On Tuesday, 31 July 2018 at 07:17:34 UTC, Shachar Shemesh wrote:
I'm trying to figure out what's the signature of the built-in
assert. It does not seem that I can define a similar function
myself.
Help??
I'm not sure why you want a different assert, but you can
consider these options.
1) Assign your own assert handler:
https://github.com/dlang/druntime/blob/52d3fe02272d16d32c150ce6f78bc00241a9dd5d/src/core/exception.d#L393
2) You can provide your own implementations of the runtime hooks
at
https://github.com/dlang/druntime/blob/cb5efa9854775c5a72acd6870083b16e5ebba369/src/core/exception.d#L628
extern(C) void _d_assertp(immutable(char)* file, uint line)
{
import core.stdc.stdio;
printf("Houston, we have a problem at %s:%u\n", file, line);
}
void main()
{
assert(false);
}
https://run.dlang.io/is/QZEO9W
3) -betterC seems to forward runtime assertions to the C
implementation. See https://run.dlang.io/is/QZEO9W
For that you have to provide a new implementation of `__assert`:
extern(C) void __assert(const char *msg, const char *file, int
line)
{
import core.stdc.stdio;
printf("Houston, we have a problem at %s:%u\n", file, line);
}
extern(C) void main()
{
assert(false);
}
https://run.dlang.io/is/D5JxCT
4) Otherwise can't you just implement two `myAssert` overloads?
`void assert(bool condition, string msg);`
`void assert(bool condition)`
Please clarify if I'm missing the point.
Mike
