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Fredrik Lundh: here's the 96.6% version of SRE

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Jeremy Hylton 2000-06-01 17:39:12 +00:00
parent 0292d78e91
commit b1aa19515f
6 changed files with 745 additions and 305 deletions
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95
Lib/sre_constants.py
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@ -48,20 +48,31 @@ SUBPATTERN = "subpattern"
# positions
AT_BEGINNING = "at_beginning"
AT_BEGINNING_LINE = "at_beginning_line"
AT_BOUNDARY = "at_boundary"
AT_NON_BOUNDARY = "at_non_boundary"
AT_END = "at_end"
AT_END_LINE = "at_end_line"
# categories
CATEGORY_DIGIT = "category_digit"
CATEGORY_NOT_DIGIT = "category_not_digit"
CATEGORY_SPACE = "category_space"
CATEGORY_NOT_SPACE = "category_not_space"
CATEGORY_WORD = "category_word"
CATEGORY_NOT_WORD = "category_not_word"
CATEGORY_LINEBREAK = "category_linebreak"
CATEGORY_NOT_LINEBREAK = "category_not_linebreak"
CATEGORY_LOC_DIGIT = "category_loc_digit"
CATEGORY_LOC_NOT_DIGIT = "category_loc_not_digit"
CATEGORY_LOC_SPACE = "category_loc_space"
CATEGORY_LOC_NOT_SPACE = "category_loc_not_space"
CATEGORY_LOC_WORD = "category_loc_word"
CATEGORY_LOC_NOT_WORD = "category_loc_not_word"
CATEGORY_LOC_LINEBREAK = "category_loc_linebreak"
CATEGORY_LOC_NOT_LINEBREAK = "category_loc_not_linebreak"
CODES = [
OPCODES = [
# failure=0 success=1 (just because it looks better that way :-)
FAILURE, SUCCESS,
@ -87,45 +98,75 @@ CODES = [
]
# convert to dictionary
c = {}
i = 0
for code in CODES:
c[code] = i
i = i + 1
CODES = c
ATCODES = [
AT_BEGINNING, AT_BEGINNING_LINE, AT_BOUNDARY,
AT_NON_BOUNDARY, AT_END, AT_END_LINE
]
CHCODES = [
CATEGORY_DIGIT, CATEGORY_NOT_DIGIT, CATEGORY_SPACE,
CATEGORY_NOT_SPACE, CATEGORY_WORD, CATEGORY_NOT_WORD,
CATEGORY_LINEBREAK, CATEGORY_NOT_LINEBREAK, CATEGORY_LOC_DIGIT,
CATEGORY_LOC_NOT_DIGIT, CATEGORY_LOC_SPACE,
CATEGORY_LOC_NOT_SPACE, CATEGORY_LOC_WORD, CATEGORY_LOC_NOT_WORD,
CATEGORY_LOC_LINEBREAK, CATEGORY_LOC_NOT_LINEBREAK
]
def makedict(list):
d = {}
i = 0
for item in list:
d[item] = i
i = i + 1
return d
OPCODES = makedict(OPCODES)
ATCODES = makedict(ATCODES)
CHCODES = makedict(CHCODES)
# replacement operations for "ignore case" mode
MAP_IGNORE = {
OP_IGNORE = {
GROUP: GROUP_IGNORE,
IN: IN_IGNORE,
LITERAL: LITERAL_IGNORE,
NOT_LITERAL: NOT_LITERAL_IGNORE
}
POSITIONS = {
AT_BEGINNING: ord("a"),
AT_BOUNDARY: ord("b"),
AT_NON_BOUNDARY: ord("B"),
AT_END: ord("z"),
AT_MULTILINE = {
AT_BEGINNING: AT_BEGINNING_LINE,
AT_END: AT_END_LINE
}
CATEGORIES = {
CATEGORY_DIGIT: ord("d"),
CATEGORY_NOT_DIGIT: ord("D"),
CATEGORY_SPACE: ord("s"),
CATEGORY_NOT_SPACE: ord("S"),
CATEGORY_WORD: ord("w"),
CATEGORY_NOT_WORD: ord("W"),
CH_LOCALE = {
CATEGORY_DIGIT: CATEGORY_LOC_DIGIT,
CATEGORY_NOT_DIGIT: CATEGORY_LOC_NOT_DIGIT,
CATEGORY_SPACE: CATEGORY_LOC_SPACE,
CATEGORY_NOT_SPACE: CATEGORY_LOC_NOT_SPACE,
CATEGORY_WORD: CATEGORY_LOC_WORD,
CATEGORY_NOT_WORD: CATEGORY_LOC_NOT_WORD,
CATEGORY_LINEBREAK: CATEGORY_LOC_LINEBREAK,
CATEGORY_NOT_LINEBREAK: CATEGORY_LOC_NOT_LINEBREAK
}
# flags
SRE_FLAG_TEMPLATE = 1 # NYI
SRE_FLAG_IGNORECASE = 2
SRE_FLAG_LOCALE = 4
SRE_FLAG_MULTILINE = 8
SRE_FLAG_DOTALL = 16
SRE_FLAG_VERBOSE = 32
if __name__ == "__main__":
import string
items = CODES.items()
items.sort(lambda a, b: cmp(a[1], b[1]))
def dump(f, d, prefix):
items = d.items()
items.sort(lambda a, b: cmp(a[1], b[1]))
for k, v in items:
f.write("#define %s_%s %s\n" % (prefix, string.upper(k), v))
f = open("sre_constants.h", "w")
f.write("/* generated by sre_constants.py */\n")
for k, v in items:
f.write("#define SRE_OP_" + string.upper(k) + " " + str(v) + "\n")
f.write("/* generated from sre_constants.py */\n")
dump(f, OPCODES, "SRE_OP")
dump(f, ATCODES, "SRE")
dump(f, CHCODES, "SRE")
f.close()
print "done"