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/*-
* ============LICENSE_START=======================================================
* ONAP - SO
* ================================================================================
* Copyright (C) 2017 - 2018 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.onap.so.asdc.utils;
import java.util.Arrays;
import org.antlr.v4.runtime.Parser;
import org.antlr.v4.runtime.tree.ParseTree;
import org.antlr.v4.runtime.tree.ParseTreeWalker;
public class TreeUtils {
/**
* Print the tree, splitting at appropriate points, instead of rendering a single long line.
* @param parseTree
* @param parser
* @return
*/
public static String printTree(final ParseTree parseTree, final Parser parser){
final TreePrinterListener listener = new TreePrinterListener(Arrays.asList(parser.getRuleNames()));
ParseTreeWalker.DEFAULT.walk(listener, parseTree);
return listener.toString();
}
public static String normalizeWhiteSpace(String input){
return input.replaceAll("\\s+", " ").replaceAll("([^\\w])\\s+", "$1");
}
}
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