You know what, let me file some bugs. I just thought of some more.

> On Dec 22, 2015, at 1:45 PM, Michael Gottesman via swift-dev 
> <swift-dev@swift.org> wrote:
> 
> Here are some off the top of my head. Many are related to code quality. Tell 
> me what you think:
> 
> 1. We have recently gotten some SILParser crashers. These need to be fixed. I 
> looked at 1-2 of them and the ones I looked at are where we should be giving 
> out a diagnostic but are instead just asserting.
> 
> 2. The SILParser is a recursive descent parser. In general when one 
> implements a recursive descent parser, one should above the routine that does 
> the various parts of the parsing show the grammar being parsed. SILParser has 
> inconsistently done this. I would go through all of the methods and see which 
> are missing this documentation and fix the documentation.
> 
> 3. parseSILInstruction is horrible and makes me cry every time I see it. It 
> is a method that is ~1900 lines with a huge switch in it. We should refactor 
> it into a visitor structure. In fact it is large enough that we should 
> consider moving it into its own file if it is possible.
> 
> Michael
> 
>> On Dec 22, 2015, at 12:02 PM, Davide Italiano <dccitali...@gmail.com 
>> <mailto:dccitali...@gmail.com>> wrote:
>> 
>> 
>> 
>> On Sun, Dec 13, 2015 at 4:29 PM, Michael Gottesman via swift-dev 
>> <swift-dev@swift.org <mailto:swift-dev@swift.org>> wrote:
>> This is a small starter project for those who are interested in working with 
>> SIL.
>> 
>> The SIL Parser currently is unable to parse switch_enum of undef. I wrote a 
>> patch that does the work some time ago, but I never have had time to finish 
>> it (i.e. make sure everything works ok/write tests). I posted the patch in 
>> this issue:
>> 
>> https://bugs.swift.org/browse/SR-210 <https://bugs.swift.org/browse/SR-210>
>> 
>> My hope is that even though a lot of the work is already done this may serve 
>> as good starting point for someone who wants to poke at the SIL Parser (a 
>> part of the code base that has not gotten as much attention as others).
>> 
>> Michael
>> 
>> 
>> Hi Michael,
>> I'm interested in something like this. I noticed this project has been 
>> already taken, but you mentioned in a subsequent mail you have a list of 
>> them. What are the other proposals?
>> 
>> Thank you,
>> 
>> --
>> Davide
> 
> 
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