alef 0.25.37

Opinionated polyglot binding generator for Rust libraries
Documentation 
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// Lifecycle hook registration for {{ service_pascal }}.{{ hook_name }}
#[no_mangle]
pub unsafe extern "system" fn {{ symbol }}(
    env: jni::JNIEnv,
    _class: jni::objects::JClass,
    owner_handle: jni::sys::jlong,
    callback: jni::objects::JObject,
) -> jni::sys::jint {
    catch_exc_and_return!(env; {
        let owner_ref = &*(owner_handle as *const {{ opaque_name }});
        let env = env;

        // Cache method ID for callback dispatch
        let callback_class = env.get_object_class(&callback)?;
        let method_id = env.get_method_id(&callback_class, "handle", "(L{{ core_import }}/RequestData;)L{{ core_import }}/Response;")?;

        // Store the global reference and method ID for later invocation
        let callback_global = env.new_global_ref(&callback)?;

        // Create bridge instance
        let bridge = {{ bridge_name }} {
            jvm: env.get_java_vm()?,
            callback_handle: callback_global,
            method_id,
        };

        // Register the hook callback in the service owner
        // The native runtime will invoke this callback at the appropriate pipeline phase
        owner_ref.inner.register_{{ hook_name }}_hook(std::sync::Arc::new(bridge));

        0
    })
}