[CFrontend][Cleanup] Pass whole decl to CTypesDecl.do_record_declaration

Summary:
see title. It will make number of arguments
less ridiculous and make it easier to share C/C++ structs.
Another diff that adds base class information for C++ will
follow.
This change is big enough to deserve separate diff

infer/src/clang/cFrontend.ml

@@ -35,11 +35,9 @@ let rec translate_one_declaration tenv cg cfg namespace parent_dec dec =
       CTypes_decl.do_typedef_declaration tenv namespace
         decl_info name opt_type typedef_decl_info
   (* Currently C/C++ record decl treated in the same way *)
-  | CXXRecordDecl (decl_info, name_info, opt_type, _, decl_list, decl_context_info, record_decl_info, _)
-  | RecordDecl (decl_info, name_info, opt_type, _, decl_list, decl_context_info, record_decl_info) ->
-      let record_name = name_info.Clang_ast_t.ni_name in
-      CTypes_decl.do_record_declaration tenv namespace
-        decl_info record_name opt_type decl_list decl_context_info record_decl_info;
+  | CXXRecordDecl (_, _, _, _, decl_list, _, _, _)
+  | RecordDecl (_, _, _, _, decl_list, _, _) ->
+      CTypes_decl.add_types_from_decl_to_tenv tenv namespace dec;
       let method_decls = CTypes_decl.get_method_decls dec decl_list in
       let tranlate_method (parent, decl) =
         translate_one_declaration tenv cg cfg namespace parent decl in

infer/src/clang/cTypes_decl.ml

@@ -195,23 +195,19 @@ and do_typedef_declaration tenv namespace decl_info name opt_type typedef_decl_i
 
 and get_struct_fields tenv record_name namespace decl_list =
   let open Clang_ast_t in
-  match decl_list with
-  | [] -> []
-  | FieldDecl(decl_info, name_info, qual_type, field_decl_info):: decl_list' ->
-      let field_name = name_info.Clang_ast_t.ni_name in
-      Printing.log_out "  ...Defining field '%s'.\n" field_name;
-      let id = General_utils.mk_class_field_name record_name field_name in
-      let typ = qual_type_to_sil_type tenv qual_type in
-      let annotation_items = [] in (* For the moment we don't use them*)
-      (id, typ, annotation_items):: get_struct_fields tenv record_name namespace decl_list'
-  | CXXRecordDecl (decl_info, name, opt_type, _, decl_list, decl_context_info, record_decl_info, _)
-    :: decl_list'
-  (* C++/C Records treated in the same way*)
-  | RecordDecl (decl_info, name, opt_type, _, decl_list, decl_context_info, record_decl_info)
-    :: decl_list'->
-      do_record_declaration tenv namespace decl_info name.Clang_ast_t.ni_name opt_type decl_list decl_context_info record_decl_info;
-      get_struct_fields tenv record_name namespace decl_list'
-  | _ :: decl_list' -> get_struct_fields tenv record_name namespace decl_list'
+  let do_one_decl decl = match decl with
+    | FieldDecl (_, name_info, qual_type, _) ->
+        let field_name = name_info.Clang_ast_t.ni_name in
+        Printing.log_out "  ...Defining field '%s'.\n" field_name;
+        let id = General_utils.mk_class_field_name record_name field_name in
+        let typ = qual_type_to_sil_type tenv qual_type in
+        let annotation_items = [] in (* For the moment we don't use them*)
+        [(id, typ, annotation_items)]
+    | CXXRecordDecl _ | RecordDecl _ ->
+        (* C++/C Records treated in the same way*)
+        add_types_from_decl_to_tenv tenv namespace decl; []
+    | _ -> [] in
+  list_flatten (list_map do_one_decl decl_list)
 
 and get_class_methods tenv class_name namespace decl_list =
   let process_method_decl = function
@@ -224,17 +220,26 @@ and get_class_methods tenv class_name namespace decl_list =
   (* poor mans list_filter_map *)
   list_flatten_options (list_map process_method_decl decl_list)
 
-and do_record_declaration tenv namespace decl_info name opt_type decl_list decl_context_info record_decl_info =
-  Printing.log_out "ADDING: RecordDecl for '%s'" name;
-  Printing.log_out " pointer= '%s'\n" decl_info.Clang_ast_t.di_pointer;
-  if not record_decl_info.Clang_ast_t.rdi_is_complete_definition then
-    Printing.log_err "   ...Warning, definition incomplete. The full definition will probably be later \n@.";
-  let typ = get_declaration_type tenv namespace decl_info name opt_type decl_list decl_context_info record_decl_info in
+and add_types_from_decl_to_tenv tenv namespace decl =
+  let typ = get_declaration_type tenv namespace decl in
   let typ = expand_structured_type tenv typ in
   add_struct_to_tenv tenv typ
 
