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|
-- GHDL driver - main part.
-- Copyright (C) 2002 - 2010 Tristan Gingold
--
-- GHDL is free software; you can redistribute it and/or modify it under
-- the terms of the GNU General Public License as published by the Free
-- Software Foundation; either version 2, or (at your option) any later
-- version.
--
-- GHDL is distributed in the hope that it will be useful, but WITHOUT 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
-- along with GCC; see the file COPYING. If not, write to the Free
-- Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-- 02111-1307, USA.
with Ada.Text_IO;
with Ada.Command_Line;
with Ada.Command_Line.Response_File;
with Version;
with Bug;
with Options;
with Types; use Types;
package body Ghdlmain is
procedure Init (Cmd : in out Command_Type)
is
pragma Unreferenced (Cmd);
begin
null;
end Init;
procedure Decode_Option (Cmd : in out Command_Type;
Option : String;
Arg : String;
Res : out Option_Res)
is
pragma Unreferenced (Cmd);
pragma Unreferenced (Option);
pragma Unreferenced (Arg);
begin
Res := Option_Bad;
end Decode_Option;
procedure Disp_Long_Help (Cmd : Command_Type)
is
pragma Unreferenced (Cmd);
use Ada.Text_IO;
begin
Put_Line ("This command does not accept options.");
end Disp_Long_Help;
First_Cmd : Command_Acc := null;
Last_Cmd : Command_Acc := null;
procedure Register_Command (Cmd : Command_Acc) is
begin
if First_Cmd = null then
First_Cmd := Cmd;
else
Last_Cmd.Next := Cmd;
end if;
Last_Cmd := Cmd;
end Register_Command;
-- Find the command.
function Find_Command (Action : String) return Command_Acc
is
Cmd : Command_Acc;
begin
Cmd := First_Cmd;
while Cmd /= null loop
if Decode_Command (Cmd.all, Action) then
return Cmd;
end if;
Cmd := Cmd.Next;
end loop;
return null;
end Find_Command;
-- Command help.
type Command_Help is new Command_Type with null record;
function Decode_Command (Cmd : Command_Help; Name : String) return Boolean;
procedure Decode_Option (Cmd : in out Command_Help;
Option : String;
Arg : String;
Res : out Option_Res);
function Get_Short_Help (Cmd : Command_Help) return String;
procedure Perform_Action (Cmd : in out Command_Help; Args : Argument_List);
function Decode_Command (Cmd : Command_Help; Name : String) return Boolean
is
pragma Unreferenced (Cmd);
begin
return Name = "-h" or else Name = "--help";
end Decode_Command;
procedure Decode_Option (Cmd : in out Command_Help;
Option : String;
Arg : String;
Res : out Option_Res)
is
pragma Unreferenced (Cmd);
pragma Unreferenced (Option);
pragma Unreferenced (Arg);
begin
Res := Option_End;
end Decode_Option;
function Get_Short_Help (Cmd : Command_Help) return String
is
pragma Unreferenced (Cmd);
begin
return "-h or --help [CMD] Disp this help or [help on CMD]";
end Get_Short_Help;
procedure Perform_Action (Cmd : in out Command_Help; Args : Argument_List)
is
pragma Unreferenced (Cmd);
use Ada.Text_IO;
use Ada.Command_Line;
C : Command_Acc;
begin
if Args'Length = 0 then
Put_Line ("usage: " & Command_Name & " COMMAND [OPTIONS] ...");
Put_Line ("COMMAND is one of:");
C := First_Cmd;
while C /= null loop
declare
S : constant String := Get_Short_Help (C.all);
begin
if S'Length > 1 and then S (S'First) /= '!' then
Put_Line (S);
end if;
end;
C := C.Next;
end loop;
New_Line;
Put_Line ("To display the options of a GHDL program,");
Put_Line (" run your program with the --help option.");
Put_Line ("Also see --options-help for analyzer options.");
New_Line;
Put_Line ("Please, refer to the GHDL manual for more information.");
Put_Line ("Report issues on https://github.com/ghdl/ghdl");
elsif Args'Length = 1 then
C := Find_Command (Args (1).all);
if C = null then
Error ("Command '" & Args (1).all & "' is unknown.");
raise Option_Error;
end if;
Put_Line (Get_Short_Help (C.all));
Disp_Long_Help (C.all);
else
Error ("Command '--help' accepts at most one argument.");
raise Option_Error;
end if;
end Perform_Action;
-- Command options help.
