[cfe-dev] Match member initializers for themself

Aaron Ballman via cfe-dev cfe-dev at lists.llvm.org
Fri Sep 23 10:16:55 PDT 2016


On Fri, Sep 23, 2016 at 11:01 AM, Aaron Ballman <aaron at aaronballman.com> wrote:
> On Fri, Sep 23, 2016 at 9:07 AM, David Come via cfe-dev
> <cfe-dev at lists.llvm.org> wrote:
>> Hi,
>>
>>
>> I'm using clang-matchers with clang-querry 3.8 and I would like to match
>> members initializer for themself.
>>
>>
>> For instance,  in the following snippet
>>
>> struct A
>> {
>>   int i;
>>   double d;
>>   A(){}
>>   A(int ii) : i(ii),d(-1.0){}
>> };
>>
>> I would like to get i(ii) and d(-1.0).
>>
>> I tried match cxxCtorInitializer(forField(hasName("i"))), which is exactly
>> what I want according to the doc, but I get Not a valid top-level matcher.
>>
>>
>> I'm able to retrieve the constructor that holds the initializing expression
>> i'm interested into with match
>> cxxConstructorDecl(hasAnyConstructorInitializer(forField(hasName("i"))))
>>
>> Is there something I'm doing wrong ? is there a bug in clang querry ?
>
> This is a bug with the way that the AST matchers register dynamic
> matchers, from what I can tell. I think this is worth reporting a bug
> over.

You're welcome to follow along: https://reviews.llvm.org/D24874

~Aaron


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