JS: add reflection support for methods

This commit is contained in:
Alexey Andreev 2016-10-22 22:19:20 +03:00
parent 12dded73f6
commit 669594fc9c
7 changed files with 566 additions and 12 deletions

View File

@ -17,6 +17,7 @@ package org.teavm.classlib.impl;
import java.lang.reflect.Constructor; import java.lang.reflect.Constructor;
import java.lang.reflect.Field; import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.LinkedHashMap; import java.util.LinkedHashMap;
import java.util.LinkedHashSet; import java.util.LinkedHashSet;
import java.util.List; import java.util.List;
@ -46,12 +47,17 @@ public class ReflectionDependencyListener extends AbstractDependencyListener {
private MethodReference fieldSet = new MethodReference(Field.class, "set", Object.class, Object.class, void.class); private MethodReference fieldSet = new MethodReference(Field.class, "set", Object.class, Object.class, void.class);
private MethodReference newInstance = new MethodReference(Constructor.class, "newInstance", Object[].class, private MethodReference newInstance = new MethodReference(Constructor.class, "newInstance", Object[].class,
Object.class); Object.class);
private MethodReference invokeMethod = new MethodReference(Method.class, "invoke", Object.class, Object[].class,
Object.class);
private MethodReference getFields = new MethodReference(Class.class, "getDeclaredFields", Field[].class); private MethodReference getFields = new MethodReference(Class.class, "getDeclaredFields", Field[].class);
private MethodReference getConstructors = new MethodReference(Class.class, "getDeclaredConstructors", private MethodReference getConstructors = new MethodReference(Class.class, "getDeclaredConstructors",
Constructor[].class); Constructor[].class);
private MethodReference getMethods = new MethodReference(Class.class, "getDeclaredMethods",
Method[].class);
private boolean fieldGetHandled; private boolean fieldGetHandled;
private boolean fieldSetHandled; private boolean fieldSetHandled;
private boolean newInstanceHandled; private boolean newInstanceHandled;
private boolean invokeHandled;
private Map<String, Set<String>> accessibleFieldCache = new LinkedHashMap<>(); private Map<String, Set<String>> accessibleFieldCache = new LinkedHashMap<>();
private Map<String, Set<MethodDescriptor>> accessibleMethodCache = new LinkedHashMap<>(); private Map<String, Set<MethodDescriptor>> accessibleMethodCache = new LinkedHashMap<>();
private Set<String> classesWithReflectableFields = new LinkedHashSet<>(); private Set<String> classesWithReflectableFields = new LinkedHashSet<>();
@ -85,13 +91,15 @@ public class ReflectionDependencyListener extends AbstractDependencyListener {
handleFieldSet(agent, method, location); handleFieldSet(agent, method, location);
} else if (method.getReference().equals(newInstance)) { } else if (method.getReference().equals(newInstance)) {
handleNewInstance(agent, method, location); handleNewInstance(agent, method, location);
} else if (method.getReference().equals(invokeMethod)) {
handleInvoke(agent, method, location);
} else if (method.getReference().equals(getFields)) { } else if (method.getReference().equals(getFields)) {
method.getVariable(0).getClassValueNode().addConsumer(type -> { method.getVariable(0).getClassValueNode().addConsumer(type -> {
if (!type.getName().startsWith("[")) { if (!type.getName().startsWith("[")) {
classesWithReflectableFields.add(type.getName()); classesWithReflectableFields.add(type.getName());
} }
}); });
} else if (method.getReference().equals(getConstructors)) { } else if (method.getReference().equals(getConstructors) || method.getReference().equals(getMethods)) {
method.getVariable(0).getClassValueNode().addConsumer(type -> { method.getVariable(0).getClassValueNode().addConsumer(type -> {
if (!type.getName().startsWith("[")) { if (!type.getName().startsWith("[")) {
classesWithReflectableMethods.add(type.getName()); classesWithReflectableMethods.add(type.getName());
@ -171,8 +179,41 @@ public class ReflectionDependencyListener extends AbstractDependencyListener {
linkClassIfNecessary(agent, calledMethod, location); linkClassIfNecessary(agent, calledMethod, location);
} }
}); });
classValueNode.connect(method.getResult());
} }
private void handleInvoke(DependencyAgent agent, MethodDependency method, CallLocation location) {
if (invokeHandled) {
return;
}
invokeHandled = true;
DependencyNode classValueNode = agent.linkMethod(getMethods, location).getVariable(0).getClassValueNode();
classValueNode.addConsumer(reflectedType -> {
if (reflectedType.getName().startsWith("[")) {
return;
}
Set<MethodDescriptor> accessibleMethods = getAccessibleMethods(agent, reflectedType.getName());
ClassReader cls = agent.getClassSource().get(reflectedType.getName());
for (MethodDescriptor methodDescriptor : accessibleMethods) {
MethodReader calledMethod = cls.getMethod(methodDescriptor);
MethodDependency calledMethodDep = agent.linkMethod(calledMethod.getReference(), location);
calledMethodDep.use();
for (int i = 0; i < calledMethod.parameterCount(); ++i) {
propagateSet(agent, methodDescriptor.parameterType(i), method.getVariable(2).getArrayItem(),
calledMethodDep.getVariable(i + 1), location);
}
propagateSet(agent, ValueType.object(reflectedType.getName()), method.getVariable(1),
calledMethodDep.getVariable(0), location);
propagateGet(agent, calledMethod.getResultType(), calledMethodDep.getResult(),
method.getResult(), location);
linkClassIfNecessary(agent, calledMethod, location);
}
});
}
private void linkClassIfNecessary(DependencyAgent agent, MemberReader member, CallLocation location) { private void linkClassIfNecessary(DependencyAgent agent, MemberReader member, CallLocation location) {
if (member.hasModifier(ElementModifier.STATIC)) { if (member.hasModifier(ElementModifier.STATIC)) {
agent.linkClass(member.getOwnerName(), location).initClass(location); agent.linkClass(member.getOwnerName(), location).initClass(location);

