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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** Commercial Usage
**
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** GNU Lesser General Public License Usage
**
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://www.qtsoftware.com/contact.
**
**************************************************************************/
// Copyright (c) 2008 Roberto Raggi <roberto.raggi@gmail.com>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
#ifndef CPLUSPLUS_SCOPE_H
#define CPLUSPLUS_SCOPE_H
#include "CPlusPlusForwardDeclarations.h"
CPLUSPLUS_BEGIN_HEADER
CPLUSPLUS_BEGIN_NAMESPACE
class CPLUSPLUS_EXPORT Use
{
public:
inline Name *name() const
{ return _name; }
inline unsigned sourceOffset() const
{ return _sourceOffset; }
inline Symbol *lastVisibleSymbol() const
{ return _lastVisibleSymbol; }
private:
void init(unsigned sourceOffset, Name *name, Symbol *lastVisibleSymbol)
{
_sourceOffset = sourceOffset;
_name = name;
_lastVisibleSymbol = lastVisibleSymbol;
}
unsigned _sourceOffset;
Name *_name;
Symbol *_lastVisibleSymbol;
friend class Scope;
};
class CPLUSPLUS_EXPORT Scope
{
Scope(const Scope &other);
void operator =(const Scope &other);
public:
typedef Symbol **iterator;
public:
/// Constructs an empty Scope.
Scope(ScopedSymbol *owner = 0);
/// Destroy this scope.
~Scope();
/// Returns this scope's owner Symbol.
ScopedSymbol *owner() const;
/// Sets this scope's owner Symbol.
void setOwner(ScopedSymbol *owner); // ### remove me
/// Returns the enclosing scope.
Scope *enclosingScope() const;
/// Returns the eclosing namespace scope.
Scope *enclosingNamespaceScope() const;
/// Returns the enclosing class scope.
Scope *enclosingClassScope() const;
/// Returns the enclosing enum scope.
Scope *enclosingEnumScope() const;
/// Rerturns the enclosing function scope.
Scope *enclosingFunctionScope() const;
/// Rerturns the enclosing Block scope.
Scope *enclosingBlockScope() const;
/// Returns true if this scope's owner is a Namespace Symbol.
bool isNamespaceScope() const;
/// Returns true if this scope's owner is a Class Symbol.
bool isClassScope() const;
/// Returns true if this scope's owner is an Enum Symbol.
bool isEnumScope() const;
/// Returns true if this scope's owner is a Block Symbol.
bool isBlockScope() const;
/// Returns true if this scope's owner is a Function Symbol.
bool isFunctionScope() const;
/// Returns true if this scope's owner is a Prototype Symbol.
bool isPrototypeScope() const;
/// Adds a Symbol to this Scope.
void enterSymbol(Symbol *symbol);
/// Returns true if this Scope is empty; otherwise returns false.
bool isEmpty() const;
/// Returns the number of symbols is in the scope.
unsigned symbolCount() const;
/// Returns the Symbol at the given position.
Symbol *symbolAt(unsigned index) const;
/// Returns the first Symbol in the scope.
iterator firstSymbol() const;
/// Returns the last Symbol in the scope.
iterator lastSymbol() const;
Symbol *lookat(Identifier *id) const;
Symbol *lookat(int operatorId) const;
unsigned useCount() const;
Use *useAt(unsigned index) const;
void addUse(unsigned sourceOffset, Name *name);
private:
/// Returns the hash value for the given Symbol.
unsigned hashValue(Symbol *symbol) const;
/// Updates the hash table.
void rehash();
private:
enum { DefaultInitialSize = 11 };
ScopedSymbol *_owner;
Symbol **_symbols;
int _allocatedSymbols;
int _symbolCount;
Symbol **_hash;
int _hashSize;
Use *_uses;
int _allocatedUses;
int _useCount;
};
CPLUSPLUS_END_NAMESPACE
CPLUSPLUS_END_HEADER
#endif // CPLUSPLUS_SCOPE_H
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