mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
118 lines
3.6 KiB
C++
118 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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/**
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* @author Christian <c@ethdev.com>
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* @date 2014
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* Scope - object that holds declaration of names.
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*/
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#include <libsolidity/analysis/DeclarationContainer.h>
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#include <libsolidity/ast/AST.h>
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#include <libsolidity/ast/Types.h>
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using namespace std;
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using namespace dev;
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using namespace dev::solidity;
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Declaration const* DeclarationContainer::conflictingDeclaration(
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Declaration const& _declaration,
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ASTString const* _name
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) const
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{
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if (!_name)
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_name = &_declaration.name();
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solAssert(!_name->empty(), "");
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vector<Declaration const*> declarations;
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if (m_declarations.count(*_name))
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declarations += m_declarations.at(*_name);
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if (m_invisibleDeclarations.count(*_name))
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declarations += m_invisibleDeclarations.at(*_name);
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if (
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dynamic_cast<FunctionDefinition const*>(&_declaration) ||
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dynamic_cast<EventDefinition const*>(&_declaration)
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)
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{
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// check that all other declarations with the same name are functions or a public state variable or events.
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// And then check that the signatures are different.
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for (Declaration const* declaration: declarations)
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{
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if (auto variableDeclaration = dynamic_cast<VariableDeclaration const*>(declaration))
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{
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if (variableDeclaration->isStateVariable() && !variableDeclaration->isConstant() && variableDeclaration->isPublic())
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continue;
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return declaration;
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}
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if (
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dynamic_cast<FunctionDefinition const*>(&_declaration) &&
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!dynamic_cast<FunctionDefinition const*>(declaration)
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)
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return declaration;
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if (
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dynamic_cast<EventDefinition const*>(&_declaration) &&
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!dynamic_cast<EventDefinition const*>(declaration)
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)
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return declaration;
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// Or, continue.
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}
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}
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else if (declarations.size() == 1 && declarations.front() == &_declaration)
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return nullptr;
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else if (!declarations.empty())
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return declarations.front();
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return nullptr;
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}
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bool DeclarationContainer::registerDeclaration(
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Declaration const& _declaration,
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ASTString const* _name,
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bool _invisible,
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bool _update
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)
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{
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if (!_name)
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_name = &_declaration.name();
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if (_name->empty())
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return true;
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if (_update)
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{
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solAssert(!dynamic_cast<FunctionDefinition const*>(&_declaration), "Attempt to update function definition.");
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m_declarations.erase(*_name);
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m_invisibleDeclarations.erase(*_name);
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}
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else if (conflictingDeclaration(_declaration, _name))
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return false;
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vector<Declaration const*>& decls = _invisible ? m_invisibleDeclarations[*_name] : m_declarations[*_name];
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if (!contains(decls, &_declaration))
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decls.push_back(&_declaration);
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return true;
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}
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std::vector<Declaration const*> DeclarationContainer::resolveName(ASTString const& _name, bool _recursive) const
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{
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solAssert(!_name.empty(), "Attempt to resolve empty name.");
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auto result = m_declarations.find(_name);
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if (result != m_declarations.end())
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return result->second;
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if (_recursive && m_enclosingContainer)
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return m_enclosingContainer->resolveName(_name, true);
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return vector<Declaration const*>({});
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}
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