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35 results

synth.py

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  • objattrtuple.c 3.19 KiB
    /*
     * This file is part of the Micro Python project, http://micropython.org/
     *
     * The MIT License (MIT)
     *
     * Copyright (c) 2015 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 "py/objtuple.h"
    
    #if MICROPY_PY_ATTRTUPLE || MICROPY_PY_COLLECTIONS
    
    // this helper function is used by collections.namedtuple
    #if !MICROPY_PY_COLLECTIONS
    STATIC
    #endif
    void mp_obj_attrtuple_print_helper(const mp_print_t *print, const qstr *fields, mp_obj_tuple_t *o) {
        mp_print_str(print, "(");
        for (mp_uint_t i = 0; i < o->len; i++) {
            if (i > 0) {
                mp_print_str(print, ", ");
            }
            mp_printf(print, "%q=", fields[i]);
            mp_obj_print_helper(print, o->items[i], PRINT_REPR);
        }
        mp_print_str(print, ")");
    }
    
    #endif
    
    #if MICROPY_PY_ATTRTUPLE
    
    STATIC void mp_obj_attrtuple_print(const mp_print_t *print, mp_obj_t o_in, mp_print_kind_t kind) {
        (void)kind;
        mp_obj_tuple_t *o = o_in;
        const qstr *fields = (const qstr*)o->items[o->len];
        mp_obj_attrtuple_print_helper(print, fields, o);
    }
    
    STATIC void mp_obj_attrtuple_attr(mp_obj_t self_in, qstr attr, mp_obj_t *dest) {
        if (dest[0] == MP_OBJ_NULL) {
            // load attribute
            mp_obj_tuple_t *self = self_in;
            mp_uint_t len = self->len;
            const qstr *fields = (const qstr*)self->items[len];
            for (mp_uint_t i = 0; i < len; i++) {
                if (fields[i] == attr) {
                    dest[0] = self->items[i];
                    return;
                }
            }
        }
    }
    
    mp_obj_t mp_obj_new_attrtuple(const qstr *fields, mp_uint_t n, const mp_obj_t *items) {
        mp_obj_tuple_t *o = m_new_obj_var(mp_obj_tuple_t, mp_obj_t, n + 1);
        o->base.type = &mp_type_attrtuple;
        o->len = n;
        for (mp_uint_t i = 0; i < n; i++) {
            o->items[i] = items[i];
        }
        o->items[n] = (void*)fields;
        return o;
    }
    
    const mp_obj_type_t mp_type_attrtuple = {
        { &mp_type_type },
        .name = MP_QSTR_tuple, // reuse tuple to save on a qstr
        .print = mp_obj_attrtuple_print,
        .unary_op = mp_obj_tuple_unary_op,
        .binary_op = mp_obj_tuple_binary_op,
        .attr = mp_obj_attrtuple_attr,
        .subscr = mp_obj_tuple_subscr,
        .getiter = mp_obj_tuple_getiter,
    };
    
    #endif // MICROPY_PY_ATTRTUPLE