Update Boost in 3rdParty to version 1.56.0.

This updates Boost in our 3rdParty directory to version 1.56.0. Updated our update.sh script to stop on error. Changed error reporting in SwiftTools/CrashReporter.cpp to SWIFT_LOG due to missing include of <iostream> with newer Boost. Change-Id: I4b35c77de951333979a524097f35f5f83d325edc
author: Tobias Markmann <tm@ayena.de> 2014-10-19 20:22:58 (GMT)
committer: Tobias Markmann <tm@ayena.de> 2014-10-20 13:49:33 (GMT)
commit: 6b22dfcf59474dd016a0355a3102a1dd3692d92c (patch)
tree: 2b1fd33be433a91e81fee84fdc2bf1b52575d934 /3rdParty/Boost/src/boost/optional/optional.hpp
parent: 38b0cb785fea8eae5e48fae56440695fdfd10ee1 (diff)
download: swift-6b22dfcf59474dd016a0355a3102a1dd3692d92c.zip
swift-6b22dfcf59474dd016a0355a3102a1dd3692d92c.tar.bz2
1 files changed, 600 insertions, 79 deletions
diff --git a/3rdParty/Boost/src/boost/optional/optional.hpp b/3rdParty/Boost/src/boost/optional/optional.hpp
index 0d6dba4..07c4bd3 100644
--- a/3rdParty/Boost/src/boost/optional/optional.hpp
+++ b/3rdParty/Boost/src/boost/optional/optional.hpp
@@ -1,71 +1,69 @@
 // Copyright (C) 2003, 2008 Fernando Luis Cacciola Carballal.
+// Copyright (C) 2014 Andrzej Krzemienski.
 //
 // Use, modification, and distribution is subject to the Boost Software
 // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
 // http://www.boost.org/LICENSE_1_0.txt)
 //
 // See http://www.boost.org/libs/optional for documentation.
 //
 // You are welcome to contact the author at:
 //  fernando_cacciola@hotmail.com
 //
 // Revisions:
 // 27 Apr 2008 (improved swap) Fernando Cacciola, Niels Dekker, Thorsten Ottosen
+// 05 May 2014 (Added move semantics) Andrzej Krzemienski
 //
 #ifndef BOOST_OPTIONAL_OPTIONAL_FLC_19NOV2002_HPP
 #define BOOST_OPTIONAL_OPTIONAL_FLC_19NOV2002_HPP
 
 #include <new>
 #include <algorithm>
+#include <iosfwd>
 
 #include <boost/config.hpp>
 #include <boost/assert.hpp>
+#include <boost/core/explicit_operator_bool.hpp>
+#include <boost/optional/bad_optional_access.hpp>
+#include <boost/static_assert.hpp>
+#include <boost/throw_exception.hpp>
 #include <boost/type.hpp>
 #include <boost/type_traits/alignment_of.hpp>
 #include <boost/type_traits/has_nothrow_constructor.hpp>
 #include <boost/type_traits/type_with_alignment.hpp>
+#include <boost/type_traits/remove_const.hpp>
 #include <boost/type_traits/remove_reference.hpp>
+#include <boost/type_traits/decay.hpp>
+#include <boost/type_traits/is_base_of.hpp>
+#include <boost/type_traits/is_lvalue_reference.hpp>
+#include <boost/type_traits/is_nothrow_move_assignable.hpp>
+#include <boost/type_traits/is_nothrow_move_constructible.hpp>
 #include <boost/type_traits/is_reference.hpp>
+#include <boost/type_traits/is_rvalue_reference.hpp>
+#include <boost/type_traits/is_same.hpp>
 #include <boost/mpl/if.hpp>
 #include <boost/mpl/bool.hpp>
 #include <boost/mpl/not.hpp>
 #include <boost/detail/reference_content.hpp>
+#include <boost/move/utility.hpp>
 #include <boost/none.hpp>
-#include <boost/utility/swap.hpp>
 #include <boost/utility/addressof.hpp>
 #include <boost/utility/compare_pointees.hpp>
+#include <boost/utility/enable_if.hpp>
 #include <boost/utility/in_place_factory.hpp>
+#include <boost/utility/swap.hpp>
 
-#include <boost/optional/optional_fwd.hpp>
 
-#if BOOST_WORKAROUND(BOOST_MSVC, == 1200)
-// VC6.0 has the following bug:
-//   When a templated assignment operator exist, an implicit conversion
-//   constructing an optional<T> is used when assigment of the form:
-//     optional<T> opt ; opt = T(...);
-//   is compiled.
-//   However, optional's ctor is _explicit_ and the assignemt shouldn't compile.
-//   Therefore, for VC6.0 templated assignment is disabled.
-//
-#define BOOST_OPTIONAL_NO_CONVERTING_ASSIGNMENT
-#endif
 
-#if BOOST_WORKAROUND(BOOST_MSVC, == 1300)
-// VC7.0 has the following bug:
-//   When both a non-template and a template copy-ctor exist
-//   and the templated version is made 'explicit', the explicit is also
-//   given to the non-templated version, making the class non-implicitely-copyable.
-//
-#define BOOST_OPTIONAL_NO_CONVERTING_COPY_CTOR
-#endif
+#include <boost/optional/optional_fwd.hpp>
 
-#if BOOST_WORKAROUND(BOOST_MSVC, <= 1300) || BOOST_WORKAROUND(BOOST_INTEL_CXX_VERSION,<=700)
-// AFAICT only VC7.1 correctly resolves the overload set
+#if BOOST_WORKAROUND(BOOST_INTEL_CXX_VERSION,<=700)
+// AFAICT only Intel 7 correctly resolves the overload set
 // that includes the in-place factory taking functions,
-// so for the other VC versions, in-place factory support
+// so for the other icc versions, in-place factory support
 // is disabled
 #define BOOST_OPTIONAL_NO_INPLACE_FACTORY_SUPPORT
 #endif
 
