1 | /*
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2 | * 10/03/2007
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3 | *
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4 | * TclTokenMaker.java - Scanner for the Tcl programming language.
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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 Tcl programming language.<p>
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19 | *
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20 | * This implementation was created using
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21 | * <a href="http://www.jflex.de/">JFlex</a> 1.4.1; however, the generated file
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22 | * was modified for performance. Memory allocation needs to be almost
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23 | * completely removed to be competitive with the handwritten lexers (subclasses
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24 | * of <code>AbstractTokenMaker</code>, so this class has been modified so that
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25 | * Strings are never allocated (via yytext()), and the scanner never has to
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26 | * worry about refilling its buffer (needlessly copying chars around).
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27 | * We can achieve this because RText always scans exactly 1 line of tokens at a
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28 | * time, and hands the scanner this line as an array of characters (a Segment
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29 | * really). Since tokens contain pointers to char arrays instead of Strings
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30 | * holding their contents, there is no need for allocating new memory for
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31 | * Strings.<p>
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32 | *
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33 | * The actual algorithm generated for scanning has, of course, not been
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34 | * modified.<p>
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35 | *
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36 | * If you wish to regenerate this file yourself, keep in mind the following:
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37 | * <ul>
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38 | * <li>The generated TclTokenMaker.java</code> file will contain two
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39 | * definitions of both <code>zzRefill</code> and <code>yyreset</code>.
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40 | * You should hand-delete the second of each definition (the ones
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41 | * generated by the lexer), as these generated methods modify the input
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42 | * buffer, which we'll never have to do.</li>
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43 | * <li>You should also change the declaration/definition of zzBuffer to NOT
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44 | * be initialized. This is a needless memory allocation for us since we
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45 | * will be pointing the array somewhere else anyway.</li>
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46 | * <li>You should NOT call <code>yylex()</code> on the generated scanner
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47 | * directly; rather, you should use <code>getTokenList</code> as you would
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48 | * with any other <code>TokenMaker</code> instance.</li>
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49 | * </ul>
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50 | *
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51 | * @author Robert Futrell
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52 | * @version 0.5
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53 | *
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54 | */
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55 | %%
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56 |
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57 | %public
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58 | %class TclTokenMaker
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59 | %extends AbstractJFlexCTokenMaker
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60 | %unicode
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61 | %type org.fife.ui.rsyntaxtextarea.Token
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62 |
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63 |
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64 | %{
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65 |
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66 |
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67 | /**
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68 | * Constructor. This must be here because JFlex does not generate a
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69 | * no-parameter constructor.
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70 | */
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71 | public TclTokenMaker() {
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72 | }
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73 |
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74 |
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75 | /**
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76 | * Adds the token specified to the current linked list of tokens.
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77 | *
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78 | * @param tokenType The token's type.
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79 | */
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80 | private void addToken(int tokenType) {
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81 | addToken(zzStartRead, zzMarkedPos-1, tokenType);
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82 | }
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83 |
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84 |
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85 | /**
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86 | * Adds the token specified to the current linked list of tokens.
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87 | *
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88 | * @param tokenType The token's type.
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89 | */
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90 | private void addToken(int start, int end, int tokenType) {
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91 | int so = start + offsetShift;
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92 | addToken(zzBuffer, start,end, tokenType, so);
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93 | }
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94 |
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95 |
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96 | /**
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97 | * Adds the token specified to the current linked list of tokens.
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98 | *
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99 | * @param array The character array.
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100 | * @param start The starting offset in the array.
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101 | * @param end The ending offset in the array.
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102 | * @param tokenType The token's type.
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103 | * @param startOffset The offset in the document at which this token
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104 | * occurs.
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105 | */
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106 | public void addToken(char[] array, int start, int end, int tokenType, int startOffset) {
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107 | super.addToken(array, start,end, tokenType, startOffset);
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108 | zzStartRead = zzMarkedPos;
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109 | }
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110 |
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111 |
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112 | /**
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113 | * Returns the text to place at the beginning and end of a
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114 | * line to "comment" it in a this programming language.
