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/* Generated by re2c */
// re2rust $INPUT -o $OUTPUT
// Expect a string without terminating null.
fn lex(s: &[u8]) -> isize {
let (mut cur, mut mar) = (0, 0);
let lim = s.len();
let mut count = 0;
'lex: loop {
{
#[allow(unused_assignments)]
let mut yych : u8 = 0;
let mut yystate : usize = 0;
'yyl: loop {
match yystate {
0 => {
yych = unsafe {if cur < lim {*s.get_unchecked(cur)} else {0}};
match yych {
0x20 => {
cur += 1;
yystate = 3;
continue 'yyl;
}
0x27 => {
cur += 1;
yystate = 5;
continue 'yyl;
}
_ => {
if cur >= lim {
yystate = 10;
continue 'yyl;
}
cur += 1;
yystate = 1;
continue 'yyl;
}
}
}
1 => {
yystate = 2;
continue 'yyl;
}
2 => { return -1; }
3 => {
yych = unsafe {if cur < lim {*s.get_unchecked(cur)} else {0}};
match yych {
0x20 => {
cur += 1;
yystate = 3;
continue 'yyl;
}
_ => {
yystate = 4;
continue 'yyl;
}
}
}
4 => { continue 'lex; }
5 => {
mar = cur;
yych = unsafe {if cur < lim {*s.get_unchecked(cur)} else {0}};
if yych >= 0x01 {
yystate = 7;
continue 'yyl;
}
if cur >= lim {
yystate = 2;
continue 'yyl;
}
cur += 1;
yystate = 6;
continue 'yyl;
}
6 => {
yych = unsafe {if cur < lim {*s.get_unchecked(cur)} else {0}};
yystate = 7;
continue 'yyl;
}
7 => {
match yych {
0x27 => {
cur += 1;
yystate = 8;
continue 'yyl;
}
0x5C => {
cur += 1;
yystate = 9;
continue 'yyl;
}
_ => {
if cur >= lim {
yystate = 11;
continue 'yyl;
}
cur += 1;
yystate = 6;
continue 'yyl;
}
}
}
8 => { count += 1; continue 'lex; }
9 => {
yych = unsafe {if cur < lim {*s.get_unchecked(cur)} else {0}};
if yych <= 0x00 {
if cur >= lim {
yystate = 11;
continue 'yyl;
}
cur += 1;
yystate = 6;
continue 'yyl;
}
cur += 1;
yystate = 6;
continue 'yyl;
}
10 => { return count; }
11 => {
cur = mar;
yystate = 2;
continue 'yyl;
}
_ => {
panic!("internal lexer error")
}
}
}
}
}
}
fn main() {
assert_eq!(lex(b""), 0);
assert_eq!(lex(b"'qu\0tes' 'are' 'fine: \\'' "), 3);
assert_eq!(lex(b"'unterminated\\'"), -1);
}