View File

@ -23,6 +23,9 @@ public interface JSMethodMember extends JSMember {
@JSProperty @JSProperty
PlatformSequence<PlatformClass> getParameterTypes(); PlatformSequence<PlatformClass> getParameterTypes();
@JSProperty
PlatformClass getReturnType();
@JSProperty @JSProperty
JSCallable getCallable(); JSCallable getCallable();
} }

View File

@ -70,9 +70,45 @@ public class ClassGenerator implements Generator, Injector, DependencyPlugin {
case "newEmptyInstance": case "newEmptyInstance":
method.getVariable(0).getClassValueNode().connect(method.getResult()); method.getVariable(0).getClassValueNode().connect(method.getResult());
break; break;
case "getSuperclass":
reachGetSuperclass(agent, method);
break;
case "getInterfaces":
reachGetInterfaces(agent, method);
break;
} }
} }
private void reachGetSuperclass(DependencyAgent agent, MethodDependency method) {
method.getVariable(0).getClassValueNode().addConsumer(type -> {
String className = type.getName();
if (className.startsWith("[")) {
return;
}
ClassReader cls = agent.getClassSource().get(className);
if (cls != null && cls.getParent() != null) {
method.getResult().getClassValueNode().propagate(agent.getType(cls.getParent()));
}
});
}
private void reachGetInterfaces(DependencyAgent agent, MethodDependency method) {
method.getVariable(0).getClassValueNode().addConsumer(type -> {
String className = type.getName();
if (className.startsWith("[")) {
return;
}
ClassReader cls = agent.getClassSource().get(className);
if (cls != null) {
for (String iface : cls.getInterfaces()) {
method.getResult().getClassValueNode().propagate(agent.getType(iface));
}
}
});
}
private void generateCreateMetadata(GeneratorContext context, SourceWriter writer) throws IOException { private void generateCreateMetadata(GeneratorContext context, SourceWriter writer) throws IOException {
ReflectionDependencyListener reflection = context.getService(ReflectionDependencyListener.class); ReflectionDependencyListener reflection = context.getService(ReflectionDependencyListener.class);
for (String className : reflection.getClassesWithReflectableFields()) { for (String className : reflection.getClassesWithReflectableFields()) {
@ -142,6 +178,10 @@ public class ClassGenerator implements Generator, Injector, DependencyPlugin {
writer.append(']'); writer.append(']');
}); });
appendProperty(writer, "returnType", false, () -> {
writer.append(context.typeToClassString(method.getResultType()));
});
appendProperty(writer, "callable", false, () -> { appendProperty(writer, "callable", false, () -> {
if (accessibleMethods != null && accessibleMethods.contains(method.getDescriptor())) { if (accessibleMethods != null && accessibleMethods.contains(method.getDescriptor())) {
renderCallable(writer, method); renderCallable(writer, method);

