add constructor info to c++ methods

Summary:
Store more information inside Procname.objc_cpp type: replace mangling info
with "kind" info, which also contains mangling info when appropriate.

Reviewed By: akotulski

Differential Revision: D3580283

fbshipit-source-id: b1197ed

infer/src/IR/Procname.re

@@ -39,9 +39,16 @@ type java = {
 /** Type of c procedure names. */
 type c = (string, option string);
 
+type objc_cpp_method_kind =
+  | CPPMethod of (option string) /** with mangling */
+  | CPPConstructor of (option string) /** with mangling */
+  | ObjCInstanceMethod
+  | ObjCInternalMethod
+  | ObjCClassMethod;
+
 
 /** Type of Objective C and C++ procedure names: method signatures. */
-type objc_cpp = {class_name: string, method_name: string, mangled: option string};
+type objc_cpp = {class_name: string, method_name: string, kind: objc_cpp_method_kind};
 
 
 /** Type of Objective C block names. */
@@ -55,19 +62,11 @@ type t = | Java of java | C of c | ObjC_Cpp of objc_cpp | Block of block;
 /** Level of verbosity of some to_string functions. */
 type detail_level = | Verbose | Non_verbose | Simple;
 
-type objc_method_kind = | Instance_objc_method | Class_objc_method;
-
-let mangled_of_objc_method_kind kind =>
-  switch kind {
-  | Instance_objc_method => Some "instance"
-  | Class_objc_method => Some "class"
-  };
-
 let objc_method_kind_of_bool is_instance =>
   if is_instance {
-    Instance_objc_method
+    ObjCInstanceMethod
   } else {
-    Class_objc_method
+    ObjCClassMethod
   };
 
 let empty_block = Block "";
@@ -156,12 +155,21 @@ let java_compare (j1: java) (j2: java) =>
     next java_return_type_compare j1.return_type j2.return_type |>
     next method_kind_compare j1.kind j2.kind;
 
-let c_function_mangled_compare mangled1 mangled2 =>
-  switch (mangled1, mangled2) {
-  | (Some _, None) => 1
-  | (None, Some _) => (-1)
-  | (None, None) => 0
-  | (Some mangled1, Some mangled2) => string_compare mangled1 mangled2
+let objc_cpp_method_kind_compare k1 k2 =>
+  switch (k1, k2) {
+  | (CPPMethod mangled1, CPPMethod mangled2) => mangled_compare mangled1 mangled2
+  | (CPPMethod _, _) => (-1)
+  | (_, CPPMethod _) => 1
+  | (CPPConstructor mangled1, CPPConstructor mangled2) => mangled_compare mangled1 mangled2
+  | (CPPConstructor _, _) => (-1)
+  | (_, CPPConstructor _) => 1
+  | (ObjCClassMethod, ObjCClassMethod) => 0
+  | (ObjCClassMethod, _) => (-1)
+  | (_, ObjCClassMethod) => 1
+  | (ObjCInstanceMethod, ObjCInstanceMethod) => 0
+  | (ObjCInstanceMethod, _) => (-1)
+  | (_, ObjCInstanceMethod) => 1
+  | (ObjCInternalMethod, ObjCInternalMethod) => 0
   };
 
 
@@ -169,7 +177,7 @@ let c_function_mangled_compare mangled1 mangled2 =>
 let c_meth_sig_compare osig1 osig2 =>
   string_compare osig1.method_name osig2.method_name |>
     next string_compare osig1.class_name osig2.class_name |>
-    next c_function_mangled_compare osig1.mangled osig2.mangled;
+    next objc_cpp_method_kind_compare osig1.kind osig2.kind;
 
 
 /** Given a package.class_name string, it looks for the latest dot and split the string
@@ -190,10 +198,10 @@ let java class_name return_type method_name parameters kind => {
 
 
 /** Create an objc procedure name from a class_name and method_name. */
-let objc_cpp class_name method_name mangled => {class_name, method_name, mangled};
+let objc_cpp class_name method_name kind => {class_name, method_name, kind};
 
 let get_default_objc_class_method objc_class => {
-  let objc_cpp = objc_cpp objc_class "__find_class_" (Some "internal");
+  let objc_cpp = objc_cpp objc_class "__find_class_" ObjCInternalMethod;
   ObjC_Cpp objc_cpp
 };
 
@@ -421,15 +429,22 @@ let java_is_vararg =
     }
   | _ => false;
 
-let is_obj_constructor method_name => method_name == "new" || string_is_prefix "init" method_name;
+let is_objc_constructor method_name => method_name == "new" || string_is_prefix "init" method_name;
 
