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use errors::*;

use descriptors::Desc;

use objects::JClass;
use objects::JFieldID;
use objects::JStaticFieldID;

use strings::JNIString;

use JNIEnv;

impl<'a, 'c, T, U, V> Desc<'a, JFieldID<'a>> for (T, U, V)
where
    T: Desc<'a, JClass<'c>>,
    U: Into<JNIString>,
    V: Into<JNIString>,
{
    fn lookup(self, env: &JNIEnv<'a>) -> Result<JFieldID<'a>> {
        env.get_field_id(self.0, self.1, self.2)
    }
}

impl<'a, 'c, T, U, V> Desc<'a, JStaticFieldID<'a>> for (T, U, V)
where
    T: Desc<'a, JClass<'c>>,
    U: Into<JNIString>,
    V: Into<JNIString>,
{
    fn lookup(self, env: &JNIEnv<'a>) -> Result<JStaticFieldID<'a>> {
        env.get_static_field_id(self.0, self.1, self.2)
    }
}