type Command_Option_Help is new Command_Type with null record;
function Decode_Command (Cmd : Command_Option_Help; Name : String)
return Boolean;
function Get_Short_Help (Cmd : Command_Option_Help) return String;
procedure Perform_Action (Cmd : in out Command_Option_Help;
Args : Argument_List);
function Decode_Command (Cmd : Command_Option_Help; Name : String)
return Boolean
is
pragma Unreferenced (Cmd);
begin
return Name = "--options-help";
end Decode_Command;
function Get_Short_Help (Cmd : Command_Option_Help) return String
is
pragma Unreferenced (Cmd);
begin
return "--options-help Disp help for analyzer options";
end Get_Short_Help;
procedure Perform_Action (Cmd : in out Command_Option_Help;
Args : Argument_List)
is
pragma Unreferenced (Cmd);
begin
if Args'Length /= 0 then
Error
("warning: command '--option-help' does not accept any argument");
end if;
Options.Disp_Options_Help;
end Perform_Action;
-- Command Version
type Command_Version is new Command_Type with null record;
function Decode_Command (Cmd : Command_Version; Name : String)
return Boolean;
function Get_Short_Help (Cmd : Command_Version) return String;
procedure Perform_Action (Cmd : in out Command_Version;
Args : Argument_List);
function Decode_Command (Cmd : Command_Version; Name : String)
return Boolean
is
pragma Unreferenced (Cmd);
begin
return Name = "-v" or Name = "--version";
end Decode_Command;
function Get_Short_Help (Cmd : Command_Version) return String
is
pragma Unreferenced (Cmd);
begin
return "-v or --version Disp ghdl version";
end Get_Short_Help;
procedure Perform_Action (Cmd : in out Command_Version;
Args : Argument_List)
is
pragma Unreferenced (Cmd);
use Ada.Text_IO;
begin
Put ("GHDL ");
Put (Version.Ghdl_Ver);
Put (' ');
Put_Line (Version.Ghdl_Release);
Put_Line (" Compiled with " & Bug.Get_Gnat_Version);
if Version_String /= null then
Put (" ");
Put (Version_String.all);
end if;
New_Line;
Put_Line ("Written by Tristan Gingold.");
New_Line;
-- Display copyright. Assume 80 cols terminal.
Put_Line ("Copyright (C) 2003 - 2015 Tristan Gingold.");
Put_Line ("GHDL is free software, covered by the "
& "GNU General Public License. There is NO");
Put_Line ("warranty; not even for MERCHANTABILITY or"
& " FITNESS FOR A PARTICULAR PURPOSE.");
if Args'Length /= 0 then
Error ("warning: command '--version' does not accept any argument");
end if;
end Perform_Action;
-- Disp MSG on the standard output with the command name.
procedure Error (Msg : String)
is
use Errorout;
begin
Report_Msg (Msgid_Error, Option, No_Location, Msg);
end Error;
procedure Warning (Msg : String)
is
use Errorout;
begin
Report_Msg (Msgid_Warning, Option, No_Location, Msg);
end Warning;
procedure Main
is
use Ada.Command_Line;
Cmd : Command_Acc;
Cmd_Name : String_Access;
Args : String_List_Access;
Arg_Index : Natural;
First_Arg : Natural;
begin
-- Set program name for error message.
