+++ /dev/null
-------------------------------------------------------------------------------
--- --
--- GNAT COMPILER COMPONENTS --
--- --
--- S W I T C H --
--- --
--- B o d y --
--- --
--- $Revision: 1.6.10.1 $
--- --
--- Copyright (C) 1992-2001, 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, 59 Temple Place - Suite 330, Boston, --
--- MA 02111-1307, USA. --
--- --
--- GNAT was originally developed by the GNAT team at New York University. --
--- Extensive contributions were provided by Ada Core Technologies Inc. --
--- --
-------------------------------------------------------------------------------
-
--- Option switch scanning for both the compiler and the binder
-
--- Note: this version of the package should be usable in both Unix and DOS
-
-with Debug; use Debug;
-with Osint; use Osint;
-with Opt; use Opt;
-with Validsw; use Validsw;
-with Stylesw; use Stylesw;
-with Types; use Types;
-
-with System.WCh_Con; use System.WCh_Con;
-
-package body Switch is
-
- Bad_Switch : exception;
- -- Exception raised if bad switch encountered
-
- Bad_Switch_Value : exception;
- -- Exception raised if bad switch value encountered
-
- Missing_Switch_Value : exception;
- -- Exception raised if no switch value encountered
-
- Too_Many_Output_Files : exception;
- -- Exception raised if the -o switch is encountered more than once
-
- Switch_Max_Value : constant := 999;
- -- Maximum value permitted in switches that take a value
-
- procedure Scan_Nat
- (Switch_Chars : String;
- Max : Integer;
- Ptr : in out Integer;
- Result : out Nat);
- -- Scan natural integer parameter for switch. On entry, Ptr points
- -- just past the switch character, on exit it points past the last
- -- digit of the integer value.
-
- procedure Scan_Pos
- (Switch_Chars : String;
- Max : Integer;
- Ptr : in out Integer;
- Result : out Pos);
- -- Scan positive integer parameter for switch. On entry, Ptr points
- -- just past the switch character, on exit it points past the last
- -- digit of the integer value.
-
- -------------------------
- -- Is_Front_End_Switch --
- -------------------------
-
- function Is_Front_End_Switch (Switch_Chars : String) return Boolean is
- Ptr : constant Positive := Switch_Chars'First;
- begin
- return Is_Switch (Switch_Chars)
- and then
- (Switch_Chars (Ptr + 1) = 'I'
- or else
- (Switch_Chars'Length >= 5
- and then Switch_Chars (Ptr + 1 .. Ptr + 4) = "gnat"));
- end Is_Front_End_Switch;
-
- ---------------
- -- Is_Switch --
- ---------------
-
- function Is_Switch (Switch_Chars : String) return Boolean is
- begin
- return Switch_Chars'Length > 1
- and then (Switch_Chars (Switch_Chars'First) = '-'
- or
- Switch_Chars (Switch_Chars'First) = Switch_Character);
- end Is_Switch;
-
- --------------------------
- -- Scan_Binder_Switches --
- --------------------------
-
- procedure Scan_Binder_Switches (Switch_Chars : String) is
- Ptr : Integer := Switch_Chars'First;
- Max : Integer := Switch_Chars'Last;
- C : Character := ' ';
-
- begin
- -- Skip past the initial character (must be the switch character)
-
- if Ptr = Max then
- raise Bad_Switch;
- 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;
-
- 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.
-
- -- 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
- raise Bad_Switch;
- end if;
- end loop;
-
- -- Make sure Zero_Cost_Exceptions is set if gnatdX set. This
- -- is for backwards compatibility with old versions and usage.
