org.robovm.rt.annotation.Annotation Maven / Gradle / Ivy
/*
* Copyright (C) 2014 RoboVM AB
*
* 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.robovm.rt.annotation;
import java.lang.annotation.AnnotationTypeMismatchException;
import java.lang.annotation.IncompleteAnnotationException;
import java.util.Arrays;
import java.util.HashMap;
/**
* Abstract base class of annotation implementation classes generated by the
* compiler {@code AnnotationImplPlugin}.
*/
public abstract class Annotation implements java.lang.annotation.Annotation {
private enum NoValue {NO_VALUE}
/**
* Singleton representing missing element value.
*/
protected static final Object NO_VALUE = NoValue.NO_VALUE;
private static HashMap, HashMap>
defaultValueCache = new HashMap<>();
private final Class annotationType;
protected Annotation(Class klass) {
this.annotationType = klass;
}
@Override
public Class annotationType() {
return annotationType;
}
protected final Object validate(Object value, String memberName) {
if (value instanceof Exception) {
if (value instanceof TypeNotPresentException) {
TypeNotPresentException e = (TypeNotPresentException) value;
throw new TypeNotPresentException(e.typeName(), e.getCause());
} else if (value instanceof EnumConstantNotPresentException) {
EnumConstantNotPresentException e = (EnumConstantNotPresentException) value;
throw new EnumConstantNotPresentException(e.enumType(), e.constantName());
} else if (value instanceof AnnotationTypeMismatchException) {
AnnotationTypeMismatchException e = (AnnotationTypeMismatchException) value;
throw new AnnotationTypeMismatchException(e.element(), e.foundType());
} else if (value instanceof ArrayStoreException) {
ArrayStoreException e = (ArrayStoreException) value;
throw new ArrayStoreException(e.getMessage());
} else {
// Unknown exception. Wrap and rethrow.
throw new RuntimeException((Exception) value);
}
}
if (value == NO_VALUE) {
throw new IncompleteAnnotationException(annotationType, memberName);
}
Class type = value.getClass();
if (type.isArray()) {
if (type == int[].class) {
return ((int[]) value).clone();
} else if (type == byte[].class) {
return ((byte[]) value).clone();
} else if (type == short[].class) {
return ((short[]) value).clone();
} else if (type == long[].class) {
return ((long[]) value).clone();
} else if (type == char[].class) {
return ((char[]) value).clone();
} else if (type == boolean[].class) {
return ((boolean[]) value).clone();
} else if (type == float[].class) {
return ((float[]) value).clone();
} else if (type == double[].class) {
return ((double[]) value).clone();
}
return ((Object[]) value).clone();
}
return value;
}
protected final Object getDefaultValue(String memberName) {
synchronized (defaultValueCache) {
HashMap cache = defaultValueCache.get(annotationType);
if (cache != null) {
Object value = cache.get(memberName);
if (value != null) {
return value;
}
}
Object value = null;
try {
value = annotationType.getMethod(memberName).getDefaultValue();
} catch (Throwable t) {
value = t;
}
if (value == null) {
value = NO_VALUE;
}
if (cache == null) {
cache = new HashMap();
defaultValueCache.put(annotationType, cache);
}
cache.put(memberName, value);
return value;
}
}
protected final int hash(Object value, String memberName) {
int hash = memberName.hashCode() * 127;
Class type = value.getClass();
if (type.isArray()) {
if (type == int[].class) {
return hash ^ Arrays.hashCode((int[]) value);
} else if (type == byte[].class) {
return hash ^ Arrays.hashCode((byte[]) value);
} else if (type == short[].class) {
return hash ^ Arrays.hashCode((short[]) value);
} else if (type == long[].class) {
return hash ^ Arrays.hashCode((long[]) value);
} else if (type == char[].class) {
return hash ^ Arrays.hashCode((char[]) value);
} else if (type == boolean[].class) {
return hash ^ Arrays.hashCode((boolean[]) value);
} else if (type == float[].class) {
return hash ^ Arrays.hashCode((float[]) value);
} else if (type == double[].class) {
return hash ^ Arrays.hashCode((double[]) value);
}
