/usr/share/ada/adainclude/gnatprj/switch-m.adb is in libgnatprj4.6-dev 4.6.3-1ubuntu3.
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-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- S W I T C H - M --
-- --
-- B o d y --
-- --
-- Copyright (C) 2001-2010, 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 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 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 Debug; use Debug;
with Makeutl; use Makeutl;
with Osint; use Osint;
with Opt; use Opt;
with Prj; use Prj;
with Prj.Env; use Prj.Env;
with Table;
with System.Multiprocessors; use System.Multiprocessors;
package body Switch.M is
package Normalized_Switches is new Table.Table
(Table_Component_Type => String_Access,
Table_Index_Type => Integer,
Table_Low_Bound => 1,
Table_Initial => 20,
Table_Increment => 100,
Table_Name => "Switch.M.Normalized_Switches");
-- This table is used to keep the normalized switches, so that they may be
-- reused for subsequent invocations of Normalize_Compiler_Switches with
-- similar switches.
Initial_Number_Of_Switches : constant := 10;
Global_Switches : Argument_List_Access := null;
-- Used by function Normalize_Compiler_Switches
---------------------------------
-- Normalize_Compiler_Switches --
---------------------------------
procedure Normalize_Compiler_Switches
(Switch_Chars : String;
Switches : in out Argument_List_Access;
Last : out Natural)
is
Switch_Starts_With_Gnat : Boolean;
Ptr : Integer := Switch_Chars'First;
Max : constant Integer := Switch_Chars'Last;
C : Character := ' ';
Storing : String := Switch_Chars;
First_Stored : Positive := Ptr + 1;
Last_Stored : Positive := First_Stored;
procedure Add_Switch_Component (S : String);
-- Add a new String_Access component in Switches. If a string equal
-- to S is already stored in the table Normalized_Switches, use it.
-- Otherwise add a new component to the table.
--------------------------
-- Add_Switch_Component --
--------------------------
procedure Add_Switch_Component (S : String) is
begin
-- If Switches is null, allocate a new array
if Switches = null then
Switches := new Argument_List (1 .. Initial_Number_Of_Switches);
-- Otherwise, if Switches is full, extend it
elsif Last = Switches'Last then
declare
New_Switches : constant Argument_List_Access :=
new Argument_List
(1 .. Switches'Length + Switches'Length);
begin
New_Switches (1 .. Switches'Length) := Switches.all;
Last := Switches'Length;
Switches := New_Switches;
end;
end if;
-- If this is the first switch, Last designates the first component
if Last = 0 then
Last := Switches'First;
else
Last := Last + 1;
end if;
-- Look into the table Normalized_Switches for a similar string.
-- If one is found, put it at the added component, and return.
for Index in 1 .. Normalized_Switches.Last loop
if S = Normalized_Switches.Table (Index).all then
Switches (Last) := Normalized_Switches.Table (Index);
return;
end if;
end loop;
-- No string equal to S was found in the table Normalized_Switches.
-- Add a new component in the table.
Switches (Last) := new String'(S);
Normalized_Switches.Append (Switches (Last));
end Add_Switch_Component;
-- Start of processing for Normalize_Compiler_Switches
begin
Last := 0;
if Ptr = Max or else Switch_Chars (Ptr) /= '-' then
return;
end if;
Ptr := Ptr + 1;
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;
while Ptr <= Max loop
C := Switch_Chars (Ptr);
-- Processing for a switch
case Switch_Starts_With_Gnat is
when False =>
-- All switches that don't start with -gnat stay as is,
-- except -pg, -Wall, -k8, -w
if Switch_Chars = "-pg" or else Switch_Chars = "-p" then
-- The gcc driver converts -pg to -p, so that is what
-- is stored in the ALI file.
