+The following is an example of an alias template: -
SWIG currently parses the new using name = syntax, but -ignores the definition:
+
+template< typename T1, typename T2, int >
+class SomeType {
+ T1 a;
+ T2 b;
+ int c;
+};
+
+template< typename T2 >
+using TypedefName = SomeType<char*, T2, 5>;
++These are partially supported as SWIG will parse these and identify them, however, they are ignored as they are not added to the type system. A warning such as the following is issued: +
+ ++example.i:13: Warning 342: The 'using' keyword in template aliasing is not fully supported yet. ++
+Similarly for non-template type aliasing: +
using PFD = void (*)(double); // New introduced syntax
You should still define the typedefs using the old syntax:
++A warning will be issued: +
+ ++example.i:17: Warning 341: The 'using' keyword in type aliasing is not fully supported yet. ++
The equivalent old style typedefs can be used as a workaround:
typedef void (*PFD)(double); // The old style
diff --git a/Examples/test-suite/common.mk b/Examples/test-suite/common.mk
index b496fe3c4..3e5b7789c 100644
--- a/Examples/test-suite/common.mk
+++ b/Examples/test-suite/common.mk
@@ -454,7 +454,7 @@ CPP0X_TEST_CASES = \
# cpp0x_constructors \ # not supported by any compiler yet
# cpp0x_hash_tables \ # not fully implemented yet
# cpp0x_lambda_functions \ # not supported by GCC or MSVC yet
-# cpp0x_template_typedefs \ # not supported by any compiler yet
+# cpp0x_template_typedefs \ # not supported by any compiler yet (now in gcc-4.7)
# cpp0x_thread_local \ # not supported by any compiler yet
# cpp0x_unrestricted_unions \ # not supported by any compiler yet (now in gcc-4.6)
diff --git a/Examples/test-suite/cpp0x_template_typedefs.i b/Examples/test-suite/cpp0x_template_typedefs.i
index 877539bfb..bd7e2b220 100644
--- a/Examples/test-suite/cpp0x_template_typedefs.i
+++ b/Examples/test-suite/cpp0x_template_typedefs.i
@@ -1,4 +1,4 @@
-/* This testcase checks whether SWIG correctly parses the template aliasing. */
+/* This testcase checks whether SWIG correctly parses alias templates. */
%module cpp0x_template_typedefs
%inline %{
@@ -12,6 +12,7 @@ class SomeType {
template< typename T2 >
using TypedefName = SomeType;
+// type aliasing
typedef void (*PFD)(double); // Old style
using PF = void (*)(double); // New introduced syntax
%}
diff --git a/Source/CParse/parser.y b/Source/CParse/parser.y
index effe11ccc..f601aab9f 100644
--- a/Source/CParse/parser.y
+++ b/Source/CParse/parser.y
@@ -3098,9 +3098,9 @@ c_declaration : c_decl {
appendChild($$,firstChild($5));
}
}
- | c_lambda_decl { Swig_warning(WARN_CPP11_LAMBDA, cparse_file, cparse_line,"SWIG doesn't produce wrapper code for lambda expressions and closures yet.\n"); $$ = $1; }
- | USING idcolon EQUAL { skip_decl(); Swig_warning(WARN_CPP11_ALIAS_DECLARATION, cparse_file, cparse_line,"SWIG doesn't support the 'using' keyword in type aliasing yet.\n"); $$ = 0; }
- | TEMPLATE LESSTHAN template_parms GREATERTHAN USING idcolon EQUAL { skip_decl(); Swig_warning(WARN_CPP11_ALIAS_TEMPLATE, cparse_file, cparse_line,"SWIG doesn't support the 'using' keyword in template aliasing yet.\n"); $$ = 0; }
+ | c_lambda_decl { Swig_warning(WARN_CPP11_LAMBDA, cparse_file, cparse_line,"Lambda expressions and closures are not fully supported yet.\n"); $$ = $1; }
+ | USING idcolon EQUAL { skip_decl(); Swig_warning(WARN_CPP11_ALIAS_DECLARATION, cparse_file, cparse_line,"The 'using' keyword in type aliasing is not fully supported yet.\n"); $$ = 0; }
+ | TEMPLATE LESSTHAN template_parms GREATERTHAN USING idcolon EQUAL { skip_decl(); Swig_warning(WARN_CPP11_ALIAS_TEMPLATE, cparse_file, cparse_line,"The 'using' keyword in template aliasing is not fully supported yet.\n"); $$ = 0; }
;
/* ------------------------------------------------------------