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bind,cmd: accept Java API in bound packages

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Accept Java API interface types as arguments and return values from
bound Go package functions and methods. Also, allow Go structs
to extend Java classes and implement Java interfaces as well as override
and implement methods.

This is the third and final part of the implementation of the golang/go#16876
proposal.

Fixes golang/go#16876

Change-Id: I6951dd87235553ce09abe5117a39a503466163c0
Reviewed-on: https://go-review.googlesource.com/28597
Reviewed-by: David Crawshaw <crawshaw@golang.org>
This commit is contained in:
Elias Naur
2016-09-22 10:16:33 +00:00
parent 08c3b2f4a5
commit bdf873ed8f
42 changed files with 2036 additions and 370 deletions
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bind/java/ClassesTest.java
+56
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@@ -13,6 +13,10 @@ import java.util.Arrays;
import java.util.Random;
import go.javapkg.Javapkg;
import go.javapkg.GoObject;
import go.javapkg.GoRunnable;
import go.javapkg.GoSubset;
import go.javapkg.GoInputStream;
public class ClassesTest extends InstrumentationTestCase {
public void testConst() {
@@ -65,4 +69,56 @@ public class ClassesTest extends InstrumentationTestCase {
}
assertNotNull("RuntimeException", exc);
}
public void testGoObject() {
Runnable r = new GoRunnable();
r.run();
assertTrue("GoRunnable.toString", r.toString().equals(Javapkg.ToStringPrefix));
Runnable r2 = ((GoRunnable)r).getThis();
assertTrue("GoObject.this", r == r2);
Object o = new GoObject();
assertEquals("GoObject hashCode", 42, o.hashCode());
Object o2 = Javapkg.constructGoObject();
assertEquals("GoObject hashCode", 42, o2.hashCode());
assertTrue("GoObject.toString", o.toString().startsWith(Javapkg.ToStringPrefix));
Javapkg.runRunnable(r);
final boolean[] ran = new boolean[1];
Runnable r3 = new Runnable(){
@Override public void run() {
ran[0] = true;
}
};
Javapkg.runRunnable(r3);
assertTrue("RunRunnable", ran[0]);
assertTrue("RunnableRoundtrip Java", r3 == Javapkg.runnableRoundtrip(r3));
assertTrue("RunnableRoundtrip Go", r == Javapkg.runnableRoundtrip(r));
Runnable r5 = Javapkg.constructGoRunnable();
r5.run();
}
public void testTypedException() {
InputStream is = new GoInputStream();
Exception exc = null;
try {
is.read();
} catch (IOException e) {
exc = e;
}
assertNotNull("IOException", exc);
assertEquals("IOException message", Javapkg.IOExceptionMessage, exc.getMessage());
}
public void testInnerClass() {
Character.Subset s = new Character.Subset(""){};
Character.Subset s2 = new GoSubset("");
Javapkg.callSubset(s);
Javapkg.callSubset(s2);
}
public void testNew() {
Object o = Javapkg.newJavaObject();
assertTrue("new Object()", o != null);
Integer i = Javapkg.newJavaInteger();
assertEquals("new Integer(42)", 42, i.intValue());
}
}