/*
Copyright 2009-2013 Attila Szegedi
Licensed under both the Apache License, Version 2.0 (the "Apache License")
and the BSD License (the "BSD License"), with licensee being free to
choose either of the two at their discretion.
You may not use this file except in compliance with either the Apache
License or the BSD License.
If you choose to use this file in compliance with the Apache License, the
following notice applies to you:
You may obtain a copy of the Apache 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.
If you choose to use this file in compliance with the BSD License, the
following notice applies to you:
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
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* Neither the name of the copyright holder nor the names of
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IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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*/
package org.dynalang.dynalink.beans;
import java.lang.invoke.MethodHandles;
import java.lang.invoke.MethodType;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.StringTokenizer;
import junit.framework.TestCase;
import org.dynalang.dynalink.DynamicLinker;
import org.dynalang.dynalink.DynamicLinkerFactory;
import org.dynalang.dynalink.MonomorphicCallSite;
import org.dynalang.dynalink.NoSuchDynamicMethodException;
import org.dynalang.dynalink.support.CallSiteDescriptorFactory;
public class TestCompositeOperations extends TestCase {
public void testGetElemPropMethodOnMap() throws Throwable {
final String op = "dyn:getElem|getProp|getMethod";
final Map<String, Object> map = new HashMap<>();
assertNull(invokeBoth(op, map, "foo"));
assertEquals(true, invokeBoth(op, map, "empty"));
assertSame(getDynamicMethod(HashMap.class, "size"), invokeBoth(op, map, "size"));
map.put("foo", "bar");
assertSame("bar", invokeBoth(op, map, "foo"));
map.put("empty", "xyz");
assertSame("xyz", invokeBoth(op, map, "empty"));
map.put("size", "abc");
assertSame("abc", invokeBoth(op, map, "size"));
}
public static class HashMapWithProperty extends HashMap<Object, Object> {
private Object color;
public void setColor(Object color) {
this.color = color;
}
public Object getColor() {
return color;
}
}
public void testSetElemPropOnMap() throws Throwable {
final String op = "dyn:setElem|setProp";
final HashMapWithProperty map = new HashMapWithProperty();
invoke(op, map, "color", "foo");
assertSame("foo", map.get("color"));
invokeFixedKey(op, map, "color", "bar");
assertSame("bar", map.get("color"));
assertNull(map.getColor());
}
public void testSetPropElemOnMap() throws Throwable {
final String op = "dyn:setProp|setElem";
final HashMapWithProperty map = new HashMapWithProperty();
invoke(op, map, "color", "foo");
assertNull(map.get("color"));
assertSame("foo", map.getColor());
invokeFixedKey(op, map, "color", "bar");
assertNull(map.get("color"));
assertSame("bar", map.getColor());
invoke(op, map, "shape", "baz");
assertSame("baz", map.get("shape"));
invokeFixedKey(op, map, "shape", "bay");
assertSame("bay", map.get("shape"));
assertSame("bar", map.getColor());
}
public static class ArrayListWithProperty extends ArrayList<Object> {
private Object color;
public void setColor(Object color) {
this.color = color;
}
public Object getColor() {
return color;
}
}
public void testSetElemPropOnList() throws Throwable {
final String op = "dyn:setElem|setProp";
final ArrayListWithProperty list = new ArrayListWithProperty();
invoke(op, list, "color", "foo1");
assertSame("foo1", list.getColor());
invokeFixedKey(op, list, "color", "foo2");
assertSame("foo2", list.getColor());
list.add("elem0");
invoke(op, list, 0, "elem0-changed1");
assertSame("elem0-changed1", list.get(0));
invokeFixedKey(op, list, 0, "elem0-changed2");
assertSame("elem0-changed2", list.get(0));
}
public void testSetPropElemOnList() throws Throwable {
final String op = "dyn:setProp|setElem";
final ArrayListWithProperty list = new ArrayListWithProperty();
invoke(op, list, "color", "foo1");
assertSame("foo1", list.getColor());
invokeFixedKey(op, list, "color", "foo2");
assertSame("foo2", list.getColor());
list.add("elem0");
invoke(op, list, 0, "elem0-changed1");
assertSame("elem0-changed1", list.get(0));
invokeFixedKey(op, list, 0, "elem0-changed2");
assertSame("elem0-changed2", list.get(0));
}
public void testGetElemPropMethodOnList() throws Throwable {
final String op = "dyn:getElem|getProp|getMethod";
final List<Object> list = new ArrayList<>();
// As the key is fixed at link time, an IndexOutOfBoundsException is expected
try {
invokeFixedKey(op, list, 0);
fail();
} catch(IndexOutOfBoundsException e) {
}
try {
invoke(op, list, 0);
fail();
} catch(IndexOutOfBoundsException e) {
}
// We can decide with 100% certainty that there's neither an element, property, nor method named "foo" at link
// time.
