1 | /*
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2 | * 12/23/2010
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3 | *
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4 | * ClojureTokenMaker.java - Scanner for Clojure.
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5 | *
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6 | * This library is distributed under a modified BSD license. See the included
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7 | * RSyntaxTextArea.License.txt file for details.
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8 | */
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9 | package org.fife.ui.rsyntaxtextarea.modes;
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10 |
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11 | import java.io.*;
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12 | import javax.swing.text.Segment;
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13 |
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14 | import org.fife.ui.rsyntaxtextarea.*;
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15 |
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16 |
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17 | /**
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18 | * Scanner for the Clojure programming language.<p>
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19 | *
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20 | * This was graciously donated by the folks at the
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21 | * <a href="http://pacific.mpi-cbg.de/wiki/index.php/Fiji">Fiji</a> project.
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22 | * Its original location was
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23 | * <a href="http://pacific.mpi-cbg.de/cgi-bin/gitweb.cgi?p=fiji.git;a=tree;f=src-plugins/Script_Editor/fiji/scripting;hb=935d85d9d88dd780c6d5f2765937ddc18b5008ca">here</a>.
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24 | * <p>
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25 | *
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26 | * This implementation was created using
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27 | * <a href="http://www.jflex.de/">JFlex</a> 1.4.1; however, the generated file
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28 | * was modified for performance. Memory allocation needs to be almost
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29 | * completely removed to be competitive with the handwritten lexers (subclasses
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30 | * of <code>AbstractTokenMaker</code>, so this class has been modified so that
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31 | * Strings are never allocated (via yytext()), and the scanner never has to
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32 | * worry about refilling its buffer (needlessly copying chars around).
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33 | * We can achieve this because RText always scans exactly 1 line of tokens at a
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34 | * time, and hands the scanner this line as an array of characters (a Segment
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35 | * really). Since tokens contain pointers to char arrays instead of Strings
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36 | * holding their contents, there is no need for allocating new memory for
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37 | * Strings.<p>
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38 | *
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39 | * The actual algorithm generated for scanning has, of course, not been
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40 | * modified.<p>
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41 | *
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42 | * If you wish to regenerate this file yourself, keep in mind the following:
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43 | * <ul>
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44 | * <li>The generated ClojureTokenMaker.java</code> file will contain two
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45 | * definitions of both <code>zzRefill</code> and <code>yyreset</code>.
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46 | * You should hand-delete the second of each definition (the ones
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47 | * generated by the lexer), as these generated methods modify the input
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48 | * buffer, which we'll never have to do.</li>
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49 | * <li>You should also change the declaration/definition of zzBuffer to NOT
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50 | * be initialized. This is a needless memory allocation for us since we
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51 | * will be pointing the array somewhere else anyway.</li>
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52 | * <li>You should NOT call <code>yylex()</code> on the generated scanner
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53 | * directly; rather, you should use <code>getTokenList</code> as you would
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54 | * with any other <code>TokenMaker</code> instance.</li>
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55 | * </ul>
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56 | *
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57 | *
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58 | */
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59 | %%
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60 |
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61 | %public
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62 | %class ClojureTokenMaker
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63 | %extends AbstractJFlexTokenMaker
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64 | %unicode
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65 | %type org.fife.ui.rsyntaxtextarea.Token
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66 |
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67 |
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68 | %{
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69 |
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70 |
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71 | /**
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72 | * Constructor. This must be here because JFlex does not generate a
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73 | * no-parameter constructor.
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74 | */
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75 | public ClojureTokenMaker() {
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76 | }
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77 |
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78 |
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79 | /**
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80 | * Adds the token specified to the current linked list of tokens.
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81 | *
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82 | * @param tokenType The token's type.
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83 | * @see #addToken(int, int, int)
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84 | */
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85 | private void addHyperlinkToken(int start, int end, int tokenType) {
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86 | int so = start + offsetShift;
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87 | addToken(zzBuffer, start,end, tokenType, so, true);
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88 | }
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89 |
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90 |
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91 | /**
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92 | * Adds the token specified to the current linked list of tokens.
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93 | *
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94 | * @param tokenType The token's type.
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95 | */
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96 | private void addToken(int tokenType) {
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97 | addToken(zzStartRead, zzMarkedPos-1, tokenType);
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98 | }
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99 |
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100 |
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101 | /**
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102 | * Adds the token specified to the current linked list of tokens.