View File

@ -23,6 +23,7 @@ import java.util.HashMap;
import java.util.HashSet; import java.util.HashSet;
import java.util.List; import java.util.List;
import java.util.Map; import java.util.Map;
import java.util.Objects;
import java.util.Set; import java.util.Set;
import org.teavm.backend.javascript.spi.GeneratedBy; import org.teavm.backend.javascript.spi.GeneratedBy;
import org.teavm.backend.javascript.spi.InjectedBy; import org.teavm.backend.javascript.spi.InjectedBy;
@ -33,13 +34,13 @@ import org.teavm.classlib.impl.reflection.JSField;
import org.teavm.classlib.impl.reflection.JSMethodMember; import org.teavm.classlib.impl.reflection.JSMethodMember;
import org.teavm.classlib.java.lang.annotation.TAnnotation; import org.teavm.classlib.java.lang.annotation.TAnnotation;
import org.teavm.classlib.java.lang.reflect.TAnnotatedElement; import org.teavm.classlib.java.lang.reflect.TAnnotatedElement;
import org.teavm.classlib.java.lang.reflect.TConstructor;
import org.teavm.classlib.java.lang.reflect.TField;
import org.teavm.classlib.java.lang.reflect.TMethod;
import org.teavm.classlib.java.lang.reflect.TModifier;
import org.teavm.dependency.PluggableDependency; import org.teavm.dependency.PluggableDependency;
import org.teavm.interop.Address; import org.teavm.interop.Address;
import org.teavm.interop.DelegateTo; import org.teavm.interop.DelegateTo;
import org.teavm.classlib.java.lang.reflect.TConstructor;
import org.teavm.classlib.java.lang.reflect.TField;
import org.teavm.classlib.java.lang.reflect.TModifier;
import org.teavm.dependency.PluggableDependency;
import org.teavm.jso.core.JSArray; import org.teavm.jso.core.JSArray;
import org.teavm.platform.Platform; import org.teavm.platform.Platform;
import org.teavm.platform.PlatformClass; import org.teavm.platform.PlatformClass;
@ -58,6 +59,7 @@ public class TClass<T> extends TObject implements TAnnotatedElement {
private TField[] declaredFields; private TField[] declaredFields;
private TField[] fields; private TField[] fields;
private TConstructor<T>[] declaredConstructors; private TConstructor<T>[] declaredConstructors;
private TMethod[] declaredMethods;
private static boolean reflectionInitialized; private static boolean reflectionInitialized;
private TClass(PlatformClass platformClass) { private TClass(PlatformClass platformClass) {
@ -146,6 +148,9 @@ public class TClass<T> extends TObject implements TAnnotatedElement {
} }
public TField[] getDeclaredFields() throws TSecurityException { public TField[] getDeclaredFields() throws TSecurityException {
if (isPrimitive() || isArray()) {
return new TField[0];
}
if (declaredFields == null) { if (declaredFields == null) {
initReflection(); initReflection();
JSClass jsClass = (JSClass) getPlatformClass().getMetadata(); JSClass jsClass = (JSClass) getPlatformClass().getMetadata();
@ -158,7 +163,7 @@ public class TClass<T> extends TObject implements TAnnotatedElement {
jsField.getSetter()); jsField.getSetter());
} }
} }
return declaredFields; return declaredFields.clone();
} }
private static void initReflection() { private static void initReflection() {
@ -172,6 +177,10 @@ public class TClass<T> extends TObject implements TAnnotatedElement {
private static native void createMetadata(); private static native void createMetadata();
public TField[] getFields() throws TSecurityException { public TField[] getFields() throws TSecurityException {
if (isPrimitive() || isArray()) {
return new TField[0];
}
