1------------------------------------------------------------------------------
2--                                                                          --
3--                         GNAT COMPILER COMPONENTS                         --
4--                                                                          --
5--                              S E M _ C H 7                               --
6--                                                                          --
7--                                 S p e c                                  --
8--                                                                          --
9--          Copyright (C) 1992-2013, 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
26with Types; use Types;
27
28package Sem_Ch7 is
29
30   procedure Analyze_Package_Body                       (N : Node_Id);
31   procedure Analyze_Package_Declaration                (N : Node_Id);
32   procedure Analyze_Package_Specification              (N : Node_Id);
33   procedure Analyze_Private_Type_Declaration           (N : Node_Id);
34
35   procedure Analyze_Package_Body_Contract (Body_Id : Entity_Id);
36   --  Analyze all delayed aspects chained on the contract of package body
37   --  Body_Id as if they appeared at the end of a declarative region. The
38   --  aspects that are considered are:
39   --    Refined_State
40
41   procedure Analyze_Package_Contract (Pack_Id : Entity_Id);
42   --  Analyze all delayed aspects chained on the contract of package Pack_Id
43   --  as if they appeared at the end of a declarative region. The aspects
44   --  that are considered are:
45   --    Initial_Condition
46   --    Initializes
47   --    Part_Of
48
49   procedure End_Package_Scope (P : Entity_Id);
50   --  Calls Uninstall_Declarations, and then pops the scope stack
51
52   procedure Exchange_Declarations (Id : Entity_Id);
53   --  Exchange private and full declaration on entry/exit from a package
54   --  declaration or body. The semantic links of the respective nodes
55   --  are preserved in the exchange.
56
57   procedure Install_Visible_Declarations (P : Entity_Id);
58   procedure Install_Private_Declarations (P : Entity_Id);
59
60   --  On entrance to a package body, make declarations in package spec
61   --  immediately visible.
62   --
63   --  When compiling the body of a package,  both routines are called in
64   --  succession. When compiling the body of a child package, the call
65   --  to Install_Private_Declaration is immediate for private children,
66   --  but is deferred until the compilation of the  private part of the
67   --  child for public child packages.
68
69   function Unit_Requires_Body
70     (P                     : Entity_Id;
71      Ignore_Abstract_State : Boolean := False) return Boolean;
72   --  Check if a unit requires a body. A specification requires a body if it
73   --  contains declarations that require completion in a body. If the flag
74   --  Ignore_Abstract_State is set True, then the test for a non-null abstract
75   --  state (which normally requires a body) is not carried out. This allows
76   --  the use of this routine to tell if there is some other reason that a
77   --  body is required (as is required for analyzing Abstract_State). This
78   --  is not currently used, but may be useful in future if we implement a
79   --  compatibility mode which warns about possible incompatibilities if a
80   --  SPARK 2014 program is compiled with a SPARK-unaware compiler.
81
82   procedure May_Need_Implicit_Body (E : Entity_Id);
83   --  If a package declaration contains tasks or RACWs and does not require
84   --  a body, create an implicit body at the end of the current declarative
85   --  part to activate those tasks or contain the bodies for the RACW
86   --  calling stubs.
87
88   procedure New_Private_Type (N : Node_Id; Id : Entity_Id; Def : Node_Id);
89   --  Common processing for private type declarations and for formal private
90   --  type declarations. For private types, N and Def are the type declaration
91   --  node; for formal private types, Def is the formal type definition.
92
93   procedure Uninstall_Declarations (P : Entity_Id);
94   --  At the end of a package declaration or body, declarations in the visible
95   --  part are no longer immediately visible, and declarations in the private
96   --  part are not visible at all. For inner packages, place visible entities
97   --  at the end of their homonym chains. For compilation units, make
98   --  all entities invisible. In both cases, exchange private and visible
99   --  declarations to restore order of elaboration.
100
101end Sem_Ch7;
102