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115 | *
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116 | * @return The start and end strings to add to a line to "comment"
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117 | * it out.
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118 | */
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119 | public String[] getLineCommentStartAndEnd() {
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120 | return new String[] { "//", null };
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121 | }
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122 |
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123 |
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124 | /**
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125 | * Returns the first token in the linked list of tokens generated
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126 | * from <code>text</code>. This method must be implemented by
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127 | * subclasses so they can correctly implement syntax highlighting.
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128 | *
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129 | * @param text The text from which to get tokens.
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130 | * @param initialTokenType The token type we should start with.
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131 | * @param startOffset The offset into the document at which
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132 | * <code>text</code> starts.
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133 | * @return The first <code>Token</code> in a linked list representing
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134 | * the syntax highlighted text.
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135 | */
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136 | public Token getTokenList(Segment text, int initialTokenType, int startOffset) {
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137 |
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138 | resetTokenList();
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139 | this.offsetShift = -text.offset + startOffset;
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140 |
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141 | // Start off in the proper state.
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142 | int state = Token.NULL;
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143 |
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144 | s = text;
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145 | try {
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146 | yyreset(zzReader);
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147 | yybegin(state);
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148 | return yylex();
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149 | } catch (IOException ioe) {
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150 | ioe.printStackTrace();
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151 | return new DefaultToken();
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152 | }
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153 |
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154 | }
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155 |
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156 |
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157 | /**
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158 | * Refills the input buffer.
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159 | *
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160 | * @return <code>true</code> if EOF was reached, otherwise
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161 | * <code>false</code>.
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162 | * @exception IOException if any I/O-Error occurs.
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163 | */
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164 | private boolean zzRefill() throws java.io.IOException {
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165 | return zzCurrentPos>=s.offset+s.count;
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166 | }
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167 |
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168 |
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169 | /**
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170 | * Resets the scanner to read from a new input stream.
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171 | * Does not close the old reader.
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172 | *
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173 | * All internal variables are reset, the old input stream
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174 | * <b>cannot</b> be reused (internal buffer is discarded and lost).
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175 | * Lexical state is set to <tt>YY_INITIAL</tt>.
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176 | *
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177 | * @param reader the new input stream
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178 | */
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179 | public final void yyreset(java.io.Reader reader) throws java.io.IOException {
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180 | // 's' has been updated.
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181 | zzBuffer = s.array;
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182 | /*
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183 | * We replaced the line below with the two below it because zzRefill
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184 | * no longer "refills" the buffer (since the way we do it, it's always
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185 | * "full" the first time through, since it points to the segment's
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186 | * array). So, we assign zzEndRead here.
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187 | */
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188 | //zzStartRead = zzEndRead = s.offset;
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189 | zzStartRead = s.offset;
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190 | zzEndRead = zzStartRead + s.count - 1;
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191 | zzCurrentPos = zzMarkedPos = zzPushbackPos = s.offset;
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192 | zzLexicalState = YYINITIAL;
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193 | zzReader = reader;
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194 | zzAtBOL = true;
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195 | zzAtEOF = false;
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196 | }
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197 |
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198 |
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199 | %}
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200 |
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201 | Letter = [A-Za-z]
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202 | NonzeroDigit = [1-9]
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203 | Digit = ("0"|{NonzeroDigit})
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204 | HexDigit = ({Digit}|[A-Fa-f])
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205 | OctalDigit = ([0-7])
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206 | EscapedSourceCharacter = ("u"{HexDigit}{HexDigit}{HexDigit}{HexDigit})
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207 | NonSeparator = ([^\t\f\r\n\ \(\)\{\}\[\]\;\,\.\=\>\<\!\~\?\:\+\-\*\/\&\|\^\%\"\']|"#"|"\\")
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208 | IdentifierStart = ({Letter}|"_"|"$")
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209 | IdentifierPart = ({IdentifierStart}|{Digit}|("\\"{EscapedSourceCharacter}))
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210 |
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211 | LineTerminator = (\n)
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212 | WhiteSpace = ([ \t\f])
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213 |
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214 | UnclosedStringLiteral = ([\"]([\\].|[^\\\"])*[^\"]?)