 #if BOOST_WORKAROUND(__BORLANDC__, <= 0x551)
 // BCB (5.5.1) cannot parse the nested template struct in an inplace factory.
@@ -80,14 +78,13 @@
 //   some calls are resolved to this even if there are other better matches.
 //   The effect of this bug is that calls to converting ctors and assignments
 //   are incrorrectly sink to this general catch-all member function template as shown above.
 #define BOOST_OPTIONAL_WEAK_OVERLOAD_RESOLUTION
 #endif
 
-#if defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) > 302 \
-    && !defined(__INTEL_COMPILER)
+#if defined(__GNUC__) && !defined(__INTEL_COMPILER)
 // GCC since 3.3 has may_alias attribute that helps to alleviate optimizer issues with
 // regard to violation of the strict aliasing rules. The optional< T > storage type is marked
 // with this attribute in order to let the compiler know that it will alias objects of type T
 // and silence compilation warnings.
 #define BOOST_OPTIONAL_DETAIL_USE_ATTRIBUTE_MAY_ALIAS
 #endif
@@ -112,25 +109,24 @@ class in_place_factory_base ;
 class typed_in_place_factory_base ;
 
 // This forward is needed to refer to namespace scope swap from the member swap
 template<class T> void swap ( optional<T>& x, optional<T>& y );
 
 namespace optional_detail {
-
 // This local class is used instead of that in "aligned_storage.hpp"
 // because I've found the 'official' class to ICE BCB5.5
 // when some types are used with optional<>
 // (due to sizeof() passed down as a non-type template parameter)
 template <class T>
 class aligned_storage
 {
     // Borland ICEs if unnamed unions are used for this!
     union
     // This works around GCC warnings about breaking strict aliasing rules when casting storage address to T*
 #if defined(BOOST_OPTIONAL_DETAIL_USE_ATTRIBUTE_MAY_ALIAS)
-    __attribute__((may_alias))
+    __attribute__((__may_alias__))
 #endif
     dummy_u
     {
         char data[ sizeof(T) ];
         BOOST_DEDUCED_TYPENAME type_with_alignment<
           ::boost::alignment_of<T>::value >::type aligner_;
@@ -149,28 +145,55 @@ class aligned_storage
 
 template<class T>
 struct types_when_isnt_ref
 {
   typedef T const& reference_const_type ;
   typedef T &      reference_type ;
+#ifndef  BOOST_NO_CXX11_RVALUE_REFERENCES
+  typedef T &&     rval_reference_type ;
+  typedef T &&     reference_type_of_temporary_wrapper;
+#ifdef BOOST_MOVE_OLD_RVALUE_REF_BINDING_RULES
+  // GCC 4.4 has support for an early draft of rvalue references. The conforming version below
+  // causes warnings about returning references to a temporary.
+  static T&& move(T&& r) { return r; }
+#else
+  static rval_reference_type move(reference_type r) { return boost::move(r); }
+#endif
+#endif
   typedef T const* pointer_const_type ;
   typedef T *      pointer_type ;
   typedef T const& argument_type ;
 } ;
+
 template<class T>
 struct types_when_is_ref
 {
   typedef BOOST_DEDUCED_TYPENAME remove_reference<T>::type raw_type ;
 
-  typedef raw_type& reference_const_type ;
-  typedef raw_type& reference_type ;
-  typedef raw_type* pointer_const_type ;
-  typedef raw_type* pointer_type ;
-  typedef raw_type& argument_type ;
+  typedef raw_type&  reference_const_type ;
+  typedef raw_type&  reference_type ;
+#ifndef  BOOST_NO_CXX11_RVALUE_REFERENCES
+  typedef BOOST_DEDUCED_TYPENAME remove_const<raw_type>::type&& rval_reference_type ;
+  typedef raw_type&  reference_type_of_temporary_wrapper;
+  static reference_type move(reference_type r) { return r; }
+#endif
+  typedef raw_type*  pointer_const_type ;
+  typedef raw_type*  pointer_type ;
+  typedef raw_type&  argument_type ;
 } ;
 
+template <class To, class From>
+void prevent_binding_rvalue_ref_to_optional_lvalue_ref()
+{
+#ifndef BOOST_OPTIONAL_ALLOW_BINDING_TO_RVALUES
+  BOOST_STATIC_ASSERT_MSG(
+    !boost::is_lvalue_reference<To>::value || !boost::is_rvalue_reference<From>::value, 
+    "binding rvalue references to optional lvalue references is disallowed");
+#endif    
+}
+
 struct optional_tag {} ;
 
 template<class T>
 class optional_base : public optional_tag
 {
   private :
@@ -198,16 +221,18 @@ class optional_base : public optional_tag
     typedef BOOST_DEDUCED_TYPENAME is_reference<T>::type is_reference_predicate ;
 
   public:
     typedef BOOST_DEDUCED_TYPENAME mpl::if_<is_reference_predicate,types_when_ref,types_when_not_ref>::type types ;
 
   protected:
-    typedef bool (this_type::*unspecified_bool_type)() const;
-
     typedef BOOST_DEDUCED_TYPENAME types::reference_type       reference_type ;
     typedef BOOST_DEDUCED_TYPENAME types::reference_const_type reference_const_type ;
+#ifndef  BOOST_NO_CXX11_RVALUE_REFERENCES
+    typedef BOOST_DEDUCED_TYPENAME types::rval_reference_type  rval_reference_type ;
+    typedef BOOST_DEDUCED_TYPENAME types::reference_type_of_temporary_wrapper reference_type_of_temporary_wrapper ;
+#endif
     typedef BOOST_DEDUCED_TYPENAME types::pointer_type         pointer_type ;
     typedef BOOST_DEDUCED_TYPENAME types::pointer_const_type   pointer_const_type ;
     typedef BOOST_DEDUCED_TYPENAME types::argument_type        argument_type ;
 
     // Creates an optional<T> uninitialized.
     // No-throw
@@ -227,12 +252,23 @@ class optional_base : public optional_tag
       :
       m_initialized(false)
     {
       construct(val);
     }
 
