/*
***** BEGIN LICENSE BLOCK *****
* Version: CPL 1.0/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Common Public
* License Version 1.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.eclipse.org/legal/cpl-v10.html
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* Copyright (C) 2001-2002 Jan Arne Petersen <jpetersen@uni-bonn.de>
* Copyright (C) 2001-2002 Benoit Cerrina <b.cerrina@wanadoo.fr>
* Copyright (C) 2002 Anders Bengtsson <ndrsbngtssn@yahoo.se>
* Copyright (C) 2004 Thomas E Enebo <enebo@acm.org>
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
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package org.jruby.ast;
import java.util.List;
import org.jruby.Ruby;
import org.jruby.RubyClass;
import org.jruby.RubyModule;
import org.jruby.ast.visitor.NodeVisitor;
import org.jruby.evaluator.ASTInterpreter;
import org.jruby.lexer.yacc.ISourcePosition;
import org.jruby.parser.StaticScope;
import org.jruby.runtime.Block;
import org.jruby.runtime.ThreadContext;
import org.jruby.runtime.builtin.IRubyObject;
/**
* A class statement (name, superClass, body). Classes bodies also define their own scope.
*/
public class ClassNode extends Node implements IScopingNode {
private final Colon3Node cpath;
private final StaticScope scope;
private final Node bodyNode;
private final Node superNode;
public ClassNode(ISourcePosition position, Colon3Node cpath, StaticScope scope, Node bodyNode, Node superNode) {
super(position);
assert cpath != null : "cpath is not null";
assert scope != null : "scope is not null";
assert bodyNode != null : "bodyNode is not null";
this.cpath = cpath;
this.scope = scope;
this.bodyNode = bodyNode;
this.superNode = superNode;
}
public NodeType getNodeType() {
return NodeType.CLASSNODE;
}
/**
* Accept for the visitor pattern.
* @param iVisitor the visitor
**/
public Object accept(NodeVisitor iVisitor) {
return iVisitor.visitClassNode(this);
}
/**
* Gets the body of this class.
*
* @return the contents
*/
public Node getBodyNode() {
return bodyNode;
}
/**
* Get the static scoping information.
*
* @return the scoping info
*/
public StaticScope getScope() {
return scope;
}
/**
* Gets the className.
* @return Returns representation of class path+name
*/
public Colon3Node getCPath() {
return cpath;
}
/**
* Gets the superNode.
* @return Returns a Node
*/
public Node getSuperNode() {
return superNode;
}
public List<Node> childNodes() {
return Node.createList(cpath, bodyNode, superNode);
}
@Override
public IRubyObject interpret(Ruby runtime, ThreadContext context, IRubyObject self, Block aBlock) {
RubyModule enclosingClass = cpath.getEnclosingModule(runtime, context, self, aBlock);
// TODO: Figure out how this can happen and possibly remove
if (enclosingClass == null) throw runtime.newTypeError("no outer class/module");
RubyClass superClass = null;
if (superNode != null) {
IRubyObject superObj = superNode.interpret(runtime, context, self, aBlock);
RubyClass.checkInheritable(superObj);
superClass = (RubyClass)superObj;
}
RubyClass clazz = enclosingClass.defineOrGetClassUnder(cpath.getName(), superClass);
scope.setModule(clazz);
IRubyObject classBodyResult = ASTInterpreter.evalClassDefinitionBody(runtime, context, scope, bodyNode, clazz, self, aBlock);
return classBodyResult;
}
}