org.fife.ui.rsyntaxtextarea.modes.DTokenMaker.flex Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of rsyntaxtextarea Show documentation
Show all versions of rsyntaxtextarea Show documentation
RSyntaxTextArea is the syntax highlighting text editor for Swing applications. Features include syntax highlighting for 40+ languages, code folding, code completion, regex find and replace, macros, code templates, undo/redo, line numbering and bracket matching.
/*
* 09/08/2014
*
* DTokenMaker.java - Scanner for the D 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 D 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
DTokenMaker.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 1.0
*
*/
%%
%public
%class DTokenMaker
%extends AbstractJFlexCTokenMaker
%unicode
%type org.fife.ui.rsyntaxtextarea.Token
%{
/**
* Token type specific to DTokenMaker; this signals that the user is in
* a nestable multi-line comment. The nested depth is embedded in the
* actual end token type.
*/
private static final int INTERNAL_IN_NESTABLE_MLC = -(1<<11);
/**
* When in a (possibly) nested MLC, this is the current nested depth.
*/
private int nestedMlcDepth;
/**
* Constructor. This must be here because JFlex does not generate a
* no-parameter constructor.
*/
public DTokenMaker() {
}
/**
* Adds the token specified to the current linked list of tokens as an
* "end token;" that is, at zzMarkedPos.
*
* @param tokenType The token's type.
*/
private void addEndToken(int tokenType) {
addToken(zzMarkedPos,zzMarkedPos, tokenType);
}
private void addNestedMlcEndToken() {
addEndToken(INTERNAL_IN_NESTABLE_MLC - nestedMlcDepth);
}
/**
* 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.
* @see #addHyperlinkToken(int, int, int)
*/
private void addToken(int start, int end, int tokenType) {
int so = start + offsetShift;
addToken(zzBuffer, start,end, tokenType, so, false);
}
/**
* 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.
* @param hyperlink Whether this token is a hyperlink.
*/
@Override
public void addToken(char[] array, int start, int end, int tokenType,
int startOffset, boolean hyperlink) {
super.addToken(array, start,end, tokenType, startOffset, hyperlink);
zzStartRead = zzMarkedPos;
}
@Override
public int getClosestStandardTokenTypeForInternalType(int type) {
switch (type) {
case INTERNAL_IN_NESTABLE_MLC:
return TokenTypes.COMMENT_MULTILINE;
}
return type;
}
/**
* {@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;
nestedMlcDepth = 0;
// Start off in the proper state.
int state = YYINITIAL;
switch (initialTokenType) {
case Token.LITERAL_BACKQUOTE:
state = WYSIWYG_STRING_2;
break;
case Token.LITERAL_STRING_DOUBLE_QUOTE:
state = WYSIWYG_STRING_1;
break;
case Token.COMMENT_MULTILINE:
state = MLC;
break;
case Token.COMMENT_DOCUMENTATION:
state = DOCCOMMENT;
break;
case INTERNAL_IN_NESTABLE_MLC:
state = NESTABLE_MLC;
break;
default:
if (initialTokenType<-1024) {
int main = -(-initialTokenType & 0xffffff00);
switch (main) {
default: // Should never happen
case INTERNAL_IN_NESTABLE_MLC:
state = NESTABLE_MLC;
break;
}
nestedMlcDepth = -initialTokenType&0xff;
}
else {
state = YYINITIAL;
}
}
start = text.offset;
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.
* @exception IOException if any I/O-Error occurs.
*/
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(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 = ([^\\'])
AnyCharacterButDoubleQuoteOrBackSlash = ([^\\\"\n])
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])
StringPostfix = ([cwd])
CharLiteral = ([\']({AnyCharacterButApostropheOrBackSlash}|{Escape})[\']{StringPostfix}?)
UnclosedCharLiteral = ([\'][^\'\n]*)
ErrorCharLiteral = ({UnclosedCharLiteral}[\']{StringPostfix}?)
StringLiteral = ([\"]({AnyCharacterButDoubleQuoteOrBackSlash}|{Escape})*[\"]{StringPostfix}?)
UnclosedStringLiteral = ([\"]([\\].|[^\\\"])*[^\"]?)
HexStringLiteral = ([x]{StringLiteral})
UnclosedHexStringLiteral = ([x]{UnclosedStringLiteral})
ErrorStringLiteral = ({UnclosedStringLiteral}[\"]{StringPostfix}?)
