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Finished backporting PEP 3127, Integer Literal Support and Syntax.

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Added 0b and 0o literals to tokenizer.
Modified PyOS_strtoul to support 0b and 0o inputs.
Modified PyLong_FromString to support guessing 0b and 0o inputs.
Renamed test_hexoct.py to test_int_literal.py and added binary tests.
Added upper and lower case 0b, 0O, and 0X tests to test_int_literal.py
This commit is contained in:
Eric Smith 2008-03-17 17:32:20 +00:00
parent 7cfbf0c421
commit 9ff19b5434
7 changed files with 336 additions and 125 deletions
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15
Objects/longobject.c
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@ -1465,14 +1465,27 @@ PyLong_FromString(char *str, char **pend, int base)
while (*str != '\0' && isspace(Py_CHARMASK(*str)))
str++;
if (base == 0) {
/* No base given. Deduce the base from the contents
of the string */
if (str[0] != '0')
base = 10;
else if (str[1] == 'x' || str[1] == 'X')
base = 16;
else if (str[1] == 'o' || str[1] == 'O')
base = 8;
else if (str[1] == 'b' || str[1] == 'B')
base = 2;
else
/* "old" (C-style) octal literal, still valid in
2.x, although illegal in 3.x */
base = 8;
}
if (base == 16 && str[0] == '0' && (str[1] == 'x' || str[1] == 'X'))
/* Whether or not we were deducing the base, skip leading chars
as needed */
if (str[0] == '0' &&
((base == 16 && (str[1] == 'x' || str[1] == 'X')) ||
(base == 8 && (str[1] == 'o' || str[1] == 'O')) ||
(base == 2 && (str[1] == 'b' || str[1] == 'B'))))
str += 2;
start = str;