| Server IP : 85.214.239.14 / Your IP : 3.143.7.53 Web Server : Apache/2.4.62 (Debian) System : Linux h2886529.stratoserver.net 4.9.0 #1 SMP Tue Jan 9 19:45:01 MSK 2024 x86_64 User : www-data ( 33) PHP Version : 7.4.18 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, MySQL : OFF | cURL : OFF | WGET : ON | Perl : ON | Python : ON | Sudo : ON | Pkexec : OFF Directory : /proc/self/root/usr/share/doc/re2c/examples/rust/reuse/ |
Upload File : |
/* Generated by re2c */
// re2rust $INPUT -o $OUTPUT --input-encoding utf8
// This example supports multiple input encodings: UTF-8 and UTF-32.
// Both lexers are generated from the same rules block, and the use
// blocks add only encoding-specific configurations.
fn lex_utf8(str: &[u8]) -> Option<usize> {
let (mut cur, mut mar) = (0, 0);
{
#[allow(unused_assignments)]
let mut yych : u8 = 0;
let mut yystate : usize = 0;
'yyl: loop {
match yystate {
0 => {
yych = unsafe {*str.get_unchecked(cur)};
cur += 1;
match yych {
0xE2 => {
yystate = 3;
continue 'yyl;
}
_ => {
yystate = 1;
continue 'yyl;
}
}
}
1 => {
yystate = 2;
continue 'yyl;
}
2 => { return None; }
3 => {
mar = cur;
yych = unsafe {*str.get_unchecked(cur)};
match yych {
0x88 => {
cur += 1;
yystate = 4;
continue 'yyl;
}
_ => {
yystate = 2;
continue 'yyl;
}
}
}
4 => {
yych = unsafe {*str.get_unchecked(cur)};
match yych {
0x80 => {
cur += 1;
yystate = 6;
continue 'yyl;
}
_ => {
yystate = 5;
continue 'yyl;
}
}
}
5 => {
cur = mar;
yystate = 2;
continue 'yyl;
}
6 => {
yych = unsafe {*str.get_unchecked(cur)};
match yych {
0x78 => {
cur += 1;
yystate = 7;
continue 'yyl;
}
_ => {
yystate = 5;
continue 'yyl;
}
}
}
7 => {
yych = unsafe {*str.get_unchecked(cur)};
match yych {
0x20 => {
cur += 1;
yystate = 8;
continue 'yyl;
}
_ => {
yystate = 5;
continue 'yyl;
}
}
}
8 => {
yych = unsafe {*str.get_unchecked(cur)};
match yych {
0xE2 => {
cur += 1;
yystate = 9;
continue 'yyl;
}
_ => {
yystate = 5;
continue 'yyl;
}
}
}
9 => {
yych = unsafe {*str.get_unchecked(cur)};
match yych {
0x88 => {
cur += 1;
yystate = 10;
continue 'yyl;
}
_ => {
yystate = 5;
continue 'yyl;
}
}
}
10 => {
yych = unsafe {*str.get_unchecked(cur)};
match yych {
0x83 => {
cur += 1;
yystate = 11;
continue 'yyl;
}
_ => {
yystate = 5;
continue 'yyl;
}
}
}
11 => {
yych = unsafe {*str.get_unchecked(cur)};
match yych {
0x79 => {
cur += 1;
yystate = 12;
continue 'yyl;
}
_ => {
yystate = 5;
continue 'yyl;
}
}
}
12 => { return Some(cur); }
_ => {
panic!("internal lexer error")
}
}
}
}
}
fn lex_utf32(str: &[u32]) -> Option<usize> {
let (mut cur, mut mar) = (0, 0);
{
#[allow(unused_assignments)]
let mut yych : u32 = 0;
let mut yystate : usize = 0;
'yyl: loop {
match yystate {
0 => {
yych = unsafe {*str.get_unchecked(cur)};
cur += 1;
if yych == 0x00002200 {
yystate = 2;
continue 'yyl;
}
yystate = 1;
continue 'yyl;
}
1 => { return None; }
2 => {
mar = cur;
yych = unsafe {*str.get_unchecked(cur)};
if yych != 0x00000078 {
yystate = 1;
continue 'yyl;
}
cur += 1;
yych = unsafe {*str.get_unchecked(cur)};
if yych == 0x00000020 {
cur += 1;
yystate = 4;
continue 'yyl;
}
yystate = 3;
continue 'yyl;
}
3 => {
cur = mar;
yystate = 1;
continue 'yyl;
}
4 => {
yych = unsafe {*str.get_unchecked(cur)};
if yych != 0x00002203 {
yystate = 3;
continue 'yyl;
}
cur += 1;
yych = unsafe {*str.get_unchecked(cur)};
if yych != 0x00000079 {
yystate = 3;
continue 'yyl;
}
cur += 1;
{ return Some(cur); }
}
_ => {
panic!("internal lexer error")
}
}
}
}
}
fn main() {
let s8 = vec![0xe2, 0x88, 0x80, 0x78, 0x20, 0xe2, 0x88, 0x83, 0x79];
assert_eq!(lex_utf8(&s8), Some(s8.len()));
let s32 = vec![0x2200, 0x78, 0x20, 0x2203, 0x79];
assert_eq!(lex_utf32(&s32), Some(s32.len()));
}