org.fife.ui.rsyntaxtextarea.modes.GroovyTokenMaker.flex Maven / Gradle / Ivy
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/* * 09/28/2007 * * GroovyTokenMaker.java - Scanner for the Groovy programming language. * * This library is distributed under a modified BSD license. See the included * RSyntaxTextArea.License.txt file for details. */ package org.fife.ui.rsyntaxtextarea.modes; import java.io.*; import javax.swing.text.Segment; import org.fife.ui.rsyntaxtextarea.*; /** * Scanner for the Groovy programming language.file will contain two * definitions of both* * This implementation was created using * JFlex 1.4.1; however, the generated file * was modified for performance. Memory allocation needs to be almost * completely removed to be competitive with the handwritten lexers (subclasses * of
AbstractTokenMaker, so this class has been modified so that * Strings are never allocated (via yytext()), and the scanner never has to * worry about refilling its buffer (needlessly copying chars around). * We can achieve this because RText always scans exactly 1 line of tokens at a * time, and hands the scanner this line as an array of characters (a Segment * really). Since tokens contain pointers to char arrays instead of Strings * holding their contents, there is no need for allocating new memory for * Strings.* * The actual algorithm generated for scanning has, of course, not been * modified.
* * If you wish to regenerate this file yourself, keep in mind the following: *
*
- The generated GroovyTokenMaker.java
zzRefillandyyreset. * You should hand-delete the second of each definition (the ones * generated by the lexer), as these generated methods modify the input * buffer, which we'll never have to do. *
yylex() on the generated scanner
* directly; rather, you should use getTokenList as you would
* with any other TokenMaker instance.text. This method must be implemented by
* subclasses so they can correctly implement syntax highlighting.
*
* @param text The text from which to get tokens.
* @param initialTokenType The token type we should start with.
* @param startOffset The offset into the document at which
* text starts.
* @return The first Token in a linked list representing
* the syntax highlighted text.
*/
public Token getTokenList(Segment text, int initialTokenType, int startOffset) {
resetTokenList();
this.offsetShift = -text.offset + startOffset;
// Start off in the proper state.
int state = Token.NULL;
switch (initialTokenType) {
case Token.LITERAL_STRING_DOUBLE_QUOTE:
state = MULTILINE_STRING_DOUBLE;
start = text.offset;
break;
case Token.LITERAL_CHAR:
state = MULTILINE_STRING_SINGLE;
start = text.offset;
break;
case Token.COMMENT_MULTILINE:
state = MLC;
start = text.offset;
break;
case Token.COMMENT_DOCUMENTATION:
state = DOCCOMMENT;
start = text.offset;
break;
default:
state = Token.NULL;
}
s = text;
try {
yyreset(zzReader);
yybegin(state);
return yylex();
} catch (IOException ioe) {
ioe.printStackTrace();
return new TokenImpl();
}
}
/**
* Returns whether a regular expression token can follow the specified
* token.
*
* @param t The token to check, which may be null.
* @return Whether a regular expression token may follow this one.
*/
private static final boolean regexCanFollow(Token t) {
char ch;
return t==null ||
//t.isOperator() ||
(t.length()==1 && (
(ch=t.charAt(0))=='=' ||
ch=='(' ||
ch==',' ||
ch=='?' ||
ch==':' ||
ch=='['
)) ||
/* Operators "==", "===", "!=", "!==", etc. */
(t.getType()==Token.OPERATOR &&
((ch=t.charAt(t.length()-1))=='=' || ch=='~'));
}
/**
* Refills the input buffer.
*
* @return true if EOF was reached, otherwise
* false.
*/
private boolean zzRefill() {
return zzCurrentPos>=s.offset+s.count;
}
/**
* Resets the scanner to read from a new input stream.
* Does not close the old reader.
*
* All internal variables are reset, the old input stream
* cannot be reused (internal buffer is discarded and lost).
* Lexical state is set to YY_INITIAL.
*
* @param reader the new input stream
*/
public final void yyreset(java.io.Reader reader) {
// 's' has been updated.
zzBuffer = s.array;
/*
* We replaced the line below with the two below it because zzRefill
* no longer "refills" the buffer (since the way we do it, it's always
* "full" the first time through, since it points to the segment's
* array). So, we assign zzEndRead here.
