mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
113 lines
3.8 KiB
C++
113 lines
3.8 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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/**
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* @author Christian <c@ethdev.com>
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* @date 2014
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* Component that resolves type names to types and annotates the AST accordingly.
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*/
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#pragma once
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#include <libsolidity/ast/ASTVisitor.h>
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#include <libsolidity/ast/ASTAnnotations.h>
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#include <liblangutil/EVMVersion.h>
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#include <libyul/optimiser/ASTWalker.h>
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#include <boost/noncopyable.hpp>
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#include <list>
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#include <map>
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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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class NameAndTypeResolver;
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/**
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* Resolves references to declarations (of variables and types) and also establishes the link
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* between a return statement and the return parameter list.
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*/
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class ReferencesResolver: private ASTConstVisitor, private yul::ASTWalker
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{
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public:
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ReferencesResolver(
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langutil::ErrorReporter& _errorReporter,
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NameAndTypeResolver& _resolver,
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langutil::EVMVersion _evmVersion,
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bool _resolveInsideCode = false
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):
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m_errorReporter(_errorReporter),
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m_resolver(_resolver),
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m_evmVersion(_evmVersion),
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m_resolveInsideCode(_resolveInsideCode)
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{}
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/// @returns true if no errors during resolving and throws exceptions on fatal errors.
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bool resolve(ASTNode const& _root);
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private:
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using yul::ASTWalker::visit;
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using yul::ASTWalker::operator();
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bool visit(Block const& _block) override;
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void endVisit(Block const& _block) override;
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bool visit(TryCatchClause const& _tryCatchClause) override;
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void endVisit(TryCatchClause const& _tryCatchClause) override;
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bool visit(ForStatement const& _for) override;
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void endVisit(ForStatement const& _for) override;
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void endVisit(VariableDeclarationStatement const& _varDeclStatement) override;
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bool visit(Identifier const& _identifier) override;
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bool visit(FunctionDefinition const& _functionDefinition) override;
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void endVisit(FunctionDefinition const& _functionDefinition) override;
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bool visit(ModifierDefinition const& _modifierDefinition) override;
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void endVisit(ModifierDefinition const& _modifierDefinition) override;
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void endVisit(UserDefinedTypeName const& _typeName) override;
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bool visit(InlineAssembly const& _inlineAssembly) override;
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bool visit(Return const& _return) override;
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void operator()(yul::FunctionDefinition const& _function) override;
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void operator()(yul::Identifier const& _identifier) override;
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void operator()(yul::VariableDeclaration const& _varDecl) override;
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/// Adds a new error to the list of errors.
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void declarationError(langutil::SourceLocation const& _location, std::string const& _description);
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/// Adds a new error to the list of errors.
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void declarationError(langutil::SourceLocation const& _location, langutil::SecondarySourceLocation const& _ssl, std::string const& _description);
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/// Adds a new error to the list of errors and throws to abort reference resolving.
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void fatalDeclarationError(langutil::SourceLocation const& _location, std::string const& _description);
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langutil::ErrorReporter& m_errorReporter;
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NameAndTypeResolver& m_resolver;
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langutil::EVMVersion m_evmVersion;
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/// Stack of return parameters.
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std::vector<ParameterList const*> m_returnParameters;
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bool const m_resolveInsideCode;
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bool m_errorOccurred = false;
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InlineAssemblyAnnotation* m_yulAnnotation = nullptr;
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bool m_yulInsideFunction = false;
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};
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}
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