Drop C++03 and C++98 support

CMakeLists.txt

@@ -14,15 +14,12 @@ target_include_directories(boost_lexical_cast INTERFACE include)
 
 target_link_libraries(boost_lexical_cast
   INTERFACE
-    Boost::array
-    Boost::assert
     Boost::config
     Boost::container
     Boost::core
     Boost::integer
     Boost::numeric_conversion
     Boost::range
-    Boost::static_assert
     Boost::throw_exception
     Boost::type_traits
 )

doc/lexical_cast.qbk

@@ -235,6 +235,10 @@ limitation of compiler options that you use.
 
 [section Changes]
 
+* [*boost 1.84.0 :]
+
+    * Dropped support of C++98 and C++03.
+
 * [*boost 1.56.0 :]
 
     * Added `boost::conversion::try_lexical_convert` functions.

example/generic_stringize.cpp

@@ -47,11 +47,11 @@ std::string stringize(const Sequence& seq) {
 }
 
 //` Step 3: Using the `stringize` with different types:
-#include <boost/fusion/adapted/boost_tuple.hpp>
+#include <boost/fusion/adapted/std_tuple.hpp>
 #include <boost/fusion/adapted/std_pair.hpp>
 
 int main() {
-    boost::tuple<char, int, char, int> decim('-', 10, 'e', 5);
+    std::tuple<char, int, char, int> decim('-', 10, 'e', 5);
     if (stringize(decim) != "-10e5") {
         return 1;
     }

example/small_examples.cpp

@@ -5,6 +5,8 @@
 // or a copy at <http://www.boost.org/LICENSE_1_0.txt>.)
 
 #include <boost/lexical_cast.hpp>
+
+#include <array>
 #include <string>
 #include <cstdio>
 
@@ -30,9 +32,9 @@ void log_errno(int yoko)
 
 void number_to_file(int number, std::FILE* file)
 {
-    typedef boost::array<char, 50> buf_t; // You can use std::array if your compiler supports it
+    using buf_t = std::array<char, 50>;
     buf_t buffer = boost::lexical_cast<buf_t>(number); // No dynamic memory allocation
-    std::fputs(buffer.begin(), file);
+    std::fputs(buffer.data(), file);
 }
 
 //] [/lexical_cast_fixed_buffer]

include/boost/detail/basic_pointerbuf.hpp

@@ -42,13 +42,8 @@ class basic_pointerbuf : public BufferT {
    basic_pointerbuf() : base_type() { this_type::setbuf(0, 0); }
    const charT* getnext() { return this->gptr(); }
 
-#ifndef BOOST_NO_USING_TEMPLATE
     using base_type::pptr;
     using base_type::pbase;
-#else
-    charT* pptr() const { return base_type::pptr(); }
-    charT* pbase() const { return base_type::pbase(); }
-#endif
 
 protected:
    // VC mistakenly assumes that `setbuf` and other functions are not referenced.

include/boost/detail/lcast_precision.hpp

@@ -21,23 +21,10 @@
 #include <boost/type_traits/is_abstract.hpp>
 #endif
 
-#if defined(BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS) || \
-  (defined(BOOST_MSVC) && (BOOST_MSVC<1310))
-
-#define BOOST_LCAST_NO_COMPILE_TIME_PRECISION
-#endif
-
-#ifdef BOOST_LCAST_NO_COMPILE_TIME_PRECISION
-#include <boost/assert.hpp>
-#else
-#include <boost/static_assert.hpp>
-#endif
-
 namespace boost { namespace detail {
 
 class lcast_abstract_stub {};
 
-#ifndef BOOST_LCAST_NO_COMPILE_TIME_PRECISION
 // Calculate an argument to pass to std::ios_base::precision from
 // lexical_cast. See alternative implementation for broken standard
 // libraries in lcast_get_precision below. Keep them in sync, please.
@@ -47,7 +34,7 @@ struct lcast_precision
 #ifdef BOOST_NO_IS_ABSTRACT
     typedef std::numeric_limits<T> limits; // No fix for SF:1358600.
 #else
-    typedef BOOST_DEDUCED_TYPENAME boost::conditional<
+    typedef typename boost::conditional<
         boost::is_abstract<T>::value
       , std::numeric_limits<lcast_abstract_stub>
       , std::numeric_limits<T>
@@ -74,95 +61,31 @@ struct lcast_precision
 
