Merge branch 'pull-request/#905-Add-support-for-type_identity' into d…

…evelopment
ETLCPP · Jun 11, 2024 · e159a6b · e159a6b
2 parents a8f5935 + 76f2cfb
commit e159a6b
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Showing 9 changed files with 45 additions and 5 deletions.
diff --git a/include/etl/exception.h b/include/etl/exception.h
@@ -100,7 +100,7 @@ namespace etl
 
     //***************************************************************************
     /// Gets the line for the exception.
-    /// \return const char* to the line.
+    /// \return int as line number.
     //***************************************************************************
     ETL_CONSTEXPR
     numeric_type line_number() const

diff --git a/include/etl/generators/type_traits_generator.h b/include/etl/generators/type_traits_generator.h
@@ -2295,6 +2295,17 @@ typedef integral_constant<bool, true>  true_type;
   template <typename T>
   using signed_type_t = typename signed_type<T>::type;
 #endif
+
+//*********************************************
+// type_identity
+
+template <typename T>
+struct type_identity { typedef T type; };
+
+#if ETL_USING_CPP11
+  template <typename T>
+  using type_identity_t = typename type_identity<T>::type;
+#endif
 }
 
 // Helper macros

diff --git a/include/etl/type_traits.h b/include/etl/type_traits.h
@@ -2288,6 +2288,17 @@ typedef integral_constant<bool, true>  true_type;
   template <typename T>
   using signed_type_t = typename signed_type<T>::type;
 #endif
+
+//*********************************************
+// type_identity
+
+template <typename T>
+struct type_identity { typedef T type; };
+
+#if ETL_USING_CPP11
+  template <typename T>
+  using type_identity_t = typename type_identity<T>::type;
+#endif
 }
 
 // Helper macros

diff --git a/include/etl/version.h b/include/etl/version.h
@@ -40,7 +40,7 @@ SOFTWARE.
 
 #define ETL_VERSION_MAJOR 20
 #define ETL_VERSION_MINOR 38
-#define ETL_VERSION_PATCH 16
+#define ETL_VERSION_PATCH 17
 
 #define ETL_VERSION       ETL_STRING(ETL_VERSION_MAJOR) "." ETL_STRING(ETL_VERSION_MINOR) "." ETL_STRING(ETL_VERSION_PATCH)
 #define ETL_VERSION_W     ETL_WIDE_STRING(ETL_VERSION_MAJOR) L"." ETL_WIDE_STRING(ETL_VERSION_MINOR) L"." ETL_WIDE_STRING(ETL_VERSION_PATCH)

diff --git a/library.json b/library.json
@@ -1,6 +1,6 @@
 {
   "name": "Embedded Template Library",
-  "version": "20.38.16",
+  "version": "20.38.17",
   "authors": {
     "name": "John Wellbelove",
     "email": "john.wellbelove@etlcpp.com"

diff --git a/library.properties b/library.properties
@@ -1,5 +1,5 @@
 name=Embedded Template Library
-version=20.38.16
+version=20.38.17
 author= John Wellbelove <john.wellbelove@etlcpp.com>
 maintainer=John Wellbelove <john.wellbelove@etlcpp.com>
 license=MIT

diff --git a/support/Release notes.txt b/support/Release notes.txt
@@ -1,4 +1,9 @@
 ===============================================================================
+20.38.17
+
+#895 Removed std algorithm calls from algorithm.h
+
+===============================================================================
 20.38.16
 
 Fixes:

diff --git a/test/test_type_traits.cpp b/test/test_type_traits.cpp
@@ -122,6 +122,13 @@ namespace
     NotDefaultConstructible(NotDefaultConstructible&&) = delete;
     NotDefaultConstructible& operator =(NotDefaultConstructible&) = delete;
   };
+
+  // A function to test etl::type_identity.
+  template <typename T>
+  T type_identity_test_add(T first, typename etl::type_identity<T>::type second)
+  {
+    return first + second;
+  }
 }
 
 // Definitions for when the STL and compiler built-ins are not available.
@@ -1320,4 +1327,10 @@ namespace
     CHECK_FALSE(bool(etl::is_base_of_all<Base, D1, D2, D3, D4>::value));
 #endif
   }
+
+  //*************************************************************************
+  TEST(test_type_identity) 
+  {
+    CHECK_CLOSE(type_identity_test_add(1.5f, 2), 3.5f, 0.01f);
+  }
 }
diff --git a/version.txt b/version.txt
@@ -1 +1 @@
-20.38.16
+20.38.17