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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); }