org.fife.ui.rsyntaxtextarea.modes.CTokenMaker.flex Maven / Gradle / Ivy
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/*
* 11/13/2004
*
* CTokenMaker.java - An object that can take a chunk of text and
* return a linked list of tokens representing it in the C 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 C programming language.
*
* 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
CTokenMaker.java file will contain two
* definitions of both zzRefill and yyreset.
* 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.
* - You should also change the declaration/definition of zzBuffer to NOT
* be initialized. This is a needless memory allocation for us since we
* will be pointing the array somewhere else anyway.
* - You should NOT call
yylex() on the generated scanner
* directly; rather, you should use getTokenList as you would
* with any other TokenMaker instance.
*
*
* @author Robert Futrell
* @version 0.6
*
*/
%%
%public
%class CTokenMaker
%extends AbstractJFlexCTokenMaker
%unicode
%type org.fife.ui.rsyntaxtextarea.Token
%{
/**
* Constructor. This must be here because JFlex does not generate a
* no-parameter constructor.
*/
public CTokenMaker() {
super();
}
/**
* Adds the token specified to the current linked list of tokens.
*
* @param tokenType The token's type.
* @see #addToken(int, int, int)
*/
private void addHyperlinkToken(int start, int end, int tokenType) {
int so = start + offsetShift;
addToken(zzBuffer, start,end, tokenType, so, true);
}
/**
* Adds the token specified to the current linked list of tokens.
*
* @param tokenType The token's type.
*/
private void addToken(int tokenType) {
addToken(zzStartRead, zzMarkedPos-1, tokenType);
}
/**
* Adds the token specified to the current linked list of tokens.
*
* @param tokenType The token's type.
*/
private void addToken(int start, int end, int tokenType) {
int so = start + offsetShift;
addToken(zzBuffer, start,end, tokenType, so);
}
/**
* Adds the token specified to the current linked list of tokens.
*
* @param array The character array.
* @param start The starting offset in the array.
* @param end The ending offset in the array.
* @param tokenType The token's type.
* @param startOffset The offset in the document at which this token
* occurs.
*/
@Override
public void addToken(char[] array, int start, int end, int tokenType, int startOffset) {
super.addToken(array, start,end, tokenType, startOffset);
zzStartRead = zzMarkedPos;
}
/**
* {@inheritDoc}
*/
@Override
public String[] getLineCommentStartAndEnd(int languageIndex) {
return new String[] { "//", null };
}
/**
* Returns the first token in the linked list of tokens generated
* from 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.COMMENT_MULTILINE:
state = MLC;
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();
}
}
/**
* 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}|[_])
Digit = [0-9]
HexDigit = {Digit}|[A-Fa-f]
OctalDigit = [0-7]
Exponent = [eE][+-]?{Digit}+
PreprocessorWord = define|elif|else|endif|error|if|ifdef|ifndef|include|line|pragma|undef
Trigraph = ("??="|"??("|"??)"|"??/"|"??'"|"??<"|"??>"|"??!"|"??-")
OctEscape1 = ([\\]{OctalDigit})
OctEscape2 = ([\\]{OctalDigit}{OctalDigit})
OctEscape3 = ([\\][0-3]{OctalDigit}{OctalDigit})
OctEscape = ({OctEscape1}|{OctEscape2}|{OctEscape3})
HexEscape = ([\\][xX]{HexDigit}{HexDigit})
AnyChrChr = ([^\'\n\\])
Escape = ([\\]([abfnrtv\'\"\?\\0e]))
UnclosedCharLiteral = ([\']({Escape}|{OctEscape}|{HexEscape}|{Trigraph}|{AnyChrChr}))
CharLiteral = ({UnclosedCharLiteral}[\'])
ErrorUnclosedCharLiteral = ([\'][^\'\n]*)
ErrorCharLiteral = (([\'][\'])|{ErrorUnclosedCharLiteral}[\'])
AnyStrChr = ([^\"\n\\])
FalseTrigraph = (("?"(("?")*)[^\=\(\)\/\'\<\>\!\-\\\?\"\n])|("?"[\=\(\)\/\'\<\>\!\-]))
StringLiteral = ([\"]((((("?")*)({Escape}|{OctEscape}|{HexEscape}|{Trigraph}))|{FalseTrigraph}|{AnyStrChr})*)(("?")*)[\"])
UnclosedStringLiteral = ([\"]([\\].|[^\\\"])*[^\"]?)
ErrorStringLiteral = ({UnclosedStringLiteral}[\"])
LineTerminator = \n
WhiteSpace = [ \t\f]
MLCBegin = "/*"
MLCEnd = "*/"
LineCommentBegin = "//"
NonFloatSuffix = (([uU][lL]?)|([lL][uU]?))
IntegerLiteral = ({Digit}+{Exponent}?{NonFloatSuffix}?)
