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py: Pass keyword args to native functions by using the stack.

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Passing keyword arguments to a native function now no longer requires
heap memory.  The kw_args map is created on the stack using the args
array as the table.
This commit is contained in:
Damien George 2014-02-08 18:53:41 +00:00
parent 9a58d760c3
commit 0a587b85fb
1 changed files with 4 additions and 8 deletions
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12
py/objfun.c
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@ -54,15 +54,11 @@ mp_obj_t fun_native_call(mp_obj_t self_in, uint n_args, uint n_kw, const mp_obj_
if (self->is_kw) {
// function allows keywords
// TODO if n_kw==0 then don't allocate any memory for map (either pass NULL or allocate it on the heap)
mp_map_t *kw_args = mp_map_new(n_kw);
for (int i = 0; i < 2 * n_kw; i += 2) {
mp_map_lookup(kw_args, args[n_args + i], MP_MAP_LOOKUP_ADD_IF_NOT_FOUND)->value = args[n_args + i + 1];
}
mp_obj_t res = ((mp_fun_kw_t)self->fun)(n_args, args, kw_args);
// TODO clean up kw_args
// we create a map directly from the given args array
mp_map_t kw_args;
mp_map_init_fixed_table(&kw_args, n_kw, args + n_args);
return res;
return ((mp_fun_kw_t)self->fun)(n_args, args, &kw_args);
} else if (self->n_args_min <= 3 && self->n_args_min == self->n_args_max) {
// function requires a fixed number of arguments