| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT COMPILER COMPONENTS -- |
| -- -- |
| -- S T Y L E G . C -- |
| -- -- |
| -- B o d y -- |
| -- -- |
| -- Copyright (C) 1992-2003 Free Software Foundation, Inc. -- |
| -- -- |
| -- GNAT is free software; you can redistribute it and/or modify it under -- |
| -- terms of the GNU General Public License as published by the Free Soft- -- |
| -- ware Foundation; either version 2, or (at your option) any later ver- -- |
| -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- |
| -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- |
| -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- |
| -- for more details. You should have received a copy of the GNU General -- |
| -- Public License distributed with GNAT; see file COPYING. If not, write -- |
| -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, -- |
| -- MA 02111-1307, USA. -- |
| -- -- |
| -- GNAT was originally developed by the GNAT team at New York University. -- |
| -- Extensive contributions were provided by Ada Core Technologies Inc. -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| with Atree; use Atree; |
| with Casing; use Casing; |
| with Csets; use Csets; |
| with Einfo; use Einfo; |
| with Err_Vars; use Err_Vars; |
| with Namet; use Namet; |
| with Sinfo; use Sinfo; |
| with Sinput; use Sinput; |
| with Stand; use Stand; |
| with Stylesw; use Stylesw; |
| |
| package body Styleg.C is |
| |
| ----------------------- |
| -- Body_With_No_Spec -- |
| ----------------------- |
| |
| -- If the check specs mode (-gnatys) is set, then all subprograms must |
| -- have specs unless they are parameterless procedures that are not child |
| -- units at the library level (i.e. they are possible main programs). |
| |
| procedure Body_With_No_Spec (N : Node_Id) is |
| begin |
| if Style_Check_Specs then |
| if Nkind (Parent (N)) = N_Compilation_Unit then |
| declare |
| Spec : constant Node_Id := Specification (N); |
| Defnm : constant Node_Id := Defining_Unit_Name (Spec); |
| |
| begin |
| if Nkind (Spec) = N_Procedure_Specification |
| and then Nkind (Defnm) = N_Defining_Identifier |
| and then No (First_Formal (Defnm)) |
| then |
| return; |
| end if; |
| end; |
| end if; |
| |
| Error_Msg_N ("(style): subprogram body has no previous spec", N); |
| end if; |
| end Body_With_No_Spec; |
| |
| ---------------------- |
| -- Check_Identifier -- |
| ---------------------- |
| |
| -- In check references mode (-gnatyr), identifier uses must be cased |
| -- the same way as the corresponding identifier declaration. |
| |
| procedure Check_Identifier |
| (Ref : Node_Or_Entity_Id; |
| Def : Node_Or_Entity_Id) |
| is |
| Sref : Source_Ptr := Sloc (Ref); |
| Sdef : Source_Ptr := Sloc (Def); |
| Tref : Source_Buffer_Ptr; |
| Tdef : Source_Buffer_Ptr; |
| Nlen : Nat; |
| Cas : Casing_Type; |
| |
| begin |
| -- If reference does not come from source, nothing to check |
| |
| if not Comes_From_Source (Ref) then |
| return; |
| |
| -- If previous error on either node/entity, ignore |
| |
| elsif Error_Posted (Ref) or else Error_Posted (Def) then |
| return; |
| |
| -- Case of definition comes from source |
| |
| elsif Comes_From_Source (Def) then |
| |
| -- Check same casing if we are checking references |
| |
| if Style_Check_References then |
| Tref := Source_Text (Get_Source_File_Index (Sref)); |
| Tdef := Source_Text (Get_Source_File_Index (Sdef)); |
| |
| -- Ignore operator name case completely. This also catches the |
| -- case of where one is an operator and the other is not. This |
| -- is a phenomenon from rewriting of operators as functions, |
| -- and is to be ignored. |
| |
| if Tref (Sref) = '"' or else Tdef (Sdef) = '"' then |
| return; |
| |
| else |
| while Tref (Sref) = Tdef (Sdef) loop |
| |
| -- If end of identifier, all done |
| |
| if not Identifier_Char (Tref (Sref)) then |
| return; |
| |
| -- Otherwise loop continues |
| |
| else |
| Sref := Sref + 1; |
| Sdef := Sdef + 1; |
| end if; |
| end loop; |
| |
| -- Fall through loop when mismatch between identifiers |
| -- If either identifier is not terminated, error. |
| |
| if Identifier_Char (Tref (Sref)) |
| or else |
| Identifier_Char (Tdef (Sdef)) |
| then |
| Error_Msg_Node_1 := Def; |
| Error_Msg_Sloc := Sloc (Def); |
| Error_Msg |
| ("(style) bad casing of & declared#", Sref); |
| return; |
| |
| -- Else end of identifiers, and they match |
| |
| else |
| return; |
| end if; |
| end if; |
| end if; |
| |
| -- Case of definition in package Standard |
| |
| elsif Sdef = Standard_Location then |
| |
| -- Check case of identifiers in Standard |
| |
| if Style_Check_Standard then |
| Tref := Source_Text (Get_Source_File_Index (Sref)); |
| |
| -- Ignore operators |
| |
| if Tref (Sref) = '"' then |
| null; |
| |
| -- Otherwise determine required casing of Standard entity |
| |
| else |
| -- ASCII entities are in all upper case |
| |
| if Entity (Ref) = Standard_ASCII then |
| Cas := All_Upper_Case; |
| |
| -- Special names in ASCII are also all upper case |
| |
| elsif Entity (Ref) in SE (S_LC_A) .. SE (S_LC_Z) |
| or else |
| Entity (Ref) in SE (S_NUL) .. SE (S_US) |
| or else |
| Entity (Ref) = SE (S_DEL) |
| then |
| Cas := All_Upper_Case; |
| |
| -- All other entities are in mixed case |
| |
| else |
| Cas := Mixed_Case; |
| end if; |
| |
| Nlen := Length_Of_Name (Chars (Ref)); |
| |
| -- Now check if we have the right casing |
| |
| if Determine_Casing |
| (Tref (Sref .. Sref + Source_Ptr (Nlen) - 1)) = Cas |
| then |
| null; |
| else |
| Name_Len := Integer (Nlen); |
| Name_Buffer (1 .. Name_Len) := |
| String (Tref (Sref .. Sref + Source_Ptr (Nlen) - 1)); |
| Set_Casing (Cas); |
| Error_Msg_Name_1 := Name_Enter; |
| Error_Msg_N |
| ("(style) bad casing of { declared in Standard", Ref); |
| end if; |
| end if; |
| end if; |
| end if; |
| end Check_Identifier; |
| |
| ----------------------------------- |
| -- Subprogram_Not_In_Alpha_Order -- |
| ----------------------------------- |
| |
| procedure Subprogram_Not_In_Alpha_Order (Name : Node_Id) is |
| begin |
| if Style_Check_Subprogram_Order then |
| Error_Msg_N |
| ("(style) subprogram body& not in alphabetical order", Name); |
| end if; |
| end Subprogram_Not_In_Alpha_Order; |
| end Styleg.C; |
