60 lines
2.3 KiB
Rust
60 lines
2.3 KiB
Rust
use crate::dynamic_data::{EmptyScriptResolver, ScriptResolver};
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use crate::ffi::ffi_handle::FFIHandle;
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use std::sync::Arc;
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/// Instantiates a basic empty script resolver, that always returns None.
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#[no_mangle]
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extern "C" fn empty_script_resolver_new() -> FFIHandle<Arc<dyn ScriptResolver>> {
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let v: Arc<dyn ScriptResolver> = Arc::new(EmptyScriptResolver {});
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FFIHandle::get_handle(v.into())
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}
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/// Foreign function interfaces for the Webassembly script resolver.
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#[cfg(feature = "wasm")]
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mod web_assembly_script_resolver {
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use crate::dynamic_data::ScriptResolver;
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use crate::ffi::ffi_handle::{FFIHandle, FromFFIHandle};
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use crate::ffi::FFIResult;
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use crate::script_implementations::wasm::script_resolver::WebAssemblyScriptResolver;
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use std::sync::Arc;
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/// Instantiates a new WebAssemblyScriptResolver.
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#[no_mangle]
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extern "C" fn webassembly_script_resolver_new() -> FFIHandle<Arc<dyn ScriptResolver>> {
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let v: Arc<dyn ScriptResolver> = WebAssemblyScriptResolver::new();
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FFIHandle::get_handle(v.into())
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}
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/// Load a compiled WASM module.
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#[no_mangle]
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extern "C" fn webassembly_script_resolver_load_wasm_from_bytes(
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ptr: FFIHandle<Arc<dyn ScriptResolver>>,
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arr: *const u8,
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len: usize,
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) -> FFIResult<()> {
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#[allow(clippy::unwrap_used)] // Unwrap used, but we know it cannot fail.
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unsafe {
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let script_resolver = ptr.from_ffi_handle();
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let wasm_script_resolver = script_resolver
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.as_any()
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.downcast_ref::<WebAssemblyScriptResolver>()
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.unwrap();
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wasm_script_resolver
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.load_wasm_from_bytes(std::slice::from_raw_parts(arr, len))
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.into()
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}
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}
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/// Tells the script resolver we're done loading wasm modules, and to finalize the resolver.
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#[no_mangle]
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#[allow(clippy::unwrap_used)] // Unwrap used, but we know it cannot fail.
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extern "C" fn webassembly_script_resolver_finalize(ptr: FFIHandle<Arc<dyn ScriptResolver>>) -> FFIResult<()> {
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let script_resolver = ptr.from_ffi_handle();
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let wasm_script_resolver = script_resolver
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.as_any()
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.downcast_ref::<WebAssemblyScriptResolver>()
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.unwrap();
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wasm_script_resolver.finalize().into()
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}
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}
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