Add_Switch_Component ("-p");
elsif Switch_Chars = "-Wall" then
-- The gcc driver adds -gnatwa when -Wall is used
Add_Switch_Component ("-gnatwa");
Add_Switch_Component ("-Wall");
elsif Switch_Chars = "-k8" then
-- The gcc driver transforms -k8 into -gnatk8
Add_Switch_Component ("-gnatk8");
elsif Switch_Chars = "-w" then
-- The gcc driver adds -gnatws when -w is used
Add_Switch_Component ("-gnatws");
Add_Switch_Component ("-w");
elsif Switch_Chars'Length > 6
and then
Switch_Chars (Switch_Chars'First .. Switch_Chars'First + 5)
= "--RTS="
then
Add_Switch_Component (Switch_Chars);
-- When --RTS=mtp is used, the gcc driver adds -mrtp
if Switch_Chars = "--RTS=mtp" then
Add_Switch_Component ("-mrtp");
end if;
-- Take only into account switches that are transmitted to
-- gnat1 by the gcc driver and stored by gnat1 in the ALI file.
else
case C is
when 'O' | 'W' | 'w' | 'f' | 'd' | 'g' | 'm' =>
Add_Switch_Component (Switch_Chars);
when others =>
null;
end case;
end if;
return;
when True =>
case C is
-- One-letter switches
when 'a' | 'A' | 'b' | 'B' | 'c' | 'C' | 'E' | 'f' |
'F' | 'g' | 'h' | 'H' | 'I' | 'L' | 'n' | 'N' |
'o' | 'p' | 'P' | 'q' | 'Q' | 'r' | 's' | 'S' |
't' | 'u' | 'U' | 'v' | 'x' | 'X' | 'Z' =>
Storing (First_Stored) := C;
Add_Switch_Component
(Storing (Storing'First .. First_Stored));
Ptr := Ptr + 1;
-- One-letter switches followed by a positive number
when 'D' | 'G' | 'j' | 'k' | 'm' | 'T' =>
Storing (First_Stored) := C;
Last_Stored := First_Stored;
if Ptr <= Max and then Switch_Chars (Ptr) = '=' then
Ptr := Ptr + 1;
end if;
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;
Add_Switch_Component
(Storing (Storing'First .. Last_Stored));
when 'd' =>
Storing (First_Stored) := 'd';
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
Storing (First_Stored + 1) := C;
Add_Switch_Component
(Storing (Storing'First .. First_Stored + 1));
else
Last := 0;
return;
end if;
end loop;
return;
when 'e' =>
-- Some of the gnate... switches are not stored
Storing (First_Stored) := 'e';
Ptr := Ptr + 1;
if Ptr > Max then
Last := 0;
return;
else
case Switch_Chars (Ptr) is
when 'D' =>
Storing (First_Stored + 1 ..
First_Stored + Max - Ptr + 1) :=
Switch_Chars (Ptr .. Max);
Add_Switch_Component
(Storing (Storing'First ..
First_Stored + Max - Ptr + 1));
Ptr := Max + 1;
when 'G' =>
Ptr := Ptr + 1;
Add_Switch_Component ("-gnateG");
when 'I' =>
Ptr := Ptr + 1;
declare
First : constant Positive := Ptr - 1;
begin
if Ptr <= Max and then
Switch_Chars (Ptr) = '='
then
Ptr := Ptr + 1;
end if;
while Ptr <= Max and then
Switch_Chars (Ptr) in '0' .. '9'
loop
Ptr := Ptr + 1;
end loop;
Storing (First_Stored + 1 ..
First_Stored + Ptr - First) :=
Switch_Chars (First .. Ptr - 1);
Add_Switch_Component
(Storing (Storing'First ..
First_Stored + Ptr - First));
end;
when 'p' =>
Ptr := Ptr + 1;
if Ptr = Max then
Last := 0;
return;
end if;
if Switch_Chars (Ptr) = '=' then
Ptr := Ptr + 1;
end if;
-- To normalize, always put a '=' after
-- -gnatep. Because that could lengthen the
-- switch string, declare a local variable.
