binaryurp/source/binaryany.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <sal/config.h>
  21
  22 #include <cassert>
  23 #include <utility>
  24
  25 #include <typelib/typeclass.h>
  26 #include <typelib/typedescription.hxx>
  27 #include <uno/any2.h>
  28
  29 #include "binaryany.hxx"
  30
  31 namespace binaryurp {
  32
  33 namespace {
  34
  35 // Cf. com::sun::star::uno::Any move ctor in
  36 // include/com/sun/star/uno/Any.hxx:
  37 void moveInternals(uno_Any & from, uno_Any & to) {
  38     uno_any_construct(&to, nullptr, nullptr, nullptr);
  39     std::swap(from.pType, to.pType);
  40     std::swap(from.pData, to.pData);
  41     std::swap(from.pReserved, to.pReserved);
  42     if (to.pData == &from.pReserved) {
  43         to.pData = &to.pReserved;
  44     }
  45     // This leaves to.pData (where "to" is now VOID) dangling to somewhere (cf.
  46     // CONSTRUCT_EMPTY_ANY, cppu/source/uno/prim.hxx), but what's relevant is
  47     // only that it isn't a nullptr (as e.g. >>= -> uno_type_assignData ->
  48     // _assignData takes a null pSource to mean "construct a default value").
  49 }
  50
  51 }
  52
  53 BinaryAny::BinaryAny() noexcept {
  54     uno_any_construct(&data_, nullptr, nullptr, nullptr);
  55 }
  56
  57 BinaryAny::BinaryAny(css::uno::TypeDescription const & type, void * value)
  58     noexcept
  59 {
  60     assert(type.is());
  61     uno_any_construct(&data_, value, type.get(), nullptr);
  62 }
  63
  64 BinaryAny::BinaryAny(uno_Any const & raw) noexcept {
  65     assert(raw.pType != nullptr);
  66     data_.pType = raw.pType;
  67     typelib_typedescriptionreference_acquire(data_.pType);
  68     data_.pData = raw.pData == &raw.pReserved ? &data_.pReserved : raw.pData;
  69     data_.pReserved = raw.pReserved;
  70 }
  71
  72 BinaryAny::BinaryAny(BinaryAny const & other) noexcept {
  73     uno_type_any_construct(&data_, other.data_.pData, other.data_.pType, nullptr);
  74 }
  75
  76 BinaryAny::BinaryAny(BinaryAny && other) noexcept {
  77     moveInternals(other.data_, data_);
  78 }
  79
  80 BinaryAny::~BinaryAny() noexcept {
  81     uno_any_destruct(&data_, nullptr);
  82 }
  83
  84 BinaryAny & BinaryAny::operator =(BinaryAny const & other) noexcept {
  85     if (&other != this) {
  86         uno_type_any_assign(&data_, other.data_.pData, other.data_.pType, nullptr, nullptr);
  87     }
  88     return *this;
  89 }
  90
  91 BinaryAny & BinaryAny::operator =(BinaryAny && other) noexcept {
  92     uno_any_destruct(&data_, nullptr);
  93     moveInternals(other.data_, data_);
  94     return *this;
  95 }
  96
  97 css::uno::TypeDescription BinaryAny::getType() const noexcept {
  98     return css::uno::TypeDescription(data_.pType);
  99 }
 100
 101 void * BinaryAny::getValue(css::uno::TypeDescription const & type) const
 102     noexcept
 103 {
 104     assert(type.is());
 105     assert(
 106         type.get()->eTypeClass == typelib_TypeClass_ANY ||
 107          type.equals(css::uno::TypeDescription(data_.pType)));
 108     return type.get()->eTypeClass == typelib_TypeClass_ANY
 109         ? &data_ : data_.pData;
 110 }
 111
 112 }
 113
 114 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */