Re: Highlighting regular expression literals in JavaScript code

[email protected] wrote:
> Lorenzo Bettini wrote:
>> [email protected] wrote:
>>> Source-highlight currently does not highlight JavaScript regular 
>>> expression literals.
>>>
>>> http://developer.mozilla.org/en/docs/Core_JavaScript_1.5_Reference:Global_Objects:RegExp 
>>>
>>>
>>> I am wondering what would be the best way to highlight these?  This 
>>> is what I came up with:
>>>
>>> include "c_comment.lang"
>>>
>>> #
>>> # Pattern for matching regular expression literals:
>>> # The negative lookahead at the end protects against cases like this:
>>> #   var foo = a / b;  /* foo is the quotient */
>>> # Still fooled by things like this:
>>> #   var foo = a / b / c;
>>> #   var foo = a / f('foo/bar');
>>> #
>>> regexp = '/(\\.|[^\\/])+/(?![*/])'
>>>
>>> include "number.lang"
>>>
>>> include "c_string.lang"
>>>
>>> keyword = 
>>> "abstract|break|case|catch|class|const|continue|debugger|default|delete|do|else|enum|export|extends|false|final|finally|for|function|goto|if|implements|in|instanceof|interface|native|new|null|private|protected|prototype|public|return|static|super|switch|synchronized|throw|throws|this|transient|true|try|typeof|var|volatile|while|with" 
>>>
>>>
>>> include "symbols.lang"
>>>
>>> cbracket = "{|}"
>>>
>>> include "function.lang"
>>>
>>
>> sorry for my late answer on this issue! :-)
>>
>> I'll try to take a look at this problem, probably your solution should 
>> be fine :-)
>>
>> cheers
>>     Lorenzo
>>
> 
> I have been doing some additional work on it and made a few modifications:
> 
> include "c_comment.lang"
> 
> # highlight the flags    vvvvvv
> regexp = '/(\\.|[^\\/])+/[gim]*(?![*/])'
> 
> include "number.lang"
> 
> include "c_string.lang"
> 
> keyword = 
> "abstract|break|case|catch|class|const|continue|debugger|default|delete|do|else|enum|export|extends|false|final|finally|for|function|goto|if|implements|in|instanceof|interface|native|new|null|private|protected|prototype|public|return|static|super|switch|synchronized|throw|throws|this|transient|true|try|typeof|var|volatile|while|with" 
> 
> 
> # this was originally in the java.lang file, I removed it because I
> # thought it was only for Java, but on further reflection all the
> # words are reserved words in JavaScript (and "void" is an actual
> # keyword), so it is best to leave it in
> type = "int|byte|boolean|char|long|float|double|short|void"
> 
> include "symbols.lang"
> 
> cbracket = "{|}"
> 
> # in JavaScript, the '$' is valid in an identifier
> vardef FUNCTION = '([[:alpha:]]|_|\$)[[:word:]\$]*[[:blank:]]*(?=\()'
> function = $FUNCTION
> 

the new version (2.8) contains your changes :-)
thanks!

cheers
	Lorenzo

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Lorenzo Bettini, PhD in Computer Science, DSI, Univ. di Firenze
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