org.apache.activemq.protobuf.compiler.ParserSupport Maven / Gradle / Ivy
/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.activemq.protobuf.compiler;
import org.apache.activemq.protobuf.compiler.TextFormat.InvalidEscapeSequence;
import org.apache.activemq.protobuf.compiler.parser.ParseException;
import org.apache.activemq.protobuf.compiler.parser.Token;
public class ParserSupport {
public static String decodeString(Token token) throws ParseException {
// StringBuilder sb = new StringBuilder();
// for (int i = 1; i < value.length() - 1; i++) {
// char c = value.charAt(i);
// if (c == '\'') {
// if( i+1 < (value.length() - 1) ) {
// char e = value.charAt(i+1);
// switch(e) {
// case 'a':
// sb.append((char)0x07);
// break;
// case 'b':
// sb.append("\b");
// break;
// case 'f':
// sb.append("\f");
// break;
// case 'n':
// sb.append("\n");
// break;
// case 'r':
// sb.append("\r");
// break;
// case 't':
// sb.append("\t");
// break;
// case 'v':
// sb.append((char)0x0b);
// break;
// case '\\':
// sb.append("\\");
// break;
// case '\'':
// sb.append("'");
// break;
// case '\"':
// sb.append("\"");
// break;
// default:
// sb.append(e);
// break;
// }
// } else {
// throw new RuntimeException("Invalid string litteral: "+value);
// }
// }
// sb.append(c);
// }
// return sb.toString();
try {
return TextFormat.unescapeText(token.image.substring(1, token.image.length()-1));
} catch (InvalidEscapeSequence e) {
throw new ParseException("Invalid string litteral at line " + token.next.beginLine + ", column " + token.next.beginColumn+": "+e.getMessage());
}
}
}