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------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- B U T I L --
-- --
-- S p e c --
-- --
-- Copyright (C) 1992-2024, 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 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 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. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
-- This package contains utility routines for the binder
with Namet; use Namet;
with Types; use Types;
package Butil is
function Is_Predefined_Unit return Boolean;
-- Given a unit name stored in Name_Buffer with length in Name_Len,
-- returns True if this is the name of a predefined unit or a child of
-- a predefined unit (including the obsolescent renamings). This is used
-- in the preference selection (see Better_Choice in body of Binde).
function Is_Internal_Unit return Boolean;
-- Given a unit name stored in Name_Buffer with length in Name_Len,
-- returns True if this is the name of an internal unit or a child of
-- an internal unit. Similar in usage to Is_Predefined_Unit.
-- Note: the following functions duplicate functionality in Uname, but
-- we want to avoid bringing Uname into the binder since it generates
-- to many unnecessary dependencies, and makes the binder too large.
function Uname_Less (U1, U2 : Unit_Name_Type) return Boolean;
-- Determines if the unit name U1 is alphabetically before U2
procedure Write_Unit_Name (U : Unit_Name_Type);
-- Output unit name with (body) or (spec) after as required. On return
-- Name_Len is set to the number of characters which were output.
---------------
-- Iterators --
---------------
-- The following type represents an iterator over all units that are
-- specified in the forced-elaboration-order file supplied by the binder
-- via switch -f.
type Forced_Units_Iterator is private;
function Has_Next (Iter : Forced_Units_Iterator) return Boolean;
pragma Inline (Has_Next);
-- Determine whether iterator Iter has more units to examine
function Iterate_Forced_Units return Forced_Units_Iterator;
pragma Inline (Iterate_Forced_Units);
-- Obtain an iterator over all units in the forced-elaboration-order file
procedure Next
(Iter : in out Forced_Units_Iterator;
Unit_Name : out Unit_Name_Type;
Unit_Line : out Logical_Line_Number);
pragma Inline (Next);
-- Return the current unit referenced by iterator Iter along with the
-- line number it appears on, and advance to the next available unit.
private
First_Line_Number : constant Logical_Line_Number := No_Line_Number + 1;
type Forced_Units_Iterator is record
Order : String_Ptr := null;
-- A reference to the contents of the forced-elaboration-order file,
-- read in as a string.
Order_Index : Positive := 1;
-- Index into the order string
Order_Line : Logical_Line_Number := First_Line_Number;
-- Logical line number within the order string
Unit_Line : Logical_Line_Number := No_Line_Number;
-- The logical line number of the current unit name within the order
-- string.
Unit_Name : Unit_Name_Type := No_Unit_Name;
-- The current unit name parsed from the order string
end record;
end Butil;
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