Errorout.Set_Program_Name (Command_Name);
-- Handle case of no argument
if Argument_Count = 0 then
Error ("missing command, try " & Command_Name & " --help");
raise Option_Error;
end if;
Args := new String_List (1 .. Argument_Count);
for I in Args'Range loop
Args (I) := new String'(Argument (I));
pragma Assert (Args (I)'First = 1);
end loop;
-- Expand response files
Arg_Index := 1;
while Arg_Index <= Args'Last loop
if Args (Arg_Index).all (1) = '@' then
declare
Rsp_Arg : constant String_Access := Args (Arg_Index);
Rsp_File : constant String := Rsp_Arg (2 .. Rsp_Arg'Last);
begin
declare
Exp_Args : constant GNAT.OS_Lib.Argument_List :=
Response_File.Arguments_From (Rsp_File);
Exp_Length : constant Natural := Exp_Args'Length;
New_Args : String_List_Access;
begin
New_Args :=
new String_List (1 .. Args'Last + Exp_Length - 1);
New_Args (1 .. Arg_Index - 1) := Args (1 .. Arg_Index - 1);
New_Args (Arg_Index .. Arg_Index + Exp_Length - 1) :=
Exp_Args;
New_Args (Arg_Index + Exp_Length .. New_Args'Last) :=
Args (Arg_Index + 1 .. Args'Last);
Free (Args);
Args := New_Args;
Arg_Index := Arg_Index + Exp_Length;
end;
exception
when Response_File.File_Does_Not_Exist =>
Error ("cannot open response file '" & Rsp_File & "'");
raise Option_Error;
end;
else
Arg_Index := Arg_Index + 1;
end if;
end loop;
-- Decode command.
Cmd_Name := Args (1);
Cmd := Find_Command (Cmd_Name.all);
if Cmd = null then
Error ("unknown command '" & Cmd_Name.all & "', try --help");
raise Option_Error;
end if;
Init (Cmd.all);
-- Decode options.
First_Arg := 0;
Arg_Index := 2;
while Arg_Index <= Args'Last loop
declare
Arg : constant String_Access := Args (Arg_Index);
Res : Option_Res;
begin
if Arg (1) = '-' then
-- Argument is an option.
if First_Arg > 0 then
Error ("options after file");
raise Option_Error;
end if;
Decode_Option (Cmd.all, Arg.all, "", Res);
case Res is
when Option_Bad =>
Error ("unknown option '" & Arg.all & "' for command '"
& Cmd_Name.all & "'");
raise Option_Error;
when Option_Err =>
raise Option_Error;
when Option_Ok =>
Arg_Index := Arg_Index + 1;
when Option_Arg_Req =>
if Arg_Index + 1 > Argument_Count then
Error
("option '" & Arg.all & "' requires an argument");
raise Option_Error;
end if;
Decode_Option
(Cmd.all, Arg.all, Args (Arg_Index + 1).all, Res);
if Res /= Option_Arg then
raise Program_Error;
end if;
Arg_Index := Arg_Index + 2;
when Option_Arg =>
raise Program_Error;
when Option_End =>
First_Arg := Arg_Index;
exit;
end case;
else
First_Arg := Arg_Index;
exit;
end if;
end;
end loop;
if First_Arg = 0 then
First_Arg := Argument_Count + 1;
end if;
-- Set before running the action, so that it can be changed.
Set_Exit_Status (Success);
declare
Cmd_Args : Argument_List (1 .. Args'Last - First_Arg + 1);
begin
for I in Cmd_Args'Range loop
Cmd_Args (I) := Args (First_Arg + I - 1);
end loop;
Perform_Action (Cmd.all, Cmd_Args);
end;
for I in Args'Range loop
Free (Args (I));
end loop;
Free (Args);
--if Flags.Dump_Stats then
-- Name_Table.Disp_Stats;
-- Iirs.Disp_Stats;
--end if;
exception
when Option_Error
| Compile_Error
| Errorout.Compilation_Error =>
Set_Exit_Status (Failure);
when Exec_Error =>
Set_Exit_Status (3);
when E: others =>
Bug.Disp_Bug_Box (E);
Set_Exit_Status (2);
end Main;
procedure Register_Commands is
begin
Register_Command (new Command_Help);
Register_Command (new Command_Version);
Register_Command (new Command_Option_Help);
end Register_Commands;
end Ghdlmain;
|