java/java-impl/src/com/intellij/refactoring/psi/PackageNameUtil.java

/*
 * Copyright 2000-2009 JetBrains s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.intellij.refactoring.psi;

import com.intellij.psi.PsiNameHelper;

import java.util.StringTokenizer;

public class PackageNameUtil {
    private PackageNameUtil() {
    }

    public static boolean containsNonIdentifier(PsiNameHelper nameHelper, String packageName) {

        final StringTokenizer tokenizer = new StringTokenizer(packageName, ".");
        while(tokenizer.hasMoreTokens())
        {
            final String component = tokenizer.nextToken();
            if (!nameHelper.isIdentifier(component)) {
                return true;
            }
        }
        return false;
    }
}