alef 0.62.2

Opinionated polyglot binding generator for Rust libraries
Documentation 
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#[unsafe(no_mangle)]
pub unsafe extern "system" fn {{ symbol }}(
    mut env: EnvUnowned,
    _class: JClass,
    handle: jlong,
) {
    // SAFETY: env is a valid EnvUnowned passed by the JVM for this native call frame.
    let mut __jni_attach_guard = unsafe { jni::AttachGuard::from_unowned(env.as_raw()) };
    let env = __jni_attach_guard.borrow_env_mut();
    let Some(()) = run_or_throw(env, |_env| {
    if handle == 0 { return; }
    // SAFETY: `handle` was allocated by the matching constructor shim and
    // ownership is transferred back here for drop via Box::from_raw.
    unsafe { let _ = Box::from_raw(handle as *mut core_crate::{{ type_name }}); }
    }) else {
        return;
    };
}