+let is_objc_kind =
+  fun
+  | ObjCClassMethod
+  | ObjCInstanceMethod
+  | ObjCInternalMethod => true
+  | _ => false;
 
-/** [is_constructor pname] returns true if [pname] is a constructor
-    TODO: add case for C++ */
+
+/** [is_constructor pname] returns true if [pname] is a constructor */
 let is_constructor =
   fun
   | Java js => js.method_name == "<init>"
-  | ObjC_Cpp name => is_obj_constructor name.method_name
+  | ObjC_Cpp {kind: CPPConstructor _} => true
+  | ObjC_Cpp {kind, method_name} when is_objc_kind kind => is_objc_constructor method_name
   | _ => false;
 
 let is_objc_dealloc method_name => method_name == "dealloc";
@@ -486,9 +501,28 @@ let c_method_to_string osig detail_level =>
   | Non_verbose => osig.class_name ^ "_" ^ osig.method_name
   | Verbose =>
     let m_str =
-      switch osig.mangled {
+      switch osig.kind {
+      | CPPMethod m =>
+        "(" ^
+          (
+            switch m {
             | None => ""
-      | Some s => "{" ^ s ^ "}"
+            | Some s => s
+            }
+          ) ^
+          ")"
+      | CPPConstructor m =>
+        "{" ^
+          (
+            switch m {
+            | None => ""
+            | Some s => s
+            }
+          ) ^
+          "}"
+      | ObjCClassMethod => "class"
+      | ObjCInstanceMethod => "instance"
+      | ObjCInternalMethod => "internal"
       };
     osig.class_name ^ "_" ^ osig.method_name ^ m_str
   };

infer/src/IR/Procname.rei

@@ -40,9 +40,12 @@ type method_kind =
   | Static /* in Java, procedures called with invokestatic */
   | Non_Static /* in Java, procedures called with invokevirtual, invokespecial, and invokeinterface */;
 
-type objc_method_kind =
-  | Instance_objc_method /* for instance methods in ObjC */
-  | Class_objc_method /* for class methods in ObjC */;
+type objc_cpp_method_kind =
+  | CPPMethod of (option string) /** with mangling */
+  | CPPConstructor of (option string) /** with mangling */
+  | ObjCInstanceMethod
+  | ObjCInternalMethod
+  | ObjCClassMethod;
 
 
 /** Hash tables with proc names as keys. */
@@ -98,7 +101,7 @@ let is_c_method: t => bool;
 
 
 /** Check if this is a constructor method in Objective-C. */
-let is_obj_constructor: string => bool;
+let is_objc_constructor: string => bool;
 
 
 /** Check if this is a constructor. */
@@ -134,12 +137,8 @@ let java_replace_return_type: java => java_type => java;
 let mangled_objc_block: string => t;
 
 
-/** Mangled string for method types. */
-let mangled_of_objc_method_kind: objc_method_kind => option string;
-
-
 /** Create an objc procedure name from a class_name and method_name. */
-let objc_cpp: string => string => option string => objc_cpp;
+let objc_cpp: string => string => objc_cpp_method_kind => objc_cpp;
 
 let get_default_objc_class_method: string => t;
 
@@ -149,7 +148,7 @@ let objc_cpp_get_class_name: objc_cpp => string;
 
 
 /** Create ObjC method type from a bool is_instance. */
-let objc_method_kind_of_bool: bool => objc_method_kind;
+let objc_method_kind_of_bool: bool => objc_cpp_method_kind;
 
 
 /** Return the class name of a java procedure name. */

infer/src/backend/modelBuiltins.ml

@@ -1170,7 +1170,7 @@ let execute_objc_alloc_no_fail
   SymExec.instrs tenv pdesc [alloc_instr] symb_state
 
 let mk_objc_class_method class_name method_name =
-  let method_kind = Procname.mangled_of_objc_method_kind Procname.Class_objc_method in
+  let method_kind = Procname.ObjCClassMethod in
   (Procname.ObjC_Cpp
      (Procname.objc_cpp class_name method_name method_kind))
 

infer/src/backend/taint.ml

@@ -273,9 +273,8 @@ let java_method_to_procname java_method =
 (* turn string specificiation of an objc method into a procname *)
 let objc_method_to_procname objc_method =
   let method_kind = Procname.objc_method_kind_of_bool (not objc_method.is_static) in
-  let mangled = Procname.mangled_of_objc_method_kind method_kind in
   Procname.ObjC_Cpp
-    (Procname.objc_cpp objc_method.classname objc_method.method_name mangled)
+    (Procname.objc_cpp objc_method.classname objc_method.method_name method_kind)
 
