Menu
Search

Forums

Forum Index

Thread overview
How to get the name of an object's class at compile time?
Feb 17, 2020
Nathan S.
Feb 17, 2020
Stefan Koch
Feb 18, 2020
Basile B.
Feb 18, 2020
Stefan Koch
February 17, 2020
Gravatar of Nathan S.Posted by Nathan S.Reply
Nathan S.
Gravatar of Nathan S.


Reply
What I want is something like this:

----
string className(in Object obj) {
    return obj is null ? "null" : typeid(obj).name;
}
----

...except I want it to work in CTFE. What is the way to do this in D?
February 17, 2020
Gravatar of Steven SchveighofferPosted by Steven Schveighoffer
in reply to Nathan S.		Reply
Steven Schveighoffer
Gravatar of Steven Schveighoffer
Posted in reply to Nathan S.


Reply
On 2/17/20 2:28 AM, Nathan S. wrote:
> What I want is something like this:
> 
> ----
> string className(in Object obj) {
>      return obj is null ? "null" : typeid(obj).name;
> }
> ----
> 
> ...except I want it to work in CTFE. What is the way to do this in D?

https://issues.dlang.org/show_bug.cgi?id=7147

It's not doable. It really should be.

-Steve
February 17, 2020
Gravatar of Stefan KochPosted by Stefan Koch
in reply to Steven Schveighoffer		Reply
Stefan Koch
Gravatar of Stefan Koch
Posted in reply to Steven Schveighoffer


Reply
On Monday, 17 February 2020 at 18:49:55 UTC, Steven Schveighoffer wrote:
> On 2/17/20 2:28 AM, Nathan S. wrote:
>> What I want is something like this:
>> 
>> ----
>> string className(in Object obj) {
>>      return obj is null ? "null" : typeid(obj).name;
>> }
>> ----
>> 
>> ...except I want it to work in CTFE. What is the way to do this in D?
>
> https://issues.dlang.org/show_bug.cgi?id=7147
>
> It's not doable. It really should be.
>
> -Steve

Upon seeing this I just implemented typeid(stuff).name;

https://github.com/dlang/dmd/pull/10796

With any luck this will be possible in the next release ;)
February 18, 2020
Gravatar of Basile B.Posted by Basile B.
in reply to Stefan Koch		Reply
Basile B.
Gravatar of Basile B.
Posted in reply to Stefan Koch


Reply
On Monday, 17 February 2020 at 22:34:31 UTC, Stefan Koch wrote:
>
> Upon seeing this I just implemented typeid(stuff).name;
>
> https://github.com/dlang/dmd/pull/10796
>
> With any luck this will be possible in the next release ;)

Can this work using `stuff.classinfo.name` too ?
This is the same as `typeid(stuff).name`
February 18, 2020
Gravatar of Stefan KochPosted by Stefan Koch
in reply to Basile B.		Reply
Stefan Koch
Gravatar of Stefan Koch
Posted in reply to Basile B.


Reply
On Tuesday, 18 February 2020 at 03:33:21 UTC, Basile B. wrote:
> On Monday, 17 February 2020 at 22:34:31 UTC, Stefan Koch wrote:
>>
>> Upon seeing this I just implemented typeid(stuff).name;
>>
>> https://github.com/dlang/dmd/pull/10796
>>
>> With any luck this will be possible in the next release ;)
>
> Can this work using `stuff.classinfo.name` too ?
> This is the same as `typeid(stuff).name

Currently no. It's represented differently in the end tree.