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103 | *
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104 | * @param tokenType The token's type.
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105 | * @see #addHyperlinkToken(int, int, int)
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106 | */
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107 | private void addToken(int start, int end, int tokenType) {
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108 | int so = start + offsetShift;
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109 | addToken(zzBuffer, start,end, tokenType, so, false);
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110 | }
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111 |
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112 |
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113 | /**
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114 | * Adds the token specified to the current linked list of tokens.
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115 | *
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116 | * @param array The character array.
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117 | * @param start The starting offset in the array.
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118 | * @param end The ending offset in the array.
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119 | * @param tokenType The token's type.
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120 | * @param startOffset The offset in the document at which this token
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121 | * occurs.
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122 | * @param hyperlink Whether this token is a hyperlink.
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123 | */
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124 | public void addToken(char[] array, int start, int end, int tokenType,
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125 | int startOffset, boolean hyperlink) {
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126 | super.addToken(array, start,end, tokenType, startOffset, hyperlink);
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127 | zzStartRead = zzMarkedPos;
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128 | }
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129 |
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130 |
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131 | /**
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132 | * Returns the text to place at the beginning and end of a
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133 | * line to "comment" it in a this programming language.
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134 | *
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135 | * @return The start and end strings to add to a line to "comment"
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136 | * it out.
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137 | */
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138 | public String[] getLineCommentStartAndEnd() {
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139 | return new String[] { ";", null };
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140 | }
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141 |
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142 |
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143 | /**
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144 | * Returns the first token in the linked list of tokens generated
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145 | * from <code>text</code>. This method must be implemented by
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146 | * subclasses so they can correctly implement syntax highlighting.
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147 | *
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148 | * @param text The text from which to get tokens.
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149 | * @param initialTokenType The token type we should start with.
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150 | * @param startOffset The offset into the document at which
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151 | * <code>text</code> starts.
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152 | * @return The first <code>Token</code> in a linked list representing
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153 | * the syntax highlighted text.
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154 | */
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155 | public Token getTokenList(Segment text, int initialTokenType, int startOffset) {
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156 |
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157 | resetTokenList();
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158 | this.offsetShift = -text.offset + startOffset;
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159 |
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160 | // Start off in the proper state.
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161 | int state = Token.NULL;
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162 | switch (initialTokenType) {
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163 | /*case Token.COMMENT_MULTILINE:
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164 | state = MLC;
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165 | start = text.offset;
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166 | break;
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167 | case Token.COMMENT_DOCUMENTATION:
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168 | state = DOCCOMMENT;
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169 | start = text.offset;
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170 | break;*/
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171 | case Token.LITERAL_STRING_DOUBLE_QUOTE:
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172 | state = STRING;
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173 | start = text.offset;
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174 | break;
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175 | default:
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176 | state = Token.NULL;
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177 | }
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178 |
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179 | s = text;
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180 | try {
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181 | yyreset(zzReader);
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182 | yybegin(state);
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183 | return yylex();
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184 | } catch (IOException ioe) {
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185 | ioe.printStackTrace();
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186 | return new DefaultToken();
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187 | }
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188 |
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189 | }
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190 |
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191 |
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192 | /**
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193 | * Refills the input buffer.
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194 | *
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195 | * @return <code>true</code> if EOF was reached, otherwise
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196 | * <code>false</code>.
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197 | * @exception IOException if any I/O-Error occurs.
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198 | */
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199 | private boolean zzRefill() throws java.io.IOException {
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200 | return zzCurrentPos>=s.offset+s.count;
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201 | }
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202 |
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203 |
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204 | /**
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205 | * Resets the scanner to read from a new input stream.
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206 | * Does not close the old reader.
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207 | *
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208 | * All internal variables are reset, the old input stream
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209 | * <b>cannot</b> be reused (internal buffer is discarded and lost).
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210 | * Lexical state is set to <tt>YY_INITIAL</tt>.
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211 | *
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212 | * @param reader the new input stream
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213 | */
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214 | public final void yyreset(java.io.Reader reader) throws java.io.IOException {
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215 | // 's' has been updated.
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216 | zzBuffer = s.array;
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217 | /*
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218 | * We replaced the line below with the two below it because zzRefill
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219 | * no longer "refills" the buffer (since the way we do it, it's always
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220 | * "full" the first time through, since it points to the segment's
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221 | * array). So, we assign zzEndRead here.
