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* CTokenMaker.java - An object that can take a chunk of text and
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* return a linked list of tokens representing it in the C programming
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* This library is distributed under a modified BSD license. See the included
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* RSyntaxTextArea.License.txt file for details.
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package org.fife.ui.rsyntaxtextarea.modes;
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import javax.swing.text.Segment;
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import org.fife.ui.rsyntaxtextarea.*;
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* Scanner for the C programming language.
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* This implementation was created using
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* <a href="http://www.jflex.de/">JFlex</a> 1.4.1; however, the generated file
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* was modified for performance. Memory allocation needs to be almost
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* completely removed to be competitive with the handwritten lexers (subclasses
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* of <code>AbstractTokenMaker</code>, so this class has been modified so that
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* Strings are never allocated (via yytext()), and the scanner never has to
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* worry about refilling its buffer (needlessly copying chars around).
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* We can achieve this because RText always scans exactly 1 line of tokens at a
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* time, and hands the scanner this line as an array of characters (a Segment
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* really). Since tokens contain pointers to char arrays instead of Strings
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* holding their contents, there is no need for allocating new memory for
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* The actual algorithm generated for scanning has, of course, not been
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* If you wish to regenerate this file yourself, keep in mind the following:
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* <li>The generated <code>CTokenMaker.java</code> file will contain two
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* definitions of both <code>zzRefill</code> and <code>yyreset</code>.
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* You should hand-delete the second of each definition (the ones
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* generated by the lexer), as these generated methods modify the input
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* buffer, which we'll never have to do.</li>
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* <li>You should also change the declaration/definition of zzBuffer to NOT
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* be initialized. This is a needless memory allocation for us since we
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* will be pointing the array somewhere else anyway.</li>
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* <li>You should NOT call <code>yylex()</code> on the generated scanner
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* directly; rather, you should use <code>getTokenList</code> as you would
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* with any other <code>TokenMaker</code> instance.</li>
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* @author Robert Futrell
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%extends AbstractJFlexCTokenMaker
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%type org.fife.ui.rsyntaxtextarea.Token
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* Constructor. This must be here because JFlex does not generate a
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* no-parameter constructor.
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public CTokenMaker() {
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* Adds the token specified to the current linked list of tokens.
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* @param tokenType The token's type.
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* @see #addToken(int, int, int)
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private void addHyperlinkToken(int start, int end, int tokenType) {
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int so = start + offsetShift;
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addToken(zzBuffer, start,end, tokenType, so, true);
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* Adds the token specified to the current linked list of tokens.
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* @param tokenType The token's type.
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private void addToken(int tokenType) {
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addToken(zzStartRead, zzMarkedPos-1, tokenType);
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* Adds the token specified to the current linked list of tokens.
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* @param tokenType The token's type.
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private void addToken(int start, int end, int tokenType) {
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int so = start + offsetShift;
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addToken(zzBuffer, start,end, tokenType, so);
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* Adds the token specified to the current linked list of tokens.
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* @param array The character array.
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* @param start The starting offset in the array.
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* @param end The ending offset in the array.
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* @param tokenType The token's type.
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* @param startOffset The offset in the document at which this token
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public void addToken(char[] array, int start, int end, int tokenType, int startOffset) {
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super.addToken(array, start,end, tokenType, startOffset);
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zzStartRead = zzMarkedPos;
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* Returns the text to place at the beginning and end of a
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* line to "comment" it in a this programming language.
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* @return The start and end strings to add to a line to "comment"
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public String[] getLineCommentStartAndEnd() {
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return new String[] { "//", null };
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* Returns the first token in the linked list of tokens generated
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* from <code>text</code>. This method must be implemented by
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* subclasses so they can correctly implement syntax highlighting.
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* @param text The text from which to get tokens.
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* @param initialTokenType The token type we should start with.
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* @param startOffset The offset into the document at which
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* <code>text</code> starts.
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* @return The first <code>Token</code> in a linked list representing
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* the syntax highlighted text.
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public Token getTokenList(Segment text, int initialTokenType, int startOffset) {
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this.offsetShift = -text.offset + startOffset;
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// Start off in the proper state.
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int state = Token.NULL;
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switch (initialTokenType) {
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case Token.COMMENT_MULTILINE:
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} catch (IOException ioe) {
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ioe.printStackTrace();
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return new TokenImpl();
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* Refills the input buffer.
