kopia lustrzana https://github.com/micropython/micropython
106 wiersze
4.4 KiB
C
106 wiersze
4.4 KiB
C
/*
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* This file is part of the Micro Python project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2013, 2014 Damien P. George
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <stdlib.h>
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#include <assert.h>
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#include "mpconfig.h"
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#include "nlr.h"
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#include "misc.h"
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#include "qstr.h"
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#include "obj.h"
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#include "runtime.h"
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void mp_arg_check_num(uint n_args, uint n_kw, uint n_args_min, uint n_args_max, bool takes_kw) {
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// TODO maybe take the function name as an argument so we can print nicer error messages
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if (n_kw && !takes_kw) {
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nlr_raise(mp_obj_new_exception_msg(&mp_type_TypeError, "function does not take keyword arguments"));
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}
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if (n_args_min == n_args_max) {
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if (n_args != n_args_min) {
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nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_TypeError,
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"function takes %d positional arguments but %d were given",
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n_args_min, n_args));
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}
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} else {
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if (n_args < n_args_min) {
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nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_TypeError,
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"function missing %d required positional arguments",
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n_args_min - n_args));
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} else if (n_args > n_args_max) {
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nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_TypeError,
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"function expected at most %d arguments, got %d",
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n_args_max, n_args));
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}
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}
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}
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void mp_arg_parse_all(uint n_pos, const mp_obj_t *pos, mp_map_t *kws, uint n_allowed, const mp_arg_t *allowed, mp_arg_val_t *out_vals) {
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uint pos_found = 0, kws_found = 0;
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for (uint i = 0; i < n_allowed; i++) {
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mp_obj_t given_arg;
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if (i < n_pos) {
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if (allowed[i].flags & MP_ARG_KW_ONLY) {
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goto extra_positional;
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}
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pos_found++;
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given_arg = pos[i];
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} else {
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mp_map_elem_t *kw = mp_map_lookup(kws, MP_OBJ_NEW_QSTR(allowed[i].qstr), MP_MAP_LOOKUP);
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if (kw == NULL) {
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if (allowed[i].flags & MP_ARG_REQUIRED) {
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nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_TypeError, "'%s' argument required", qstr_str(allowed[i].qstr)));
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}
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out_vals[i] = allowed[i].defval;
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continue;
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} else {
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kws_found++;
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given_arg = kw->value;
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}
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}
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if ((allowed[i].flags & MP_ARG_KIND_MASK) == MP_ARG_BOOL) {
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out_vals[i].u_bool = mp_obj_is_true(given_arg);
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} else if ((allowed[i].flags & MP_ARG_KIND_MASK) == MP_ARG_INT) {
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out_vals[i].u_int = mp_obj_get_int(given_arg);
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} else if ((allowed[i].flags & MP_ARG_KIND_MASK) == MP_ARG_OBJ) {
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out_vals[i].u_obj = given_arg;
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} else {
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assert(0);
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}
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}
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if (pos_found < n_pos) {
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// TODO better error message
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extra_positional:
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nlr_raise(mp_obj_new_exception_msg(&mp_type_TypeError, "extra positional arguments given"));
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}
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if (kws_found < kws->used) {
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// TODO better error message
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nlr_raise(mp_obj_new_exception_msg(&mp_type_TypeError, "extra keyword arguments given"));
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}
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}
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