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modmath.c

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  • objbool.c 1.98 KiB
    #include <stdlib.h>
    
    #include "nlr.h"
    #include "misc.h"
    #include "mpconfig.h"
    #include "qstr.h"
    #include "obj.h"
    #include "runtime0.h"
    #include "runtime.h"
    
    typedef struct _mp_obj_bool_t {
        mp_obj_base_t base;
        bool value;
    } mp_obj_bool_t;
    
    STATIC void bool_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t self_in, mp_print_kind_t kind) {
        mp_obj_bool_t *self = self_in;
        if (self->value) {
            print(env, "True");
        } else {
            print(env, "False");
        }
    }
    
    STATIC mp_obj_t bool_make_new(mp_obj_t type_in, uint n_args, uint n_kw, const mp_obj_t *args) {
        // TODO check n_kw == 0
    
        switch (n_args) {
            case 0: return mp_const_false;
            case 1: if (mp_obj_is_true(args[0])) { return mp_const_true; } else { return mp_const_false; }
            default: nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_TypeError, "bool takes at most 1 argument, %d given", n_args));
        }
    }
    
    STATIC mp_obj_t bool_unary_op(int op, mp_obj_t o_in) {
        machine_int_t value = ((mp_obj_bool_t*)o_in)->value;
        switch (op) {
            case MP_UNARY_OP_BOOL: return o_in;
            case MP_UNARY_OP_POSITIVE: return MP_OBJ_NEW_SMALL_INT(value);
            case MP_UNARY_OP_NEGATIVE: return MP_OBJ_NEW_SMALL_INT(-value);
            case MP_UNARY_OP_INVERT:
            default: // no other cases
                return MP_OBJ_NEW_SMALL_INT(~value);
        }
    }
    
    STATIC mp_obj_t bool_binary_op(int op, mp_obj_t lhs_in, mp_obj_t rhs_in) {
        if (MP_BINARY_OP_OR <= op && op <= MP_BINARY_OP_NOT_EQUAL) {
            return mp_binary_op(op, MP_OBJ_NEW_SMALL_INT((machine_int_t)mp_obj_is_true(lhs_in)), rhs_in);
        }
        // operation not supported
        return MP_OBJ_NULL;
    }
    
    const mp_obj_type_t mp_type_bool = {
        { &mp_type_type },
        .name = MP_QSTR_bool,
        .print = bool_print,
        .make_new = bool_make_new,
        .unary_op = bool_unary_op,
        .binary_op = bool_binary_op,
    };
    
    const mp_obj_bool_t mp_const_false_obj = {{&mp_type_bool}, false};
    const mp_obj_bool_t mp_const_true_obj = {{&mp_type_bool}, true};