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262 lines
9.5 KiB
262 lines
9.5 KiB
(*
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* Copyright (c) 2016 - present Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*)
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open! IStd
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let get_available_attr_ios_sdk an =
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let open Clang_ast_t in
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let rec get_available_attr attrs =
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match attrs with
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| [] -> None
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| AvailabilityAttr attr_info :: _ ->
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(match attr_info.ai_parameters with
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| "ios" :: version :: _ ->
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Some (String.Search_pattern.replace_all
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(String.Search_pattern.create "_") ~in_:version ~with_:".")
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| _ -> None)
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| _ :: rest -> get_available_attr rest in
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match an with
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| Ctl_parser_types.Decl decl ->
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let decl_info = Clang_ast_proj.get_decl_tuple decl in
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get_available_attr decl_info.di_attributes
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| _ -> None
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let get_ivar_attributes ivar_decl =
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let open Clang_ast_t in
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match ivar_decl with
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| ObjCIvarDecl (ivar_decl_info, _, _, _, _) ->
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(match CAst_utils.get_property_of_ivar ivar_decl_info.Clang_ast_t.di_pointer with
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| Some ObjCPropertyDecl (_, _, obj_c_property_decl_info) ->
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obj_c_property_decl_info.Clang_ast_t.opdi_property_attributes
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| _ -> [])
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| _ -> []
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(* list of cxx references captured by decl *)
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let captured_variables_cxx_ref an =
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let open Clang_ast_t in
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let capture_var_is_cxx_ref reference_captured_vars captured_var =
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let decl_ref_opt = captured_var.Clang_ast_t.bcv_variable in
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match CAst_utils.get_decl_opt_with_decl_ref decl_ref_opt with
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| Some VarDecl (_, named_decl_info, qual_type, _)
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| Some ParmVarDecl (_, named_decl_info, qual_type, _)
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| Some ImplicitParamDecl (_, named_decl_info, qual_type, _) ->
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(match CAst_utils.get_desugared_type qual_type.Clang_ast_t.qt_type_ptr with
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| Some RValueReferenceType _ | Some LValueReferenceType _ ->
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named_decl_info::reference_captured_vars
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| _ -> reference_captured_vars)
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| _ -> reference_captured_vars in
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match an with
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| Ctl_parser_types.Decl (BlockDecl (_, bdi)) ->
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IList.fold_left capture_var_is_cxx_ref [] bdi.bdi_captured_variables
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| _ -> []
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type t = string * string list (* (name, [param1,...,paramK]) *)
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let pp_predicate fmt (name, arglist) =
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Format.fprintf fmt "%s(%a)" name (Pp.comma_seq Format.pp_print_string) arglist
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let is_declaration_kind decl s =
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String.equal (Clang_ast_proj.get_decl_kind_string decl) s
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(* st |= call_method(m) *)
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let call_method m an =
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match an with
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| Ctl_parser_types.Stmt (Clang_ast_t.ObjCMessageExpr (_, _, _, omei)) ->
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String.equal omei.omei_selector m
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| _ -> false
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let property_name_contains_word word an =
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match an with
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| Ctl_parser_types.Decl decl ->
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(match Clang_ast_proj.get_named_decl_tuple decl with
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| Some (_, n) -> let pname = n.Clang_ast_t.ni_name in
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let rexp = Str.regexp_string_case_fold word in
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(try
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Str.search_forward rexp pname 0 >= 0
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with Not_found -> false)
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| _ -> false)
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| _ -> false
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let is_objc_extension lcxt =
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CGeneral_utils.is_objc_extension lcxt.CLintersContext.translation_unit_context
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let is_syntactically_global_var an =
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match an with
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| Ctl_parser_types.Decl d -> CAst_utils.is_syntactically_global_var d
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| _ -> false
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let is_const_expr_var an =
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match an with
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| Ctl_parser_types.Decl d -> CAst_utils.is_const_expr_var d
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| _ -> false
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let decl_ref_is_in names st =
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match st with
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| Clang_ast_t.DeclRefExpr (_, _, _, drti) ->
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(match drti.drti_decl_ref with
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| Some dr -> let ndi, _, _ = CAst_utils.get_info_from_decl_ref dr in
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List.exists ~f:(String.equal ndi.ni_name) names
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| _ -> false)
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| _ -> false
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let call_function_named names an =
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match an with
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| Ctl_parser_types.Stmt st ->
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CAst_utils.exists_eventually_st decl_ref_is_in names st
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| _ -> false
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let is_strong_property an =
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match an with
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| Ctl_parser_types.Decl (Clang_ast_t.ObjCPropertyDecl (_, _, pdi)) ->
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ObjcProperty_decl.is_strong_property pdi
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| _ -> false
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let is_assign_property an =
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match an with
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| Ctl_parser_types.Decl (Clang_ast_t.ObjCPropertyDecl (_, _, pdi)) ->
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ObjcProperty_decl.is_assign_property pdi
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| _ -> false
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let is_property_pointer_type an =
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let open Clang_ast_t in
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match an with
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| Ctl_parser_types.Decl (ObjCPropertyDecl (_, _, pdi)) ->
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(match CAst_utils.get_desugared_type pdi.opdi_type_ptr with
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| Some MemberPointerType _
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| Some ObjCObjectPointerType _
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| Some BlockPointerType _ -> true
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| Some TypedefType (_, tti) ->
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String.equal (CAst_utils.name_of_typedef_type_info tti) CFrontend_config.id_cl
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| exception Not_found -> false
