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|
------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- I M P U N I T --
-- --
-- B o d y --
-- --
-- Copyright (C) 2000-2003 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 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 : constant 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-colien", -- Ada.Command_Line.Environment
"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-exctra", -- Ada.Exceptions.Traceback
"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-arrspl", -- GNAT.Array_Split
"g-awk ", -- GNAT.AWK
"g-boubuf", -- GNAT.Bounded_Buffers
"g-boumai", -- GNAT.Bounded_Mailboxes
"g-bubsor", -- GNAT.Bubble_Sort
"g-busora", -- GNAT.Bubble_Sort_A
"g-busorg", -- GNAT.Bubble_Sort_G
"g-calend", -- GNAT.Calendar
"g-casuti", -- GNAT.Case_Util
"g-catiio", -- GNAT.Calendar.Time_IO
"g-cgi ", -- GNAT.CGI
"g-cgicoo", -- GNAT.CGI.Cookie
"g-cgideb", -- GNAT.CGI.Debug
"g-comlin", -- GNAT.Command_Line
"g-comver", -- GNAT.Compiler_Version
"g-crc32 ", -- GNAT.CRC32
"g-ctrl_c", -- GNAT.Ctrl_C
"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-dynhta", -- GNAT.Dynamic_HTables
"g-dyntab", -- GNAT.Dynamic_Tables
"g-excact", -- GNAT.Exception_Actions
"g-except", -- GNAT.Exceptions
"g-exctra", -- GNAT.Exception_Traces
"g-expect", -- GNAT.Expect
"g-flocon", -- GNAT.Float_Control
"g-heasor", -- GNAT.Heap_Sort
"g-hesora", -- GNAT.Heap_Sort_A
"g-hesorg", -- GNAT.Heap_Sort_G
"g-htable", -- GNAT.Htable
"g-io ", -- GNAT.IO
"g-io_aux", -- GNAT.IO_Aux
"g-locfil", -- GNAT.Lock_Files
"g-md5 ", -- GNAT.MD5
"g-memdum", -- GNAT.Memory_Dump
"g-moreex", -- GNAT.Most_Recent_Exception
"g-os_lib", -- GNAT.Os_Lib
"g-pehage", -- GNAT.Perfect_Hash.Generators
"g-perhas", -- GNAT.Perfect_Hash
"g-regexp", -- GNAT.Regexp
"g-regist", -- GNAT.Registry
"g-regpat", -- GNAT.Regpat
"g-semaph", -- GNAT.Semaphores
"g-socket", -- GNAT.Sockets
"g-souinf", -- GNAT.Source_Info
"g-speche", -- GNAT.Spell_Checker
"g-spipat", -- GNAT.Spitbol.Patterns
"g-spitbo", -- GNAT.Spitbol
"g-sptabo", -- GNAT.Spitbol.Table_Boolean
"g-sptain", -- GNAT.Spitbol.Table_Integer
"g-sptavs", -- GNAT.Spitbol.Table_Vstring
"g-string", -- GNAT.Strings
"g-strspl", -- GNAT.String_Split
"g-table ", -- GNAT.Table
"g-tasloc", -- GNAT.Task_Lock
"g-thread", -- GNAT.Threads
"g-traceb", -- GNAT.Traceback
"g-trasym", -- GNAT.Traceback.Symbolic
"g-wistsp", -- GNAT.Wide_String_Split
-----------------------------------------------------
-- 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-cpp ", -- Interfaces.CPP
"i-cstrea", -- Interfaces.C.Streams
"i-jalaob", -- Interfaces.Java.Lang.Object
"i-jalasy", -- Interfaces.Java.Lang.System
"i-jalath", -- Interfaces.Java.Lang.Thread
"i-java ", -- Interfaces.Java
"i-javlan", -- Interfaces.Java.Lang
"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-vthrea", -- Interfaces.Vthreads
"i-vxwoio", -- Interfaces.VxWorks.IO
"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-memory", -- System.Memory
"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;
|
