Introduce integer constants

We can now declare a "const int" variable in an AIDL interface, in
addition to methods. These constants will become static members of the
interface/base class in the generated code.

Change-Id: I6b690ecbbe2acae37abb106510e42283f0753f26
Test: Unit and integration tests updated and pass
Bug: 23600061
Signed-off-by: Casey Dahlin <sadmac@google.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/generate_cpp.cpp b/generate_cpp.cpp
index 9307c28..001ea44 100644
--- a/generate_cpp.cpp
+++ b/generate_cpp.cpp
@@ -697,6 +697,12 @@ unique_ptr<Document> BuildInterfaceHeader(const TypeNamespace& types,
       "DECLARE_META_INTERFACE",
       ArgList{vector<string>{ClassName(interface, ClassNames::BASE)}}}});
 
+  for (const auto& constant : interface.GetConstants()) {
+    unique_ptr<ConstDecl> declaration{
+        new ConstDecl(constant->GetName(), constant->GetValue())};
+    if_class->AddPublic(std::move(declaration));
+  }
+
   unique_ptr<Enum> call_enum{new Enum{"Call"}};
   for (const auto& method : interface.GetMethods()) {
     // Each method gets an enum entry and pure virtual declaration.