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ByteEdit/src/org/fife/ui/rsyntaxtextarea/modes/JavaScriptTokenMaker.flex
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/*
* 02/05/2012
*
* JavaScriptTokenMaker.java - Parses a document into JavaScript tokens.
*
* 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 java.util.Stack;
import org.fife.ui.rsyntaxtextarea.*;
/**
* Scanner for JavaScript files. Its states could be simplified, but are
* kept the way they are to keep a degree of similarity (i.e. copy/paste)
* between it and HTML/JSP/PHPTokenMaker. This should cause no difference in
* performance.<p>
*
* This implementation was created using
* <a href="http://www.jflex.de/">JFlex</a> 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 <code>AbstractTokenMaker</code>, 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.<p>
*
* The actual algorithm generated for scanning has, of course, not been
* modified.<p>
*
* If you wish to regenerate this file yourself, keep in mind the following:
* <ul>
* <li>The generated <code>JavaScriptTokenMaker.java</code> file will contain two
* definitions of both <code>zzRefill</code> and <code>yyreset</code>.
* 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.</li>
* <li>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.</li>
* <li>You should NOT call <code>yylex()</code> on the generated scanner
* directly; rather, you should use <code>getTokenList</code> as you would
* with any other <code>TokenMaker</code> instance.</li>
* </ul>
*
* @author Robert Futrell
* @version 0.9
*/
%%
%public
%class JavaScriptTokenMaker
%extends AbstractJFlexCTokenMaker
%unicode
%type org.fife.ui.rsyntaxtextarea.Token
%{
/**
* Token type specifying we're in a JavaScript multiline comment.
*/
private static final int INTERNAL_IN_JS_MLC = -8;
/**
* Token type specifying we're in a JavaScript documentation comment.
*/
private static final int INTERNAL_IN_JS_COMMENT_DOCUMENTATION = -9;
/**
* Token type specifying we're in an invalid multi-line JS string.
*/
private static final int INTERNAL_IN_JS_STRING_INVALID = -10;
/**
* Token type specifying we're in a valid multi-line JS string.
*/
private static final int INTERNAL_IN_JS_STRING_VALID = -11;
/**
* Token type specifying we're in an invalid multi-line JS single-quoted string.
*/
private static final int INTERNAL_IN_JS_CHAR_INVALID = -12;
/**
* Token type specifying we're in a valid multi-line JS single-quoted string.
*/
private static final int INTERNAL_IN_JS_CHAR_VALID = -13;
private static final int INTERNAL_E4X = -14;
private static final int INTERNAL_E4X_INTAG = -15;
private static final int INTERNAL_E4X_MARKUP_PROCESSING_INSTRUCTION = -16;
private static final int INTERNAL_IN_E4X_COMMENT = -17;
private static final int INTERNAL_E4X_DTD = -18;
private static final int INTERNAL_E4X_DTD_INTERNAL = -19;
private static final int INTERNAL_E4X_ATTR_SINGLE = -20;
private static final int INTERNAL_E4X_ATTR_DOUBLE = -21;
private static final int INTERNAL_E4X_MARKUP_CDATA = -22;
/**
* Token type specifying we're in a valid multi-line template literal.
*/
private static final int INTERNAL_IN_JS_TEMPLATE_LITERAL_VALID = -23;
/**
* Token type specifying we're in an invalid multi-line template literal.
*/
private static final int INTERNAL_IN_JS_TEMPLATE_LITERAL_INVALID = -24;
/**
* When in the JS_STRING state, whether the current string is valid.
*/
private boolean validJSString;
/**
* Whether we're in an internal DTD. Only valid if in an e4x DTD.
*/
private boolean e4x_inInternalDtd;
/**
* The previous e4x state. Only valid if in an e4x state.
*/
private int e4x_prevState;
/**
* The version of JavaScript being highlighted.
*/
private static String jsVersion;
/**
* Whether e4x is being highlighted.
*/
private static boolean e4xSupported;
/**
* Language state set on JS tokens. Must be 0.
*/
private static final int LANG_INDEX_DEFAULT = 0;
/**
* Language state set on E4X tokens.
*/
private static final int LANG_INDEX_E4X = 1;
private Stack<Boolean> varDepths;
/**
* Constructor. This must be here because JFlex does not generate a
* no-parameter constructor.
*/
public JavaScriptTokenMaker() {
super();
}
static {
jsVersion = "1.7"; // Many folks using JS tend to be bleeding edge
e4xSupported = true;
}
/**
* Adds the token specified to the current linked list of tokens as an
* "end token;" that is, at <code>zzMarkedPos</code>.
*
* @param tokenType The token's type.
*/
private void addEndToken(int tokenType) {
addToken(zzMarkedPos,zzMarkedPos, tokenType);
}
/**
* 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;
}
/**
* Returns the closest {@link TokenTypes} "standard" token type for a given
* "internal" token type (e.g. one whose value is <code>&lt; 0</code>).