HexLiteral = ("0"[xX]{HexDigit}+{NonFloatSuffix}?)
FloatLiteral = ((({Digit}*[\.]{Digit}+)|({Digit}+[\.]{Digit}*)){Exponent}?[fFlL]?)
ErrorNumberFormat = (({IntegerLiteral}|{HexLiteral}|{FloatLiteral}){NonSeparator}+)
NonSeparator = ([^\t\f\r\n\ \(\)\{\}\[\]\;\,\.\=\>\<\!\~\?\:\+\-\*\/\&\|\^\%\"\']|"#")
Identifier = ({LetterOrUnderscore}({LetterOrUnderscore}|{Digit}|[$])*)
ErrorIdentifier = ({NonSeparator}+)
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 EOL_COMMENT
%%
{
/* Keywords */
"auto" |
"break" |
"case" |
"const" |
"continue" |
"default" |
"do" |
"else" |
"enum" |
"extern" |
"for" |
"goto" |
"if" |
"register" |
"return" |
"sizeof" |
"static" |
"struct" |
"switch" |
"typedef" |
"union" |
"volatile" |
"while" { addToken(Token.RESERVED_WORD); }
/* Data types. */
"char" |
"div_t" |
"double" |
"float" |
"int" |
"ldiv_t" |
"long" |
"short" |
"signed" |
"size_t" |
"unsigned" |
"void" |
"wchar_t" { addToken(Token.DATA_TYPE); }
/* Standard functions */
"abort" |
"abs" |
"acos" |
"asctime" |
"asin" |
"assert" |
"atan2" |
"atan" |
"atexit" |
"atof" |
"atoi" |
"atol" |
"bsearch" |
"btowc" |
"calloc" |
"ceil" |
"clearerr" |
"clock" |
"cosh" |
"cos" |
"ctime" |
"difftime" |
"div" |
"errno" |
"exit" |
"exp" |
"fabs" |
"fclose" |
"feof" |
"ferror" |
"fflush" |
"fgetc" |
"fgetpos" |
"fgetwc" |
"fgets" |
"fgetws" |
"floor" |
"fmod" |
"fopen" |
"fprintf" |
"fputc" |
"fputs" |
"fputwc" |
"fputws" |
"fread" |
"free" |
"freopen" |
"frexp" |
"fscanf" |
"fseek" |
"fsetpos" |
"ftell" |
"fwprintf" |
"fwrite" |
"fwscanf" |
"getchar" |
"getc" |
"getenv" |
"gets" |
"getwc" |
"getwchar" |
"gmtime" |
"isalnum" |
"isalpha" |
"iscntrl" |
"isdigit" |
"isgraph" |
"islower" |
"isprint" |
"ispunct" |
"isspace" |
"isupper" |
"isxdigit" |
"labs" |
"ldexp" |
"ldiv" |
"localeconv" |
"localtime" |
"log10" |
"log" |
"longjmp" |
"malloc" |
"mblen" |
"mbrlen" |
"mbrtowc" |
"mbsinit" |
"mbsrtowcs" |
"mbstowcs" |
"mbtowc" |
"memchr" |
"memcmp" |
"memcpy" |
"memmove" |
"memset" |
"mktime" |
"modf" |
"offsetof" |
"perror" |
"pow" |
"printf" |
"putchar" |
"putc" |
"puts" |
"putwc" |
"putwchar" |
"qsort" |
"raise" |
"rand" |
"realloc" |
"remove" |
"rename" |
"rewind" |
"scanf" |
"setbuf" |
"setjmp" |
"setlocale" |
"setvbuf" |
"setvbuf" |
"signal" |
"sinh" |
"sin" |
"sprintf" |
"sqrt" |
"srand" |
"sscanf" |
"strcat" |
"strchr" |
"strcmp" |
"strcmp" |
"strcoll" |
"strcpy" |
"strcspn" |
"strerror" |
"strftime" |
"strlen" |
"strncat" |
"strncmp" |
"strncpy" |
"strpbrk" |
"strrchr" |
"strspn" |
"strstr" |
"strtod" |
"strtok" |
"strtol" |
"strtoul" |
"strxfrm" |
"swprintf" |
"swscanf" |
"system" |
"tanh" |
"tan" |
"time" |
"tmpfile" |
"tmpnam" |
"tolower" |
"toupper" |
"ungetc" |
"ungetwc" |
"va_arg" |
"va_end" |
"va_start" |
"vfprintf" |
"vfwprintf" |
"vprintf" |
"vsprintf" |
"vswprintf" |
"vwprintf" |
"wcrtomb" |
"wcscat" |
"wcschr" |
"wcscmp" |
"wcscoll" |
"wcscpy" |
"wcscspn" |
"wcsftime" |
"wcslen" |
"wcsncat" |
"wcsncmp" |
"wcsncpy" |
"wcspbrk" |
"wcsrchr" |
"wcsrtombs" |
"wcsspn" |
"wcsstr" |
"wcstod" |
"wcstok" |
"wcstol" |
"wcstombs" |
"wcstoul" |
"wcsxfrm" |
