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|
# Generated by re2py
# re2py $INPUT -o $OUTPUT
from enum import Enum
class Num(Enum):
INT = 1
FLOAT = 2
NAN = 3
def lex(yyinput):
yycursor = 0
yyaccept = 0
yystate = 0
while True:
match yystate:
case 0:
yych = yyinput[yycursor]
yycursor += 1
if yych <= 0x2F:
if yych == 0x2E:
yystate = 2
continue
else:
if yych <= 0x30:
yystate = 3
continue
if yych <= 0x39:
yystate = 4
continue
yystate = 1
continue
case 1:
return Num.NAN
case 2:
yych = yyinput[yycursor]
if yych <= 0x2F:
yystate = 1
continue
if yych <= 0x39:
yycursor += 1
yystate = 6
continue
yystate = 1
continue
case 3:
yyaccept = 0
yymarker = yycursor
yych = yyinput[yycursor]
if yych <= 0x39:
if yych == 0x2E:
yycursor += 1
yystate = 6
continue
if yych <= 0x2F:
yystate = 1
continue
yycursor += 1
yystate = 8
continue
else:
if yych <= 0x45:
if yych <= 0x44:
yystate = 1
continue
yycursor += 1
yystate = 10
continue
else:
if yych == 0x65:
yycursor += 1
yystate = 10
continue
yystate = 1
continue
case 4:
yyaccept = 1
yymarker = yycursor
yych = yyinput[yycursor]
if yych <= 0x39:
if yych == 0x2E:
yycursor += 1
yystate = 6
continue
if yych >= 0x30:
yycursor += 1
yystate = 4
continue
yystate = 5
continue
else:
if yych <= 0x45:
if yych >= 0x45:
yycursor += 1
yystate = 10
continue
yystate = 5
continue
else:
if yych == 0x65:
yycursor += 1
yystate = 10
continue
yystate = 5
continue
case 5:
return Num.INT
case 6:
yyaccept = 2
yymarker = yycursor
yych = yyinput[yycursor]
if yych <= 0x44:
if yych <= 0x2F:
yystate = 7
continue
if yych <= 0x39:
yycursor += 1
yystate = 6
continue
yystate = 7
continue
else:
if yych <= 0x45:
yycursor += 1
yystate = 10
continue
if yych == 0x65:
yycursor += 1
yystate = 10
continue
yystate = 7
continue
case 7:
return Num.FLOAT
case 8:
yych = yyinput[yycursor]
if yych <= 0x39:
if yych == 0x2E:
yycursor += 1
yystate = 6
continue
if yych >= 0x30:
yycursor += 1
yystate = 8
continue
yystate = 9
continue
else:
if yych <= 0x45:
if yych >= 0x45:
yycursor += 1
yystate = 10
continue
yystate = 9
continue
else:
if yych == 0x65:
yycursor += 1
yystate = 10
continue
yystate = 9
continue
case 9:
yycursor = yymarker
if yyaccept <= 1:
if yyaccept == 0:
yystate = 1
continue
else:
yystate = 5
continue
else:
yystate = 7
continue
case 10:
yych = yyinput[yycursor]
if yych <= 0x2C:
if yych != 0x2B:
yystate = 9
continue
yycursor += 1
yystate = 11
continue
else:
if yych <= 0x2D:
yycursor += 1
yystate = 11
continue
if yych <= 0x2F:
yystate = 9
continue
if yych <= 0x39:
yycursor += 1
yystate = 12
continue
yystate = 9
continue
case 11:
yych = yyinput[yycursor]
if yych <= 0x2F:
yystate = 9
continue
if yych >= 0x3A:
yystate = 9
continue
yycursor += 1
yystate = 12
continue
case 12:
yych = yyinput[yycursor]
if yych <= 0x2F:
yystate = 7
continue
if yych <= 0x39:
yycursor += 1
yystate = 12
continue
yystate = 7
continue
case _:
raise "internal lexer error"
assert lex(b"123\0") == Num.INT
assert lex(b"123.4567\0") == Num.FLOAT
|