*/
@Override
public int getClosestStandardTokenTypeForInternalType(int type) {
switch (type) {
case INTERNAL_IN_JS_MLC:
return TokenTypes.COMMENT_MULTILINE;
case INTERNAL_IN_JS_COMMENT_DOCUMENTATION:
return TokenTypes.COMMENT_DOCUMENTATION;
case INTERNAL_IN_JS_STRING_INVALID:
case INTERNAL_IN_JS_STRING_VALID:
case INTERNAL_IN_JS_CHAR_INVALID:
case INTERNAL_IN_JS_CHAR_VALID:
return TokenTypes.LITERAL_STRING_DOUBLE_QUOTE;
case INTERNAL_IN_JS_TEMPLATE_LITERAL_VALID:
return TokenTypes.LITERAL_BACKQUOTE;
case INTERNAL_IN_JS_TEMPLATE_LITERAL_INVALID:
return TokenTypes.ERROR_STRING_DOUBLE;
}
return type;
}
/**
* Returns the JavaScript version being highlighted.
*
* @return Supported JavaScript version.
* @see #isJavaScriptCompatible(String)
*/
public static String getJavaScriptVersion() {
return jsVersion;
}
/**
* {@inheritDoc}
*/
@Override
public String[] getLineCommentStartAndEnd(int languageIndex) {
return new String[] { "//", null };
}
/**
* Returns the first token in the linked list of tokens generated
* from <code>text</code>. 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
* <code>text</code> starts.
* @return The first <code>Token</code> in a linked list representing
* the syntax highlighted text.
*/
@Override
public Token getTokenList(Segment text, int initialTokenType, int startOffset) {
resetTokenList();
this.offsetShift = -text.offset + startOffset;
validJSString = true;
e4x_prevState = YYINITIAL;
e4x_inInternalDtd = false;
int languageIndex = LANG_INDEX_DEFAULT;
// Start off in the proper state.
int state = YYINITIAL;
switch (initialTokenType) {
case INTERNAL_IN_JS_MLC:
state = JS_MLC;
break;
case INTERNAL_IN_JS_COMMENT_DOCUMENTATION:
state = JS_DOCCOMMENT;
start = text.offset;
break;
case INTERNAL_IN_JS_STRING_INVALID:
state = JS_STRING;
validJSString = false;
break;
case INTERNAL_IN_JS_STRING_VALID:
state = JS_STRING;
break;
case INTERNAL_IN_JS_CHAR_INVALID:
state = JS_CHAR;
validJSString = false;
break;
case INTERNAL_IN_JS_CHAR_VALID:
state = JS_CHAR;
break;
case INTERNAL_E4X:
state = E4X;
languageIndex = LANG_INDEX_E4X;
break;
case INTERNAL_E4X_INTAG:
state = E4X_INTAG;
languageIndex = LANG_INDEX_E4X;
break;
case INTERNAL_E4X_MARKUP_PROCESSING_INSTRUCTION:
state = E4X_PI;
languageIndex = LANG_INDEX_E4X;
break;
case INTERNAL_E4X_DTD:
state = E4X_DTD;
languageIndex = LANG_INDEX_E4X;
break;
case INTERNAL_E4X_DTD_INTERNAL:
state = E4X_DTD;
e4x_inInternalDtd = true;
languageIndex = LANG_INDEX_E4X;
break;
case INTERNAL_E4X_ATTR_SINGLE:
state = E4X_INATTR_SINGLE;
languageIndex = LANG_INDEX_E4X;
break;
case INTERNAL_E4X_ATTR_DOUBLE:
state = E4X_INATTR_DOUBLE;
languageIndex = LANG_INDEX_E4X;
break;
case INTERNAL_E4X_MARKUP_CDATA:
state = E4X_CDATA;
languageIndex = LANG_INDEX_E4X;
break;
case INTERNAL_IN_JS_TEMPLATE_LITERAL_VALID:
state = JS_TEMPLATE_LITERAL;
validJSString = true;
break;
case INTERNAL_IN_JS_TEMPLATE_LITERAL_INVALID:
state = JS_TEMPLATE_LITERAL;
validJSString = false;
break;
default:
if (initialTokenType<-1024) { // INTERNAL_IN_E4X_COMMENT - prevState
int main = -(-initialTokenType & 0xffffff00);
switch (main) {
default: // Should never happen
case INTERNAL_IN_E4X_COMMENT:
state = E4X_COMMENT;
break;
}
e4x_prevState = -initialTokenType&0xff;
languageIndex = LANG_INDEX_E4X;
}
else { // Shouldn't happen
state = Token.NULL;
}
}
setLanguageIndex(languageIndex);
start = text.offset;
s = text;
try {
yyreset(zzReader);
yybegin(state);
return yylex();
} catch (IOException ioe) {
ioe.printStackTrace();
return new TokenImpl();
}
}
/**
* Returns whether e4x is being highlighted.
