Output: Handle using declarations and directives

Honor both for purposes of the start node lookup.  Walk through using
declarations (Clang UsingShadowDecl) to output the referenced
declarations in their original context.  Do not include names brought
into a context by a using declaration or directive in the members of
that context.

4 files changed, 18 insertions, 0 deletions

diff --git a/test/input/using-declaration-ns.cxx b/test/input/using-declaration-ns.cxx
new file mode 100644
index 0000000..1629a8b
--- /dev/null
+++ b/test/input/using-declaration-ns.cxx
@@ -0,0 +1,4 @@
+class A;
+namespace start {
+  using ::A;
+}
diff --git a/test/input/using-declaration-start.cxx b/test/input/using-declaration-start.cxx
new file mode 100644
index 0000000..9d732d0
--- /dev/null
+++ b/test/input/using-declaration-start.cxx
@@ -0,0 +1,4 @@
+namespace N {
+  class start;
+}
+using N::start;
diff --git a/test/input/using-directive-ns.cxx b/test/input/using-directive-ns.cxx
new file mode 100644
index 0000000..937b851
--- /dev/null
+++ b/test/input/using-directive-ns.cxx
@@ -0,0 +1,6 @@
+namespace N {
+  class A;
+}
+namespace start {
+  using namespace N;
+}
diff --git a/test/input/using-directive-start.cxx b/test/input/using-directive-start.cxx
new file mode 100644
index 0000000..1e69a1b
--- /dev/null
+++ b/test/input/using-directive-start.cxx
@@ -0,0 +1,4 @@
+namespace A {
+  class start;
+}
+using namespace A;