-
- if Debug_Flag_XX then
- Zero_Cost_Exceptions_Set := True;
- Zero_Cost_Exceptions_Val := True;
- end if;
-
- return;
-
- -- 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_RM_Elaboration_Order := 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 G switch
-
- when 'G' =>
- Ptr := Ptr + 1;
- Print_Generated_Code := True;
-
- -- Processing for h switch
-
- when 'h' =>
- Ptr := Ptr + 1;
- Usage_Requested := True;
-
- -- Processing for i switch
-
- when 'i' =>
- if Ptr = Max then
- raise Bad_Switch;
- 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
- raise Bad_Switch;
- end if;
-
- -- Processing for K switch
-
- when 'K' =>
- Ptr := Ptr + 1;
-
- if Program = Binder then
- Output_Linker_Option_List := True;
- else
- raise Bad_Switch;
- end if;
-
- -- 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);
-
- -- 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
- raise Too_Many_Output_Files;
-
- 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 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);
-
- -- 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 =>
- raise Bad_Switch;
- 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
- raise Bad_Switch;
- 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 z switch
-
- when 'z' =>
- Ptr := Ptr + 1;
- No_Main_Subprogram := True;
-
- -- Ignore extra switch character
-
- when '/' | '-' =>
- Ptr := Ptr + 1;
-
- -- Anything else is an error (illegal switch character)
-
- when others =>
- raise Bad_Switch;
- end case;
- end loop;
-
- exception
- when Bad_Switch =>
- Osint.Fail ("invalid switch: ", (1 => C));
-
- when Bad_Switch_Value =>
- Osint.Fail ("numeric value too big for switch: ", (1 => C));
-
- when Missing_Switch_Value =>
- Osint.Fail ("missing numeric value for switch: ", (1 => C));
-
- when Too_Many_Output_Files =>
- Osint.Fail ("duplicate -o switch");
- end Scan_Binder_Switches;
-
- -----------------------------
- -- Scan_Front_End_Switches --
- -----------------------------
-
- procedure Scan_Front_End_Switches (Switch_Chars : String) is
- Switch_Starts_With_Gnat : Boolean;
- Ptr : Integer := Switch_Chars'First;
- Max : constant Integer := Switch_Chars'Last;
- C : Character := ' ';
-
- begin
- -- Skip past the initial character (must be the switch character)
-
- if Ptr = Max then
- raise Bad_Switch;
-
- else
- Ptr := Ptr + 1;
- end if;
-
- -- A little check, "gnat" at the start of a switch is not allowed
- -- except for the compiler (where it was already removed)
-
- Switch_Starts_With_Gnat :=
- Ptr + 3 <= Max and then Switch_Chars (Ptr .. Ptr + 3) = "gnat";
-
- if Switch_Starts_With_Gnat then
- Ptr := Ptr + 4;
- end if;
-
- -- Loop to scan through switches given in switch string
-
- while Ptr <= Max loop
- C := Switch_Chars (Ptr);
-
- -- Processing for a switch
-
- case Switch_Starts_With_Gnat is
-
- when False =>
- -- There is only one front-end switch that
- -- does not start with -gnat, namely -I
-
- case C is
-
- when 'I' =>
- Ptr := Ptr + 1;
-
- if Ptr > Max then
- raise Bad_Switch;
- end if;
-
- -- Find out whether this is a -I- or regular -Ixxx switch
-
- if Ptr = Max and then Switch_Chars (Ptr) = '-' then
- Look_In_Primary_Dir := False;
-
- else
- Add_Src_Search_Dir (Switch_Chars (Ptr .. Max));
- end if;
-
- Ptr := Max + 1;
-
- when others =>
- -- Should not happen, as Scan_Switches is supposed
- -- to be called for front-end switches only.
- -- Still, it is safest to raise Bad_Switch error.
-
- raise Bad_Switch;
- end case;
-
- when True =>
- -- Process -gnat* options
-
- case C is
-
- when 'a' =>
- Ptr := Ptr + 1;
- Assertions_Enabled := True;
-
- -- Processing for A switch
-
- when 'A' =>
- Ptr := Ptr + 1;
- Config_File := False;
-
- -- Processing for b switch
-
- when 'b' =>
- Ptr := Ptr + 1;
- Brief_Output := True;
-
- -- Processing for c switch
-
- when 'c' =>
- Ptr := Ptr + 1;
- Operating_Mode := Check_Semantics;
-
- -- Processing for C switch
-
- when 'C' =>
- Ptr := Ptr + 1;
- Compress_Debug_Names := True;
-
- -- 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.
-
- -- 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
- raise Bad_Switch;
- end if;
- end loop;
-
- -- Make sure Zero_Cost_Exceptions is set if gnatdX set. This
- -- is for backwards compatibility with old versions and usage.
-
- if Debug_Flag_XX then
- Zero_Cost_Exceptions_Set := True;
- Zero_Cost_Exceptions_Val := True;
- end if;
-
- return;
-
- -- Processing for D switch
-
- when 'D' =>
- Ptr := Ptr + 1;
-
- -- Note: -gnatD also sets -gnatx (to turn off cross-reference
- -- generation in the ali file) since otherwise this generation
- -- gets confused by the "wrong" Sloc values put in the tree.