*
* @return Whether e4x is being highlighted.
* @see #setE4xSupported(boolean)
*/
public static boolean isE4xSupported() {
return e4xSupported;
}
/**
* Returns whether features for a specific JS version should be honored
* while highlighting.
*
* @param version JavaScript version required
* @return Whether the JavaScript version is the same or greater than
* version required.
*/
public static boolean isJavaScriptCompatible(String version) {
return jsVersion.compareTo(version) >= 0;
}
/**
* Sets whether e4x should be highlighted. A repaint should be forced on
* all <code>RSyntaxTextArea</code>s editing JavaScript if this property
* is changed to see the difference.
*
* @param supported Whether e4x should be highlighted.
* @see #isE4xSupported()
*/
public static void setE4xSupported(boolean supported) {
e4xSupported = supported;
}
/**
* Set the supported JavaScript version because some keywords were
* introduced on or after this version.
*
* @param javaScriptVersion The version of JavaScript to support, such as
* "<code>1.5</code>" or "<code>1.6</code>".
* @see #isJavaScriptCompatible(String)
* @see #getJavaScriptVersion()
*/
public static void setJavaScriptVersion(String javaScriptVersion) {
jsVersion = javaScriptVersion;
}
/**
* Refills the input buffer.
*
* @return <code>true</code> if EOF was reached, otherwise
* <code>false</code>.
*/
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
* <b>cannot</b> be reused (internal buffer is discarded and lost).
* Lexical state is set to <tt>YY_INITIAL</tt>.
*
* @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;
}
%}
Whitespace = ([ \t\f]+)
LineTerminator = ([\n])
Letter = [A-Za-z]
NonzeroDigit = [1-9]
Digit = ("0"|{NonzeroDigit})
HexDigit = ({Digit}|[A-Fa-f])
OctalDigit = ([0-7])
LetterOrDigit = ({Letter}|{Digit})
EscapedSourceCharacter = ("u"{HexDigit}{HexDigit}{HexDigit}{HexDigit})
NonSeparator = ([^\t\f\r\n\ \(\)\{\}\[\]\;\,\.\=\>\<\!\~\?\:\+\-\*\/\&\|\^\%\"\'\`]|"#"|"\\")
IdentifierStart = ({Letter}|"_"|"$")
IdentifierPart = ({IdentifierStart}|{Digit}|("\\"{EscapedSourceCharacter}))
JS_MLCBegin = "/*"
JS_DocCommentBegin = "/**"
JS_MLCEnd = "*/"
JS_LineCommentBegin = "//"
JS_IntegerHelper1 = (({NonzeroDigit}{Digit}*)|"0")
JS_IntegerHelper2 = ("0"(([xX]{HexDigit}+)|({OctalDigit}*)))
JS_IntegerLiteral = ({JS_IntegerHelper1}[lL]?)
JS_HexLiteral = ({JS_IntegerHelper2}[lL]?)
JS_FloatHelper1 = ([fFdD]?)
JS_FloatHelper2 = ([eE][+-]?{Digit}+{JS_FloatHelper1})
JS_FloatLiteral1 = ({Digit}+"."({JS_FloatHelper1}|{JS_FloatHelper2}|{Digit}+({JS_FloatHelper1}|{JS_FloatHelper2})))
JS_FloatLiteral2 = ("."{Digit}+({JS_FloatHelper1}|{JS_FloatHelper2}))
JS_FloatLiteral3 = ({Digit}+{JS_FloatHelper2})
JS_FloatLiteral = ({JS_FloatLiteral1}|{JS_FloatLiteral2}|{JS_FloatLiteral3}|({Digit}+[fFdD]))
JS_ErrorNumberFormat = (({JS_IntegerLiteral}|{JS_HexLiteral}|{JS_FloatLiteral}){NonSeparator}+)
JS_Separator = ([\(\)\{\}\[\]\]])
JS_Separator2 = ([\;,.])
