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annotate graal/com.oracle.truffle.api/src/com/oracle/truffle/api/SourceSection.java @ 9822:e210293dca77

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Generated hashCode and equals for SourceSection. Source is abstract, so just uses identity methods for that.
author Chris Seaton <chris.seaton@oracle.com>
date Sat, 25 May 2013 16:31:05 -0700
parents 5dc05fdcf3c2
children b9b8af46c2b7
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * Copyright (c) 2013, 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.oracle.truffle.api;
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24
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25 /**
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26 * Represents a section in the source code of a guest language program.
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27 */
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28 public class SourceSection {
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29
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30 private final Source source;
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31 private final String identifier;
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32 private final int startLine;
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33 private final int startColumn;
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34 private final int charIndex;
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35 private final int charLength;
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36
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37 /**
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38 * Creates a new object representing a section in the source code of a guest language program.
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39 *
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40 * @param source object representing the source program this is should be a section of
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41 * @param identifier an identifier used when printing the section
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42 * @param startLine the index of the start line of the section
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43 * @param startColumn the index of the start column of the section
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44 * @param charIndex the index of the first character of the section
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45 * @param charLength the length of the section in number of characters
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46 */
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47 public SourceSection(Source source, String identifier, int startLine, int startColumn, int charIndex, int charLength) {
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48 this.source = source;
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49 this.identifier = identifier;
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50 this.startLine = startLine;
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51 this.startColumn = startColumn;
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52 this.charIndex = charIndex;
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53 this.charLength = charLength;
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54 }
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55
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56 /**
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57 * Returns the source object representing the source program this is a section of.
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58 *
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59 * @return the source object
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60 */
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61 public final Source getSource() {
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62 return source;
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63 }
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64
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65 /**
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66 * Returns the index of the start line of this source section (inclusive).
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67 *
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68 * @return the start line
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69 */
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70 public final int getStartLine() {
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71 return startLine;
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72 }
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73
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74 /**
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75 * Returns the index of the start column of this source section (inclusive).
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76 *
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77 * @return the start column
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78 */
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79 public final int getStartColumn() {
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80 return startColumn;
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81 }
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82
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83 /**
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84 * Returns the index of the first character of this section. All characters of the source can be
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85 * retrieved via the {@link Source#getCode()} method.
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86 *
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87 * @return the character index
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88 */
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89 public final int getCharIndex() {
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90 return charIndex;
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91 }
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92
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93 /**
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94 * Returns the length of this section in characters. All characters of the source can be
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95 * retrieved via the {@link Source#getCode()} method.
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96 *
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97 * @return the character length
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98 */
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99 public final int getCharLength() {
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100 return charLength;
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101 }
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102
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103 /**
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104 * Returns the identifier of this source section that is used for printing the section.
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105 *
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106 * @return the identifier of the section
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107 */
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108 public final String getIdentifier() {
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109 return identifier;
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110 }
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111
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112 /**
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113 * Returns the code represented by this code section.
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114 *
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115 * @return the code as a String object
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116 */
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117 public final String getCode() {
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118 return getSource().getCode().substring(charIndex, charIndex + charLength);
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119 }
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120
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121 @Override
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122 public String toString() {
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123 return String.format("%s:%d", source.getName(), startLine);
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124 }
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125
9822
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126 @Override
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127 public int hashCode() {
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128 final int prime = 31;
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129 int result = 1;
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130 result = prime * result + charIndex;
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131 result = prime * result + charLength;
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132 result = prime * result + ((identifier == null) ? 0 : identifier.hashCode());
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133 result = prime * result + ((source == null) ? 0 : source.hashCode());
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134 result = prime * result + startColumn;
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135 result = prime * result + startLine;
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136 return result;
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137 }
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138
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139 @Override
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140 public boolean equals(Object obj) {
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141 if (this == obj) {
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142 return true;
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143 }
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144 if (obj == null) {
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145 return false;
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146 }
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147 if (!(obj instanceof SourceSection)) {
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148 return false;
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149 }
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150 SourceSection other = (SourceSection) obj;
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151 if (charIndex != other.charIndex) {
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152 return false;
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153 }
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154 if (charLength != other.charLength) {
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155 return false;
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156 }
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157 if (identifier == null) {
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158 if (other.identifier != null) {
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159 return false;
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160 }
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161 } else if (!identifier.equals(other.identifier)) {
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162 return false;
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163 }
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164 if (source == null) {
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165 if (other.source != null) {
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166 return false;
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167 }
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168 } else if (!source.equals(other.source)) {
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169 return false;
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170 }
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171 if (startColumn != other.startColumn) {
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172 return false;
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173 }
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174 if (startLine != other.startLine) {
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175 return false;
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176 }
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177 return true;
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178 }
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179
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4497235516df New API for representing Source objects and SourceSection objects. SourceSection objects can be associated with Truffle interpreter nodes.
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180 }