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215 | StringLiteral = ({UnclosedStringLiteral}[\"])
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216 |
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217 | LineCommentBegin = "#"
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218 |
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219 | IntegerHelper1 = (({NonzeroDigit}{Digit}*)|"0")
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220 | IntegerHelper2 = ("0"(([xX]{HexDigit}+)|({OctalDigit}*)))
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221 | IntegerLiteral = ({IntegerHelper1}[lL]?)
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222 | HexLiteral = ({IntegerHelper2}[lL]?)
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223 | FloatHelper1 = ([fFdD]?)
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224 | FloatHelper2 = ([eE][+-]?{Digit}+{FloatHelper1})
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225 | FloatLiteral1 = ({Digit}+"."({FloatHelper1}|{FloatHelper2}|{Digit}+({FloatHelper1}|{FloatHelper2})))
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226 | FloatLiteral2 = ("."{Digit}+({FloatHelper1}|{FloatHelper2}))
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227 | FloatLiteral3 = ({Digit}+{FloatHelper2})
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228 | FloatLiteral = ({FloatLiteral1}|{FloatLiteral2}|{FloatLiteral3}|({Digit}+[fFdD]))
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229 | ErrorNumberFormat = (({IntegerLiteral}|{HexLiteral}|{FloatLiteral}){NonSeparator}+)
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230 |
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231 | Separator = ([\(\)\{\}\[\]])
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232 | Separator2 = ([\;,.])
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233 |
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234 | Operator = ("="|"!"|"+"|"-"|"*"|"/"|">"=?|"<"=?|"%"|"&"|"|"|"^"|"~")
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235 |
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236 | Identifier = ({IdentifierStart}{IdentifierPart}*)
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237 | ErrorIdentifier = ({NonSeparator}+)
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238 |
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239 |
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240 | %%
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241 |
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242 | /* Keywords */
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243 | <YYINITIAL> "append" { addToken(Token.RESERVED_WORD); }
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244 | <YYINITIAL> "array" { addToken(Token.RESERVED_WORD); }
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245 | <YYINITIAL> "auto_mkindex" { addToken(Token.RESERVED_WORD); }
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246 | <YYINITIAL> "concat" { addToken(Token.RESERVED_WORD); }
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247 | <YYINITIAL> "console" { addToken(Token.RESERVED_WORD); }
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248 | <YYINITIAL> "eval" { addToken(Token.RESERVED_WORD); }
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249 | <YYINITIAL> "expr" { addToken(Token.RESERVED_WORD); }
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250 | <YYINITIAL> "format" { addToken(Token.RESERVED_WORD); }
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251 | <YYINITIAL> "global" { addToken(Token.RESERVED_WORD); }
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252 | <YYINITIAL> "set" { addToken(Token.RESERVED_WORD); }
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253 | <YYINITIAL> "trace" { addToken(Token.RESERVED_WORD); }
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254 | <YYINITIAL> "unset" { addToken(Token.RESERVED_WORD); }
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255 | <YYINITIAL> "upvar" { addToken(Token.RESERVED_WORD); }
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256 | <YYINITIAL> "join" { addToken(Token.RESERVED_WORD); }
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257 | <YYINITIAL> "lappend" { addToken(Token.RESERVED_WORD); }
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258 | <YYINITIAL> "lindex" { addToken(Token.RESERVED_WORD); }
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259 | <YYINITIAL> "linsert" { addToken(Token.RESERVED_WORD); }
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260 | <YYINITIAL> "list" { addToken(Token.RESERVED_WORD); }
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261 | <YYINITIAL> "llength" { addToken(Token.RESERVED_WORD); }
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262 | <YYINITIAL> "lrange" { addToken(Token.RESERVED_WORD); }
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263 | <YYINITIAL> "lreplace" { addToken(Token.RESERVED_WORD); }
