// re2rust $INPUT -o $OUTPUT
use std::fs::File;
use std::io::{Read, Write};
const BUFSIZE: usize = 4096;
const NONE: usize = usize::MAX;
struct State {
file: File,
yyinput: [u8; BUFSIZE],
yylimit: usize,
yycursor: usize,
yymarker: usize,
token: usize,
// Intermediate tag variables must be part of the lexer state passed to YYFILL.
// They don't correspond to tags and should be autogenerated by re2c.
/*!stags:re2c format = "@@: usize,\n"; */
eof: bool,
}
#[derive(PartialEq)]
enum Fill { Ok, Eof, LongLexeme }
#[derive(Debug, PartialEq)]
struct SemVer(u32, u32, u32); // version: (major, minor, patch)
fn s2n(str: &[u8]) -> u32 { // convert a pre-parsed string to a number
let mut n = 0;
for i in str { n = n * 10 + *i as u32 - 48; }
return n;
}
macro_rules! shift { // ignore overflow, marker and tags may not be set yet
($x:expr, $y:expr) => { $x = $x.overflowing_sub($y).0 }
}
re2c version: 4.1~8baaca577
Select example "rust/submatch/01_stags_fill.re"