luaur-vm 0.1.1

The Luau register virtual machine and standard library (Rust).
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21

use crate::functions::check_capture::check_capture;
use crate::records::match_state::MatchState;
use core::ffi::{c_char, c_int};

pub(crate) unsafe fn match_capture(
    ms: *mut MatchState,
    s: *const c_char,
    l: c_int,
) -> *const c_char {
    let l = check_capture(ms, l);
    let len = (*ms).capture[l as usize].len as usize;

    if ((*ms).src_end as usize).wrapping_sub(s as usize) >= len
        && core::slice::from_raw_parts((*ms).capture[l as usize].init as *const u8, len)
            == core::slice::from_raw_parts(s as *const u8, len)
    {
        s.add(len)
    } else {
        core::ptr::null()
    }
}