Mercurial > hg > graal-jvmci-8
diff graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/local/SLReadArgumentNode.java @ 13761:7c418666c6c9
Refactoring and cleanup of Simple Language (more to come soon)
author | Christian Wimmer <christian.wimmer@oracle.com> |
---|---|
date | Fri, 24 Jan 2014 18:16:24 -0800 |
parents | graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/ReadArgumentNode.java@d4c6dd07be76 |
children | b16ec83edc73 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/local/SLReadArgumentNode.java Fri Jan 24 18:16:24 2014 -0800 @@ -0,0 +1,50 @@ +/* + * Copyright (c) 2012, 2012, 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.local; + +import com.oracle.truffle.api.frame.*; +import com.oracle.truffle.api.utilities.*; +import com.oracle.truffle.sl.nodes.*; +import com.oracle.truffle.sl.runtime.*; + +public class SLReadArgumentNode extends SLExpressionNode { + + private final int index; + + private final BranchProfile outOfBounds = new BranchProfile(); + + public SLReadArgumentNode(int index) { + this.index = index; + } + + @Override + public Object executeGeneric(VirtualFrame frame) { + Object[] args = SLArguments.getFromFrame(frame); + if (index < args.length) { + return args[index]; + } else { + outOfBounds.enter(); + return SLNull.INSTANCE; + } + } +}