-- --
-- B o d y --
-- --
--- Copyright (C) 1992-2005, 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 GNAT.Strings; use GNAT.Strings;
+with System.Strings; use System.Strings;
with Atree; use Atree;
with Checks;
with Exp_Dbug;
with Fmap;
with Fname.UF;
-with Hostparm; use Hostparm;
with Inline; use Inline;
with Lib; use Lib;
with Lib.Load; use Lib.Load;
with Nlists; use Nlists;
with Opt; use Opt;
with Osint;
-with Output; use Output;
with Par;
+with Prep;
with Prepcomp;
-with Rtsfind;
+with Restrict; use Restrict;
+with Rident; use Rident;
+with Rtsfind; use Rtsfind;
+with Snames; use Snames;
with Sprint;
with Scn; use Scn;
with Sem; use Sem;
+with Sem_Aux;
with Sem_Ch8; use Sem_Ch8;
+with Sem_SCIL;
with Sem_Elab; use Sem_Elab;
with Sem_Prag; use Sem_Prag;
with Sem_Warn; use Sem_Warn;
with Sinfo; use Sinfo;
with Sinput; use Sinput;
with Sinput.L; use Sinput.L;
+with Targparm; use Targparm;
with Tbuild; use Tbuild;
with Types; use Types;
procedure Frontend is
- Config_Pragmas : List_Id;
- -- Gather configuration pragmas
+ Config_Pragmas : List_Id;
+ -- Gather configuration pragmas
begin
- -- Carry out package initializations. These are initializations which
- -- might logically be performed at elaboration time, were it not for
- -- the fact that we may be doing things more than once in the big loop
- -- over files. Like elaboration, the order in which these calls are
- -- made is in some cases important. For example, Lib cannot be
- -- initialized until Namet, since it uses names table entries.
+ -- Carry out package initializations. These are initializations which might
+ -- logically be performed at elaboration time, were it not for the fact
+ -- that we may be doing things more than once in the big loop over files.
+ -- Like elaboration, the order in which these calls are made is in some
+ -- cases important. For example, Lib cannot be initialized before Namet,
+ -- since it uses names table entries.
Rtsfind.Initialize;
Atree.Initialize;
Nlists.Initialize;
Elists.Initialize;
Lib.Load.Initialize;
+ Sem_Aux.Initialize;
Sem_Ch8.Initialize;
+ Sem_Prag.Initialize;
Fname.UF.Initialize;
Checks.Initialize;
+ Sem_Warn.Initialize;
+ Prep.Initialize;
-- Create package Standard
end if;
-- Now that the preprocessing situation is established, we are able to
- -- load the main source (this is no longer done by Lib.Load.Initalize).
+ -- load the main source (this is no longer done by Lib.Load.Initialize).
Lib.Load.Load_Main_Source;
+ -- Return immediately if the main source could not be parsed
+
+ if Sinput.Main_Source_File = No_Source_File then
+ return;
+ end if;
+
-- Read and process configuration pragma files if present
declare
Opt.Style_Check := False;
Style_Check := False;
- Opt.Max_Line_Length := Int (Column_Number'Last);
-- Capture current suppress options, which may get modified
if Source_Config_File = No_Source_File then
Osint.Fail
- ("cannot find configuration pragmas file ",
- Config_File_Names (Index).all);
+ ("cannot find configuration pragmas file "
+ & Config_File_Names (Index).all);
end if;
Initialize_Scanner (No_Unit, Source_Config_File);
-- Restore style check, but if config file turned on checks, leave on!
Opt.Style_Check := Save_Style_Check or Style_Check;
- Opt.Max_Line_Length := Hostparm.Max_Line_Length;
-- Capture any modifications to suppress options from config pragmas
Fmap.Initialize (Mapping_File_Name.all);
end if;
+ -- Adjust Optimize_Alignment mode from debug switches if necessary
+
+ if Debug_Flag_Dot_SS then
+ Optimize_Alignment := 'S';
+ elsif Debug_Flag_Dot_TT then
+ Optimize_Alignment := 'T';
+ end if;
+
-- We have now processed the command line switches, and the gnat.adc
-- file, so this is the point at which we want to capture the values
-- of the configuration switches (see Opt for further details).
Opt.Register_Opt_Config_Switches;
+ -- Check for file which contains No_Body pragma
+
+ if Source_File_Is_No_Body (Source_Index (Main_Unit)) then
+ Change_Main_Unit_To_Spec;
+ end if;
+
-- Initialize the scanner. Note that we do this after the call to
-- Create_Standard, which uses the scanner in its processing of
-- floating-point bounds.
