kopia lustrzana https://github.com/micropython/micropython
313 wiersze
11 KiB
C
313 wiersze
11 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 <stdint.h>
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#include <string.h>
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#include <stdio.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 "parsenumbase.h"
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#include "obj.h"
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#include "mpz.h"
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#include "objint.h"
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#include "runtime0.h"
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#include "runtime.h"
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#if MICROPY_LONGINT_IMPL == MICROPY_LONGINT_IMPL_MPZ
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STATIC mp_obj_int_t *mp_obj_int_new_mpz(void) {
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mp_obj_int_t *o = m_new_obj(mp_obj_int_t);
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o->base.type = &mp_type_int;
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mpz_init_zero(&o->mpz);
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return o;
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}
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// This routine expects you to pass in a buffer and size (in *buf and buf_size).
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// If, for some reason, this buffer is too small, then it will allocate a
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// buffer and return the allocated buffer and size in *buf and *buf_size. It
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// is the callers responsibility to free this allocated buffer.
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//
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// The resulting formatted string will be returned from this function and the
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// formatted size will be in *fmt_size.
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//
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// This particular routine should only be called for the mpz representation of the int.
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char *mp_obj_int_formatted_impl(char **buf, int *buf_size, int *fmt_size, mp_obj_t self_in,
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int base, const char *prefix, char base_char, char comma) {
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assert(MP_OBJ_IS_TYPE(self_in, &mp_type_int));
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mp_obj_int_t *self = self_in;
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uint needed_size = mpz_as_str_size_formatted(&self->mpz, base, prefix, comma);
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if (needed_size > *buf_size) {
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*buf = m_new(char, needed_size);
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*buf_size = needed_size;
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}
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char *str = *buf;
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*fmt_size = mpz_as_str_inpl(&self->mpz, base, prefix, base_char, comma, str);
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return str;
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}
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bool mp_obj_int_is_positive(mp_obj_t self_in) {
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if (MP_OBJ_IS_SMALL_INT(self_in)) {
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return MP_OBJ_SMALL_INT_VALUE(self_in) >= 0;
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}
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mp_obj_int_t *self = self_in;
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return !self->mpz.neg;
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}
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mp_obj_t mp_obj_int_unary_op(int op, mp_obj_t o_in) {
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mp_obj_int_t *o = o_in;
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switch (op) {
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case MP_UNARY_OP_BOOL: return MP_BOOL(!mpz_is_zero(&o->mpz));
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case MP_UNARY_OP_POSITIVE: return o_in;
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case MP_UNARY_OP_NEGATIVE: { mp_obj_int_t *o2 = mp_obj_int_new_mpz(); mpz_neg_inpl(&o2->mpz, &o->mpz); return o2; }
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case MP_UNARY_OP_INVERT: { mp_obj_int_t *o2 = mp_obj_int_new_mpz(); mpz_not_inpl(&o2->mpz, &o->mpz); return o2; }
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default: return NULL; // op not supported
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}
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}
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mp_obj_t mp_obj_int_binary_op(int op, mp_obj_t lhs_in, mp_obj_t rhs_in) {
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const mpz_t *zlhs;
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const mpz_t *zrhs;
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mpz_t z_int;
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mpz_dig_t z_int_dig[MPZ_NUM_DIG_FOR_INT];
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// lhs could be a small int (eg small-int + mpz)
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if (MP_OBJ_IS_SMALL_INT(lhs_in)) {
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mpz_init_fixed_from_int(&z_int, z_int_dig, MPZ_NUM_DIG_FOR_INT, MP_OBJ_SMALL_INT_VALUE(lhs_in));
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zlhs = &z_int;
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} else if (MP_OBJ_IS_TYPE(lhs_in, &mp_type_int)) {
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zlhs = &((mp_obj_int_t*)lhs_in)->mpz;
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} else {
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// unsupported type
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return MP_OBJ_NOT_SUPPORTED;
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}
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// if rhs is small int, then lhs was not (otherwise mp_binary_op handles it)
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if (MP_OBJ_IS_SMALL_INT(rhs_in)) {
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mpz_init_fixed_from_int(&z_int, z_int_dig, MPZ_NUM_DIG_FOR_INT, MP_OBJ_SMALL_INT_VALUE(rhs_in));
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zrhs = &z_int;
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} else if (MP_OBJ_IS_TYPE(rhs_in, &mp_type_int)) {
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zrhs = &((mp_obj_int_t*)rhs_in)->mpz;
