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# re2py $INPUT -o $OUTPUT
from time import time
/*!rules:re2c:x
re2c:api = custom;
re2c:define:YYPEEK = "str[cur]";
re2c:define:YYSKIP = "cur += 1";
re2c:define:YYBACKUP = "mar = cur";
re2c:define:YYRESTORE = "cur = mar";
re2c:yyfill:enable = 0;
re2c:indent:top = 1;
id = [a-zA-Z_][a-zA-Z0-9_]*;
id { return True }
* { return False }
*/
def lex_switch_cases(str):
cur = 0
/*!use:re2c:x
re2c:nested-ifs = 0;
*/
def lex_nested_ifs(str):
cur = 0
/*!use:re2c:x*/
STR = b"01234567890123456789012345678901234567890123456789012345678901234567890123456789\0"
TIMES = 1000000
start = time()
for i in range(TIMES):
lex_nested_ifs(STR)
end = time()
print("nested ifs took {}".format(end - start))
start = time()
for i in range(TIMES):
lex_switch_cases(STR)
end = time()
print("switch cases took {}".format(end - start))
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