Mercurial > hg4j

annotate src/org/tmatesoft/hg/internal/IntSliceSeq.java @ 709:497e697636fc

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Report merged lines as changed block if possible, not as a sequence of added/deleted blocks. To facilitate access to merge parent lines AddBlock got mergeLineAt() method that reports index of the line in the second parent (if any), while insertedAt() has been changed to report index in the first parent always
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Wed, 21 Aug 2013 16:23:27 +0200
parents 58a6900f845d
children
rev   line source
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1 /*
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2 * Copyright (c) 2013 TMate Software Ltd
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3 *
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4 * This program is free software; you can redistribute it and/or modify
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5 * it under the terms of the GNU General Public License as published by
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6 * the Free Software Foundation; version 2 of the License.
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7 *
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8 * This program is distributed in the hope that it will be useful,
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9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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11 * GNU General Public License for more details.
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12 *
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13 * For information on how to redistribute this software under
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14 * the terms of a license other than GNU General Public License
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15 * contact TMate Software at support@hg4j.com
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16 */
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17 package org.tmatesoft.hg.internal;
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18
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19 import java.util.Iterator;
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20 import java.util.NoSuchElementException;
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21
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22 /**
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23 *
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24 * @author Artem Tikhomirov
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25 * @author TMate Software Ltd.
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26 */
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27 public final class IntSliceSeq implements Iterable<IntTuple>, Cloneable {
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28 private final IntVector slices;
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29 private final int slice;
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30
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31 public IntSliceSeq(int sliceSize) {
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32 // initial size/grow values are pure guess
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33 this(sliceSize, 10, 5);
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34 }
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35
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36 public IntSliceSeq(int sliceSize, int initialSlices, int slicesToGrow) {
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37 slices = new IntVector(sliceSize * initialSlices, sliceSize*slicesToGrow);
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38 slice = sliceSize;
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39 }
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40
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41 public IntSliceSeq add(int... values) {
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42 checkValuesAny(values);
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43 slices.add(values);
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44 return this;
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45 }
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46
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47 public IntSliceSeq set(int sliceIndex, int... values) {
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48 checkValuesExact(values);
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49 for (int i = 0, j = sliceIndex*slice; i < slice; i++,j++) {
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50 slices.set(j, values[i]);
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51 }
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52 return this;
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53 }
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54
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55 public IntTuple get(int sliceIndex) {
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56 checkArgRange(size(), sliceIndex);
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57 return new IntTuple(slice).set(slices, sliceIndex*slice);
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58 }
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59
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60 public int get(int sliceIndex, int valueIndex) {
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61 checkArgRange(size(), sliceIndex);
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62 checkArgRange(slice, valueIndex);
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63 return slices.get(sliceIndex*slice + valueIndex);
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64 }
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65
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66 public void addAll(IntSliceSeq other) {
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67 if (other.slice != this.slice) {
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68 throw new IllegalArgumentException(String.format("Tuple size doesn't match: %d and %d", slice, other.slice));
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69 }
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70 slices.addAll(other.slices);
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71 }
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72
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73 public int size() {
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74 return slices.size() / slice;
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75 }
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76
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77 public int sliceSize() {
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78 return slice;
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79 }
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80
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81 public void clear() {
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82 slices.clear();
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83 }
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84
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85 public IntTuple last() {
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86 int lastElementIndex = (size() - 1);
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87 if (lastElementIndex < 0) {
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88 throw new NoSuchElementException();
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89 }
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90 return get(lastElementIndex);
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91 }
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92
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93 public Iterator<IntTuple> iterator() {
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94 return new Iterator<IntTuple>() {
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95 private final IntTuple t = new IntTuple(slice);
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96 private int next = 0;
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97
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98 public boolean hasNext() {
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99 return next < size();
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100 }
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101
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102 public IntTuple next() {
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103 return t.set(slices, next++*slice);
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104 }
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105
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106 public void remove() {
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107 throw new UnsupportedOperationException();
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108 }
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109 };
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110 }
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111
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112 @Override
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113 public String toString() {
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114 StringBuilder sb = new StringBuilder();
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115 for (int i = 0; i < size(); i++) {
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116 sb.append('(');
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117 for (int j = 0; j < slice; j++) {
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118 sb.append(slices.get(i*slice + j));
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119 sb.append(',');
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120 }
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121 sb.setLength(sb.length() - 1);
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122 sb.append(')');
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123 sb.append(' ');
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124 }
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125 return sb.toString();
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126 }
680
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127
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128 @Override
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129 public IntSliceSeq clone() {
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130 try {
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131 return (IntSliceSeq) super.clone();
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132 } catch (CloneNotSupportedException ex) {
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133 throw new Error(ex);
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134 }
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135 }
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136
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137 private void checkArgRange(int rangeSize, int index) {
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138 if (index >= 0 && index < rangeSize) {
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139 return;
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140 }
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141 throw new IllegalArgumentException(String.valueOf(index));
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142 }
680
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143 private void checkValuesExact(int[] values) {
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144 if (values == null || values.length != slice) {
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145 throw new IllegalArgumentException(String.valueOf(values == null ? values : values.length));
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146 }
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147 }
680
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148 private void checkValuesAny(int[] values) {
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149 if (values == null || values.length % slice != 0) {
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150 throw new IllegalArgumentException(String.valueOf(values == null ? values : values.length));
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151 }
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152 }
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153 }