------------------------------------------------------------------------------ -- -- -- GNAT COMPILER COMPONENTS -- -- -- -- I M P U N I T -- -- -- -- B o d y -- -- -- -- Copyright (C) 2000-2002 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 Lib; use Lib; with Namet; use Namet; with Opt; use Opt; package body Impunit is subtype File_Name_8 is String (1 .. 8); type File_List is array (Nat range <>) of File_Name_8; -- The following is a giant string containing the concenated names -- of all non-implementation internal files, i.e. the complete list -- of files for internal units which a program may legitimately WITH. -- Note that this list should match the list of units documented in -- the "GNAT Library" section of the GNAT Reference Manual. Non_Imp_File_Names : File_List := ( ----------------------------------------------- -- Ada Hierarchy Units from Reference Manual -- ----------------------------------------------- "a-astaco", -- Ada.Asynchronous_Task_Control "a-calend", -- Ada.Calendar "a-chahan", -- Ada.Characters.Handling "a-charac", -- Ada.Characters "a-chlat1", -- Ada.Characters.Latin_1 "a-comlin", -- Ada.Command_Line "a-decima", -- Ada.Decimal "a-direio", -- Ada.Direct_IO "a-dynpri", -- Ada.Dynamic_Priorities "a-except", -- Ada.Exceptions "a-finali", -- Ada.Finalization "a-flteio", -- Ada.Float_Text_IO "a-fwteio", -- Ada.Float_Wide_Text_IO "a-inteio", -- Ada.Integer_Text_IO "a-interr", -- Ada.Interrupts "a-intnam", -- Ada.Interrupts.Names "a-ioexce", -- Ada.IO_Exceptions "a-iwteio", -- Ada.Integer_Wide_Text_IO "a-ncelfu", -- Ada.Numerics.Complex_Elementary_Functions "a-ngcefu", -- Ada.Numerics.Generic_Complex_Elementary_Functions "a-ngcoty", -- Ada.Numerics.Generic_Complex_Types "a-ngelfu", -- Ada.Numerics.Generic_Elementary_Functions "a-nucoty", -- Ada.Numerics.Complex_Types "a-nudira", -- Ada.Numerics.Discrete_Random "a-nuelfu", -- Ada.Numerics.Elementary_Functions "a-nuflra", -- Ada.Numerics.Float_Random "a-numeri", -- Ada.Numerics "a-reatim", -- Ada.Real_Time "a-sequio", -- Ada.Sequential_IO "a-stmaco", -- Ada.Strings.Maps.Constants "a-storio", -- Ada.Storage_IO "a-strbou", -- Ada.Strings.Bounded "a-stream", -- Ada.Streams "a-strfix", -- Ada.Strings.Fixed "a-string", -- Ada.Strings "a-strmap", -- Ada.Strings.Maps "a-strunb", -- Ada.Strings.Unbounded "a-ststio", -- Ada.Streams.Stream_IO "a-stwibo", -- Ada.Strings.Wide_Bounded "a-stwifi", -- Ada.Strings.Wide_Fixed "a-stwima", -- Ada.Strings.Wide_Maps "a-stwiun", -- Ada.Strings.Wide_Unbounded "a-swmwco", -- Ada.Strings.Wide_Maps.Wide_Constants "a-sytaco", -- Ada.Synchronous_Task_Control "a-tags ", -- Ada.Tags "a-tasatt", -- Ada.Task_Attributes "a-taside", -- Ada.Task_Identification "a-teioed", -- Ada.Text_IO.Editing "a-textio", -- Ada.Text_IO "a-ticoio", -- Ada.Text_IO.Complex_IO "a-titest", -- Ada.Text_IO.Text_Streams "a-unccon", -- Ada.Unchecked_Conversion "a-uncdea", -- Ada.Unchecked_Deallocation "a-witeio", -- Ada.Wide_Text_IO "a-wtcoio", -- Ada.Wide_Text_IO.Complex_IO "a-wtedit", -- Ada.Wide_Text_IO.Editing "a-wttest", -- Ada.Wide_Text_IO.Text_Streams ------------------------------------------------- -- RM Required Additions to Ada for GNAT Types -- ------------------------------------------------- "a-lfteio", -- Ada.Long_Float_Text_IO "a-lfwtio", -- Ada.Long_Float_Wide_Text_IO "a-liteio", -- Ada.Long_Integer_Text_IO "a-liwtio", -- Ada.Long_Integer_Wide_Text_IO "a-llftio", -- Ada.Long_Long_Float_Text_IO "a-llfwti", -- Ada.Long_Long_Float_Wide_Text_IO "a-llitio", -- Ada.Long_Long_Integer_Text_IO "a-lliwti", -- Ada.Long_Long_Integer_Wide_Text_IO "a-nlcefu", -- Ada.Long_Complex_Elementary_Functions "a-nlcoty", -- Ada.Numerics.Long_Complex_Types "a-nlelfu", -- Ada.Numerics.Long_Elementary_Functions "a-nllcef", -- Ada.Long_Long_Complex_Elementary_Functions "a-nllefu", -- Ada.Numerics.Long_Long_Elementary_Functions "a-nltcty", -- Ada.Numerics.Long_Long_Complex_Types "a-nscefu", -- Ada.Short_Complex_Elementary_Functions "a-nscoty", -- Ada.Numerics.Short_Complex_Types "a-nselfu", -- Ada.Numerics.Short_Elementary_Functions "a-sfteio", -- Ada.Short_Float_Text_IO "a-sfwtio", -- Ada.Short_Float_Wide_Text_IO "a-siteio", -- Ada.Short_Integer_Text_IO "a-siwtio", -- Ada.Short_Integer_Wide_Text_IO "a-ssitio", -- Ada.Short_Short_Integer_Text_IO "a-ssiwti", -- Ada.Short_Short_Integer_Wide_Text_IO ----------------------------------- -- GNAT Defined Additions to Ada -- ----------------------------------- "a-chlat9", -- Ada.Characters.Latin_9 "a-colire", -- Ada.Command_Line.Remove "a-cwila1", -- Ada.Characters.Wide_Latin_1 "a-cwila9", -- Ada.Characters.Wide_Latin_9 "a-diocst", -- Ada.Direct_IO.C_Streams "a-einuoc", -- Ada.Exceptions.Is_Null_Occurrence "a-siocst", -- Ada.Sequential_IO.C_Streams "a-ssicst", -- Ada.Streams.Stream_IO.C_Streams "a-suteio", -- Ada.Strings.Unbounded.Text_IO "a-swuwti", -- Ada.Strings.Wide_Unbounded.Wide_Text_IO "a-taidim", -- Ada.Task_Identification.Image "a-tiocst", -- Ada.Text_IO.C_Streams "a-wtcstr", -- Ada.Wide_Text_IO.C_Streams --------------------------- -- GNAT Special IO Units -- --------------------------- -- As further explained elsewhere (see Sem_Ch10), the internal -- packages of Text_IO and Wide_Text_IO are actually implemented -- as separate children, but this fact is intended to be hidden -- from the user completely. Any attempt to WITH one of these -- units will be diagnosed as an error later on, but for now we -- do not consider these internal implementation units (if we did, -- then we would get a junk warning which would be confusing and -- unecessary, given that we generate a clear error message). "a-tideio", -- Ada.Text_IO.Decimal_IO "a-tienio", -- Ada.Text_IO.Enumeration_IO "a-tifiio", -- Ada.Text_IO.Fixed_IO "a-tiflio", -- Ada.Text_IO.Float_IO "a-tiinio", -- Ada.Text_IO.Integer_IO "a-tiinio", -- Ada.Text_IO.Integer_IO "a-timoio", -- Ada.Text_IO.Modular_IO "a-wtdeio", -- Ada.Wide_Text_IO.Decimal_IO "a-wtenio", -- Ada.Wide_Text_IO.Enumeration_IO "a-wtfiio", -- Ada.Wide_Text_IO.Fixed_IO "a-wtflio", -- Ada.Wide_Text_IO.Float_IO "a-wtinio", -- Ada.Wide_Text_IO.Integer_IO "a-wtmoio", -- Ada.Wide_Text_IO.Modular_IO ------------------------ -- GNAT Library Units -- ------------------------ "g-awk ", -- GNAT.AWK "g-busora", -- GNAT.Bubble_Sort_A "g-busorg", -- GNAT.Bubble_Sort_G "g-calend", -- GNAT.Calendar "g-catiio", -- GNAT.Calendar.Time_IO "g-casuti", -- GNAT.Case_Util "g-cgi ", -- GNAT.CGI "g-cgicoo", -- GNAT.CGI.Cookie "g-cgideb", -- GNAT.CGI.Debug "g-comlin", -- GNAT.Command_Line "g-crc32 ", -- GNAT.CRC32 "g-curexc", -- GNAT.Current_Exception "g-debpoo", -- GNAT.Debug_Pools "g-debuti", -- GNAT.Debug_Utilities "g-diopit", -- GNAT.Directory_Operations.Iteration "g-dirope", -- GNAT.Directory_Operations "g-dyntab", -- GNAT.Dynamic_Tables "g-exctra", -- GNAT.Exception_Traces "g-expect", -- GNAT.Expect "g-flocon", -- GNAT.Float_Control "g-htable", -- GNAT.Htable "g-hesora", -- GNAT.Heap_Sort_A "g-hesorg", -- GNAT.Heap_Sort_G "g-io ", -- GNAT.IO "g-io_aux", -- GNAT.IO_Aux "g-locfil", -- GNAT.Lock_Files "g-md5 ", -- GNAT.MD5 "g-moreex", -- GNAT.Most_Recent_Exception "g-os_lib", -- GNAT.Os_Lib "g-regexp", -- GNAT.Regexp "g-regist", -- GNAT.Registry "g-regpat", -- GNAT.Regpat "g-socket", -- GNAT.Sockets "g-sptabo", -- GNAT.Spitbol.Table_Boolean "g-sptain", -- GNAT.Spitbol.Table_Integer "g-sptavs", -- GNAT.Spitbol.Table_Vstring "g-souinf", -- GNAT.Source_Info "g-speche", -- GNAT.Spell_Checker "g-spitbo", -- GNAT.Spitbol "g-spipat", -- GNAT.Spitbol.Patterns "g-table ", -- GNAT.Table "g-tasloc", -- GNAT.Task_Lock "g-thread", -- GNAT.Threads "g-traceb", -- GNAT.Traceback "g-trasym", -- GNAT.Traceback.Symbolic ----------------------------------------------------- -- Interface Hierarchy Units from Reference Manual -- ----------------------------------------------------- "i-c ", -- Interfaces.C "i-cobol ", -- Interfaces.Cobol "i-cpoint", -- Interfaces.C.Pointers "i-cstrin", -- Interfaces.C.Strings "i-fortra", -- Interfaces.Fortran ------------------------------------------ -- GNAT Defined Additions to Interfaces -- ------------------------------------------ "i-cexten", -- Interfaces.C.Extensions "i-csthre", -- Interfaces.C.Sthreads "i-cstrea", -- Interfaces.C.Streams "i-cpp ", -- Interfaces.CPP "i-java ", -- Interfaces.Java "i-javlan", -- Interfaces.Java.Lang "i-jalaob", -- Interfaces.Java.Lang.Object "i-jalasy", -- Interfaces.Java.Lang.System "i-jalath", -- Interfaces.Java.Lang.Thread "i-os2err", -- Interfaces.Os2lib.Errors "i-os2lib", -- Interfaces.Os2lib "i-os2syn", -- Interfaces.Os2lib.Synchronization "i-os2thr", -- Interfaces.Os2lib.Threads "i-pacdec", -- Interfaces.Packed_Decimal "i-vxwork", -- Interfaces.VxWorks "i-vxwoio", -- Interfaces.VxWorks.IO -------------------------------------------------- -- System Hierarchy Units from Reference Manual -- -------------------------------------------------- "s-atacco", -- System.Address_To_Access_Conversions "s-maccod", -- System.Machine_Code "s-rpc ", -- System.Rpc "s-stoele", -- System.Storage_Elements "s-stopoo", -- System.Storage_Pools -------------------------------------- -- GNAT Defined Additions to System -- -------------------------------------- "s-addima", -- System.Address_Image "s-assert", -- System.Assertions "s-parint", -- System.Partition_Interface "s-tasinf", -- System.Task_Info "s-wchcnv", -- System.Wch_Cnv "s-wchcon"); -- System.Wch_Con ------------------------- -- Implementation_Unit -- ------------------------- function Implementation_Unit (U : Unit_Number_Type) return Boolean is Fname : constant File_Name_Type := Unit_File_Name (U); begin -- All units are OK in GNAT mode if GNAT_Mode then return False; end if; -- If length of file name is greater than 12, definitely OK! -- The value 12 here is an 8 char name with extension .ads. if Length_Of_Name (Fname) > 12 then return False; end if; -- Otherwise test file name Get_Name_String (Fname); -- Definitely OK if file name does not start with a- g- s- i- if Name_Len < 3 or else Name_Buffer (2) /= '-' or else (Name_Buffer (1) /= 'a' and then Name_Buffer (1) /= 'g' and then Name_Buffer (1) /= 'i' and then Name_Buffer (1) /= 's') then return False; end if; -- Definitely OK if file name does not end in .ads. This can -- happen when non-standard file names are being used. if Name_Buffer (Name_Len - 3 .. Name_Len) /= ".ads" then return False; end if; -- Otherwise normalize file name to 8 characters Name_Len := Name_Len - 4; while Name_Len < 8 loop Name_Len := Name_Len + 1; Name_Buffer (Name_Len) := ' '; end loop; -- Definitely OK if name is in list for J in Non_Imp_File_Names'Range loop if Name_Buffer (1 .. 8) = Non_Imp_File_Names (J) then return False; end if; end loop; -- Only remaining special possibilities are children of -- System.RPC and System.Garlic and special files of the -- form System.Aux... Get_Name_String (Unit_Name (U)); if Name_Len > 12 and then Name_Buffer (1 .. 11) = "system.rpc." then return False; end if; if Name_Len > 15 and then Name_Buffer (1 .. 14) = "system.garlic." then return False; end if; if Name_Len > 11 and then Name_Buffer (1 .. 10) = "system.aux" then return False; end if; -- All tests failed, this is definitely an implementation unit return True; end Implementation_Unit; end Impunit;