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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.
*
* Copyright (C) 2002-2004 Jan Arne Petersen
* Copyright (C) 2004-2006 Thomas E Enebo
* Copyright (C) 2005 Charles O Nutter
* Copyright (C) 2006 Miguel Covarrubias
* Copyright (C) 2007 William N Dortch
*
* 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;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import org.jruby.internal.runtime.methods.DynamicMethod;
import org.jruby.runtime.builtin.IRubyObject;
import org.jruby.runtime.builtin.Variable;
/**
* This class is used to provide an intermediate superclass for modules and classes that include
* other modules. It inserts itself as the immediate superClass of the includer, but defers all
* module methods to the actual superclass. Multiple of these intermediate superclasses can be
* added for multiple included modules.
*
* This allows the normal superclass-based searches (searchMethod, getConstant, etc) to traverse
* the superclass ancestors as normal while the included modules do not actually show up in
* direct inheritance traversal.
*
* @see org.jruby.RubyModule
*/
public final class IncludedModuleWrapper extends RubyClass {
private final RubyModule delegate;
public IncludedModuleWrapper(Ruby runtime, RubyClass superClass, RubyModule delegate) {
super(runtime, superClass, false);
this.delegate = delegate;
this.metaClass = delegate.metaClass;
delegate.addIncludingHierarchy(this);
}
/**
* Overridden newIncludeClass implementation to allow attaching future includes to the correct module
* (i.e. the one to which this is attached)
*
* @see org.jruby.RubyModule#newIncludeClass(RubyClass)
*/
@Override
@Deprecated
public IncludedModuleWrapper newIncludeClass(RubyClass superClass) {
IncludedModuleWrapper includedModule = new IncludedModuleWrapper(getRuntime(), superClass, getNonIncludedClass());
// include its parent (and in turn that module's parents)
if (getSuperClass() != null) {
includedModule.includeModule(getSuperClass());
}
return includedModule;
}
@Override
public boolean isModule() {
return false;
}
@Override
public boolean isClass() {
return false;
}
@Override
public boolean isIncluded() {
return true;
}
@Override
public boolean isImmediate() {
return true;
}
@Override
public void setMetaClass(RubyClass newRubyClass) {
throw new UnsupportedOperationException("An included class is only a wrapper for a module");
}
@Override
public Map getMethods() {
return delegate.getMethods();
}
@Override
public Map getMethodsForWrite() {
return delegate.getMethodsForWrite();
}
@Override
public void addMethod(String name, DynamicMethod method) {
throw new UnsupportedOperationException("An included class is only a wrapper for a module");
}
public void setMethods(Map newMethods) {
throw new UnsupportedOperationException("An included class is only a wrapper for a module");
}
@Override
public String getName() {
return delegate.getName();
}
@Override
public RubyModule getNonIncludedClass() {
return delegate;
}
@Override
public RubyClass getRealClass() {
if (superClass == null) return null;
return superClass.getRealClass();
}
@Override
protected boolean isSame(RubyModule module) {
return delegate.isSame(module);
}
/**
* We don't want to reveal ourselves to Ruby code, so delegate this
* operation.
*/
@Override
public IRubyObject id() {
return delegate.id();
}
@Override
protected synchronized Map getClassVariables() {
return delegate.getClassVariables();
}
@Override
protected Map getClassVariablesForRead() {
return delegate.getClassVariablesForRead();
}
@Override
protected boolean variableTableContains(String name) {
return delegate.variableTableContains(name);
}
@Override
protected boolean variableTableFastContains(String internedName) {
return delegate.variableTableFastContains(internedName);
}
@Override
protected Object variableTableFetch(String name) {
return delegate.variableTableFetch(name);
}
@Override
protected Object variableTableFastFetch(String internedName) {
return delegate.variableTableFastFetch(internedName);
}
@Override
protected Object variableTableStore(String name, Object value) {
return delegate.variableTableStore(name, value);
}
@Override
protected Object variableTableFastStore(String internedName, Object value) {
return delegate.variableTableFastStore(internedName, value);
}
@Override
protected Object variableTableRemove(String name) {
return delegate.variableTableRemove(name);
}
@Override
protected void variableTableSync(List> vars) {
delegate.variableTableSync(vars);
}
//
// CONSTANT TABLE METHODS - pass to delegate
//
@Override
protected boolean constantTableContains(String name) {
return delegate.constantTableContains(name);
}
@Override
protected boolean constantTableFastContains(String internedName) {
return delegate.constantTableFastContains(internedName);
}
@Override
protected IRubyObject constantTableFetch(String name) {
return delegate.constantTableFetch(name);
}
@Override
protected IRubyObject constantTableFastFetch(String internedName) {
return delegate.constantTableFastFetch(internedName);
}
@Override
protected IRubyObject constantTableStore(String name, IRubyObject value) {
// FIXME: legal here? may want UnsupportedOperationException
return delegate.constantTableStore(name, value);
}
@Override
protected IRubyObject constantTableFastStore(String internedName, IRubyObject value) {
// FIXME: legal here? may want UnsupportedOperationException
return delegate.constantTableFastStore(internedName, value);
}
@Override
protected IRubyObject constantTableRemove(String name) {
// this _is_ legal (when removing an undef)
return delegate.constantTableRemove(name);
}
@Override
@Deprecated
public List getStoredConstantNameList() {
return delegate.getStoredConstantNameList();
}
@Override
public Collection getConstantNames() {
return delegate.getConstantNames();
}
@Override
public IRubyObject getAutoloadConstant(Ruby runtime, String name) {
return delegate.getAutoloadConstant(runtime, name);
}
}