if (fields == null) { if (fields == null) {
List<TField> fieldList = new ArrayList<>(); List<TField> fieldList = new ArrayList<>();
TClass<?> cls = this; TClass<?> cls = this;
@ -191,7 +200,7 @@ public class TClass<T> extends TObject implements TAnnotatedElement {
fields = fieldList.toArray(new TField[fieldList.size()]); fields = fieldList.toArray(new TField[fieldList.size()]);
} }
return fields; return fields.clone();
} }
public TField getDeclaredField(String name) throws TNoSuchFieldError { public TField getDeclaredField(String name) throws TNoSuchFieldError {
@ -246,6 +255,10 @@ public class TClass<T> extends TObject implements TAnnotatedElement {
@SuppressWarnings({ "raw", "unchecked" }) @SuppressWarnings({ "raw", "unchecked" })
public TConstructor<?>[] getDeclaredConstructors() throws TSecurityException { public TConstructor<?>[] getDeclaredConstructors() throws TSecurityException {
if (isPrimitive() || isArray()) {
return new TConstructor<?>[0];
}
if (declaredConstructors == null) { if (declaredConstructors == null) {
initReflection(); initReflection();
JSClass jsClass = (JSClass) getPlatformClass().getMetadata(); JSClass jsClass = (JSClass) getPlatformClass().getMetadata();
@ -267,7 +280,7 @@ public class TClass<T> extends TObject implements TAnnotatedElement {
} }
declaredConstructors = Arrays.copyOf(declaredConstructors, count); declaredConstructors = Arrays.copyOf(declaredConstructors, count);
} }
return declaredConstructors; return declaredConstructors.clone();
} }
public TConstructor<?>[] getConstructors() throws TSecurityException { public TConstructor<?>[] getConstructors() throws TSecurityException {
@ -325,6 +338,143 @@ public class TClass<T> extends TObject implements TAnnotatedElement {
} }
} }
public TMethod[] getDeclaredMethods() {
if (isPrimitive() || isArray()) {
return new TMethod[0];
}
if (declaredMethods == null) {
initReflection();
JSClass jsClass = (JSClass) getPlatformClass().getMetadata();
JSArray<JSMethodMember> jsMethods = jsClass.getMethods();
declaredMethods = new TMethod[jsMethods.getLength()];
int count = 0;
for (int i = 0; i < jsMethods.getLength(); ++i) {
JSMethodMember jsMethod = jsMethods.get(i);
if (jsMethod.getName().equals("<init>") || jsMethod.getName().equals("<clinit>")) {
continue;
}
PlatformSequence<PlatformClass> jsParameterTypes = jsMethod.getParameterTypes();
TClass<?>[] parameterTypes = new TClass<?>[jsParameterTypes.getLength()];
for (int j = 0; j < parameterTypes.length; ++j) {
parameterTypes[j] = getClass(jsParameterTypes.get(j));
}
TClass<?> returnType = getClass(jsMethod.getReturnType());
declaredMethods[count++] = new TMethod(this, jsMethod.getName(), jsMethod.getModifiers(),
jsMethod.getAccessLevel(), returnType, parameterTypes, jsMethod.getCallable());
}
declaredMethods = Arrays.copyOf(declaredMethods, count);
}
return declaredMethods.clone();
}
public TMethod getDeclaredMethod(String name, TClass<?>... parameterTypes) throws TNoSuchMethodException,
TSecurityException {
TMethod bestFit = null;
for (TMethod method : getDeclaredMethods()) {
if (method.getName().equals(name) && Arrays.equals(method.getParameterTypes(), parameterTypes)) {
if (bestFit == null || bestFit.getReturnType().isAssignableFrom(method.getReturnType())) {
bestFit = method;
}
}
}
if (bestFit == null) {
throw new TNoSuchMethodException();
}
return bestFit;
}
public TMethod[] getMethods() throws TSecurityException {
Map<MethodSignature, TMethod> methods = new HashMap<>();
findMethods(this, methods);
