Support for char16_t, char32_t, u16string, u32string

hash/doc/changes.qbk

@@ -191,4 +191,8 @@
 * Fix for recent versions of Visual C++ which have removed `std::unary_function`
   and `std::binary_function` ([ticket 12353]).
 
+[h2 Boost 1.65.0]
+
+* Support for `char16_t`, `char32_t`, `u16string`, `u32string`
+
 [endsect]

hash/doc/ref.xml

@@ -162,6 +162,42 @@ file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
         </method>
       </struct-specialization>
 
+      <struct-specialization name="hash">
+        <template></template>
+        <specialization>
+          <template-arg>char16_t</template-arg>
+        </specialization>
+        <method name="operator()" cv="const">
+          <type>std::size_t</type>
+          <parameter name="val">
+            <paramtype>char16_t</paramtype>
+          </parameter>
+          <returns>
+            <para>Unspecified in TR1, except that equal arguments yield the same result.</para>
+            <para><functionname>hash_value</functionname>(val) in Boost.</para>
+          </returns>
+          <throws><para>Doesn't throw</para></throws>
+        </method>
+      </struct-specialization>
+
+      <struct-specialization name="hash">
+        <template></template>
+        <specialization>
+          <template-arg>char32_t</template-arg>
+        </specialization>
+        <method name="operator()" cv="const">
+          <type>std::size_t</type>
+          <parameter name="val">
+            <paramtype>char32_t</paramtype>
+          </parameter>
+          <returns>
+            <para>Unspecified in TR1, except that equal arguments yield the same result.</para>
+            <para><functionname>hash_value</functionname>(val) in Boost.</para>
+          </returns>
+          <throws><para>Doesn't throw</para></throws>
+        </method>
+      </struct-specialization>
+
       <struct-specialization name="hash">
         <template></template>
         <specialization>
@@ -396,6 +432,42 @@ file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
         </method>
       </struct-specialization>
 
+      <struct-specialization name="hash">
+        <template></template>
+        <specialization>
+          <template-arg>std::u16string</template-arg>
+        </specialization>
+        <method name="operator()" cv="const">
+          <type>std::size_t</type>
+          <parameter name="val">
+            <paramtype>std::u16string const&amp;</paramtype>
+          </parameter>
+          <returns>
+            <para>Unspecified in TR1, except that equal arguments yield the same result.</para>
+            <para><functionname>hash_value</functionname>(val) in Boost.</para>
+          </returns>
+          <throws><para>Doesn't throw</para></throws>
+        </method>
+      </struct-specialization>
+
+      <struct-specialization name="hash">
+        <template></template>
+        <specialization>
+          <template-arg>std::u32string</template-arg>
+        </specialization>
+        <method name="operator()" cv="const">
+          <type>std::size_t</type>
+          <parameter name="val">
+            <paramtype>std::u32string const&amp;</paramtype>
+          </parameter>
+          <returns>
+            <para>Unspecified in TR1, except that equal arguments yield the same result.</para>
+            <para><functionname>hash_value</functionname>(val) in Boost.</para>
+          </returns>
+          <throws><para>Doesn't throw</para></throws>
+        </method>
+      </struct-specialization>
+
       <struct-specialization name="hash">
         <template>
           <template-type-parameter name="T"/>
@@ -597,6 +669,16 @@ for(; first != last; ++first)
           <parameter name="val"><paramtype>wchar_t</paramtype></parameter>
         </signature>
 
+        <signature>
+          <type>std::size_t</type>
+          <parameter name="val"><paramtype>char16_t</paramtype></parameter>
+        </signature>
+
+        <signature>
+          <type>std::size_t</type>
+          <parameter name="val"><paramtype>char32_t</paramtype></parameter>
+        </signature>
+
         <signature>
           <type>std::size_t</type>
           <parameter name="val"><paramtype>short</paramtype></parameter>
@@ -833,7 +915,8 @@ for(; first != last; ++first)
               <tbody>
                 <row>
                   <entry><code>bool</code>,
-                    <code>char</code>, <code>signed char</code>, <code>unsigned char</code>, <code>wchar_t</code>,
+                    <code>char</code>, <code>signed char</code>, <code>unsigned char</code>,
+                    <code>wchar_t</code>, <code>char16_t</code>, <code>char32_t</code>,
                     <code>short</code>, <code>unsigned short</code>,
                     <code>int</code>, <code>unsigned int</code>, <code>long</code>, <code>unsigned long</code>
                   </entry>