 (* For a record declaration it returns/constructs the type *)
-and get_declaration_type tenv namespace decl_info n opt_type decl_list decl_context_info record_decl_info =
+and get_declaration_type tenv namespace decl =
+  let open Clang_ast_t in
+  let n, opt_type, decl_list = match decl with
+    | CXXRecordDecl (decl_info, name_info, opt_type, _, decl_list, _, record_decl_info, _)
+    | RecordDecl (decl_info, name_info, opt_type, _, decl_list, _, record_decl_info) ->
+        let ptr = decl_info.Clang_ast_t.di_pointer in
+        let name = name_info.Clang_ast_t.ni_name in
+        Printing.log_out "ADDING: RecordDecl for '%s'" name;
+        Printing.log_out " pointer= '%s'\n" ptr;
+        if not record_decl_info.Clang_ast_t.rdi_is_complete_definition then
+          Printing.log_err "   ...Warning, definition incomplete. The full definition will probably be later \n@.";
+        name, opt_type, decl_list
+    | _ -> assert false in
+
   let ns_suffix = Ast_utils.namespace_to_string namespace in
   let n = ns_suffix^n in
   let name_str = get_record_name opt_type in
@@ -253,7 +258,7 @@ and get_declaration_type tenv namespace decl_info n opt_type decl_list decl_cont
       | _ -> Sil.Struct) in
   let name = Some (Mangled.from_string name_str) in
   let methods_list = get_class_methods tenv name_str namespace decl_list in (* C++ methods only *)
-  let superclass_list = [] in (* No super class for structs *)
+  let superclass_list = [] in
   let item_annotation = Sil.item_annotation_empty in  (* No annotations for struts *)
   Sil.Tstruct
     (non_static_fields, static_fields, csu, name, superclass_list, methods_list, item_annotation)
@@ -268,12 +273,8 @@ and add_late_defined_record tenv namespace typename =
       let rec scan decls =
         match decls with
         | [] -> false
-        | CXXRecordDecl
-            (decl_info, record_name, opt_type, _, decl_list, decl_context_info, record_decl_info, _)
-          :: decls'
-        | RecordDecl
-            (decl_info, record_name, opt_type, _, decl_list, decl_context_info, record_decl_info)
-          :: decls' ->
+        | (CXXRecordDecl (_, _, opt_type, _, _, _, record_decl_info, _) as d) :: decls'
+        | (RecordDecl (_, _, opt_type, _, _, _, record_decl_info) as d) :: decls' ->
             (match opt_type with
              | `Type t ->
                  (* the string t contains the name of the type preceded by the word struct. *)
@@ -284,8 +285,7 @@ and add_late_defined_record tenv namespace typename =
                      Sil.typename_equal typename pot_union_type) &&
                     record_decl_info.Clang_ast_t.rdi_is_complete_definition then (
                    Printing.log_out "!!!! Adding late-defined record '%s'\n" t;
-                   do_record_declaration tenv namespace decl_info record_name.Clang_ast_t.ni_name opt_type decl_list
-                     decl_context_info record_decl_info;
+                   add_types_from_decl_to_tenv tenv namespace d;
                    true)
                  else scan decls'
              | _ -> scan decls')

infer/src/clang/cTypes_decl.mli

@@ -9,9 +9,7 @@
 
 (** Processes types and record declarations by adding them to the tenv *)
 
-val get_declaration_type : Sil.tenv -> string option -> Clang_ast_t.decl_info -> string ->
-  Clang_ast_t.opt_type -> Clang_ast_t.decl list -> Clang_ast_t.decl_context_info ->
-  Clang_ast_t.record_decl_info -> Sil.typ
+val get_declaration_type : Sil.tenv -> string option -> Clang_ast_t.decl -> Sil.typ
 
 val add_struct_to_tenv : Sil.tenv -> Sil.typ -> unit
 
@@ -22,9 +20,7 @@ val get_method_decls : Clang_ast_t.decl -> Clang_ast_t.decl list -> (Clang_ast_t
 val do_typedef_declaration : Sil.tenv -> string option -> Clang_ast_t.decl_info -> string ->
   Clang_ast_t.opt_type -> Clang_ast_t.typedef_decl_info -> unit
 
-val do_record_declaration : Sil.tenv -> string option -> Clang_ast_t.decl_info -> string ->
-  Clang_ast_t.opt_type -> Clang_ast_t.decl list -> Clang_ast_t.decl_context_info ->
-  Clang_ast_t.record_decl_info -> unit
+val add_types_from_decl_to_tenv : Sil.tenv -> string option -> Clang_ast_t.decl -> unit
 
 val parse_func_type : string -> string -> (Sil.typ * Sil.typ list) option
 

infer/src/clang/cVar_decl.ml

@@ -158,10 +158,8 @@ and get_variables_decls context (decl_list : Clang_ast_t.decl list) : unit =
          | _ ->
              CContext.LocalVars.add_local_var context name typ decl_info.Clang_ast_t.di_pointer
                (CFrontend_utils.General_utils.is_static_var var_decl_info))
-    | CXXRecordDecl (di, n_info, ot, _, dl, dci, rdi, _)
-    | RecordDecl (di, n_info, ot, _, dl, dci, rdi) ->
-        let typ = CTypes_decl.get_declaration_type context.CContext.tenv context.CContext.namespace
-            di n_info.Clang_ast_t.ni_name ot dl dci rdi in
+    | CXXRecordDecl _ | RecordDecl _ ->
+        let typ = CTypes_decl.get_declaration_type context.CContext.tenv context.CContext.namespace decl in
         CTypes_decl.add_struct_to_tenv context.CContext.tenv typ
     | TypedefDecl (decl_info, name_info, opt_type, _, typedef_decl_info) ->
         CTypes_decl.do_typedef_declaration context.CContext.tenv context.CContext.namespace