attempt to redefine parse_str for an enum about mlib HOT 5 CLOSED

I get the following warning when I try your code:

error: incompatible type for argument 1 of ‘color_parse_str’
                GET_STR(color_get_str), PARSE_STR(color_parse_str))

Indeed, color_parse_str expects a T* instead of a T:
bool color_parse_str(color_t *ptr, const char str[], const char **endptr) {
So your association between the operator and the method in the oplist shall be defined as:
PARSE_STR(color_parse_str M_IPTR)
(Later you can use also PARSE_STR(API_2(color_parse_str)) but it is still WIP and is not working for tuple)

from mlib.

I think the warning is different because I was using clang.
I'm not sure to understand your explanation. In m-core.h I can see parse_str methods where the first argument is something like type *. Maybe this work if type is a M-LIB container (so an array[1]-type) but I can't imagine how to manage it with a native type.
Can you give some hint how to manage this using the actual API? Thanks

from mlib.

Ok, sorry I spotted only now the note on the usage of the M_IPTR keywork in the OPLIST definition.

I'm wondering what's the aim of the API_2 mechanism.

from mlib.

The API_* mechanism is a more general mechanism to adapt the call of the operator to the needs of the methods. It defines how to call effectively the method:

void method_by_ref(type out, ...);           // API_0
void method_by_addr(type *out, ...);     // API_2
out = method_by_ret_value(...);            // API_4

API is not the right term for this, but I wasn't able to find the right term. API CALL ?
It is a WIP as it is not supported by all the library yet.

M_IPTR is the current way of doing it. But I wasn't able to generalize the trick used for this to support the method_by_ret_value.

In your example, you just need to write:

#define COLOR_OPLIST                                                           \
    M_OPEXTEND(M_DEFAULT_OPLIST, OUT_STR(color_out_str), IN_STR(color_in_str), \
               GET_STR(color_get_str), PARSE_STR(color_parse_str M_IPTR))

from mlib.

Ok, many thanks.

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