gcc/ada/sem_ch10.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                             S E M _ C H 1 0                              --
   6 --                                                                          --
   7 --                                 S p e c                                  --
   8 --                                                                          --
   9 --          Copyright (C) 1992-2018, 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 3,  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 COPYING3.  If not, go to --
  19 -- http://www.gnu.org/licenses for a complete copy of the license.          --
  20 --                                                                          --
  21 -- GNAT was originally developed  by the GNAT team at  New York University. --
  22 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  23 --                                                                          --
  24 ------------------------------------------------------------------------------
  25
  26 with Types; use Types;
  27
  28 package Sem_Ch10 is
  29    procedure Analyze_Compilation_Unit                   (N : Node_Id);
  30    procedure Analyze_With_Clause                        (N : Node_Id);
  31    procedure Analyze_Subprogram_Body_Stub               (N : Node_Id);
  32    procedure Analyze_Package_Body_Stub                  (N : Node_Id);
  33    procedure Analyze_Task_Body_Stub                     (N : Node_Id);
  34    procedure Analyze_Protected_Body_Stub                (N : Node_Id);
  35    procedure Analyze_Subunit                            (N : Node_Id);
  36
  37    procedure Install_Context (N : Node_Id; Chain : Boolean := True);
  38    --  Installs the entities from the context clause of the given compilation
  39    --  unit into the visibility chains. This is done before analyzing a unit.
  40    --  For a child unit, install context of parents as well. The flag Chain is
  41    --  used to control the "chaining" or linking of use-type and use-package
  42    --  clauses to avoid circularities when reinstalling context clauses.
  43
  44    procedure Install_Private_With_Clauses (P : Entity_Id);
  45    --  Install the private with_clauses of a compilation unit, when compiling
  46    --  its private part, compiling a private child unit, or compiling the
  47    --  private declarations of a public child unit.
  48
  49    function Is_Legal_Shadow_Entity_In_Body (T : Entity_Id) return Boolean;
  50    --  Assuming that type T is an incomplete type coming from a limited with
  51    --  view, determine whether the package where T resides is imported through
  52    --  a regular with clause in the current package body.
  53
  54    procedure Remove_Context (N : Node_Id);
  55    --  Removes the entities from the context clause of the given compilation
  56    --  unit from the visibility chains. This is done on exit from a unit as
  57    --  part of cleaning up the visibility chains for the caller. A special
  58    --  case is that the call from the Main_Unit can be ignored, since at the
  59    --  end of the main unit the visibility table won't be needed in any case.
  60    --  For a child unit, remove parents and their context as well.
  61
  62    procedure Remove_Private_With_Clauses (Comp_Unit : Node_Id);
  63    --  The private_with_clauses of a compilation unit are visible in the
  64    --  private part of a nested package, even if this package appears in
  65    --  the visible part of the enclosing compilation unit. This Ada 2005
  66    --  rule imposes extra steps in order to install/remove the private_with
  67    --  clauses of an enclosing unit.
  68
  69    procedure Load_Needed_Body
  70      (N          : Node_Id;
  71       OK         : out Boolean;
  72       Do_Analyze : Boolean := True);
  73    --  Load and analyze the body of a context unit that is generic, or that
  74    --  contains generic units or inlined units. The body becomes part of the
  75    --  semantic dependency set of the unit that needs it. The returned result
  76    --  in OK is True if the load is successful, and False if the requested file
  77    --  cannot be found. If the flag Do_Analyze is false, the unit is loaded and
  78    --  parsed only. This allows a selective analysis in some inlining cases
  79    --  where a full analysis would lead so circularities in the back-end.
  80
  81 end Sem_Ch10;