47 lines
1.4 KiB
Rust
47 lines
1.4 KiB
Rust
use crate::dynamic_data::{Gen7MiscLibrary, MiscLibrary};
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use crate::ffi::ffi_handle::FFIHandle;
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use crate::static_data::TimeOfDay;
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use std::sync::Arc;
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/// Instantiates a new MiscLibrary.
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#[no_mangle]
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extern "C" fn gen_7_misc_library_new(get_time_of_day_fn: FFIGetTimeOfDayFn) -> FFIHandle<Arc<dyn MiscLibrary>> {
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let v: Arc<dyn MiscLibrary> = Arc::new(Gen7MiscLibrary::new(Box::new(get_time_of_day_fn)));
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FFIHandle::get_handle(v.into())
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}
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/// Wrapper class for easier use of an external function pointer.
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#[repr(C)]
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pub(super) struct FFIGetTimeOfDayFn {
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/// The actual C function to be called. Note that we pass the batch id as a pair of u64s. This
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/// is because u128 does not have a stable ABI yet.
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f: extern "C" fn() -> u8,
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}
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impl FFIGetTimeOfDayFn {
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/// Calls the actual wrapped function in the correct format.
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fn call_self(&self) -> TimeOfDay {
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unsafe { std::mem::transmute((self.f)()) }
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}
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}
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impl FnMut<()> for FFIGetTimeOfDayFn {
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extern "rust-call" fn call_mut(&mut self, _: ()) -> Self::Output {
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self.call_self()
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}
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}
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impl FnOnce<()> for FFIGetTimeOfDayFn {
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type Output = TimeOfDay;
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extern "rust-call" fn call_once(self, _: ()) -> Self::Output {
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self.call_self()
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}
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}
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impl Fn<()> for FFIGetTimeOfDayFn {
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extern "rust-call" fn call(&self, _: ()) -> Self::Output {
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self.call_self()
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}
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}
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