/**************************************************************
 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * 
 *************************************************************/


#include "sal/config.h"

#include <algorithm>

#include "osl/diagnose.h"
#include "rtl/byteseq.hxx"
#include "rtl/ustring.hxx"
#include "sal/types.h"
#include "typelib/typeclass.h"
#include "typelib/typedescription.hxx"

#include "lessoperators.hxx"

namespace com { namespace sun { namespace star { namespace uno {

bool operator<( const TypeDescription& rLeft, const TypeDescription& rRight) {
	OSL_ASSERT( rLeft.is() && rRight.is());
	const typelib_TypeDescription& rA = *rLeft.get();
	const typelib_TypeDescription& rB = *rRight.get();
	if( rA.eTypeClass != rA.eTypeClass)
		return (rA.eTypeClass < rB.eTypeClass);
	const sal_Int32 nCmp = rtl_ustr_compare_WithLength(
			rA.pTypeName->buffer, rA.pTypeName->length,
			rB.pTypeName->buffer, rB.pTypeName->length);
	return (nCmp < 0);
}

bool TypeDescEqual::operator()( const TypeDescription& rLeft, const TypeDescription& rRight) const
{
	OSL_ASSERT( rLeft.is() && rRight.is());
	const typelib_TypeDescription& rA = *rLeft.get();
	const typelib_TypeDescription& rB = *rRight.get();
	if( rA.eTypeClass != rB.eTypeClass)
		return false;
	const sal_Int32 nCmp = rtl_ustr_compare_WithLength(
			rA.pTypeName->buffer, rA.pTypeName->length,
			rB.pTypeName->buffer, rB.pTypeName->length);
	return (nCmp == 0);
}

sal_Int32 TypeDescHash::operator()( const TypeDescription& rTD) const
{
	OSL_ASSERT( rTD.is());
	const typelib_TypeDescription& rA = *rTD.get();
	sal_Int32 h = rtl_ustr_hashCode_WithLength( rA.pTypeName->buffer, rA.pTypeName->length);
	h ^= static_cast<sal_Int32>(rA.eTypeClass);
	return h;
}

} } } }

namespace rtl {

bool operator <(ByteSequence const & left, ByteSequence const & right) {
    const sal_Int32 nLen = std::min( left.getLength(), right.getLength());
    for( sal_Int32 i = 0; i < nLen; ++i )
    {
        if (left[i] < right[i]) {
            return true;
        }
        if (right[i] < left[i]) {
            return false;
        }
    }
    return left.getLength() < right.getLength();
}

}