[cfe-dev] Retrieve variable name

[Alberto Barbaro]

Yes yes, I'll do it.

Thanks,
Alberto
On 8 Jan 2015 11:18, "Manuel Klimek" <klimek at google.com> wrote:

> Well, you'll need to dyn_cast and look through the implicitcast node, but
> apart from that, sounds about right.
>
> On Thu Jan 08 2015 at 10:30:02 AM Alberto Barbaro <
> barbaro.alberto at gmail.com> wrote:
>
>> Hi Manuel,
>> thanks for your help.
>>
>> Yes i meant "int main()". Based on what you said I think I should do
>> something like: decl->getInit()->getNameInfo()->getName();
>>
>> Thanks,
>> Alberto
>>
>> 2015-01-08 8:54 GMT+00:00 Manuel Klimek <klimek at google.com>:
>>
>>> getInit should be/contain a declrefexpr
>>>
>>> On Wed, Jan 7, 2015, 21:41 Alberto Barbaro <barbaro.alberto at gmail.com>
>>> wrote:
>>>
>>>> Hi all,
>>>> please consider this code:
>>>>
>>>> int main {
>>>>
>>>
>>> I assume you mean "main()"
>>>
>>>
>>>>    int a = 7;
>>>>    int b = a;
>>>> }
>>>>
>>>> I have a Decl object called decl that represents int b = a; If i do
>>>> decl->getInit() i can have an Expr pointer that represents a I think. From
>>>> there how can i retrieve the variable name 'a'? Maybe using
>>>> getNameAsString()? I tried but it didn't work.
>>>>
>>>
>>> As  -ast-dump shows, getInit is a ImplicitCastExpr which has a
>>> DeclRefExpr which points to 'a'.
>>>
>>> $ clang_check -ast-dump /tmp/t.cc --
>>> TranslationUnitDecl 0x21c05e0 <<invalid sloc>> <invalid sloc>
>>> |-TypedefDecl 0x21c0b20 <<invalid sloc>> <invalid sloc> implicit
>>> __int128_t '__int128'
>>> |-TypedefDecl 0x21c0b80 <<invalid sloc>> <invalid sloc> implicit
>>> __uint128_t 'unsigned __int128'
>>> |-TypedefDecl 0x21c0f40 <<invalid sloc>> <invalid sloc> implicit
>>> __builtin_va_list '__va_list_tag [1]'
>>> `-FunctionDecl 0x21c0fe0 </tmp/t.cc:1:1, line:4:1> line:1:5 main 'int
>>> (void)'
>>>   `-CompoundStmt 0x21c1240 <col:12, line:4:1>
>>>     |-DeclStmt 0x21c1168 <line:2:3, col:12>
>>>     | `-VarDecl 0x21c10f0 <col:3, col:11> col:7 used a 'int' cinit
>>>     |   `-IntegerLiteral 0x21c1148 <col:11> 'int' 7
>>>     `-DeclStmt 0x21c1228 <line:3:3, col:12>
>>>       `-VarDecl 0x21c1190 <col:3, col:11> col:7 b 'int' cinit
>>>         `-ImplicitCastExpr 0x21c1210 <col:11> 'int' <LValueToRValue>
>>>           `-DeclRefExpr 0x21c11e8 <col:11> 'int' lvalue Var 0x21c10f0
>>> 'a' 'int'
>>>
>>>
>>>>
>>>> Thanks,
>>>> Alberto
>>>> _______________________________________________
>>>> cfe-dev mailing list
>>>> cfe-dev at cs.uiuc.edu
>>>> http://lists.cs.uiuc.edu/mailman/listinfo/cfe-dev
>>>>
>>>
>>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/cfe-dev/attachments/20150108/83f53f14/attachment.html>