1 // Protocol Buffers - Google's data interchange format 2 // Copyright 2008 Google Inc. All rights reserved. 3 // https://developers.google.com/protocol-buffers/ 4 // 5 // Redistribution and use in source and binary forms, with or without 6 // modification, are permitted provided that the following conditions are 7 // met: 8 // 9 // * Redistributions of source code must retain the above copyright 10 // notice, this list of conditions and the following disclaimer. 11 // * Redistributions in binary form must reproduce the above 12 // copyright notice, this list of conditions and the following disclaimer 13 // in the documentation and/or other materials provided with the 14 // distribution. 15 // * Neither the name of Google Inc. nor the names of its 16 // contributors may be used to endorse or promote products derived from 17 // this software without specific prior written permission. 18 // 19 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 22 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 23 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 25 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 29 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 31 package com.google.protobuf; 32 33 import java.util.Arrays; 34 35 /** 36 * A location in the source code. 37 * 38 * <p>A location is the starting line number and starting column number. 39 */ 40 public final class TextFormatParseLocation { 41 42 /** The empty location. */ 43 public static final TextFormatParseLocation EMPTY = new TextFormatParseLocation(-1, -1); 44 45 /** 46 * Create a location. 47 * 48 * @param line the starting line number 49 * @param column the starting column number 50 * @return a {@code ParseLocation} 51 */ create(int line, int column)52 static TextFormatParseLocation create(int line, int column) { 53 if (line == -1 && column == -1) { 54 return EMPTY; 55 } 56 if (line < 0 || column < 0) { 57 throw new IllegalArgumentException( 58 String.format("line and column values must be >= 0: line %d, column: %d", line, column)); 59 } 60 return new TextFormatParseLocation(line, column); 61 } 62 63 private final int line; 64 private final int column; 65 TextFormatParseLocation(int line, int column)66 private TextFormatParseLocation(int line, int column) { 67 this.line = line; 68 this.column = column; 69 } 70 getLine()71 public int getLine() { 72 return line; 73 } 74 getColumn()75 public int getColumn() { 76 return column; 77 } 78 79 @Override toString()80 public String toString() { 81 return String.format("ParseLocation{line=%d, column=%d}", line, column); 82 } 83 84 @Override equals(Object o)85 public boolean equals(Object o) { 86 if (o == this) { 87 return true; 88 } 89 if (!(o instanceof TextFormatParseLocation)) { 90 return false; 91 } 92 TextFormatParseLocation that = (TextFormatParseLocation) o; 93 return (this.line == that.getLine()) && (this.column == that.getColumn()); 94 } 95 96 @Override hashCode()97 public int hashCode() { 98 int[] values = {line, column}; 99 return Arrays.hashCode(values); 100 } 101 } 102