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The Qbicc builder for the java.base JDK module
/*
* Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package jdk.internal.reflect;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import jdk.internal.misc.Unsafe;
/** Base class for jdk.internal.misc.Unsafe-based FieldAccessors. The
observation is that there are only nine types of fields from the
standpoint of reflection code: the eight primitive types and
Object. Using class Unsafe instead of generated bytecodes saves
memory and loading time for the dynamically-generated
FieldAccessors. */
abstract class UnsafeFieldAccessorImpl extends FieldAccessorImpl {
static final Unsafe unsafe = Unsafe.getUnsafe();
protected final Field field;
protected final long fieldOffset;
protected final boolean isFinal;
UnsafeFieldAccessorImpl(Field field) {
this.field = field;
if (Modifier.isStatic(field.getModifiers()))
fieldOffset = unsafe.staticFieldOffset(field);
else
fieldOffset = unsafe.objectFieldOffset(field);
isFinal = Modifier.isFinal(field.getModifiers());
}
protected void ensureObj(Object o) {
// NOTE: will throw NullPointerException, as specified, if o is null
if (!field.getDeclaringClass().isAssignableFrom(o.getClass())) {
throwSetIllegalArgumentException(o);
}
}
private String getQualifiedFieldName() {
return field.getDeclaringClass().getName() + "." +field.getName();
}
protected IllegalArgumentException newGetIllegalArgumentException(String type) {
return new IllegalArgumentException(
"Attempt to get "+field.getType().getName()+" field \"" +
getQualifiedFieldName() + "\" with illegal data type conversion to "+type
);
}
protected void throwFinalFieldIllegalAccessException(String attemptedType,
String attemptedValue)
throws IllegalAccessException {
throw new IllegalAccessException(getSetMessage(attemptedType, attemptedValue));
}
protected void throwFinalFieldIllegalAccessException(Object o) throws IllegalAccessException {
throwFinalFieldIllegalAccessException(o != null ? o.getClass().getName() : "", "");
}
protected void throwFinalFieldIllegalAccessException(boolean z) throws IllegalAccessException {
throwFinalFieldIllegalAccessException("boolean", Boolean.toString(z));
}
protected void throwFinalFieldIllegalAccessException(char b) throws IllegalAccessException {
throwFinalFieldIllegalAccessException("char", Character.toString(b));
}
protected void throwFinalFieldIllegalAccessException(byte b) throws IllegalAccessException {
throwFinalFieldIllegalAccessException("byte", Byte.toString(b));
}
protected void throwFinalFieldIllegalAccessException(short b) throws IllegalAccessException {
throwFinalFieldIllegalAccessException("short", Short.toString(b));
}
protected void throwFinalFieldIllegalAccessException(int i) throws IllegalAccessException {
throwFinalFieldIllegalAccessException("int", Integer.toString(i));
}
protected void throwFinalFieldIllegalAccessException(long i) throws IllegalAccessException {
throwFinalFieldIllegalAccessException("long", Long.toString(i));
}
protected void throwFinalFieldIllegalAccessException(float f) throws IllegalAccessException {
throwFinalFieldIllegalAccessException("float", Float.toString(f));
}
protected void throwFinalFieldIllegalAccessException(double f) throws IllegalAccessException {
throwFinalFieldIllegalAccessException("double", Double.toString(f));
}
protected IllegalArgumentException newGetBooleanIllegalArgumentException() {
return newGetIllegalArgumentException("boolean");
}
protected IllegalArgumentException newGetByteIllegalArgumentException() {
return newGetIllegalArgumentException("byte");
}
protected IllegalArgumentException newGetCharIllegalArgumentException() {
return newGetIllegalArgumentException("char");
}
protected IllegalArgumentException newGetShortIllegalArgumentException() {
return newGetIllegalArgumentException("short");
}
protected IllegalArgumentException newGetIntIllegalArgumentException() {
return newGetIllegalArgumentException("int");
}
protected IllegalArgumentException newGetLongIllegalArgumentException() {
return newGetIllegalArgumentException("long");
}
protected IllegalArgumentException newGetFloatIllegalArgumentException() {
return newGetIllegalArgumentException("float");
}
protected IllegalArgumentException newGetDoubleIllegalArgumentException() {
return newGetIllegalArgumentException("double");
}
protected String getSetMessage(String attemptedType, String attemptedValue) {
String err = "Can not set";
if (Modifier.isStatic(field.getModifiers()))
err += " static";
if (isFinal)
err += " final";
err += " " + field.getType().getName() + " field " + getQualifiedFieldName() + " to ";
if (!attemptedValue.isEmpty()) {
err += "(" + attemptedType + ")" + attemptedValue;
} else {
if (!attemptedType.isEmpty())
err += attemptedType;
else
err += "null value";
}
return err;
}
protected void throwSetIllegalArgumentException(String attemptedType,
String attemptedValue) {
throw new IllegalArgumentException(getSetMessage(attemptedType,attemptedValue));
}
protected void throwSetIllegalArgumentException(Object o) {
throwSetIllegalArgumentException(o != null ? o.getClass().getName() : "", "");
}
protected void throwSetIllegalArgumentException(boolean b) {
throwSetIllegalArgumentException("boolean", Boolean.toString(b));
}
protected void throwSetIllegalArgumentException(byte b) {
throwSetIllegalArgumentException("byte", Byte.toString(b));
}
protected void throwSetIllegalArgumentException(char c) {
throwSetIllegalArgumentException("char", Character.toString(c));
}
protected void throwSetIllegalArgumentException(short s) {
throwSetIllegalArgumentException("short", Short.toString(s));
}
protected void throwSetIllegalArgumentException(int i) {
throwSetIllegalArgumentException("int", Integer.toString(i));
}
protected void throwSetIllegalArgumentException(long l) {
throwSetIllegalArgumentException("long", Long.toString(l));
}
protected void throwSetIllegalArgumentException(float f) {
throwSetIllegalArgumentException("float", Float.toString(f));
}
protected void throwSetIllegalArgumentException(double d) {
throwSetIllegalArgumentException("double", Double.toString(d));
}
}