+#ifndef  BOOST_NO_CXX11_RVALUE_REFERENCES
+    // move-construct an optional<T> initialized from an rvalue-ref to 'val'.
+    // Can throw if T::T(T&&) does
+    optional_base ( rval_reference_type val )
+      :
+      m_initialized(false)
+    {
+      construct( boost::move(val) );
+    }
+#endif
+
     // Creates an optional<T> initialized with 'val' IFF cond is true, otherwise creates an uninitialzed optional<T>.
     // Can throw if T::T(T const&) does
     optional_base ( bool cond, argument_type val )
       :
       m_initialized(false)
     {
@@ -247,24 +283,47 @@ class optional_base : public optional_tag
       m_initialized(false)
     {
       if ( rhs.is_initialized() )
         construct(rhs.get_impl());
     }
 
+#ifndef  BOOST_NO_CXX11_RVALUE_REFERENCES
+    // Creates a deep move of another optional<T>
+    // Can throw if T::T(T&&) does
+    optional_base ( optional_base&& rhs )
+      :
+      m_initialized(false)
+    {
+      if ( rhs.is_initialized() )
+        construct( boost::move(rhs.get_impl()) );
+    }
+#endif
+
+#ifndef  BOOST_NO_CXX11_RVALUE_REFERENCES
+
+    template<class Expr, class PtrExpr>
+    explicit optional_base ( Expr&& expr, PtrExpr const* tag )
+      :
+      m_initialized(false)
+    {
+      construct(boost::forward<Expr>(expr),tag);
+    }
 
+#else
     // This is used for both converting and in-place constructions.
     // Derived classes use the 'tag' to select the appropriate
     // implementation (the correct 'construct()' overload)
     template<class Expr>
     explicit optional_base ( Expr const& expr, Expr const* tag )
       :
       m_initialized(false)
     {
       construct(expr,tag);
     }
 
+#endif
 
 
     // No-throw (assuming T::~T() doesn't)
     ~optional_base() { destroy() ; }
 
     // Assigns from another optional<T> (deep-copies the rhs value)
@@ -279,12 +338,30 @@ class optional_base : public optional_tag
       else
       {
         if ( rhs.is_initialized() )
           construct(rhs.get_impl());
       }
     }
+    
+#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
+    // Assigns from another optional<T> (deep-moves the rhs value)
+    void assign ( optional_base&& rhs )
+    {
+      if (is_initialized())
+      {
+        if ( rhs.is_initialized() )
+             assign_value(boost::move(rhs.get_impl()), is_reference_predicate() );
+        else destroy();
+      }
+      else
+      {
+        if ( rhs.is_initialized() )
+          construct(boost::move(rhs.get_impl()));
+      }
+    }
+#endif 
 
     // Assigns from another _convertible_ optional<U> (deep-copies the rhs value)
     template<class U>
     void assign ( optional<U> const& rhs )
     {
       if (is_initialized())
@@ -297,41 +374,83 @@ class optional_base : public optional_tag
       {
         if ( rhs.is_initialized() )
           construct(static_cast<value_type>(rhs.get()));
       }
     }
 
+#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
+    // move-assigns from another _convertible_ optional<U> (deep-moves from the rhs value)
+    template<class U>
+    void assign ( optional<U>&& rhs )
+    {
+      typedef BOOST_DEDUCED_TYPENAME optional<U>::rval_reference_type ref_type;
+      if (is_initialized())
+      {
+        if ( rhs.is_initialized() )
+             assign_value(static_cast<ref_type>(rhs.get()), is_reference_predicate() );
+        else destroy();
+      }
+      else
+      {
+        if ( rhs.is_initialized() )
+          construct(static_cast<ref_type>(rhs.get()));
+      }
+    }
+#endif
+    
     // Assigns from a T (deep-copies the rhs value)
     void assign ( argument_type val )
     {
       if (is_initialized())
            assign_value(val, is_reference_predicate() );
       else construct(val);
     }
+    
+#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
+    // Assigns from a T (deep-moves the rhs value)
+    void assign ( rval_reference_type val )
+    {
+      if (is_initialized())
+           assign_value( boost::move(val), is_reference_predicate() );
+      else construct( boost::move(val) );
+    }
+#endif
 
     // Assigns from "none", destroying the current value, if any, leaving this UNINITIALIZED
     // No-throw (assuming T::~T() doesn't)
-    void assign ( none_t ) { destroy(); }
+    void assign ( none_t ) BOOST_NOEXCEPT { destroy(); }
 
 #ifndef BOOST_OPTIONAL_NO_INPLACE_FACTORY_SUPPORT
+
+#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
+    template<class Expr, class ExprPtr>
+    void assign_expr ( Expr&& expr, ExprPtr const* tag )
+    {
+      if (is_initialized())
+        assign_expr_to_initialized(boost::forward<Expr>(expr),tag);
+      else construct(boost::forward<Expr>(expr),tag);
+    }
+#else
     template<class Expr>
     void assign_expr ( Expr const& expr, Expr const* tag )
-      {
-        if (is_initialized())
-             assign_expr_to_initialized(expr,tag);
-        else construct(expr,tag);
-      }
+    {
+      if (is_initialized())
+        assign_expr_to_initialized(expr,tag);
+      else construct(expr,tag);
+    }
+#endif
+
 #endif
 
   public :
 
-    // Destroys the current value, if any, leaving this UNINITIALIZED
+    // **DEPPRECATED** Destroys the current value, if any, leaving this UNINITIALIZED
     // No-throw (assuming T::~T() doesn't)
-    void reset() { destroy(); }
+    void reset() BOOST_NOEXCEPT { destroy(); }
 
-    // Replaces the current value -if any- with 'val'
+    // **DEPPRECATED** Replaces the current value -if any- with 'val'
     void reset ( argument_type val ) { assign(val); }
 