"wctob" |
"wctomb" |
"wmemchr" |
"wmemcmp" |
"wmemcpy" |
"wmemmove" |
"wmemset" |
"wprintf" |
"wscanf" { addToken(Token.FUNCTION); }
/* Standard-defined macros. */
"__DATE__" |
"__TIME__" |
"__FILE__" |
"__LINE__" |
"__STDC__" { addToken(Token.PREPROCESSOR); }
{LineTerminator} { addNullToken(); return firstToken; }
{Identifier} { addToken(Token.IDENTIFIER); }
{WhiteSpace}+ { addToken(Token.WHITESPACE); }
/* Preprocessor directives */
"#"{WhiteSpace}*{PreprocessorWord} { addToken(Token.PREPROCESSOR); }
/* String/Character Literals. */
{CharLiteral} { addToken(Token.LITERAL_CHAR); }
{UnclosedCharLiteral} { addToken(Token.ERROR_CHAR); /*addNullToken(); return firstToken;*/ }
{ErrorUnclosedCharLiteral} { addToken(Token.ERROR_CHAR); addNullToken(); return firstToken; }
{ErrorCharLiteral} { addToken(Token.ERROR_CHAR); }
{StringLiteral} { addToken(Token.LITERAL_STRING_DOUBLE_QUOTE); }
{UnclosedStringLiteral} { addToken(Token.ERROR_STRING_DOUBLE); addNullToken(); return firstToken; }
{ErrorStringLiteral} { addToken(Token.ERROR_STRING_DOUBLE); }
/* Comment Literals. */
{MLCBegin} { start = zzMarkedPos-2; yybegin(MLC); }
{LineCommentBegin} { start = zzMarkedPos-2; yybegin(EOL_COMMENT); }
/* Separators. */
"(" |
")" |
"[" |
"]" |
"{" |
"}" { addToken(Token.SEPARATOR); }
/* Operators. */
{Trigraph} |
"=" |
"+" |
"-" |
"*" |
"/" |
"%" |
"~" |
"<" |
">" |
"<<" |
">>" |
"==" |
"+=" |
"-=" |
"*=" |
"/=" |
"%=" |
">>=" |
"<<=" |
"^" |
"&" |
"&&" |
"|" |
"||" |
"?" |
":" |
"," |
"!" |
"++" |
"--" |
"." |
"," { addToken(Token.OPERATOR); }
/* Numbers */
{IntegerLiteral} { addToken(Token.LITERAL_NUMBER_DECIMAL_INT); }
{HexLiteral} { addToken(Token.LITERAL_NUMBER_HEXADECIMAL); }
{FloatLiteral} { addToken(Token.LITERAL_NUMBER_FLOAT); }
{ErrorNumberFormat} { addToken(Token.ERROR_NUMBER_FORMAT); }
/* Some lines will end in '\' to wrap an expression. */
"\\" { addToken(Token.IDENTIFIER); }
{ErrorIdentifier} { addToken(Token.ERROR_IDENTIFIER); }
/* Other punctuation, we'll highlight it as "identifiers." */
";" { addToken(Token.IDENTIFIER); }
/* Ended with a line not in a string or comment. */
<> { addNullToken(); return firstToken; }
/* Catch any other (unhandled) characters and flag them as bad. */
. { addToken(Token.ERROR_IDENTIFIER); }
}
{
[^hwf\n\*]+ {}
{URL} { int temp=zzStartRead; addToken(start,zzStartRead-1, Token.COMMENT_MULTILINE); addHyperlinkToken(temp,zzMarkedPos-1, Token.COMMENT_MULTILINE); start = zzMarkedPos; }
[hwf] {}
\n { addToken(start,zzStartRead-1, Token.COMMENT_MULTILINE); return firstToken; }
{MLCEnd} { yybegin(YYINITIAL); addToken(start,zzStartRead+1, Token.COMMENT_MULTILINE); }
\* {}
<> { addToken(start,zzStartRead-1, Token.COMMENT_MULTILINE); return firstToken; }
}
{
[^hwf\n]+ {}
{URL} { int temp=zzStartRead; addToken(start,zzStartRead-1, Token.COMMENT_EOL); addHyperlinkToken(temp,zzMarkedPos-1, Token.COMMENT_EOL); start = zzMarkedPos; }
[hwf] {}
\n { addToken(start,zzStartRead-1, Token.COMMENT_EOL); addNullToken(); return firstToken; }
<> { addToken(start,zzStartRead-1, Token.COMMENT_EOL); addNullToken(); return firstToken; }
}