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222 | */
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223 | //zzStartRead = zzEndRead = s.offset;
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224 | zzStartRead = s.offset;
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225 | zzEndRead = zzStartRead + s.count - 1;
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226 | zzCurrentPos = zzMarkedPos = s.offset;
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227 | zzLexicalState = YYINITIAL;
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228 | zzReader = reader;
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229 | zzAtBOL = true;
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230 | zzAtEOF = false;
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231 | }
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232 |
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233 |
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234 | %}
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235 |
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236 |
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237 | LineCommentBegin = (";")
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238 | Keyword = ([:][a-zA-Z?!\-+*/][a-zA-Z0-9?!\-+*/]*)
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239 | NonzeroDigit = [1-9]
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240 | Digit = ("0"|{NonzeroDigit})
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241 | HexDigit = ({Digit}|[A-Fa-f])
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242 | OctalDigit = ([0-7])
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243 | EscapedSourceCharacter = ("u"{HexDigit}{HexDigit}{HexDigit}{HexDigit})
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244 | Escape = ("\\"(([btnfr\"'\\])|([0123]{OctalDigit}?{OctalDigit}?)|({OctalDigit}{OctalDigit}?)|{EscapedSourceCharacter}))
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245 | AnyCharacterButDoubleQuoteOrBackSlash = ([^\\\"\n])
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246 | UnclosedStringLiteral = ([\"]([\\].|[^\\\"])*[^\"]?)
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247 | ErrorStringLiteral = ({UnclosedStringLiteral}[\"])
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248 | StringLiteral = ([\"])
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249 | CharLiteral = ("\\."|"\\space"|"\\tab"|"\\newline")
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250 | AnyCharacter = ([.]*)
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251 | Separator = ([\(\)\{\}\[\]])
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252 | NonSeparator = ([^\t\f\r\n\ \(\)\{\}\[\]\;\,\.\=\>\<\!\~\?\:\+\-\*\/\&\|\^\%\"\'])
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253 |
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254 | BooleanLiteral =("true"|"false")
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255 |
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256 | LineTerminator = (\n)
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257 | WhiteSpace = ([ \t\f])
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258 |
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259 | IntegerHelper1 = (({NonzeroDigit}{Digit}*)|"0")
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260 | IntegerHelper2 = ("0"(([xX]{HexDigit}+)|({OctalDigit}*)))
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261 | IntegerLiteral = ({IntegerHelper1}[lL]?)
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262 | HexLiteral = ({IntegerHelper2}[lL]?)
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263 | FloatHelper1 = ([fFdD]?)
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264 | FloatHelper2 = ([eE][+-]?{Digit}+{FloatHelper1})
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265 | FloatLiteral1 = ({Digit}+"."({FloatHelper1}|{FloatHelper2}|{Digit}+({FloatHelper1}|{FloatHelper2})))
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266 | FloatLiteral2 = ("."{Digit}+({FloatHelper1}|{FloatHelper2}))
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267 | FloatLiteral3 = ({Digit}+{FloatHelper2})
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268 | FloatLiteral = ({FloatLiteral1}|{FloatLiteral2}|{FloatLiteral3}|({Digit}+[fFdD]))
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269 | ErrorNumberFormat = (({IntegerLiteral}|{HexLiteral}|{FloatLiteral}){NonSeparator}+)
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270 |
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271 |
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272 | Nil = ("nil")
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273 | Quote = (\('\|`\))
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274 | Unquote = (\(\~@\|\~\))
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275 | DispatchStart = ("#^"|"#^{")
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276 | Dispatch = ({DispatchStart}[^\s\t\n;\"}]*([ \t\n;\"]|"}"))
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277 | VarQuote = ("#'"[.]*[ \t\n;(\"])
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278 | DefName = (\s*[a-zA-Z0-9?!\-+*\./<>]*)
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279 |
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280 | NonAssignmentOperator = ("+"|"-"|"<="|"^"|"<"|"*"|">="|"%"|">"|"/"|"!="|"?"|">>"|"!"|"&"|"=="|":"|">>"|"~"|">>>")
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281 | AssignmentOperator = ("=")
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282 | Operator = ({NonAssignmentOperator}|{AssignmentOperator})
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283 |
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284 | Letter = [A-Za-z]
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285 | LetterOrUnderscore = ({Letter}|[_])
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286 | Digit = [0-9]
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287 | URLGenDelim = ([:\/\?#\[\]@])
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288 | URLSubDelim = ([\!\$&'\(\)\*\+,;=])
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289 | URLUnreserved = ({LetterOrUnderscore}|{Digit}|[\-\.\~])
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290 | URLCharacter = ({URLGenDelim}|{URLSubDelim}|{URLUnreserved}|[%])
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291 | URLCharacters = ({URLCharacter}*)
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292 | URLEndCharacter = ([\/\$]|{Letter}|{Digit})
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293 | URL = (((https?|f(tp|ile))"://"|"www.")({URLCharacters}{URLEndCharacter})?)