     // Returns a pointer to the value if this is initialized, otherwise,
     // returns NULL.
     // No-throw
     pointer_const_type get_ptr() const { return m_initialized ? get_ptr_impl() : 0 ; }
@@ -340,17 +459,98 @@ class optional_base : public optional_tag
     bool is_initialized() const { return m_initialized ; }
 
   protected :
 
     void construct ( argument_type val )
      {
-       new (m_storage.address()) internal_type(val) ;
+       ::new (m_storage.address()) internal_type(val) ;
+       m_initialized = true ;
+     }
+     
+#ifndef  BOOST_NO_CXX11_RVALUE_REFERENCES
+    void construct ( rval_reference_type val )
+     {
+       ::new (m_storage.address()) internal_type( types::move(val) ) ;
+       m_initialized = true ;
+     }
+#endif
+
+
+#if (!defined BOOST_NO_CXX11_RVALUE_REFERENCES) && (!defined BOOST_NO_CXX11_VARIADIC_TEMPLATES)
+    // Constructs in-place
+    // upon exception *this is always uninitialized
+    template<class... Args>
+    void emplace_assign ( Args&&... args )
+     {
+       destroy();
+       ::new (m_storage.address()) internal_type( boost::forward<Args>(args)... );
+       m_initialized = true ;
+     }
+#elif (!defined BOOST_NO_CXX11_RVALUE_REFERENCES)
+    template<class Arg>
+    void emplace_assign ( Arg&& arg )
+     {
+       destroy();
+       ::new (m_storage.address()) internal_type( boost::forward<Arg>(arg) );
+       m_initialized = true ;
+     }
+#else
+    template<class Arg>
+    void emplace_assign ( const Arg& arg )
+     {
+       destroy();
+       ::new (m_storage.address()) internal_type( arg );
+       m_initialized = true ;
+     }
+     
+     template<class Arg>
+    void emplace_assign ( Arg& arg )
+     {
+       destroy();
+       ::new (m_storage.address()) internal_type( arg );
        m_initialized = true ;
      }
+#endif
 
 #ifndef BOOST_OPTIONAL_NO_INPLACE_FACTORY_SUPPORT
+
+#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
+    // Constructs in-place using the given factory
+    template<class Expr>
+    void construct ( Expr&& factory, in_place_factory_base const* )
+     {
+       BOOST_STATIC_ASSERT ( ::boost::mpl::not_<is_reference_predicate>::value ) ;
+       boost_optional_detail::construct<value_type>(factory, m_storage.address());
+       m_initialized = true ;
+     }
+
+    // Constructs in-place using the given typed factory
+    template<class Expr>
+    void construct ( Expr&& factory, typed_in_place_factory_base const* )
+     {
+       BOOST_STATIC_ASSERT ( ::boost::mpl::not_<is_reference_predicate>::value ) ;
+       factory.apply(m_storage.address()) ;
+       m_initialized = true ;
+     }
+
+    template<class Expr>
+    void assign_expr_to_initialized ( Expr&& factory, in_place_factory_base const* tag )
+     {
+       destroy();
+       construct(factory,tag);
+     }
+
+    // Constructs in-place using the given typed factory
+    template<class Expr>
+    void assign_expr_to_initialized ( Expr&& factory, typed_in_place_factory_base const* tag )
+     {
+       destroy();
+       construct(factory,tag);
+     }
+
+#else
     // Constructs in-place using the given factory
     template<class Expr>
     void construct ( Expr const& factory, in_place_factory_base const* )
      {
        BOOST_STATIC_ASSERT ( ::boost::mpl::not_<is_reference_predicate>::value ) ;
        boost_optional_detail::construct<value_type>(factory, m_storage.address());
@@ -379,33 +579,59 @@ class optional_base : public optional_tag
      {
        destroy();
        construct(factory,tag);
      }
 #endif
 
-    // Constructs using any expression implicitely convertible to the single argument
+#endif
+
+#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
+    // Constructs using any expression implicitly convertible to the single argument
+    // of a one-argument T constructor.
+    // Converting constructions of optional<T> from optional<U> uses this function with
+    // 'Expr' being of type 'U' and relying on a converting constructor of T from U.
+    template<class Expr>
+    void construct ( Expr&& expr, void const* )
+    {
+      new (m_storage.address()) internal_type(boost::forward<Expr>(expr)) ;
+      m_initialized = true ;
+    }
+
+    // Assigns using a form any expression implicitly convertible to the single argument
+    // of a T's assignment operator.
+    // Converting assignments of optional<T> from optional<U> uses this function with
+    // 'Expr' being of type 'U' and relying on a converting assignment of T from U.
+    template<class Expr>
+    void assign_expr_to_initialized ( Expr&& expr, void const* )
+    {
+      assign_value(boost::forward<Expr>(expr), is_reference_predicate());
+    }
+#else
+    // Constructs using any expression implicitly convertible to the single argument
     // of a one-argument T constructor.
     // Converting constructions of optional<T> from optional<U> uses this function with
     // 'Expr' being of type 'U' and relying on a converting constructor of T from U.
     template<class Expr>
     void construct ( Expr const& expr, void const* )
      {
        new (m_storage.address()) internal_type(expr) ;
        m_initialized = true ;
      }
 
-    // Assigns using a form any expression implicitely convertible to the single argument
+    // Assigns using a form any expression implicitly convertible to the single argument
     // of a T's assignment operator.
     // Converting assignments of optional<T> from optional<U> uses this function with
     // 'Expr' being of type 'U' and relying on a converting assignment of T from U.
     template<class Expr>
     void assign_expr_to_initialized ( Expr const& expr, void const* )
      {
        assign_value(expr, is_reference_predicate());
      }
 
+#endif
+
 #ifdef BOOST_OPTIONAL_WEAK_OVERLOAD_RESOLUTION
     // BCB5.64 (and probably lower versions) workaround.
     //   The in-place factories are supported by means of catch-all constructors
     //   and assignment operators (the functions are parameterized in terms of
     //   an arbitrary 'Expr' type)
     //   This compiler incorrectly resolves the overload set and sinks optional<T> and optional<U>
@@ -413,12 +639,26 @@ class optional_base : public optional_tag
     //   Thus, the following overload is needed to properly handle the case when the 'lhs'
     //   is another optional.
     //
     // For VC<=70 compilers this workaround dosen't work becasue the comnpiler issues and error
     // instead of choosing the wrong overload
     //
+#ifndef  BOOST_NO_CXX11_RVALUE_REFERENCES
+    // Notice that 'Expr' will be optional<T> or optional<U> (but not optional_base<..>)
+    template<class Expr>
+    void construct ( Expr&& expr, optional_tag const* )
+     {
+       if ( expr.is_initialized() )
+       {
+         // An exception can be thrown here.
+         // It it happens, THIS will be left uninitialized.
+         new (m_storage.address()) internal_type(types::move(expr.get())) ;
+         m_initialized = true ;
+       }
+     }
+#else
     // Notice that 'Expr' will be optional<T> or optional<U> (but not optional_base<..>)
     template<class Expr>
     void construct ( Expr const& expr, optional_tag const* )
      {
        if ( expr.is_initialized() )
        {
@@ -426,24 +666,27 @@ class optional_base : public optional_tag
          // It it happens, THIS will be left uninitialized.
          new (m_storage.address()) internal_type(expr.get()) ;
          m_initialized = true ;
        }
      }
 #endif
+#endif // defined BOOST_OPTIONAL_WEAK_OVERLOAD_RESOLUTION
 
