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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)
*******************************************************************************/
package org.eclipse.cdt.internal.core.pdom.dom.cpp;
import org.eclipse.cdt.core.dom.ast.IASTNode;
import org.eclipse.cdt.core.dom.ast.IBinding;
import org.eclipse.cdt.core.dom.ast.IProblemBinding;
import org.eclipse.cdt.core.dom.ast.IType;
import org.eclipse.cdt.core.dom.ast.ITypedef;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPClassSpecialization;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPClassTemplate;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPClassTemplatePartialSpecialization;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPClassType;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPTemplateArgument;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPTemplateDefinition;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPTemplateInstance;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPTemplateNonTypeParameter;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPTemplateParameter;
import org.eclipse.cdt.core.parser.util.CharArrayUtils;
import org.eclipse.cdt.internal.core.dom.parser.cpp.ICPPDeferredClassInstance;
import org.eclipse.cdt.internal.core.dom.parser.cpp.ICPPInstanceCache;
import org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.CPPTemplates;
import org.eclipse.cdt.internal.core.index.IIndexCPPBindingConstants;
import org.eclipse.cdt.internal.core.pdom.dom.PDOMBinding;
import org.eclipse.cdt.internal.core.pdom.dom.PDOMLinkage;
import org.eclipse.cdt.internal.core.pdom.dom.PDOMNode;
import org.eclipse.core.runtime.CoreException;
/**
* Specialization of a class template.
*/
class PDOMCPPClassTemplateSpecialization extends PDOMCPPClassSpecialization
implements ICPPClassTemplate, ICPPInstanceCache {
@SuppressWarnings("hiding")
protected static final int RECORD_SIZE = PDOMCPPClassSpecialization.RECORD_SIZE;
public PDOMCPPClassTemplateSpecialization(PDOMLinkage linkage, PDOMNode parent, ICPPClassTemplate template, PDOMBinding specialized)
throws CoreException {
super(linkage, parent, template, specialized);
}
public PDOMCPPClassTemplateSpecialization(PDOMLinkage linkage, long bindingRecord) {
super(linkage, bindingRecord);
}
@Override
protected int getRecordSize() {
return RECORD_SIZE;
}
@Override
public int getNodeType() {
return IIndexCPPBindingConstants.CPP_CLASS_TEMPLATE_SPECIALIZATION;
}
@Override
public ICPPTemplateParameter[] getTemplateParameters() {
ICPPClassTemplate template = (ICPPClassTemplate) getSpecializedBinding();
return template.getTemplateParameters();
}
@Override
public ICPPTemplateInstance getInstance(ICPPTemplateArgument[] arguments) {
return PDOMInstanceCache.getCache(this).getInstance(arguments);
}
@Override
public void addInstance(ICPPTemplateArgument[] arguments, ICPPTemplateInstance instance) {
PDOMInstanceCache.getCache(this).addInstance(arguments, instance);
}
@Override
public ICPPTemplateInstance[] getAllInstances() {
return PDOMInstanceCache.getCache(this).getAllInstances();
}
@Override
public boolean isSameType(IType type) {
if( type == this )
return true;
if( type instanceof ITypedef )
return type.isSameType( this );
if (type instanceof PDOMNode) {
PDOMNode node= (PDOMNode) type;
if (node.getPDOM() == getPDOM()) {
return node.getRecord() == getRecord();
}
}
// require a class template specialization
if (type instanceof ICPPClassSpecialization == false ||
type instanceof ICPPTemplateDefinition == false || type instanceof IProblemBinding)
return false;
final ICPPClassSpecialization classSpec2 = (ICPPClassSpecialization) type;
if (getKey() != classSpec2.getKey())
return false;
if (!CharArrayUtils.equals(getNameCharArray(), classSpec2.getNameCharArray()))
return false;
ICPPTemplateParameter[] params1= getTemplateParameters();
ICPPTemplateParameter[] params2= ((ICPPClassTemplate) type).getTemplateParameters();
if (params1 == params2)
return true;
if (params1 == null || params2 == null)
return false;
if (params1.length != params2.length)
return false;
for (int i = 0; i < params1.length; i++) {
ICPPTemplateParameter p1= params1[i];
ICPPTemplateParameter p2= params2[i];
if (p1 instanceof IType && p2 instanceof IType) {
IType t1= (IType) p1;
IType t2= (IType) p2;
if (!t1.isSameType(t2)) {
return false;
}
} else if (p1 instanceof ICPPTemplateNonTypeParameter
&& p2 instanceof ICPPTemplateNonTypeParameter) {
IType t1= ((ICPPTemplateNonTypeParameter)p1).getType();
IType t2= ((ICPPTemplateNonTypeParameter)p2).getType();
if (t1 != t2) {
if (t1 == null || t2 == null || !t1.isSameType(t2)) {
return false;
}
}
} else {
return false;
}
}
final IBinding owner1= getOwner();
final IBinding owner2= classSpec2.getOwner();
// for a specialization that is not an instance the owner has to be a class-type
if (owner1 instanceof ICPPClassType == false || owner2 instanceof ICPPClassType == false)
return false;
return ((ICPPClassType) owner1).isSameType((ICPPClassType) owner2);
}
@Override
public ICPPClassTemplatePartialSpecialization[] getPartialSpecializations() {
IASTNode point= null; // Instantiation of dependent expressions may not work.
ICPPClassTemplate origTemplate= (ICPPClassTemplate) getSpecializedBinding();
ICPPClassTemplatePartialSpecialization[] orig = origTemplate.getPartialSpecializations();
ICPPClassTemplatePartialSpecialization[] spec = new ICPPClassTemplatePartialSpecialization[orig.length];
ICPPClassSpecialization owner = (ICPPClassSpecialization) getOwner();
for (int i = 0; i < orig.length; i++) {
spec[i]= (ICPPClassTemplatePartialSpecialization) owner.specializeMember(orig[i], point);
}
return spec;
}
@Override
public final ICPPDeferredClassInstance asDeferredInstance() {
PDOMInstanceCache cache= PDOMInstanceCache.getCache(this);
synchronized (cache) {
ICPPDeferredClassInstance dci= cache.getDeferredInstance();
if (dci == null) {
dci= CPPTemplates.createDeferredInstance(this);
cache.putDeferredInstance(dci);
}
return dci;
}
}
}
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