Infrastructure for a language-neutral namespace declaration.

Altered the once-deprecated "namespace" directive in .thrift files
to take two identifiers: the language and the namespace.
They are stored in a map inside of the program object.
Future changes will convert specific generators to use this map
and deprecate the old language-specific tokens.


git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@665512 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/compiler/cpp/src/parse/t_program.h b/compiler/cpp/src/parse/t_program.h
index 7b369d6..d788e2b 100644
--- a/compiler/cpp/src/parse/t_program.h
+++ b/compiler/cpp/src/parse/t_program.h
@@ -145,6 +145,19 @@
     }
   }
 
+  // Language neutral namespace / packaging
+  void set_namespace(std::string language, std::string name_space) {
+    namespaces_[language] = name_space;
+  }
+
+  std::string get_namespace(std::string language) const {
+    std::map<std::string, std::string>::const_iterator iter = namespaces_.find(language);
+    if (iter == namespaces_.end()) {
+      return std::string();
+    }
+    return iter->second;
+  }
+
   // Language specific namespace / packaging
 
   void set_cpp_namespace(std::string cpp_namespace) {
@@ -275,6 +288,9 @@
   std::vector<t_struct*>  xceptions_;
   std::vector<t_service*> services_;
 
+  // Dynamic namespaces
+  std::map<std::string, std::string> namespaces_;
+
   // C++ namespace
   std::string cpp_namespace_;