WysiwygStringLiteralStart = ("r"[\"])
WysiwygStringLiteralStart2 = ("`")
MLCBegin = "/*"
MLCEnd = "*/"
DocCommentBegin = "/**"
NestableMLCBegin = "/+"
LineCommentBegin = "//"
LineDocCommentBegin = "///"
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})))
NonFloatSuffix = (([uU][lL]?)|([lL][uU]?))
HexLiteral = ({HexHelper}{NonFloatSuffix}?)
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")
Separator = ([\(\)\{\}\[\]])
Separator2 = ([\;,.])
NonAssignmentOperator = ("+"|"-"|"<="|"^"|"++"|"<"|"*"|">="|"%"|"--"|">"|"/"|"!="|"?"|">>"|"!"|"&"|"=="|":"|">>"|"~"|"|"|"&&"|">>>")
AssignmentOperator = ("="|"-="|"*="|"/="|"|="|"&="|"^="|"+="|"%="|"<<="|">>="|">>>=")
Operator = ({NonAssignmentOperator}|{AssignmentOperator})
Identifier = ({IdentifierStart}{IdentifierPart}*)
ErrorIdentifier = ({NonSeparator}+)
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 NESTABLE_MLC
%state EOL_COMMENT
%state EOL_DOCCOMMENT
%state WYSIWYG_STRING_1
%state WYSIWYG_STRING_2
%%
{
/* Keywords */
"abstract" |
"alias" |
"align" |
"asm" |
"assert" |
"auto" |
"body" |
"break" |
"case" |
"cast" |
"catch" |
"class" |
"const" |
"continue" |
"debug" |
"default" |
"delegate" |
"delete" |
"deprecated" |
"do" |
"else" |
"enum" |
"export" |
"extern" |
"final" |
"finally" |
"for" |
"foreach" |
"foreach_reverse" |
"function" |
"goto" |
"if" |
"immutable" |
"import" |
"in" |
"inout" |
"interface" |
"invariant" |
"is" |
"lazy" |
"macro" |
"mixin" |
"module" |
"new" |
"nothrow" |
"null" |
"out" |
"override" |
"package" |
"pragma" |
"private" |
"protected" |
"public" |
"pure" |
"ref" |
"scope" |
"shared" |
"static" |
"struct" |
"super" |
"switch" |
"synchronized" |
"template" |
"this" |
"throw" |
"try" |
"typedef" |
"typeid" |
"typeof" |
"union" |
"unittest" |
"version" |
"void" |
"volatile" |
"while" |
"with" |
"__FILE__" |
"__MODULE__" |
"__LINE__" |
"__FUNCTION__" |
"__PRETTY_FUNCTION__" |
"__gshared" |
"__traits" |
"__vector" |
"__parameters" { addToken(Token.RESERVED_WORD); }
"return" { addToken(Token.RESERVED_WORD_2); }
/* Data types. */
"string" |
"wstring" |
"dstring" |
"size_t" |
"ptrdiff_t" |
"bool" |
"byte" |
"cdouble" |
"cent" |
"cfloat" |
"char" |
"creal" |
"dchar" |
"double" |
"float" |
"idouble" |
"ifloat" |
"ireal" |
"int" |
"long" |
"real" |
"short" |
"ubyte" |
"ucent" |
"uint" |
"ulong" |
"ushort" |
"wchar" { addToken(Token.DATA_TYPE); }
/* Booleans. */
{BooleanLiteral} { addToken(Token.LITERAL_BOOLEAN); }
/* Standard library (TODO) */
{LineTerminator} { addNullToken(); return firstToken; }
{Identifier} { addToken(Token.IDENTIFIER); }
{WhiteSpace}+ { addToken(Token.WHITESPACE); }
/* String/Character literals. */
{CharLiteral} { addToken(Token.LITERAL_CHAR); }
{UnclosedCharLiteral} { 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); }
{HexStringLiteral} { addToken(Token.LITERAL_STRING_DOUBLE_QUOTE); }
{UnclosedHexStringLiteral} { addToken(Token.ERROR_STRING_DOUBLE); addNullToken(); return firstToken; }
{WysiwygStringLiteralStart} { addToken(Token.LITERAL_STRING_DOUBLE_QUOTE); yybegin(WYSIWYG_STRING_1); }
{WysiwygStringLiteralStart2} { addToken(Token.LITERAL_BACKQUOTE); yybegin(WYSIWYG_STRING_2); }
