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The source code
/*
* Sun Public License Notice
*
* The contents of this file are subject to the Sun Public License
* Version 1.0 (the "License"). You may not use this file except in
* compliance with the License. A copy of the License is available at
* http://www.sun.com/
*
* The Original Code is NetBeans. The Initial Developer of the Original
* Code is Sun Microsystems, Inc. Portions Copyright 1997-2004 Sun
* Microsystems, Inc. All Rights Reserved.
*/
package org.netbeans.modules.javacore.jmiimpl.javamodel;
import java.util.ArrayList;
import org.netbeans.jmi.javamodel.Element;
import org.netbeans.jmi.javamodel.Expression;
import org.netbeans.jmi.javamodel.ForStatement;
import org.netbeans.jmi.javamodel.Statement;
import org.netbeans.lib.java.parser.ASTree;
import org.netbeans.lib.java.parser.ASTreeTypes;
import org.netbeans.mdr.storagemodel.StorableObject;
import org.netbeans.modules.javacore.parser.ASTProvider;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
/**
* Instances of element represent for loop in java source. They contain
* several attributes:
*
* for (init; condition; steps)
* body;
*
* Init, condition, steps and body represent children of this object. The
* expressions are available by calling getInit(), getExpression() from
* superclass and getSteps(). Getters can return null. Body is represented by
* Statement or by StatementBlock instance.
*
* @see ForEachStatementImpl
*
* @author Martin Matula
*/
public abstract class ForStatementImpl extends ConditionImpl implements ForStatement {
private Statement body = null;
private LightAttrList steps = null;
private LightAttrList init = null;
/** Creates a new instance of ForStatementImpl */
public ForStatementImpl(StorableObject o) {
super(o);
}
public List getSteps() {
if (!childrenInited) {
initChildren();
}
return steps;
}
public List getInit() {
if (!childrenInited) {
initChildren();
}
return init;
}
public void setBody(Statement body) {
objectChanged(CHANGED_BODY);
changeChild(getBody(), body);
this.body = body;
}
protected void initChildren() {
childrenInited = false;
ASTree tree = getASTree();
if (tree != null) {
ASTree[] parts = tree.getSubTrees();
init = createChildrenList(init, "init", parts[0], ASTreeTypes.STATEMENT_EXPRESSION_LIST, CHANGED_INIT, false); // NOI18N
expression = (Expression) initOrCreate(expression, parts[1]);
steps = createChildrenList(steps, "steps", parts[2], ASTreeTypes.STATEMENT_EXPRESSION_LIST, CHANGED_STEPS, false); // NOI18N
body = (Statement) initOrCreate(body, parts[3]);
}
childrenInited = true;
}
public Statement getBody() {
if (!childrenInited) {
initChildren();
}
return body;
}
public String getSourceText() {
String origElem;
if ((origElem = checkChange()) != null)
return origElem;
StringBuffer buf = new StringBuffer();
StatementImpl cond = (StatementImpl)getExpression();
StatementImpl body = (StatementImpl) getBody();
List init = getInit();
List steps = getSteps();
buf.append('\n');
formatElementPart(FOR_KEYWORD, buf);
formatElementPart(STMT_OPEN_BRACKET, buf);
Iterator iter = init.iterator();
while (iter.hasNext()) {
StatementImpl expr = (StatementImpl) iter.next();
buf.append(expr.getSourceText());
if (iter.hasNext())
formatElementPart(MetadataElement.COMMA, buf);
}
formatElementPart(FOR_SEMICOLON, buf);
if (cond != null) {
buf.append(cond.getSourceText());
}
formatElementPart(FOR_SEMICOLON, buf);
iter = getSteps().iterator();
while (iter.hasNext()) {
StatementImpl expr = (StatementImpl) iter.next();
buf.append(expr.getSourceText());
if (iter.hasNext()) {
formatElementPart(MetadataElement.COMMA, buf);
}
}
formatElementPart(STMT_CLOSE_BRACKET, buf);
buf.append(body.getSourceText());
return buf.toString();
}
public void getDiff(List diff) {
ASTProvider parser = getParser();
ASTree tree = getASTree();
ASTree[] children = tree.getSubTrees();
int endTokens[] = new int[3];
for (int i = 3; i > 0; i--) {
if (children[i] == null) {
endTokens[i - 1] = endTokens[i] - 1;
} else {
endTokens[i - 1] = children[i].getFirstToken() - 1;
}
}
getCollectionDiff(diff, parser, CHANGED_INIT, children[0], ASTreeTypes.STATEMENT_EXPRESSION_LIST, getInit(), parser.getToken(endTokens[0]).getStartOffset(), formatElementPart(MetadataElement.COMMA));
getChildDiff(diff, parser, children[1], (MetadataElement) getExpression(), CHANGED_EXPRESSION, parser.getToken(endTokens[1]).getStartOffset(), "");
getCollectionDiff(diff, parser, CHANGED_STEPS, children[2], ASTreeTypes.STATEMENT_EXPRESSION_LIST, getSteps(), parser.getToken(endTokens[2]).getStartOffset(), formatElementPart(MetadataElement.COMMA));
getChildDiff(diff, parser, children[3], (MetadataElement) getBody(), CHANGED_BODY);
}
void setData(Expression expression, List steps, Statement body, List init) {
// expression
changeChild(null, expression);
this.expression = expression;
// steps
this.steps = createChildrenList("steps", steps, CHANGED_STEPS); // NOI18N
// body
changeChild(null, body);
this.body = body;
// init
this.init = createChildrenList("init", init, CHANGED_INIT); // NOI18N
}
protected void _delete() {
// --- delete components -------------------------------------------
if (childrenInited) {
deleteChildren(steps);
deleteChild(body);
deleteChildren(init);
}
// --- delete links -----------------------------------------------
// no links to delete
// --- call super ---------------------------------------
super._delete();
}
public void replaceChild(Element oldElement,Element newElement) {
if (childrenInited) {
if (oldElement.equals(body)) {
setBody((Statement)newElement);
} else if (replaceObject(getInit(),oldElement,newElement))
;
else if (replaceObject(getSteps(),oldElement,newElement))
;
else
super.replaceChild(oldElement,newElement);
}
}
public List getChildren() {
List list = new ArrayList(4);
list.addAll(getInit());
list.addAll(super.getChildren());
list.addAll(getSteps());
addIfNotNull(list, getBody());
return list;
}
}
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