(EnumDefinition const& _node) { return visitNode(_node); }
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virtual bool visit(EnumValue const& _node) { return visitNode(_node); }
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virtual bool visit(ParameterList const& _node) { return visitNode(_node); }
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2019-08-13 11:00:46 +00:00
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virtual bool visit(OverrideSpecifier const& _node) { return visitNode(_node); }
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2015-04-27 16:56:58 +00:00
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virtual bool visit(FunctionDefinition const& _node) { return visitNode(_node); }
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virtual bool visit(VariableDeclaration const& _node) { return visitNode(_node); }
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virtual bool visit(ModifierDefinition const& _node) { return visitNode(_node); }
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virtual bool visit(ModifierInvocation const& _node) { return visitNode(_node); }
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virtual bool visit(EventDefinition const& _node) { return visitNode(_node); }
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2021-01-28 11:56:22 +00:00
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virtual bool visit(ErrorDefinition const& _node) { return visitNode(_node); }
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2015-04-27 16:56:58 +00:00
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virtual bool visit(ElementaryTypeName const& _node) { return visitNode(_node); }
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virtual bool visit(UserDefinedTypeName const& _node) { return visitNode(_node); }
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2016-09-27 19:37:32 +00:00
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virtual bool visit(FunctionTypeName const& _node) { return visitNode(_node); }
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2015-04-27 16:56:58 +00:00
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virtual bool visit(Mapping const& _node) { return visitNode(_node); }
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virtual bool visit(ArrayTypeName const& _node) { return visitNode(_node); }
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virtual bool visit(Block const& _node) { return visitNode(_node); }
|
|
|
|
|
virtual bool visit(PlaceholderStatement const& _node) { return visitNode(_node); }
|
|
|
|
|
virtual bool visit(IfStatement const& _node) { return visitNode(_node); }
|
2019-09-02 14:17:02 +00:00
|
|
|
virtual bool visit(TryCatchClause const& _node) { return visitNode(_node); }
|
|
|
|
|
virtual bool visit(TryStatement const& _node) { return visitNode(_node); }
|
2015-04-27 16:56:58 +00:00
|
|
|
virtual bool visit(WhileStatement const& _node) { return visitNode(_node); }
|
|
|
|
|
virtual bool visit(ForStatement const& _node) { return visitNode(_node); }
|
|
|
|
|
virtual bool visit(Continue const& _node) { return visitNode(_node); }
|
2016-02-22 01:13:41 +00:00
|
|
|
virtual bool visit(InlineAssembly const& _node) { return visitNode(_node); }
|
2015-04-27 16:56:58 +00:00
|
|
|
virtual bool visit(Break const& _node) { return visitNode(_node); }
|
|
|
|
|
virtual bool visit(Return const& _node) { return visitNode(_node); }
|
2015-09-15 14:33:14 +00:00
|
|
|
virtual bool visit(Throw const& _node) { return visitNode(_node); }
|
2018-02-16 15:55:21 +00:00
|
|
|
virtual bool visit(EmitStatement const& _node) { return visitNode(_node); }
|
2021-02-24 09:55:49 +00:00
|
|
|
virtual bool visit(RevertStatement const& _node) { return visitNode(_node); }
|
2015-04-27 16:56:58 +00:00
|
|
|
virtual bool visit(VariableDeclarationStatement const& _node) { return visitNode(_node); }
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virtual bool visit(ExpressionStatement const& _node) { return visitNode(_node); }
|
2015-12-22 16:47:00 +00:00
|
|
|
virtual bool visit(Conditional const& _node) { return visitNode(_node); }
|
2015-04-27 16:56:58 +00:00
|
|
|
virtual bool visit(Assignment const& _node) { return visitNode(_node); }
|
2015-10-12 21:02:35 +00:00
|
|
|