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#if MICROPY_ENABLE_FLOAT
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} else if (MP_OBJ_IS_TYPE(rhs_in, &mp_type_float)) {
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return mp_obj_float_binary_op(op, mpz_as_float(zlhs), rhs_in);
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} else if (MP_OBJ_IS_TYPE(rhs_in, &mp_type_complex)) {
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return mp_obj_complex_binary_op(op, mpz_as_float(zlhs), 0, rhs_in);
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#endif
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} else {
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// delegate to generic function to check for extra cases
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return mp_obj_int_binary_op_extra_cases(op, lhs_in, rhs_in);
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}
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if (0) {
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#if MICROPY_ENABLE_FLOAT
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} else if (op == MP_BINARY_OP_TRUE_DIVIDE || op == MP_BINARY_OP_INPLACE_TRUE_DIVIDE) {
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mp_float_t flhs = mpz_as_float(zlhs);
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mp_float_t frhs = mpz_as_float(zrhs);
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return mp_obj_new_float(flhs / frhs);
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#endif
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} else if (op <= MP_BINARY_OP_INPLACE_POWER) {
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mp_obj_int_t *res = mp_obj_int_new_mpz();
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switch (op) {
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case MP_BINARY_OP_ADD:
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case MP_BINARY_OP_INPLACE_ADD:
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mpz_add_inpl(&res->mpz, zlhs, zrhs);
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break;
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case MP_BINARY_OP_SUBTRACT:
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case MP_BINARY_OP_INPLACE_SUBTRACT:
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mpz_sub_inpl(&res->mpz, zlhs, zrhs);
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break;
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case MP_BINARY_OP_MULTIPLY:
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case MP_BINARY_OP_INPLACE_MULTIPLY:
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mpz_mul_inpl(&res->mpz, zlhs, zrhs);
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break;
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case MP_BINARY_OP_FLOOR_DIVIDE:
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case MP_BINARY_OP_INPLACE_FLOOR_DIVIDE: {
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mpz_t rem; mpz_init_zero(&rem);
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mpz_divmod_inpl(&res->mpz, &rem, zlhs, zrhs);
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if (zlhs->neg != zrhs->neg) {
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if (!mpz_is_zero(&rem)) {
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mpz_t mpzone; mpz_init_from_int(&mpzone, -1);
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mpz_add_inpl(&res->mpz, &res->mpz, &mpzone);
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}
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}
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mpz_deinit(&rem);
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break;
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}
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case MP_BINARY_OP_MODULO:
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case MP_BINARY_OP_INPLACE_MODULO: {
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mpz_t quo; mpz_init_zero(&quo);
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mpz_divmod_inpl(&quo, &res->mpz, zlhs, zrhs);
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mpz_deinit(&quo);
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// Check signs and do Python style modulo
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if (zlhs->neg != zrhs->neg) {
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mpz_add_inpl(&res->mpz, &res->mpz, zrhs);
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}
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break;
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}
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case MP_BINARY_OP_AND:
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case MP_BINARY_OP_INPLACE_AND:
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mpz_and_inpl(&res->mpz, zlhs, zrhs);
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break;
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case MP_BINARY_OP_OR:
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case MP_BINARY_OP_INPLACE_OR:
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mpz_or_inpl(&res->mpz, zlhs, zrhs);
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break;
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case MP_BINARY_OP_XOR:
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case MP_BINARY_OP_INPLACE_XOR:
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mpz_xor_inpl(&res->mpz, zlhs, zrhs);
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break;
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case MP_BINARY_OP_LSHIFT:
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case MP_BINARY_OP_INPLACE_LSHIFT:
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case MP_BINARY_OP_RSHIFT:
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case MP_BINARY_OP_INPLACE_RSHIFT: {
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// TODO check conversion overflow
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machine_int_t irhs = mpz_as_int(zrhs);
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if (irhs < 0) {
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nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, "negative shift count"));
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}
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if (op == MP_BINARY_OP_LSHIFT || op == MP_BINARY_OP_INPLACE_LSHIFT) {
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mpz_shl_inpl(&res->mpz, zlhs, irhs);
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} else {
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mpz_shr_inpl(&res->mpz, zlhs, irhs);
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}
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break;
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}
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case MP_BINARY_OP_POWER:
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case MP_BINARY_OP_INPLACE_POWER:
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mpz_pow_inpl(&res->mpz, zlhs, zrhs);
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break;
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default:
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return MP_OBJ_NOT_SUPPORTED;
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}
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return res;
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} else {
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int cmp = mpz_cmp(zlhs, zrhs);
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switch (op) {
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case MP_BINARY_OP_LESS:
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return MP_BOOL(cmp < 0);
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case MP_BINARY_OP_MORE:
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return MP_BOOL(cmp > 0);
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case MP_BINARY_OP_LESS_EQUAL:
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return MP_BOOL(cmp <= 0);
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case MP_BINARY_OP_MORE_EQUAL:
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return MP_BOOL(cmp >= 0);
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case MP_BINARY_OP_EQUAL:
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return MP_BOOL(cmp == 0);
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default:
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return MP_OBJ_NOT_SUPPORTED;
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}
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}
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}
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mp_obj_t mp_obj_new_int(machine_int_t value) {
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if (MP_OBJ_FITS_SMALL_INT(value)) {
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return MP_OBJ_NEW_SMALL_INT(value);
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}
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return mp_obj_new_int_from_ll(value);
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}
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mp_obj_t mp_obj_new_int_from_ll(long long val) {
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mp_obj_int_t *o = mp_obj_int_new_mpz();
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mpz_set_from_ll(&o->mpz, val);
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return o;
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}
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mp_obj_t mp_obj_new_int_from_uint(machine_uint_t value) {
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// SMALL_INT accepts only signed numbers, of one bit less size
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// than word size, which totals 2 bits less for unsigned numbers.
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if ((value & (WORD_MSBIT_HIGH | (WORD_MSBIT_HIGH >> 1))) == 0) {
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return MP_OBJ_NEW_SMALL_INT(value);
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}
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return mp_obj_new_int_from_ll(value);
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}
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mp_obj_t mp_obj_new_int_from_long_str(const char *str) {
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mp_obj_int_t *o = mp_obj_int_new_mpz();
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uint len = strlen(str);
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int base = 0;
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int skip = mp_parse_num_base(str, len, &base);
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str += skip;
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len -= skip;
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uint n = mpz_set_from_str(&o->mpz, str, len, false, base);
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if (n != len) {
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nlr_raise(mp_obj_new_exception_msg(&mp_type_SyntaxError, "invalid syntax for number"));
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}
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return o;
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}
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machine_int_t mp_obj_int_get(mp_obj_t self_in) {
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if (MP_OBJ_IS_SMALL_INT(self_in)) {
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return MP_OBJ_SMALL_INT_VALUE(self_in);
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} else {
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mp_obj_int_t *self = self_in;
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return mpz_as_int(&self->mpz);
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}
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}
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machine_int_t mp_obj_int_get_checked(mp_obj_t self_in) {
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if (MP_OBJ_IS_SMALL_INT(self_in)) {
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return MP_OBJ_SMALL_INT_VALUE(self_in);
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} else {
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mp_obj_int_t *self = self_in;
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machine_int_t value;
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if (mpz_as_int_checked(&self->mpz, &value)) {
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return value;
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} else {
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// overflow
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nlr_raise(mp_obj_new_exception_msg(&mp_type_OverflowError, "overflow converting long int to machine word"));
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}
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}
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}
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#if MICROPY_ENABLE_FLOAT
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mp_float_t mp_obj_int_as_float(mp_obj_t self_in) {
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if (MP_OBJ_IS_SMALL_INT(self_in)) {
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return MP_OBJ_SMALL_INT_VALUE(self_in);
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} else {
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mp_obj_int_t *self = self_in;
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return mpz_as_float(&self->mpz);
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}
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}
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#endif
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#endif
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