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------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- S W I T C H - B --
-- --
-- B o d y --
-- --
-- Copyright (C) 2001-2005, 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- --
-- 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. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
with Debug; use Debug;
with Osint; use Osint;
with Opt; use Opt;
with System.WCh_Con; use System.WCh_Con;
package body Switch.B is
--------------------------
-- Scan_Binder_Switches --
--------------------------
procedure Scan_Binder_Switches (Switch_Chars : String) is
Max : constant Integer := Switch_Chars'Last;
Ptr : Integer := Switch_Chars'First;
C : Character := ' ';
begin
-- Skip past the initial character (must be the switch character)
if Ptr = Max then
Bad_Switch (C);
else
Ptr := Ptr + 1;
end if;
-- A little check, "gnat" at the start of a switch is not allowed
-- except for the compiler
if Switch_Chars'Last >= Ptr + 3
and then Switch_Chars (Ptr .. Ptr + 3) = "gnat"
then
Osint.Fail ("invalid switch: """, Switch_Chars, """"
& " (gnat not needed here)");
end if;
-- Loop to scan through switches given in switch string
while Ptr <= Max loop
C := Switch_Chars (Ptr);
case C is
-- Processing for a switch
when 'a' =>
Ptr := Ptr + 1;
Use_Pragma_Linker_Constructor := True;
-- Processing for A switch
when 'A' =>
Ptr := Ptr + 1;
Ada_Bind_File := True;
-- Processing for b switch
when 'b' =>
Ptr := Ptr + 1;
Brief_Output := True;
-- Processing for c switch
when 'c' =>
Ptr := Ptr + 1;
Check_Only := True;
-- Processing for C switch
when 'C' =>
Ptr := Ptr + 1;
Ada_Bind_File := False;
-- Processing for d switch
when 'd' =>
-- Note: for the debug switch, the remaining characters in this
-- switch field must all be debug flags, since all valid switch
-- characters are also valid debug characters. This switch is not
-- documented on purpose because it is only used by the
-- implementors.
-- Loop to scan out debug flags
while Ptr < Max loop
Ptr := Ptr + 1;
C := Switch_Chars (Ptr);
exit when C = ASCII.NUL or else C = '/' or else C = '-';
if C in '1' .. '9' or else
C in 'a' .. 'z' or else
C in 'A' .. 'Z'
then
Set_Debug_Flag (C);
else
Bad_Switch (C);
end if;
end loop;
return;
-- Processing for D switch
when 'D' =>
Ptr := Ptr + 1;
Scan_Pos
(Switch_Chars, Max, Ptr, Default_Sec_Stack_Size, C);
-- Processing for e switch
when 'e' =>
Ptr := Ptr + 1;
Elab_Dependency_Output := True;
-- Processing for E switch
when 'E' =>
Ptr := Ptr + 1;
Exception_Tracebacks := True;
-- Processing for F switch
when 'F' =>
Ptr := Ptr + 1;
Force_Checking_Of_Elaboration_Flags := True;
-- Processing for g switch
when 'g' =>
Ptr := Ptr + 1;
if Ptr <= Max then
C := Switch_Chars (Ptr);
if C in '0' .. '3' then
Debugger_Level :=
Character'Pos
(Switch_Chars (Ptr)) - Character'Pos ('0');
Ptr := Ptr + 1;
end if;
else
Debugger_Level := 2;
end if;
-- Processing for h switch
when 'h' =>
Ptr := Ptr + 1;
Usage_Requested := True;
-- Processing for i switch
when 'i' =>
if Ptr = Max then
Bad_Switch (C);
end if;
Ptr := Ptr + 1;
C := Switch_Chars (Ptr);
if C in '1' .. '5'
or else C = '8'
or else C = 'p'
or else C = 'f'
or else C = 'n'
or else C = 'w'
then
Identifier_Character_Set := C;
Ptr := Ptr + 1;
else
Bad_Switch (C);
end if;
-- Processing for K switch
when 'K' =>
Ptr := Ptr + 1;
Output_Linker_Option_List := True;
-- Processing for l switch
when 'l' =>
Ptr := Ptr + 1;
Elab_Order_Output := True;
-- Processing for m switch
when 'm' =>
Ptr := Ptr + 1;
Scan_Pos (Switch_Chars, Max, Ptr, Maximum_Errors, C);
-- Processing for n switch
when 'n' =>
Ptr := Ptr + 1;
Bind_Main_Program := False;
-- Note: The -L option of the binder also implies -n, so
-- any change here must also be reflected in the processing
-- for -L that is found in Gnatbind.Scan_Bind_Arg.
