Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 219 insertions, 0 deletions

diff --git a/include/comphelper/anycompare.hxx b/include/comphelper/anycompare.hxx
new file mode 100644
index 000000000..3618106db
--- /dev/null
+++ b/include/comphelper/anycompare.hxx
@@ -0,0 +1,219 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   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 .
+ */
+
+#ifndef INCLUDED_COMPHELPER_ANYCOMPARE_HXX
+#define INCLUDED_COMPHELPER_ANYCOMPARE_HXX
+
+#include <comphelper/comphelperdllapi.h>
+
+#include <com/sun/star/lang/IllegalArgumentException.hpp>
+#include <com/sun/star/i18n/XCollator.hpp>
+
+#include <comphelper/extract.hxx>
+
+#include <memory>
+#include <utility>
+
+
+namespace comphelper
+{
+
+
+    //= IKeyPredicateLess
+
+    class SAL_NO_VTABLE IKeyPredicateLess
+    {
+    public:
+        virtual bool isLess( css::uno::Any const & _lhs, css::uno::Any const & _rhs ) const = 0;
+        virtual ~IKeyPredicateLess() {}
+    };
+
+
+    //= LessPredicateAdapter
+
+    struct LessPredicateAdapter
+    {
+        LessPredicateAdapter( const IKeyPredicateLess& _predicate )
+            :m_predicate( _predicate )
+        {
+        }
+
+        bool operator()( css::uno::Any const & _lhs, css::uno::Any const & _rhs ) const
+        {
+            return m_predicate.isLess( _lhs, _rhs );
+        }
+
+    private:
+        IKeyPredicateLess const &   m_predicate;
+    };
+
+
+    //= ScalarPredicateLess
+
+    template< typename SCALAR >
+    class ScalarPredicateLess final : public IKeyPredicateLess
+    {
+    public:
+        virtual bool isLess( css::uno::Any const & _lhs, css::uno::Any const & _rhs ) const override
+        {
+            SCALAR lhs(0), rhs(0);
+            if  (   !( _lhs >>= lhs )
+                ||  !( _rhs >>= rhs )
+                )
+                throw css::lang::IllegalArgumentException();
+            return lhs < rhs;
+        }
+    };
+
+
+    //= StringPredicateLess
+
+    class StringPredicateLess final : public IKeyPredicateLess
+    {
+    public:
+        virtual bool isLess( css::uno::Any const & _lhs, css::uno::Any const & _rhs ) const override
+        {
+            OUString lhs, rhs;
+            if  (   !( _lhs >>= lhs )
+                ||  !( _rhs >>= rhs )
+                )
+                throw css::lang::IllegalArgumentException();
+            return lhs < rhs;
+        }
+    };
+
+
+    //= StringCollationPredicateLess
+
+    class StringCollationPredicateLess final : public IKeyPredicateLess
+    {
+    public:
+        StringCollationPredicateLess( css::uno::Reference< css::i18n::XCollator >  i_collator )
+            :m_collator(std::move( i_collator ))
+        {
+        }
+
+        virtual bool isLess( css::uno::Any const & _lhs, css::uno::Any const & _rhs ) const override
+        {
+            OUString lhs, rhs;
+            if  (   !( _lhs >>= lhs )
+                ||  !( _rhs >>= rhs )
+                )
+                throw css::lang::IllegalArgumentException();
+            return m_collator->compareString( lhs, rhs ) < 0;
+        }
+
+    private:
+        css::uno::Reference< css::i18n::XCollator > const m_collator;
+    };
+
+
+    //= TypePredicateLess
+
+    class TypePredicateLess final : public IKeyPredicateLess
+    {
+    public:
+        virtual bool isLess( css::uno::Any const & _lhs, css::uno::Any const & _rhs ) const override
+        {
+            css::uno::Type lhs, rhs;
+            if  (   !( _lhs >>= lhs )
+                ||  !( _rhs >>= rhs )
+                )
+                throw css::lang::IllegalArgumentException();
+            return lhs.getTypeName() < rhs.getTypeName();
+        }
+    };
+
+
+    //= EnumPredicateLess
+
+    class EnumPredicateLess final : public IKeyPredicateLess
+    {
+    public:
+        EnumPredicateLess( css::uno::Type const & _enumType )
+            :m_enumType( _enumType )
+        {
+        }
+
+        virtual bool isLess( css::uno::Any const & _lhs, css::uno::Any const & _rhs ) const override
+        {
+            sal_Int32 lhs(0), rhs(0);
+            if  (   !::cppu::enum2int( lhs, _lhs )
+                ||  !::cppu::enum2int( rhs, _rhs )
+                ||  !_lhs.getValueType().equals( m_enumType )
+                ||  !_rhs.getValueType().equals( m_enumType )
+                )
+                throw css::lang::IllegalArgumentException();
+            return lhs < rhs;
+        }
+
+    private:
+        css::uno::Type const   m_enumType;
+    };
+
+
+    //= InterfacePredicateLess
+
+    class InterfacePredicateLess final : public IKeyPredicateLess
+    {
+    public:
+        virtual bool isLess( css::uno::Any const & _lhs, css::uno::Any const & _rhs ) const override
+        {
+            if  (   ( _lhs.getValueTypeClass() != css::uno::TypeClass_INTERFACE )
+                ||  ( _rhs.getValueTypeClass() != css::uno::TypeClass_INTERFACE )
+                )
+                throw css::lang::IllegalArgumentException();
+
+            css::uno::Reference< css::uno::XInterface > lhs( _lhs, css::uno::UNO_QUERY );
+            css::uno::Reference< css::uno::XInterface > rhs( _rhs, css::uno::UNO_QUERY );
+            return lhs.get() < rhs.get();
+        }
+    };
+
+
+    //= getStandardLessPredicate
+
+    /** creates a default IKeyPredicateLess instance for the given UNO type
+        @param i_type
+            the type for which a predicate instance should be created
+        @param i_collator
+            specifies a collator instance to use, or <NULL/>. If <NULL/>, strings will be compared using the <code>&lt</code>
+            operator, otherwise the collator will be used. The parameter is ignored if <arg>i_type</arg> does not specify
+            the string type.
+        @return
+            a default implementation of IKeyPredicateLess, which is able to compare values of the given type. If no
+            such default implementation is known for the given type, then <NULL/> is returned.
+    */
+    ::std::unique_ptr< IKeyPredicateLess > COMPHELPER_DLLPUBLIC
+        getStandardLessPredicate(
+            css::uno::Type const & i_type,
+            css::uno::Reference< css::i18n::XCollator > const & i_collator
+        );
+
+    /**
+        Compare two Anys.
+    */
+    bool COMPHELPER_DLLPUBLIC anyLess( css::uno::Any const & lhs, css::uno::Any const & rhs);
+
+} // namespace comphelper
+
+
+#endif // INCLUDED_COMPHELPER_ANYCOMPARE_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */