HPy methods

hpy.h

#define METH_NOARGS 1
#define METH_O 2
typedef void* HPyContext;
typedef long HPy;

typedef HPy (*HPyMeth_NOARGS)(HPyContext, HPy);
typedef HPy (*HPyMeth_O)(HPyContext, HPy, HPy);


typedef struct {
    const char *name;
    union {
        void *pfunc;
        HPyMeth_NOARGS meth_noargs;
        HPyMeth_O meth_o;
    };
    int flags;
} HPyMethodDef;

typedef struct {
    const char *name;
    int size;
    HPyMethodDef **methods;
} HPyModuleDef;

mymethods.c

#include "hpy.h"

static HPy foo_impl(HPyContext ctx, HPy self) {
}


HPyMethodDef foo = {
    .name = "foo",
    .meth_noargs = foo_impl,
    .flags = METH_NOARGS
};


static HPy bar_impl(HPyContext ctx, HPy self, HPy arg) {
}


HPyMethodDef bar = {
    .name = "bar",
    .meth_o = bar_impl,
    .flags = METH_O
};

mymodule.c

#include <stddef.h>
#include <stdio.h>
#include "hpy.h"

// defined in mymethods.c
HPyMethodDef foo;
HPyMethodDef bar;

static HPyMethodDef *Methods[] = {&foo, &bar, NULL};

static HPyModuleDef moduledef = {
    .name = "MyModule",
    .size = -1,
    .methods = Methods
};


int main(void)
{
    HPyMethodDef **def = moduledef.methods;
    while (*def) {
        printf("name = %s, flags = %d, pfunc = %p\n", (*def)->name, (*def)->flags, (*def)->pfunc);
        def++;
    }
}