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/*

* This file is part of the Micro Python project, http://micropython.org/

*

* The MIT License (MIT)

*

* Copyright (c) 2013, 2014 Damien P. George

*

* Permission is hereby granted, free of charge, to any person obtaining a copy

* of this software and associated documentation files (the "Software"), to deal

* in the Software without restriction, including without limitation the rights

* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

* copies of the Software, and to permit persons to whom the Software is

* furnished to do so, subject to the following conditions:

*

* The above copyright notice and this permission notice shall be included in

* all copies or substantial portions of the Software.

*

* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

* THE SOFTWARE.

*/

#include <stdlib.h>

#include <assert.h>

#include "py/nlr.h"

#include "py/runtime.h"

void mp_arg_check_num(size_t n_args, size_t n_kw, size_t n_args_min, size_t n_args_max, bool takes_kw) {

// TODO maybe take the function name as an argument so we can print nicer error messages

if (n_kw && !takes_kw) {

if (MICROPY_ERROR_REPORTING == MICROPY_ERROR_REPORTING_TERSE) {

mp_arg_error_terse_mismatch();

} else {

nlr_raise(mp_obj_new_exception_msg(&mp_type_TypeError,

"function does not take keyword arguments"));

}

}

if (n_args_min == n_args_max) {

if (n_args != n_args_min) {

if (MICROPY_ERROR_REPORTING == MICROPY_ERROR_REPORTING_TERSE) {

mp_arg_error_terse_mismatch();

} else {

nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_TypeError,

"function takes %d positional arguments but %d were given",

n_args_min, n_args));

}

}

} else {

if (n_args < n_args_min) {

if (MICROPY_ERROR_REPORTING == MICROPY_ERROR_REPORTING_TERSE) {

mp_arg_error_terse_mismatch();

} else {

nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_TypeError,

"function missing %d required positional arguments",

n_args_min - n_args));

}

} else if (n_args > n_args_max) {

if (MICROPY_ERROR_REPORTING == MICROPY_ERROR_REPORTING_TERSE) {

mp_arg_error_terse_mismatch();

} else {

nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_TypeError,

"function expected at most %d arguments, got %d",

n_args_max, n_args));

}

}

}

}

void mp_arg_parse_all(size_t n_pos, const mp_obj_t *pos, mp_map_t *kws, size_t n_allowed, const mp_arg_t *allowed, mp_arg_val_t *out_vals) {

size_t pos_found = 0, kws_found = 0;

for (size_t i = 0; i < n_allowed; i++) {

mp_obj_t given_arg;

if (i < n_pos) {

if (allowed[i].flags & MP_ARG_KW_ONLY) {

goto extra_positional;

}

pos_found++;

given_arg = pos[i];

} else {

mp_map_elem_t *kw = mp_map_lookup(kws, MP_OBJ_NEW_QSTR(allowed[i].qst), MP_MAP_LOOKUP);

if (kw == NULL) {

if (allowed[i].flags & MP_ARG_REQUIRED) {

if (MICROPY_ERROR_REPORTING == MICROPY_ERROR_REPORTING_TERSE) {

mp_arg_error_terse_mismatch();

} else {

nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_TypeError,

"'%q' argument required", allowed[i].qst));

}

}

out_vals[i] = allowed[i].defval;

continue;

} else {

kws_found++;

given_arg = kw->value;

}

}

if ((allowed[i].flags & MP_ARG_KIND_MASK) == MP_ARG_BOOL) {

out_vals[i].u_bool = mp_obj_is_true(given_arg);

} else if ((allowed[i].flags & MP_ARG_KIND_MASK) == MP_ARG_INT) {

out_vals[i].u_int = mp_obj_get_int(given_arg);

} else if ((allowed[i].flags & MP_ARG_KIND_MASK) == MP_ARG_OBJ) {

out_vals[i].u_obj = given_arg;

} else {

assert(0);

}

}

if (pos_found < n_pos) {

extra_positional:

if (MICROPY_ERROR_REPORTING == MICROPY_ERROR_REPORTING_TERSE) {

mp_arg_error_terse_mismatch();

} else {

// TODO better error message

nlr_raise(mp_obj_new_exception_msg(&mp_type_TypeError,

"extra positional arguments given"));

}

}

if (kws_found < kws->used) {

if (MICROPY_ERROR_REPORTING == MICROPY_ERROR_REPORTING_TERSE) {

mp_arg_error_terse_mismatch();

} else {

// TODO better error message

nlr_raise(mp_obj_new_exception_msg(&mp_type_TypeError,

"extra keyword arguments given"));

}

}

}

void mp_arg_parse_all_kw_array(size_t n_pos, size_t n_kw, const mp_obj_t *args, size_t n_allowed, const mp_arg_t *allowed, mp_arg_val_t *out_vals) {

mp_map_t kw_args;

mp_map_init_fixed_table(&kw_args, n_kw, args + n_pos);

mp_arg_parse_all(n_pos, args, &kw_args, n_allowed, allowed, out_vals);

}

#if MICROPY_ERROR_REPORTING == MICROPY_ERROR_REPORTING_TERSE || _MSC_VER

NORETURN void mp_arg_error_terse_mismatch(void) {

nlr_raise(mp_obj_new_exception_msg(&mp_type_TypeError, "argument num/types mismatch"));

}

#endif

#if MICROPY_CPYTHON_COMPAT

NORETURN void mp_arg_error_unimpl_kw(void) {

mp_not_implemented("keyword argument(s) not yet implemented - use normal args instead");

}

#endif