Closed
Bug 503619
Opened 15 years ago
Closed 6 years ago
Add+enforce NS_ALWAYS_OK attribute
Categories
(Developer Infrastructure :: Source Code Analysis, defect)
Tracking
(Not tracked)
RESOLVED
INACTIVE
People
(Reporter: taras.mozilla, Unassigned)
References
Details
Xpcom forces us to use nsresults for methods that never fail. This then suggests to defensive programmers that they should check for errors. Code ends up with lots of pointless NS_FAILED spaghetti. This would also have a side benefit of flagging methods for outparamdelling if we decide to break source comparability. The way to do this is to add a flag to idl that a class may not be implemented in JS and then statically check that the methods do indeed only return NS_OK.
Comment 1•15 years ago
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We should deCOMtaminate. Any XPCOM interface that's scriptable, where the method is scriptable, could be implemented fallibly by JS, even if its C++ impl is not fallible. So we can't always be sure something will be "always OK". But in the case where we can be sure, then it must be a non-scriptable API, so ripe for deCOMtamination, right? /be
Reporter | ||
Comment 2•15 years ago
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(In reply to comment #1) > We should deCOMtaminate. Any XPCOM interface that's scriptable, where the > method is scriptable, could be implemented fallibly by JS, even if its C++ impl > is not fallible. So we can't always be sure something will be "always OK". > > But in the case where we can be sure, then it must be a non-scriptable API, so > ripe for deCOMtamination, right? I meant this for things like nsIFile::GetNativeLeafName, etc. Stuff that can get called from JS and is likely to be used in non-mozilla code. I agree that we should decomtaminate in the long term, but this would be a good nearterm step.
Updated•7 years ago
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Product: Core → Firefox Build System
Updated•6 years ago
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Status: NEW → RESOLVED
Closed: 6 years ago
Resolution: --- → INACTIVE
Updated•2 years ago
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Product: Firefox Build System → Developer Infrastructure
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Description
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