2024-09-22 00:09:46 +02:00
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use jni::objects::JString;
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2024-09-21 17:52:20 +02:00
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pub use jni_toolbox_macro::jni;
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2024-09-21 17:01:00 +02:00
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2024-09-21 17:52:20 +02:00
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pub trait JniToolboxError: std::error::Error {
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fn jclass(&self) -> String;
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2024-09-21 17:01:00 +02:00
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}
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2024-09-21 18:48:30 +02:00
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impl JniToolboxError for jni::errors::Error {
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fn jclass(&self) -> String {
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"java/lang/RuntimeException".to_string()
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}
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}
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2024-09-21 20:15:04 +02:00
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impl JniToolboxError for jni::errors::JniError {
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fn jclass(&self) -> String {
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"java/lang/RuntimeException".to_string()
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}
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}
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2024-09-22 00:09:46 +02:00
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pub fn from_java_static<'j, T: FromJava<'j>>(env: &mut jni::JNIEnv<'j>, val: T::T) -> Result<T, jni::errors::Error> {
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T::from_java(env, val)
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}
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pub trait FromJava<'j> : Sized {
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type T : Sized;
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fn from_java(env: &mut jni::JNIEnv<'j>, value: Self::T) -> Result<Self, jni::errors::Error>;
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}
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impl<'j> FromJava<'j> for bool {
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type T = jni::sys::jboolean;
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#[inline]
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fn from_java(_: &mut jni::JNIEnv, value: Self::T) -> Result<Self, jni::errors::Error> {
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Ok(value == 1)
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}
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}
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impl<'j> FromJava<'j> for i64 {
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type T = jni::sys::jlong;
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#[inline]
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fn from_java(_: &mut jni::JNIEnv, value: Self::T) -> Result<Self, jni::errors::Error> {
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Ok(value)
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}
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}
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impl<'j> FromJava<'j> for i32 {
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type T = jni::sys::jint;
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#[inline]
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fn from_java(_: &mut jni::JNIEnv, value: Self::T) -> Result<Self, jni::errors::Error> {
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Ok(value)
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}
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}
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impl<'j> FromJava<'j> for i16 {
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type T = jni::sys::jshort;
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#[inline]
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fn from_java(_: &mut jni::JNIEnv, value: Self::T) -> Result<Self, jni::errors::Error> {
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Ok(value)
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}
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}
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impl<'j> FromJava<'j> for f32 {
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type T = jni::sys::jfloat;
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#[inline]
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fn from_java(_: &mut jni::JNIEnv, value: Self::T) -> Result<Self, jni::errors::Error> {
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Ok(value)
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}
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}
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impl<'j> FromJava<'j> for f64 {
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type T = jni::sys::jdouble;
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#[inline]
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fn from_java(_: &mut jni::JNIEnv, value: Self::T) -> Result<Self, jni::errors::Error> {
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Ok(value)
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}
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}
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impl<'j> FromJava<'j> for String {
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type T = jni::objects::JString<'j>;
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fn from_java(env: &mut jni::JNIEnv<'j>, value: Self::T) -> Result<Self, jni::errors::Error> {
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if value.is_null() { return Err(jni::errors::Error::NullPtr("string can't be null")) };
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Ok(env.get_string(&value)?.into())
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}
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}
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impl<'j> FromJava<'j> for Option<String> {
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type T = jni::objects::JString<'j>;
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fn from_java(env: &mut jni::JNIEnv<'j>, value: Self::T) -> Result<Self, jni::errors::Error> {
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if value.is_null() { return Ok(None) };
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Ok(Some(String::from_java(env, value)?))
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}
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}
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pub trait IntoJava<'j> {
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type T;
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fn into_java(self, env: &mut jni::JNIEnv<'j>) -> Result<Self::T, jni::errors::Error>;
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}
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impl<'j> IntoJava<'j> for String {
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type T = JString<'j>;
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fn into_java(self, env: &mut jni::JNIEnv<'j>) -> Result<Self::T, jni::errors::Error> {
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env.new_string(self)
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}
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}
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