-- --
-- S p e c --
-- --
--- --
--- Copyright (C) 1992-2001, 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. --
+-- Public License distributed with GNAT; see file COPYING3. If not, go to --
+-- http://www.gnu.org/licenses for a complete copy of the license. --
-- --
-- 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 Initialize;
+ -- Initialize internal tables
+
+ procedure Initialize_Version (U : Unit_Number_Type);
+ -- This is called once the source file corresponding to unit U has been
+ -- fully scanned. At that point the checksum is computed, and can be used
+ -- to initialize the version number.
+
+ procedure Load_Main_Source;
-- Called at the start of compiling a new main source unit to initialize
-- the library processing for the new main source. Establishes and
-- initializes the units table entry for the new main unit (leaving
-- more files. Otherwise the main source file has been opened and read
-- and then closed on return.
- procedure Initialize_Version (U : Unit_Number_Type);
- -- This is called once the source file corresponding to unit U has been
- -- fully scanned. At that point the checksum is computed, and can be used
- -- to initialize the version number.
-
function Load_Unit
- (Load_Name : Unit_Name_Type;
- Required : Boolean;
- Error_Node : Node_Id;
- Subunit : Boolean;
- Corr_Body : Unit_Number_Type := No_Unit;
- Renamings : Boolean := False)
- return Unit_Number_Type;
+ (Load_Name : Unit_Name_Type;
+ Required : Boolean;
+ Error_Node : Node_Id;
+ Subunit : Boolean;
+ Corr_Body : Unit_Number_Type := No_Unit;
+ Renamings : Boolean := False;
+ With_Node : Node_Id := Empty) return Unit_Number_Type;
-- This function loads and parses the unit specified by Load_Name (or
-- returns the unit number for the previously constructed units table
-- entry if this is not the first call for this unit). Required indicates
-- described in the documentation of this unit. If this parameter is
-- set to True, then Load_Name may not be the real unit name and it
-- is necessary to load parents to find the real name.
+ --
+ -- With_Node is set to the with_clause or limited_with_clause causing
+ -- the unit to be loaded, and is used to bypass the circular dependency
+ -- check in the case of a limited_with_clause (Ada 2005, AI-50217).
+
+ procedure Change_Main_Unit_To_Spec;
+ -- This procedure is called if the main unit file contains a No_Body pragma
+ -- and no other tokens. The effect is, if possible, to change the main unit
+ -- from the body it references now, to the corresponding spec. This has the
+ -- effect of ignoring the body, which is what we want. If it is impossible
+ -- to successfully make the change, then the call has no effect, and the
+ -- file is unchanged (this will lead to an error complaining about the
+ -- inappropriate No_Body spec).
function Create_Dummy_Package_Unit
(With_Node : Node_Id;
- Spec_Name : Unit_Name_Type)
- return Unit_Number_Type;
+ Spec_Name : Unit_Name_Type) return Unit_Number_Type;
-- With_Node is the Node_Id of a with statement for which the file could
-- not be found, and Spec_Name is the corresponding unit name. This call
-- creates a dummy package unit so that compilation can continue without
-- blowing up when the missing unit is referenced.
- procedure Make_Instance_Unit (N : Node_Id);
+ procedure Make_Child_Decl_Unit (N : Node_Id);
+ -- For a child subprogram body without a spec, we create a subprogram
+ -- declaration in order to attach the required parent link. We create
+ -- a Units_Table entry for this declaration, in order to maintain a
+ -- one-to-one correspondence between compilation units and table entries.
+
+ procedure Make_Instance_Unit (N : Node_Id; In_Main : Boolean);
-- When a compilation unit is an instantiation, it contains both the
-- declaration and the body of the instance, each of which can have its
-- own elaboration routine. The file itself corresponds to the declaration.
-- We create an additional entry for the body, so that the binder can
-- generate the proper elaboration calls to both. The argument N is the
-- compilation unit node created for the body.
+ --
+ -- If the instance is not the main program, we still generate the instance
+ -- body even though we do not generate code for it. In that case we still
+ -- generate a compilation unit node for it, and we need to make an entry
+ -- for it in the units table, so as to maintain a one-to-one mapping
+ -- between table and nodes. The table entry is used among other things to
+ -- provide a canonical traversal order for context units for Inspector.
+ -- The flag In_Main indicates whether the instance is the main unit.
procedure Version_Update (U : Node_Id; From : Node_Id);
-- This routine is called when unit U is found to be semantically
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