declare
To_Store : String (1 .. Max - Ptr + 9);
begin
To_Store (1 .. 8) := "-gnatep=";
To_Store (9 .. Max - Ptr + 9) :=
Switch_Chars (Ptr .. Max);
Add_Switch_Component (To_Store);
end;
return;
when 'S' =>
Ptr := Ptr + 1;
Add_Switch_Component ("-gnateS");
when others =>
Last := 0;
return;
end case;
end if;
when 'i' =>
Storing (First_Stored) := 'i';
Ptr := Ptr + 1;
if Ptr > Max then
Last := 0;
return;
end if;
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
Storing (First_Stored + 1) := C;
Add_Switch_Component
(Storing (Storing'First .. First_Stored + 1));
Ptr := Ptr + 1;
else
Last := 0;
return;
end if;
-- -gnatl may be -gnatl=<file name>
when 'l' =>
Ptr := Ptr + 1;
if Ptr > Max or else Switch_Chars (Ptr) /= '=' then
Add_Switch_Component ("-gnatl");
else
Add_Switch_Component
("-gnatl" & Switch_Chars (Ptr .. Max));
return;
end if;
-- -gnatR may be followed by '0', '1', '2' or '3',
-- then by 's'
when 'R' =>
Last_Stored := First_Stored;
Storing (Last_Stored) := 'R';
Ptr := Ptr + 1;
if Ptr <= Max
and then Switch_Chars (Ptr) in '0' .. '9'
then
C := Switch_Chars (Ptr);
if C in '4' .. '9' then
Last := 0;
return;
else
Last_Stored := Last_Stored + 1;
Storing (Last_Stored) := C;
Ptr := Ptr + 1;
if Ptr <= Max
and then Switch_Chars (Ptr) = 's'
then
Last_Stored := Last_Stored + 1;
Storing (Last_Stored) := 's';
Ptr := Ptr + 1;
end if;
end if;
end if;
Add_Switch_Component
(Storing (Storing'First .. Last_Stored));
-- -gnatWx, x = 'h'. 'u', 's', 'e', '8' or 'b'
when 'W' =>
Storing (First_Stored) := 'W';
Ptr := Ptr + 1;
if Ptr <= Max then
case Switch_Chars (Ptr) is
when 'h' | 'u' | 's' | 'e' | '8' | 'b' =>
Storing (First_Stored + 1) := Switch_Chars (Ptr);
Add_Switch_Component
(Storing (Storing'First .. First_Stored + 1));
Ptr := Ptr + 1;
when others =>
Last := 0;
return;
end case;
end if;
-- Multiple switches
when 'V' | 'w' | 'y' =>
Storing (First_Stored) := C;
Ptr := Ptr + 1;
if Ptr > Max then
if C = 'y' then
Add_Switch_Component
(Storing (Storing'First .. First_Stored));
else
Last := 0;
return;
end if;
end if;
-- Loop through remaining switch characters in string
while Ptr <= Max loop
C := Switch_Chars (Ptr);
Ptr := Ptr + 1;
-- -gnatyMxxx
if C = 'M' and then Storing (First_Stored) = 'y' then
Last_Stored := First_Stored + 1;
Storing (Last_Stored) := 'M';
while Ptr <= Max loop
C := Switch_Chars (Ptr);
exit when C not in '0' .. '9';
Last_Stored := Last_Stored + 1;
Storing (Last_Stored) := C;
Ptr := Ptr + 1;
end loop;
-- If there is no digit after -gnatyM,
-- the switch is invalid.