virtual bool visit(TupleExpression const& _node) { return visitNode(_node); }
|
2015-04-27 16:56:58 +00:00
|
|
|
virtual bool visit(UnaryOperation const& _node) { return visitNode(_node); }
|
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virtual bool visit(BinaryOperation const& _node) { return visitNode(_node); }
|
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virtual bool visit(FunctionCall const& _node) { return visitNode(_node); }
|
2020-01-22 14:42:50 +00:00
|
|
|
virtual bool visit(FunctionCallOptions const& _node) { return visitNode(_node); }
|
2015-04-27 16:56:58 +00:00
|
|
|
virtual bool visit(NewExpression const& _node) { return visitNode(_node); }
|
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|
|
virtual bool visit(MemberAccess const& _node) { return visitNode(_node); }
|
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|
|
|
virtual bool visit(IndexAccess const& _node) { return visitNode(_node); }
|
2019-09-03 16:30:00 +00:00
|
|
|
virtual bool visit(IndexRangeAccess const& _node) { return visitNode(_node); }
|
2015-04-27 16:56:58 +00:00
|
|
|
virtual bool visit(Identifier const& _node) { return visitNode(_node); }
|
|
|
|
|
virtual bool visit(ElementaryTypeNameExpression const& _node) { return visitNode(_node); }
|
|
|
|
|
virtual bool visit(Literal const& _node) { return visitNode(_node); }
|
2020-01-29 22:13:42 +00:00
|
|
|
virtual bool visit(StructuredDocumentation const& _node) { return visitNode(_node); }
|
2015-04-27 16:56:58 +00:00
|
|
|
|
|
|
|
|
virtual void endVisit(SourceUnit const& _node) { endVisitNode(_node); }
|
2016-08-19 17:57:21 +00:00
|
|
|
virtual void endVisit(PragmaDirective const& _node) { endVisitNode(_node); }
|
2015-04-27 16:56:58 +00:00
|
|
|
virtual void endVisit(ImportDirective const& _node) { endVisitNode(_node); }
|
|
|
|
|
virtual void endVisit(ContractDefinition const& _node) { endVisitNode(_node); }
|
2020-08-31 15:37:03 +00:00
|
|
|
virtual void endVisit(IdentifierPath const& _node) { endVisitNode(_node); }
|
2015-04-27 16:56:58 +00:00
|
|
|
virtual void endVisit(InheritanceSpecifier const& _node) { endVisitNode(_node); }
|
2015-11-22 19:39:10 +00:00
|
|
|
virtual void endVisit(UsingForDirective const& _node) { endVisitNode(_node); }
|
2021-07-28 08:32:59 +00:00
|
|
|
virtual void endVisit(UserDefinedValueTypeDefinition const& _node) { endVisitNode(_node); }
|
2015-04-27 16:56:58 +00:00
|
|
|
virtual void endVisit(StructDefinition const& _node) { endVisitNode(_node); }
|
|
|
|
|
virtual void endVisit(EnumDefinition const& _node) { endVisitNode(_node); }
|
|
|
|
|
virtual void endVisit(EnumValue const& _node) { endVisitNode(_node); }
|
|
|
|
|
virtual void endVisit(ParameterList const& _node) { endVisitNode(_node); }
|
2019-08-13 11:00:46 +00:00
|
|
|
virtual void endVisit(OverrideSpecifier const& _node) { endVisitNode(_node); }
|
2015-04-27 16:56:58 +00:00
|
|
|
virtual void endVisit(FunctionDefinition const& _node) { endVisitNode(_node); }
|
|
|
|
|
virtual void endVisit(VariableDeclaration const& _node) { endVisitNode(_node); }
|
|
|
|
|
virtual void endVisit(ModifierDefinition const& _node) { endVisitNode(_node); }
|
|
|
|
|
virtual void endVisit(ModifierInvocation const& _node) { endVisitNode(_node); }
|
|
|
|
|
virtual void endVisit(EventDefinition const& _node) { endVisitNode(_node); }
|
2021-01-28 11:56:22 +00:00
|
|
|
virtual void endVisit(ErrorDefinition const& _node) { endVisitNode(_node); }
|
2015-04-27 16:56:58 +00:00
|
|
|
virtual void endVisit(ElementaryTypeName const& _node) { endVisitNode(_node); }
|
|
|
|
|
virtual void endVisit(UserDefinedTypeName const& _node) { endVisitNode(_node); }
|
2016-09-27 19:37:32 +00:00
|
|
|
virtual void endVisit(FunctionTypeName const& _node) { endVisitNode(_node); }
|
2015-04-27 16:56:58 +00:00
|
|
|
virtual void endVisit(Mapping const& _node) { endVisitNode(_node); }
|
|
|
|
|
virtual void endVisit(ArrayTypeName const& _node) { endVisitNode(_node); }
|
|
|
|
|
virtual void endVisit(Block const& _node) { endVisitNode(_node); }
|
|
|
|
|
virtual void endVisit(PlaceholderStatement const& _node) { endVisitNode(_node); }
|
|
|
|
|
virtual void endVisit(IfStatement const& _node) { endVisitNode(_node); }
|
2019-09-02 14:17:02 +00:00
|
|
|
virtual void endVisit(TryCatchClause const& _node) { endVisitNode(_node); }
