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Diffstat (limited to '')
-rw-r--r-- | include/comphelper/extract.hxx | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/include/comphelper/extract.hxx b/include/comphelper/extract.hxx new file mode 100644 index 0000000000..c8ab9c6e6e --- /dev/null +++ b/include/comphelper/extract.hxx @@ -0,0 +1,113 @@ +/* -*- 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_EXTRACT_HXX +#define INCLUDED_COMPHELPER_EXTRACT_HXX + +#include <sal/config.h> + +#include <cassert> + +#include <com/sun/star/lang/IllegalArgumentException.hpp> +#include <com/sun/star/uno/TypeClass.hpp> +#include <com/sun/star/uno/Type.h> +#include <com/sun/star/uno/Any.hxx> + +namespace cppu +{ +/** + * Sets enum from int32 value. This function does NOT check for valid enum values! + * + * @param nEnum int32 enum value + * @param rType enum type + * @return enum or empty any. + */ +inline css::uno::Any int2enum(sal_Int32 nEnum, const css::uno::Type& rType) +{ + assert(rType.getTypeClass() == css::uno::TypeClass_ENUM); + return css::uno::Any(&nEnum, rType); +} + +/** + * Sets int32 from enum or int in any. + * + * @param[out] rnEnum int32 enum value + * @param rAny enum or int + * @retval true if enum or int value was set + * @retval false otherwise + */ +inline bool enum2int(sal_Int32& rnEnum, const css::uno::Any& rAny) +{ + if (rAny.getValueTypeClass() == css::uno::TypeClass_ENUM) + { + rnEnum = *static_cast<const sal_Int32*>(rAny.getValue()); + return true; + } + + return rAny >>= rnEnum; +} + +/** + * Sets int32 from enum or int in any with additional typecheck + * + * @param[out] eRet the enum value as int. If there is no enum of the given type + * a css::lang::IllegalArgumentException is thrown + * @param rAny enum or int + * @throws css::lang::IllegalArgumentException + */ +template <typename E> inline void any2enum(E& eRet, const css::uno::Any& rAny) +{ + // check for typesafe enum + if (!(rAny >>= eRet)) + { + // if not enum, maybe integer? + sal_Int32 nValue = 0; + if (!(rAny >>= nValue)) + throw css::lang::IllegalArgumentException(); + + eRet = static_cast<E>(nValue); + } +} + +/** + * Extracts a boolean either as a bool or an integer from + * an any. If there is no bool or integer inside the any + * a css::lang::IllegalArgumentException is thrown + * + * @throws css::lang::IllegalArgumentException + */ +inline bool any2bool(const css::uno::Any& rAny) +{ + bool b; + if (rAny >>= b) + { + return b; + } + else + { + sal_Int32 nValue = 0; + if (!(rAny >>= nValue)) + throw css::lang::IllegalArgumentException(); + return nValue != 0; + } +} +} + +#endif + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |