1use crate::{
2 WasmtimeStoreContext, WasmtimeStoreContextMut, handle_result, wasm_extern_t, wasm_tabletype_t,
3 wasmtime_error_t, wasmtime_val_t,
4};
5#[cfg(feature = "gc")]
6use crate::{wasm_ref_t, wasm_store_t};
7use std::mem::MaybeUninit;
8use wasmtime::{Extern, Table, format_err};
9#[cfg(feature = "gc")]
10use wasmtime::{Ref, RootScope, TableType};
11
12#[derive(Clone)]
13#[repr(transparent)]
14pub struct wasm_table_t {
15 ext: wasm_extern_t,
16}
17
18wasmtime_c_api_macros::declare_ref!(wasm_table_t);
19
20pub type wasm_table_size_t = u32;
21
22impl wasm_table_t {
23 pub(crate) fn try_from(e: &wasm_extern_t) -> Option<&wasm_table_t> {
24 match &e.which {
25 Extern::Table(_) => Some(unsafe { &*(e as *const _ as *const _) }),
26 _ => None,
27 }
28 }
29
30 fn table(&self) -> Table {
31 match self.ext.which {
32 Extern::Table(t) => t,
33 _ => unsafe { std::hint::unreachable_unchecked() },
34 }
35 }
36}
37
38#[cfg(feature = "gc")]
39fn option_wasm_ref_t_to_ref(r: Option<&wasm_ref_t>, table_ty: &TableType) -> Ref {
40 r.map(|r| r.r.clone())
41 .unwrap_or_else(|| Ref::null(table_ty.element().heap_type()))
42}
43
44#[unsafe(no_mangle)]
45#[cfg(feature = "gc")]
46pub unsafe extern "C" fn wasm_table_new(
47 store: &mut wasm_store_t,
48 tt: &wasm_tabletype_t,
49 init: Option<&wasm_ref_t>,
50) -> Option<Box<wasm_table_t>> {
51 let tt = tt.ty().ty.clone();
52 let init = option_wasm_ref_t_to_ref(init, &tt);
53 let table = Table::new(store.store.context_mut(), tt, init).ok()?;
54 Some(Box::new(wasm_table_t {
55 ext: wasm_extern_t {
56 store: store.store.clone(),
57 which: table.into(),
58 },
59 }))
60}
61
62#[unsafe(no_mangle)]
63pub unsafe extern "C" fn wasm_table_type(t: &wasm_table_t) -> Box<wasm_tabletype_t> {
64 let table = t.table();
65 let store = t.ext.store.context();
66 Box::new(wasm_tabletype_t::new(table.ty(&store)))
67}
68
69#[unsafe(no_mangle)]
70#[cfg(feature = "gc")]
71pub unsafe extern "C" fn wasm_table_get(
72 t: &mut wasm_table_t,
73 index: wasm_table_size_t,
74) -> Option<Box<wasm_ref_t>> {
75 let table = t.table();
76 let r = table.get(t.ext.store.context_mut(), u64::from(index))?;
77 wasm_ref_t::new(r)
78}
79
80#[unsafe(no_mangle)]
81#[cfg(feature = "gc")]
82pub unsafe extern "C" fn wasm_table_set(
83 t: &mut wasm_table_t,
84 index: wasm_table_size_t,
85 r: Option<&wasm_ref_t>,
86) -> bool {
87 let table = t.table();
88 let val = option_wasm_ref_t_to_ref(r, &table.ty(t.ext.store.context()));
89 table
90 .set(t.ext.store.context_mut(), u64::from(index), val)
91 .is_ok()
92}
93
94#[unsafe(no_mangle)]
95pub unsafe extern "C" fn wasm_table_size(t: &wasm_table_t) -> wasm_table_size_t {
96 let table = t.table();
97 let store = t.ext.store.context();
98 u32::try_from(table.size(&store)).unwrap()
99}
100
101#[unsafe(no_mangle)]
102#[cfg(feature = "gc")]
103pub unsafe extern "C" fn wasm_table_grow(
104 t: &mut wasm_table_t,
105 delta: wasm_table_size_t,
106 init: Option<&wasm_ref_t>,
107) -> bool {
108 let table = t.table();
109 let init = option_wasm_ref_t_to_ref(init, &table.ty(t.ext.store.context()));
110 table
111 .grow(t.ext.store.context_mut(), u64::from(delta), init)
112 .is_ok()
113}
114
115#[unsafe(no_mangle)]
116pub extern "C" fn wasm_table_as_extern(t: &mut wasm_table_t) -> &mut wasm_extern_t {
117 &mut t.ext
118}
119
120#[unsafe(no_mangle)]
121pub extern "C" fn wasm_table_as_extern_const(t: &wasm_table_t) -> &wasm_extern_t {
122 &t.ext
123}
124
125#[unsafe(no_mangle)]
126pub unsafe extern "C" fn wasmtime_table_new(
127 mut store: WasmtimeStoreContextMut<'_>,
128 tt: &wasm_tabletype_t,
129 init: &wasmtime_val_t,
130 out: &mut Table,
131) -> Option<Box<wasmtime_error_t>> {
132 #[cfg(feature = "gc")]
133 let mut store = RootScope::new(&mut store);
134
135 handle_result(
136 init.to_val(&mut store)
137 .ref_()
138 .ok_or_else(|| format_err!("wasmtime_table_new init value is not a reference"))
139 .and_then(|init| Table::new(&mut store, tt.ty().ty.clone(), init)),
140 |table| *out = table,
141 )
142}
143
144#[unsafe(no_mangle)]
145pub unsafe extern "C" fn wasmtime_table_type(
146 store: WasmtimeStoreContext<'_>,
147 table: &Table,
148) -> Box<wasm_tabletype_t> {
149 Box::new(wasm_tabletype_t::new(table.ty(store)))
150}
151
152#[unsafe(no_mangle)]
153pub extern "C" fn wasmtime_table_get(
154 store: WasmtimeStoreContextMut<'_>,
155 table: &Table,
156 index: u64,
157 ret: &mut MaybeUninit<wasmtime_val_t>,
158) -> bool {
159 let mut store = store;
160
161 #[cfg(feature = "gc")]
162 let mut store = RootScope::new(&mut store);
163
164 match table.get(&mut store, index) {
165 Some(r) => {
166 crate::initialize(ret, wasmtime_val_t::from_val(&mut store, r.into()));
167 true
168 }
169 None => false,
170 }
171}
172
173#[unsafe(no_mangle)]
174pub unsafe extern "C" fn wasmtime_table_set(
175 mut store: WasmtimeStoreContextMut<'_>,
176 table: &Table,
177 index: u64,
178 val: &wasmtime_val_t,
179) -> Option<Box<wasmtime_error_t>> {
180 #[cfg(feature = "gc")]
181 let mut store = RootScope::new(&mut store);
182
183 handle_result(
184 val.to_val(&mut store)
185 .ref_()
186 .ok_or_else(|| format_err!("wasmtime_table_set value is not a reference"))
187 .and_then(|val| table.set(&mut store, index, val)),
188 |()| {},
189 )
190}
191
192#[unsafe(no_mangle)]
193pub extern "C" fn wasmtime_table_size(store: WasmtimeStoreContext<'_>, table: &Table) -> u64 {
194 table.size(store)
195}
196
197#[unsafe(no_mangle)]
198pub unsafe extern "C" fn wasmtime_table_grow(
199 mut store: WasmtimeStoreContextMut<'_>,
200 table: &Table,
201 delta: u64,
202 val: &wasmtime_val_t,
203 prev_size: &mut u64,
204) -> Option<Box<wasmtime_error_t>> {
205 #[cfg(feature = "gc")]
206 let mut store = RootScope::new(&mut store);
207
208 handle_result(
209 val.to_val(&mut store)
210 .ref_()
211 .ok_or_else(|| format_err!("wasmtime_table_grow value is not a reference"))
212 .and_then(|val| table.grow(&mut store, delta, val)),
213 |prev| *prev_size = prev,
214 )
215}