JS_NonAssignmentOperator = ("+"|"-"|"<="|"^"|"++"|"<"|"*"|">="|"%"|"--"|">"|"/"|"!="|"?"|">>"|"!"|"&"|"=="|":"|">>"|"~"|"||"|"&&"|">>>")
JS_AssignmentOperator = ("="|"-="|"*="|"/="|"|="|"&="|"^="|"+="|"%="|"<<="|">>="|">>>=")
JS_Operator = ({JS_NonAssignmentOperator}|{JS_AssignmentOperator})
JS_Identifier = ({IdentifierStart}{IdentifierPart}*)
JS_ErrorIdentifier = ({NonSeparator}+)
JS_Regex = ("/"([^\*\\/]|\\.)([^/\\]|\\.)*"/"[gim]*)
JS_E4xAttribute = ("@"{Letter}{LetterOrDigit}*)
JS_BlockTag = ("abstract"|"access"|"alias"|"augments"|"author"|"borrows"|
"callback"|"classdesc"|"constant"|"constructor"|"constructs"|
"copyright"|"default"|"deprecated"|"desc"|"enum"|"event"|
"example"|"exports"|"external"|"file"|"fires"|"global"|
"ignore"|"inner"|"instance"|"kind"|"lends"|"license"|
"link"|"member"|"memberof"|"method"|"mixes"|"mixin"|"module"|
"name"|"namespace"|"param"|"private"|"property"|"protected"|
"public"|"readonly"|"requires"|"return"|"returns"|"see"|"since"|
"static"|"summary"|"this"|"throws"|"todo"|
"type"|"typedef"|"variation"|"version")
JS_InlineTag = ("link"|"linkplain"|"linkcode"|"tutorial")
JS_TemplateLiteralExprStart = ("${")
e4x_NameStartChar = ([\:A-Z_a-z])
e4x_NameChar = ({e4x_NameStartChar}|[\-\.0-9])
e4x_TagName = ({e4x_NameStartChar}{e4x_NameChar}*)
e4x_Identifier = ([^ \t\n<&;]+)
e4x_EndXml = ([;])
e4x_EntityReference = ([&][^; \t]*[;]?)
e4x_InTagIdentifier = ([^ \t\n\"\'=\/>]+)
e4x_CDataBegin = ("<![CDATA[")
e4x_CDataEnd = ("]]>")
URLGenDelim = ([:\/\?#\[\]@])
URLSubDelim = ([\!\$&'\(\)\*\+,;=])
URLUnreserved = ({LetterOrDigit}|"_"|[\-\.\~])
URLCharacter = ({URLGenDelim}|{URLSubDelim}|{URLUnreserved}|[%])
URLCharacters = ({URLCharacter}*)
URLEndCharacter = ([\/\$]|{LetterOrDigit})
URL = (((https?|f(tp|ile))"://"|"www.")({URLCharacters}{URLEndCharacter})?)
%state JS_STRING
%state JS_CHAR
%state JS_MLC
%state JS_DOCCOMMENT
%state JS_EOL_COMMENT
%state E4X
%state E4X_COMMENT
%state E4X_PI
%state E4X_DTD
%state E4X_INTAG
%state E4X_INATTR_DOUBLE
%state E4X_INATTR_SINGLE
%state E4X_CDATA
%state JS_TEMPLATE_LITERAL
%state JS_TEMPLATE_LITERAL_EXPR
%%
<YYINITIAL> {
// ECMA 3+ keywords.
"break" |
"continue" |
"delete" |
"else" |
"for" |
"function" |
"if" |
"in" |
"new" |
"this" |
"typeof" |
"var" |
"void" |
"while" |
"with" { addToken(Token.RESERVED_WORD); }
"return" { addToken(Token.RESERVED_WORD_2); }
//e4X
"each" {if(e4xSupported){ addToken(Token.RESERVED_WORD);} else {addToken(Token.IDENTIFIER);} }
//JavaScript 1.7
"let" {if(isJavaScriptCompatible("1.7")){ addToken(Token.RESERVED_WORD);} else {addToken(Token.IDENTIFIER);} }
// e4x miscellaneous
{JS_E4xAttribute} { addToken(isE4xSupported() ? Token.MARKUP_TAG_ATTRIBUTE : Token.ERROR_IDENTIFIER); }
// Reserved (but not yet used) ECMA keywords.
"abstract" { addToken(Token.RESERVED_WORD); }
"boolean" { addToken(Token.DATA_TYPE); }
"byte" { addToken(Token.DATA_TYPE); }
"case" { addToken(Token.RESERVED_WORD); }
"catch" { addToken(Token.RESERVED_WORD); }
"char" { addToken(Token.DATA_TYPE); }
"class" { addToken(Token.RESERVED_WORD); }
"const" { addToken(Token.RESERVED_WORD); }
"debugger" { addToken(Token.RESERVED_WORD); }
"default" { addToken(Token.RESERVED_WORD); }
"do" { addToken(Token.RESERVED_WORD); }
"double" { addToken(Token.DATA_TYPE); }
"enum" { addToken(Token.RESERVED_WORD); }
"export" { addToken(Token.RESERVED_WORD); }
"extends" { addToken(Token.RESERVED_WORD); }
"final" { addToken(Token.RESERVED_WORD); }
"finally" { addToken(Token.RESERVED_WORD); }
"float" { addToken(Token.DATA_TYPE); }
"goto" { addToken(Token.RESERVED_WORD); }
"implements" { addToken(Token.RESERVED_WORD); }
"import" { addToken(Token.RESERVED_WORD); }
"instanceof" { addToken(Token.RESERVED_WORD); }
"int" { addToken(Token.DATA_TYPE); }
"interface" { addToken(Token.RESERVED_WORD); }
"long" { addToken(Token.DATA_TYPE); }
"native" { addToken(Token.RESERVED_WORD); }
"package" { addToken(Token.RESERVED_WORD); }
"private" { addToken(Token.RESERVED_WORD); }
"protected" { addToken(Token.RESERVED_WORD); }
"public" { addToken(Token.RESERVED_WORD); }
"short" { addToken(Token.DATA_TYPE); }
"static" { addToken(Token.RESERVED_WORD); }
"super" { addToken(Token.RESERVED_WORD); }
"switch" { addToken(Token.RESERVED_WORD); }
"synchronized" { addToken(Token.RESERVED_WORD); }
"throw" { addToken(Token.RESERVED_WORD); }
"throws" { addToken(Token.RESERVED_WORD); }
"transient" { addToken(Token.RESERVED_WORD); }
"try" { addToken(Token.RESERVED_WORD); }
"volatile" { addToken(Token.RESERVED_WORD); }
"null" { addToken(Token.RESERVED_WORD); }
// Literals.