if Last_Stored = First_Stored + 1 then
Last := 0;
return;
else
Add_Switch_Component
(Storing (Storing'First .. Last_Stored));
end if;
-- --gnatx.x
elsif C = '.' and then Ptr <= Max then
Storing (First_Stored + 1) := '.';
Storing (First_Stored + 2) := Switch_Chars (Ptr);
Ptr := Ptr + 1;
Add_Switch_Component
(Storing (Storing'First .. First_Stored + 2));
-- All other switches are -gnatxx
else
Storing (First_Stored + 1) := C;
Add_Switch_Component
(Storing (Storing'First .. First_Stored + 1));
end if;
end loop;
-- -gnat95 -gnat05
when '0' | '9' =>
Last_Stored := First_Stored;
Storing (Last_Stored) := C;
Ptr := Ptr + 1;
if Ptr /= Max or else Switch_Chars (Ptr) /= '5' then
-- Invalid switch
Last := 0;
return;
else
Last_Stored := Last_Stored + 1;
Storing (Last_Stored) := '5';
Add_Switch_Component
(Storing (Storing'First .. Last_Stored));
Ptr := Ptr + 1;
end if;
-- -gnat83
when '8' =>
Last_Stored := First_Stored;
Storing (Last_Stored) := '8';
Ptr := Ptr + 1;
if Ptr /= Max or else Switch_Chars (Ptr) /= '3' then
-- Invalid switch
Last := 0;
return;
else
Last_Stored := Last_Stored + 1;
Storing (Last_Stored) := '3';
Add_Switch_Component
(Storing (Storing'First .. Last_Stored));
Ptr := Ptr + 1;
end if;
-- Not a valid switch
when others =>
Last := 0;
return;
end case;
end case;
end loop;
end Normalize_Compiler_Switches;
function Normalize_Compiler_Switches
(Switch_Chars : String) return Argument_List
is
Last : Natural;
begin
Normalize_Compiler_Switches (Switch_Chars, Global_Switches, Last);
if Last = 0 then
return (1 .. 0 => null);
else
return Global_Switches (Global_Switches'First .. Last);
end if;
end Normalize_Compiler_Switches;
------------------------
-- Scan_Make_Switches --
------------------------
procedure Scan_Make_Switches
(Project_Node_Tree : Prj.Tree.Project_Node_Tree_Ref;
Switch_Chars : String;
Success : out Boolean)
is
Ptr : Integer := Switch_Chars'First;
Max : constant Integer := Switch_Chars'Last;
C : Character := ' ';
begin
-- Assume a good switch
Success := True;
-- Skip past the initial character (must be the switch character)
if Ptr = Max then
Bad_Switch (Switch_Chars);
else
Ptr := Ptr + 1;
end if;
-- A little check, "gnat" at the start of a switch is for the compiler
if Switch_Chars'Length >= Ptr + 3
and then Switch_Chars (Ptr .. Ptr + 3) = "gnat"
then
Success := False;
return;
end if;
C := Switch_Chars (Ptr);
-- Multiple character switches
if Switch_Chars'Length > 2 then
if Switch_Chars = "--create-missing-dirs" then
Setup_Projects := True;
elsif Switch_Chars'Length > Subdirs_Option'Length
and then
Switch_Chars
(Switch_Chars'First ..
Switch_Chars'First + Subdirs_Option'Length - 1) =
Subdirs_Option
then
Subdirs :=
new String'
(Switch_Chars
(Switch_Chars'First + Subdirs_Option'Length ..
Switch_Chars'Last));
elsif Switch_Chars = Makeutl.Unchecked_Shared_Lib_Imports then
Opt.Unchecked_Shared_Lib_Imports := True;
elsif Switch_Chars = Makeutl.Single_Compile_Per_Obj_Dir_Switch then
Opt.One_Compilation_Per_Obj_Dir := True;
elsif Switch_Chars (Ptr) = '-' then
Bad_Switch (Switch_Chars);
elsif Switch_Chars'Length > 3
and then Switch_Chars (Ptr .. Ptr + 1) = "aP"
then
Add_Directories
(Project_Node_Tree.Project_Path,
Switch_Chars (Ptr + 2 .. Switch_Chars'Last));
elsif C = 'v' and then Switch_Chars'Length = 3 then
Ptr := Ptr + 1;
Verbose_Mode := True;
case Switch_Chars (Ptr) is
when 'l' =>
Verbosity_Level := Opt.Low;
when 'm' =>
Verbosity_Level := Opt.Medium;
when 'h' =>
Verbosity_Level := Opt.High;
when others =>
Success := False;
end case;
elsif C = 'd' then
