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# re2py $INPUT -o $OUTPUT
# expect a null-terminated string
def lex(yyinput):
yycursor = 0
yylimit = len(yyinput) - 1 # terminating null not included
count = 0
while True: %{
re2c:yyfill:enable = 0;
re2c:eof = 0;
re2c:indent:top = 2;
str = ['] ([^'\\] | [\\][^])* ['];
* { return -1 }
$ { return count }
[ ]+ { break }
str {
count += 1
break
}
%}
def test(str, count):
# termunating null not included in `lim`
assert count == lex(str)
test(b"\0", 0);
test(b"'qu\0tes' 'are' 'fine: \\'' \0", 3);
test(b"'unterminated\\'\0", -1)
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