-
- Debug_Generated_Code := True;
- Xref_Active := False;
- Set_Debug_Flag ('g');
-
- -- Processing for e switch
-
- when 'e' =>
- Ptr := Ptr + 1;
-
- if Ptr > Max then
- raise Bad_Switch;
- end if;
-
- case Switch_Chars (Ptr) is
-
- -- Configuration pragmas
-
- when 'c' =>
- Ptr := Ptr + 1;
-
- if Ptr > Max then
- raise Bad_Switch;
- end if;
-
- Config_File_Name :=
- new String'(Switch_Chars (Ptr .. Max));
-
- return;
-
- -- Mapping file
-
- when 'm' =>
- Ptr := Ptr + 1;
-
- if Ptr > Max then
- raise Bad_Switch;
- end if;
-
- Mapping_File_Name :=
- new String'(Switch_Chars (Ptr .. Max));
- return;
-
- when others =>
- raise Bad_Switch;
- end case;
-
- -- Processing for E switch
-
- when 'E' =>
- Ptr := Ptr + 1;
- Dynamic_Elaboration_Checks := True;
-
- -- Processing for f switch
-
- when 'f' =>
- Ptr := Ptr + 1;
- All_Errors_Mode := True;
-
- -- Processing for F switch
-
- when 'F' =>
- Ptr := Ptr + 1;
- External_Name_Exp_Casing := Uppercase;
- External_Name_Imp_Casing := Uppercase;
-
- -- Processing for g switch
-
- when 'g' =>
- Ptr := Ptr + 1;
- GNAT_Mode := True;
- Identifier_Character_Set := 'n';
- Warning_Mode := Treat_As_Error;
- Check_Unreferenced := True;
- Check_Withs := True;
-
- Set_Default_Style_Check_Options;
-
- -- Processing for G switch
-
- when 'G' =>
- Ptr := Ptr + 1;
- Print_Generated_Code := True;
-
- -- Processing for h switch
-
- when 'h' =>
- Ptr := Ptr + 1;
- Usage_Requested := True;
-
- -- Processing for H switch
-
- when 'H' =>
- Ptr := Ptr + 1;
- HLO_Active := True;
-
- -- Processing for i switch
-
- when 'i' =>
- if Ptr = Max then
- raise Bad_Switch;
- 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
- raise Bad_Switch;
- end if;
-
- -- Processing for k switch
-
- when 'k' =>
- Ptr := Ptr + 1;
- Scan_Pos (Switch_Chars, Max, Ptr, Maximum_File_Name_Length);
-
- -- Processing for l switch
-
- when 'l' =>
- Ptr := Ptr + 1;
- Full_List := True;
-
- -- Processing for L switch
-
- when 'L' =>
- Ptr := Ptr + 1;
- Zero_Cost_Exceptions_Set := True;
- Zero_Cost_Exceptions_Val := False;
-
- -- Processing for m switch
-
- when 'm' =>
- Ptr := Ptr + 1;
- Scan_Pos (Switch_Chars, Max, Ptr, Maximum_Errors);
-
- -- Processing for n switch
-
- when 'n' =>
- Ptr := Ptr + 1;
- Inline_Active := True;
-
- -- Processing for N switch
-
- when 'N' =>
- Ptr := Ptr + 1;
- Inline_Active := True;
- Front_End_Inlining := True;
-
- -- Processing for o switch
-
- when 'o' =>
- Ptr := Ptr + 1;
- Suppress_Options.Overflow_Checks := False;
-
- -- Processing for O switch
-
- when 'O' =>
- Ptr := Ptr + 1;
- Output_File_Name_Present := True;
-
- -- Processing for p switch
-
- when 'p' =>
- Ptr := Ptr + 1;
- Suppress_Options.Access_Checks := True;
- Suppress_Options.Accessibility_Checks := True;
- Suppress_Options.Discriminant_Checks := True;
- Suppress_Options.Division_Checks := True;
- Suppress_Options.Elaboration_Checks := True;
- Suppress_Options.Index_Checks := True;
- Suppress_Options.Length_Checks := True;
- Suppress_Options.Overflow_Checks := True;
- Suppress_Options.Range_Checks := True;
- Suppress_Options.Division_Checks := True;
- Suppress_Options.Length_Checks := True;
- Suppress_Options.Range_Checks := True;
- Suppress_Options.Storage_Checks := True;
- Suppress_Options.Tag_Checks := True;
-
- Validity_Checks_On := False;
-
- -- Processing for P switch
-
- when 'P' =>
- Ptr := Ptr + 1;
- Polling_Required := True;
-
- -- Processing for q switch
-
- when 'q' =>
- Ptr := Ptr + 1;
- Try_Semantics := True;
-
- -- Processing for q switch
-
- when 'Q' =>
- Ptr := Ptr + 1;
- Force_ALI_Tree_File := True;
- Try_Semantics := True;
-
- -- Processing for r switch
-
- when 'r' =>
- Ptr := Ptr + 1;
-
- -- Temporarily allow -gnatr to mean -gnatyl (use RM layout)
- -- for compatibility with pre 3.12 versions of GNAT,
- -- to be removed for 3.13 ???
