/*******************************************************************************
* Copyright (c) 2004, 2008 IBM Corporation 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:
* John Camelon (IBM) - Initial API and implementation
* Bryan Wilkinson (QNX)
* Markus Schorn (Wind River Systems)
*******************************************************************************/
package org.eclipse.cdt.internal.core.dom.parser.cpp;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.cdt.core.dom.ILinkage;
import org.eclipse.cdt.core.dom.ast.ASTVisitor;
import org.eclipse.cdt.core.dom.ast.DOMException;
import org.eclipse.cdt.core.dom.ast.IASTCompletionContext;
import org.eclipse.cdt.core.dom.ast.IASTName;
import org.eclipse.cdt.core.dom.ast.IASTNameOwner;
import org.eclipse.cdt.core.dom.ast.IASTNode;
import org.eclipse.cdt.core.dom.ast.IASTSimpleDeclaration;
import org.eclipse.cdt.core.dom.ast.IBinding;
import org.eclipse.cdt.core.dom.ast.IEnumeration;
import org.eclipse.cdt.core.dom.ast.IEnumerator;
import org.eclipse.cdt.core.dom.ast.IField;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTConversionName;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTOperatorName;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTQualifiedName;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTTemplateId;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPClassType;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPConstructor;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPMethod;
import org.eclipse.cdt.core.parser.util.ArrayUtil;
import org.eclipse.cdt.core.parser.util.CharArrayUtils;
import org.eclipse.cdt.internal.core.dom.Linkage;
import org.eclipse.cdt.internal.core.dom.parser.IASTInternalNameOwner;
import org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.CPPSemantics;
import org.eclipse.core.runtime.Assert;
/**
* Qualified name, which can contain any other name (unqualified, operator-name, conversion name,
* template id).
*/
public class CPPASTQualifiedName extends CPPASTNameBase
implements ICPPASTQualifiedName, IASTCompletionContext {
private IASTName[] names = null;
private int namesPos= -1;
private boolean isFullyQualified;
private String signature;
public CPPASTQualifiedName() {
}
@Override
public final IBinding resolvePreBinding() {
// The full qualified name resolves to the same thing as the last name
return resolvePreBinding(getLastName());
}
@Override
public IBinding resolveBinding() {
// The full qualified name resolves to the same thing as the last name
IASTName lastName= getLastName();
return lastName == null ? null : lastName.resolveBinding();
}
@Override
public final IBinding getPreBinding() {
// The full qualified name resolves to the same thing as the last name
return getPreBinding(getLastName());
}
@Override
public IBinding getBinding() {
return getLastName().getBinding();
}
@Override
public void setBinding(IBinding binding) {
getLastName().setBinding(binding);
}
public IASTCompletionContext getCompletionContext() {
IASTNode node = getParent();
while (node != null) {
if (node instanceof IASTCompletionContext) {
return (IASTCompletionContext) node;
}
node = node.getParent();
}
return null;
}
@Override
public String toString() {
return (signature == null) ? "" : signature; //$NON-NLS-1$
}
public void addName(IASTName name) {
assertNotFrozen();
assert !(name instanceof ICPPASTQualifiedName);
if (name != null) {
names = (IASTName[]) ArrayUtil.append(IASTName.class, names, ++namesPos, name);
name.setParent(this);
name.setPropertyInParent(SEGMENT_NAME);
}
}
public IASTName[] getNames() {
if (namesPos < 0)
return IASTName.EMPTY_NAME_ARRAY;
names = (IASTName[]) ArrayUtil.removeNullsAfter(IASTName.class, names, namesPos);
return names;
}
@Override
public IASTName getLastName() {
if (namesPos < 0)
return null;
return names[namesPos];
}
public char[] toCharArray() {
if (namesPos < 0)
return new char[0];
// count first
int len = -2;
for (int i = 0; i <= namesPos; ++i) {
char[] n = names[i].toCharArray();
if (n == null)
return null;
len+= 2;
len+= n.length;
}
char[] nameArray = new char[len];
int pos = 0;
for (int i = 0; i <= namesPos; i++) {
if (i != 0) {
nameArray[pos++] = ':';
nameArray[pos++] = ':';
}
final char[] n = names[i].toCharArray();
System.arraycopy(n, 0, nameArray, pos, n.length);
pos += n.length;
}
return nameArray;
}
public boolean isFullyQualified() {
return isFullyQualified;
}
public void setFullyQualified(boolean isFullyQualified) {
assertNotFrozen();
this.isFullyQualified = isFullyQualified;
}
public void setSignature(String signature) {
assertNotFrozen();
this.signature = signature;
}
@Override
public boolean accept(ASTVisitor action) {
if (action.shouldVisitNames) {
