/* ***** 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 
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 * 
 * 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 ] Adobe Systems Incorporated. All Rights 
 * Reserved. 
 * 
 * Contributor(s): Adobe AS3 Team
 * 
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#include "avmplus.h"

using namespace MMgc;

namespace avmplus
{
	// See E4X 13.2.2, pg 64
    Namespace::Namespace(Atom prefix, Stringp uri, NamespaceType flags)
	{
		// 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);
#ifdef DEBUGGER
		AvmCore *core = (AvmCore *) GC::GetGC(this)->GetGCContextVariable (MMgc::GC::GCV_AVMCORE);
		if(core->allocationTracking)
		{
			AvmCore::chargeAllocation(atom());
		}
#endif
	}

	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();
	}
}