Mercurial > hg > graal-compiler
view graal/com.oracle.truffle.ruby.nodes/src/com/oracle/truffle/ruby/nodes/methods/arguments/ReadPreArgumentNode.java @ 13514:0fbee3eb71f0
Ruby: import project.
author | Chris Seaton <chris.seaton@oracle.com> |
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date | Mon, 06 Jan 2014 17:12:09 +0000 |
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/* * Copyright (c) 2013 Oracle and/or its affiliates. All rights reserved. This * code is released under a tri EPL/GPL/LGPL license. You can use it, * redistribute it and/or modify it under the terms of the: * * Eclipse Public License version 1.0 * GNU General Public License version 2 * GNU Lesser General Public License version 2.1 */ package com.oracle.truffle.ruby.nodes.methods.arguments; import com.oracle.truffle.api.*; import com.oracle.truffle.api.frame.*; import com.oracle.truffle.api.nodes.*; import com.oracle.truffle.api.utilities.*; import com.oracle.truffle.ruby.nodes.*; import com.oracle.truffle.ruby.runtime.*; /** * Read pre-optional argument. */ @NodeInfo(shortName = "read-pre-optional-argument") public class ReadPreArgumentNode extends RubyNode { private final int index; private final boolean undefinedIfNotPresent; private final BranchProfile notPresentProfile = new BranchProfile(); public ReadPreArgumentNode(RubyContext context, SourceSection sourceSection, int index, boolean undefinedIfNotPresent) { super(context, sourceSection); this.index = index; this.undefinedIfNotPresent = undefinedIfNotPresent; } @Override public Object execute(VirtualFrame frame) { final Object[] arguments = frame.getArguments(RubyArguments.class).getArguments(); if (undefinedIfNotPresent) { if (index >= arguments.length) { notPresentProfile.enter(); return UndefinedPlaceholder.INSTANCE; } } else { assert index < arguments.length; } return arguments[index]; } }