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264 | <YYINITIAL> "lsearch" { addToken(Token.RESERVED_WORD); }
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265 | <YYINITIAL> "lsort" { addToken(Token.RESERVED_WORD); }
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266 | <YYINITIAL> "split" { addToken(Token.RESERVED_WORD); }
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267 | <YYINITIAL> "scan" { addToken(Token.RESERVED_WORD); }
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268 | <YYINITIAL> "string" { addToken(Token.RESERVED_WORD); }
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269 | <YYINITIAL> "regexp" { addToken(Token.RESERVED_WORD); }
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270 | <YYINITIAL> "regsub" { addToken(Token.RESERVED_WORD); }
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271 | <YYINITIAL> "if" { addToken(Token.RESERVED_WORD); }
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272 | <YYINITIAL> "else" { addToken(Token.RESERVED_WORD); }
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273 | <YYINITIAL> "elseif" { addToken(Token.RESERVED_WORD); }
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274 | <YYINITIAL> "switch" { addToken(Token.RESERVED_WORD); }
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275 | <YYINITIAL> "for" { addToken(Token.RESERVED_WORD); }
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276 | <YYINITIAL> "foreach" { addToken(Token.RESERVED_WORD); }
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277 | <YYINITIAL> "while" { addToken(Token.RESERVED_WORD); }
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278 | <YYINITIAL> "break" { addToken(Token.RESERVED_WORD); }
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279 | <YYINITIAL> "continue" { addToken(Token.RESERVED_WORD); }
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280 | <YYINITIAL> "proc" { addToken(Token.RESERVED_WORD); }
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281 | <YYINITIAL> "return" { addToken(Token.RESERVED_WORD); }
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282 | <YYINITIAL> "source" { addToken(Token.RESERVED_WORD); }
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283 | <YYINITIAL> "unkown" { addToken(Token.RESERVED_WORD); }
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284 | <YYINITIAL> "uplevel" { addToken(Token.RESERVED_WORD); }
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285 | <YYINITIAL> "cd" { addToken(Token.RESERVED_WORD); }
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286 | <YYINITIAL> "close" { addToken(Token.RESERVED_WORD); }
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287 | <YYINITIAL> "eof" { addToken(Token.RESERVED_WORD); }
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288 | <YYINITIAL> "file" { addToken(Token.RESERVED_WORD); }
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289 | <YYINITIAL> "flush" { addToken(Token.RESERVED_WORD); }
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290 | <YYINITIAL> "gets" { addToken(Token.RESERVED_WORD); }
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291 | <YYINITIAL> "glob" { addToken(Token.RESERVED_WORD); }
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292 | <YYINITIAL> "open" { addToken(Token.RESERVED_WORD); }
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293 | <YYINITIAL> "read" { addToken(Token.RESERVED_WORD); }
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294 | <YYINITIAL> "puts" { addToken(Token.RESERVED_WORD); }
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295 | <YYINITIAL> "pwd" { addToken(Token.RESERVED_WORD); }
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296 | <YYINITIAL> "seek" { addToken(Token.RESERVED_WORD); }
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297 | <YYINITIAL> "tell" { addToken(Token.RESERVED_WORD); }
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298 | <YYINITIAL> "catch" { addToken(Token.RESERVED_WORD); }
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299 | <YYINITIAL> "error" { addToken(Token.RESERVED_WORD); }
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300 | <YYINITIAL> "exec" { addToken(Token.RESERVED_WORD); }
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301 | <YYINITIAL> "pid" { addToken(Token.RESERVED_WORD); }
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302 | <YYINITIAL> "after" { addToken(Token.RESERVED_WORD); }
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303 | <YYINITIAL> "time" { addToken(Token.RESERVED_WORD); }
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304 | <YYINITIAL> "exit" { addToken(Token.RESERVED_WORD); }
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305 | <YYINITIAL> "history" { addToken(Token.RESERVED_WORD); }
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306 | <YYINITIAL> "rename" { addToken(Token.RESERVED_WORD); }
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307 | <YYINITIAL> "info" { addToken(Token.RESERVED_WORD); }
