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# Generated by re2py
# re2py $INPUT -o $OUTPUT
from collections import namedtuple
SemVer = namedtuple('SemVer', 'major minor patch')
# Maximum number of capturing groups among all rules.
YYMAXNMATCH = 4
NONE = -1
def parse(yyinput):
yycursor = 0
# A list for capturing parentheses (twice the number of groups).
yypmatch = [None] * (YYMAXNMATCH * 2)
yystate = 0
while True:
match yystate:
case 0:
yych = yyinput[yycursor]
if yych <= 0x2F:
yycursor += 1
yystate = 1
continue
if yych <= 0x39:
yyt1 = yycursor
yycursor += 1
yystate = 3
continue
yycursor += 1
yystate = 1
continue
case 1:
yystate = 2
continue
case 2:
return None
case 3:
yymarker = yycursor
yych = yyinput[yycursor]
if yych == 0x2E:
yycursor += 1
yystate = 4
continue
if yych <= 0x2F:
yystate = 2
continue
if yych <= 0x39:
yycursor += 1
yystate = 6
continue
yystate = 2
continue
case 4:
yych = yyinput[yycursor]
if yych <= 0x2F:
yystate = 5
continue
if yych <= 0x39:
yyt2 = yycursor
yycursor += 1
yystate = 7
continue
yystate = 5
continue
case 5:
yycursor = yymarker
yystate = 2
continue
case 6:
yych = yyinput[yycursor]
if yych == 0x2E:
yycursor += 1
yystate = 4
continue
if yych <= 0x2F:
yystate = 5
continue
if yych <= 0x39:
yycursor += 1
yystate = 6
continue
yystate = 5
continue
case 7:
yych = yyinput[yycursor]
if yych <= 0x2E:
if yych <= 0x00:
yyt3 = yycursor
yyt4 = -1
yyt5 = -1
yycursor += 1
yystate = 8
continue
if yych <= 0x2D:
yystate = 5
continue
yyt3 = yycursor
yyt5 = yycursor
yycursor += 1
yystate = 9
continue
else:
if yych <= 0x2F:
yystate = 5
continue
if yych <= 0x39:
yycursor += 1
yystate = 7
continue
yystate = 5
continue
case 8:
yynmatch = 4
yypmatch[2] = yyt1
yypmatch[4] = yyt2
yypmatch[5] = yyt3
yypmatch[6] = yyt5
yypmatch[7] = yyt4
yypmatch[0] = yyt1
yypmatch[1] = yycursor
yypmatch[3] = yyt2
yypmatch[3] -= 1
# `yynmatch` is the number of capturing groups
assert yynmatch == 4
# Even `yypmatch` values are for opening parentheses, odd values
# are for closing parentheses, the first group is the whole match.
major = int(yyinput[yypmatch[2]:yypmatch[3]])
minor = int(yyinput[yypmatch[4]:yypmatch[5]])
patch = 0 if yypmatch[6] == NONE else int(yyinput[yypmatch[6] + 1:yypmatch[7]])
return SemVer(major, minor, patch)
case 9:
yych = yyinput[yycursor]
if yych <= 0x00:
yystate = 5
continue
yystate = 11
continue
case 10:
yych = yyinput[yycursor]
yystate = 11
continue
case 11:
if yych <= 0x00:
yyt4 = yycursor
yycursor += 1
yystate = 8
continue
if yych <= 0x2F:
yystate = 5
continue
if yych <= 0x39:
yycursor += 1
yystate = 10
continue
yystate = 5
continue
case _:
raise "internal lexer error"
assert parse(b"23.34\0") == SemVer(23, 34, 0)
assert parse(b"1.2.99999\0") == SemVer(1, 2, 99999)
assert parse(b"1.a\0") == None
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