gcc/ada/par.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                                  P A R                                   --
   6 --                                                                          --
   7 --                                 S p e c                                  --
   8 --                                                                          --
   9 --          Copyright (C) 1992-2005, Free Software Foundation, Inc.         --
  10 --                                                                          --
  11 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  12 -- terms of the  GNU General Public License as published  by the Free Soft- --
  13 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  14 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  15 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  16 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  17 -- for  more details.  You should have  received  a copy of the GNU General --
  18 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  19 -- to  the  Free Software Foundation,  51  Franklin  Street,  Fifth  Floor, --
  20 -- Boston, MA 02110-1301, USA.                                              --
  21 --                                                                          --
  22 -- GNAT was originally developed  by the GNAT team at  New York University. --
  23 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  24 --                                                                          --
  25 ------------------------------------------------------------------------------
  26
  27 --  The Par function and its subunits contains all the parsing routines
  28 --  for the top down recursive descent parser that constructs the parse tree
  29
  30 with Types; use Types;
  31
  32 function Par
  33   (Configuration_Pragmas : Boolean;
  34    From_Limited_With     : Boolean := False) return List_Id;
  35 --  Top level parsing routine. There are two cases:
  36 --
  37 --  If Configuration_Pragmas is False, Par parses a compilation unit in the
  38 --  current source file and sets the Cunit, Cunit_Entity and Unit_Name fields
  39 --  of the units table entry for Current_Source_Unit. On return the parse tree
  40 --  is complete, and decorated with any required implicit label declarations.
  41 --  The value returned in this case is always No_List. If From_Limited_With is
  42 --  True, we are parsing a compilation unit found in a limited-with clause (Ada
  43 --  2005, AI-50217)
  44 --
  45 --  If Configuration_Pragmas is True, Par parses a list of configuration
  46 --  pragmas from the current source file, and returns the list of pragmas.