     BOOST_STATIC_CONSTANT(unsigned int, precision_dec = limits::digits10 + 1U);
 
-    BOOST_STATIC_ASSERT(!is_specialized_dec ||
+    static_assert(!is_specialized_dec ||
             precision_dec <= streamsize_max + 0UL
-        );
+        , "");
 
     BOOST_STATIC_CONSTANT(unsigned long, precision_bin =
             2UL + limits::digits * 30103UL / 100000UL
         );
 
-    BOOST_STATIC_ASSERT(!is_specialized_bin ||
+    static_assert(!is_specialized_bin ||
             (limits::digits + 0UL < ULONG_MAX / 30103UL &&
             precision_bin > limits::digits10 + 0UL &&
             precision_bin <= streamsize_max + 0UL)
-        );
+        , "");
 
     BOOST_STATIC_CONSTANT(std::streamsize, value =
             is_specialized_bin ? precision_bin
                                : is_specialized_dec ? precision_dec : 6
         );
 };
-#endif
+
 
 template<class T>
 inline std::streamsize lcast_get_precision(T* = 0)
 {
-#ifndef BOOST_LCAST_NO_COMPILE_TIME_PRECISION
     return lcast_precision<T>::value;
-#else // Follow lcast_precision algorithm at run-time:
-
-#ifdef BOOST_NO_IS_ABSTRACT
-    typedef std::numeric_limits<T> limits; // No fix for SF:1358600.
-#else
-    typedef BOOST_DEDUCED_TYPENAME boost::conditional<
-        boost::is_abstract<T>::value
-      , std::numeric_limits<lcast_abstract_stub>
-      , std::numeric_limits<T>
-      >::type limits;
-#endif
-
-    bool const use_default_precision =
-        !limits::is_specialized || limits::is_exact;
-
-    if(!use_default_precision)
-    { // Includes all built-in floating-point types, float, double ...
-      // and UDT types for which digits (significand bits) is defined (not zero)
-
-        bool const is_specialized_bin =
-            limits::radix == 2 && limits::digits > 0;
-        bool const is_specialized_dec =
-            limits::radix == 10 && limits::digits10 > 0;
-        std::streamsize const streamsize_max =
-            (boost::integer_traits<std::streamsize>::max)();
-        (void)streamsize_max;
-
-        if(is_specialized_bin)
-        { // Floating-point types with
-          // limits::digits defined by the specialization.
-
-            unsigned long const digits = limits::digits;
-            unsigned long const precision = 2UL + digits * 30103UL / 100000UL;
-            // unsigned long is selected because it is at least 32-bits
-            // and thus ULONG_MAX / 30103UL is big enough for all types.
-            BOOST_ASSERT(
-                    digits < ULONG_MAX / 30103UL &&
-                    precision > limits::digits10 + 0UL &&
-                    precision <= streamsize_max + 0UL
-                );
-            return precision;
-        }
-        else if(is_specialized_dec)
-        {   // Decimal Floating-point type, most likely a User Defined Type
-            // rather than a real floating-point hardware type.
-            unsigned int const precision = limits::digits10 + 1U;
-            BOOST_ASSERT(precision <= streamsize_max + 0UL);
-            return precision;
-        }
-    }
-
-    // Integral type (for which precision has no effect)
-    // or type T for which limits is NOT specialized,
-    // so assume stream precision remains the default 6 decimal digits.
-    // Warning: if your User-defined Floating-point type T is NOT specialized,
-    // then you may lose accuracy by only using 6 decimal digits.
-    // To avoid this, you need to specialize T with either
-    // radix == 2 and digits == the number of significand bits,
-    // OR
-    // radix = 10 and digits10 == the number of decimal digits.
-
-    return 6;
-#endif
 }
 