     void assign_value ( argument_type val, is_not_reference_tag ) { get_impl() = val; }
     void assign_value ( argument_type val, is_reference_tag     ) { construct(val); }
+#ifndef  BOOST_NO_CXX11_RVALUE_REFERENCES
+    void assign_value ( rval_reference_type val, is_not_reference_tag ) { get_impl() = static_cast<rval_reference_type>(val); }
+    void assign_value ( rval_reference_type val, is_reference_tag     ) { construct( static_cast<rval_reference_type>(val) ); }
+#endif
 
     void destroy()
     {
       if ( m_initialized )
         destroy_impl(is_reference_predicate()) ;
     }
 
-    unspecified_bool_type safe_bool() const { return m_initialized ? &this_type::is_initialized : 0 ; }
-
     reference_const_type get_impl() const { return dereference(get_object(), is_reference_predicate() ) ; }
     reference_type       get_impl()       { return dereference(get_object(), is_reference_predicate() ) ; }
 
     pointer_const_type get_ptr_impl() const { return cast_ptr(get_object(), is_reference_predicate() ) ; }
     pointer_type       get_ptr_impl()       { return cast_ptr(get_object(), is_reference_predicate() ) ; }
 
@@ -473,13 +716,13 @@ class optional_base : public optional_tag
     reference_const_type dereference( internal_type const* p, is_reference_tag     ) const { return p->get() ; }
     reference_type       dereference( internal_type*       p, is_reference_tag     )       { return p->get() ; }
 
 #if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x581))
     void destroy_impl ( is_not_reference_tag ) { get_ptr_impl()->internal_type::~internal_type() ; m_initialized = false ; }
 #else
-    void destroy_impl ( is_not_reference_tag ) { get_ptr_impl()->T::~T() ; m_initialized = false ; }
+    void destroy_impl ( is_not_reference_tag ) { get_ptr_impl()->~T() ; m_initialized = false ; }
 #endif
 
     void destroy_impl ( is_reference_tag     ) { m_initialized = false ; }
 
     // If T is of reference type, trying to get a pointer to the held value must result in a compile-time error.
     // Decent compilers should disallow conversions from reference_content<T>* to T*, but just in case,
@@ -497,42 +740,50 @@ class optional_base : public optional_tag
 
 template<class T>
 class optional : public optional_detail::optional_base<T>
 {
     typedef optional_detail::optional_base<T> base ;
 
-    typedef BOOST_DEDUCED_TYPENAME base::unspecified_bool_type  unspecified_bool_type ;
-
   public :
 
     typedef optional<T> this_type ;
 
     typedef BOOST_DEDUCED_TYPENAME base::value_type           value_type ;
     typedef BOOST_DEDUCED_TYPENAME base::reference_type       reference_type ;
     typedef BOOST_DEDUCED_TYPENAME base::reference_const_type reference_const_type ;
+#ifndef  BOOST_NO_CXX11_RVALUE_REFERENCES
+    typedef BOOST_DEDUCED_TYPENAME base::rval_reference_type  rval_reference_type ;
+    typedef BOOST_DEDUCED_TYPENAME base::reference_type_of_temporary_wrapper reference_type_of_temporary_wrapper ;
+#endif
     typedef BOOST_DEDUCED_TYPENAME base::pointer_type         pointer_type ;
     typedef BOOST_DEDUCED_TYPENAME base::pointer_const_type   pointer_const_type ;
     typedef BOOST_DEDUCED_TYPENAME base::argument_type        argument_type ;
 
     // Creates an optional<T> uninitialized.
     // No-throw
-    optional() : base() {}
+    optional() BOOST_NOEXCEPT : base() {}
 
     // Creates an optional<T> uninitialized.
     // No-throw
-    optional( none_t none_ ) : base(none_) {}
+    optional( none_t none_ ) BOOST_NOEXCEPT : base(none_) {}
 
     // Creates an optional<T> initialized with 'val'.
     // Can throw if T::T(T const&) does
     optional ( argument_type val ) : base(val) {}
 
+#ifndef  BOOST_NO_CXX11_RVALUE_REFERENCES
+    // Creates an optional<T> initialized with 'move(val)'.
+    // Can throw if T::T(T &&) does
+    optional ( rval_reference_type val ) : base( boost::forward<T>(val) ) 
+      {optional_detail::prevent_binding_rvalue_ref_to_optional_lvalue_ref<T, rval_reference_type>();}
+#endif
+
     // Creates an optional<T> initialized with 'val' IFF cond is true, otherwise creates an uninitialized optional.
     // Can throw if T::T(T const&) does
     optional ( bool cond, argument_type val ) : base(cond,val) {}
 
-#ifndef BOOST_OPTIONAL_NO_CONVERTING_COPY_CTOR
     // NOTE: MSVC needs templated versions first
 
