Re: Trying to get current function name results in compiler error with __traits
On Friday, 7 December 2018 at 02:37:34 UTC, Arun Chandrasekaran
wrote:
I'm trying to get the current function name and apparently the
commented line errors out.
What am I doing wrong?
https://run.dlang.io/is/EGsRU2
```
#!/usr/bin/rdmd
void main()
{
import std.experimental.all;
void foo() {
// __traits(identifier, mixin(__FUNCTION__)).writeln;
// compilation error
__FUNCTION__.split('.')[$-1].writeln;
}
__traits(identifier, mixin(__FUNCTION__)).writeln;
__FUNCTION__.split('.')[$-1].writeln;
foo();
}
```
Looks like this will do the trick https://run.dlang.io/is/cX3S37
Re: Trying to get current function name results in compiler error with __traits
On Fri, 07 Dec 2018 02:37:34 +, Arun Chandrasekaran wrote:
> I'm trying to get the current function name and apparently the commented
> line errors out.
>
> What am I doing wrong?
Referring to nested functions is weird.
Dotted identifiers let you traverse aggregates. Modules, C++ namespaces
(ugh), enums, structs, identifiers, unions, that sort of thing. They
*don't* let you traverse functions to refer to symbols defined inside
those functions.
*Separately*, nested functions have names that look like dotted
identifiers. But you can't use that to refer to them, because that would
make it *very* awkward to do symbol lookup.
For example:
struct Foo { int bar; }
Foo test()
{
void bar() { }
writeln(&test.bar);
return Foo();
}
Should the `writeln` line invoke the `test` function, get the `bar` field
from its result, and take its address? Or should it take the address of
the nested function `bar`?
Trying to get current function name results in compiler error with __traits
I'm trying to get the current function name and apparently the
commented line errors out.
What am I doing wrong?
https://run.dlang.io/is/EGsRU2
```
#!/usr/bin/rdmd
void main()
{
import std.experimental.all;
void foo() {
// __traits(identifier, mixin(__FUNCTION__)).writeln; //
compilation error
__FUNCTION__.split('.')[$-1].writeln;
}
__traits(identifier, mixin(__FUNCTION__)).writeln;
__FUNCTION__.split('.')[$-1].writeln;
foo();
}
```
