Pretty closing type parameters.

Fixes: 171946195
Test: aidl_unittests
Change-Id: I60fb8b66b7c0f0451c180fd833a99aba97d840eb
diff --git a/parser.cpp b/parser.cpp
index f2b9c55..b96ba3a 100644
--- a/parser.cpp
+++ b/parser.cpp
@@ -48,6 +48,19 @@
   return parser;
 }
 
+void Parser::SetTypeParameters(AidlTypeSpecifier* type,
+                               std::vector<std::unique_ptr<AidlTypeSpecifier>>* type_args) {
+  if (type->IsArray()) {
+    AIDL_ERROR(type) << "Must specify type parameters (<>) before array ([]).";
+    AddError();
+  }
+  if (!type->SetTypeParameters(type_args)) {
+    AIDL_ERROR(type) << "Can only specify one set of type parameters.";
+    AddError();
+    delete type_args;
+  }
+}
+
 bool Parser::Resolve() {
   bool success = true;
   for (AidlTypeSpecifier* typespec : unresolved_typespecs_) {