 let taint_spec_to_taint_info taint_spec =
   let taint_source =

infer/src/clang/cFrontend_checkers.ml

@@ -233,7 +233,7 @@ let direct_atomic_property_access_warning method_decl stmt_info ivar_decl_ref =
            Last two conditions avoids false positives *)
         is_ivar_atomic (get_ivar_attributes d)
         && not (is_method_property_accessor_of_ivar method_decl ivar_pointer)
-        && not (Procname.is_obj_constructor method_name)
+        && not (Procname.is_objc_constructor method_name)
         && not (Procname.is_objc_dealloc method_name) in
       if condition then
         Some {

infer/src/clang/cFrontend_utils.ml

@@ -632,13 +632,17 @@ struct
       Procname.C (Procname.c name mangled)
 
   let mk_procname_from_objc_method class_name method_name method_kind =
-    let mangled = Procname.mangled_of_objc_method_kind method_kind in
     Procname.ObjC_Cpp
-      (Procname.objc_cpp class_name method_name mangled)
-
-  let mk_procname_from_cpp_method class_name method_name mangled_opt =
+      (Procname.objc_cpp class_name method_name method_kind)
+
+  let mk_procname_from_cpp_method class_name method_name ?meth_decl mangled =
+    let method_kind = match meth_decl with
+      | Some (Clang_ast_t.CXXConstructorDecl _) ->
+          Procname.CPPConstructor mangled
+      | _ ->
+          Procname.CPPMethod mangled in
     Procname.ObjC_Cpp
-      (Procname.objc_cpp class_name method_name mangled_opt)
+      (Procname.objc_cpp class_name method_name method_kind)
 
   let get_objc_method_name name_info mdi class_name =
     let method_name = name_info.Clang_ast_t.ni_name in
@@ -661,7 +665,7 @@ struct
         let mangled = get_mangled_method_name fdi mdi in
         let method_name = Ast_utils.get_unqualified_name name_info in
         let class_name = Ast_utils.get_class_name_from_member name_info in
-        mk_procname_from_cpp_method class_name method_name mangled
+        mk_procname_from_cpp_method class_name method_name ~meth_decl mangled
     | ObjCMethodDecl (_, name_info, mdi) ->
         let class_name = Ast_utils.get_class_name_from_member name_info in
         get_objc_method_name name_info mdi class_name

infer/src/clang/cFrontend_utils.mli

@@ -199,7 +199,7 @@ sig
 
   val replicate: int -> 'a -> 'a list
 
-  val mk_procname_from_objc_method : string -> string -> Procname.objc_method_kind -> Procname.t
+  val mk_procname_from_objc_method : string -> string -> Procname.objc_cpp_method_kind -> Procname.t
 
   val mk_procname_from_function : string -> (Clang_ast_t.decl_info * Clang_ast_t.function_decl_info)
       option -> Config.clang_lang -> Procname.t
@@ -207,7 +207,8 @@ sig
   val get_mangled_method_name : Clang_ast_t.function_decl_info ->
     Clang_ast_t.cxx_method_decl_info -> string option
 
-  val mk_procname_from_cpp_method : string -> string -> string option-> Procname.t
+  val mk_procname_from_cpp_method :
+    string -> string -> ?meth_decl:Clang_ast_t.decl -> string option -> Procname.t
 
   val procname_of_decl : Clang_ast_t.decl -> Procname.t
 

infer/src/clang/cTrans_models.ml

@@ -145,7 +145,7 @@ let get_predefined_ms_stringWithUTF8String class_name method_name mk_procname la
     && method_name = CFrontend_config.string_with_utf8_m in
   let id_type = Ast_expressions.create_id_type in
   let args = [(Mangled.from_string "x", Ast_expressions.create_char_star_type)] in
-  get_predefined_ms_method condition class_name method_name Procname.Class_objc_method
+  get_predefined_ms_method condition class_name method_name Procname.ObjCClassMethod
     mk_procname lang args id_type [] None
 
 let get_predefined_ms_retain_release method_name mk_procname lang =
@@ -156,7 +156,7 @@ let get_predefined_ms_retain_release method_name mk_procname lang =
   let class_name = CFrontend_config.nsobject_cl in
   let class_type = Ast_expressions.create_class_type (class_name, `OBJC) in
   let args = [(Mangled.from_string CFrontend_config.self, class_type)] in
-  get_predefined_ms_method condition class_name method_name Procname.Instance_objc_method
+  get_predefined_ms_method condition class_name method_name Procname.ObjCInstanceMethod
     mk_procname lang args return_type [] (get_builtinname method_name)
 