Initialize_Scanner (Main_Unit, Source_Index (Main_Unit));
- -- Output header if in verbose mode or full list mode
-
- if Verbose_Mode or Full_List then
- Write_Eol;
-
- if Operating_Mode = Generate_Code then
- Write_Str ("Compiling: ");
- else
- Write_Str ("Checking: ");
- end if;
-
- Write_Name (Full_File_Name (Current_Source_File));
-
- if not Debug_Flag_7 then
- Write_Str (" (source file time stamp: ");
- Write_Time_Stamp (Current_Source_File);
- Write_Char (')');
- end if;
-
- Write_Eol;
- end if;
-
-- Here we call the parser to parse the compilation unit (or units in
-- the check syntax mode, but in that case we won't go on to the
-- semantics in any case).
end;
end if;
+ -- If we have restriction No_Exception_Propagation, and we did not have an
+ -- explicit switch turning off Warn_On_Non_Local_Exception, then turn on
+ -- this warning by default if we have encountered an exception handler.
+
+ if Restriction_Active (No_Exception_Propagation)
+ and then not No_Warn_On_Non_Local_Exception
+ and then Exception_Handler_Encountered
+ then
+ Warn_On_Non_Local_Exception := True;
+ end if;
+
-- Now on to the semantics. Skip if in syntax only mode
if Operating_Mode /= Check_Syntax then
-- incorporate subunits at a lower level.
if Operating_Mode = Generate_Code
- and then Nkind (Unit (Cunit (Main_Unit))) = N_Subunit
+ and then Nkind (Unit (Cunit (Main_Unit))) = N_Subunit
then
Operating_Mode := Check_Semantics;
end if;
-- Cleanup processing after completing main analysis
if Operating_Mode = Generate_Code
- or else (Operating_Mode = Check_Semantics
- and then ASIS_Mode)
+ or else (Operating_Mode = Check_Semantics
+ and then ASIS_Mode)
then
Instantiate_Bodies;
end if;
Lib.List;
end if;
- -- Output any messages for unreferenced entities
+ -- Output waiting warning messages
- Output_Unreferenced_Messages;
+ Sem_Warn.Output_Non_Modified_In_Out_Warnings;
+ Sem_Warn.Output_Unreferenced_Messages;
Sem_Warn.Check_Unused_Withs;
+ Sem_Warn.Output_Unused_Warnings_Off_Warnings;
end if;
end if;
-- Qualify all entity names in inner packages, package bodies, etc.,
- -- except when compiling for the JVM back end, which depends on
+ -- except when compiling for the VM back-ends, which depend on
-- having unqualified names in certain cases and handles the
-- generation of qualified names when needed.
- if not Java_VM then
+ if VM_Target = No_VM then
Exp_Dbug.Qualify_All_Entity_Names;
end if;
+ -- SCIL backend requirement. Check that SCIL nodes associated with
+ -- dispatching calls reference subprogram calls.
+
+ if Generate_SCIL then
+ pragma Debug (Sem_SCIL.Check_SCIL_Nodes (Cunit (Main_Unit)));
+ null;
+ end if;
+
-- Dump the source now. Note that we do this as soon as the analysis
-- of the tree is complete, because it is not just a dump in the case
-- of -gnatD, where it rewrites all source locations in the tree.
Sprint.Source_Dump;
+ -- Check again for configuration pragmas that appear in the context of
+ -- the main unit. These pragmas only affect the main unit, and the
+ -- corresponding flag is reset after each call to Semantics, but they
+ -- may affect the generated ali for the unit, and therefore the flag
+ -- must be set properly after compilation. Currently we only check for
+ -- Initialize_Scalars, but others should be checked: as well???
+
+ declare
+ Item : Node_Id;
+
+ begin
+ Item := First (Context_Items (Cunit (Main_Unit)));
+ while Present (Item) loop
+ if Nkind (Item) = N_Pragma
+ and then Pragma_Name (Item) = Name_Initialize_Scalars
+ then
+ Initialize_Scalars := True;
+ end if;
+
+ Next (Item);
+ end loop;
+ end;
+
-- If a mapping file has been specified by a -gnatem switch, update
- -- it if there has been some sourcs that were not in the mappings.
+ -- it if there has been some sources that were not in the mappings.
if Mapping_File_Name /= null then
Fmap.Update_Mapping_File (Mapping_File_Name.all);
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