/*******************************************************************************
* Copyright (c) 2005, 2011 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 Rational Software) - Initial API and implementation
* Markus Schorn (Wind River Systems)
* Yuan Zhang / Beth Tibbitts (IBM Research)
* Bryan Wilkinson (QNX)
*******************************************************************************/
package org.eclipse.cdt.internal.core.dom.parser.c;
import org.eclipse.cdt.core.dom.ILinkage;
import org.eclipse.cdt.core.dom.ast.ASTVisitor;
import org.eclipse.cdt.core.dom.ast.IASTCompletionContext;
import org.eclipse.cdt.core.dom.ast.IASTElaboratedTypeSpecifier;
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.parser.util.ArrayUtil;
import org.eclipse.cdt.internal.core.dom.Linkage;
import org.eclipse.cdt.internal.core.dom.parser.ASTNode;
import org.eclipse.cdt.internal.core.dom.parser.IASTInternalNameOwner;
/**
* Implementation for names in C translation units.
*/
public class CASTName extends ASTNode implements IASTName, IASTCompletionContext {
private final char[] name;
private static final char[] EMPTY_CHAR_ARRAY = {};
private static final String EMPTY_STRING = ""; //$NON-NLS-1$
private IBinding binding = null;
public CASTName(char[] name) {
this.name = name;
}
public CASTName() {
name = EMPTY_CHAR_ARRAY;
}
public CASTName copy() {
return copy(CopyStyle.withoutLocations);
}
public CASTName copy(CopyStyle style) {
CASTName copy = new CASTName(name == null ? null : name.clone());
copy.setOffsetAndLength(this);
if (style == CopyStyle.withLocations) {
copy.setCopyLocation(this);
}
return copy;
}
public IBinding resolveBinding() {
if (binding == null) {
CVisitor.createBinding(this);
}
return binding;
}
public IBinding resolvePreBinding() {
return resolveBinding();
}
public IBinding getBinding() {
return binding;
}
public IBinding getPreBinding() {
return binding;
}
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 void setBinding(IBinding binding) {
this.binding = binding;
}
@Override
public String toString() {
if (name == EMPTY_CHAR_ARRAY)
return EMPTY_STRING;
return new String(name);
}
public char[] toCharArray() {
return name;
}
public char[] getSimpleID() {
return name;
}
public char[] getLookupKey() {
return name;
}
@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;
}
}
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);
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;
}
public ILinkage getLinkage() {
return Linkage.C_LINKAGE;
}
public IBinding[] findBindings(IASTName n, boolean isPrefix) {
IASTNode parent = getParent();
if (parent instanceof IASTElaboratedTypeSpecifier) {
IASTElaboratedTypeSpecifier specifier = (IASTElaboratedTypeSpecifier) parent;
int kind = specifier.getKind();
switch (kind) {
case IASTElaboratedTypeSpecifier.k_struct:
case IASTElaboratedTypeSpecifier.k_union:
break;
default:
return null;
}
IBinding[] bindings = CVisitor.findBindingsForContentAssist(n, isPrefix);
return filterByElaboratedTypeSpecifier(kind, bindings);
}
return null;
}
private IBinding[] filterByElaboratedTypeSpecifier(int kind, IBinding[] bindings) {
for (int i = 0; i < bindings.length; i++) {
if (bindings[i] instanceof ICompositeType) {
ICompositeType type = (ICompositeType) bindings[i];
switch (type.getKey()) {
case ICompositeType.k_struct:
if (kind != IASTElaboratedTypeSpecifier.k_struct) {
bindings[i] = null;
}
break;
case ICompositeType.k_union:
if (kind != IASTElaboratedTypeSpecifier.k_union) {
bindings[i] = null;
}
break;
}
} else {
bindings[i]= null;
}
}
return (IBinding[])ArrayUtil.removeNulls(IBinding.class, bindings);
}
public IASTName getLastName() {
return this;
}
}