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308 | <YYINITIAL> "ceil" { addToken(Token.RESERVED_WORD); }
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309 | <YYINITIAL> "floor" { addToken(Token.RESERVED_WORD); }
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310 | <YYINITIAL> "round" { addToken(Token.RESERVED_WORD); }
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311 | <YYINITIAL> "incr" { addToken(Token.RESERVED_WORD); }
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312 | <YYINITIAL> "hypot" { addToken(Token.RESERVED_WORD); }
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313 | <YYINITIAL> "abs" { addToken(Token.RESERVED_WORD); }
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314 | <YYINITIAL> "acos" { addToken(Token.RESERVED_WORD); }
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315 | <YYINITIAL> "cos" { addToken(Token.RESERVED_WORD); }
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316 | <YYINITIAL> "cosh" { addToken(Token.RESERVED_WORD); }
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317 | <YYINITIAL> "asin" { addToken(Token.RESERVED_WORD); }
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318 | <YYINITIAL> "sin" { addToken(Token.RESERVED_WORD); }
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319 | <YYINITIAL> "sinh" { addToken(Token.RESERVED_WORD); }
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320 | <YYINITIAL> "atan" { addToken(Token.RESERVED_WORD); }
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321 | <YYINITIAL> "atan2" { addToken(Token.RESERVED_WORD); }
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322 | <YYINITIAL> "tan" { addToken(Token.RESERVED_WORD); }
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323 | <YYINITIAL> "tanh" { addToken(Token.RESERVED_WORD); }
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324 | <YYINITIAL> "log" { addToken(Token.RESERVED_WORD); }
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325 | <YYINITIAL> "log10" { addToken(Token.RESERVED_WORD); }
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326 | <YYINITIAL> "fmod" { addToken(Token.RESERVED_WORD); }
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327 | <YYINITIAL> "pow" { addToken(Token.RESERVED_WORD); }
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328 | <YYINITIAL> "hypot" { addToken(Token.RESERVED_WORD); }
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329 | <YYINITIAL> "sqrt" { addToken(Token.RESERVED_WORD); }
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330 | <YYINITIAL> "double" { addToken(Token.RESERVED_WORD); }
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331 | <YYINITIAL> "int" { addToken(Token.RESERVED_WORD); }
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332 |
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333 | <YYINITIAL> "bind" { addToken(Token.RESERVED_WORD); }
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334 | <YYINITIAL> "button" { addToken(Token.RESERVED_WORD); }
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335 | <YYINITIAL> "canvas" { addToken(Token.RESERVED_WORD); }
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336 | <YYINITIAL> "checkbutton" { addToken(Token.RESERVED_WORD); }
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337 | <YYINITIAL> "destroy" { addToken(Token.RESERVED_WORD); }
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338 | <YYINITIAL> "entry" { addToken(Token.RESERVED_WORD); }
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339 | <YYINITIAL> "focus" { addToken(Token.RESERVED_WORD); }
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340 | <YYINITIAL> "frame" { addToken(Token.RESERVED_WORD); }
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341 | <YYINITIAL> "grab" { addToken(Token.RESERVED_WORD); }
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342 | <YYINITIAL> "image" { addToken(Token.RESERVED_WORD); }
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343 | <YYINITIAL> "label" { addToken(Token.RESERVED_WORD); }
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344 | <YYINITIAL> "listbox" { addToken(Token.RESERVED_WORD); }
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345 | <YYINITIAL> "lower" { addToken(Token.RESERVED_WORD); }
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346 | <YYINITIAL> "menu" { addToken(Token.RESERVED_WORD); }
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347 | <YYINITIAL> "menubutton" { addToken(Token.RESERVED_WORD); }
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348 | <YYINITIAL> "message" { addToken(Token.RESERVED_WORD); }
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349 | <YYINITIAL> "option" { addToken(Token.RESERVED_WORD); }
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350 | <YYINITIAL> "pack" { addToken(Token.RESERVED_WORD); }
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351 | <YYINITIAL> "placer" { addToken(Token.RESERVED_WORD); }
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352 | <YYINITIAL> "radiobutton" { addToken(Token.RESERVED_WORD); }
