language-servers/roc
1
0
Fork 0
mirror of https://github.com/roc-lang/roc.git synced 2025-10-02 16:21:11 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 6

nullable wrapped tags

Browse source
This commit is contained in:
Folkert 2022-08-06 14:40:00 +02:00
parent 98e1ee1bf7
commit 546b702740
No known key found for this signature in database
GPG key ID: 1F17F6FFD112B97C
8 changed files with 361 additions and 10 deletions
Download patch file Download diff file Expand all files Collapse all files

9
crates/repl_wasm/src/repl.rs
View file

@ -82,6 +82,15 @@ impl<'a> ReplAppMemory for WasmMemory<'a> {
unsafe { std::str::from_utf8_unchecked(str_bytes) }
}
fn deref_pointer_with_tag_id(&self, addr: usize) -> (u16, u64) {
let addr_with_id = self.deref_usize(addr);
let tag_id_mask = 0b11;
let tag_id = addr_with_id & tag_id_mask;
let data_addr = addr_with_id & !tag_id_mask;
(tag_id as _, data_addr as _)
}
}
impl<'a> WasmReplApp<'a> {