*/
//zzStartRead = zzEndRead = s.offset;
zzStartRead = s.offset;
zzEndRead = zzStartRead + s.count - 1;
zzCurrentPos = zzMarkedPos = zzPushbackPos = s.offset;
zzLexicalState = YYINITIAL;
zzReader = reader;
zzAtBOL = true;
zzAtEOF = false;
}
%}
Letter = [A-Za-z]
LetterOrUnderscore = ({Letter}|"_")
NonzeroDigit = [1-9]
BinaryDigit = ([0-1])
Digit = ("0"|{NonzeroDigit})
HexDigit = ({Digit}|[A-Fa-f])
OctalDigit = ([0-7])
AnyCharacterButApostropheOrBackSlash = ([^\\'])
EscapedSourceCharacter = ("u"{HexDigit}{HexDigit}{HexDigit}{HexDigit})
Escape = ("\\"(([btnfr\"'\\])|([0123]{OctalDigit}?{OctalDigit}?)|({OctalDigit}{OctalDigit}?)|{EscapedSourceCharacter}))
NonSeparator = ([^\t\f\r\n\ \(\)\{\}\[\]\;\,\.\=\>\<\!\~\?\:\+\-\*\/\&\|\^\%\"\']|"#"|"\\")
IdentifierStart = ({LetterOrUnderscore}|"$")
IdentifierPart = ({IdentifierStart}|{Digit}|("\\"{EscapedSourceCharacter}))
LineTerminator = (\n)
WhiteSpace = ([ \t\f])
CharLiteral = ([\']({AnyCharacterButApostropheOrBackSlash}|{Escape})*[\'])
UnclosedCharLiteral = ([\'][^\'\n]*)
ErrorCharLiteral = ({UnclosedCharLiteral}[\'])
MLCBegin = "/*"
MLCEnd = "*/"
DocCommentBegin = "/**"
LineCommentBegin = "//"
DigitOrUnderscore = ({Digit}|[_])
DigitsAndUnderscoresEnd = ({DigitOrUnderscore}*{Digit})
IntegerHelper = (({NonzeroDigit}{DigitsAndUnderscoresEnd}?)|"0")
IntegerLiteral = ({IntegerHelper}[lL]?)
BinaryDigitOrUnderscore = ({BinaryDigit}|[_])
BinaryDigitsAndUnderscores = ({BinaryDigit}({BinaryDigitOrUnderscore}*{BinaryDigit})?)
BinaryLiteral = ("0"[bB]{BinaryDigitsAndUnderscores})
HexDigitOrUnderscore = ({HexDigit}|[_])
HexDigitsAndUnderscores = ({HexDigit}({HexDigitOrUnderscore}*{HexDigit})?)
OctalDigitOrUnderscore = ({OctalDigit}|[_])
OctalDigitsAndUnderscoresEnd= ({OctalDigitOrUnderscore}*{OctalDigit})
HexHelper = ("0"(([xX]{HexDigitsAndUnderscores})|({OctalDigitsAndUnderscoresEnd})))
HexLiteral = ({HexHelper}[lL]?)
FloatHelper1 = ([fFdD]?)
FloatHelper2 = ([eE][+-]?{Digit}+{FloatHelper1})
FloatLiteral1 = ({Digit}+"."({FloatHelper1}|{FloatHelper2}|{Digit}+({FloatHelper1}|{FloatHelper2})))
FloatLiteral2 = ("."{Digit}+({FloatHelper1}|{FloatHelper2}))
FloatLiteral3 = ({Digit}+{FloatHelper2})
FloatLiteral = ({FloatLiteral1}|{FloatLiteral2}|{FloatLiteral3}|({Digit}+[fFdD]))
ErrorNumberFormat = (({IntegerLiteral}|{HexLiteral}|{FloatLiteral}){NonSeparator}+)
BooleanLiteral = ("true"|"false")
Regex = ([~]?"/"([^\*\\/]|\\.)([^/\\]|\\.)*"/")
Separator = ([\(\)\{\}\[\]])
Separator2 = ([\;,.])
NonAssignmentOperator = ("+"|"-"|"<="|"^"|"++"|"<"|"*"|">="|"%"|"--"|">"|"/"|"!="|"?"|">>"|"!"|"&"|"=="|":"|">>"|"~"|"|"|"&&"|">>>")
AssignmentOperator = ("="|"-="|"*="|"/="|"|="|"&="|"^="|"+="|"%="|"<<="|">>="|">>>=")
GroovyOperator = ("=~")
Operator = ({NonAssignmentOperator}|{AssignmentOperator}|{GroovyOperator})
CurrentBlockTag = ("author"|"deprecated"|"exception"|"param"|"return"|"see"|"serial"|"serialData"|"serialField"|"since"|"throws"|"version")
ProposedBlockTag = ("category"|"example"|"tutorial"|"index"|"exclude"|"todo"|"internal"|"obsolete"|"threadsafety")
BlockTag = ({CurrentBlockTag}|{ProposedBlockTag})
InlineTag = ("code"|"docRoot"|"inheritDoc"|"link"|"linkplain"|"literal"|"value")
Identifier = ({IdentifierStart}{IdentifierPart}*)
ErrorIdentifier = ({NonSeparator}+)
// Variables in strings
VariableStart = ([\$])
BracedVariable = ({VariableStart}\{[^\}]+\})
UnbracedVariable = ({VariableStart}{Identifier})
Variable = ({BracedVariable}|{UnbracedVariable})
Annotation = ("@"{Identifier}?)
URLGenDelim = ([:\/\?#\[\]@])
URLSubDelim = ([\!\$&'\(\)\*\+,;=])
URLUnreserved = ({LetterOrUnderscore}|{Digit}|[\-\.\~])
URLCharacter = ({URLGenDelim}|{URLSubDelim}|{URLUnreserved}|[%])
URLCharacters = ({URLCharacter}*)
URLEndCharacter = ([\/\$]|{Letter}|{Digit})
URL = (((https?|f(tp|ile))"://"|"www.")({URLCharacters}{URLEndCharacter})?)
%state MLC
%state DOCCOMMENT
%state MULTILINE_STRING_DOUBLE
%state MULTILINE_STRING_SINGLE
%state STRING_DOUBLE
%%