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/*******************************************************************************
* Copyright (c) 2006, 2009 QNX Software Systems and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Doug Schaefer (QNX) - Initial API and implementation
* Markus Schorn (Wind River Systems)
* IBM Corporation
*******************************************************************************/
package org.eclipse.cdt.internal.core.pdom.dom;
import org.eclipse.cdt.core.CCorePlugin;
import org.eclipse.cdt.core.dom.ast.ASTTypeUtil;
import org.eclipse.cdt.core.dom.ast.DOMException;
import org.eclipse.cdt.core.dom.ast.IPointerType;
import org.eclipse.cdt.core.dom.ast.IType;
import org.eclipse.cdt.core.dom.ast.ITypedef;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPPointerToMemberType;
import org.eclipse.cdt.internal.core.Util;
import org.eclipse.cdt.internal.core.dom.parser.ITypeContainer;
import org.eclipse.cdt.internal.core.index.IIndexBindingConstants;
import org.eclipse.cdt.internal.core.index.IIndexType;
import org.eclipse.cdt.internal.core.index.PointerTypeClone;
import org.eclipse.cdt.internal.core.pdom.db.Database;
import org.eclipse.core.runtime.CoreException;
/**
* Pointer types for c and c++.
*/
public class PDOMPointerType extends PDOMNode implements IPointerType,
ITypeContainer, IIndexType {
private static final int FLAGS = PDOMNode.RECORD_SIZE + 0; // byte
private static final int TYPE = PDOMNode.RECORD_SIZE + 1;
@SuppressWarnings("hiding")
protected static final int RECORD_SIZE = PDOMNode.RECORD_SIZE + 5;
private static final int CONST = 0x1;
private static final int VOLATILE = 0x2;
// cached values
private byte flags= -1;
private IType targetType;
public PDOMPointerType(PDOMLinkage linkage, int record) {
super(linkage, record);
}
public PDOMPointerType(PDOMLinkage linkage, PDOMNode parent, IPointerType type) throws CoreException {
super(linkage, parent);
Database db = getDB();
try {
// type
int typeRec = 0;
byte flags = 0;
if (type != null) {
IType targetType= type.getType();
PDOMNode targetTypeNode = getLinkage().addType(this, targetType);
if (targetTypeNode != null)
typeRec = targetTypeNode.getRecord();
if (type.isConst())
flags |= CONST;
if (type.isVolatile())
flags |= VOLATILE;
}
db.putInt(record + TYPE, typeRec);
db.putByte(record + FLAGS, flags);
} catch (DOMException e) {
throw new CoreException(Util.createStatus(e));
}
}
@Override
protected int getRecordSize() {
return RECORD_SIZE;
}
@Override
public int getNodeType() {
return IIndexBindingConstants.POINTER_TYPE;
}
private byte getFlags() throws CoreException {
if (flags == -1) {
flags= getDB().getByte(record + FLAGS);
}
return flags;
}
public IType getType() {
if (targetType == null)
targetType= readType();
return targetType;
}
private IType readType() {
try {
PDOMNode node = getLinkage().getNode(getDB().getInt(record + TYPE));
return node instanceof IType ? (IType)node : null;
} catch (CoreException e) {
CCorePlugin.log(e);
return null;
}
}
public boolean isConst() {
try {
return (getFlags() & CONST) != 0;
} catch (CoreException e) {
CCorePlugin.log(e);
return false;
}
}
public boolean isVolatile() {
try {
return (getFlags() & VOLATILE) != 0;
} catch (CoreException e) {
CCorePlugin.log(e);
return false;
}
}
public boolean isSameType(IType type) {
if( type instanceof ITypedef )
return ((ITypedef)type).isSameType( this );
if (!(type instanceof IPointerType))
return false;
if (this instanceof ICPPPointerToMemberType != type instanceof ICPPPointerToMemberType)
return false;
IPointerType rhs = (IPointerType) type;
try {
if (isConst() == rhs.isConst() && isVolatile() == rhs.isVolatile()) {
IType type1= getType();
if (type1 != null) {
return type1.isSameType(rhs.getType());
}
}
} catch (DOMException e) {
}
return false;
}
public void setType(IType type) {
throw new PDOMNotImplementedError();
}
@Override
public Object clone() {
return new PointerTypeClone(this);
}
@Override
public void delete(PDOMLinkage linkage) throws CoreException {
linkage.deleteType(getType(), record);
super.delete(linkage);
}
@Override
public String toString() {
return ASTTypeUtil.getType(this);
}
}
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