-- --
-- S p e c --
-- --
--- $Revision: 1.14 $ --
--- --
--- Copyright (C) 1992-1998 Free Software Foundation, Inc. --
+-- Copyright (C) 1992-2009, 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- --
+-- ware Foundation; either version 3, 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. --
+-- or FITNESS FOR A PARTICULAR PURPOSE. --
+-- --
+-- As a special exception under Section 7 of GPL version 3, you are granted --
+-- additional permissions described in the GCC Runtime Library Exception, --
+-- version 3.1, as published by the Free Software Foundation. --
-- --
--- As a special exception, if other files instantiate generics from this --
--- unit, or you link this unit with other files to produce an executable, --
--- this unit does not by itself cause the resulting executable to be --
--- covered by the GNU General Public License. This exception does not --
--- however invalidate any other reasons why the executable file might be --
--- covered by the GNU Public License. --
+-- You should have received a copy of the GNU General Public License and --
+-- a copy of the GCC Runtime Library Exception along with this program; --
+-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
+-- <http://www.gnu.org/licenses/>. --
-- --
-- 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). --
+-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
procedure Lock;
-- Lock tables used for element lists before calling backend
+ procedure Unlock;
+ -- Unlock list tables, in cases where the back end needs to modify them
+
procedure Tree_Read;
- -- Initializes internal tables from current tree file using Tree_Read.
- -- Note that Initialize should not be called if Tree_Read is used.
- -- Tree_Read includes all necessary initialization.
+ -- Initializes internal tables from current tree file using the relevant
+ -- Table.Tree_Read routines. Note that Initialize should not be called if
+ -- Tree_Read is used. Tree_Read includes all necessary initialization.
procedure Tree_Write;
- -- Writes out internal tables to current tree file using Tree_Write
+ -- Writes out internal tables to current tree file using the relevant
+ -- Table.Tree_Write routines.
function Last_Elist_Id return Elist_Id;
-- Returns Id of last allocated element list header
function Elmts_Address return System.Address;
-- Return address of Elmts table (used in Back_End for Gigi call)
- function Node (Elmt : Elmt_Id) return Node_Id;
+ function Node (Elmt : Elmt_Id) return Node_Or_Entity_Id;
pragma Inline (Node);
-- Returns the value of a given list element. Returns Empty if Elmt
-- is set to No_Elmt.
function First_Elmt (List : Elist_Id) return Elmt_Id;
pragma Inline (First_Elmt);
- -- Obtains the first element of the given element list or, if the
- -- list has no items, then No_Elmt is returned.
+ -- Obtains the first element of the given element list or, if the list has
+ -- no items, then No_Elmt is returned.
function Last_Elmt (List : Elist_Id) return Elmt_Id;
pragma Inline (Last_Elmt);
- -- Obtains the last element of the given element list or, if the
- -- list has no items, then No_Elmt is returned.
+ -- Obtains the last element of the given element list or, if the list has
+ -- no items, then No_Elmt is returned.
function Next_Elmt (Elmt : Elmt_Id) return Elmt_Id;
pragma Inline (Next_Elmt);
-- This function determines if a given tree id references an element list
-- that contains no items.
- procedure Append_Elmt (Node : Node_Id; To : Elist_Id);
- -- Appends Node at the end of To, allocating a new element.
+ procedure Append_Elmt (N : Node_Or_Entity_Id; To : Elist_Id);
+ -- Appends N at the end of To, allocating a new element. N must be a
+ -- non-empty node or entity Id, and To must be an Elist (not No_Elist).
+
+ procedure Append_Unique_Elmt (N : Node_Or_Entity_Id; To : Elist_Id);
+ -- Like Append_Elmt, except that a check is made to see if To already
+ -- contains N and if so the call has no effect.
- procedure Prepend_Elmt (Node : Node_Id; To : Elist_Id);
- -- Appends Node at the beginning of To, allocating a new element.
+ procedure Prepend_Elmt (N : Node_Or_Entity_Id; To : Elist_Id);
+ -- Appends N at the beginning of To, allocating a new element
- procedure Insert_Elmt_After (Node : Node_Id; Elmt : Elmt_Id);
- -- Add a new element (Node) right after the pre-existing element Elmt
+ procedure Insert_Elmt_After (N : Node_Or_Entity_Id; Elmt : Elmt_Id);
+ -- Add a new element (N) right after the pre-existing element Elmt
-- It is invalid to call this subprogram with Elmt = No_Elmt.
- procedure Replace_Elmt (Elmt : Elmt_Id; New_Node : Node_Id);
+ procedure Replace_Elmt (Elmt : Elmt_Id; New_Node : Node_Or_Entity_Id);
pragma Inline (Replace_Elmt);
-- Causes the given element of the list to refer to New_Node, the node
-- which was previously referred to by Elmt is effectively removed from
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