"false" |
"true" { addToken(Token.LITERAL_BOOLEAN); }
"NaN" { addToken(Token.RESERVED_WORD); }
"Infinity" { addToken(Token.RESERVED_WORD); }
// Functions.
"eval" |
"parseInt" |
"parseFloat" |
"escape" |
"unescape" |
"isNaN" |
"isFinite" { addToken(Token.FUNCTION); }
{LineTerminator} { addNullToken(); return firstToken; }
{JS_Identifier} { addToken(Token.IDENTIFIER); }
{Whitespace} { addToken(Token.WHITESPACE); }
/* String/Character literals. */
[\'] { start = zzMarkedPos-1; validJSString = true; yybegin(JS_CHAR); }
[\"] { start = zzMarkedPos-1; validJSString = true; yybegin(JS_STRING); }
[\`] { start = zzMarkedPos-1; validJSString = true; yybegin(JS_TEMPLATE_LITERAL); }
/* Comment literals. */
"/**/" { addToken(Token.COMMENT_MULTILINE); }
{JS_MLCBegin} { start = zzMarkedPos-2; yybegin(JS_MLC); }
{JS_DocCommentBegin} { start = zzMarkedPos-3; yybegin(JS_DOCCOMMENT); }
{JS_LineCommentBegin} { start = zzMarkedPos-2; yybegin(JS_EOL_COMMENT); }
/* Attempt to identify regular expressions (not foolproof) - do after comments! */
{JS_Regex} {
boolean highlightedAsRegex = false;
if (firstToken==null) {
addToken(Token.REGEX);
highlightedAsRegex = true;
}
else {
// If this is *likely* to be a regex, based on
// the previous token, highlight it as such.
Token t = firstToken.getLastNonCommentNonWhitespaceToken();
if (RSyntaxUtilities.regexCanFollowInJavaScript(t)) {
addToken(Token.REGEX);
highlightedAsRegex = true;
}
}
// If it doesn't *appear* to be a regex, highlight it as
// individual tokens.
if (!highlightedAsRegex) {
int temp = zzStartRead + 1;
addToken(zzStartRead, zzStartRead, Token.OPERATOR);
zzStartRead = zzCurrentPos = zzMarkedPos = temp;
}
}
/* Separators. */
{JS_Separator} { addToken(Token.SEPARATOR); }
{JS_Separator2} { addToken(Token.IDENTIFIER); }
/* Operators. */
[\+]?"="{Whitespace}*"<" {
int start = zzStartRead;
int operatorLen = yycharat(0)=='+' ? 2 : 1;
int yylen = yylength(); // Cache before first addToken() invalidates it
//System.out.println("'" + yytext() + "': " + yylength() + ", " + (operatorLen+1));
addToken(zzStartRead,zzStartRead+operatorLen-1, Token.OPERATOR);
if (yylen>operatorLen+1) {
//System.out.println((start+operatorLen) + ", " + (zzMarkedPos-2));
addToken(start+operatorLen,zzMarkedPos-2, Token.WHITESPACE);
}
zzStartRead = zzCurrentPos = zzMarkedPos = zzMarkedPos - 1;
if (isE4xSupported()) {
// Scanning will continue with "<" as markup tag start
yybegin(E4X, LANG_INDEX_E4X);
}
// Found e4x (or syntax error) but option not enabled;
// Scanning will continue at "<" as operator
}
{JS_Operator} { addToken(Token.OPERATOR); }
/* Numbers */
{JS_IntegerLiteral} { addToken(Token.LITERAL_NUMBER_DECIMAL_INT); }
{JS_HexLiteral} { addToken(Token.LITERAL_NUMBER_HEXADECIMAL); }
{JS_FloatLiteral} { addToken(Token.LITERAL_NUMBER_FLOAT); }
{JS_ErrorNumberFormat} { addToken(Token.ERROR_NUMBER_FORMAT); }
{JS_ErrorIdentifier} { addToken(Token.ERROR_IDENTIFIER); }
/* Ended with a line not in a string or comment. */
<<EOF>> { addNullToken(); return firstToken; }
/* Catch any other (unhandled) characters and flag them as bad. */
. { addToken(Token.ERROR_IDENTIFIER); }
}
<JS_STRING> {
[^\n\\\"]+ {}
\\x{HexDigit}{2} {}
\\x { /* Invalid latin-1 character \xXX */ validJSString = false; }
\\u{HexDigit}{4} {}
\\u { /* Invalid Unicode character \\uXXXX */ validJSString = false; }
\\. { /* Skip all escaped chars. */ }
