Mercurial > hg > graal-compiler
view graal/com.oracle.truffle.ruby.nodes/src/com/oracle/truffle/ruby/nodes/constants/UninitializedReadConstantNode.java @ 13745:978587c91373
Merge
author | Tom Rodriguez <tom.rodriguez@oracle.com> |
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date | Thu, 23 Jan 2014 16:35:57 -0800 |
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.constants; import com.oracle.truffle.api.*; import com.oracle.truffle.api.frame.*; import com.oracle.truffle.api.nodes.*; import com.oracle.truffle.ruby.nodes.*; import com.oracle.truffle.ruby.runtime.*; import com.oracle.truffle.ruby.runtime.control.*; import com.oracle.truffle.ruby.runtime.core.*; import com.oracle.truffle.ruby.runtime.objects.*; /** * Represents an uninitialized constant read from some object. After the first read it will be * specialized to some other node. This is the starting point for all constant reads. */ @NodeInfo(shortName = "uninitialized-read-constant") public class UninitializedReadConstantNode extends ReadConstantNode { public UninitializedReadConstantNode(RubyContext context, SourceSection sourceSection, String name, RubyNode receiver) { super(context, sourceSection, name, receiver); } /** * This execute method allows us to pass in the already executed receiver object, so that during * uninitialization it is not executed once by the specialized node and again by this node. */ public Object execute(RubyBasicObject receiverObject) { CompilerAsserts.neverPartOfCompilation(); final RubyContext context = receiverObject.getRubyClass().getContext(); Object value; value = receiverObject.getLookupNode().lookupConstant(name); if (value == null && receiverObject instanceof RubyModule) { /* * FIXME(CS): I'm obviously doing something wrong with constant lookup in nested modules * here, but explicitly looking in the Module itself, not its lookup node, seems to fix * it for now. */ value = ((RubyModule) receiverObject).lookupConstant(name); } if (value == null) { throw new RaiseException(context.getCoreLibrary().nameErrorUninitializedConstant(name)); } replace(new CachedReadConstantNode(context, getSourceSection(), name, receiver, receiverObject.getRubyClass(), value)); assert RubyContext.shouldObjectBeVisible(value); return value; } @Override public Object execute(VirtualFrame frame) { CompilerDirectives.transferToInterpreter(); final RubyContext context = getContext(); final Object receiverObject = receiver.execute(frame); final RubyBasicObject receiverRubyObject = context.getCoreLibrary().box(receiverObject); return execute(receiverRubyObject); } }