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# Generated by re2py
# re2py $INPUT -o $OUTPUT
class State:
def __init__(self, str):
self.yyinput = str
self.yycursor = 0
self.yymarker = 0
# Common re2c definitions shared between all functions.
def parse_u32(str):
st = State(str)
yystate = 0
while True:
match yystate:
case 0:
yych = st.yyinput[st.yycursor]
st.yycursor += 1
if yych <= 0x2F:
yystate = 1
continue
if yych <= 0x30:
yystate = 2
continue
if yych <= 0x39:
yystate = 4
continue
yystate = 1
continue
case 1:
return None
case 2:
st.yymarker = st.yycursor
yych = st.yyinput[st.yycursor]
if yych <= 0x58:
if yych == 0x42:
st.yycursor += 1
yystate = 5
continue
if yych >= 0x58:
st.yycursor += 1
yystate = 7
continue
yystate = 3
continue
else:
if yych <= 0x62:
if yych >= 0x62:
st.yycursor += 1
yystate = 5
continue
yystate = 3
continue
else:
if yych == 0x78:
st.yycursor += 1
yystate = 7
continue
yystate = 3
continue
case 3:
return parse_oct(st)
case 4:
st.yycursor -= 1
return parse_dec(st)
case 5:
yych = st.yyinput[st.yycursor]
if yych <= 0x2F:
yystate = 6
continue
if yych <= 0x31:
st.yycursor += 1
yystate = 8
continue
yystate = 6
continue
case 6:
st.yycursor = st.yymarker
yystate = 3
continue
case 7:
yych = st.yyinput[st.yycursor]
if yych <= 0x40:
if yych <= 0x2F:
yystate = 6
continue
if yych <= 0x39:
st.yycursor += 1
yystate = 9
continue
yystate = 6
continue
else:
if yych <= 0x46:
st.yycursor += 1
yystate = 9
continue
if yych <= 0x60:
yystate = 6
continue
if yych <= 0x66:
st.yycursor += 1
yystate = 9
continue
yystate = 6
continue
case 8:
st.yycursor -= 1
return parse_bin(st)
case 9:
st.yycursor -= 1
return parse_hex(st)
case _:
raise "internal lexer error"
def parse_bin(st):
n = 0
while True:
yystate = 0
while True:
match yystate:
case 0:
yych = st.yyinput[st.yycursor]
st.yycursor += 1
if yych <= 0x2F:
yystate = 1
continue
if yych <= 0x31:
yystate = 2
continue
yystate = 1
continue
case 1:
return n
case 2:
n = n * 2 + (st.yyinput[st.yycursor - 1] - 48)
break
case _:
raise "internal lexer error"
def parse_oct(st):
n = 0
while True:
yystate = 0
while True:
match yystate:
case 0:
yych = st.yyinput[st.yycursor]
st.yycursor += 1
if yych <= 0x2F:
yystate = 1
continue
if yych <= 0x37:
yystate = 2
continue
yystate = 1
continue
case 1:
return n
case 2:
n = n * 8 + (st.yyinput[st.yycursor - 1] - 48)
break
case _:
raise "internal lexer error"
def parse_dec(st):
n = 0
while True:
yystate = 0
while True:
match yystate:
case 0:
yych = st.yyinput[st.yycursor]
st.yycursor += 1
if yych <= 0x2F:
yystate = 1
continue
if yych <= 0x39:
yystate = 2
continue
yystate = 1
continue
case 1:
return n
case 2:
n = n * 10 + (st.yyinput[st.yycursor - 1] - 48)
break
case _:
raise "internal lexer error"
def parse_hex(st):
n = 0
while True:
yystate = 0
while True:
match yystate:
case 0:
yych = st.yyinput[st.yycursor]
st.yycursor += 1
if yych <= 0x40:
if yych <= 0x2F:
yystate = 1
continue
if yych <= 0x39:
yystate = 2
continue
yystate = 1
continue
else:
if yych <= 0x46:
yystate = 3
continue
if yych <= 0x60:
yystate = 1
continue
if yych <= 0x66:
yystate = 4
continue
yystate = 1
continue
case 1:
return n
case 2:
n = n * 16 + (st.yyinput[st.yycursor - 1] - 48)
break
case 3:
n = n * 16 + (st.yyinput[st.yycursor - 1] - 55)
break
case 4:
n = n * 16 + (st.yyinput[st.yycursor - 1] - 87)
break
case _:
raise "internal lexer error"
assert parse_u32(b"\0") == None
assert parse_u32(b"1234567890\0") == 1234567890
assert parse_u32(b"0b1101\0") == 13
assert parse_u32(b"0x7Fe\0") == 2046
assert parse_u32(b"0644\0") == 420
assert parse_u32(b"9999999999\0") == 9999999999
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