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# Generated by re2py
# re2py $INPUT -o $OUTPUT
from collections import namedtuple
SemVer = namedtuple('SemVer', 'major minor patch')
NONE = -1
def parse(yyinput):
yycursor = 0
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:
yytl1 = yyt1
yytl2 = yyt2
yytr2 = yyt3
yytl3 = yyt5
yytr3 = yyt4
yytl0 = yyt1
yytr0 = yycursor
yytr1 = yyt2
yytr1 -= 1
major = int(yyinput[yytl1:yytr1])
minor = int(yyinput[yytl2:yytr2])
patch = 0 if yytl3 == NONE else int(yyinput[yytl3 + 1:yytr3])
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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