/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (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.mozilla.org/MPL/
 *
 * 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.
 *
 * The Original Code is [Open Source Virtual Machine.].
 *
 * The Initial Developer of the Original Code is
 * Adobe System Incorporated.
 * Portions created by the Initial Developer are Copyright (C) 2004-2006
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Adobe AS3 Team
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either 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 MPL, 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 MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */


#include "avmplus.h"

using namespace MMgc;

namespace avmplus
{
	// See E4X 13.2.2, pg 64
    Namespace::Namespace(Atom prefix, Stringp uri, NamespaceType flags)
#ifdef DEBUGGER
		: AvmPlusScriptableObject(kNamespaceType)
#endif // DEBUGGER
	{
		// verify our parameters are interned strings
		AvmAssert (uri->isInterned());
		// prefix can be an interned string, undefined, or null
		AvmAssert (AvmCore::isName(prefix) || AvmCore::isNullOrUndefined(prefix));
		setPrefix(prefix);
		setUri(uri, flags);
	}

	Namespace::~Namespace()
	{
		WBATOM(MMgc::GC::GetGC(this), this, &m_prefix, 0);
		setUri(NULL, NS_Public);
	}

	void Namespace::setUri(Stringp uri, NamespaceType flags)
	{
		WBRC(GC::GetGC(this), this, &m_uri, (sint32)flags | (uintptr) uri);
	}

	void Namespace::setPrefix (Atom pre)
	{
		AvmAssert (AvmCore::isName(pre) || AvmCore::isNullOrUndefined(pre));
		// ensure that if the incoming Atom is a string, that it's interned
		AvmAssert(AvmCore::isString(pre) ? (AvmCore::atomToString(pre))->isInterned() : 1);

		WBATOM(MMgc::GC::GetGC(this), this, &m_prefix, pre);
	}

	bool Namespace::hasPrefix () const
	{
		return (AvmCore::isName(m_prefix) && AvmCore::atomToString(m_prefix)->length()>0);
	}

	bool Namespace::equalTo(const Namespace* other) const
	{
		if (isPrivate() || other->isPrivate())
		{
			// one of these namespaces is private, so compare using object identity
			return this == other;
		}
		else
		{
			// both are public, so compare using uri's.  they are intern'ed so we
			// can do a fast pointer compare.
            return m_uri == other->m_uri;
		}
	}

	// Iterator support - for in, for each
	Atom Namespace::nextName(const AvmCore *core, int index)
	{
		// first return "uri" then "prefix"
		if (index == 1)
			return core->kuri->atom();
		else if (index == 2)
			return core->kprefix->atom();
		else		{
			return nullStringAtom;
		}
	}

	Atom Namespace::nextValue(int index)
	{
		// first return uri then prefix
		if (index == 1)
			return this->getURI()->atom();
		else if (index == 2)
			return this->m_prefix;
		else
		{
			return undefinedAtom;
		}
	}

	int Namespace::nextNameIndex(int index)
	{
		if (index < 2)
			return index + 1;
		else 
			return 0;
	}

	Stringp Namespace::format(AvmCore* /*core*/) const
	{
		return getURI();
	}

#ifdef DEBUGGER
	Stringp Namespace::getTypeName() const
	{
		AvmCore *core = this->core();		

		if (core->callStack && core->callStack->env)
		{
			Toplevel *toplevel = core->callStack->env->toplevel();
			ClassClosure *clazz = toplevel->namespaceClass;

			if (clazz)
			{
				return clazz->format(core);
			}
		}

		return NULL;
	}
#endif

}