--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/ada/fname-uf.ads	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,114 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+--                             F N A M E . U F                              --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--          Copyright (C) 1992-2007, 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 3,  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 COPYING3.  If not, go to --
+-- http://www.gnu.org/licenses for a complete copy of the license.          --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  This child package contains the routines to translate a unit name to
+--  a file name taking into account Source_File_Name pragmas. It also
+--  contains the auxiliary routines used to record data from the pragmas.
+
+--  Note: the reason we split this into a child unit is that the routines
+--  for unit name translation have a significant number of additional
+--  dependencies, including osint, and hence sdefault. There are a number
+--  of tools that use utility subprograms in the Fname parent, but do not
+--  need the functionality in this child package (and certainly do not want
+--  to deal with the extra dependencies).
+
+with Casing; use Casing;
+with Types;  use Types;
+
+package Fname.UF is
+
+   -----------------
+   -- Subprograms --
+   -----------------
+
+   type Expected_Unit_Type is (Expect_Body, Expect_Spec, Unknown);
+   --  Return value from Get_Expected_Unit_Type
+
+   function Get_Expected_Unit_Type
+     (Fname : File_Name_Type) return Expected_Unit_Type;
+   --  If possible, determine whether the given file name corresponds to a unit
+   --  that is a spec or body (e.g. by examining the extension). If this cannot
+   --  be determined with the file naming conventions in use, then the returned
+   --  value is set to Unknown.
+
+   function Get_File_Name
+     (Uname    : Unit_Name_Type;
+      Subunit  : Boolean;
+      May_Fail : Boolean := False) return File_Name_Type;
+   --  This function returns the file name that corresponds to a given unit
+   --  name, Uname. The Subunit parameter is set True for subunits, and false
+   --  for all other kinds of units. The caller must ensure that the unit name
+   --  meets the requirements given in package Uname.
+   --
+   --  When May_Fail is True, if the file cannot be found, this function
+   --  returns No_File. When it is False, if the file cannot be found,
+   --  a file name compatible with one pattern Source_File_Name pragma is
+   --  returned.
+
+   function Get_Unit_Index (Uname : Unit_Name_Type) return Nat;
+   --  If there is a specific Source_File_Name pragma for this unit, then
+   --  return the corresponding unit index value. Return 0 if no index given.
+
+   procedure Initialize;
+   --  Initialize internal tables. This is called automatically when the
+   --  package body is elaborated, so an explicit call to Initialize is
+   --  only required if it is necessary to reinitialize the source file
+   --  name pragma tables.
+
+   procedure Lock;
+   --  Lock tables before calling back end
+
+   function File_Name_Of_Spec (Name : Name_Id) return File_Name_Type;
+   --  Returns the file name that corresponds to the spec of a given unit
+   --  name. The unit name here is not encoded as a Unit_Name_Type, but is
+   --  rather just a normal form name in lower case, e.g. "xyz.def".
+
+   function File_Name_Of_Body (Name : Name_Id) return File_Name_Type;
+   --  Returns the file name that corresponds to the body of a given unit
+   --  name. The unit name here is not encoded as a Unit_Name_Type, but is
+   --  rather just a normal form name in lower case, e.g. "xyz.def".
+
+   procedure Set_File_Name
+     (U     : Unit_Name_Type;
+      F     : File_Name_Type;
+      Index : Nat);
+   --  Make association between given unit name, U, and the given file name,
+   --  F. This is the routine called to process a Source_File_Name pragma.
+   --  Index is the value from the index parameter of the pragma if present
+   --  and zero if no index parameter is present.
+
+   procedure Set_File_Name_Pattern
+     (Pat : String_Ptr;
+      Typ : Character;
+      Dot : String_Ptr;
+      Cas : Casing_Type);
+   --  This is called to process a Source_File_Name pragma whose first
+   --  argument is a file name pattern string.  Pat is this pattern string,
+   --  which contains an asterisk to correspond to the unit. Typ is one of
+   --  'b'/'s'/'u' for body/spec/subunit, Dot is the separator string
+   --  for child/subunit names, and Cas is one of Lower/Upper/Mixed
+   --  indicating the required case for the file name.
+
+end Fname.UF;