abi_stable/type_layout/
tl_reflection.rs

Help
1use crate::std_types::RStr;
2
3////////////////////////////////////////////////////////////////////////////////
4
5/// Whether a field is accessible,and how it is accessed.
6#[repr(u8)]
7#[derive(Debug, Copy, Clone, PartialEq, Eq, StableAbi)]
8#[sabi(unsafe_sabi_opaque_fields)]
9pub enum FieldAccessor {
10    /// Accessible with `self.field_name`
11    Direct,
12    /// Accessible with `fn field_name(&self)->FieldType`
13    Method,
14    /// Accessible with `fn name(&self)->FieldType`
15    MethodNamed {
16        ///
17        name: RStr<'static>,
18    },
19    /// Accessible with `fn field_name(&self)->Option<FieldType>`
20    MethodOption,
21    /// This field is completely inaccessible.
22    Opaque,
23}
24
25impl FieldAccessor {
26    /// Constructs a FieldAccessor for a method named `name`.
27    pub const fn method_named(name: RStr<'static>) -> Self {
28        FieldAccessor::MethodNamed { name }
29    }
30}
31
32////////////////////////////////////////////////////////////////////////////////
33
34abi_stable_shared::declare_comp_field_accessor! {
35    attrs=[
36        derive(StableAbi),
37        sabi(unsafe_sabi_opaque_fields),
38    ]
39}
40
41impl CompFieldAccessor {
42    /// Expands this `CompFieldAccessor` into a `FieldAccessor`,
43    /// using the string slice contained in the `SharedVars` of
44    /// the `TypeLayout` this is stored inside of.
45    pub const fn expand(self, string: &'static str) -> Option<FieldAccessor> {
46        Some(match self {
47            Self::DIRECT => FieldAccessor::Direct,
48            Self::METHOD => FieldAccessor::Method,
49            Self::METHOD_NAMED => FieldAccessor::MethodNamed {
50                name: RStr::from_str(string),
51            },
52            Self::METHOD_OPTION => FieldAccessor::MethodOption,
53            Self::OPAQUE => FieldAccessor::Opaque,
54            _ => return None,
55        })
56    }
57}
58
59////////////////////////////////////////////////////////////////////////////////
abi_stable/type_layout/tl_reflection.rs

abi_stable/type_layout/
tl_reflection.rs
