631176 - Narcissus should recover from parse errors

Status: RESOLVED WONTFIX

(Other Applications Graveyard :: Narcissus, defect)

Description

[Fabian Jakobs]

User-Agent:       Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_6; en-US) AppleWebKit/534.16 (KHTML, like Gecko) Chrome/10.0.648.6 Safari/534.16
Build Identifier: Narcissus rev 7ef973f51753eaaeb620

Right now Narcissus will stop parsing and throw an exception on the first parse error. Ideally Narcissus should recover from parse errors and continue parsing just like e.g. gcc does.

I'm interested in this because I'm using Narcissus to do background syntax checks in the Ace code editor  (recently merged with Mozilla Skywriter) but right now it will always show no or exactly one parse error.

Reproducible: Always

Steps to Reproduce:
parsing something like this:

function foo(bar { // missing ')'
  alert(bar)
}
Actual Results:  
This will throw a parse error and stop parsing

Expected Results:  
Ideally a error recovery rule would detect the missing ')' and continue parsing. The parse will still fail but possible further errors will also be reported.

Comment 1

[Sylvestre Ledru [:Sylvestre]]

Closing as Narcissus isn't maintained anymore.