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annotate graal/GraalCompiler/src/com/sun/c1x/ir/BlockList.java @ 2509:16b9a8b5ad39

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Renamings Runtime=>GraalRuntime and Compiler=>GraalCompiler
author Thomas Wuerthinger <thomas@wuerthinger.net>
date Wed, 27 Apr 2011 11:50:44 +0200
parents graal/Compiler/src/com/sun/c1x/ir/BlockList.java@9ec15d6914ca
children 4a6518c4d17d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
2507
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1 /*
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2 * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.sun.c1x.ir;
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24
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25 import java.util.*;
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26
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27 /**
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28 * The {@code BlockList} class implements a specialized list data structure for representing
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29 * the predecessor and successor lists of basic blocks.
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30 *
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31 * @author Ben L. Titzer
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32 */
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33 public class BlockList implements Iterable<BlockBegin> {
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34
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35 private BlockBegin[] array;
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36 private int cursor;
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37
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38 BlockList(int sizeHint) {
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39 if (sizeHint > 0) {
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40 array = new BlockBegin[sizeHint];
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41 } else {
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42 array = new BlockBegin[2];
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43 }
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44 }
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45
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46 public void remove(int index) {
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47 if (index < 0 || index >= cursor) {
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48 throw new IndexOutOfBoundsException();
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49 }
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50 for (int i = index; i < cursor; i++) {
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51 array[i] = array[i + 1];
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52 }
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53 cursor--;
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54 }
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55
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56 public void remove(BlockBegin block) {
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57 int j = 0;
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58 for (int i = 0; i < cursor; i++) {
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59 if (i != j) {
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60 array[j] = array[i];
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61 }
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62 if (array[i] != block) {
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63 j++;
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64 }
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65 }
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66 cursor = j;
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67 }
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68
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69 public void exchange(int index1, int index2) {
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70 if (index1 < 0 || index1 >= cursor) {
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71 throw new IndexOutOfBoundsException();
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72 }
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73 if (index2 < 0 || index2 >= cursor) {
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74 throw new IndexOutOfBoundsException();
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75 }
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76 BlockBegin t = array[index2];
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77 array[index2] = array[index1];
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78 array[index1] = t;
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79 }
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80
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81 public void insert(int index, BlockBegin block) {
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82 if (index < 0 || index >= cursor) {
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83 throw new IndexOutOfBoundsException();
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84 }
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85 growOne();
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86 for (int i = cursor; i > index; i--) {
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87 array[i] = array[i - 1];
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88 }
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89 array[cursor++] = block;
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90 }
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91
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92 public void append(BlockBegin block) {
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93 growOne();
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94 array[cursor++] = block;
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95 }
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96
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97 public BlockBegin get(int index) {
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98 if (index < 0 || index >= cursor) {
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99 throw new IndexOutOfBoundsException();
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100 }
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101 return array[index];
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102 }
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103
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104 public void replace(BlockBegin oldBlock, BlockBegin newBlock) {
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105 for (int i = 0; i < cursor; i++) {
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106 if (array[i] == oldBlock) {
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107 array[i] = newBlock;
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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 public boolean checkForSameBlock() {
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113 if (cursor == 0) {
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114 return true;
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115 }
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116 BlockBegin b = array[0];
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117 for (int i = 1; i < cursor; i++) {
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118 if (array[i] != b) {
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119 return false;
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120 }
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121 }
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122 return true;
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123 }
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124
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125 public Iterator<BlockBegin> iterator() {
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126 return new Iter();
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127 }
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128
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129 private void growOne() {
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130 if (cursor == array.length) {
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131 array = Arrays.copyOf(array, array.length * 3);
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132 }
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133 }
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134
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135 private class Iter implements Iterator<BlockBegin> {
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136 private int pos;
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137
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138 public boolean hasNext() {
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139 return pos < cursor;
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140 }
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141
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142 public BlockBegin next() {
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143 return array[pos++];
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144 }
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145
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146 public void remove() {
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147 BlockList.this.remove(pos);
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9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
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149 }
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
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150 }