Is there a way to bypass the file and line into D assert function ?

Jacob Carlborg doob at me.com
Fri Jul 19 16:00:33 UTC 2019


On 2019-07-19 17:30, Newbie2019 wrote:
> for example:
> 
> void ASSERT(string fmt, string file = __FILE_FULL_PATH__, size_t line = 
> __LINE__, T...) (bool c, scope T a)  @nogc {
>     assert(c, string, file, line);
> }
> 
> but i get this error:
> 
> error.d(39): Error: found file when expecting )
> error.d(39): Error: found ) when expecting ; following statement
> error.d(39): Deprecation: use { } for an empty statement, not ;
> 
> I want d to print the error message with some format information, and 
> show the right file and line for the original location.
> 
> Is it doable ?

No, not as far as I know. But you can throw an `AssertError` explicitly, 
which is what `assert` does when it fails. This allows to pass the file 
and line information [1]. Or call `onAssertError` which if called first, 
when an `assert` fails [2].

[1] 
https://github.com/dlang/druntime/blob/3620736bc88129b65f9a01290189de617a6c3b07/src/core/exception.d#L81-L84

[2] 
https://github.com/dlang/druntime/blob/3620736bc88129b65f9a01290189de617a6c3b07/src/core/exception.d#L417-L449

-- 
/Jacob Carlborg


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