return methods.values().toArray(new TMethod[methods.size()]);
}
public TMethod getMethod(String name, TClass<?>... parameterTypes) throws TNoSuchMethodException,
TSecurityException {
TMethod method = findMethod(this, null, name, parameterTypes);
if (method == null) {
throw new TNoSuchMethodException();
}
return method;
}
private static void findMethods(TClass<?> cls, Map<MethodSignature, TMethod> methods) {
for (TMethod method : cls.getDeclaredMethods()) {
if (TModifier.isPublic(method.getModifiers())) {
MethodSignature signature = new MethodSignature(method.getName(), method.getParameterTypes(),
method.getReturnType());
if (!methods.containsKey(signature)) {
methods.put(signature, method);
}
}
}
if (!cls.isInterface()) {
TClass<?> superclass = cls.getSuperclass();
if (superclass != null) {
findMethods(superclass, methods);
}
}
for (TClass<?> iface : cls.getInterfaces()) {
findMethods(iface, methods);
}
}
private static TMethod findMethod(TClass<?> cls, TMethod current, String name, TClass<?>[] parameterTypes) {
for (TMethod method : cls.getDeclaredMethods()) {
if (TModifier.isPublic(method.getModifiers()) && method.getName().equals(name)
&& Arrays.equals(method.getParameterTypes(), parameterTypes)) {
if (current == null || current.getReturnType().isAssignableFrom(method.getReturnType())) {
current = method;
}
}
}
if (!cls.isInterface()) {
TClass<?> superclass = cls.getSuperclass();
if (superclass != null) {
current = findMethod(superclass, current, name, parameterTypes);
}
}
for (TClass<?> iface : cls.getInterfaces()) {
current = findMethod(iface, current, name, parameterTypes);
}
return current;
}
private static final class MethodSignature {
private final String name;
private final TClass<?>[] parameterTypes;
private final TClass<?> returnType;
MethodSignature(String name, TClass<?>[] parameterTypes, TClass<?> returnType) {
this.name = name;
this.parameterTypes = parameterTypes;
this.returnType = returnType;
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (!(o instanceof MethodSignature)) {
return false;
}
MethodSignature that = (MethodSignature) o;
return Objects.equals(name, that.name) && Arrays.equals(parameterTypes, that.parameterTypes)
&& Objects.equals(returnType, that.returnType);
}
@Override
public int hashCode() {
return Objects.hash(name, Arrays.hashCode(parameterTypes), returnType);
}
}
public int getModifiers() { public int getModifiers() {
int flags = platformClass.getMetadata().getFlags(); int flags = platformClass.getMetadata().getFlags();
int accessLevel = platformClass.getMetadata().getAccessLevel(); int accessLevel = platformClass.getMetadata().getAccessLevel();
@ -336,11 +486,13 @@ public class TClass<T> extends TObject implements TAnnotatedElement {
} }
@SuppressWarnings("unchecked") @SuppressWarnings("unchecked")
@PluggableDependency(ClassGenerator.class)
public TClass<? super T> getSuperclass() { public TClass<? super T> getSuperclass() {
return (TClass<? super T>) getClass(platformClass.getMetadata().getSuperclass()); return (TClass<? super T>) getClass(platformClass.getMetadata().getSuperclass());
} }
@SuppressWarnings("unchecked") @SuppressWarnings("unchecked")
@PluggableDependency(ClassGenerator.class)
public TClass<? super T>[] getInterfaces() { public TClass<? super T>[] getInterfaces() {
PlatformSequence<PlatformClass> supertypes = platformClass.getMetadata().getSupertypes(); PlatformSequence<PlatformClass> supertypes = platformClass.getMetadata().getSupertypes();

