New Language: Ada

From-SVN: r45959

1 files changed, 109 insertions, 0 deletions

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+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+--                             S E M _ C H 1 2                              --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--                            $Revision: 1.19 $
+--                                                                          --
+--          Copyright (C) 1992-2000 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 2,  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 COPYING.  If not, write --
+-- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
+-- MA 02111-1307, USA.                                                      --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
+--                                                                          --
+------------------------------------------------------------------------------
+
+with Inline; use Inline;
+with Types;  use Types;
+
+package Sem_Ch12 is
+   procedure Analyze_Generic_Package_Declaration        (N : Node_Id);
+   procedure Analyze_Generic_Subprogram_Declaration     (N : Node_Id);
+   procedure Analyze_Package_Instantiation              (N : Node_Id);
+   procedure Analyze_Procedure_Instantiation            (N : Node_Id);
+   procedure Analyze_Function_Instantiation             (N : Node_Id);
+   procedure Analyze_Formal_Object_Declaration          (N : Node_Id);
+   procedure Analyze_Formal_Type_Declaration            (N : Node_Id);
+   procedure Analyze_Formal_Subprogram                  (N : Node_Id);
+   procedure Analyze_Formal_Package                     (N : Node_Id);
+
+   procedure Start_Generic;
+   --  Must be invoked before starting to process a generic spec or body.
+
+   procedure End_Generic;
+   --  Must be invoked just at the end of the end of the processing of a
+   --  generic spec or body.
+
+   procedure Check_Generic_Child_Unit
+     (Gen_Id           : Node_Id;
+      Parent_Installed : in out Boolean);
+   --  If the name of the generic unit in an instantiation or a renaming
+   --  is a selected component, then the prefix may be an instance and the
+   --  selector may  designate a child unit. Retrieve the parent generic
+   --  and search for the child unit that must be declared within. Similarly,
+   --  if this is the name of a generic child unit within an instantiation of
+   --  its own parent, retrieve the parent generic.
+
+   function Copy_Generic_Node
+     (N             : Node_Id;
+      Parent_Id     : Node_Id;
+      Instantiating : Boolean)
+      return          Node_Id;
+   --  Copy the tree for a generic unit or its body. The unit is copied
+   --  repeatedly: once to produce a copy on which semantic analysis of
+   --  the generic is performed, and once for each instantiation. The tree
+   --  being copied is not semantically analyzed, except that references to
+   --  global entities are marked on terminal nodes.
+
+   function Get_Instance_Of (A : Entity_Id) return Entity_Id;
+   --  Retrieve actual associated with given generic parameter.
+   --  If A is uninstantiated or not a generic parameter, return A.
+
+   procedure Instantiate_Package_Body
+     (Body_Info : Pending_Body_Info);
+   --  Called after semantic analysis, to complete the instantiation of
+   --  package instances.
+
+   procedure Instantiate_Subprogram_Body
+     (Body_Info : Pending_Body_Info);
+   --  Called after semantic analysis, to complete the instantiation of
+   --  function and procedure instances.
+
+   procedure Save_Global_References (N : Node_Id);
+   --  Traverse the original generic unit, and capture all references to
+   --  entities that are defined outside of the generic in the analyzed
+   --  tree for the template. These references are copied into the original
+   --  tree, so that they appear automatically in  every instantiation.
+   --  A critical invariant in this approach is that if an id in the generic
+   --  resolves to a local entity, the corresponding id in the instance
+   --  will resolve to the homologous entity in the instance, even though
+   --  the enclosing context for resolution is different, as long as the
+   --  global references have been captured as described here.
+
+   --  Because instantiations can be nested, the environment of the instance,
+   --  involving the actuals and other data-structures, must be saved and
+   --  restored in stack-like fashion. Front-end inlining also uses these
+   --  structures for the management of private/full views.
+
+   procedure Set_Copied_Sloc (N : Node_Id; E : Entity_Id);
+
+   procedure Save_Env
+     (Gen_Unit : Entity_Id;
+      Act_Unit : Entity_Id);
+
+   procedure Restore_Env;
+
+end Sem_Ch12;