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353 | <YYINITIAL> "raise" { addToken(Token.RESERVED_WORD); }
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354 | <YYINITIAL> "scale" { addToken(Token.RESERVED_WORD); }
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355 | <YYINITIAL> "scrollbar" { addToken(Token.RESERVED_WORD); }
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356 | <YYINITIAL> "selection" { addToken(Token.RESERVED_WORD); }
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357 | <YYINITIAL> "send" { addToken(Token.RESERVED_WORD); }
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358 | <YYINITIAL> "text" { addToken(Token.RESERVED_WORD); }
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359 | <YYINITIAL> "tk" { addToken(Token.RESERVED_WORD); }
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360 | <YYINITIAL> "tkerror" { addToken(Token.RESERVED_WORD); }
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361 | <YYINITIAL> "tkwait" { addToken(Token.RESERVED_WORD); }
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362 | <YYINITIAL> "toplevel" { addToken(Token.RESERVED_WORD); }
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363 | <YYINITIAL> "update" { addToken(Token.RESERVED_WORD); }
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364 | <YYINITIAL> "winfo" { addToken(Token.RESERVED_WORD); }
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365 | <YYINITIAL> "wm" { addToken(Token.RESERVED_WORD); }
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366 |
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367 |
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368 | <YYINITIAL> {
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369 |
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370 | {LineTerminator} { addNullToken(); return firstToken; }
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371 |
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372 | {Identifier} { addToken(Token.IDENTIFIER); }
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373 |
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374 | {WhiteSpace}+ { addToken(Token.WHITESPACE); }
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375 |
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376 | /* String/Character literals. */
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377 | {StringLiteral} { addToken(Token.LITERAL_STRING_DOUBLE_QUOTE); }
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378 | {UnclosedStringLiteral} { addToken(Token.ERROR_STRING_DOUBLE); addNullToken(); return firstToken; }
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379 |
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380 | /* Comment literals. */
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381 | {LineCommentBegin}.* { addToken(Token.COMMENT_EOL); addNullToken(); return firstToken; }
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382 |
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383 | /* Separators. */
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384 | {Separator} { addToken(Token.SEPARATOR); }
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385 | {Separator2} { addToken(Token.IDENTIFIER); }
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386 |
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387 | /* Operators. */
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388 | {Operator} { addToken(Token.OPERATOR); }
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389 |
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390 | /* Numbers */
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391 | {IntegerLiteral} { addToken(Token.LITERAL_NUMBER_DECIMAL_INT); }
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392 | {HexLiteral} { addToken(Token.LITERAL_NUMBER_HEXADECIMAL); }
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393 | {FloatLiteral} { addToken(Token.LITERAL_NUMBER_FLOAT); }
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394 | {ErrorNumberFormat} { addToken(Token.ERROR_NUMBER_FORMAT); }
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395 |
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396 | {ErrorIdentifier} { addToken(Token.ERROR_IDENTIFIER); }
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397 |
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398 | /* Ended with a line not in a string or comment. */
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399 | <<EOF>> { addNullToken(); return firstToken; }
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400 |
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401 | /* Catch any other (unhandled) characters and flag them as bad. */
|
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402 | . { addToken(Token.ERROR_IDENTIFIER); }
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403 |
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404 | }
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