\\ { /* Line ending in '\' => continue to next line. */
if (validJSString) {
addToken(start,zzStartRead, Token.LITERAL_STRING_DOUBLE_QUOTE);
addEndToken(INTERNAL_IN_JS_STRING_VALID);
}
else {
addToken(start,zzStartRead, Token.ERROR_STRING_DOUBLE);
addEndToken(INTERNAL_IN_JS_STRING_INVALID);
}
return firstToken;
}
\" { int type = validJSString ? Token.LITERAL_STRING_DOUBLE_QUOTE : Token.ERROR_STRING_DOUBLE; addToken(start,zzStartRead, type); yybegin(YYINITIAL); }
\n |
<<EOF>> { addToken(start,zzStartRead-1, Token.ERROR_STRING_DOUBLE); addNullToken(); return firstToken; }
}
<JS_CHAR> {
[^\n\\\']+ {}
\\x{HexDigit}{2} {}
\\x { /* Invalid latin-1 character \xXX */ validJSString = false; }
\\u{HexDigit}{4} {}
\\u { /* Invalid Unicode character \\uXXXX */ validJSString = false; }
\\. { /* Skip all escaped chars. */ }
\\ { /* Line ending in '\' => continue to next line. */
if (validJSString) {
addToken(start,zzStartRead, Token.LITERAL_CHAR);
addEndToken(INTERNAL_IN_JS_CHAR_VALID);
}
else {
addToken(start,zzStartRead, Token.ERROR_CHAR);
addEndToken(INTERNAL_IN_JS_CHAR_INVALID);
}
return firstToken;
}
\' { int type = validJSString ? Token.LITERAL_CHAR : Token.ERROR_CHAR; addToken(start,zzStartRead, type); yybegin(YYINITIAL); }
\n |
<<EOF>> { addToken(start,zzStartRead-1, Token.ERROR_CHAR); addNullToken(); return firstToken; }
}
<JS_TEMPLATE_LITERAL> {
[^\n\\\$\`]+ {}
\\x{HexDigit}{2} {}
\\x { /* Invalid latin-1 character \xXX */ validJSString = false; }
\\u{HexDigit}{4} {}
\\u { /* Invalid Unicode character \\uXXXX */ validJSString = false; }
\\. { /* Skip all escaped chars. */ }
{JS_TemplateLiteralExprStart} {
addToken(start, zzStartRead - 1, Token.LITERAL_BACKQUOTE);
start = zzMarkedPos-2;
if (varDepths==null) {
varDepths = new Stack<Boolean>();
}
else {
varDepths.clear();
}
varDepths.push(Boolean.TRUE);
yybegin(JS_TEMPLATE_LITERAL_EXPR);
}
"$" { /* Skip valid '$' that is not part of template literal expression start */ }
\` { int type = validJSString ? Token.LITERAL_BACKQUOTE : Token.ERROR_STRING_DOUBLE; addToken(start,zzStartRead, type); yybegin(YYINITIAL); }
/* Line ending in '\' => continue to next line, though not necessary in template strings. */
\\ {
if (validJSString) {
addToken(start,zzStartRead, Token.LITERAL_BACKQUOTE);
addEndToken(INTERNAL_IN_JS_TEMPLATE_LITERAL_VALID);
}
else {
addToken(start,zzStartRead, Token.ERROR_STRING_DOUBLE);
addEndToken(INTERNAL_IN_JS_TEMPLATE_LITERAL_INVALID);
}
return firstToken;
}
\n |
<<EOF>> {
if (validJSString) {
addToken(start, zzStartRead - 1, Token.LITERAL_BACKQUOTE);
addEndToken(INTERNAL_IN_JS_TEMPLATE_LITERAL_VALID);
}
else {
addToken(start,zzStartRead - 1, Token.ERROR_STRING_DOUBLE);
addEndToken(INTERNAL_IN_JS_TEMPLATE_LITERAL_INVALID);
}
return firstToken;
}
}
<JS_TEMPLATE_LITERAL_EXPR> {
[^\}\$\n]+ {}
"}" {
if (!varDepths.empty()) {
varDepths.pop();
if (varDepths.empty()) {
addToken(start,zzStartRead, Token.VARIABLE);
start = zzMarkedPos;
yybegin(JS_TEMPLATE_LITERAL);
}
}
}
{JS_TemplateLiteralExprStart} { varDepths.push(Boolean.TRUE); }
"$" {}
\n |
<<EOF>> {
// TODO: This isn't right. The expression and its depth should continue to the next line.
addToken(start,zzStartRead-1, Token.VARIABLE); addEndToken(INTERNAL_IN_JS_TEMPLATE_LITERAL_INVALID); return firstToken;
}
}
<JS_MLC> {
// JavaScript MLC's. This state is essentially Java's MLC state.