|
|
|
|
|
virtual void endVisit(TryStatement const& _node) { endVisitNode(_node); }
|
2015-04-27 16:56:58 +00:00
|
|
|
virtual void endVisit(WhileStatement const& _node) { endVisitNode(_node); }
|
|
|
|
|
virtual void endVisit(ForStatement const& _node) { endVisitNode(_node); }
|
|
|
|
|
virtual void endVisit(Continue const& _node) { endVisitNode(_node); }
|
2016-02-22 01:13:41 +00:00
|
|
|
virtual void endVisit(InlineAssembly const& _node) { endVisitNode(_node); }
|
2015-04-27 16:56:58 +00:00
|
|
|
virtual void endVisit(Break const& _node) { endVisitNode(_node); }
|
|
|
|
|
virtual void endVisit(Return const& _node) { endVisitNode(_node); }
|
2015-09-15 14:33:14 +00:00
|
|
|
virtual void endVisit(Throw const& _node) { endVisitNode(_node); }
|
2018-02-16 15:55:21 +00:00
|
|
|
virtual void endVisit(EmitStatement const& _node) { endVisitNode(_node); }
|
2021-02-24 09:55:49 +00:00
|
|
|
virtual void endVisit(RevertStatement const& _node) { endVisitNode(_node); }
|
2015-04-27 16:56:58 +00:00
|
|
|
virtual void endVisit(VariableDeclarationStatement const& _node) { endVisitNode(_node); }
|
|
|
|
|
virtual void endVisit(ExpressionStatement const& _node) { endVisitNode(_node); }
|
2015-12-22 16:47:00 +00:00
|
|
|
virtual void endVisit(Conditional const& _node) { endVisitNode(_node); }
|
2015-04-27 16:56:58 +00:00
|
|
|
virtual void endVisit(Assignment const& _node) { endVisitNode(_node); }
|
2015-10-12 21:02:35 +00:00
|
|
|
virtual void endVisit(TupleExpression const& _node) { endVisitNode(_node); }
|
2015-04-27 16:56:58 +00:00
|
|
|
virtual void endVisit(UnaryOperation const& _node) { endVisitNode(_node); }
|
|
|
|
|
virtual void endVisit(BinaryOperation const& _node) { endVisitNode(_node); }
|
|
|
|
|
virtual void endVisit(FunctionCall const& _node) { endVisitNode(_node); }
|
2020-01-22 14:42:50 +00:00
|
|
|
virtual void endVisit(FunctionCallOptions const& _node) { endVisitNode(_node); }
|
2015-04-27 16:56:58 +00:00
|
|
|
virtual void endVisit(NewExpression const& _node) { endVisitNode(_node); }
|
|
|
|
|
virtual void endVisit(MemberAccess const& _node) { endVisitNode(_node); }
|
|
|
|
|
virtual void endVisit(IndexAccess const& _node) { endVisitNode(_node); }
|
2019-09-03 16:30:00 +00:00
|
|
|
virtual void endVisit(IndexRangeAccess const& _node) { endVisitNode(_node); }
|
2015-04-27 16:56:58 +00:00
|
|
|
virtual void endVisit(Identifier const& _node) { endVisitNode(_node); }
|
|
|
|
|
virtual void endVisit(ElementaryTypeNameExpression const& _node) { endVisitNode(_node); }
|
|
|
|
|
virtual void endVisit(Literal const& _node) { endVisitNode(_node); }
|
2020-01-29 22:13:42 +00:00
|
|
|
virtual void endVisit(StructuredDocumentation const& _node) { endVisitNode(_node); }
|
2014-12-05 16:29:20 +00:00
|
|
|
|
2015-04-27 16:56:58 +00:00
|
|
|
protected:
|
|
|
|
|
/// Generic function called by default for each node, to be overridden by derived classes
|
|
|
|
|
/// if behaviour unspecific to a node type is desired.
|
|
|
|
|
virtual bool visitNode(ASTNode const&) { return true; }
|
|
|
|
|
/// Generic function called by default for each node, to be overridden by derived classes
|
|
|
|
|
/// if behaviour unspecific to a node type is desired.
|
|
|
|
|
virtual void endVisitNode(ASTNode const&) { }
|
2014-10-10 14:37:54 +00:00
|
|
|
};
|
|
|
|
|
|
2015-05-19 22:27:07 +00:00
|
|
|
/**
|
|
|
|
|
* Utility class that accepts std::functions and calls them for visitNode and endVisitNode.
|
|
|
|
|
*/
|
|
|
|
|
class SimpleASTVisitor: public ASTConstVisitor
|
|
|
|
|
{
|
|
|
|
|
public:
|
|
|
|
|
SimpleASTVisitor(
|
|
|
|
|
std::function<bool(ASTNode const&)> _onVisit,
|
|
|
|
|
std::function<void(ASTNode const&)> _onEndVisit
|
2020-04-01 03:04:29 +00:00
|
|
|
): m_onVisit(std::move(_onVisit)), m_onEndVisit(std::move(_onEndVisit)) {}
|
2015-05-19 22:27:07 +00:00
|
|
|
|
|
|
|
|
protected:
|
2018-11-16 01:09:04 +00:00
|
|
|
bool visitNode(ASTNode const& _n) override { return m_onVisit ? m_onVisit(_n) : true; }
|
|
|
|
|
void endVisitNode(ASTNode const& _n) override { m_onEndVisit(_n); }
|
2015-05-19 22:27:07 +00:00
|
|
|
|
|
|
|
|
private:
|
|
|
|
|
std::function<bool(ASTNode const&)> m_onVisit;
|
|
|
|
|
std::function<void(ASTNode const&)> m_onEndVisit;
|
|
|
|
|
};
|
|
|
|
|
|
2014-10-16 12:08:54 +00:00
|
|
|
}
|