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* @return <code>true</code> if EOF was reached, otherwise
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* <code>false</code>.
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* @exception IOException if any I/O-Error occurs.
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private boolean zzRefill() throws java.io.IOException {
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return zzCurrentPos>=s.offset+s.count;
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* Resets the scanner to read from a new input stream.
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* Does not close the old reader.
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* All internal variables are reset, the old input stream
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* <b>cannot</b> be reused (internal buffer is discarded and lost).
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* Lexical state is set to <tt>YY_INITIAL</tt>.
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* @param reader the new input stream
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public final void yyreset(java.io.Reader reader) throws java.io.IOException {
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// 's' has been updated.
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* We replaced the line below with the two below it because zzRefill
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* no longer "refills" the buffer (since the way we do it, it's always
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* "full" the first time through, since it points to the segment's
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* array). So, we assign zzEndRead here.
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//zzStartRead = zzEndRead = s.offset;
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zzStartRead = s.offset;
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zzEndRead = zzStartRead + s.count - 1;
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zzCurrentPos = zzMarkedPos = zzPushbackPos = s.offset;
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zzLexicalState = YYINITIAL;
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LetterOrUnderscore = ({Letter}|[_])
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HexDigit = {Digit}|[A-Fa-f]
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Exponent = [eE][+-]?{Digit}+
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PreprocessorWord = define|elif|else|endif|error|if|ifdef|ifndef|include|line|pragma|undef
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Trigraph = ("??="|"??("|"??)"|"??/"|"??'"|"??<"|"??>"|"??!"|"??-")
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OctEscape1 = ([\\]{OctalDigit})
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OctEscape2 = ([\\]{OctalDigit}{OctalDigit})
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OctEscape3 = ([\\][0-3]{OctalDigit}{OctalDigit})
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OctEscape = ({OctEscape1}|{OctEscape2}|{OctEscape3})
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HexEscape = ([\\][xX]{HexDigit}{HexDigit})
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AnyChrChr = ([^\'\n\\])
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Escape = ([\\]([abfnrtv\'\"\?\\0]))
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UnclosedCharLiteral = ([\']({Escape}|{OctEscape}|{HexEscape}|{Trigraph}|{AnyChrChr}))
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CharLiteral = ({UnclosedCharLiteral}[\'])
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ErrorUnclosedCharLiteral = ([\'][^\'\n]*)
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ErrorCharLiteral = (([\'][\'])|{ErrorUnclosedCharLiteral}[\'])
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AnyStrChr = ([^\"\n\\])
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FalseTrigraph = (("?"(("?")*)[^\=\(\)\/\'\<\>\!\-\\\?\"\n])|("?"[\=\(\)\/\'\<\>\!\-]))
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StringLiteral = ([\"]((((("?")*)({Escape}|{OctEscape}|{HexEscape}|{Trigraph}))|{FalseTrigraph}|{AnyStrChr})*)(("?")*)[\"])
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UnclosedStringLiteral = ([\"]([\\].|[^\\\"])*[^\"]?)
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ErrorStringLiteral = ({UnclosedStringLiteral}[\"])
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LineCommentBegin = "//"
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NonFloatSuffix = (([uU][lL]?)|([lL][uU]?))
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IntegerLiteral = ({Digit}+{Exponent}?{NonFloatSuffix}?)
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HexLiteral = ("0"[xX]{HexDigit}+{NonFloatSuffix}?)
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FloatLiteral = ((({Digit}*[\.]{Digit}+)|({Digit}+[\.]{Digit}*)){Exponent}?[fFlL]?)
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ErrorNumberFormat = (({IntegerLiteral}|{HexLiteral}|{FloatLiteral}){NonSeparator}+)
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NonSeparator = ([^\t\f\r\n\ \(\)\{\}\[\]\;\,\.\=\>\<\!\~\?\:\+\-\*\/\&\|\^\%\"\']|"#")
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Identifier = ({LetterOrUnderscore}({LetterOrUnderscore}|{Digit}|[$])*)
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ErrorIdentifier = ({NonSeparator}+)
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URLGenDelim = ([:\/\?#\[\]@])
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URLSubDelim = ([\!\$&'\(\)\*\+,;=])
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URLUnreserved = ({LetterOrUnderscore}|{Digit}|[\-\.\~])
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URLCharacter = ({URLGenDelim}|{URLSubDelim}|{URLUnreserved}|[%])
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URLCharacters = ({URLCharacter}*)
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URLEndCharacter = ([\/\$]|{Letter}|{Digit})
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URL = (((https?|f(tp|ile))"://"|"www.")({URLCharacters}{URLEndCharacter})?)
