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authorRichard Kenner <kenner@gcc.gnu.org>2001-10-02 10:18:40 -0400
committerRichard Kenner <kenner@gcc.gnu.org>2001-10-02 10:18:40 -0400
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parent70482933d8f6a73b660f4cfa97b5c7c9deaf152e (diff)
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+------------------------------------------------------------------------------
+-- --
+-- GNAT COMPILER COMPONENTS --
+-- --
+-- I M P U N I T --
+-- --
+-- B o d y --
+-- --
+-- $Revision: 1.13 $
+-- --
+-- Copyright (C) 2000-2001 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. --
+-- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
+-- --
+------------------------------------------------------------------------------
+
+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-colire", -- Ada.Command_Line.Remove
+ "a-cwila1", -- Ada.Characters.Wide_Latin_1
+ "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-curexc", -- GNAT.Current_Exception
+ "g-debpoo", -- GNAT.Debug_Pools
+ "g-debuti", -- GNAT.Debug_Utilities
+ "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-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
+
+ --------------------------------------------------
+ -- 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;