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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/>.
*/
/**
* @author Christian <c@ethdev.com>
* @date 2014
* Component that resolves type names to types and annotates the AST accordingly.
*/
#pragma once
#include <libsolidity/ast/ASTVisitor.h>
#include <libsolidity/ast/ASTAnnotations.h>
#include <boost/noncopyable.hpp>
#include <list>
#include <map>
namespace langutil
{
class ErrorReporter;
struct SourceLocation;
}
namespace dev
{
namespace solidity
{
class NameAndTypeResolver;
/**
* Resolves references to declarations (of variables and types) and also establishes the link
* between a return statement and the return parameter list.
*/
class ReferencesResolver: private ASTConstVisitor
{
public:
ReferencesResolver(
langutil::ErrorReporter& _errorReporter,
NameAndTypeResolver& _resolver,
bool _resolveInsideCode = false
):
m_errorReporter(_errorReporter),
m_resolver(_resolver),
m_resolveInsideCode(_resolveInsideCode)
{}
/// @returns true if no errors during resolving and throws exceptions on fatal errors.
bool resolve(ASTNode const& _root);
private:
bool visit(Block const& _block) override;
void endVisit(Block const& _block) override;
bool visit(ForStatement const& _for) override;
void endVisit(ForStatement const& _for) override;
void endVisit(VariableDeclarationStatement const& _varDeclStatement) override;
bool visit(Identifier const& _identifier) override;
bool visit(ElementaryTypeName const& _typeName) override;
bool visit(FunctionDefinition const& _functionDefinition) override;
void endVisit(FunctionDefinition const& _functionDefinition) override;
bool visit(ModifierDefinition const& _modifierDefinition) override;
void endVisit(ModifierDefinition const& _modifierDefinition) override;
void endVisit(UserDefinedTypeName const& _typeName) override;
void endVisit(FunctionTypeName const& _typeName) override;
void endVisit(Mapping const& _typeName) override;
void endVisit(ArrayTypeName const& _typeName) override;
bool visit(InlineAssembly const& _inlineAssembly) override;
bool visit(Return const& _return) override;
void endVisit(VariableDeclaration const& _variable) override;
/// Adds a new error to the list of errors.
void typeError(langutil::SourceLocation const& _location, std::string const& _description);
/// Adds a new error to the list of errors and throws to abort reference resolving.
void fatalTypeError(langutil::SourceLocation const& _location, std::string const& _description);
/// Adds a new error to the list of errors.
void declarationError(langutil::SourceLocation const& _location, std::string const& _description);
/// Adds a new error to the list of errors and throws to abort reference resolving.
void fatalDeclarationError(langutil::SourceLocation const& _location, std::string const& _description);
langutil::ErrorReporter& m_errorReporter;
NameAndTypeResolver& m_resolver;
/// Stack of return parameters.
std::vector<ParameterList const*> m_returnParameters;
bool const m_resolveInsideCode;
bool m_errorOccurred = false;
};
}
}
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