View File

@ -0,0 +1,141 @@
/*
* Copyright 2016 Alexey Andreev.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the 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.
*/
package org.teavm.classlib.java.lang.reflect;
import org.teavm.classlib.impl.reflection.Converter;
import org.teavm.classlib.impl.reflection.Flags;
import org.teavm.classlib.impl.reflection.JSCallable;
import org.teavm.classlib.java.lang.TClass;
import org.teavm.classlib.java.lang.TIllegalAccessException;
import org.teavm.classlib.java.lang.TIllegalArgumentException;
import org.teavm.classlib.java.lang.TObject;
import org.teavm.platform.Platform;
import org.teavm.platform.PlatformObject;
import org.teavm.platform.PlatformSequence;
public class TMethod extends TAccessibleObject implements TMember {
private TClass<?> declaringClass;
private String name;
private int flags;
private int accessLevel;
private TClass<?> returnType;
private TClass<?>[] parameterTypes;
private JSCallable callable;
public TMethod(TClass<?> declaringClass, String name, int flags, int accessLevel, TClass<?> returnType,
TClass<?>[] parameterTypes, JSCallable callable) {
this.declaringClass = declaringClass;
this.name = name;
this.flags = flags;
this.accessLevel = accessLevel;
this.returnType = returnType;
this.parameterTypes = parameterTypes;
this.callable = callable;
}
@Override
public TClass<?> getDeclaringClass() {
return declaringClass;
}
@Override
public String getName() {
return name;
}
@Override
public int getModifiers() {
return Flags.getModifiers(flags, accessLevel);
}
public TClass<?> getReturnType() {
return returnType;
}
public TClass<?>[] getParameterTypes() {
return parameterTypes.clone();
}
public int getParameterCount() {
return parameterTypes.length;
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append(TModifier.toString(getModifiers()));
if (sb.length() > 0) {
sb.append(' ');
}
sb.append(returnType.getName()).append(' ').append(declaringClass.getName()).append('.')
.append(name).append('(');
if (parameterTypes.length > 0) {
sb.append(parameterTypes[0].getName());
for (int i = 1; i < parameterTypes.length; ++i) {
sb.append(',').append(parameterTypes[i].getName());
}
}
sb.append(')');
return sb.toString();
}
public Object invoke(Object obj, Object... args) throws TIllegalAccessException, TIllegalArgumentException,
TInvocationTargetException {
if (callable == null) {
throw new TIllegalAccessException();
}
if (args.length != parameterTypes.length) {
throw new TIllegalArgumentException();
}
if ((flags & Flags.STATIC) == 0) {
if (!declaringClass.isInstance((TObject) obj)) {
throw new TIllegalArgumentException();
}
} else {
Platform.initClass(declaringClass.getPlatformClass());
}
for (int i = 0; i < args.length; ++i) {
if (!parameterTypes[i].isPrimitive() && args[i] != null
&& !parameterTypes[i].isInstance((TObject) args[i])) {
throw new TIllegalArgumentException();
}
if (parameterTypes[i].isPrimitive() && args[i] == null) {
throw new TIllegalArgumentException();
}
}
PlatformSequence<PlatformObject> jsArgs = Converter.arrayFromJava(args);
PlatformObject result = callable.call(Platform.getPlatformObject(obj), jsArgs);
return Converter.toJava(result);
}
public boolean isBridge() {
return (flags & Flags.BRIDGE) != 0;
}
@Override
public boolean isSynthetic() {
return (flags & Flags.SYNTHETIC) != 0;
}
public boolean isVarArgs() {
return (flags & Flags.VARARGS) != 0;
}
}

