| /* |
| * 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.felix.gogo.runtime; |
| |
| public class Token implements CharSequence { |
| |
| protected final char[] ch; |
| protected final int start; |
| protected final int length; |
| protected final int line; |
| protected final int column; |
| |
| public Token(CharSequence cs) |
| { |
| if (cs instanceof Token) |
| { |
| Token ca = (Token) cs; |
| this.ch = ca.ch; |
| this.start = ca.start; |
| this.length = ca.length; |
| this.line = ca.line; |
| this.column = ca.column; |
| } |
| else |
| { |
| this.ch = cs.toString().toCharArray(); |
| this.start = 0; |
| this.length = ch.length; |
| this.line = 0; |
| this.column = 0; |
| } |
| } |
| |
| public Token(char[] _ch, int _start, int _length, int _line, int _col) |
| { |
| this.ch = _ch; |
| this.start = _start; |
| this.length = _length; |
| this.line = _line; |
| this.column = _col; |
| } |
| |
| public int line() |
| { |
| return line; |
| } |
| |
| public int column() |
| { |
| return column; |
| } |
| |
| public int start() |
| { |
| return start; |
| } |
| |
| public int length() |
| { |
| return this.length; |
| } |
| |
| public char charAt(int index) |
| { |
| return this.ch[this.start + index]; |
| } |
| |
| public Token subSequence(int start, int end) |
| { |
| int line = this.line; |
| int col = this.column; |
| for (int i = this.start; i < this.start + start; i++) |
| { |
| if (ch[i] == '\n') |
| { |
| line++; |
| col = 0; |
| } |
| else |
| { |
| col++; |
| } |
| } |
| return new Token(this.ch, this.start + start, end - start, line, col); |
| } |
| |
| public String toString() |
| { |
| return new String(this.ch, this.start, this.length); |
| } |
| |
| public static boolean eq(CharSequence cs1, CharSequence cs2) |
| { |
| if (cs1 == cs2) |
| { |
| return true; |
| } |
| int l1 = cs1.length(); |
| int l2 = cs2.length(); |
| if (l1 != l2) |
| { |
| return false; |
| } |
| for (int i = 0; i < l1; i++) |
| { |
| if (cs1.charAt(i) != cs2.charAt(i)) |
| { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| } |