abi_stable_derive/stable_abi/
tl_multi_tl.rs

1use super::*;
2
3use crate::fn_pointer_extractor::FnParamRet;
4
5abi_stable_shared::declare_type_layout_index! {
6    attrs=[]
7}
8
9impl TypeLayoutIndex {
10    /// Used to recover from syn errors,
11    /// this value shouldn't be used in the layout constant since it's reserved
12    /// for errors.
13    pub const DUMMY: Self = Self::from_u10(!0);
14}
15
16abi_stable_shared::declare_multi_tl_types! {
17    attrs=[]
18}
19
20impl TypeLayoutRange {
21    pub(crate) fn compress_params<'a>(
22        params: &[FnParamRet<'a>],
23        shared_vars: &mut SharedVars<'a>,
24    ) -> Self {
25        let param_len = params.len();
26        if param_len <= TypeLayoutRange::STORED_INLINE {
27            let mut arr = [0u16; TypeLayoutRange::STORED_INLINE];
28
29            for (p_i, param) in params.iter().enumerate() {
30                let ty: &'a syn::Type = param.ty;
31                arr[p_i] = shared_vars
32                    .push_type(LayoutConstructor::Regular, ty)
33                    .to_u10();
34            }
35
36            Self::with_up_to_5(param_len, arr)
37        } else {
38            const I_BEFORE: usize = TypeLayoutRange::STORED_INLINE - 1;
39            let mut arr = [0u16; TypeLayoutRange::STORED_INLINE];
40
41            let mut iter = params.iter().map(|p| -> &'a syn::Type { p.ty });
42            for (p_i, ty) in iter.by_ref().take(I_BEFORE).enumerate() {
43                arr[p_i] = shared_vars
44                    .push_type(LayoutConstructor::Regular, ty)
45                    .to_u10();
46            }
47
48            arr[I_BEFORE] = shared_vars
49                .extend_type(LayoutConstructor::Regular, iter)
50                .start;
51
52            Self::with_more_than_5(param_len, arr)
53        }
54    }
55}
abi_stable_derive/stable_abi/tl_multi_tl.rs

abi_stable_derive/stable_abi/
tl_multi_tl.rs
