Hello,
I have the following declaration:
const GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS* = 35661
type
P = proc(param: cuint, name: string)
Capability_t = object
param: cuint
name: string
get: P
template capability(p: cuint, g: P): Capability_t =
Capability_t(
param: p,
name: p.astToStr,
# name: g.astToStr,
get:g
)TIA
I don't understand what you're trying to achieve, this looks cursed to me. A const is just a value, its identifier is extremely short-lived, I'm not sure you could even access it from a macro. Better write some regular code using types to store necessary information.
I suppose the const values are not unique, since if it were so you could just store strings in a table or hardcode them inside the template? If they aren't unique you'll need to find a way to tie the name to the value in an object at instantiation time.
I think the proper approach is to define a set of enums for all the consts at hand and store their cuint values in an enum-indexed array.
I don't understand what you're trying to achieve, this looks cursed to me.
The goal is to go through an array of these constants and use them to obtain information via a function call. For each of these values, the output would show the name of the constant identifier and the corresponding values.
I suppose the const values are not unique, since if it were so you could just store strings in a table or hardcode them inside the template?
Sure, I can and am hardcoding these unique values. I have:
let capabilities = [
Capability_t(param: GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, name: "GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS", get:GLContextParamInt_1),
...]
let capabilities = [
capability(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, GLContextParamInt_1),
...
]I think the proper approach is to define a set of enums for all the consts at hand and store their cuint values in an enum-indexed array.
Don't require all of them. And as I said, this is not my code, so I am not going to redefine things with an enum.
I'm not sure you could even access it from a macro.
I have confirmed it so. p.treeRepr() shows IntLit 35661 and no strVal exists for this node.
So it seem no magic incantation is possible. Pity.
I had already tried that. So
template cap1(pp: untyped) =
echo fmt"*********************** {astToStr(pp)}"
cap1(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS)
*********************** ppWorks fine without fmt:
const
GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS = 34930
template cap1(pp: untyped) =
echo "*********************** " & astToStr(pp)
cap1(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS)which is common knowledge.
I can confirm that with concatenation`&` it works. But with fmt it does not. Must be some interaction between the templates and the parameters.
Thanks.
which is common knowledge.