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/*******************************************************************************
* Copyright (c) 2004, 2007 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:
* IBM - Initial API and implementation
* Markus Schorn (Wind River Systems)
* Bryan Wilkinson (QNX)
* Anton Leherbauer (Wind River Systems)
*******************************************************************************/
package org.eclipse.cdt.internal.core.dom.parser.cpp;
import org.eclipse.cdt.core.CCorePlugin;
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.IASTDeclarator;
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.IBinding;
import org.eclipse.cdt.core.dom.ast.ICompositeType;
import org.eclipse.cdt.core.dom.ast.IProblemBinding;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTElaboratedTypeSpecifier;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPClassType;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPNamespace;
import org.eclipse.cdt.core.parser.util.ArrayUtil;
import org.eclipse.cdt.core.parser.util.CharArrayUtils;
import org.eclipse.cdt.internal.core.dom.parser.ProblemBinding;
/**
* @author jcamelon
*/
public class CPPASTName extends CPPASTNode implements IASTName, IASTCompletionContext {
final static class RecursionResolvingBinding extends ProblemBinding {
public RecursionResolvingBinding() {
super(null, IProblemBinding.SEMANTIC_RECURSION_IN_LOOKUP, CharArrayUtils.EMPTY);
}
public RecursionResolvingBinding(IASTName node) {
super(node, IProblemBinding.SEMANTIC_RECURSION_IN_LOOKUP, node.toCharArray());
}
}
private char[] name;
private static final char[] EMPTY_CHAR_ARRAY = {};
private static final String EMPTY_STRING = ""; //$NON-NLS-1$
static final int MAX_RESOLUTION_DEPTH = 5;
private IBinding binding = null;
private int fResolutionDepth= 0;
public CPPASTName(char[] name) {
this.name = name;
}
public CPPASTName() {
name = EMPTY_CHAR_ARRAY;
}
public IBinding resolveBinding() {
if (binding == null) {
if (++fResolutionDepth > MAX_RESOLUTION_DEPTH) {
binding= new RecursionResolvingBinding(this);
}
else {
binding = CPPVisitor.createBinding(this);
}
}
return binding;
}
public void incResolutionDepth() {
if (binding == null && ++fResolutionDepth > MAX_RESOLUTION_DEPTH) {
binding= new RecursionResolvingBinding(this);
}
}
public IASTCompletionContext getCompletionContext() {
IASTNode node = getParent();
while (node != null) {
if (node instanceof IASTCompletionContext) {
return (IASTCompletionContext) node;
}
node = node.getParent();
}
if (getLength() > 0) {
return this;
}
return null;
}
public IBinding[] findBindings(IASTName n, boolean isPrefix) {
IASTNode parent = getParent();
if (parent instanceof ICPPASTElaboratedTypeSpecifier) {
ICPPASTElaboratedTypeSpecifier specifier = (ICPPASTElaboratedTypeSpecifier) parent;
int kind = specifier.getKind();
switch (kind) {
case ICompositeType.k_struct:
case ICompositeType.k_union:
case ICPPASTElaboratedTypeSpecifier.k_class:
break;
default:
return null;
}
IBinding[] bindings = CPPSemantics.findBindingsForContentAssist(n, isPrefix);
return filterByElaboratedTypeSpecifier(kind, bindings);
}
else if (parent instanceof IASTDeclarator) {
IBinding[] bindings = CPPSemantics.findBindingsForContentAssist(n, isPrefix);
for (int i = 0; i < bindings.length; i++) {
if (bindings[i] instanceof ICPPNamespace || bindings[i] instanceof ICPPClassType) {
} else {
bindings[i] = null;
}
}
return (IBinding[])ArrayUtil.removeNulls(IBinding.class, bindings);
}
return null;
}
private IBinding[] filterByElaboratedTypeSpecifier(int kind, IBinding[] bindings) {
for (int i = 0; i < bindings.length; i++) {
if (bindings[i] instanceof ICPPNamespace) {
} else if (bindings[i] instanceof ICPPClassType) {
ICPPClassType type = (ICPPClassType) bindings[i];
try {
switch (type.getKey()) {
case ICompositeType.k_struct:
if (kind != ICompositeType.k_struct) {
bindings[i] = null;
}
break;
case ICompositeType.k_union:
if (kind != ICompositeType.k_union) {
bindings[i] = null;
}
break;
case ICPPClassType.k_class:
if (kind != ICPPASTElaboratedTypeSpecifier.k_class) {
bindings[i] = null;
}
break;
}
} catch (DOMException e) {
bindings[i] = null;
CCorePlugin.log(e);
}
} else {
bindings[i]= null;
}
}
return (IBinding[])ArrayUtil.removeNulls(IBinding.class, bindings);
}
public void setBinding(IBinding binding) {
this.binding = binding;
fResolutionDepth= 0;
}
public IBinding getBinding() {
return binding;
}
public String toString() {
if (name == EMPTY_CHAR_ARRAY)
return EMPTY_STRING;
return new String(name);
}
public char[] toCharArray() {
return name;
}
public void setName(char[] name) {
this.name = name;
}
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;
}
}
if (action.shouldVisitNames) {
switch (action.leave(this)) {
case ASTVisitor.PROCESS_ABORT:
return false;
case ASTVisitor.PROCESS_SKIP:
return true;
default:
break;
}
}
return true;
}
public boolean isDeclaration() {
IASTNode parent = getParent();
if (parent instanceof IASTNameOwner) {
int role = ((IASTNameOwner) parent).getRoleForName(this);
switch (role) {
case IASTNameOwner.r_reference:
case IASTNameOwner.r_unclear:
return false;
default:
return true;
}
}
return false;
}
public boolean isReference() {
IASTNode parent = getParent();
if (parent instanceof IASTNameOwner) {
int role = ((IASTNameOwner) parent).getRoleForName(this);
switch (role) {
case IASTNameOwner.r_reference:
return true;
default:
return false;
}
}
return false;
}
public boolean isDefinition() {
IASTNode parent = getParent();
if (parent instanceof IASTNameOwner) {
int role = ((IASTNameOwner) parent).getRoleForName(this);
switch (role) {
case IASTNameOwner.r_definition:
return true;
default:
return false;
}
}
return false;
}
}
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