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"while" { addToken(Token.RESERVED_WORD); }
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"wchar_t" { addToken(Token.DATA_TYPE); }
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/* Standard functions */
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"wscanf" { addToken(Token.FUNCTION); }
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/* Standard-defined macros. */
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"__STDC__" { addToken(Token.PREPROCESSOR); }
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{LineTerminator} { addNullToken(); return firstToken; }
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{Identifier} { addToken(Token.IDENTIFIER); }
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{WhiteSpace}+ { addToken(Token.WHITESPACE); }
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/* Preprocessor directives */
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"#"{WhiteSpace}*{PreprocessorWord} { addToken(Token.PREPROCESSOR); }
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/* String/Character Literals. */
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{CharLiteral} { addToken(Token.LITERAL_CHAR); }
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{UnclosedCharLiteral} { addToken(Token.ERROR_CHAR); /*addNullToken(); return firstToken;*/ }
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{ErrorUnclosedCharLiteral} { addToken(Token.ERROR_CHAR); addNullToken(); return firstToken; }
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{ErrorCharLiteral} { addToken(Token.ERROR_CHAR); }
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{StringLiteral} { addToken(Token.LITERAL_STRING_DOUBLE_QUOTE); }
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{UnclosedStringLiteral} { addToken(Token.ERROR_STRING_DOUBLE); addNullToken(); return firstToken; }
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{ErrorStringLiteral} { addToken(Token.ERROR_STRING_DOUBLE); }
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/* Comment Literals. */
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{MLCBegin} { start = zzMarkedPos-2; yybegin(MLC); }
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{LineCommentBegin} { start = zzMarkedPos-2; yybegin(EOL_COMMENT); }
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"}" { addToken(Token.SEPARATOR); }
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"," { addToken(Token.OPERATOR); }
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{IntegerLiteral} { addToken(Token.LITERAL_NUMBER_DECIMAL_INT); }
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{HexLiteral} { addToken(Token.LITERAL_NUMBER_HEXADECIMAL); }
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{FloatLiteral} { addToken(Token.LITERAL_NUMBER_FLOAT); }
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{ErrorNumberFormat} { addToken(Token.ERROR_NUMBER_FORMAT); }
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/* Some lines will end in '\' to wrap an expression. */
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"\\" { addToken(Token.IDENTIFIER); }
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{ErrorIdentifier} { addToken(Token.ERROR_IDENTIFIER); }
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/* Other punctuation, we'll highlight it as "identifiers." */
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";" { addToken(Token.IDENTIFIER); }
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/* Ended with a line not in a string or comment. */
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<<EOF>> { addNullToken(); return firstToken; }
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/* Catch any other (unhandled) characters and flag them as bad. */
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. { addToken(Token.ERROR_IDENTIFIER); }
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{URL} { int temp=zzStartRead; addToken(start,zzStartRead-1, Token.COMMENT_MULTILINE); addHyperlinkToken(temp,zzMarkedPos-1, Token.COMMENT_MULTILINE); start = zzMarkedPos; }
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\n { addToken(start,zzStartRead-1, Token.COMMENT_MULTILINE); return firstToken; }
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{MLCEnd} { yybegin(YYINITIAL); addToken(start,zzStartRead+1, Token.COMMENT_MULTILINE); }
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<<EOF>> { addToken(start,zzStartRead-1, Token.COMMENT_MULTILINE); return firstToken; }
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{URL} { int temp=zzStartRead; addToken(start,zzStartRead-1, Token.COMMENT_EOL); addHyperlinkToken(temp,zzMarkedPos-1, Token.COMMENT_EOL); start = zzMarkedPos; }
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\n { addToken(start,zzStartRead-1, Token.COMMENT_EOL); addNullToken(); return firstToken; }
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<<EOF>> { addToken(start,zzStartRead-1, Token.COMMENT_EOL); addNullToken(); return firstToken; }
added
removed
src/pc/DrMIPS/src/org/fife/ui/rsyntaxtextarea/modes/CTokenMaker.flex
