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Complete the previous effort to factor out constant expressions

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and improve the speed of the if/elif/else blocks.
This commit is contained in:
Raymond Hettinger 2005-02-28 19:27:52 +00:00
parent 9533e34024
commit 049ade2997
2 changed files with 34 additions and 12 deletions
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27
Lib/sre_parse.py
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@ -16,15 +16,21 @@ import sys
from sre_constants import *
def set(seq):
s = {}
for elem in seq:
s[elem] = 1
return s
SPECIAL_CHARS = ".\\[{()*+?^$|"
REPEAT_CHARS = "*+?{"
DIGITS = tuple("0123456789")
DIGITS = set("0123456789")
OCTDIGITS = tuple("01234567")
HEXDIGITS = tuple("0123456789abcdefABCDEF")
OCTDIGITS = set("01234567")
HEXDIGITS = set("0123456789abcdefABCDEF")
WHITESPACE = tuple(" \t\n\r\v\f")
WHITESPACE = set(" \t\n\r\v\f")
ESCAPES = {
r"\a": (LITERAL, ord("\a")),
@ -371,6 +377,11 @@ def _parse_sub_cond(source, state, condgroup):
subpattern.append((GROUPREF_EXISTS, (condgroup, item_yes, item_no)))
return subpattern
_PATTERNENDERS = set("|)")
_ASSERTCHARS = set("=!<")
_LOOKBEHINDASSERTCHARS = set("=!")
_REPEATCODES = set([MIN_REPEAT, MAX_REPEAT])
def _parse(source, state):
# parse a simple pattern
subpattern = SubPattern(state)
@ -380,10 +391,10 @@ def _parse(source, state):
sourceget = source.get
sourcematch = source.match
_len = len
PATTERNENDERS = ("|", ")")
ASSERTCHARS = ("=", "!", "<")
LOOKBEHINDASSERTCHARS = ("=", "!")
REPEATCODES = (MIN_REPEAT, MAX_REPEAT)
PATTERNENDERS = _PATTERNENDERS
ASSERTCHARS = _ASSERTCHARS
LOOKBEHINDASSERTCHARS = _LOOKBEHINDASSERTCHARS
REPEATCODES = _REPEATCODES
while 1: