I don't suppose there's a way to "see" source code generated by templates after a compile but before execution?  Or does the compiler generate it to a lower level on the fly; thus losing the source code?

I'm assuming no because if there were a way, I'd of come across it by now :)


Now that I think about, was there even a way to look at c/c++ code after the pre-processor step?

On 17/07/2016 5:57 PM, WhatMeWorry wrote:
>
>
> I don't suppose there's a way to "see" source code generated by
> templates after a compile but before execution?  Or does the compiler
> generate it to a lower level on the fly; thus losing the source code?
>
> I'm assuming no because if there were a way, I'd of come across it by
> now :)

There isn't and it has been asked for (I for one want it).

> Now that I think about, was there even a way to look at c/c++ code after
> the pre-processor step?

Yup. But that is done by an external tool most of the time.

On Sunday, 17 July 2016 at 05:57:52 UTC, WhatMeWorry wrote:
>
>
> I don't suppose there's a way to "see" source code generated by templates after a compile but before execution?  Or does the compiler generate it to a lower level on the fly; thus losing the source code?
>
> I'm assuming no because if there were a way, I'd of come across it by now :)
>
>
> Now that I think about, was there even a way to look at c/c++ code after the pre-processor step?

If you do use mixins I can craft you a patch.
If you want to see template expansions you have to wait a little longer.

On Sunday, 17 July 2016 at 11:14:39 UTC, Stefan Koch wrote:
> On Sunday, 17 July 2016 at 05:57:52 UTC, WhatMeWorry wrote:
>>
>>
>> I don't suppose there's a way to "see" source code generated by templates after a compile but before execution?  Or does the compiler generate it to a lower level on the fly; thus losing the source code?
>>
>> I'm assuming no because if there were a way, I'd of come across it by now :)
>>
>>
>> Now that I think about, was there even a way to look at c/c++ code after the pre-processor step?
>
> If you do use mixins I can craft you a patch.
> If you want to see template expansions you have to wait a little longer.

Wonderful! Nope, I can wait. I don't want to do anything that would slow you down. This will make learning and debugging code generation so much easier.

On Sunday, 17 July 2016 at 11:14:39 UTC, Stefan Koch wrote:
> If you want to see template expansions you have to wait a little longer.

Wow! Is this really possible?! So long time several peoples asked this...

On Sunday, 17 July 2016 at 14:54:34 UTC, zabruk70 wrote:
> On Sunday, 17 July 2016 at 11:14:39 UTC, Stefan Koch wrote:
>> If you want to see template expansions you have to wait a little longer.
>
> Wow! Is this really possible?! So long time several peoples asked this...

I am reasonably sure that I can do it :)

However don't expect anything pretty.
The indentation will be long gone ...

On Sunday, 17 July 2016 at 05:57:52 UTC, WhatMeWorry wrote:
>
[snip]

>
> Now that I think about, was there even a way to look at c/c++ code after the pre-processor step?

Does this do what you want?

cl.exe /E
gcc -E
clang -E
clang-cl /E

On Sunday, 17 July 2016 at 16:30:38 UTC, Stefan Koch wrote:
> On Sunday, 17 July 2016 at 14:54:34 UTC, zabruk70 wrote:
>> On Sunday, 17 July 2016 at 11:14:39 UTC, Stefan Koch wrote:
>>> If you want to see template expansions you have to wait a little longer.
>>
>> Wow! Is this really possible?! So long time several peoples asked this...
>
> I am reasonably sure that I can do it :)
>
> However don't expect anything pretty.
> The indentation will be long gone ...

Just pipe it through dformat should do a good enough job.

On Monday, 18 July 2016 at 07:37:27 UTC, lobo wrote:
> On Sunday, 17 July 2016 at 05:57:52 UTC, WhatMeWorry wrote:
>>
> [snip]
>
>>
>> Now that I think about, was there even a way to look at c/c++ code after the pre-processor step?
>
> Does this do what you want?
>
> cl.exe /E
> gcc -E
> clang -E
> clang-cl /E

i appreciate the reply but you're about 20 years too late :)  Thankfully, my c/c++ days are long gone.  Long live D.

On Sunday, 17 July 2016 at 16:30:38 UTC, Stefan Koch wrote:
> On Sunday, 17 July 2016 at 14:54:34 UTC, zabruk70 wrote:
>> On Sunday, 17 July 2016 at 11:14:39 UTC, Stefan Koch wrote:
>>> If you want to see template expansions you have to wait a little longer.
>>
>> Wow! Is this really possible?! So long time several peoples asked this...
>
> I am reasonably sure that I can do it :)


I did it for function templates just now.
It will the instantiated bodys to std-out.