hiddenfields.c

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

struct TypedMethodMetadata {
  int type;  // could be something similar to Cinder's TypedMethodDef
  const char ml_name[100];
};
typedef struct TypedMethodMetadata TypedMethodMetadata;

// Same as CPython
struct PyMethodDef {
    const char  *ml_name;
    void        *ml_meth;
    int         ml_flags;
    const char  *ml_doc;
};
typedef struct PyMethodDef PyMethodDef;

// Can be generated by the clinic
TypedMethodMetadata foo = {12345, "method.foo"};
TypedMethodMetadata bar = {67890, "method.bar"};

PyMethodDef defs[] = {
  // Can be generated by the clinic
  {(const char*)foo.ml_name, NULL, 0, "foo doc"},
  {(const char*)bar.ml_name, NULL, 0, "bar doc"},
  {NULL, NULL},
};

int main() {
  for (int i = 0; defs[i].ml_name != NULL; i++) {
    TypedMethodMetadata* def = (TypedMethodMetadata*)(defs[i].ml_name - offsetof(TypedMethodMetadata, ml_name));
    fprintf(stderr, "type is %10d\tname is %s\tdoc is %s\n", def->type, defs[i].ml_name, defs[i].ml_doc);
  }
}