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string.py

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  • Forked from card10 / firmware
    Source project has a limited visibility.
    objclosure.c 1.63 KiB
    #include <string.h>
    
    #include "nlr.h"
    #include "misc.h"
    #include "mpconfig.h"
    #include "qstr.h"
    #include "obj.h"
    #include "runtime.h"
    
    typedef struct _mp_obj_closure_t {
        mp_obj_base_t base;
        mp_obj_t fun;
        uint n_closed;
        mp_obj_t *closed;
    } mp_obj_closure_t;
    
    mp_obj_t closure_call(mp_obj_t self_in, uint n_args, uint n_kw, const mp_obj_t *args) {
        mp_obj_closure_t *self = self_in;
    
        // need to concatenate closed-over-vars and args
    
        int n_total = self->n_closed + n_args + 2 * n_kw;
        if (n_total <= 5) {
            // use stack to allocate temporary args array
            mp_obj_t args2[5];
            memcpy(args2, self->closed, self->n_closed * sizeof(mp_obj_t));
            memcpy(args2 + self->n_closed, args, (n_args + 2 * n_kw) * sizeof(mp_obj_t));
            return mp_call_function_n_kw(self->fun, self->n_closed + n_args, n_kw, args2);
        } else {
            // use heap to allocate temporary args array
            mp_obj_t *args2 = m_new(mp_obj_t, n_total);
            memcpy(args2, self->closed, self->n_closed * sizeof(mp_obj_t));
            memcpy(args2 + self->n_closed, args, (n_args + 2 * n_kw) * sizeof(mp_obj_t));
            mp_obj_t res = mp_call_function_n_kw(self->fun, self->n_closed + n_args, n_kw, args2);
            m_del(mp_obj_t, args2, n_total);
            return res;
        }
    }
    
    const mp_obj_type_t closure_type = {
        { &mp_type_type },
        .name = MP_QSTR_closure,
        .call = closure_call,
    };
    
    mp_obj_t mp_obj_new_closure(mp_obj_t fun, mp_obj_t closure_tuple) {
        mp_obj_closure_t *o = m_new_obj(mp_obj_closure_t);
        o->base.type = &closure_type;
        o->fun = fun;
        mp_obj_tuple_get(closure_tuple, &o->n_closed, &o->closed);
        return o;
    }