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annotate graal/com.oracle.truffle.api/src/com/oracle/truffle/api/impl/DefaultSourceSection.java @ 13705:ac5b0f31f7a2

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Truffle API-change: FrameDescriptors are now stored in the RootNode in a final field instead of the CallTarget.
author Christian Humer <christian.humer@gmail.com>
date Fri, 17 Jan 2014 17:06:08 +0100
parents 5f532ea846fb
children c54f5fa05fd5
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11610
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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. Oracle designates this
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8 * particular file as subject to the "Classpath" exception as provided
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9 * by Oracle in the LICENSE file that accompanied this code.
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10 *
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11 * This code is distributed in the hope that it will be useful, but WITHOUT
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 * version 2 for more details (a copy is included in the LICENSE file that
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15 * accompanied this code).
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16 *
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17 * You should have received a copy of the GNU General Public License version
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18 * 2 along with this work; if not, write to the Free Software Foundation,
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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20 *
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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22 * or visit www.oracle.com if you need additional information or have any
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23 * questions.
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24 */
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25 package com.oracle.truffle.api.impl;
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26
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27 import com.oracle.truffle.api.*;
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28
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29 /**
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30 * Represents a contiguous text section within the source code of a guest language program.
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31 */
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32 public class DefaultSourceSection implements SourceSection {
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33
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34 private final Source source;
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35 private final String identifier;
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36 private final int startLine;
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37 private final int startColumn;
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38 private final int charIndex;
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39 private final int charLength;
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40
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41 /**
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42 * Creates a new object representing a contiguous text section within the source code of a guest
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43 * language program's text.
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44 * <p>
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45 * The starting location of the section is specified using two different coordinate:
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46 * <ul>
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47 * <li><b>(row, column)</b>: rows and columns are 1-based, so the first character in a source
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48 * file is at position {@code (1,1)}.</li>
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49 * <li><b>character index</b>: 0-based offset of the character from the beginning of the source,
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50 * so the first character in a file is at index {@code 0}.</li>
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51 * </ul>
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52 * The <b>newline</b> that terminates each line counts as a single character for the purpose of
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53 * a character index. The (row,column) coordinates of a newline character should never appear in
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54 * a text section.
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55 * <p>
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56 *
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57 * @param source object representing the complete source program that contains this section
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58 * @param identifier an identifier used when printing the section
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59 * @param startLine the 1-based number of the start line of the section
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60 * @param startColumn the 1-based number of the start column of the section
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61 * @param charIndex the 0-based index of the first character of the section
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62 * @param charLength the length of the section in number of characters
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63 */
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64 public DefaultSourceSection(Source source, String identifier, int startLine, int startColumn, int charIndex, int charLength) {
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65 this.source = source;
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66 this.identifier = identifier;
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67 this.startLine = startLine;
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68 this.startColumn = startColumn;
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69 this.charIndex = charIndex;
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70 this.charLength = charLength;
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71 }
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72
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73 public final Source getSource() {
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74 return source;
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75 }
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76
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77 public final int getStartLine() {
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78 return startLine;
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79 }
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80
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81 public final int getStartColumn() {
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82 return startColumn;
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83 }
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84
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85 public final int getCharIndex() {
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86 return charIndex;
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87 }
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88
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89 public final int getCharLength() {
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90 return charLength;
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91 }
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92
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93 public final int getCharEndIndex() {
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94 return charIndex + charLength;
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95 }
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96
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97 public final String getIdentifier() {
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98 return identifier;
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99 }
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100
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101 public final String getCode() {
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102 return getSource().getCode().substring(charIndex, charIndex + charLength);
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103 }
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104
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105 @Override
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106 public String toString() {
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107 return String.format("%s:%d", source.getName(), startLine);
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108 }
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109
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110 @Override
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111 public int hashCode() {
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112 final int prime = 31;
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113 int result = 1;
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114 result = prime * result + charIndex;
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115 result = prime * result + charLength;
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116 result = prime * result + ((identifier == null) ? 0 : identifier.hashCode());
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117 result = prime * result + ((source == null) ? 0 : source.hashCode());
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118 result = prime * result + startColumn;
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119 result = prime * result + startLine;
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120 return result;
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121 }
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122
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123 @Override
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124 public boolean equals(Object obj) {
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125 if (this == obj) {
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126 return true;
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127 }
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128 if (obj == null) {
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129 return false;
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130 }
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131 if (!(obj instanceof DefaultSourceSection)) {
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132 return false;
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133 }
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134 DefaultSourceSection other = (DefaultSourceSection) obj;
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135 if (charIndex != other.charIndex) {
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136 return false;
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137 }
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138 if (charLength != other.charLength) {
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139 return false;
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140 }
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141 if (identifier == null) {
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142 if (other.identifier != null) {
5f532ea846fb applied changes to basic-graal that were made in a downstream repo
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
143 return false;
5f532ea846fb applied changes to basic-graal that were made in a downstream repo
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
144 }
5f532ea846fb applied changes to basic-graal that were made in a downstream repo
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
145 } else if (!identifier.equals(other.identifier)) {
5f532ea846fb applied changes to basic-graal that were made in a downstream repo
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
146 return false;
5f532ea846fb applied changes to basic-graal that were made in a downstream repo
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
147 }
5f532ea846fb applied changes to basic-graal that were made in a downstream repo
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
148 if (source == null) {
5f532ea846fb applied changes to basic-graal that were made in a downstream repo
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
149 if (other.source != null) {
5f532ea846fb applied changes to basic-graal that were made in a downstream repo
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
150 return false;
5f532ea846fb applied changes to basic-graal that were made in a downstream repo
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
151 }
5f532ea846fb applied changes to basic-graal that were made in a downstream repo
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
152 } else if (!source.equals(other.source)) {
5f532ea846fb applied changes to basic-graal that were made in a downstream repo
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
153 return false;
5f532ea846fb applied changes to basic-graal that were made in a downstream repo
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
154 }
5f532ea846fb applied changes to basic-graal that were made in a downstream repo
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
155 if (startColumn != other.startColumn) {
5f532ea846fb applied changes to basic-graal that were made in a downstream repo
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
156 return false;
5f532ea846fb applied changes to basic-graal that were made in a downstream repo
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
157 }
5f532ea846fb applied changes to basic-graal that were made in a downstream repo
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
158 if (startLine != other.startLine) {
5f532ea846fb applied changes to basic-graal that were made in a downstream repo
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
159 return false;
5f532ea846fb applied changes to basic-graal that were made in a downstream repo
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
160 }
5f532ea846fb applied changes to basic-graal that were made in a downstream repo
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
161 return true;
5f532ea846fb applied changes to basic-graal that were made in a downstream repo
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
162 }
5f532ea846fb applied changes to basic-graal that were made in a downstream repo
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
163
5f532ea846fb applied changes to basic-graal that were made in a downstream repo
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
164 }