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/*******************************************************************************
* Copyright (c) 2007, 2011 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:
* Bryan Wilkinson (QNX) - Initial API and implementation
* Markus Schorn (Wind River Systems)
* Sergey Prigogin (Google)
*******************************************************************************/
package org.eclipse.cdt.internal.core.pdom.dom.cpp;
import org.eclipse.cdt.core.CCorePlugin;
import org.eclipse.cdt.core.dom.IPDOMVisitor;
import org.eclipse.cdt.core.dom.ast.DOMException;
import org.eclipse.cdt.core.dom.ast.IASTName;
import org.eclipse.cdt.core.dom.ast.IBinding;
import org.eclipse.cdt.core.dom.ast.IType;
import org.eclipse.cdt.core.dom.ast.ITypedef;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPScope;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPTemplateArgument;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPTemplateParameter;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPTemplateTypeParameter;
import org.eclipse.cdt.internal.core.dom.parser.cpp.CPPASTName;
import org.eclipse.cdt.internal.core.dom.parser.cpp.CPPTemplateTypeArgument;
import org.eclipse.cdt.internal.core.dom.parser.cpp.ICPPUnknownBinding;
import org.eclipse.cdt.internal.core.dom.parser.cpp.ICPPUnknownType;
import org.eclipse.cdt.internal.core.index.IIndexCPPBindingConstants;
import org.eclipse.cdt.internal.core.index.IIndexType;
import org.eclipse.cdt.internal.core.pdom.db.Database;
import org.eclipse.cdt.internal.core.pdom.db.PDOMNodeLinkedList;
import org.eclipse.cdt.internal.core.pdom.dom.IPDOMMemberOwner;
import org.eclipse.cdt.internal.core.pdom.dom.PDOMLinkage;
import org.eclipse.cdt.internal.core.pdom.dom.PDOMNode;
import org.eclipse.core.runtime.CoreException;
/**
* Binding for template type parameters in the index.
*/
class PDOMCPPTemplateTypeParameter extends PDOMCPPBinding implements IPDOMMemberOwner,
ICPPTemplateTypeParameter, ICPPUnknownBinding, ICPPUnknownType, IIndexType,
IPDOMCPPTemplateParameter {
private static final int PACK_BIT = 1 << 31;
private static final int DEFAULT_TYPE = PDOMCPPBinding.RECORD_SIZE;
private static final int MEMBERLIST = DEFAULT_TYPE + Database.TYPE_SIZE;
private static final int PARAMETERID= MEMBERLIST + Database.PTR_SIZE;
@SuppressWarnings("hiding")
protected static final int RECORD_SIZE = PARAMETERID + 4;
private PDOMCPPUnknownScope fUnknownScope; // No need for volatile, PDOMCPPUnknownScope protects its fields.
private int fCachedParamID= -1;
public PDOMCPPTemplateTypeParameter(PDOMLinkage linkage, PDOMNode parent, ICPPTemplateTypeParameter param)
throws CoreException {
super(linkage, parent, param.getNameCharArray());
final Database db = getDB();
int id= param.getParameterID();
if (param.isParameterPack()) {
id |= PACK_BIT;
}
db.putInt(record + PARAMETERID, id);
}
public PDOMCPPTemplateTypeParameter(PDOMLinkage linkage, long bindingRecord) {
super(linkage, bindingRecord);
}
@Override
protected int getRecordSize() {
return RECORD_SIZE;
}
@Override
public int getNodeType() {
return IIndexCPPBindingConstants.CPP_TEMPLATE_TYPE_PARAMETER;
}
@Override
public short getParameterPosition() {
return (short) getParameterID();
}
@Override
public short getTemplateNestingLevel() {
readParamID();
return (short)(getParameterID() >> 16);
}
@Override
public boolean isParameterPack() {
readParamID();
return (fCachedParamID & PACK_BIT) != 0;
}
@Override
public int getParameterID() {
readParamID();
return fCachedParamID & ~PACK_BIT;
}
private void readParamID() {
if (fCachedParamID == -1) {
try {
final Database db = getDB();
fCachedParamID= db.getInt(record + PARAMETERID);
} catch (CoreException e) {
CCorePlugin.log(e);
fCachedParamID= Integer.MAX_VALUE;
}
}
}
@Override
public void addChild(PDOMNode member) throws CoreException {
PDOMNodeLinkedList list = new PDOMNodeLinkedList(getLinkage(), record + MEMBERLIST);
list.addMember(member);
}
@Override
public void accept(IPDOMVisitor visitor) throws CoreException {
PDOMNodeLinkedList list = new PDOMNodeLinkedList(getLinkage(), record + MEMBERLIST);
list.accept(visitor);
}
@Override
public boolean isSameType(IType type) {
if (type instanceof ITypedef) {
return type.isSameType(this);
}
if (!(type instanceof ICPPTemplateTypeParameter))
return false;
return getParameterID() == ((ICPPTemplateParameter) type).getParameterID();
}
@Override
public IType getDefault() {
try {
return getLinkage().loadType(record + DEFAULT_TYPE);
} catch (CoreException e) {
CCorePlugin.log(e);
}
return null;
}
@Override
public ICPPTemplateArgument getDefaultValue() {
IType d= getDefault();
if (d == null)
return null;
return new CPPTemplateTypeArgument(d);
}
@Override
public Object clone() {
throw new UnsupportedOperationException();
}
@Override
public ICPPScope asScope() {
if (fUnknownScope == null) {
fUnknownScope= new PDOMCPPUnknownScope(this, new CPPASTName(getNameCharArray()));
}
return fUnknownScope;
}
@Override
public IASTName getUnknownName() {
return new CPPASTName(getNameCharArray());
}
@Override
public void configure(ICPPTemplateParameter param) {
try {
ICPPTemplateArgument val= param.getDefaultValue();
if (val != null) {
IType dflt= val.getTypeValue();
if (dflt != null) {
getLinkage().storeType(record + DEFAULT_TYPE, dflt);
}
}
} catch (CoreException e) {
CCorePlugin.log(e);
}
}
@Override
public void update(PDOMLinkage linkage, IBinding newBinding) throws CoreException {
if (newBinding instanceof ICPPTemplateTypeParameter) {
ICPPTemplateTypeParameter ttp= (ICPPTemplateTypeParameter) newBinding;
updateName(newBinding.getNameCharArray());
IType newDefault= null;
try {
newDefault = ttp.getDefault();
} catch (DOMException e) {
// ignore
}
if (newDefault != null) {
getLinkage().storeType(record + DEFAULT_TYPE, newDefault);
}
}
}
@Override
public void forceDelete(PDOMLinkage linkage) throws CoreException {
getDBName().delete();
getLinkage().storeType(record + DEFAULT_TYPE, null);
}
}
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