Function host_edge_encode

compiler/src/main/abi_bridge.rs:243–259

(tag: u32, ptr: *const u8, len: u32)

// Bootstrap encoder: classifies (tag, bytes) into a Val handle; returns 0 on Invalid.
#[unsafe(no_mangle)]
pub unsafe extern "C" fn host_edge_encode(tag: u32, ptr: *const u8, len: u32) -> u32 {
    // Alloc in the live VM; 0 when outside run() or OOM.
    fn alloc_and_put(obj: HeapObj) -> u32 {
        match with_vm(|vm| vm.heap.alloc(obj).ok()).flatten() {
            Some(val) => put_val(val),
            None => 0,
        }
    }
    let bytes = unsafe { safe_bytes(ptr, len) };
    match classify_encode(tag, bytes) {
        EncodeRequest::Direct(bits) => put_val(Val(bits)),
        EncodeRequest::AllocStr(s) => alloc_and_put(HeapObj::Str(s.to_string())),
        EncodeRequest::AllocBytes(b) => alloc_and_put(HeapObj::Bytes(b.to_vec())),
        EncodeRequest::AllocLongInt(i) => alloc_and_put(HeapObj::LongInt(i)),
        EncodeRequest::Invalid => 0,
    }
}

// Bootstrap decoder: writes tag to `*out_tag`, bytes to `dst[..dst_max]`.
#[unsafe(no_mangle)]