     // Creates a deep copy of another convertible optional<U>
     // Requires a valid conversion from U to T.
     // Can throw if T::T(U const&) does
     template<class U>
@@ -540,90 +791,200 @@ class optional : public optional_detail::optional_base<T>
       :
       base()
     {
       if ( rhs.is_initialized() )
         this->construct(rhs.get());
     }
+    
+#ifndef  BOOST_NO_CXX11_RVALUE_REFERENCES
+    // Creates a deep move of another convertible optional<U>
+    // Requires a valid conversion from U to T.
+    // Can throw if T::T(U&&) does
+    template<class U>
+    explicit optional ( optional<U> && rhs )
+      :
+      base()
+    {
+      if ( rhs.is_initialized() )
+        this->construct( boost::move(rhs.get()) );
+    }
 #endif
 
 #ifndef BOOST_OPTIONAL_NO_INPLACE_FACTORY_SUPPORT
     // Creates an optional<T> with an expression which can be either
     //  (a) An instance of InPlaceFactory (i.e. in_place(a,b,...,n);
     //  (b) An instance of TypedInPlaceFactory ( i.e. in_place<T>(a,b,...,n);
-    //  (c) Any expression implicitely convertible to the single type
+    //  (c) Any expression implicitly convertible to the single type
     //      of a one-argument T's constructor.
     //  (d*) Weak compilers (BCB) might also resolved Expr as optional<T> and optional<U>
     //       even though explicit overloads are present for these.
     // Depending on the above some T ctor is called.
-    // Can throw is the resolved T ctor throws.
+    // Can throw if the resolved T ctor throws.
+#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
+
+
+  template<class Expr>
+  explicit optional ( Expr&& expr, 
+                      BOOST_DEDUCED_TYPENAME boost::disable_if_c<
+                        (boost::is_base_of<optional_detail::optional_tag, BOOST_DEDUCED_TYPENAME boost::decay<Expr>::type>::value) || 
+                        boost::is_same<BOOST_DEDUCED_TYPENAME boost::decay<Expr>::type, none_t>::value >::type* = 0 
+  ) 
+    : base(boost::forward<Expr>(expr),boost::addressof(expr)) 
+    {optional_detail::prevent_binding_rvalue_ref_to_optional_lvalue_ref<T, Expr&&>();}
+
+#else
     template<class Expr>
     explicit optional ( Expr const& expr ) : base(expr,boost::addressof(expr)) {}
-#endif
+#endif // !defined BOOST_NO_CXX11_RVALUE_REFERENCES
+#endif // !defined BOOST_OPTIONAL_NO_INPLACE_FACTORY_SUPPORT
 
     // Creates a deep copy of another optional<T>
     // Can throw if T::T(T const&) does
     optional ( optional const& rhs ) : base( static_cast<base const&>(rhs) ) {}
 
+#ifndef  BOOST_NO_CXX11_RVALUE_REFERENCES
+	// Creates a deep move of another optional<T>
+	// Can throw if T::T(T&&) does
+	optional ( optional && rhs ) 
+	  BOOST_NOEXCEPT_IF(::boost::is_nothrow_move_constructible<T>::value)
+	  : base( boost::move(rhs) ) 
+	{}
+
+#endif
    // No-throw (assuming T::~T() doesn't)
     ~optional() {}
 
 #if !defined(BOOST_OPTIONAL_NO_INPLACE_FACTORY_SUPPORT) && !defined(BOOST_OPTIONAL_WEAK_OVERLOAD_RESOLUTION)
     // Assigns from an expression. See corresponding constructor.
     // Basic Guarantee: If the resolved T ctor throws, this is left UNINITIALIZED
+#ifndef  BOOST_NO_CXX11_RVALUE_REFERENCES
+
+    template<class Expr>
+    BOOST_DEDUCED_TYPENAME boost::disable_if_c<
+      boost::is_base_of<optional_detail::optional_tag, BOOST_DEDUCED_TYPENAME boost::decay<Expr>::type>::value || 
+        boost::is_same<BOOST_DEDUCED_TYPENAME boost::decay<Expr>::type, none_t>::value,
+      optional&
+    >::type 
+    operator= ( Expr&& expr )
+      {
+        optional_detail::prevent_binding_rvalue_ref_to_optional_lvalue_ref<T, Expr&&>();
+        this->assign_expr(boost::forward<Expr>(expr),boost::addressof(expr));
+        return *this ;
+      }
+
+#else
     template<class Expr>
     optional& operator= ( Expr const& expr )
       {
         this->assign_expr(expr,boost::addressof(expr));
         return *this ;
       }
-#endif
-
+#endif // !defined  BOOST_NO_CXX11_RVALUE_REFERENCES
+#endif // !defined(BOOST_OPTIONAL_NO_INPLACE_FACTORY_SUPPORT) && !defined(BOOST_OPTIONAL_WEAK_OVERLOAD_RESOLUTION)
 
-#ifndef BOOST_OPTIONAL_NO_CONVERTING_ASSIGNMENT
-    // Assigns from another convertible optional<U> (converts && deep-copies the rhs value)
+    // Copy-assigns from another convertible optional<U> (converts && deep-copies the rhs value)
     // Requires a valid conversion from U to T.
     // Basic Guarantee: If T::T( U const& ) throws, this is left UNINITIALIZED
     template<class U>
     optional& operator= ( optional<U> const& rhs )
       {
         this->assign(rhs);
         return *this ;
       }
+      
+#ifndef  BOOST_NO_CXX11_RVALUE_REFERENCES
+    // Move-assigns from another convertible optional<U> (converts && deep-moves the rhs value)
+    // Requires a valid conversion from U to T.
+    // Basic Guarantee: If T::T( U && ) throws, this is left UNINITIALIZED
+    template<class U>
+    optional& operator= ( optional<U> && rhs )
+      {
+        this->assign(boost::move(rhs));
+        return *this ;
+      }
 #endif
 
     // Assigns from another optional<T> (deep-copies the rhs value)
     // Basic Guarantee: If T::T( T const& ) throws, this is left UNINITIALIZED
     //  (NOTE: On BCB, this operator is not actually called and left is left UNMODIFIED in case of a throw)
     optional& operator= ( optional const& rhs )
       {
         this->assign( static_cast<base const&>(rhs) ) ;
         return *this ;
       }
 
