Fix type lookup in the presence of using directives and using declarations

Fix some cases of type lookup failure via a combination of both using directives and
using declarations resulting in C++ code that did not compile as the generated type was
not fully qualified for use in the global namespace. Example below:

    namespace Space5 {
      namespace SubSpace5 {
        namespace SubSubSpace5 {
          struct F {};
        }
      }
      using namespace SubSpace5;
      using SubSubSpace5::F;
      void func(SubSubSpace5::F f);
    }

Examples/test-suite/class_scope_namespace.i

@@ -73,8 +73,7 @@ namespace Space5 {
   struct SubSubSpace5::F {
     void ff(Space5::SubSpace5::SubSubSpace5::F, SubSpace5::SubSubSpace5::F, SubSubSpace5::F, F) {}
   };
-// needs fixing
-  void fff(Space5::SubSpace5::SubSubSpace5::F, SubSpace5::SubSubSpace5::F, /*SubSubSpace5::F,*/ F) {}
+  void fff(Space5::SubSpace5::SubSubSpace5::F, SubSpace5::SubSubSpace5::F, SubSubSpace5::F, F) {}
 }
 
 namespace Space6 {

Examples/test-suite/common.mk

@@ -292,6 +292,7 @@ CPP_TEST_CASES += \
 	multiple_inheritance_shared_ptr \
 	name_cxx \
 	name_warnings \
+	namespace_chase \
 	namespace_class \
 	namespace_enum \
 	namespace_extend \

Examples/test-suite/java/class_scope_namespace_runme.java

@@ -47,7 +47,7 @@ public class class_scope_namespace_runme {
     class_scope_namespace.ccc(c, c);
     class_scope_namespace.ddd(d, d, d);
     class_scope_namespace.eee(e, e, e);
-    class_scope_namespace.fff(f, f, f);
+    class_scope_namespace.fff(f, f, f, f);
     class_scope_namespace.ggg(g, g);
     class_scope_namespace.hhh(h);
     class_scope_namespace.iii(i, i);

Examples/test-suite/java/namespace_chase_runme.java

@@ -0,0 +1,26 @@
+
+import namespace_chase.*;
+
+public class namespace_chase_runme {
+
+  static {
+    try {
+      System.loadLibrary("namespace_chase");
+    } catch (UnsatisfiedLinkError e) {
+      System.err.println("Native code library failed to load. See the chapter on Dynamic Linking Problems in the SWIG Java documentation for help.\n" + e);
+      System.exit(1);
+    }
+  }
+
+  public static void main(String argv[]) 
+  {
+    Struct1A s1a = new Struct1A();
+    Struct1B s1b = new Struct1B();
+    Struct1C s1c = new Struct1C();
+
+    namespace_chase.sss3a(s1a, s1b, s1c);
+    namespace_chase.sss3b(s1a, s1b, s1c);
+    // needs fixing
+//    namespace_chase.sss3c(s1a, s1b, s1c);
+  }
+}

Examples/test-suite/namespace_chase.i

@@ -0,0 +1,36 @@
+%module namespace_chase
+
+%inline %{
+  namespace Space1A {
+    struct Struct1A {};
+    namespace Space1B {
+      struct Struct1B {};
+      namespace Space1C {
+        struct Struct1C {};
+      }
+    }
+  }
+  namespace Space2A {
+    using namespace Space1A;
+    namespace Space2B {
+      using namespace Space1B;
+      namespace Space2C {
+        using namespace Space1C;
+      }
+    }
+  }
+  namespace Space3 {
+    using namespace Space2A;
+    void sss3a(Space1A::Struct1A, Space1A::Space1B::Struct1B, Space1A::Space1B::Space1C::Struct1C) {}
+    void sss3b(Struct1A, Space1B::Struct1B, Space1B::Space1C::Struct1C) {}
+    // To fix: the last two parameters below fail and result in SWIGTYPE_ types instead of proxy classes
+    void sss3c(Space2A::Struct1A, Space2A::Space1B::Struct1B, Space2A::Space1B::Space1C::Struct1C) {}
+  }
+  namespace Space4 {
+    using namespace Space2A;
+    using namespace Space2A::Space2B;
+    using namespace Space2A::Space2B::Space2C;
+    void sss4a(Struct1A, Struct1B, Space2C::Struct1C) {}
+    void sss4b(Struct1A, Struct1B, Struct1C) {}
+  }
+%}