/* Comment literals. */
"/**/" { addToken(Token.COMMENT_MULTILINE); }
{MLCBegin} { start = zzMarkedPos-2; yybegin(MLC); }
{DocCommentBegin} { start = zzMarkedPos-3; yybegin(DOCCOMMENT); }
{NestableMLCBegin} { start = zzMarkedPos-2; nestedMlcDepth = 1; yybegin(NESTABLE_MLC); }
{LineCommentBegin} { start = zzMarkedPos-2; yybegin(EOL_COMMENT); }
{LineDocCommentBegin} { start = zzMarkedPos-3; yybegin(EOL_DOCCOMMENT); }
/* Annotations. */
{Annotation} { addToken(Token.ANNOTATION); }
/* Separators. */
{Separator} { addToken(Token.SEPARATOR); }
{Separator2} { addToken(Token.IDENTIFIER); }
/* Operators. */
{Operator} { addToken(Token.OPERATOR); }
/* Numbers */
{IntegerLiteral} { addToken(Token.LITERAL_NUMBER_DECIMAL_INT); }
{BinaryLiteral} { addToken(Token.LITERAL_NUMBER_DECIMAL_INT); }
{HexLiteral} { addToken(Token.LITERAL_NUMBER_HEXADECIMAL); }
{FloatLiteral} { addToken(Token.LITERAL_NUMBER_FLOAT); }
{ErrorNumberFormat} { addToken(Token.ERROR_NUMBER_FORMAT); }
{ErrorIdentifier} { addToken(Token.ERROR_IDENTIFIER); }
/* Ended with a line not in a string or comment. */
<> { addNullToken(); return firstToken; }
/* Catch any other (unhandled) characters and flag them as identifiers. */
. { 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] {}
{MLCEnd} { yybegin(YYINITIAL); addToken(start,zzStartRead+1, Token.COMMENT_MULTILINE); }
\* {}
\n |
<> { addToken(start,zzStartRead-1, Token.COMMENT_MULTILINE); return firstToken; }
}
{
[^hwf\n\*]+ {}
{URL} { int temp=zzStartRead; addToken(start,zzStartRead-1, Token.COMMENT_DOCUMENTATION); addHyperlinkToken(temp,zzMarkedPos-1, Token.COMMENT_DOCUMENTATION); start = zzMarkedPos; }
[hwf] {}
{MLCEnd} { yybegin(YYINITIAL); addToken(start,zzStartRead+1, Token.COMMENT_DOCUMENTATION); }
\* {}
\n |
<> { yybegin(YYINITIAL); addToken(start,zzEndRead, Token.COMMENT_DOCUMENTATION); return firstToken; }
}
{
[^hwf\n\+\/]+ {}
{URL} { int temp=zzStartRead; addToken(start,zzStartRead-1, Token.COMMENT_MULTILINE); addHyperlinkToken(temp,zzMarkedPos-1, Token.COMMENT_MULTILINE); start = zzMarkedPos; }
[hwf] {}
{NestableMLCBegin} { nestedMlcDepth++; }
"/" {}
"+/" {
System.out.println("... " + nestedMlcDepth);
if (--nestedMlcDepth==0) {
addToken(start,zzStartRead+1, Token.COMMENT_MULTILINE); yybegin(YYINITIAL);
}
}
\+ {}
\n |
<> { addToken(start,zzStartRead-1, Token.COMMENT_MULTILINE); addNestedMlcEndToken(); 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; }
}
{
[^hwf\n]+ {}
{URL} { int temp=zzStartRead; addToken(start,zzStartRead-1, Token.COMMENT_DOCUMENTATION); addHyperlinkToken(temp,zzMarkedPos-1, Token.COMMENT_DOCUMENTATION); start = zzMarkedPos; }
[hwf] {}
\n |
<> { addToken(start,zzStartRead-1, Token.COMMENT_DOCUMENTATION); addNullToken(); return firstToken; }
}
{
[^\"]+ { addToken(Token.LITERAL_STRING_DOUBLE_QUOTE); }
\" { addToken(Token.LITERAL_STRING_DOUBLE_QUOTE); yybegin(YYINITIAL); }
<> {
if (firstToken==null) {
addToken(Token.LITERAL_STRING_DOUBLE_QUOTE);
}
return firstToken;
}
}
{
[^\`]+ { addToken(Token.LITERAL_BACKQUOTE); }
\` { addToken(Token.LITERAL_BACKQUOTE); yybegin(YYINITIAL); }
<> {
if (firstToken==null) {
addToken(Token.LITERAL_BACKQUOTE);
}
return firstToken;
}
}