-- 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);
if C in 'a' .. 'z' or else C in 'A' .. 'Z' then
Set_Debug_Flag (C);
else
Bad_Switch (Switch_Chars);
end if;
end loop;
elsif C = 'e' then
Ptr := Ptr + 1;
case Switch_Chars (Ptr) is
-- Processing for eI switch
when 'I' =>
Ptr := Ptr + 1;
Scan_Pos (Switch_Chars, Max, Ptr, Main_Index, C);
if Ptr <= Max then
Bad_Switch (Switch_Chars);
end if;
-- Processing for eL switch
when 'L' =>
if Ptr /= Max then
Bad_Switch (Switch_Chars);
else
Follow_Links_For_Files := True;
Follow_Links_For_Dirs := True;
end if;
-- Processing for eS switch
when 'S' =>
if Ptr /= Max then
Bad_Switch (Switch_Chars);
else
Commands_To_Stdout := True;
end if;
when others =>
Bad_Switch (Switch_Chars);
end case;
elsif C = 'j' then
Ptr := Ptr + 1;
declare
Max_Proc : Nat;
begin
Scan_Nat (Switch_Chars, Max, Ptr, Max_Proc, C);
if Ptr <= Max then
Bad_Switch (Switch_Chars);
else
if Max_Proc = 0 then
Max_Proc := Nat (Number_Of_CPUs);
if Max_Proc = 0 then
Max_Proc := 1;
end if;
end if;
Maximum_Processes := Positive (Max_Proc);
end if;
end;
elsif C = 'w' and then Switch_Chars'Length = 3 then
Ptr := Ptr + 1;
if Switch_Chars = "-we" then
Warning_Mode := Treat_As_Error;
elsif Switch_Chars = "-wn" then
Warning_Mode := Normal;
elsif Switch_Chars = "-ws" then
Warning_Mode := Suppress;
else
Success := False;
end if;
else
Success := False;
end if;
-- Single-character switches
else
Check_Switch : begin
case C is
when 'a' =>
Check_Readonly_Files := True;
-- Processing for b switch
when 'b' =>
Bind_Only := True;
Make_Steps := True;
-- Processing for B switch
when 'B' =>
Build_Bind_And_Link_Full_Project := True;
-- Processing for c switch
when 'c' =>
Compile_Only := True;
Make_Steps := True;
-- Processing for C switch
when 'C' =>
Opt.Create_Mapping_File := True;
-- Processing for D switch
when 'D' =>
if Object_Directory_Present then
Osint.Fail ("duplicate -D switch");
else
Object_Directory_Present := True;
end if;
-- Processing for f switch
when 'f' =>
Force_Compilations := True;
-- Processing for F switch
when 'F' =>
Full_Path_Name_For_Brief_Errors := True;
-- Processing for h switch
when 'h' =>
Usage_Requested := True;
-- Processing for i switch
when 'i' =>
In_Place_Mode := True;
-- Processing for j switch
when 'j' =>
-- -j not followed by a number is an error
Bad_Switch (Switch_Chars);
-- Processing for k switch
when 'k' =>
Keep_Going := True;
-- Processing for l switch
when 'l' =>
Link_Only := True;
Make_Steps := True;
-- Processing for M switch
when 'M' =>
List_Dependencies := True;
-- Processing for n switch
when 'n' =>
Do_Not_Execute := True;
-- Processing for o switch
when 'o' =>
if Output_File_Name_Present then
Osint.Fail ("duplicate -o switch");
else
Output_File_Name_Present := True;
end if;
-- Processing for p switch
when 'p' =>
Setup_Projects := True;
-- Processing for q switch
when 'q' =>
Quiet_Output := True;
-- Processing for R switch
when 'R' =>
Run_Path_Option := False;
-- Processing for s switch
when 's' =>
Ptr := Ptr + 1;
Check_Switches := True;
-- Processing for v switch
when 'v' =>
Verbose_Mode := True;
Verbosity_Level := Opt.High;
-- Processing for x switch
when 'x' =>
External_Unit_Compilation_Allowed := True;
Use_Include_Path_File := True;
-- Processing for z switch
when 'z' =>
No_Main_Subprogram := True;
-- Any other small letter is an illegal switch
when others =>
if C in 'a' .. 'z' then
Bad_Switch (Switch_Chars);
else
Success := False;
end if;
end case;
end Check_Switch;
end if;
end Scan_Make_Switches;
end Switch.M;
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