jruby/src/org/jruby/ast/ClassNode.java at serializable_procs · MSNexploder/jruby · GitHub

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***** 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.

* 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

* of those above. If you wish to allow use of your version of this file only

* under the terms of either the GPL or the LGPL, and not to allow others to

* use your version of this file under the terms of the CPL, indicate your

* decision by deleting the provisions above and replace them with the notice

* and other provisions required by the GPL or the LGPL. If you do not delete

* the provisions above, a recipient may use your version of this file under

* the terms of any one of the CPL, the GPL or the LGPL.

***** END LICENSE BLOCK *****/

package org.jruby.ast;

import java.io.IOException;

import java.io.ObjectInput;

import java.io.ObjectOutput;

import java.util.List;

import org.jruby.Ruby;

import org.jruby.RubyClass;

import org.jruby.RubyInstanceConfig;

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 static final long serialVersionUID = 0L;

private Colon3Node cpath;

private StaticScope scope;

private Node bodyNode;

private Node superNode;

public ClassNode() {

super();

}

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;

}

boolean definedAlready = enclosingClass.isConstantDefined(cpath.getName());

RubyClass clazz = enclosingClass.defineOrGetClassUnder(cpath.getName(), superClass);

scope.setModule(clazz);

IRubyObject classBodyResult = ASTInterpreter.evalClassDefinitionBody(runtime, context, scope, bodyNode, clazz, self, aBlock);

// Experimental class reification support, to create real Java classes

// for Ruby classes after the first opening

if (!definedAlready && RubyInstanceConfig.REIFY_RUBY_CLASSES) {

clazz.reify();

}

return classBodyResult;

}

public void writeExternal(ObjectOutput out) throws IOException {

super.writeExternal(out);

out.writeObject(cpath);

out.writeObject(scope);

out.writeObject(bodyNode);

out.writeObject(superNode);

}

public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {

super.readExternal(in);

cpath = (Colon3Node)in.readObject();

scope = (StaticScope)in.readObject();

bodyNode = (Node)in.readObject();

superNode = (Node)in.readObject();

}

jruby/src/org/jruby/ast/ClassNode.java at serializable_procs · MSNexploder/jruby · GitHub

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