I’m working on a swift target for haxe and want it to use the interfaces in
swift modules. The haxe compiler is written in ocml and so far I’ve created an
llvm bitcode parser in ocaml which can read all the blocks and records, then
read through the DECLS_AND_TYPES_BLOCK and map DECLS to their parents.
My current guess is I’m not understanding how DECLs (like Int) that come from
outside the module file work and maybe something to do with XREFs.
I do understand the module format will change and am fine with making changes
later.
I’ll definitely take a look at those tools.
Thanks for the help,
Aaron
> On Aug 24, 2017, at 5:56 PM, Slava Pestov wrote:
>
> Yeah, it’s important to keep in mind we don’t have a stable module format
> right now, so anything developed Swift 4 will likely need to be revised again
> with the next version.
>
> The C++ API is not stable either, but approach could be to dump the
> ‘generated interface’ using swift-ide-tool or similar, and parse the text.
> Also, it’s worth taking a look at swift-api-digester too.
>
> Slava
>
>> On Aug 24, 2017, at 4:35 PM, Argyrios Kyrtzidis via swift-dev
>> wrote:
>>
>> Hi,
>>
>> What are you trying to do exactly ? Have you considered reading the decls
>> with a tool using the C++ APIs (load a module and iterate over the decls) ?
>> I think that would be easier and more future-proof.
>>
>>> On Aug 22, 2017, at 11:57 AM, Coder via swift-dev
>>> wrote:
>>>
>>> Hello,
>>>
>>> I’m working on extracting information from .swiftmodule files. Currently I
>>> can read all blocks and records but I’m having trouble identifying all
>>> DECLs in the DECLS_AND_TYPES_BLOCK. Below is a bcanalyzer dump of a
>>> swifmodule file created from this one line of code:
>>>
>>> class Example {}
>>>
>>> A couple questions:
>>>
>>> • The DECL_OFFSETS record contains 6 indexes but I only count 5 DECLs
>>> (class, destructor, constructor, 2 param). Where is the 6th?
>>> • According to documentation, the DECL_OFFSETS point to records in the
>>> DECLS_AND_TYPES_BLOCK blob but offset indexes show below (the “op”
>>> attributes) are larger than the blob length. Where do the indexes start
>>> from?
>>>
>>> Sorry if this is the wrong place to ask and thanks for any help,
>>> Aaron
>>>
>>>
>>>
>>>
>>> - bcanalyzer dump -
>>>
>>>
>>>
>>>
>>> blob data = 'tool'
>>> blob data = '3.1/Apple Swift
>>> version 3.1 (swiftlang-802.0.53 clang-802.0.42)'
>>> blob data = 'x86_64-apple-macosx10.9'
>>>
>>>
>>>
>>>
>>>
>>> blob data = 'Swift'
>>> blob data = 'SwiftOnoneSupport'
>>>
>>>
>>>
>>>
>>>
>>>
>>> >> op8=1/> record string = ''
>>>
>>>
>>>
>>> record string = ''
>>>
>>>
>>>
>>> >> op7=0 op8=3 op9=0 op10=2/> record string = ''
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> record string = ''
>>>
>>>
>>>
>>>
>>> blob data = unprintable, 30 bytes.
>>>
>>>
>>> >> op5=74671/>
>>> >> op5=74375 op6=74452/>
>>>
>>>
>>> record string = ''
>>> record string = ''
>>> record string = 'T'
>>> record string = ''
>>> blob data = unprintable, 40 bytes.
>>> blob data = unprintable, 44 bytes.
>>>
>>>
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