001/** 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.apache.camel.language.simple.types; 018 019import org.apache.camel.ExpressionIllegalSyntaxException; 020 021/** 022 * Syntax error in the simple language expression. 023 */ 024public class SimpleIllegalSyntaxException extends ExpressionIllegalSyntaxException { 025 private static final long serialVersionUID = 1L; 026 private final int index; 027 private final String message; 028 029 public SimpleIllegalSyntaxException(String expression, int index, String message) { 030 super(expression); 031 this.index = index; 032 this.message = message; 033 } 034 035 public SimpleIllegalSyntaxException(String expression, int index, String message, Throwable cause) { 036 super(expression, cause); 037 this.index = index; 038 this.message = message; 039 } 040 041 /** 042 * Index where the parsing error occurred 043 * 044 * @return index of the parsing error in the input, returns <tt>-1</tt> if the cause of the problem 045 * is not applicable to specific index in the input 046 */ 047 public int getIndex() { 048 return index; 049 } 050 051 /** 052 * Gets a short error message. 053 */ 054 public String getShortMessage() { 055 if (message == null) { 056 return "[null]"; 057 } 058 return message; 059 } 060 061 @Override 062 public String getMessage() { 063 if (message == null) { 064 return "[null]"; 065 } 066 067 StringBuilder sb = new StringBuilder(message); 068 if (index > -1) { 069 sb.append(" at location ").append(index); 070 // create a nice looking message with indicator where the problem is 071 sb.append("\n").append(getExpression()).append("\n"); 072 for (int i = 0; i < index; i++) { 073 sb.append(" "); 074 } 075 sb.append("*\n"); 076 } 077 return sb.toString(); 078 } 079 080}