From afa12be71568a9b99740e392e6cac82045a5ad88 Mon Sep 17 00:00:00 2001
From: Joao Matos <joao@tritao.eu>
Date: Fri, 24 Jun 2016 16:35:11 +0100
Subject: [PATCH] Added support for C++11 type-alias type declarations.

In the future, we might want to add a TypeAliasDecl AST node,
but for now this simple approach is enough for typedef-like using declarations.

Won't be enough to support partial template using syntax (TypeAliasTemplateDecl).

Partial fix for https://github.com/mono/CppSharp/issues/664.
---
 src/CppParser/Parser.cpp     | 3 ++-
 tests/Common/Common.Tests.cs | 2 ++
 tests/Common/Common.cpp      | 4 ++++
 tests/Common/Common.h        | 3 +++
 4 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/CppParser/Parser.cpp b/src/CppParser/Parser.cpp
index 9c301e65..8addf689 100644
--- a/src/CppParser/Parser.cpp
+++ b/src/CppParser/Parser.cpp
@@ -3184,8 +3184,9 @@ Declaration* Parser::WalkDeclaration(const clang::Decl* D,
         break;
     }
     case Decl::Typedef:
+    case Decl::TypeAlias:
     {
-        auto TD = cast<clang::TypedefDecl>(D);
+        auto TD = cast<clang::TypedefNameDecl>(D);
 
         auto NS = GetNamespace(TD);
         auto Name = GetDeclName(TD);
diff --git a/tests/Common/Common.Tests.cs b/tests/Common/Common.Tests.cs
index 7b01ed3a..04e6aa04 100644
--- a/tests/Common/Common.Tests.cs
+++ b/tests/Common/Common.Tests.cs
@@ -383,6 +383,8 @@ public class CommonTests : GeneratorTestFixture
     {
         var ret = common.Function();
         Assert.That(ret, Is.EqualTo(5));
+
+        common.FuncWithTypeAlias(0);
     }
 
     [Test]
diff --git a/tests/Common/Common.cpp b/tests/Common/Common.cpp
index c972c89c..715762d4 100644
--- a/tests/Common/Common.cpp
+++ b/tests/Common/Common.cpp
@@ -618,3 +618,7 @@ HasProtectedEnum::HasProtectedEnum()
 void HasProtectedEnum::function(ProtectedEnum param)
 {
 }
+
+void FuncWithTypeAlias(custom_int_t i)
+{
+}
diff --git a/tests/Common/Common.h b/tests/Common/Common.h
index fe967f44..437c073e 100644
--- a/tests/Common/Common.h
+++ b/tests/Common/Common.h
@@ -1103,6 +1103,9 @@ protected:
     void function(ProtectedEnum param);
 };
 
+using custom_int_t = int;
+void FuncWithTypeAlias(custom_int_t i);
+
 struct TestsTypes
 {
     int(*FunctionNoProto)();