Mercurial > hg > graal-jvmci-8
diff graal/com.oracle.truffle.object/src/com/oracle/truffle/object/Transition.java @ 18408:2c3666f44855
Truffle: initial commit of object API implementation
author | Andreas Woess <andreas.woess@jku.at> |
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date | Tue, 18 Nov 2014 23:19:43 +0100 |
parents | |
children | b3b241bbbbdb |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graal/com.oracle.truffle.object/src/com/oracle/truffle/object/Transition.java Tue Nov 18 23:19:43 2014 +0100 @@ -0,0 +1,144 @@ +/* + * Copyright (c) 2013, 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.truffle.object; + +import java.util.*; + +import com.oracle.truffle.api.object.*; + +public abstract class Transition { + @Override + public int hashCode() { + int result = 1; + return result; + } + + @Override + public boolean equals(Object obj) { + if (this == obj) { + return true; + } + if (obj == null) { + return false; + } + if (getClass() != obj.getClass()) { + return false; + } + return true; + } + + public abstract static class PropertyTransition extends Transition { + private final Property property; + + public PropertyTransition(Property property) { + this.property = property; + } + + @Override + public int hashCode() { + final int prime = 31; + int result = super.hashCode(); + result = prime * result + ((property == null) ? 0 : property.hashCode()); + return result; + } + + @Override + public boolean equals(Object obj) { + if (!super.equals(obj)) { + return false; + } + PropertyTransition other = (PropertyTransition) obj; + if (!Objects.equals(property, other.property)) { + return false; + } + return true; + } + + public Property getProperty() { + return property; + } + } + + public static final class AddTransition extends PropertyTransition { + public AddTransition(Property property) { + super(property); + } + } + + public static final class RemoveTransition extends PropertyTransition { + public RemoveTransition(Property property) { + super(property); + } + } + + public static final class OperationsTransition extends Transition { + private final ObjectType operations; + + public OperationsTransition(ObjectType operations) { + this.operations = operations; + } + + public ObjectType getOperations() { + return operations; + } + + @Override + public boolean equals(Object other) { + return super.equals(other) && Objects.equals(operations, ((OperationsTransition) other).operations); + } + + @Override + public int hashCode() { + final int prime = 31; + int result = super.hashCode(); + result = prime * result + ((operations == null) ? 0 : operations.hashCode()); + return result; + } + } + + public static final class TypeTransition extends PropertyTransition { + private final Property after; + + public TypeTransition(Property before, Property after) { + super(before); + this.after = after; + } + + public Property getPropertyBefore() { + return this.getProperty(); + } + + public Property getPropertyAfter() { + return after; + } + } + + public static final class ReservePrimitiveArrayTransition extends Transition { + public ReservePrimitiveArrayTransition() { + } + } + + public String getShortName() { + return this.getClass().getSimpleName().replaceFirst("Transition$", "").toLowerCase(); + } +}