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| _ -> false)
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| _ -> false
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let context_in_synchronized_block context =
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context.CLintersContext.in_synchronized_block
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(* checks if ivar is defined among a set of fields and if it is atomic *)
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let is_ivar_atomic an =
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match an with
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| Ctl_parser_types.Stmt (Clang_ast_t.ObjCIvarRefExpr (_, _, _, irei)) ->
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let dr_ref = irei.Clang_ast_t.ovrei_decl_ref in
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let ivar_pointer = dr_ref.Clang_ast_t.dr_decl_pointer in
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(match CAst_utils.get_decl ivar_pointer with
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| Some d ->
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let attributes = get_ivar_attributes d in
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List.exists ~f:(PVariant.(=) `Atomic) attributes
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| _ -> false)
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| _ -> false
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let is_method_property_accessor_of_ivar an context =
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let open Clang_ast_t in
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match an with
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| Ctl_parser_types.Stmt (ObjCIvarRefExpr (_, _, _, irei)) ->
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let dr_ref = irei.Clang_ast_t.ovrei_decl_ref in
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let ivar_pointer = dr_ref.Clang_ast_t.dr_decl_pointer in
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(match context.CLintersContext.current_method with
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| Some ObjCMethodDecl (_, _, mdi) ->
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if mdi.omdi_is_property_accessor then
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let property_opt = mdi.omdi_property_decl in
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match CAst_utils.get_decl_opt_with_decl_ref property_opt with
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| Some ObjCPropertyDecl (_, _, pdi) ->
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(match pdi.opdi_ivar_decl with
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| Some decl_ref -> Int.equal decl_ref.dr_decl_pointer ivar_pointer
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| None -> false)
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| _ -> false
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else false
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| _ -> false)
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| _ -> false
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let is_objc_constructor context =
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match context.CLintersContext.current_method with
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| Some method_decl ->
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let method_name = (match Clang_ast_proj.get_named_decl_tuple method_decl with
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| Some (_, mnd) -> mnd.Clang_ast_t.ni_name
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| _ -> "") in
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Procname.is_objc_constructor method_name
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| _ -> false
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let is_objc_dealloc context =
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match context.CLintersContext.current_method with
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| Some method_decl ->
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let method_name = (match Clang_ast_proj.get_named_decl_tuple method_decl with
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| Some (_, mnd) -> mnd.Clang_ast_t.ni_name
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| _ -> "") in
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Procname.is_objc_dealloc method_name
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| _ -> false
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let captures_cxx_references an =
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IList.length (captured_variables_cxx_ref an) > 0
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let is_binop_with_kind str_kind an =
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if not (Clang_ast_proj.is_valid_binop_kind_name str_kind) then
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failwith ("Binary operator kind " ^ str_kind ^ " is not valid");
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match an with
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| Ctl_parser_types.Stmt (Clang_ast_t.BinaryOperator (_, _, _, boi)) ->
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String.equal (Clang_ast_proj.string_of_binop_kind boi.boi_kind) str_kind
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| _ -> false
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let is_unop_with_kind str_kind an =
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if not (Clang_ast_proj.is_valid_unop_kind_name str_kind) then
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failwith ("Unary operator kind " ^ str_kind ^ " is not valid");
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match an with
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| Ctl_parser_types.Stmt (Clang_ast_t.UnaryOperator (_, _, _, uoi)) ->
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String.equal (Clang_ast_proj.string_of_unop_kind uoi.uoi_kind) str_kind
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| _ -> false
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let is_node nodename an =
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if not (Clang_ast_proj.is_valid_astnode_kind nodename) then
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failwith ("Node " ^ nodename ^ " is not a valid AST node");
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let an_str = match an with
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| Ctl_parser_types.Stmt s -> Clang_ast_proj.get_stmt_kind_string s
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| Ctl_parser_types.Decl d -> Clang_ast_proj.get_decl_kind_string d in
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String.equal nodename an_str
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let isa classname an =
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match an with
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| Ctl_parser_types.Stmt stmt ->
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(match Clang_ast_proj.get_expr_tuple stmt with
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| Some (_, _, expr_info) ->
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let typ = CAst_utils.get_desugared_type expr_info.ei_type_ptr in
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CAst_utils.is_ptr_to_objc_class typ classname
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| _ -> false)
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| _ -> false
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let decl_unavailable_in_supported_ios_sdk (cxt : CLintersContext.context) an =
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let allowed_os_versions =
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match Config.iphoneos_target_sdk_version,
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(cxt.if_context : CLintersContext.if_context option) with
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| Some iphoneos_target_sdk_version, Some if_context ->
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iphoneos_target_sdk_version :: if_context.ios_version_guard
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| Some iphoneos_target_sdk_version, None -> [iphoneos_target_sdk_version]
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| _ -> [] in
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let max_allowed_version_opt = List.max_elt allowed_os_versions ~cmp:Utils.compare_versions in
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let available_attr_ios_sdk = get_available_attr_ios_sdk an in
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match available_attr_ios_sdk, max_allowed_version_opt with
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| Some available_attr_ios_sdk, Some max_allowed_version ->
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(Utils.compare_versions available_attr_ios_sdk max_allowed_version) > 0
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| _ -> false
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let within_responds_to_selector_block (cxt:CLintersContext.context) an =
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let open Clang_ast_t in
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match an with
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| Ctl_parser_types.Decl (ObjCMethodDecl (_, named_decl_info, _)) ->
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(match cxt.if_context with
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| Some if_context ->
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let in_selector_block = if_context.within_responds_to_selector_block in
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List.mem ~equal:String.equal in_selector_block named_decl_info.ni_name
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| None -> false)
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| _ -> false
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