/*
* Copyright (c) 2020, 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.
*
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package org.graalvm.compiler.hotspot;
import java.util.Objects;
import jdk.vm.ci.meta.JavaConstant;
import jdk.vm.ci.meta.JavaKind;
import jdk.vm.ci.meta.ResolvedJavaType;
public class SnippetObjectConstant implements JavaConstant {
protected final Object object;
public SnippetObjectConstant(Object object) {
this.object = object;
}
@Override
public JavaKind getJavaKind() {
return JavaKind.Object;
}
@Override
public boolean equals(Object o) {
if (o == this) {
return true;
} else if (o instanceof SnippetObjectConstant) {
SnippetObjectConstant other = (SnippetObjectConstant) o;
return object == other.object;
}
return false;
}
@Override
public int hashCode() {
return System.identityHashCode(object);
}
Gets the object represented by this constant if it is of the given type.
Params: - type – the expected type of the object represented by this constant. If the object is required to be of this type, then wrap the call to this method in
Objects.requireNonNull(Object)
.
Returns: the object value represented by this constant if it is an instance of
type
otherwise null
/**
* Gets the object represented by this constant if it is of the given type.
*
* @param type the expected type of the object represented by this constant. If the object is
* required to be of this type, then wrap the call to this method in
* {@link Objects#requireNonNull(Object)}.
* @return the object value represented by this constant if it is an
* {@link ResolvedJavaType#isInstance(JavaConstant) instance of} {@code type} otherwise
* {@code null}
*/
@SuppressWarnings("unchecked")
public <T> T asObject(Class<T> type) {
if (type.isInstance(object)) {
return type.cast(object);
}
return null;
}
@Override
public String toString() {
return "SnippetObjectConstant{" +
"object=" + object +
'}';
}
@Override
public String toValueString() {
return JavaKind.Object.format(object);
}
@Override
public boolean isNull() {
return false;
}
@Override
public boolean isDefaultForKind() {
return false;
}
@Override
public Object asBoxedPrimitive() {
throw new IllegalArgumentException();
}
@Override
public int asInt() {
throw new IllegalArgumentException();
}
@Override
public boolean asBoolean() {
throw new IllegalArgumentException();
}
@Override
public long asLong() {
throw new IllegalArgumentException();
}
@Override
public float asFloat() {
throw new IllegalArgumentException();
}
@Override
public double asDouble() {
throw new IllegalArgumentException();
}
}