return hash ^ Arrays.hashCode((Object[]) value);
} else {
return hash ^ value.hashCode();
}
}
@Override
public final boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null) {
return false;
}
if (this.getClass() == o.getClass()) {
return fastEquals(o);
}
if (annotationType.isInstance(o)) {
try {
return slowEquals(o);
} catch (Throwable t) {
return false;
}
}
return false;
}
protected abstract boolean fastEquals(Object that);
protected abstract boolean slowEquals(Object that);
protected final boolean memberEquals(Object ours, Object theirs) {
if (ours == theirs) {
return true;
}
if (ours instanceof Exception) {
return false;
}
Class type = ours.getClass();
if (type != theirs.getClass()) {
return false;
}
if (type.isArray()) {
if (ours instanceof Object[]) {
return Arrays.equals((Object[]) ours, (Object[]) theirs);
} else if (type == int[].class) {
return Arrays.equals((int[]) ours, (int[]) theirs);
} else if (type == byte[].class) {
return Arrays.equals((byte[]) ours, (byte[]) theirs);
} else if (type == short[].class) {
return Arrays.equals((short[]) ours, (short[]) theirs);
} else if (type == long[].class) {
return Arrays.equals((long[]) ours, (long[]) theirs);
} else if (type == char[].class) {
return Arrays.equals((char[]) ours, (char[]) theirs);
} else if (type == boolean[].class) {
return Arrays.equals((boolean[]) ours, (boolean[]) theirs);
} else if (type == float[].class) {
return Arrays.equals((float[]) ours, (float[]) theirs);
} else if (type == double[].class) {
return Arrays.equals((double[]) ours, (double[]) theirs);
}
return false;
} else {
return ours.equals(theirs);
}
}
@Override
public final String toString() {
StringBuilder sb = new StringBuilder(128);
sb.append('@');
sb.append(annotationType.getName());
sb.append('(');
membersToString(sb);
sb.append(')');
return sb.toString();
}
protected abstract void membersToString(StringBuilder sb);
protected final void memberToString(StringBuilder sb, Object value, String memberName, boolean first) {
if (!first) {
sb.append(", ");
}
sb.append(memberName);
sb.append('=');
sb.append(memberValueToString(value));
}
private final String memberValueToString(Object value) {
Class type = value.getClass();
if (type.isArray()) {
if (type == int[].class) {
return Arrays.toString((int[]) value);
} else if (type == byte[].class) {
return Arrays.toString((byte[]) value);
} else if (type == short[].class) {
return Arrays.toString((short[]) value);
} else if (type == long[].class) {
return Arrays.toString((long[]) value);
} else if (type == char[].class) {
return Arrays.toString((char[]) value);
} else if (type == boolean[].class) {
return Arrays.toString((boolean[]) value);
} else if (type == float[].class) {
return Arrays.toString((float[]) value);
} else if (type == double[].class) {
return Arrays.toString((double[]) value);
}
return Arrays.toString((Object[]) value);
}
return value.toString();
}
protected static Boolean box(boolean v) {
return Boolean.valueOf(v);
}
protected static Byte box(byte v) {
return Byte.valueOf(v);
}
protected static Short box(short v) {
return Short.valueOf(v);
}
protected static Character box(char v) {
return Character.valueOf(v);
}
protected static Integer box(int v) {
return Integer.valueOf(v);
}
protected static Long box(long v) {
return Long.valueOf(v);
}
protected static Float box(float v) {
return Float.valueOf(v);
}
protected static Double box(double v) {
return Double.valueOf(v);
}
protected static boolean unbox(Boolean v) {
return v.booleanValue();
}
protected static byte unbox(Byte v) {
return v.byteValue();
}
protected static short unbox(Short v) {
return v.shortValue();
}
protected static char unbox(Character v) {
return v.charValue();
}
protected static int unbox(Integer v) {
return v.intValue();
}
protected static long unbox(Long v) {
return v.longValue();
}
protected static float unbox(Float v) {
return v.floatValue();
}
protected static double unbox(Double v) {
return v.doubleValue();
}
}
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