Mercurial > hg > graal-jvmci-8
view graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/access/SLWritePropertyNode.java @ 18411:dc2e000bed40
SL: add basic support for creating objects and accessing properties
author | Andreas Woess <andreas.woess@jku.at> |
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date | Tue, 18 Nov 2014 23:02:58 +0100 |
parents | |
children | 997bc9764a9a |
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/* * 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.sl.nodes.access; import java.util.*; import com.oracle.truffle.api.frame.*; import com.oracle.truffle.api.nodes.*; import com.oracle.truffle.api.source.*; import com.oracle.truffle.sl.*; import com.oracle.truffle.sl.nodes.*; /** * The node for setting a property of an object. When executed, this node first evaluates the value * expression on the right hand side of the equals operator, followed by the object expression on * the left side of the dot operator, and then sets the named property of this object to the new * value if the property already exists or adds a new property. Finally, it returns the new value. */ @NodeInfo(shortName = ".=") public final class SLWritePropertyNode extends SLExpressionNode { public static SLWritePropertyNode create(SourceSection src, SLExpressionNode receiverNode, String propertyName, SLExpressionNode valueNode) { return new SLWritePropertyNode(src, receiverNode, propertyName, valueNode); } @Child protected SLExpressionNode receiverNode; protected final String propertyName; @Child protected SLExpressionNode valueNode; private SLWritePropertyNode(SourceSection src, SLExpressionNode receiverNode, String propertyName, SLExpressionNode valueNode) { super(src); this.receiverNode = receiverNode; this.propertyName = propertyName; this.valueNode = valueNode; } @SuppressWarnings("unchecked") @Override public Object executeGeneric(VirtualFrame frame) { Object value = valueNode.executeGeneric(frame); Object object = receiverNode.executeGeneric(frame); if (object instanceof Map) { ((Map<Object, Object>) object).put(propertyName, value); } else { throw new SLException("unexpected receiver type"); } return value; } }