[^hwf\n\*]+ {}
{URL} { int temp=zzStartRead; addToken(start,zzStartRead-1, Token.COMMENT_MULTILINE); addHyperlinkToken(temp,zzMarkedPos-1, Token.COMMENT_MULTILINE); start = zzMarkedPos; }
[hwf] {}
{JS_MLCEnd} { yybegin(YYINITIAL); addToken(start,zzStartRead+1, Token.COMMENT_MULTILINE); }
\* {}
\n |
<<EOF>> { addToken(start,zzStartRead-1, Token.COMMENT_MULTILINE); addEndToken(INTERNAL_IN_JS_MLC); return firstToken; }
}
<JS_DOCCOMMENT> {
[^hwf\@\{\n\<\*]+ {}
{URL} { int temp=zzStartRead; addToken(start,zzStartRead-1, Token.COMMENT_DOCUMENTATION); addHyperlinkToken(temp,zzMarkedPos-1, Token.COMMENT_DOCUMENTATION); start = zzMarkedPos; }
[hwf] {}
"@"{JS_BlockTag} { int temp=zzStartRead; addToken(start,zzStartRead-1, Token.COMMENT_DOCUMENTATION); addToken(temp,zzMarkedPos-1, Token.COMMENT_KEYWORD); start = zzMarkedPos; }
"@" {}
"{@"{JS_InlineTag}[^\}]*"}" { int temp=zzStartRead; addToken(start,zzStartRead-1, Token.COMMENT_DOCUMENTATION); addToken(temp,zzMarkedPos-1, Token.COMMENT_KEYWORD); start = zzMarkedPos; }
"{" {}
\n { addToken(start,zzStartRead-1, Token.COMMENT_DOCUMENTATION); addEndToken(INTERNAL_IN_JS_COMMENT_DOCUMENTATION); return firstToken; }
"<"[/]?({Letter}[^\>]*)?">" { int temp=zzStartRead; addToken(start,zzStartRead-1, Token.COMMENT_DOCUMENTATION); addToken(temp,zzMarkedPos-1, Token.COMMENT_MARKUP); start = zzMarkedPos; }
\< {}
{JS_MLCEnd} { yybegin(YYINITIAL); addToken(start,zzStartRead+1, Token.COMMENT_DOCUMENTATION); }
\* {}
<<EOF>> { yybegin(YYINITIAL); addToken(start,zzEndRead, Token.COMMENT_DOCUMENTATION); addEndToken(INTERNAL_IN_JS_COMMENT_DOCUMENTATION); return firstToken; }
}
<JS_EOL_COMMENT> {
[^hwf\n]+ {}
{URL} { int temp=zzStartRead; addToken(start,zzStartRead-1, Token.COMMENT_EOL); addHyperlinkToken(temp,zzMarkedPos-1, Token.COMMENT_EOL); start = zzMarkedPos; }
[hwf] {}
\n |
<<EOF>> { addToken(start,zzStartRead-1, Token.COMMENT_EOL); addNullToken(); return firstToken; }
}
<E4X> {
"<!--" { start = zzStartRead; e4x_prevState = zzLexicalState; yybegin(E4X_COMMENT); }
{e4x_CDataBegin} { addToken(Token.MARKUP_CDATA_DELIMITER); start = zzMarkedPos; yybegin(E4X_CDATA); }
"<!" { start = zzMarkedPos-2; e4x_inInternalDtd = false; yybegin(E4X_DTD); }
"<?" { start = zzMarkedPos-2; yybegin(E4X_PI); }
"<"{e4x_TagName} {
int count = yylength();
addToken(zzStartRead,zzStartRead, Token.MARKUP_TAG_DELIMITER);
addToken(zzMarkedPos-(count-1), zzMarkedPos-1, Token.MARKUP_TAG_NAME);
yybegin(E4X_INTAG);
}
"</"{e4x_TagName} {
int count = yylength();
addToken(zzStartRead,zzStartRead+1, Token.MARKUP_TAG_DELIMITER);
addToken(zzMarkedPos-(count-2), zzMarkedPos-1, Token.MARKUP_TAG_NAME);
yybegin(E4X_INTAG);
}
"<" { addToken(Token.MARKUP_TAG_DELIMITER); yybegin(E4X_INTAG); }
"</" { addToken(Token.MARKUP_TAG_DELIMITER); yybegin(E4X_INTAG); }
{e4x_Identifier} { addToken(Token.IDENTIFIER); }
{e4x_EndXml} { yybegin(YYINITIAL, LANG_INDEX_DEFAULT); addToken(Token.IDENTIFIER); }
{e4x_EntityReference} { addToken(Token.MARKUP_ENTITY_REFERENCE); }
