148 lines
3.6 KiB
C
148 lines
3.6 KiB
C
#include <stdlib.h>
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#include "misc.h"
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#include "mpconfig.h"
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#include "qstr.h"
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#include "nlr.h"
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#include "obj.h"
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#include "parsenumbase.h"
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#include "parsenum.h"
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#if defined(UNIX)
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#include <ctype.h>
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#include <errno.h>
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mp_obj_t mp_parse_num_integer(const char *restrict str, uint len, int base) {
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// TODO at the moment we ignore len; we should honour it!
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// TODO detect integer overflow and return bignum
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int c, neg = 0;
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const char *p = str;
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char *num;
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long found;
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// check radix base
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if ((base != 0 && base < 2) || base > 36) {
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nlr_jump(mp_obj_new_exception_msg(&mp_type_ValueError, "ValueError: int() arg 2 must be >=2 and <= 36"));
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}
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// skip surrounded whitespace
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while (isspace((c = *(p++))));
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if (c == 0) {
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goto value_error;
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}
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// preced sign
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if (c == '+' || c == '-') {
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neg = - (c == '-');
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} else {
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p--;
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}
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len -= p - str;
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int skip = mp_parse_num_base(p, len, &base);
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p += skip;
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len -= skip;
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errno = 0;
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found = strtol(p, &num, base);
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if (errno) {
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goto value_error;
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} else if (found && *(num) == 0) {
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goto done;
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} else if (found || num != p) {
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goto check_tail_space;
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} else {
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goto value_error;
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}
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check_tail_space:
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if (*(num) != 0) {
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while (isspace((c = *(num++))));
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if (c != 0) {
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goto value_error;
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}
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}
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done:
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return MP_OBJ_NEW_SMALL_INT((found ^ neg) - neg);
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value_error:
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nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_ValueError, "invalid literal for int() with base %d: '%s'", base, str));
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}
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#else /* defined(UNIX) */
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mp_obj_t mp_parse_num_integer(const char *restrict str, uint len, int base) {
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// TODO port strtol to stm
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return MP_OBJ_NEW_SMALL_INT(0);
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}
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#endif /* defined(UNIX) */
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#define PARSE_DEC_IN_INTG (1)
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#define PARSE_DEC_IN_FRAC (2)
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#define PARSE_DEC_IN_EXP (3)
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mp_obj_t mp_parse_num_decimal(const char *str, uint len) {
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#if MICROPY_ENABLE_FLOAT
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int in = PARSE_DEC_IN_INTG;
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mp_float_t dec_val = 0;
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bool exp_neg = false;
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int exp_val = 0;
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int exp_extra = 0;
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bool imag = false;
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const char *top = str + len;
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for (; str < top; str++) {
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int dig = *str;
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if ('0' <= dig && dig <= '9') {
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dig -= '0';
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if (in == PARSE_DEC_IN_EXP) {
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exp_val = 10 * exp_val + dig;
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} else {
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dec_val = 10 * dec_val + dig;
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if (in == PARSE_DEC_IN_FRAC) {
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exp_extra -= 1;
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}
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}
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} else if (in == PARSE_DEC_IN_INTG && dig == '.') {
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in = PARSE_DEC_IN_FRAC;
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} else if (in != PARSE_DEC_IN_EXP && (dig == 'E' || dig == 'e')) {
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in = PARSE_DEC_IN_EXP;
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if (str[1] == '+') {
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str++;
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} else if (str[1] == '-') {
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str++;
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exp_neg = true;
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}
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} else if (dig == 'J' || dig == 'j') {
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str++;
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imag = true;
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break;
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} else {
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// unknown character
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break;
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}
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}
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if (*str != 0) {
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nlr_jump(mp_obj_new_exception_msg(&mp_type_SyntaxError, "invalid syntax for number"));
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}
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if (exp_neg) {
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exp_val = -exp_val;
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}
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exp_val += exp_extra;
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for (; exp_val > 0; exp_val--) {
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dec_val *= 10;
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}
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for (; exp_val < 0; exp_val++) {
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dec_val *= 0.1;
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}
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if (imag) {
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return mp_obj_new_complex(0, dec_val);
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} else {
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return mp_obj_new_float(dec_val);
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}
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#else
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nlr_jump(mp_obj_new_exception_msg(&mp_type_SyntaxError, "decimal numbers not supported"));
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#endif
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}
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