# 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