86 lines
2.3 KiB
C
86 lines
2.3 KiB
C
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#include <stdlib.h>
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#include <stdint.h>
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#include <string.h>
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#include <assert.h>
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#include "nlr.h"
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#include "misc.h"
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#include "mpconfig.h"
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#include "obj.h"
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#include "runtime.h"
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#include "map.h"
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typedef struct _mp_obj_class_t {
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mp_obj_base_t base;
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mp_map_t *locals;
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} mp_obj_class_t;
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// args are in reverse order in the array
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mp_obj_t class_call_n(mp_obj_t self_in, int n_args, const mp_obj_t *args) {
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// instantiate an instance of a class
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mp_obj_class_t *self = self_in;
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// make instance
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mp_obj_t o = mp_obj_new_instance(self_in);
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// look for __init__ function
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mp_map_elem_t *init_fn = mp_qstr_map_lookup(self->locals, qstr_from_str_static("__init__"), false);
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if (init_fn != NULL) {
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// call __init__ function
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mp_obj_t init_ret;
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if (n_args == 0) {
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init_ret = rt_call_function_n(init_fn->value, 1, (mp_obj_t*)&o);
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} else {
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mp_obj_t *args2 = m_new(mp_obj_t, n_args + 1);
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memcpy(args2, args, n_args * sizeof(mp_obj_t));
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args2[n_args] = o;
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init_ret = rt_call_function_n(init_fn->value, n_args + 1, args2);
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m_free(args2);
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}
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if (init_ret != mp_const_none) {
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nlr_jump(mp_obj_new_exception_msg_1_arg(rt_q_TypeError, "__init__() should return None, not '%s'", mp_obj_get_type_str(init_ret)));
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}
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} else {
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// TODO
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if (n_args != 0) {
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nlr_jump(mp_obj_new_exception_msg_1_arg(rt_q_TypeError, "function takes 0 positional arguments but %d were given", (void*)(machine_int_t)n_args));
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}
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}
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return o;
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}
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mp_map_t *mp_obj_class_get_locals(mp_obj_t self_in) {
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assert(MP_OBJ_IS_TYPE(self_in, &class_type));
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mp_obj_class_t *self = self_in;
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return self->locals;
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}
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const mp_obj_type_t class_type = {
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{ &mp_const_type },
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"class",
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NULL, // print
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class_call_n, // call_n
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NULL, // unary_op
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NULL, // binary_op
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NULL, // getiter
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NULL, // iternext
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{{NULL, NULL},}, // method list
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};
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mp_obj_t mp_obj_new_class(mp_map_t *class_locals) {
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mp_obj_class_t *o = m_new_obj(mp_obj_class_t);
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o->base.type = &class_type;
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o->locals = class_locals;
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return o;
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}
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// temporary way of making C modules
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// hack: use class to mimic a module
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mp_obj_t mp_module_new(void) {
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return mp_obj_new_class(mp_map_new(MP_MAP_QSTR, 0));
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}
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