-
- Set_Style_Check_Options ("l");
-
- -- Processing for R switch
-
- when 'R' =>
- Ptr := Ptr + 1;
- Back_Annotate_Rep_Info := True;
-
- if Ptr <= Max
- and then Switch_Chars (Ptr) in '0' .. '9'
- then
- C := Switch_Chars (Ptr);
-
- if C in '4' .. '9' then
- raise Bad_Switch;
- else
- List_Representation_Info :=
- Character'Pos (C) - Character'Pos ('0');
- Ptr := Ptr + 1;
- end if;
-
- else
- List_Representation_Info := 1;
- end if;
-
- -- Processing for s switch
-
- when 's' =>
- Ptr := Ptr + 1;
- Operating_Mode := Check_Syntax;
-
- -- Processing for t switch
-
- when 't' =>
- Ptr := Ptr + 1;
- Tree_Output := True;
- Back_Annotate_Rep_Info := True;
-
- -- Processing for T switch
-
- when 'T' =>
- Ptr := Ptr + 1;
- Time_Slice_Set := True;
- Scan_Nat (Switch_Chars, Max, Ptr, Time_Slice_Value);
-
- -- Processing for u switch
-
- when 'u' =>
- Ptr := Ptr + 1;
- List_Units := True;
-
- -- Processing for U switch
-
- when 'U' =>
- Ptr := Ptr + 1;
- Unique_Error_Tag := True;
-
- -- Processing for v switch
-
- when 'v' =>
- Ptr := Ptr + 1;
- Verbose_Mode := True;
-
- -- Processing for V switch
-
- when 'V' =>
- Ptr := Ptr + 1;
-
- if Ptr > Max then
- raise Bad_Switch;
-
- else
- declare
- OK : Boolean;
-
- begin
- Set_Validity_Check_Options
- (Switch_Chars (Ptr .. Max), OK, Ptr);
-
- if not OK then
- raise Bad_Switch;
- end if;
- end;
- end if;
-
- -- Processing for w switch
-
- when 'w' =>
- Ptr := Ptr + 1;
-
- if Ptr > Max then
- raise Bad_Switch;
- end if;
-
- while Ptr <= Max loop
- C := Switch_Chars (Ptr);
-
- case C is
-
- when 'a' =>
- Constant_Condition_Warnings := True;
- Elab_Warnings := True;
- Check_Unreferenced := True;
- Check_Withs := True;
- Implementation_Unit_Warnings := True;
- Ineffective_Inline_Warnings := True;
- Warn_On_Redundant_Constructs := True;
-
- when 'A' =>
- Constant_Condition_Warnings := False;
- Elab_Warnings := False;
- Check_Unreferenced := False;
- Check_Withs := False;
- Implementation_Unit_Warnings := False;
- Warn_On_Biased_Rounding := False;
- Warn_On_Hiding := False;
- Warn_On_Redundant_Constructs := False;
- Ineffective_Inline_Warnings := False;
-
- when 'c' =>
- Constant_Condition_Warnings := True;
-
- when 'C' =>
- Constant_Condition_Warnings := False;
-
- when 'b' =>
- Warn_On_Biased_Rounding := True;
-
- when 'B' =>
- Warn_On_Biased_Rounding := False;
-
- when 'e' =>
- Warning_Mode := Treat_As_Error;
-
- when 'h' =>
- Warn_On_Hiding := True;
-
- when 'H' =>
- Warn_On_Hiding := False;
-
- when 'i' =>
- Implementation_Unit_Warnings := True;
-
- when 'I' =>
- Implementation_Unit_Warnings := False;
-
- when 'l' =>
- Elab_Warnings := True;
-
- when 'L' =>
- Elab_Warnings := False;
-
- when 'o' =>
- Address_Clause_Overlay_Warnings := True;
-
- when 'O' =>
- Address_Clause_Overlay_Warnings := False;
-
- when 'p' =>
- Ineffective_Inline_Warnings := True;
-
- when 'P' =>
- Ineffective_Inline_Warnings := False;
-
- when 'r' =>
- Warn_On_Redundant_Constructs := True;
-
- when 'R' =>
- Warn_On_Redundant_Constructs := False;
-
- when 's' =>
- Warning_Mode := Suppress;
-
- when 'u' =>
- Check_Unreferenced := True;
- Check_Withs := True;
-
- when 'U' =>
- Check_Unreferenced := False;
- Check_Withs := False;
-
- -- Allow and ignore 'w' so that the old
- -- format (e.g. -gnatwuwl) will work.
