To do so, a few dependencies have been imported: * external/bsd/lutok * external/mit/lua * external/public-domain/sqlite * external/public-domain/xz The Kyua framework is the new generation of ATF (Automated Test Framework), it is composed of: * external/bsd/atf * external/bsd/kyua-atf-compat * external/bsd/kyua-cli * external/bsd/kyua-tester * tests Kyua/ATF being written in C++, it depends on libstdc++ which is provided by GCC. As this is not part of the sources, Kyua is only compiled when the native GCC utils are installed. To install Kyua do the following: * In a cross-build enviromnent, add the following to the build.sh commandline: -V MKBINUTILS=yes -V MKGCCCMDS=yes WARNING: At this point the import is still experimental, and not supported on native builds (a.k.a make build). Change-Id: I26aee23c5bbd2d64adcb7c1beb98fe0d479d7ada
257 lines
6.4 KiB
C++
257 lines
6.4 KiB
C++
// Copyright 2010 Google Inc.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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// * Neither the name of Google Inc. nor the names of its contributors
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// may be used to endorse or promote products derived from this software
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// without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#if !defined(UTILS_OPTIONAL_IPP)
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#define UTILS_OPTIONAL_IPP
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#include <cstddef>
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#include "utils/defs.hpp"
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#include "utils/optional.hpp"
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#include "utils/sanity.hpp"
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/// Initializes an optional object to the none value.
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template< class T >
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utils::optional< T >::optional(void) :
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_data(NULL)
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{
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}
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/// Explicitly initializes an optional object to the none value.
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///
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/// \param unused_none A copy of the utils::none instance.
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template< class T >
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utils::optional< T >::optional(
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utils::detail::none_t UTILS_UNUSED_PARAM(none)) :
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_data(NULL)
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{
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}
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/// Initializes an optional object to a non-none value.
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///
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/// \param data The initial value for the object.
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template< class T >
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utils::optional< T >::optional(const T& data) :
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_data(new T(data))
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{
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}
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/// Copy constructor.
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///
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/// \param other The optional object to copy from.
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template< class T >
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utils::optional< T >::optional(const optional< T >& other) :
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_data(other._data == NULL ? NULL : new T(*(other._data)))
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{
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}
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/// Destructor.
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template< class T >
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utils::optional< T >::~optional(void)
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{
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if (_data != NULL)
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delete _data;
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_data = NULL; // Prevent accidental reuse.
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}
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/// Explicitly assigns an optional object to the none value.
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///
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/// \param unused_none A copy of the utils::none instance.
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///
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/// \return A reference to this.
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template< class T >
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utils::optional< T >&
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utils::optional< T >::operator=(utils::detail::none_t UTILS_UNUSED_PARAM(none))
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{
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if (_data != NULL)
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delete _data;
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_data = NULL;
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return *this;
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}
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/// Assigns a new value to the optional object.
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///
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/// \param data The initial value for the object.
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///
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/// \return A reference to this.
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template< class T >
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utils::optional< T >&
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utils::optional< T >::operator=(const T& data)
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{
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T* new_data = new T(data);
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if (_data != NULL)
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delete _data;
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_data = new_data;
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return *this;
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}
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/// Copies an optional value.
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///
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/// \param other The optional object to copy from.
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///
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/// \return A reference to this.
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template< class T >
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utils::optional< T >&
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utils::optional< T >::operator=(const optional< T >& other)
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{
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T* new_data = other._data == NULL ? NULL : new T(*(other._data));
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if (_data != NULL)
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delete _data;
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_data = new_data;
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return *this;
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}
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/// Equality comparator.
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///
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/// \param other The other object to compare this one to.
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///
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/// \return True if this object and other are equal; false otherwise.
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template< class T >
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bool
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utils::optional< T >::operator==(const optional< T >& other) const
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{
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if (_data == NULL && other._data == NULL) {
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return true;
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} else if (_data == NULL || other._data == NULL) {
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return false;
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} else {
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INV(_data != NULL && other._data != NULL);
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return *_data == *other._data;
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}
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}
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/// Inequality comparator.
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///
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/// \param other The other object to compare this one to.
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///
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/// \return True if this object and other are different; false otherwise.
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template< class T >
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bool
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utils::optional< T >::operator!=(const optional< T >& other) const
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{
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return !(*this == other);
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}
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/// Gets the value hold by the optional object.
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///
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/// \pre The optional object must not be none.
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///
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/// \return A reference to the data.
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template< class T >
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const T&
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utils::optional< T >::get(void) const
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{
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PRE(_data != NULL);
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return *_data;
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}
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/// Gets the value of this object with a default fallback.
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///
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/// \param default_value The value to return if this object holds no value.
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///
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/// \return A reference to the data in the optional object, or the reference
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/// passed in as a parameter.
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template< class T >
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const T&
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utils::optional< T >::get_default(const T& default_value) const
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{
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if (_data != NULL)
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return *_data;
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else
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return default_value;
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}
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/// Tests whether the optional object contains data or not.
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///
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/// \return True if the object is not none; false otherwise.
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template< class T >
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utils::optional< T >::operator bool(void) const
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{
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return _data != NULL;
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}
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/// Tests whether the optional object contains data or not.
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///
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/// \return True if the object is not none; false otherwise.
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template< class T >
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T&
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utils::optional< T >::get(void)
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{
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PRE(_data != NULL);
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return *_data;
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}
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/// Injects the object into a stream.
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///
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/// \param output The stream into which to inject the object.
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/// \param object The object to format.
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///
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/// \return The output stream.
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template< class T >
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std::ostream& utils::operator<<(std::ostream& output,
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const optional< T >& object)
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{
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if (!object) {
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output << "none";
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} else {
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output << object.get();
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}
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return output;
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}
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/// Helper function to instantiate optional objects.
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///
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/// \param value The value for the optional object. Shouldn't be none, as
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/// optional objects can be constructed from none right away.
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///
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/// \return A new optional object.
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template< class T >
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utils::optional< T >
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utils::make_optional(const T& value)
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{
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return optional< T >(value);
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}
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#endif // !defined(UTILS_OPTIONAL_IPP)
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