Mercurial > hg > graal-compiler
diff graal/com.oracle.jvmci.meta/src/com/oracle/jvmci/meta/AbstractValue.java @ 21556:48c1ebd24120
renamed com.oracle.graal.api[meta|code] modules to com.oracle.jvmci.[meta|code] (JBS:GRAAL-53)
author | Doug Simon <doug.simon@oracle.com> |
---|---|
date | Wed, 27 May 2015 00:36:16 +0200 |
parents | graal/com.oracle.graal.api.meta/src/com/oracle/graal/api/meta/AbstractValue.java@082417ac43e4 |
children | 26774dc3a5e7 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graal/com.oracle.jvmci.meta/src/com/oracle/jvmci/meta/AbstractValue.java Wed May 27 00:36:16 2015 +0200 @@ -0,0 +1,99 @@ +/* + * Copyright (c) 2009, 2014, 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. + * + * 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 com.oracle.jvmci.meta; + +/** + * Abstract base class for values. + */ +public abstract class AbstractValue implements Value, KindProvider { + + public static final AllocatableValue ILLEGAL = Value.ILLEGAL; + + private final Kind kind; + private final LIRKind lirKind; + + /** + * Initializes a new value of the specified kind. + * + * @param lirKind the kind + */ + protected AbstractValue(LIRKind lirKind) { + this.lirKind = lirKind; + if (getPlatformKind() instanceof Kind) { + this.kind = (Kind) getPlatformKind(); + } else { + this.kind = Kind.Illegal; + } + } + + /** + * Returns a String representation of the kind, which should be the end of all + * {@link #toString()} implementation of subclasses. + */ + protected final String getKindSuffix() { + return "|" + getKind().getTypeChar(); + } + + /** + * Returns the kind of this value. + */ + public final Kind getKind() { + return kind; + } + + public final LIRKind getLIRKind() { + return lirKind; + } + + /** + * Returns the platform specific kind used to store this value. + */ + public final PlatformKind getPlatformKind() { + return lirKind.getPlatformKind(); + } + + @Override + public int hashCode() { + return 41 + lirKind.hashCode(); + } + + @Override + public boolean equals(Object obj) { + if (obj instanceof AbstractValue) { + AbstractValue that = (AbstractValue) obj; + return kind.equals(that.kind) && lirKind.equals(that.lirKind); + } + return false; + } + + /** + * Checks if this value is identical to {@code other}. + * + * Warning: Use with caution! Usually equivalence {@link #equals(Object)} is sufficient and + * should be used. + */ + @ExcludeFromIdentityComparisonVerification + public final boolean identityEquals(AbstractValue other) { + return this == other; + } +}