{Whitespace} { addToken(Token.WHITESPACE); }
{LineTerminator} |
<<EOF>> { addEndToken(INTERNAL_E4X); return firstToken; }
}
<E4X_COMMENT> {
[^hwf\n\-]+ {}
{URL} { int temp=zzStartRead; addToken(start,zzStartRead-1, Token.MARKUP_COMMENT); addHyperlinkToken(temp,zzMarkedPos-1, Token.MARKUP_COMMENT); start = zzMarkedPos; }
[hwf] {}
"-->" { int temp = zzMarkedPos; addToken(start,zzStartRead+2, Token.MARKUP_COMMENT); start = temp; yybegin(e4x_prevState); }
"-" {}
{LineTerminator} |
<<EOF>> { addToken(start,zzStartRead-1, Token.MARKUP_COMMENT); addEndToken(INTERNAL_IN_E4X_COMMENT - e4x_prevState); return firstToken; }
}
<E4X_PI> {
[^\n\?]+ {}
"?>" { yybegin(E4X); addToken(start,zzStartRead+1, Token.MARKUP_PROCESSING_INSTRUCTION); }
"?" {}
{LineTerminator} |
<<EOF>> { addToken(start,zzStartRead-1, Token.MARKUP_PROCESSING_INSTRUCTION); addEndToken(INTERNAL_E4X_MARKUP_PROCESSING_INSTRUCTION); return firstToken; }
}
<E4X_DTD> {
[^\n\[\]<>]+ {}
"<!--" { int temp = zzStartRead; addToken(start,zzStartRead-1, Token.MARKUP_DTD); start = temp; e4x_prevState = zzLexicalState; yybegin(E4X_COMMENT); }
"<" {}
"[" { e4x_inInternalDtd = true; }
"]" { e4x_inInternalDtd = false; }
">" { if (!e4x_inInternalDtd) { yybegin(E4X); addToken(start,zzStartRead, Token.MARKUP_DTD); } }
{LineTerminator} |
<<EOF>> { addToken(start,zzStartRead-1, Token.MARKUP_DTD); addEndToken(e4x_inInternalDtd ? INTERNAL_E4X_DTD_INTERNAL : INTERNAL_E4X_DTD); return firstToken; }
}
<E4X_INTAG> {
{e4x_InTagIdentifier} { addToken(Token.MARKUP_TAG_ATTRIBUTE); }
{Whitespace} { addToken(Token.WHITESPACE); }
"=" { addToken(Token.OPERATOR); }
"/" { addToken(Token.MARKUP_TAG_DELIMITER); /* Not valid but we'll still accept it */ }
"/>" { yybegin(E4X); addToken(Token.MARKUP_TAG_DELIMITER); }
">" { yybegin(E4X); addToken(Token.MARKUP_TAG_DELIMITER); }
[\"] { start = zzMarkedPos-1; yybegin(E4X_INATTR_DOUBLE); }
[\'] { start = zzMarkedPos-1; yybegin(E4X_INATTR_SINGLE); }
<<EOF>> { addToken(start,zzStartRead-1, INTERNAL_E4X_INTAG); return firstToken; }
}
<E4X_INATTR_DOUBLE> {
[^\"]* {}
[\"] { yybegin(E4X_INTAG); addToken(start,zzStartRead, Token.MARKUP_TAG_ATTRIBUTE_VALUE); }
<<EOF>> { addToken(start,zzStartRead-1, Token.MARKUP_TAG_ATTRIBUTE_VALUE); addEndToken(INTERNAL_E4X_ATTR_DOUBLE); return firstToken; }
}
<E4X_INATTR_SINGLE> {
[^\']* {}
[\'] { yybegin(E4X_INTAG); addToken(start,zzStartRead, Token.MARKUP_TAG_ATTRIBUTE_VALUE); }
<<EOF>> { addToken(start,zzStartRead-1, Token.MARKUP_TAG_ATTRIBUTE_VALUE); addEndToken(INTERNAL_E4X_ATTR_SINGLE); return firstToken; }
}
<E4X_CDATA> {
[^\]]+ {}
{e4x_CDataEnd} { int temp=zzStartRead; yybegin(E4X); addToken(start,zzStartRead-1, Token.MARKUP_CDATA); addToken(temp,zzMarkedPos-1, Token.MARKUP_CDATA_DELIMITER); }
"]" {}
<<EOF>> { addToken(start,zzStartRead-1, Token.MARKUP_CDATA); addEndToken(INTERNAL_E4X_MARKUP_CDATA); return firstToken; }
}
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