Mercurial > hg > graal-compiler
view graal/com.oracle.truffle.ruby.nodes/src/com/oracle/truffle/ruby/nodes/objects/DefineOrGetClassNode.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.objects; import com.oracle.truffle.api.*; import com.oracle.truffle.api.frame.*; 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.*; /** * Define a new class, or get the existing one of the same name. */ public class DefineOrGetClassNode extends RubyNode { private final String name; @Child protected RubyNode moduleDefinedIn; @Child protected RubyNode superClass; public DefineOrGetClassNode(RubyContext context, SourceSection sourceSection, String name, RubyNode moduleDefinedIn, RubyNode superClass) { super(context, sourceSection); this.name = name; this.moduleDefinedIn = adoptChild(moduleDefinedIn); this.superClass = adoptChild(superClass); } @Override public Object execute(VirtualFrame frame) { CompilerAsserts.neverPartOfCompilation(); final RubyContext context = getContext(); final RubyModule moduleDefinedInObject = (RubyModule) moduleDefinedIn.execute(frame); // Look for a current definition of the class, or create a new one final Object constantValue = moduleDefinedInObject.lookupConstant(name); RubyClass definingClass; if (constantValue == null) { final Object self = frame.getArguments(RubyArguments.class).getSelf(); RubyModule parentModule; if (self instanceof RubyModule) { parentModule = (RubyModule) self; } else { // Because it's top level, and so self is the magic main object parentModule = null; } final RubyClass superClassObject = (RubyClass) superClass.execute(frame); if (superClassObject instanceof RubyException.RubyExceptionClass) { definingClass = new RubyException.RubyExceptionClass(superClassObject, name); } else { definingClass = new RubyClass(parentModule, superClassObject, name); } moduleDefinedInObject.setConstant(name, definingClass); moduleDefinedInObject.getSingletonClass().setConstant(name, definingClass); definingClass.getRubyClass().include(moduleDefinedInObject); } else { if (constantValue instanceof RubyClass) { definingClass = (RubyClass) constantValue; } else { throw new RaiseException(context.getCoreLibrary().typeErrorIsNotA(constantValue.toString(), "class")); } } return definingClass; } }