Hey Antranig, Thanks for continuing to work on this. It's a shame that our fixes weren't accepted upstream.
Here some of my comments/concerns: I think we shouldn't select "Assume console, alert, ..." as not all browsers support "console" I'm not sure i agree with your new white space options. I think they're probably purely stylistic, but I think it is better to be consistent one way or the other. the //jslint:ok comment seems useful, but dangerous. It is a little easier to verify the globals comment, but I've found this also to have been misused. Is someone able to add an explanation after the comment, explaining why it is an exception? Thanks Justin On 2011-03-08, at 12:04 PM, Antranig Basman wrote: > I have placed a revised version of the implementation of the JSLint tool that > we have inherited from Douglas Crockford up at > http://ponder.org.uk/fluid/fulljslint.html - the source code is also > available for inspection in my github area. > Since we have established that no economies of development are possible by > sharing even the most conservative fixes upstream, I've taken the opportunity > to overhaul the implementation thoroughly, and have fixed several bugs > relating to outright misparses as well as misinterpretation of wrapping > constructs, as will as implementing some new options and configuration to > make it easier for our project to use. I am surfacing a list of what some of > these are (in cases where there might be different opinions) so that we can > decide now we have a free hand what kinds of code we want to tolerate. Please > also speak up if you have any suggestions for completely new features of > JSLint that are not in this set, since our implementation is now our own and > it has been found fairly straightforward to implement new features. > > Firstly, the reason for the original fork in the first place, an option to > tolerate the for (var x in ...) construction which recent versions of JSLint > threw out as an unconditional parse error, aborting further processing. > (forvar) > > Secondly, an option to tolerate two variants for block indentation of > "run-on" control structures, being if...else and try..catch..finally - > original JSLint would ONLY tolerate the following variant > if (cond) { > material 1; > } else if { > material 2; > } > whereas we may now tolerate BOTH the above variant and ALSO the following (I > believe more commonly seen) form (elsecatch) > if (cond) { > material 1; > } > else if { > material 2; > } > > Thirdly, an option to tolerate zero or one spaces in a few cases around > operators - the vast majority remain at the original defaults of requiring > exactly 1 space for binary operators (&&, ===, etc.) and zero spaces for > unary operators (++, --) but at least in my opinion, our rules for spaces > following the "function" keyword have been annoyingly inconsistent, with > exactly zero spaces tolerated in one case and exactly one space tolerated in > another. With the option (operator), either zero or one space are tolerated - > for example, both > var x = function (x) {.... > and > var x = function(x) {... > are acceptable. > > The indentation rules in general are unchanged in this implementation, apart > from a few bug fixes in cases of multiple constructs per line which would > sometimes lead to original JSLint to recommend NO indentation on the next, > multiply nested line which was clearly a bug (constructions like > var y = fluid.transform(list, function(value, key) { > ... would often require faulty indenting HERE. ) > > Fourthly, there is a new "emergency escape" rule in the form of a specially > formatted comment accepted on a line (this is a common option with the > implementations of linting tools in the C world from which JSLint takes > heritage) - of the form // jslint:ok - this allows a one-off override of the > linting rules for a particular line of code that has been determined through > specific inspection to be safe. Clearly this rule must be used very sparingly > since most linting violations (especially in the new implementation) are > genuine. It was used a few times in the renderer code, particularly to allow > exceptions for the "var x is already defined" warning caused by JavaScript's > anomalous scoping rules, and for the "do not declare functions in a loop" > rule which is a blanket recommendation which JSLint makes without any > inspection of the flow involved. In particular, functions which do not bind > to the loop counter variable for the loop they are nested in should be > excepted from this rule. Lots of the renderer code is quite intricate and > allowing a handful of violations (in my opinion) allowed the code to remain > more readable by not having to arbitrarily rename some variables which > clearly served the same function, or reduce locality by breaking small > anonymous functions out of loops. > > Please chime in with your opinions on what you think we should do about these > various options and constructions :) > > Antranig. > _______________________________________________________ > fluid-work mailing list - [email protected] > To unsubscribe, change settings or access archives, > see http://fluidproject.org/mailman/listinfo/fluid-work
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