-
- when 'w' =>
- null;
-
- when others =>
- raise Bad_Switch;
- end case;
-
- Ptr := Ptr + 1;
- end loop;
-
- return;
-
- -- 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
- raise Bad_Switch;
- 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;
- Xref_Active := False;
-
- -- Processing for X switch
-
- when 'X' =>
- Ptr := Ptr + 1;
- Extensions_Allowed := True;
-
- -- Processing for y switch
-
- when 'y' =>
- Ptr := Ptr + 1;
-
- if Ptr > Max then
- Set_Default_Style_Check_Options;
-
- else
- declare
- OK : Boolean;
-
- begin
- Set_Style_Check_Options
- (Switch_Chars (Ptr .. Max), OK, Ptr);
-
- if not OK then
- raise Bad_Switch;
- end if;
- end;
- end if;
-
- -- Processing for z switch
-
- when 'z' =>
- Ptr := Ptr + 1;
-
- -- Allowed for compiler, only if this is the only
- -- -z switch, we do not allow multiple occurrences
-
- if Distribution_Stub_Mode = No_Stubs then
- case Switch_Chars (Ptr) is
- when 'r' =>
- Distribution_Stub_Mode := Generate_Receiver_Stub_Body;
-
- when 'c' =>
- Distribution_Stub_Mode := Generate_Caller_Stub_Body;
-
- when others =>
- raise Bad_Switch;
- end case;
-
- Ptr := Ptr + 1;
-
- end if;
-
- -- Processing for Z switch
-
- when 'Z' =>
- Ptr := Ptr + 1;
- Zero_Cost_Exceptions_Set := True;
- Zero_Cost_Exceptions_Val := True;
-
- -- Processing for 83 switch
-
- when '8' =>
-
- if Ptr = Max then
- raise Bad_Switch;
- end if;
-
- Ptr := Ptr + 1;
-
- if Switch_Chars (Ptr) /= '3' then
- raise Bad_Switch;
- else
- Ptr := Ptr + 1;
- Ada_95 := False;
- Ada_83 := True;
- end if;
-
- -- Ignore extra switch character
-
- when '/' | '-' =>
- Ptr := Ptr + 1;
-
- -- Anything else is an error (illegal switch character)
-
- when others =>
- raise Bad_Switch;
- end case;
- end case;
- end loop;
-
- exception
- when Bad_Switch =>
- Osint.Fail ("invalid switch: ", (1 => C));
-
- when Bad_Switch_Value =>
- Osint.Fail ("numeric value too big for switch: ", (1 => C));
-
- when Missing_Switch_Value =>
- Osint.Fail ("missing numeric value for switch: ", (1 => C));
-
- end Scan_Front_End_Switches;
-
- ------------------------
- -- Scan_Make_Switches --
- ------------------------
-
- procedure Scan_Make_Switches (Switch_Chars : String) is
- Ptr : Integer := Switch_Chars'First;
- Max : Integer := Switch_Chars'Last;
- C : Character := ' ';
-
- begin
- -- Skip past the initial character (must be the switch character)
-
- if Ptr = Max then
- raise Bad_Switch;
-
- else
- Ptr := Ptr + 1;
- end if;
-
- -- A little check, "gnat" at the start of a switch is not allowed
- -- except for the compiler (where it was already removed)
-
- if Switch_Chars'Length >= 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);
-
- -- Processing for a switch
-
- case C is
-
- when 'a' =>
- Ptr := Ptr + 1;
- Check_Readonly_Files := True;
-
- -- Processing for b switch
-
- when 'b' =>
- Ptr := Ptr + 1;
- Bind_Only := True;
-
- -- Processing for c switch
-
- when 'c' =>
- Ptr := Ptr + 1;
- Compile_Only := True;
-
- 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.