 template<class T>

include/boost/lexical_cast.hpp

@@ -23,24 +23,6 @@
 #   pragma once
 #endif
 
-#include <boost/config/pragma_message.hpp>
-#if defined(BOOST_NO_CXX11_RVALUE_REFERENCES) || \
-    defined(BOOST_NO_CXX11_AUTO_DECLARATIONS) || \
-    defined(BOOST_NO_CXX11_CONSTEXPR) || \
-    defined(BOOST_NO_CXX11_NULLPTR) || \
-    defined(BOOST_NO_CXX11_NOEXCEPT) || \
-    defined(BOOST_NO_CXX11_DEFAULTED_FUNCTIONS) || \
-    defined(BOOST_NO_CXX11_FINAL) || \
-    defined(BOOST_NO_CXX11_ALIGNOF) || \
-    defined(BOOST_NO_CXX11_STATIC_ASSERT) || \
-    defined(BOOST_NO_CXX11_SMART_PTR) || \
-    defined(BOOST_NO_CXX11_HDR_INITIALIZER_LIST) || \
-    defined(BOOST_NO_CXX11_HDR_TYPE_TRAITS)
-
-BOOST_PRAGMA_MESSAGE("C++03 support is deprecated in Boost.LexicalCast 1.82 and will be removed in Boost.LexicalCast 1.84.")
-
-#endif
-
 #if defined(BOOST_NO_STRINGSTREAM) || defined(BOOST_NO_STD_WSTRING)
 #define BOOST_LCAST_NO_WCHAR_T
 #endif
@@ -96,24 +78,20 @@ namespace boost
         );
     }
 #endif
-#ifndef BOOST_NO_CXX11_CHAR16_T
     template <typename Target>
     inline Target lexical_cast(const char16_t* chars, std::size_t count)
     {
         return ::boost::lexical_cast<Target>(
             ::boost::iterator_range<const char16_t*>(chars, chars + count)
         );
     }
-#endif
-#ifndef BOOST_NO_CXX11_CHAR32_T
     template <typename Target>
     inline Target lexical_cast(const char32_t* chars, std::size_t count)
     {
         return ::boost::lexical_cast<Target>(
             ::boost::iterator_range<const char32_t*>(chars, chars + count)
         );
     }
-#endif
 
 } // namespace boost
 

include/boost/lexical_cast/bad_lexical_cast.hpp

@@ -37,29 +37,23 @@ namespace boost
 #else
         public std::bad_cast
 #endif
-
-#if defined(BOOST_BORLANDC) && BOOST_WORKAROUND( BOOST_BORLANDC, < 0x560 )
-        // under bcc32 5.5.1 bad_cast doesn't derive from exception
-        , public std::exception
-#endif
-
     {
     public:
-        bad_lexical_cast() BOOST_NOEXCEPT
+        bad_lexical_cast() noexcept
 #ifndef BOOST_NO_TYPEID
            : source(&typeid(void)), target(&typeid(void))
 #endif
         {}
 
-        const char *what() const BOOST_NOEXCEPT_OR_NOTHROW BOOST_OVERRIDE {
+        const char *what() const noexcept override {
             return "bad lexical cast: "
                    "source type value could not be interpreted as target";
         }
 
-        ~bad_lexical_cast() BOOST_NOEXCEPT_OR_NOTHROW BOOST_OVERRIDE = default;
+        ~bad_lexical_cast() override = default;
 
-        bad_lexical_cast(const bad_lexical_cast&) BOOST_NOEXCEPT_OR_NOTHROW = default;
-        bad_lexical_cast& operator=(const bad_lexical_cast&) BOOST_NOEXCEPT_OR_NOTHROW = default;
+        bad_lexical_cast(const bad_lexical_cast&) = default;
+        bad_lexical_cast& operator=(const bad_lexical_cast&) = default;
 
 #ifndef BOOST_NO_TYPEID
     private:
@@ -71,15 +65,15 @@ namespace boost
     public:
         bad_lexical_cast(
                 const type_info_t &source_type_arg,
-                const type_info_t &target_type_arg) BOOST_NOEXCEPT
+                const type_info_t &target_type_arg) noexcept
             : source(&source_type_arg), target(&target_type_arg)
         {}
 
-        const type_info_t &source_type() const BOOST_NOEXCEPT {
+        const type_info_t &source_type() const noexcept {
             return *source;
         }
 
-        const type_info_t &target_type() const BOOST_NOEXCEPT {
+        const type_info_t &target_type() const noexcept {
             return *target;
         }