-- Processing for o switch
when 'o' =>
Ptr := Ptr + 1;
if Output_File_Name_Present then
Osint.Fail ("duplicate -o switch");
else
Output_File_Name_Present := True;
end if;
-- Processing for O switch
when 'O' =>
Ptr := Ptr + 1;
Output_Object_List := True;
-- Processing for p switch
when 'p' =>
Ptr := Ptr + 1;
Pessimistic_Elab_Order := True;
-- Processing for q switch
when 'q' =>
Ptr := Ptr + 1;
Quiet_Output := True;
-- Processing for r switch
when 'r' =>
Ptr := Ptr + 1;
List_Restrictions := True;
-- Processing for s switch
when 's' =>
Ptr := Ptr + 1;
All_Sources := True;
Check_Source_Files := True;
-- Processing for t switch
when 't' =>
Ptr := Ptr + 1;
Tolerate_Consistency_Errors := True;
-- Processing for T switch
when 'T' =>
Ptr := Ptr + 1;
Time_Slice_Set := True;
Scan_Nat (Switch_Chars, Max, Ptr, Time_Slice_Value, C);
Time_Slice_Value := Time_Slice_Value * 1_000;
-- Processing for u switch
when 'u' =>
Ptr := Ptr + 1;
Dynamic_Stack_Measurement := True;
Scan_Nat
(Switch_Chars,
Max,
Ptr,
Dynamic_Stack_Measurement_Array_Size,
C);
-- Processing for v switch
when 'v' =>
Ptr := Ptr + 1;
Verbose_Mode := True;
-- Processing for w switch
when 'w' =>
-- For the binder we only allow suppress/error cases
Ptr := Ptr + 1;
case Switch_Chars (Ptr) is
when 'e' =>
Warning_Mode := Treat_As_Error;
when 's' =>
Warning_Mode := Suppress;
when others =>
Bad_Switch (C);
end case;
Ptr := Ptr + 1;
-- Processing for W switch
when 'W' =>
Ptr := Ptr + 1;
for J in WC_Encoding_Method loop
if Switch_Chars (Ptr) = WC_Encoding_Letters (J) then
Wide_Character_Encoding_Method := J;
exit;
elsif J = WC_Encoding_Method'Last then
Bad_Switch (C);
end if;
end loop;
Upper_Half_Encoding :=
Wide_Character_Encoding_Method in
WC_Upper_Half_Encoding_Method;
Ptr := Ptr + 1;
-- Processing for x switch
when 'x' =>
Ptr := Ptr + 1;
All_Sources := False;
Check_Source_Files := False;
-- Processing for X switch
when 'X' =>
Ptr := Ptr + 1;
Scan_Pos (Switch_Chars, Max, Ptr, Default_Exit_Status, C);
-- Processing for z switch
when 'z' =>
Ptr := Ptr + 1;
No_Main_Subprogram := True;
-- Ignore extra switch character
when '/' =>
Ptr := Ptr + 1;
-- Ignore '-' extra switch caracter, only if it isn't followed by
-- 'RTS'. If it is, then we must process the 'RTS' switch
when '-' =>
if Ptr + 3 <= Max and then
Switch_Chars (Ptr + 1 .. Ptr + 3) = "RTS"
then
Ptr := Ptr + 1;
if Switch_Chars (Ptr + 3) /= '=' or else
(Switch_Chars (Ptr + 3) = '='
and then Ptr + 4 > Max)
then
Osint.Fail ("missing path for --RTS");
else
-- valid --RTS switch
Opt.No_Stdinc := True;
Opt.RTS_Switch := True;
declare
Src_Path_Name : constant String_Ptr :=
Get_RTS_Search_Dir
(Switch_Chars
(Ptr + 4 .. Switch_Chars'Last),
Include);
Lib_Path_Name : constant String_Ptr :=
Get_RTS_Search_Dir
(Switch_Chars
(Ptr + 4 .. Switch_Chars'Last),
Objects);
begin
if Src_Path_Name /= null and then
Lib_Path_Name /= null
then
-- Set the RTS_*_Path_Name variables, so that the
-- correct directories will be set when
-- Osint.Add_Default_Search_Dirs will be called later.
RTS_Src_Path_Name := Src_Path_Name;
RTS_Lib_Path_Name := Lib_Path_Name;
-- We can exit as there cannot be another switch
-- after --RTS
exit;
elsif Src_Path_Name = null
and then Lib_Path_Name = null
then
Osint.Fail ("RTS path not valid: missing " &
"adainclude and adalib directories");
elsif Src_Path_Name = null then
Osint.Fail ("RTS path not valid: missing " &
"adainclude directory");
elsif Lib_Path_Name = null then
Osint.Fail ("RTS path not valid: missing " &
"adalib directory");
end if;
end;
end if;
else
Ptr := Ptr + 1;
end if;
-- Anything else is an error (illegal switch character)
when others =>
Bad_Switch (C);
end case;
end loop;
end Scan_Binder_Switches;
end Switch.B;
|