wasmtime_c_api/types/
val.rs

1use wasmtime::{HeapType, ValType};
2
3#[repr(C)]
4#[derive(Clone)]
5pub struct wasm_valtype_t {
6    pub(crate) ty: ValType,
7}
8
9wasmtime_c_api_macros::declare_ty!(wasm_valtype_t);
10
11pub type wasm_valkind_t = u8;
12pub const WASM_I32: wasm_valkind_t = 0;
13pub const WASM_I64: wasm_valkind_t = 1;
14pub const WASM_F32: wasm_valkind_t = 2;
15pub const WASM_F64: wasm_valkind_t = 3;
16pub const WASM_EXTERNREF: wasm_valkind_t = 128;
17pub const WASM_FUNCREF: wasm_valkind_t = 129;
18
19#[unsafe(no_mangle)]
20pub extern "C" fn wasm_valtype_new(kind: wasm_valkind_t) -> Box<wasm_valtype_t> {
21    Box::new(wasm_valtype_t {
22        ty: into_valtype(kind),
23    })
24}
25
26#[unsafe(no_mangle)]
27pub extern "C" fn wasm_valtype_kind(vt: &wasm_valtype_t) -> wasm_valkind_t {
28    from_valtype(&vt.ty)
29}
30
31pub(crate) fn into_valtype(kind: wasm_valkind_t) -> ValType {
32    match kind {
33        WASM_I32 => ValType::I32,
34        WASM_I64 => ValType::I64,
35        WASM_F32 => ValType::F32,
36        WASM_F64 => ValType::F64,
37        WASM_EXTERNREF => ValType::EXTERNREF,
38        WASM_FUNCREF => ValType::FUNCREF,
39        WASMTIME_V128 => ValType::V128,
40        _ => panic!("unexpected kind: {kind}"),
41    }
42}
43
44pub(crate) fn from_valtype(ty: &ValType) -> wasm_valkind_t {
45    match ty {
46        ValType::I32 => WASM_I32,
47        ValType::I64 => WASM_I64,
48        ValType::F32 => WASM_F32,
49        ValType::F64 => WASM_F64,
50        ValType::V128 => WASMTIME_V128,
51        ValType::Ref(r) => match (r.is_nullable(), r.heap_type()) {
52            (true, HeapType::Extern) => WASM_EXTERNREF,
53            (true, HeapType::Func) => WASM_FUNCREF,
54            _ => crate::abort("support for non-externref and non-funcref references"),
55        },
56    }
57}
58
59pub type wasmtime_valkind_t = u8;
60pub const WASMTIME_I32: wasmtime_valkind_t = 0;
61pub const WASMTIME_I64: wasmtime_valkind_t = 1;
62pub const WASMTIME_F32: wasmtime_valkind_t = 2;
63pub const WASMTIME_F64: wasmtime_valkind_t = 3;
64pub const WASMTIME_V128: wasmtime_valkind_t = 4;
65pub const WASMTIME_FUNCREF: wasmtime_valkind_t = 5;
66pub const WASMTIME_EXTERNREF: wasmtime_valkind_t = 6;
67pub const WASMTIME_ANYREF: wasmtime_valkind_t = 7;
wasmtime_c_api/types/val.rs

wasmtime_c_api/types/
val.rs
