oo-bindgen 0.8.8

DSL-based binding geneator for C, C++, Java, and C#
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49

use jni::objects::JValue;
use jni::signature::*;

pub struct Duration {
    class: jni::objects::GlobalRef,
    of_millis_method: jni::objects::JStaticMethodID<'static>,
    of_seconds_method: jni::objects::JStaticMethodID<'static>,
    to_millis_method: jni::objects::JMethodID<'static>,
    get_seconds_method: jni::objects::JMethodID<'static>,
}

impl Duration {
    pub fn init(env: &jni::JNIEnv) -> Self {
        let class = env.find_class("Ljava/time/Duration;").expect("Unable to find java/time/Duration class");

        let of_millis_method = env.get_static_method_id(class, "ofMillis", "(J)Ljava/time/Duration;").map(|mid| mid.into_inner().into()).expect("Unable to find Duration::ofMillis()");
        let of_seconds_method = env.get_static_method_id(class, "ofSeconds", "(J)Ljava/time/Duration;").map(|mid| mid.into_inner().into()).expect("Unable to find Duration::ofSeconds()");
        let to_millis_method = env.get_method_id(class, "toMillis", "()J").map(|mid| mid.into_inner().into()).expect("Unable to find Duration::toMillis()");
        let get_seconds_method = env.get_method_id(class, "getSeconds", "()J").map(|mid| mid.into_inner().into()).expect("Unable to find Duration::getSeconds()");

        Self {
            class: env.new_global_ref(class).unwrap(),
            of_millis_method,
            of_seconds_method,
            to_millis_method,
            get_seconds_method,
        }
    }

    pub fn to_rust_millis(&self, env: &jni::JNIEnv, obj: jni::sys::jobject) -> u64 {
        env.call_method_unchecked(obj, self.to_millis_method, JavaType::Primitive(Primitive::Long), &[]).unwrap().j().unwrap() as u64
    }

    pub fn to_rust_seconds(&self, env: &jni::JNIEnv, obj: jni::sys::jobject) -> u64 {
        env.call_method_unchecked(obj, self.get_seconds_method, JavaType::Primitive(Primitive::Long), &[]).unwrap().j().unwrap() as u64
    }

    pub fn to_jni_millis(&self, env: &jni::JNIEnv, millis: u64) -> jni::sys::jobject {
        env.call_static_method_unchecked(&self.class, self.of_millis_method, JavaType::Object("java/time/Duration".to_string()), &[JValue::Long(millis as i64)])
            .unwrap()
            .l().unwrap().into_inner()
    }

    pub fn to_jni_seconds(&self, env: &jni::JNIEnv, seconds: u64) -> jni::sys::jobject {
        env.call_static_method_unchecked(&self.class, self.of_seconds_method, JavaType::Object("java/time/Duration".to_string()), &[JValue::Long(seconds as i64)])
            .unwrap()
            .l().unwrap().into_inner()
    }
}