+#ifndef  BOOST_NO_CXX11_RVALUE_REFERENCES
+    // Assigns from another optional<T> (deep-moves the rhs value)
+    optional& operator= ( optional && rhs ) 
+	  BOOST_NOEXCEPT_IF(::boost::is_nothrow_move_constructible<T>::value && ::boost::is_nothrow_move_assignable<T>::value)
+      {
+        this->assign( static_cast<base &&>(rhs) ) ;
+        return *this ;
+      }
+#endif
+
     // Assigns from a T (deep-copies the rhs value)
     // Basic Guarantee: If T::( T const& ) throws, this is left UNINITIALIZED
     optional& operator= ( argument_type val )
       {
         this->assign( val ) ;
         return *this ;
       }
 
+#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
+    // Assigns from a T (deep-moves the rhs value)
+    optional& operator= ( rval_reference_type val )
+      {
+        optional_detail::prevent_binding_rvalue_ref_to_optional_lvalue_ref<T, rval_reference_type>();
+        this->assign( boost::move(val) ) ;
+        return *this ;
+      }
+#endif
+
     // Assigns from a "none"
     // Which destroys the current value, if any, leaving this UNINITIALIZED
     // No-throw (assuming T::~T() doesn't)
-    optional& operator= ( none_t none_ )
+    optional& operator= ( none_t none_ ) BOOST_NOEXCEPT
       {
         this->assign( none_ ) ;
         return *this ;
       }
+      
+#if (!defined BOOST_NO_CXX11_RVALUE_REFERENCES) && (!defined BOOST_NO_CXX11_VARIADIC_TEMPLATES)
+    // Constructs in-place
+    // upon exception *this is always uninitialized
+    template<class... Args>
+    void emplace ( Args&&... args )
+     {
+       this->emplace_assign( boost::forward<Args>(args)... );
+     }
+#elif (!defined BOOST_NO_CXX11_RVALUE_REFERENCES)
+    template<class Arg>
+    void emplace ( Arg&& arg )
+     {
+       this->emplace_assign( boost::forward<Arg>(arg) );
+     }
+#else
+    template<class Arg>
+    void emplace ( const Arg& arg )
+     {
+       this->emplace_assign( arg );
+     }
+     
+    template<class Arg>
+    void emplace ( Arg& arg )
+     {
+       this->emplace_assign( arg );
+     }
+#endif
 
     void swap( optional & arg )
+	  BOOST_NOEXCEPT_IF(::boost::is_nothrow_move_constructible<T>::value && ::boost::is_nothrow_move_assignable<T>::value)
       {
         // allow for Koenig lookup
-        using boost::swap;
-        swap(*this, arg);
+        boost::swap(*this, arg);
       }
 
 
     // Returns a reference to the value if this is initialized, otherwise,
     // the behaviour is UNDEFINED
     // No-throw
@@ -640,23 +1001,145 @@ class optional : public optional_detail::optional_base<T>
     pointer_const_type operator->() const { BOOST_ASSERT(this->is_initialized()) ; return this->get_ptr_impl() ; }
     pointer_type       operator->()       { BOOST_ASSERT(this->is_initialized()) ; return this->get_ptr_impl() ; }
 
     // Returns a reference to the value if this is initialized, otherwise,
     // the behaviour is UNDEFINED
     // No-throw
+#ifndef BOOST_NO_CXX11_REF_QUALIFIERS
+    reference_const_type operator *() const& { return this->get() ; }
+    reference_type       operator *() &      { return this->get() ; }
+    reference_type_of_temporary_wrapper operator *() && { return boost::move(this->get()) ; }
+#else
     reference_const_type operator *() const { return this->get() ; }
     reference_type       operator *()       { return this->get() ; }
+#endif // !defined BOOST_NO_CXX11_REF_QUALIFIERS
+
+#ifndef BOOST_NO_CXX11_REF_QUALIFIERS
+    reference_const_type value() const&
+      { 
+        if (this->is_initialized())
+          return this->get() ;
+        else
+          throw_exception(bad_optional_access());
+      }
+      
+    reference_type value() &
+      { 
+        if (this->is_initialized())
+          return this->get() ;
+        else
+          throw_exception(bad_optional_access());
+      }
+      
+    reference_type_of_temporary_wrapper value() &&
+      { 
+        if (this->is_initialized())
+          return boost::move(this->get()) ;
+        else
+          throw_exception(bad_optional_access());
+      }
 
-    // implicit conversion to "bool"
-    // No-throw
-    operator unspecified_bool_type() const { return this->safe_bool() ; }
+#else 
+    reference_const_type value() const
+      { 
+        if (this->is_initialized())
+          return this->get() ;
+        else
+          throw_exception(bad_optional_access());
+      }
+      
+    reference_type value()
+      { 
+        if (this->is_initialized())
+          return this->get() ;
+        else
+          throw_exception(bad_optional_access());
+      }
+#endif
 
-    // This is provided for those compilers which don't like the conversion to bool
-    // on some contexts.
-    bool operator!() const { return !this->is_initialized() ; }
+
+#ifndef BOOST_NO_CXX11_REF_QUALIFIERS
+    template <class U>
+    value_type value_or ( U&& v ) const&
+      { 
+        if (this->is_initialized())
+          return get();
+        else
+          return boost::forward<U>(v);
+      }
+    
+    template <class U>
+    value_type value_or ( U&& v ) && 
+      { 
+        if (this->is_initialized())
+          return boost::move(get());
+        else
+          return boost::forward<U>(v);
+      }
+#elif !defined BOOST_NO_CXX11_RVALUE_REFERENCES
+    template <class U>
+    value_type value_or ( U&& v ) const 
+      {
+        if (this->is_initialized())
+          return get();
+        else
+          return boost::forward<U>(v);
+      }
+#else
+    template <class U>
+    value_type value_or ( U const& v ) const 
+      { 
+        if (this->is_initialized())
+          return get();
+        else
+          return v;
+      }
+#endif
+
+
+#ifndef BOOST_NO_CXX11_REF_QUALIFIERS
+    template <typename F>
+    value_type value_or_eval ( F f ) const&
+      {
+        if (this->is_initialized())
+          return get();
+        else
+          return f();
+      }
+      
+    template <typename F>
+    value_type value_or_eval ( F f ) &&
+      {
+        if (this->is_initialized())
+          return boost::move(get());
+        else
+          return f();
+      }
+#else
+    template <typename F>
+    value_type value_or_eval ( F f ) const
+      {
+        if (this->is_initialized())
+          return get();
+        else
+          return f();
+      }
+#endif
+      
+    bool operator!() const BOOST_NOEXCEPT { return !this->is_initialized() ; }
+    
+    BOOST_EXPLICIT_OPERATOR_BOOL_NOEXCEPT()
+} ;
+
+#ifndef  BOOST_NO_CXX11_RVALUE_REFERENCES
+template<class T>
+class optional<T&&>
+{
+  BOOST_STATIC_ASSERT_MSG(sizeof(T) == 0, "Optional rvalue references are illegal.");
 } ;
+#endif
 