 let get_predefined_ms_autoreleasepool_init class_name method_name mk_procname lang =
@@ -164,7 +164,7 @@ let get_predefined_ms_autoreleasepool_init class_name method_name mk_procname la
     method_name = CFrontend_config.init
     && class_name = CFrontend_config.nsautorelease_pool_cl in
   let class_type = Ast_expressions.create_class_type (class_name, `OBJC) in
-  get_predefined_ms_method condition class_name method_name Procname.Instance_objc_method
+  get_predefined_ms_method condition class_name method_name Procname.ObjCInstanceMethod
     mk_procname lang [(Mangled.from_string CFrontend_config.self, class_type)]
     Ast_expressions.create_void_type [] None
 
@@ -174,7 +174,7 @@ let get_predefined_ms_nsautoreleasepool_release class_name method_name mk_procna
     && class_name = CFrontend_config.nsautorelease_pool_cl in
   let class_type = Ast_expressions.create_class_type (class_name, `OBJC) in
   let args = [(Mangled.from_string CFrontend_config.self, class_type)] in
-  get_predefined_ms_method condition class_name method_name Procname.Instance_objc_method
+  get_predefined_ms_method condition class_name method_name Procname.ObjCInstanceMethod
     mk_procname lang args Ast_expressions.create_void_type
     [] (Some ModelBuiltins.__objc_release_autorelease_pool)
 
@@ -182,7 +182,7 @@ let get_predefined_ms_is_kind_of_class class_name method_name mk_procname lang =
   let condition = method_name = CFrontend_config.is_kind_of_class in
   let class_type = Ast_expressions.create_class_type (class_name, `OBJC) in
   let args = [(Mangled.from_string CFrontend_config.self, class_type)] in
-  get_predefined_ms_method condition class_name method_name Procname.Instance_objc_method
+  get_predefined_ms_method condition class_name method_name Procname.ObjCInstanceMethod
     mk_procname lang args Ast_expressions.create_BOOL_type
     [] (Some ModelBuiltins.__instanceof)
 

infer/src/clang/cTrans_models.mli

@@ -28,7 +28,7 @@ val is_modeled_builtin : string -> bool
 val is_toll_free_bridging : Procname.t option -> bool
 
 val get_predefined_model_method_signature : string -> string ->
-  (string -> string -> Procname.objc_method_kind -> Procname.t) ->
+  (string -> string -> Procname.objc_cpp_method_kind -> Procname.t) ->
   Config.clang_lang -> CMethod_signature.method_signature option
 
 val is_dispatch_function_name : string -> (string * int) option

infer/src/clang/cTrans_utils.ml

@@ -332,7 +332,9 @@ let objc_new_trans trans_state loc stmt_info cls_name function_type =
   let init_ret_id = Ident.create_fresh Ident.knormal in
   let is_instance = true in
   let call_flags = { CallFlags.default with CallFlags.cf_virtual = is_instance; } in
-  let pname = General_utils.mk_procname_from_objc_method cls_name CFrontend_config.init Procname.Instance_objc_method in
+  let pname =
+    General_utils.mk_procname_from_objc_method
+      cls_name CFrontend_config.init Procname.ObjCInstanceMethod in
   CMethod_trans.create_external_procdesc trans_state.context.CContext.cfg pname is_instance None;
   let args = [(alloc_ret_exp, alloc_ret_type)] in
   let init_stmt_call =

infer/src/clang/cTypes_decl.ml

@@ -103,7 +103,7 @@ let get_record_name_csu decl =
 let get_record_name decl = snd (get_record_name_csu decl)
 
 let get_class_methods class_name decl_list =
-  let process_method_decl = function
+  let process_method_decl meth_decl = match meth_decl with
     | Clang_ast_t.CXXMethodDecl (_, name_info, _, fdi, mdi)
     | Clang_ast_t.CXXConstructorDecl (_, name_info, _, fdi, mdi)
     | Clang_ast_t.CXXConversionDecl (_, name_info, _, fdi, mdi)
@@ -111,7 +111,8 @@ let get_class_methods class_name decl_list =
         let method_name = name_info.Clang_ast_t.ni_name in
         Printing.log_out "  ...Declaring method '%s'.\n" method_name;
         let mangled = General_utils.get_mangled_method_name fdi mdi in
-        let procname = General_utils.mk_procname_from_cpp_method class_name method_name mangled in
+        let procname =
+          General_utils.mk_procname_from_cpp_method class_name method_name ~meth_decl mangled in
         Some procname
     | _ -> None in
   (* poor mans list_filter_map *)