hash/test/hash_string_test.cpp

@@ -80,12 +80,68 @@ void wstring_tests()
 }
 #endif
 
+#if !defined(BOOST_NO_CXX11_CHAR16_T)
+void u16string_tests()
+{
+    compile_time_tests((std::u16string*) 0);
+
+    BOOST_HASH_TEST_NAMESPACE::hash<std::u16string> x1;
+    BOOST_HASH_TEST_NAMESPACE::hash<std::u16string> x2;
+
+    BOOST_TEST(x1(u"Hello") == x2(std::u16string(u"Hel") + u"lo"));
+    BOOST_TEST(x1(u"") == x2(std::u16string()));
+
+#if defined(BOOST_HASH_TEST_EXTENSIONS)
+    std::u16string value1;
+    std::u16string value2(u"Hello");
+
+    BOOST_TEST(x1(value1) == BOOST_HASH_TEST_NAMESPACE::hash_value(value1));
+    BOOST_TEST(x1(value2) == BOOST_HASH_TEST_NAMESPACE::hash_value(value2));
+    BOOST_TEST(BOOST_HASH_TEST_NAMESPACE::hash_value(value1) ==
+            BOOST_HASH_TEST_NAMESPACE::hash_range(value1.begin(), value1.end()));
+    BOOST_TEST(BOOST_HASH_TEST_NAMESPACE::hash_value(value2) ==
+            BOOST_HASH_TEST_NAMESPACE::hash_range(value2.begin(), value2.end()));
+#endif
+}
+#endif
+
+#if !defined(BOOST_NO_CXX11_CHAR32_T)
+void u32string_tests()
+{
+    compile_time_tests((std::u32string*) 0);
+
+    BOOST_HASH_TEST_NAMESPACE::hash<std::u32string> x1;
+    BOOST_HASH_TEST_NAMESPACE::hash<std::u32string> x2;
+
+    BOOST_TEST(x1(U"Hello") == x2(std::u32string(U"Hel") + U"lo"));
+    BOOST_TEST(x1(U"") == x2(std::u32string()));
+
+#if defined(BOOST_HASH_TEST_EXTENSIONS)
+    std::u32string value1;
+    std::u32string value2(U"Hello");
+
+    BOOST_TEST(x1(value1) == BOOST_HASH_TEST_NAMESPACE::hash_value(value1));
+    BOOST_TEST(x1(value2) == BOOST_HASH_TEST_NAMESPACE::hash_value(value2));
+    BOOST_TEST(BOOST_HASH_TEST_NAMESPACE::hash_value(value1) ==
+            BOOST_HASH_TEST_NAMESPACE::hash_range(value1.begin(), value1.end()));
+    BOOST_TEST(BOOST_HASH_TEST_NAMESPACE::hash_value(value2) ==
+            BOOST_HASH_TEST_NAMESPACE::hash_range(value2.begin(), value2.end()));
+#endif
+}
+#endif
+
 int main()
 {
     string_tests();
     string0_tests();
 #if !defined(BOOST_NO_STD_WSTRING) && !defined(BOOST_NO_INTRINSIC_WCHAR_T)
     wstring_tests();
+#endif
+#if !defined(BOOST_NO_CXX11_CHAR16_T)
+    u16string_tests();
+#endif
+#if !defined(BOOST_NO_CXX11_CHAR32_T)
+    u32string_tests();
 #endif
     return boost::report_errors();
 }

include/boost/functional/hash/hash.hpp

@@ -465,6 +465,12 @@ namespace boost
     BOOST_HASH_SPECIALIZE(unsigned char)
 #if !defined(BOOST_NO_INTRINSIC_WCHAR_T)
     BOOST_HASH_SPECIALIZE(wchar_t)
+#endif
+#if !defined(BOOST_NO_CXX11_CHAR16_T)
+    BOOST_HASH_SPECIALIZE(char16_t)
+#endif
+#if !defined(BOOST_NO_CXX11_CHAR32_T)
+    BOOST_HASH_SPECIALIZE(char32_t)
 #endif
     BOOST_HASH_SPECIALIZE(short)
     BOOST_HASH_SPECIALIZE(unsigned short)
@@ -481,6 +487,12 @@ namespace boost
 #if !defined(BOOST_NO_STD_WSTRING) && !defined(BOOST_NO_INTRINSIC_WCHAR_T)
     BOOST_HASH_SPECIALIZE_REF(std::wstring)
 #endif
+#if !defined(BOOST_NO_CXX11_CHAR16_T)
+    BOOST_HASH_SPECIALIZE_REF(std::basic_string<char16_t>)
+#endif
+#if !defined(BOOST_NO_CXX11_CHAR32_T)
+    BOOST_HASH_SPECIALIZE_REF(std::basic_string<char32_t>)
+#endif
 
 #if !defined(BOOST_NO_LONG_LONG)
     BOOST_HASH_SPECIALIZE(boost::long_long_type)