 // Returns optional<T>(v)
 template<class T>
 inline
 optional<T> make_optional ( T const& v  )
 {
@@ -740,12 +1223,17 @@ inline
 BOOST_DEDUCED_TYPENAME optional<T>::pointer_type
 get_pointer ( optional<T>& opt )
 {
   return opt.get_ptr() ;
 }
 
+// Forward declaration to prevent operator safe-bool from being used.
+template<class CharType, class CharTrait, class T>
+std::basic_ostream<CharType, CharTrait>&
+operator<<(std::basic_ostream<CharType, CharTrait>& out, optional<T> const& v);
+
 // optional's relational operators ( ==, !=, <, >, <=, >= ) have deep-semantics (compare values).
 // WARNING: This is UNLIKE pointers. Use equal_pointees()/less_pointess() in generic code instead.
 
 
 //
 // optional<T> vs optional<T> cases
@@ -853,24 +1341,24 @@ bool operator >= ( T const& x, optional<T> const& y )
 //
 // optional<T> vs none cases
 //
 
 template<class T>
 inline
-bool operator == ( optional<T> const& x, none_t )
-{ return equal_pointees(x, optional<T>() ); }
+bool operator == ( optional<T> const& x, none_t ) BOOST_NOEXCEPT
+{ return !x; }
 
 template<class T>
 inline
 bool operator < ( optional<T> const& x, none_t )
 { return less_pointees(x,optional<T>() ); }
 
 template<class T>
 inline
-bool operator != ( optional<T> const& x, none_t y )
-{ return !( x == y ) ; }
+bool operator != ( optional<T> const& x, none_t ) BOOST_NOEXCEPT
+{ return bool(x); }
 
 template<class T>
 inline
 bool operator > ( optional<T> const& x, none_t y )
 { return y < x ; }
 
@@ -887,24 +1375,24 @@ bool operator >= ( optional<T> const& x, none_t y )
 //
 // none vs optional<T> cases
 //
 
 template<class T>
 inline
-bool operator == ( none_t , optional<T> const& y )
-{ return equal_pointees(optional<T>() ,y); }
+bool operator == ( none_t , optional<T> const& y ) BOOST_NOEXCEPT
+{ return !y; }
 
 template<class T>
 inline
 bool operator < ( none_t , optional<T> const& y )
 { return less_pointees(optional<T>() ,y); }
 
 template<class T>
 inline
-bool operator != ( none_t x, optional<T> const& y )
-{ return !( x == y ) ; }
+bool operator != ( none_t, optional<T> const& y ) BOOST_NOEXCEPT
+{ return bool(y); }
 
 template<class T>
 inline
 bool operator > ( none_t x, optional<T> const& y )
 { return y < x ; }
 
@@ -946,12 +1434,43 @@ struct swap_selector<true>
             y = boost::none ;
         else if( !hasY )
             x = boost::none ;
     }
 };
 
+#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
+template<>
+struct swap_selector<false>
+{
+    template<class T>
+    static void optional_swap ( optional<T>& x, optional<T>& y ) 
+    //BOOST_NOEXCEPT_IF(::boost::is_nothrow_move_constructible<T>::value && BOOST_NOEXCEPT_EXPR(boost::swap(*x, *y)))
+    {
+        if(x)
+        {
+            if (y)
+            {
+                boost::swap(*x, *y);
+            }
+            else
+            {
+                y = boost::move(*x);
+                x = boost::none;
+            }
+        }
+        else
+        {
+            if (y)
+            {
+                x = boost::move(*y);
+                y = boost::none;
+            }
+        }
+    }
+};
+#else
 template<>
 struct swap_selector<false>
 {
     template<class T>
     static void optional_swap ( optional<T>& x, optional<T>& y )
     {
@@ -972,19 +1491,21 @@ struct swap_selector<false>
         {
             // Boost.Utility.Swap will take care of ADL and workarounds for broken compilers
             boost::swap(x.get(),y.get());
         }
     }
 };
+#endif // !defined BOOST_NO_CXX11_RVALUE_REFERENCES
 
 } // namespace optional_detail
 
 template<class T>
 struct optional_swap_should_use_default_constructor : has_nothrow_default_constructor<T> {} ;
 
 template<class T> inline void swap ( optional<T>& x, optional<T>& y )
+  //BOOST_NOEXCEPT_IF(::boost::is_nothrow_move_constructible<T>::value && BOOST_NOEXCEPT_EXPR(boost::swap(*x, *y)))
 {
     optional_detail::swap_selector<optional_swap_should_use_default_constructor<T>::value>::optional_swap(x, y);
 }
 
 } // namespace boost
author	Tobias Markmann <tm@ayena.de>	2014-10-19 20:22:58 (GMT)
committer	Tobias Markmann <tm@ayena.de>	2014-10-20 13:49:33 (GMT)
commit	6b22dfcf59474dd016a0355a3102a1dd3692d92c (patch)
tree	2b1fd33be433a91e81fee84fdc2bf1b52575d934 /3rdParty/Boost/src/boost/optional/optional.hpp
parent	38b0cb785fea8eae5e48fae56440695fdfd10ee1 (diff)
download	swift-6b22dfcf59474dd016a0355a3102a1dd3692d92c.zip swift-6b22dfcf59474dd016a0355a3102a1dd3692d92c.tar.bz2