------------------------------------------------------------------------------ -- -- -- GNAT COMPILER COMPONENTS -- -- -- -- S W I T C H - C -- -- -- -- B o d y -- -- -- -- -- -- Copyright (C) 2001-2002 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. -- -- -- ------------------------------------------------------------------------------ with Debug; use Debug; with Lib; use Lib; with Osint; use Osint; with Opt; use Opt; with Types; use Types; with Validsw; use Validsw; with Stylesw; use Stylesw; with System.WCh_Con; use System.WCh_Con; package body Switch.C is ----------------------------- -- Scan_Front_End_Switches -- ----------------------------- procedure Scan_Front_End_Switches (Switch_Chars : String) is Switch_Starts_With_Gnat : Boolean; -- True if first four switch characters are "gnat" First_Switch : Boolean := True; -- False for all but first switch Ptr : Integer := Switch_Chars'First; Max : constant Integer := Switch_Chars'Last; C : Character := ' '; Store_Switch : Boolean := True; First_Char : Integer := Ptr; Storing : String := Switch_Chars; First_Stored : Positive := Ptr + 1; -- The above need comments ??? begin -- Skip past the initial character (must be the switch character) if Ptr = Max then raise Bad_Switch; else Ptr := Ptr + 1; end if; -- Remove "gnat" from the switch, if present Switch_Starts_With_Gnat := Ptr + 3 <= Max and then Switch_Chars (Ptr .. Ptr + 3) = "gnat"; if Switch_Starts_With_Gnat then Ptr := Ptr + 4; First_Stored := Ptr; end if; -- Loop to scan through switches given in switch string while Ptr <= Max loop Store_Switch := True; First_Char := Ptr; C := Switch_Chars (Ptr); -- Processing for a switch case Switch_Starts_With_Gnat is when False => -- There are only two front-end switches that -- do not start with -gnat, namely -I and --RTS if Switch_Chars (Ptr) = 'I' then Store_Switch := False; 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; -- Processing of the --RTS switch. --RTS has been modified by -- gcc and is now of the form -fRTS elsif Ptr + 3 <= Max and then Switch_Chars (Ptr .. Ptr + 3) = "fRTS" then Ptr := Ptr + 1; if Ptr + 4 > Max or else Switch_Chars (Ptr + 3) /= '=' then Osint.Fail ("missing path for --RTS"); else -- valid --RTS switch Opt.No_Stdinc := True; Opt.RTS_Switch := True; declare Src_Path_Name : String_Ptr := Get_RTS_Search_Dir (Switch_Chars (Ptr + 4 .. Max), Include); Lib_Path_Name : String_Ptr := Get_RTS_Search_Dir (Switch_Chars (Ptr + 4 .. Max), Objects); begin if Src_Path_Name /= null and then Lib_Path_Name /= null then Add_Search_Dirs (Src_Path_Name, Include); Add_Search_Dirs (Lib_Path_Name, Objects); Ptr := Max + 1; elsif Src_Path_Name = null and 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 raise Bad_Switch; end if; 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' => if not First_Switch then Osint.Fail ("-gnatc myust be first if combined with other switches"); end if; 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' => Store_Switch := False; Storing (First_Stored) := '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); Storing (First_Stored + 1) := C; Store_Compilation_Switch (Storing (Storing'First .. First_Stored + 1)); 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' => Store_Switch := False; 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' => Store_Switch := False; 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 = '9' 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; Opt.Enable_Overflow_Checks := True; -- 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.Storage_Checks := True; Suppress_Options.Tag_Checks := True; Validity_Checks_On := False; Opt.Suppress_Checks := True; Opt.Enable_Overflow_Checks := 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; 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; if Ptr <= Max and then Switch_Chars (Ptr) = 's' then Ptr := Ptr + 1; if List_Representation_Info /= 0 then List_Representation_Info_To_File := True; end if; end if; else List_Representation_Info := 1; end if; -- Processing for s switch when 's' => if not First_Switch then Osint.Fail ("-gnats myust be first if combined with other switches"); end if; 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; Scan_Pos (Switch_Chars, Max, Ptr, Table_Factor); -- 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' => Store_Switch := False; Storing (First_Stored) := '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; for Index in First_Char + 1 .. Max loop Storing (First_Stored + 1) := Switch_Chars (Index); Store_Compilation_Switch (Storing (Storing'First .. First_Stored + 1)); end loop; end; end if; Ptr := Max + 1; -- Processing for w switch when 'w' => Store_Switch := False; Storing (First_Stored) := '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; Check_Unreferenced_Formals := 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; Check_Unreferenced_Formals := False; Implementation_Unit_Warnings := False; Warn_On_Biased_Rounding := False; Warn_On_Dereference := False; Warn_On_Hiding := False; Warn_On_Redundant_Constructs := False; Ineffective_Inline_Warnings := False; when 'b' => Warn_On_Biased_Rounding := True; when 'B' => Warn_On_Biased_Rounding := False; when 'c' => Constant_Condition_Warnings := True; when 'C' => Constant_Condition_Warnings := False; when 'd' => Warn_On_Dereference := True; when 'D' => Warn_On_Dereference := False; when 'e' => Warning_Mode := Treat_As_Error; when 'f' => Check_Unreferenced_Formals := True; when 'F' => Check_Unreferenced_Formals := False; 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; Check_Unreferenced_Formals := True; when 'U' => Check_Unreferenced := False; Check_Withs := False; Check_Unreferenced_Formals := 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; if C /= 'w' then Storing (First_Stored + 1) := C; Store_Compilation_Switch (Storing (Storing'First .. First_Stored + 1)); end if; Ptr := Ptr + 1; end loop; return; -- Processing for W switch when 'W' => Ptr := Ptr + 1; if Ptr > Max then raise Bad_Switch; end if; 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 Store_Switch := False; Storing (First_Stored) := 'y'; declare OK : Boolean; Last_Stored : Integer; begin Set_Style_Check_Options (Switch_Chars (Ptr .. Max), OK, Ptr); if not OK then raise Bad_Switch; end if; Ptr := First_Char + 1; while Ptr <= Max loop Last_Stored := First_Stored + 1; Storing (Last_Stored) := Switch_Chars (Ptr); if Switch_Chars (Ptr) = 'M' then loop Ptr := Ptr + 1; exit when Ptr > Max or else Switch_Chars (Ptr) not in '0' .. '9'; Last_Stored := Last_Stored + 1; Storing (Last_Stored) := Switch_Chars (Ptr); end loop; else Ptr := Ptr + 1; end if; Store_Compilation_Switch (Storing (Storing'First .. Last_Stored)); end loop; 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; if Store_Switch then Storing (First_Stored .. First_Stored + Ptr - First_Char - 1) := Switch_Chars (First_Char .. Ptr - 1); Store_Compilation_Switch (Storing (Storing'First .. First_Stored + Ptr - First_Char - 1)); end if; First_Switch := False; 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; end Switch.C;