Re: [Help-source-highlight] regexp in javascript.lang (3rd try!)

[gnombat]

Lorenzo Bettini wrote:
> address@hidden wrote:
> > include "c_comment.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" 
> >
> >
> > (symbol,normal,symbol) = `(\+\+|--|\)|\])(\s*)(/=?(?![*/]))`
> > (number,normal,symbol) =
> > `(0x[[:xdigit:]]+|(?:[[:digit:]]*\.)?[[:digit:]]+(?:[eE][+-]?[[:digit:]]+)?)(\s*)(/(?![*/]))` 
> >
> > (normal,symbol) = `([[:alpha:]$_][[:alnum:]$_]*\s*)(/=?(?![*/]))`
> >
> > regexp = '/(\\.|[^*\\/])(\\.|[^\\/])*/[gim]*'
> >
> > include "number.lang"
> >
> > include "c_string.lang"
> >
> > include "symbols.lang"
> >
> > cbracket = "{|}"
> >
> > include "function.lang"
>
> Actually it works also this way, and it reuses most of java.lang (see 
> the attached file);
>
> what do you think?

The keyword definition has to occur before the definitions with the 
division operator in order to correctly match things like this:

/* unusual, but valid JavaScript */
throw /foo/;

/* this is more likely to occur in practice */
function f() {
  return /foo/;
}

/* or this */
function g(bar) {
  return /foo/.test(bar);
}