try {
invokeFixedKey(op, list, "foo");
fail();
} catch(NoSuchDynamicMethodException e) {
// This is expected
}
assertNull(invoke(op, list, "foo"));
assertEquals(true, invokeBoth(op, list, "empty"));
assertSame(getDynamicMethod(ArrayList.class, "size"), invokeBoth(op, list, "size"));
list.add("bar");
assertSame("bar", invokeBoth(op, list, 0));
}
public void testGetElemPropMethodOnArray() throws Throwable {
final String op = "dyn:getElem|getProp|getMethod";
final Object[] array = new Object[1];
assertSame(1, invokeBoth(op, array, "length"));
assertSame(getDynamicMethod(Object[].class, "hashCode"), invokeBoth(op, array, "hashCode"));
assertNull(invokeBoth(op, array, 0));
// We can decide with 100% certainty that there's neither an element, property, nor method named "foo" at link
// time.
try {
invokeFixedKey(op, array, "foo");
fail();
} catch(NoSuchDynamicMethodException e) {
// This is expected
}
assertNull(invoke(op, array, "foo"));
array[0] = "bar";
assertSame("bar", invokeBoth(op, array, 0));
}
public void testGetPropElemMethod() throws Throwable {
final String op = "dyn:getProp|getElem|getMethod";
final Map<String, Object> map = new HashMap<>();
assertNull(invokeBoth(op, map, "foo"));
assertEquals(true, invokeBoth(op, map, "empty"));
assertSame(getDynamicMethod(HashMap.class, "size"), invokeBoth(op, map, "size"));
map.put("foo", "bar");
assertSame("bar", invokeBoth(op, map, "foo"));
map.put("empty", "xyz");
assertEquals(false, invokeBoth(op, map, "empty"));
map.put("size", "abc");
assertSame("abc", invokeBoth(op, map, "size"));
}
public void testGetMethodElemProp() throws Throwable {
final String op = "dyn:getMethod|getProp|getElem";
final Map<String, Object> map = new HashMap<>();
assertNull(invokeBoth(op, map, "foo"));
assertEquals(true, invokeBoth(op, map, "empty"));
assertSame(getDynamicMethod(HashMap.class, "size"), invokeBoth(op, map, "size"));
map.put("foo", "bar");
assertSame("bar", invokeBoth(op, map, "foo"));
map.put("empty", "xyz");
assertEquals(false, invokeBoth(op, map, "empty"));
map.put("size", "abc");
assertSame(getDynamicMethod(HashMap.class, "size"), invokeBoth(op, map, "size"));
}
private static final DynamicLinker linker = new DynamicLinkerFactory().createLinker();
private static Object invokeBoth(String operation, Object... args) throws Throwable {
final Object o = invoke(operation, args);
assertSame(o, invokeFixedKey(operation, args));
return o;
}
private static Object invokeFixedKey(String operation, Object... args) throws Throwable {
ArrayList<Object> argsList = new ArrayList<>(Arrays.asList(args));
argsList.remove(1);
return invoke(operation + ":" + args[1], argsList.toArray());
}
private static Object invoke(String operation, Object... args) throws Throwable {
int argCount;
if (operation.startsWith("dyn:get")) {
argCount = 2;
} else if(operation.startsWith("dyn:set")) {
argCount = 3;
} else {
throw new AssertionError();
}
final int tokens = new StringTokenizer(operation, ":").countTokens();
if(tokens == 3) {
argCount -= 1;
} else {
assertEquals(2, tokens);
}
List<Class<?>> argTypes = new ArrayList<>(argCount);
for(int i = 0; i < argCount; ++i) {
argTypes.add(Object.class);
}
return linker.link(new MonomorphicCallSite(CallSiteDescriptorFactory.create(MethodHandles.publicLookup(),
operation, MethodType.methodType(Object.class, argTypes)))).dynamicInvoker().invokeWithArguments(args);
}
private static DynamicMethod getDynamicMethod(Class<?> clazz, String name) {
return ((BeanLinker)BeansLinker.getLinkerForClass(clazz)).getDynamicMethod(name);
}
}