-- --
-- B o d y --
-- --
--- Copyright (C) 1992-2007, 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, 51 Franklin Street, Fifth Floor, --
--- Boston, MA 02110-1301, 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. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
with Butil; use Butil;
with Debug; use Debug;
with Fname; use Fname;
-with Lib; use Lib;
with Namet; use Namet;
with Opt; use Opt;
+with Osint;
with Output; use Output;
with Targparm; use Targparm;
+with System.Case_Util; use System.Case_Util;
+
package body Binde is
-- The following data structures are used to represent the graph that is
-- Prefer a waiting body to any other case
- if Is_Waiting_Body (U1) and not Is_Waiting_Body (U2) then
+ if Is_Waiting_Body (U1) and then not Is_Waiting_Body (U2) then
if Debug_Flag_B then
Write_Line (" True: u1 is waiting body, u2 is not");
end if;
return True;
- elsif Is_Waiting_Body (U2) and not Is_Waiting_Body (U1) then
+ elsif Is_Waiting_Body (U2) and then not Is_Waiting_Body (U1) then
if Debug_Flag_B then
Write_Line (" False: u2 is waiting body, u1 is not");
end if;
-- Prefer a predefined unit to a non-predefined unit
- elsif UT1.Predefined and not UT2.Predefined then
+ elsif UT1.Predefined and then not UT2.Predefined then
if Debug_Flag_B then
Write_Line (" True: u1 is predefined, u2 is not");
end if;
return True;
- elsif UT2.Predefined and not UT1.Predefined then
+ elsif UT2.Predefined and then not UT1.Predefined then
if Debug_Flag_B then
Write_Line (" False: u2 is predefined, u1 is not");
end if;
-- Prefer an internal unit to a non-internal unit
- elsif UT1.Internal and not UT2.Internal then
+ elsif UT1.Internal and then not UT2.Internal then
if Debug_Flag_B then
Write_Line (" True: u1 is internal, u2 is not");
end if;
return True;
- elsif UT2.Internal and not UT1.Internal then
+ elsif UT2.Internal and then not UT1.Internal then
if Debug_Flag_B then
Write_Line (" False: u2 is internal, u1 is not");
end if;
-- Prefer a body to a spec
- elsif Is_Body_Unit (U1) and not Is_Body_Unit (U2) then
+ elsif Is_Body_Unit (U1) and then not Is_Body_Unit (U2) then
if Debug_Flag_B then
Write_Line (" True: u1 is body, u2 is not");
end if;
return True;
- elsif Is_Body_Unit (U2) and not Is_Body_Unit (U1) then
+ elsif Is_Body_Unit (U2) and then not Is_Body_Unit (U1) then
if Debug_Flag_B then
Write_Line (" False: u2 is body, u1 is not");
end if;
Units.Table (Before).First_With .. Units.Table (Before).Last_With
loop
-- Skip if this with is an interface to a stand-alone library.
- -- Skip also if no ALI file for this with, happens with certain
- -- specialized generic files that do not get compiled.
+ -- Skip also if no ALI file for this WITH, happens for language
+ -- defined generics while bootstrapping the compiler (see body of
+ -- Lib.Writ.Write_With_Lines). Finally, skip if it is a limited
+ -- with clause, which does not impose an elaboration link.
if not Withs.Table (W).SAL_Interface
and then Withs.Table (W).Afile /= No_File
- and then Generic_Separately_Compiled (Withs.Table (W).Sfile)
+ and then not Withs.Table (W).Limited_With
then
- Elab_All_Links
- (Unit_Id_Of (Withs.Table (W).Uname),
- After,
- Reason,
- Make_Elab_Entry (Withs.Table (W).Uname, Link));
+ declare
+ Info : constant Int :=
+ Get_Name_Table_Info
+ (Withs.Table (W).Uname);
+
+ begin
+ -- If the unit is unknown, for some unknown reason, fail
+ -- graciously explaining that the unit is unknown. Without
+ -- this check, gnatbind will crash in Unit_Id_Of.
