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) 1992-2023, 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 Decorate_Type
  38      (Ent         : Entity_Id;
  39       Scop        : Entity_Id;
  40       Is_Tagged   : Boolean := False;
  41       Materialize : Boolean := False);
  42    --  Perform minimal decoration of a type or its corresponding shadow
  43    --  entity denoted by Ent. Scop is the proper scope. Flag Is_Tagged
  44    --  should be set when Ent is a tagged type. Flag Materialize should be
  45    --  set when Ent is a tagged type and its class-wide type needs to appear
  46    --  in the tree.
  47
  48    procedure Install_Context (N : Node_Id; Chain : Boolean := True);
  49    --  Installs the entities from the context clause of the given compilation
  50    --  unit into the visibility chains. This is done before analyzing a unit.
  51    --  For a child unit, install context of parents as well. The flag Chain is
  52    --  used to control the "chaining" or linking of use-type and use-package
  53    --  clauses to avoid circularities when reinstalling context clauses.
  54
  55    procedure Install_Private_With_Clauses (P : Entity_Id);
  56    --  Install the private with_clauses of a compilation unit, when compiling
  57    --  its private part, compiling a private child unit, or compiling the
  58    --  private declarations of a public child unit.
  59
  60    function Is_Legal_Shadow_Entity_In_Body (T : Entity_Id) return Boolean;
  61    --  Assuming that type T is an incomplete type coming from a limited with
  62    --  view, determine whether the package where T resides is imported through
  63    --  a regular with clause in the current package body.
  64
  65    function Is_Visible_Through_Renamings
  66      (P          : Entity_Id;
  67       Error_Node : Node_Id := Empty) return Boolean;
  68    --  Check if some package installed though normal with-clauses has a
  69    --  renaming declaration of package P. AARM 10.1.2(21/2). Errors are
  70    --  reported on Error_Node (if present); otherwise no error is reported.
  71
  72    procedure Load_Needed_Body
  73      (N  : Node_Id;
  74       OK : out Boolean);
  75    --  Load and analyze the body of a context unit that is generic, or that
  76    --  contains generic units or inlined units. The body becomes part of the
  77    --  semantic dependency set of the unit that needs it. The returned result
  78    --  in OK is True if the load is successful, and False if the requested file
  79    --  cannot be found.
  80
  81    procedure Remove_Context (N : Node_Id);
  82    --  Removes the entities from the context clause of the given compilation
  83    --  unit from the visibility chains. This is done on exit from a unit as
  84    --  part of cleaning up the visibility chains for the caller. A special
  85    --  case is that the call from the Main_Unit can be ignored, since at the
  86    --  end of the main unit the visibility table won't be needed in any case.
  87    --  For a child unit, remove parents and their context as well.
  88
  89    procedure Remove_Private_With_Clauses (Comp_Unit : Node_Id);
  90    --  The private_with_clauses of a compilation unit are visible in the
  91    --  private part of a nested package, even if this package appears in
  92    --  the visible part of the enclosing compilation unit. This Ada 2005
  93    --  rule imposes extra steps in order to install/remove the private_with
  94    --  clauses of an enclosing unit.
  95
  96 end Sem_Ch10;