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294 |
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295 |
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296 | %state STRING
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297 | %state EOL_COMMENT
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298 |
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299 | %%
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300 |
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301 | <YYINITIAL> {
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302 |
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303 | "fn" |
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304 | "if" |
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305 | "cond" |
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306 | "def" |
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307 | "defn" |
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308 | "let" |
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309 | "new" |
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310 | "defmacro" |
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311 | "recur" |
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312 | "loop" |
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313 | "thisfn" |
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314 | "do" |
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315 | "quote" |
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316 | "the-var" |
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317 | "class" |
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318 | "instance?" |
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319 | "throw" |
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320 | "try-finally" |
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321 | "set!" |
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322 | "monitor-enter" |
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323 | "monitor-exit" { addToken(Token.RESERVED_WORD); }
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324 |
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325 | "load-file" |
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326 | "eql-ref?" |
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327 | "list" |
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328 | "cons" |
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329 | "conj" |
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330 | "vector" |
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331 | "hash-map" |
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332 | "sorted-map" |
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333 | "sorted-map-by" |
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334 | "meta" |
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335 | "with-meta" |
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336 | "when" |
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337 | "when-not" |
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338 | "nil?" |
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339 | "not" |
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340 | "first" |
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341 | "rest" |
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342 | "second" |
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343 | "ffirst" |
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344 | "frest" |
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345 | "rfirst" |
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346 | "rrest" |
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347 | "eql?" |
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348 | "str" |
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349 | "strcat" |
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350 | "gensym" |
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351 | "apply" |
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352 | "list*" |
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353 | "delay" |
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354 | "lazy-cons" |
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355 | "fnseq" |
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356 | "concat" |
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357 | "inc" |
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358 | "dec" |
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359 | "pos?" |
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360 | "neg?" |
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361 | "zero?" |
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362 | "quot" |
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363 | "rem" |
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364 | "complement" |
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365 | "constantly" |
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366 | "identity" |
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367 | "seq" |
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368 | "count" |
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369 | "assoc" |
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370 | "dissoc" |
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371 | "find" |
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372 | "keys" |
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373 | "vals" |
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374 | "merge" |
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375 | "rseq" |
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376 | "sym" |
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377 | "name" |
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378 | "namespace" |
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379 | "locking" |
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380 | ".." |
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381 | "->" |
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382 | "defmulti" |
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383 | "defmethod" |
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384 | "remove-method" |
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385 | "binding" |
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386 | "find-var" |
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387 | "ref" |
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388 | "deref" |
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389 | "commute" |
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390 | "alter" |
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391 | "set" |
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392 | "ensure" |
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393 | "sync" |
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394 | "agent" |
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395 | "agent-of" |
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396 | "agent-errors" |
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397 | "clear-agent-errors" |
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398 | "reduce" |
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399 | "reverse" |
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400 | "comp" |
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401 | "appl" |
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402 | "every" |
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403 | "not-every" |
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404 | "any" |
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405 | "not-any" |
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406 | "map" |
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407 | "pmap" |
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408 | "mapcat" |
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409 | "filter" |
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410 | "take" |
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411 | "take-while" |
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412 | "drop" |
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413 | "drop-while" |
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414 | "zipmap" |
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415 | "cycle" |
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416 | "split-at" |
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417 | "split-with" |
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418 | "repeat" |
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419 | "replicate" |
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420 | "iterate" |
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421 | "range" |
