--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/ada/sinput-l.ads	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,134 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+--                             S I N P U T . L                              --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--          Copyright (C) 1992-2017, 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 used to actually load a source
+--  file and create entries in the source file table. It also contains the
+--  routines to create virtual entries for instantiations. This is separated
+--  off into a child package to avoid a dependence of Sinput on Osint which
+--  would cause trouble in the tree read/write routines.
+
+package Sinput.L is
+
+   ------------------------------------------
+   -- Subprograms for Loading Source Files --
+   ------------------------------------------
+
+   function Load_Source_File (N : File_Name_Type) return Source_File_Index;
+   --  Given a source file name, returns the index of the corresponding entry
+   --  in the source file table. If the file is not currently loaded, then
+   --  this is the call that causes the source file to be read and an entry
+   --  made in the table. A new entry in the table has the file name and time
+   --  stamp entries set and the Casing entries set to Unknown. Version is set
+   --  to all blanks, and the lines table is initialized but only the first
+   --  entry is set (and Last_Line is set to 1). If the given source file
+   --  cannot be opened, then the value returned is No_Source_File.
+
+   function Load_Config_File (N : File_Name_Type) return Source_File_Index;
+   --  Similar to Load_Source_File, except that the file name is always
+   --  interpreted in the context of the current working directory.
+   --  The file is never preprocessed.
+
+   function Load_Definition_File
+     (N : File_Name_Type) return Source_File_Index;
+   --  Loads preprocessing definition file. Similar to Load_Source_File
+   --  except that this file is not itself preprocessed.
+
+   function Load_Preprocessing_Data_File
+     (N : File_Name_Type) return Source_File_Index;
+   --  Loads preprocessing data file. Similar to Load_Source_File except
+   --  that this file is not itself preprocessed.
+
+   procedure Complete_Source_File_Entry;
+   --  Called on completing the parsing of a source file. This call completes
+   --  the source file table entry for the current source file.
+
+   function Source_File_Is_Body (X : Source_File_Index) return Boolean;
+   --  Returns true if the designated source file contains a subprogram body
+   --  or a package body. This is a limited scan just to determine the answer
+   --  to this question.
+
+   function Source_File_Is_No_Body (X : Source_File_Index) return Boolean;
+   --  Returns true if the designated source file contains pragma No_Body;
+   --  and no other tokens. If the source file contains anything other than
+   --  this sequence of three tokens, then False is returned.
+
+   -------------------------------------------------
+   -- Subprograms for Dealing With Instantiations --
+   -------------------------------------------------
+
+   type Sloc_Adjustment is private;
+   --  Type returned by Create_Instantiation_Source for use in subsequent calls
+   --  to Adjust_Instantiation_Sloc.
+
+   procedure Adjust_Instantiation_Sloc
+     (N      : Node_Id;
+      Factor : Sloc_Adjustment);
+   --  The instantiation tree is created by copying the tree of the generic
+   --  template (including the original Sloc values), and then applying
+   --  Adjust_Instantiation_Sloc to each copied node to adjust the Sloc to
+   --  reference the source entry for the instantiation.
+
+   procedure Create_Instantiation_Source
+     (Inst_Node        : Entity_Id;
+      Template_Id      : Entity_Id;
+      Factor           : out Sloc_Adjustment;
+      Inlined_Body     : Boolean := False;
+      Inherited_Pragma : Boolean := False);
+   --  This procedure creates the source table entry for an instantiation.
+   --  Inst_Node is the instantiation node, and Template_Id is the defining
+   --  identifier of the generic declaration or body unit as appropriate.
+   --  Factor is set to an adjustment factor to be used in subsequent calls to
+   --  Adjust_Instantiation_Sloc. Template_Id can also be a subunit body that
+   --  replaces a stub in a generic unit.
+   --
+   --  The instantiation mechanism is also used for inlined function and
+   --  procedure calls. The parameter Inlined_Body is set to True in such
+   --  cases. This is used for generating error messages that distinguish these
+   --  two cases, otherwise the two cases are handled identically. Similarly,
+   --  the instantiation mechanism is also used for inherited class-wide pre-
+   --  and postconditions. Parameter Inherited_Pragma is set to True in such
+   --  cases.
+
+private
+
+   type Sloc_Adjustment is record
+      Adjust : Source_Ptr;
+      --  Adjustment factor. To be added to source location values in the
+      --  source table entry for the template to get corresponding sloc
+      --  values for the instantiation image of the template. This is not
+      --  really a Source_Ptr value, but rather an offset, but it is more
+      --  convenient to represent it as a Source_Ptr value and this is a
+      --  private type anyway.
+
+      Lo, Hi : Source_Ptr;
+      --  Lo and hi values to which adjustment factor can legitimately
+      --  be applied, used to ensure that no incorrect adjustments are
+      --  made. Really it is a bug if anyone ever tries to adjust outside
+      --  this range, but since we are only doing this anyway for getting
+      --  better error messages, it is not critical.
+
+   end record;
+
+end Sinput.L;