switch (action.visit(this)) {
case ASTVisitor.PROCESS_ABORT:
return false;
case ASTVisitor.PROCESS_SKIP:
return true;
default:
break;
}
}
for (int i = 0; i <= namesPos; i++) {
if (i == namesPos) {
// pointer-to-member qualified names have a dummy name as the last part of the name, don't visit it
if (names[i].toCharArray().length > 0 && !names[i].accept(action))
return false;
} else if (!names[i].accept(action))
return false;
}
if (action.shouldVisitNames) {
switch (action.leave(this)) {
case ASTVisitor.PROCESS_ABORT:
return false;
case ASTVisitor.PROCESS_SKIP:
return true;
default:
break;
}
}
return true;
}
public int getRoleOfName(boolean allowResolution) {
IASTNode parent = getParent();
if (parent instanceof IASTInternalNameOwner) {
return ((IASTInternalNameOwner) parent).getRoleForName(this, allowResolution);
}
if (parent instanceof IASTNameOwner) {
return ((IASTNameOwner) parent).getRoleForName(this);
}
return IASTNameOwner.r_unclear;
}
public boolean isDeclaration() {
IASTNode parent = getParent();
if (parent instanceof IASTNameOwner) {
int role = ((IASTNameOwner) parent).getRoleForName(this);
if (role == IASTNameOwner.r_reference) return false;
return true;
}
return false;
}
public boolean isReference() {
IASTNode parent = getParent();
if (parent instanceof IASTNameOwner) {
int role = ((IASTNameOwner) parent).getRoleForName(this);
if (role == IASTNameOwner.r_reference) return true;
return false;
}
return false;
}
public int getRoleForName(IASTName n) {
for (int i=0; i < namesPos; ++i) {
if (names[i] == n)
return r_reference;
}
if (getLastName() == n) {
IASTNode p = getParent();
if (p instanceof IASTNameOwner) {
return ((IASTNameOwner)p).getRoleForName(this);
}
}
return r_unclear;
}
public boolean isConversionOrOperator() {
final IASTName lastName= getLastName();
if (lastName instanceof ICPPASTConversionName || lastName instanceof ICPPASTOperatorName) {
return true;
}
// check templateId's name
if (lastName instanceof ICPPASTTemplateId) {
IASTName tempName = ((ICPPASTTemplateId)lastName).getTemplateName();
if (tempName instanceof ICPPASTConversionName || tempName instanceof ICPPASTOperatorName) {
return true;
}
}
return false;
}
public boolean isDefinition() {
IASTNode parent = getParent();
if (parent instanceof IASTNameOwner) {
int role = ((IASTNameOwner) parent).getRoleForName(this);
if (role == IASTNameOwner.r_definition) return true;
return false;
}
return false;
}
public IBinding[] findBindings(IASTName n, boolean isPrefix) {
IBinding[] bindings = CPPSemantics.findBindingsForContentAssist(n, isPrefix);
if (namesPos > 0) {
IBinding binding = names[namesPos-1].resolveBinding();
if (binding instanceof ICPPClassType) {
ICPPClassType classType = (ICPPClassType) binding;
final boolean isDeclaration = getParent().getParent() instanceof IASTSimpleDeclaration;
List<IBinding> filtered = filterClassScopeBindings(classType, bindings, isDeclaration);
if (isDeclaration && nameMatches(classType.getNameCharArray(),
n.toCharArray(), isPrefix)) {
try {
ICPPConstructor[] constructors = classType.getConstructors();
for (int i = 0; i < constructors.length; i++) {
if (!constructors[i].isImplicit()) {
filtered.add(constructors[i]);
}
}
} catch (DOMException e) {
}
}
return filtered.toArray(new IBinding[filtered.size()]);
}
}
return bindings;
}
private List<IBinding> filterClassScopeBindings(ICPPClassType classType,
IBinding[] bindings, final boolean isDeclaration) {
List<IBinding> filtered = new ArrayList<IBinding>();
try {
for (int i = 0; i < bindings.length; i++) {
if (bindings[i] instanceof IField) {
IField field = (IField) bindings[i];
if (!field.isStatic()) continue;
} else if (bindings[i] instanceof ICPPMethod) {
ICPPMethod method = (ICPPMethod) bindings[i];
if (method.isImplicit()) continue;
if (method.isDestructor() || method instanceof ICPPConstructor) {
if (!isDeclaration) continue;
} else if (!method.isStatic() && !isDeclaration) {
continue;
}
} else if (bindings[i] instanceof ICPPClassType) {
ICPPClassType type = (ICPPClassType) bindings[i];
if (type.isSameType(classType)) continue;
} else if (!(bindings[i] instanceof IEnumerator || bindings[i] instanceof IEnumeration) || isDeclaration) {
continue;
}
filtered.add(bindings[i]);
}
} catch (DOMException e) {
}
return filtered;
}
private boolean nameMatches(char[] potential, char[] name, boolean isPrefix) {
if (isPrefix)
return CharArrayUtils.equals(potential, 0, name.length, name, true);
return CharArrayUtils.equals(potential, name);
}
/* (non-Javadoc)
* @see org.eclipse.cdt.core.dom.ast.IASTName#getLinkage()
*/
public ILinkage getLinkage() {
return Linkage.CPP_LINKAGE;
}
@Override
protected IBinding createIntermediateBinding() {
Assert.isLegal(false);
return null;
}
}