54 lines
1.7 KiB
Rust
54 lines
1.7 KiB
Rust
use crate::ffi::{BorrowedPtr, ExternPointer, IdentifiablePointer, OwnedPtr};
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use crate::static_data::{Nature, NatureLibrary, NatureLibraryImpl};
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use std::ffi::{c_char, CStr, CString};
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use std::ptr::drop_in_place;
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use std::sync::Arc;
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/// Creates a new nature library with a given capacity.
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#[no_mangle]
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extern "C" fn nature_library_new(capacity: usize) -> IdentifiablePointer<Box<dyn NatureLibrary>> {
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let b: Box<dyn NatureLibrary> = Box::new(NatureLibraryImpl::new(capacity));
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b.into()
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}
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/// Drop a nature library.
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#[no_mangle]
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unsafe extern "C" fn nature_library_drop(ptr: OwnedPtr<Box<dyn NatureLibrary>>) {
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drop_in_place(ptr);
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}
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/// Adds a new nature with name to the library.
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#[no_mangle]
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unsafe extern "C" fn nature_library_load_nature(
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mut ptr: ExternPointer<Box<dyn NatureLibrary>>,
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name: BorrowedPtr<c_char>,
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nature: OwnedPtr<Arc<dyn Nature>>,
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) {
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ptr.as_mut()
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.load_nature(CStr::from_ptr(name).into(), nature.as_ref().unwrap().clone())
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}
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/// Gets a nature by name.
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#[no_mangle]
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unsafe extern "C" fn nature_library_get_nature(
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ptr: ExternPointer<Box<dyn NatureLibrary>>,
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name: BorrowedPtr<c_char>,
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) -> IdentifiablePointer<Arc<dyn Nature>> {
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if let Some(nature) = ptr.as_ref().get_nature(&CStr::from_ptr(name).into()) {
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nature.into()
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} else {
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IdentifiablePointer::none()
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}
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}
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/// Finds a nature name by nature.
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#[no_mangle]
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unsafe extern "C" fn nature_library_get_nature_name(
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ptr: ExternPointer<Box<dyn NatureLibrary>>,
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nature: BorrowedPtr<Arc<dyn Nature>>,
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) -> OwnedPtr<c_char> {
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CString::new(ptr.as_ref().get_nature_name(nature.as_ref().unwrap()).str())
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.unwrap()
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.into_raw()
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}
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