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/*******************************************************************************
* Copyright (c) 2006, 2015 Wind River Systems, Inc. and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Markus Schorn - initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.internal.ui.callhierarchy;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Objects;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.cdt.core.model.ICElement;
import org.eclipse.cdt.core.model.IEnumerator;
import org.eclipse.cdt.core.model.IMacro;
import org.eclipse.cdt.core.model.ITranslationUnit;
import org.eclipse.cdt.core.model.IVariableDeclaration;
/**
* Represents a node in the include browser
*/
public class CHNode implements IAdaptable {
private CHNode fParent;
private ICElement fRepresentedDecl;
private ITranslationUnit fFileOfReferences;
private List<CHReferenceInfo> fReferences;
protected int fHashCode;
private long fTimestamp;
private boolean fIsRecursive;
private boolean fIsInitializer;
private boolean fIsReadAccess;
private boolean fIsWriteAccess;
private final int fLinkageID;
/**
* Creates a new node for the include browser
*/
public CHNode(CHNode parent, ITranslationUnit fileOfReferences, long timestamp, ICElement decl,
int linkageID) {
fParent= parent;
fFileOfReferences= fileOfReferences;
fReferences= Collections.emptyList();
fRepresentedDecl= decl;
fIsRecursive= computeIsRecursive(fParent, decl);
fHashCode= computeHashCode();
fTimestamp= timestamp;
fLinkageID= linkageID;
}
private int computeHashCode() {
int hashCode= 1;
if (fParent != null) {
hashCode= fParent.hashCode() * 31;
}
if (fRepresentedDecl != null) {
hashCode+= fRepresentedDecl.hashCode();
}
return hashCode;
}
@Override
public int hashCode() {
return fHashCode;
}
@Override
public boolean equals(Object o) {
if (!(o instanceof CHNode)) {
return false;
}
CHNode rhs = (CHNode) o;
if (fHashCode != rhs.fHashCode) {
return false;
}
return Objects.equals(fRepresentedDecl, rhs.fRepresentedDecl);
}
private boolean computeIsRecursive(CHNode parent, ICElement decl) {
if (parent == null || decl == null) {
return false;
}
if (decl.equals(parent.fRepresentedDecl)) {
return true;
}
return computeIsRecursive(parent.fParent, decl);
}
/**
* Returns the parent node or <code>null</code> for the root node.
*/
public CHNode getParent() {
return fParent;
}
public int getLinkageID() {
return fLinkageID;
}
public boolean isRecursive() {
return fIsRecursive;
}
public int getReferenceCount() {
return fReferences.size();
}
public CHReferenceInfo getReference(int idx) {
return fReferences.get(idx);
}
public ICElement getRepresentedDeclaration() {
return fRepresentedDecl;
}
public long getTimestamp() {
return fTimestamp;
}
public boolean isMacro() {
return fRepresentedDecl instanceof IMacro;
}
public boolean isVariableOrEnumerator() {
return fRepresentedDecl instanceof IVariableDeclaration ||
fRepresentedDecl instanceof IEnumerator;
}
public int getFirstReferenceOffset() {
return fReferences.isEmpty() ? -1 : getReference(0).getOffset();
}
public void addReference(CHReferenceInfo info) {
switch (fReferences.size()) {
case 0:
fReferences= Collections.singletonList(info);
return;
case 1:
fReferences= new ArrayList<CHReferenceInfo>(fReferences);
break;
}
fReferences.add(info);
}
public ITranslationUnit getFileOfReferences() {
return fFileOfReferences;
}
@Override
@SuppressWarnings({ "unchecked", "rawtypes" })
public Object getAdapter(Class adapter) {
if (adapter.isAssignableFrom(ICElement.class)) {
return getRepresentedDeclaration();
}
return null;
}
public boolean isMultiDef() {
return false;
}
public ICElement getOneRepresentedDeclaration() {
return getRepresentedDeclaration();
}
public boolean isInitializer() {
return fIsInitializer;
}
public void setInitializer(boolean isInitializer) {
fIsInitializer = isInitializer;
}
public void sortReferencesByOffset() {
if (fReferences.size() > 1) {
Collections.sort(fReferences, CHReferenceInfo.COMPARE_OFFSET);
}
}
public void setRWAccess(boolean readAccess, boolean writeAccess) {
fIsReadAccess= readAccess;
fIsWriteAccess= writeAccess;
}
public boolean isReadAccess() {
return fIsReadAccess;
}
public boolean isWriteAccess() {
return fIsWriteAccess;
}
}
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