| // Name mangling can cope with char-like byte literals. |
| |
| #[repr(C)] |
| pub struct Parser<const OPEN: u8, const CLOSE: u8> { |
| pub buf: *mut u8, |
| pub len: usize, |
| } |
| |
| #[no_mangle] |
| pub unsafe extern "C" fn init_parens_parser(p: *mut Parser<b'(', b')'>, buf: *mut u8, len: usize) { |
| unsafe { |
| *p = Parser { buf, len }; |
| } |
| } |
| |
| // The same type as above, because `b'(' == 40 && b')' == 41`. And it happens |
| // to mangle to the same C identifier. It doesn't always work out that way! |
| #[no_mangle] |
| pub unsafe extern "C" fn destroy_parens_parser(p: *mut Parser<40, 41>) { |
| // nothing to do |
| } |
| |
| |
| #[no_mangle] |
| pub unsafe extern "C" fn init_braces_parser(p: *mut Parser<b'{', b'}'>, buf: *mut u8, len: usize) { |
| unsafe { |
| *p = Parser { buf, len }; |
| } |
| } |