-
- -- 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
- raise Bad_Switch;
- end if;
- end loop;
-
- -- Make sure Zero_Cost_Exceptions is set if gnatdX set. This
- -- is for backwards compatibility with old versions and usage.
-
- if Debug_Flag_XX then
- Zero_Cost_Exceptions_Set := True;
- Zero_Cost_Exceptions_Val := True;
- end if;
-
- return;
-
- -- Processing for f switch
-
- when 'f' =>
- Ptr := Ptr + 1;
- Force_Compilations := True;
-
- -- Processing for G switch
-
- when 'G' =>
- Ptr := Ptr + 1;
- Print_Generated_Code := True;
-
- -- Processing for h switch
-
- when 'h' =>
- Ptr := Ptr + 1;
- Usage_Requested := True;
-
- -- Processing for i switch
-
- when 'i' =>
- Ptr := Ptr + 1;
- In_Place_Mode := True;
-
- -- Processing for j switch
-
- when 'j' =>
- Ptr := Ptr + 1;
-
- declare
- Max_Proc : Pos;
- begin
- Scan_Pos (Switch_Chars, Max, Ptr, Max_Proc);
- Maximum_Processes := Positive (Max_Proc);
- end;
-
- -- Processing for k switch
-
- when 'k' =>
- Ptr := Ptr + 1;
- Keep_Going := True;
-
- -- Processing for l switch
-
- when 'l' =>
- Ptr := Ptr + 1;
- Link_Only := True;
-
- when 'M' =>
- Ptr := Ptr + 1;
- List_Dependencies := True;
-
- -- Processing for n switch
-
- when 'n' =>
- Ptr := Ptr + 1;
- Do_Not_Execute := True;
-
- -- Processing for o switch
-
- when 'o' =>
- Ptr := Ptr + 1;
-
- if Output_File_Name_Present then
- raise Too_Many_Output_Files;
- else
- Output_File_Name_Present := True;
- end if;
-
- -- Processing for q switch
-
- when 'q' =>
- Ptr := Ptr + 1;
- Quiet_Output := True;
-
- -- Processing for s switch
-
- when 's' =>
- Ptr := Ptr + 1;
- Check_Switches := True;
-
- -- Processing for v switch
-
- when 'v' =>
- Ptr := Ptr + 1;
- Verbose_Mode := True;
-
- -- Processing for z switch
-
- when 'z' =>
- Ptr := Ptr + 1;
- No_Main_Subprogram := True;
-
- -- Ignore extra switch character
-
- when '/' | '-' =>
- Ptr := Ptr + 1;
-
- -- Anything else is an error (illegal switch character)
-
- when others =>
- raise Bad_Switch;
-
- end case;
- end loop;
-
- exception
- when Bad_Switch =>
- Osint.Fail ("invalid switch: ", (1 => C));
-
- when Bad_Switch_Value =>
- Osint.Fail ("numeric value too big for switch: ", (1 => C));
-
- when Missing_Switch_Value =>
- Osint.Fail ("missing numeric value for switch: ", (1 => C));
-
- when Too_Many_Output_Files =>
- Osint.Fail ("duplicate -o switch");
-
- end Scan_Make_Switches;
-
- --------------
- -- Scan_Nat --
- --------------
-
- procedure Scan_Nat
- (Switch_Chars : String;
- Max : Integer;
- Ptr : in out Integer;
- Result : out Nat) is
- begin
- Result := 0;
- if Ptr > Max or else Switch_Chars (Ptr) not in '0' .. '9' then
- raise Missing_Switch_Value;
- end if;
-
- while Ptr <= Max and then Switch_Chars (Ptr) in '0' .. '9' loop
- Result := Result * 10 +
- Character'Pos (Switch_Chars (Ptr)) - Character'Pos ('0');
- Ptr := Ptr + 1;
-
- if Result > Switch_Max_Value then
- raise Bad_Switch_Value;
- end if;
- end loop;
- end Scan_Nat;
-
- --------------
- -- Scan_Pos --
- --------------
-
- procedure Scan_Pos
- (Switch_Chars : String;
- Max : Integer;
- Ptr : in out Integer;
- Result : out Pos) is
-
- begin
- Scan_Nat (Switch_Chars, Max, Ptr, Result);
- if Result = 0 then
- raise Bad_Switch_Value;
- end if;
- end Scan_Pos;
-
-end Switch;
projects / msp430-gcc.git / blobdiff