+
+ if Info = 0 or else Unit_Id (Info) = No_Unit_Id then
+ declare
+ Withed : String :=
+ Get_Name_String (Withs.Table (W).Uname);
+ Last_Withed : Natural := Withed'Last;
+ Withing : String :=
+ Get_Name_String
+ (Units.Table (Before).Uname);
+ Last_Withing : Natural := Withing'Last;
+ Spec_Body : String := " (Spec)";
+
+ begin
+ To_Mixed (Withed);
+ To_Mixed (Withing);
+
+ if Last_Withed > 2 and then
+ Withed (Last_Withed - 1) = '%'
+ then
+ Last_Withed := Last_Withed - 2;
+ end if;
+
+ if Last_Withing > 2 and then
+ Withing (Last_Withing - 1) = '%'
+ then
+ Last_Withing := Last_Withing - 2;
+ end if;
+
+ if Units.Table (Before).Utype = Is_Body or else
+ Units.Table (Before).Utype = Is_Body_Only
+ then
+ Spec_Body := " (Body)";
+ end if;
+
+ Osint.Fail
+ ("could not find unit "
+ & Withed (Withed'First .. Last_Withed) & " needed by "
+ & Withing (Withing'First .. Last_Withing) & Spec_Body);
+ end;
+ end if;
+
+ Elab_All_Links
+ (Unit_Id_Of (Withs.Table (W).Uname),
+ After,
+ Reason,
+ Make_Elab_Entry (Withs.Table (W).Uname, Link));
+ end;
end if;
end loop;
Make_Elab_Entry
(Withs.Table (W).Uname, No_Elab_All_Link));
- -- Elaborate_All_Desirable case, for this we establish
- -- the same links as above, but with a different reason.
+ -- Elaborate_All_Desirable case, for this we establish the
+ -- same links as above, but with a different reason.
elsif Withs.Table (W).Elab_All_Desirable then
Make_Elab_Entry
(Withs.Table (W).Uname, No_Elab_All_Link));
- -- Pragma Elaborate case. We must build a link for the
- -- withed unit itself, and also the corresponding body
- -- if there is one.
+ -- Pragma Elaborate case. We must build a link for the
+ -- withed unit itself, and also the corresponding body if
+ -- there is one.
- -- However, skip this processing if there is no ALI file
- -- for the WITH entry, because this means it is a
- -- generic (even when we fix the generics so that an ALI
- -- file is present, we probably still will have no ALI
- -- file for unchecked and other special cases).
+ -- However, skip this processing if there is no ALI file for
+ -- the WITH entry, because this means it is a generic (even
+ -- when we fix the generics so that an ALI file is present,
+ -- we probably still will have no ALI file for unchecked and
+ -- other special cases).
elsif Withs.Table (W).Elaborate
and then Withs.Table (W).Afile /= No_File
(Corresponding_Body (Withed_Unit), U, Elab);
end if;
- -- Elaborate_Desirable case, for this we establish
- -- the same links as above, but with a different reason.
+ -- Elaborate_Desirable case, for this we establish
+ -- the same links as above, but with a different reason.
elsif Withs.Table (W).Elab_Desirable then
Build_Link (Withed_Unit, U, Withed);
U, Elab_Desirable);
end if;
- -- Case of normal WITH with no elaboration pragmas, just
- -- build the single link to the directly referenced unit
+ -- A limited_with does not establish an elaboration
+ -- dependence (that's the whole point!).
+
+ elsif Withs.Table (W).Limited_With then
+ null;
+
+ -- Case of normal WITH with no elaboration pragmas, just
+ -- build the single link to the directly referenced unit
else
Build_Link (Withed_Unit, U, Withed);
-- Prefer anything else to a waiting body (!)
- elsif Is_Waiting_Body (U1) and not Is_Waiting_Body (U2) then
+ elsif Is_Waiting_Body (U1) and then not Is_Waiting_Body (U2) then
return False;
- elsif Is_Waiting_Body (U2) and not Is_Waiting_Body (U1) then
+ elsif Is_Waiting_Body (U2) and then not Is_Waiting_Body (U1) then
return True;
-- Prefer a spec to a body (!)
- elsif Is_Body_Unit (U1) and not Is_Body_Unit (U2) then
+ elsif Is_Body_Unit (U1) and then not Is_Body_Unit (U2) then
return False;
- elsif Is_Body_Unit (U2) and not Is_Body_Unit (U1) then
+ elsif Is_Body_Unit (U2) and then not Is_Body_Unit (U1) then
return True;
-- If both are waiting bodies, then prefer the one whose spec is
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