Mercurial > hg > graal-compiler
view graal/com.oracle.truffle.ruby.nodes/src/com/oracle/truffle/ruby/nodes/methods/arguments/ReadOptionalArgumentNode.java @ 13529:856c2c294f84
Merge.
author | Christian Humer <christian.humer@gmail.com> |
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date | Tue, 07 Jan 2014 18:53:04 +0100 |
parents | 0fbee3eb71f0 |
children |
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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 an optional argument. */ @NodeInfo(shortName = "read-optional-argument") public class ReadOptionalArgumentNode extends RubyNode { private final int index; private final int minimum; @Child protected RubyNode defaultValue; private final BranchProfile defaultValueProfile = new BranchProfile(); public ReadOptionalArgumentNode(RubyContext context, SourceSection sourceSection, int index, int minimum, RubyNode defaultValue) { super(context, sourceSection); this.index = index; this.minimum = minimum; this.defaultValue = adoptChild(defaultValue); } @Override public Object execute(VirtualFrame frame) { final Object[] arguments = frame.getArguments(RubyArguments.class).getArguments(); if (arguments.length < minimum) { defaultValueProfile.enter(); return defaultValue.execute(frame); } else { assert index < arguments.length; return arguments[index]; } } }