org.eclipse.jdt.ui/core refactoring/org/eclipse/jdt/core/refactoring/fields/RenameFieldASTAnalyzer.java

/*
 * Licensed Materials - Property of IBM,
 * WebSphere Studio Workbench
 * (c) Copyright IBM Corp 1999, 2000
 */
package org.eclipse.jdt.core.refactoring.fields;
import org.eclipse.jdt.core.IField;
import org.eclipse.jdt.core.JavaModelException;

import org.eclipse.jdt.internal.compiler.ast.AstNode;
import org.eclipse.jdt.internal.compiler.ast.QualifiedNameReference;
import org.eclipse.jdt.internal.compiler.ast.SingleNameReference;
import org.eclipse.jdt.internal.compiler.lookup.BlockScope;
import org.eclipse.jdt.internal.core.refactoring.Assert;
import org.eclipse.jdt.internal.core.refactoring.RefactoringASTAnalyzer;

public class RenameFieldASTAnalyzer extends RefactoringASTAnalyzer {
	
	private String fNewName;
	private char[] fNewNameArray;
	private IField fField;
	
	RenameFieldASTAnalyzer(String newName, IField field) throws JavaModelException {
		Assert.isTrue(field.exists());

		fNewNameArray= newName.toCharArray();
		fNewName= newName;
		fField= field;
	}
	
	// --- visit methods 
	
	public boolean visit(SingleNameReference singleNameReference, BlockScope scope) {
		if (sourceRangeOnList(singleNameReference) && nameDefinedInScope(fNewNameArray, scope))
			addError(singleNameReference);
		return true;
	}

	public boolean visit(QualifiedNameReference qualifiedNameReference, BlockScope scope) {
		if (sourceRangeOnList(qualifiedNameReference) && nameDefinedInScope(fNewNameArray, scope))
			addError(qualifiedNameReference);
		return true;
	}
	
	//-- helper methods 
	
	private void addError(AstNode node){
		addError("Possible problems in \"" + cuFullPath() + "\" (line number: " + getLineNumber(node) + "). Name " + fNewName + " is already used.");
	}
	
	//- type member analysis
	
	/* non java-doc
	 * overriden
	 */ 
	protected boolean checkMemberTypes(){
		return false;
	}
	
}