View File

@ -74,8 +74,8 @@ public class ConstructorTest {
InstantiationException { InstantiationException {
Constructor<ReflectableType> constructor = ReflectableType.class.getDeclaredConstructor(); Constructor<ReflectableType> constructor = ReflectableType.class.getDeclaredConstructor();
ReflectableType instance = constructor.newInstance(); ReflectableType instance = constructor.newInstance();
assertEquals(0, instance.a); assertEquals(0, instance.getA());
assertNull(instance.b); assertNull(instance.getB());
} }
@Test @Test
@ -84,8 +84,8 @@ public class ConstructorTest {
Constructor<ReflectableType> constructor = ReflectableType.class Constructor<ReflectableType> constructor = ReflectableType.class
.getDeclaredConstructor(int.class, Object.class); .getDeclaredConstructor(int.class, Object.class);
ReflectableType instance = constructor.newInstance(23, "42"); ReflectableType instance = constructor.newInstance(23, "42");
assertEquals(23, instance.a); assertEquals(23, instance.getA());
assertEquals("42", instance.b); assertEquals("42", instance.getB());
} }
static class ReflectableType { static class ReflectableType {
@ -107,5 +107,13 @@ public class ConstructorTest {
this.a = a; this.a = a;
this.b = b; this.b = b;
} }
public int getA() {
return a;
}
public Object getB() {
return b;
}
} }
} }

View File

@ -0,0 +1,169 @@
/*
* Copyright 2016 Alexey Andreev.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the 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.
*/
package org.teavm.classlib.java.lang.reflect;
import static org.junit.Assert.assertEquals;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.teavm.classlib.support.Reflectable;
import org.teavm.junit.TeaVMTestRunner;
@RunWith(TeaVMTestRunner.class)
public class MethodTest {
@Test
public void methodsEnumerated() {
callMethods();
String text = collectMethods(Foo.class.getDeclaredMethods());
assertEquals(""
+ "java.lang.Object Foo.baz();"
+ "public void Foo.bar(java.lang.Object);",
text);
}
@Test
public void publicMethodsEnumerated() {
callMethods();
String text = collectMethods(Foo.class.getMethods());
assertEquals("public void Foo.bar(java.lang.Object);", text);
}
@Test
public void inheritedPublicMethodEnumerated() {
callMethods();
String text = collectMethods(SubClass.class.getMethods());
assertEquals("public void SubClass.g();public void SuperClass.f();", text);
}
@Test
public void bridgeMethodNotFound() throws NoSuchMethodException {
callMethods();
Method method = SubClassWithBridge.class.getMethod("f");
assertEquals(String.class, method.getReturnType());
}
@Test
public void methodInvoked() throws NoSuchMethodException, InvocationTargetException, IllegalAccessException {
Foo foo = new Foo();
Method method = foo.getClass().getMethod("bar", Object.class);
method.invoke(foo, "23");
assertEquals("23", foo.baz());
}
@Test
public void methodInvoked2() throws NoSuchMethodException, InvocationTargetException, IllegalAccessException {
Foo foo = new Foo();
foo.bar("42");
Method method = foo.getClass().getDeclaredMethod("baz");
assertEquals("42", method.invoke(foo));
}
@Test
public void staticInitializerCalled() throws NoSuchMethodException, InvocationTargetException,
IllegalAccessException {
Method method = WithInitializer.class.getMethod("f");
method.invoke(null);
assertEquals("init;f();", WithInitializer.log);
}
private void callMethods() {
new Foo().bar(null);
new Foo().baz();
new SuperClass().f();
new SubClass().g();
new SuperClassWithBridge().f();
new SubClassWithBridge().f();
}
private String collectMethods(Method[] methods) {
List<String> lines = new ArrayList<>();
for (Method method : methods) {
if (!method.getDeclaringClass().equals(Object.class)) {
lines.add(method + ";");
}
}
StringBuilder sb = new StringBuilder();
Collections.sort(lines);
for (String line : lines) {
sb.append(line);
}
return sb.toString().replace("org.teavm.classlib.java.lang.reflect.MethodTest$", "");
}
static class Foo {
Object value;
@Reflectable
public void bar(Object value) {
this.value = value;
}
@Reflectable
Object baz() {
return value;
}
}
static class SuperClass {
@Reflectable
public void f() {
}
}
static class SubClass extends SuperClass {
@Reflectable
public void g() {
}
}
static class SuperClassWithBridge {
@Reflectable
public Object f() {
return null;
}
}
static class SubClassWithBridge {
@Reflectable
public String f() {
return null;
}
}
static class WithInitializer {
static String log = "";
static {
log += "init;";
}
@Reflectable public static void f() {
log += "f();";
}
}
}