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422 | "doseq" |
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423 | "dotimes" |
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424 | "into" |
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425 | "eval" |
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426 | "import" |
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427 | "unimport" |
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428 | "refer" |
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429 | "unrefer" |
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430 | "in-namespace" |
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431 | "unintern" |
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432 | "into-array" |
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433 | "array" |
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434 | "make-proxy" |
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435 | "implement" |
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436 | "prn" |
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437 | "print" |
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438 | "newline" |
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439 | "*out*" |
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440 | "*current-namespace*" |
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441 | "*print-meta*"
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442 | "doto" |
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443 | "memfn" |
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444 | "read" |
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445 | "*in*" |
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446 | "time" |
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447 | "key" |
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448 | "val" |
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449 | "int" |
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450 | "long" |
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451 | "float" |
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452 | "double" |
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453 | "short" |
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454 | "byte" |
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455 | "boolean" |
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456 | "char" |
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457 | "aget" |
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458 | "aset" |
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459 | "aset-boolean" |
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460 | "aset-int" |
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461 | "aset-long" |
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462 | "aset-float" |
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463 | "aset-double" |
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464 | "aset-short" |
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465 | "aset-byte" |
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466 | "make-array" |
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467 | "peek" |
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468 | "pop" |
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469 | "nth" |
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470 | "get" |
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471 | "and" |
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472 | "or" { addToken(Token.FUNCTION); }
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473 |
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474 | {LineTerminator} { addNullToken(); return firstToken; }
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475 |
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476 | {WhiteSpace}+ { addToken(Token.WHITESPACE); }
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477 |
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478 | {CharLiteral} { addToken(Token.LITERAL_CHAR); }
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479 | {StringLiteral} { start = zzMarkedPos-1; yybegin(STRING); }
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480 | //{UnclosedStringLiteral} { addToken(Token.ERROR_STRING_DOUBLE); addNullToken(); return firstToken; }
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481 | //{ErrorStringLiteral} { addToken(Token.ERROR_STRING_DOUBLE); }
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482 |
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483 | {Nil} { addToken(Token.DATA_TYPE); }
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484 |
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485 | {BooleanLiteral} { addToken(Token.LITERAL_BOOLEAN); }
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486 |
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487 |
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488 | {Quote} { addToken(Token.SEPARATOR); }
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489 | {Unquote} { addToken(Token.SEPARATOR); }
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490 | {VarQuote} { addToken(Token.SEPARATOR); }
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491 | {Dispatch} { addToken(Token.DATA_TYPE); }
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492 |
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493 | {LineCommentBegin} { start = zzMarkedPos-1; yybegin(EOL_COMMENT); }
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494 |
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495 | {Separator} { addToken(Token.SEPARATOR); }
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496 |
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497 | {Operator} { addToken(Token.OPERATOR); }
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498 |
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499 | {IntegerLiteral} { addToken(Token.LITERAL_NUMBER_DECIMAL_INT); }
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500 | {HexLiteral} { addToken(Token.LITERAL_NUMBER_HEXADECIMAL); }
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501 | {FloatLiteral} { addToken(Token.LITERAL_NUMBER_FLOAT); }
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502 | {ErrorNumberFormat} { addToken(Token.ERROR_NUMBER_FORMAT); }
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503 | {Keyword} { addToken(Token.PREPROCESSOR); }
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504 | {DefName} { addToken(Token.IDENTIFIER); }
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505 |
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506 | <<EOF>> { addNullToken(); return firstToken; }
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507 |
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508 | . { addToken(Token.ERROR_IDENTIFIER); }
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509 |
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510 | }
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511 |
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512 | <STRING> {
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513 |
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514 | [^\n\"]+ {}
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515 | \n { addToken(start,zzStartRead-1, Token.LITERAL_STRING_DOUBLE_QUOTE); return firstToken; }
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516 | "\"\"" {}
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517 | "\"" { yybegin(YYINITIAL); addToken(start,zzStartRead, Token.LITERAL_STRING_DOUBLE_QUOTE); }
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518 | <<EOF>> { addToken(start,zzStartRead-1, Token.LITERAL_STRING_DOUBLE_QUOTE); return firstToken; }
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519 |
|
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520 | }
|
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521 |
|
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522 | <EOL_COMMENT> {
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523 | [^hwf\n]+ {}
|
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524 | {URL} { int temp=zzStartRead; addToken(start,zzStartRead-1, Token.COMMENT_EOL); addHyperlinkToken(temp,zzMarkedPos-1, Token.COMMENT_EOL); start = zzMarkedPos; }
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525 | [hwf] {}
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526 | \n { addToken(start,zzStartRead-1, Token.COMMENT_EOL); addNullToken(); return firstToken; }
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527 | <<EOF>> { addToken(start,zzStartRead-1, Token.COMMENT_EOL); addNullToken(); return firstToken; }
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528 |
|
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529 | }
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