✨ feat: Add mod core to JNI

rust/src/core.rs

@@ -0,0 +1,29 @@
+/*
+* Copyright (c) 2024. caoccao.com Sam Cao
+* All rights reserved.
+
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+
+* http://www.apache.org/licenses/LICENSE-2.0
+
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+use jni::sys::jstring;
+use jni::JNIEnv;
+use std::ptr::null_mut;
+
+pub const VERSION: &'static str = "0.1.0";
+
+pub fn get_version<'local>(env: JNIEnv<'local>) -> jstring {
+  match env.new_string(VERSION) {
+    Ok(s) => s.into_raw(),
+    Err(_) => null_mut(),
+  }
+}

rust/src/lib.rs

@@ -19,13 +19,14 @@ use jni::objects::JClass;
 use jni::sys::jstring;
 use jni::JNIEnv;
 
-pub const VERSION: &'static str = "0.1.0";
+mod core;
+
+pub use core::VERSION;
 
 #[no_mangle]
 pub extern "system" fn Java_com_caoccao_javet_swc4j_Swc4jNative_getVersion<'local>(
-  jni_env: JNIEnv<'local>,
+  env: JNIEnv<'local>,
   _: JClass<'local>,
 ) -> jstring {
-  let output = jni_env.new_string(VERSION).expect("Couldn't get version!");
-  output.into_raw()
+  core::get_version(env)
 }

src/main/java/com/caoccao/javet/swc4j/exceptions/Swc4jException.java

@@ -21,7 +21,7 @@
  *
  * @since 0.1.0
  */
-public class Swc4jException extends Exception {
+public abstract class Swc4jException extends Exception {
     /**
      * Instantiates a new Swc4j exception.
      *