From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- gcc/ada/switch.ads | 131 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 131 insertions(+) create mode 100644 gcc/ada/switch.ads (limited to 'gcc/ada/switch.ads') diff --git a/gcc/ada/switch.ads b/gcc/ada/switch.ads new file mode 100644 index 000000000..f7c62cba2 --- /dev/null +++ b/gcc/ada/switch.ads @@ -0,0 +1,131 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT COMPILER COMPONENTS -- +-- -- +-- S W I T C H -- +-- -- +-- S p e c -- +-- -- +-- Copyright (C) 1992-2009, 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. -- +-- -- +------------------------------------------------------------------------------ + +-- This package together with a child package appropriate to the client tool +-- scans switches. Note that the body of the appropriate Usage package must be +-- coordinated with the switches that are recognized by this package. These +-- Usage packages also act as the official documentation for the switches +-- that are recognized. In addition, package Debug documents the otherwise +-- undocumented debug switches that are also recognized. + +with Gnatvsn; +with Types; use Types; + +------------ +-- Switch -- +------------ + +package Switch is + + -- Common switches for GNU tools + + Version_Switch : constant String := "--version"; + Help_Switch : constant String := "--help"; + + ----------------- + -- Subprograms -- + ----------------- + + generic + with procedure Usage; + -- Print tool-specific part of --help message + procedure Check_Version_And_Help_G + (Tool_Name : String; + Initial_Year : String; + Version_String : String := Gnatvsn.Gnat_Version_String); + -- Check if switches --version or --help is used. If one of this switch is + -- used, issue the proper messages and end the process. + + procedure Display_Version + (Tool_Name : String; + Initial_Year : String; + Version_String : String := Gnatvsn.Gnat_Version_String); + -- Display version of a tool when switch --version is used + + function Is_Switch (Switch_Chars : String) return Boolean; + -- Returns True iff Switch_Chars is at least two characters long, and the + -- first character is an hyphen ('-'). + + function Is_Front_End_Switch (Switch_Chars : String) return Boolean; + -- Returns True iff Switch_Chars represents a front-end switch, i.e. it + -- starts with -I, -gnat or -?RTS. + + function Is_Internal_GCC_Switch (Switch_Chars : String) return Boolean; + -- Returns True iff Switch_Chars represents an internal GCC switch to be + -- followed by a single argument, such as -dumpbase, --param or -auxbase. + -- Even though passed by the "gcc" driver, these need not be stored in ALI + -- files and may safely be ignored by non GCC back-ends. + + function Switch_Last (Switch_Chars : String) return Natural; + -- Index in Switch_Chars of the last relevant character for later string + -- comparison purposes. This is typically 'Last, minus one if there is a + -- terminating ASCII.NUL. + +private + -- This section contains some common routines used by the tool dependent + -- child packages (there is one such child package for each tool that uses + -- Switches to scan switches - Compiler/gnatbind/gnatmake/. + + Switch_Max_Value : constant := 999_999; + -- Maximum value permitted in switches that take a value + + function Nat_Present + (Switch_Chars : String; + Max : Integer; + Ptr : Integer) return Boolean; + -- Returns True if an integer is at the current scan location or an equal + -- sign. This is used as a guard for calling Scan_Nat. Switch_Chars is the + -- string containing the switch, and Ptr points just past the switch + -- character. Max is the maximum allowed value of Ptr. + + procedure Scan_Nat + (Switch_Chars : String; + Max : Integer; + Ptr : in out Integer; + Result : out Nat; + Switch : Character); + -- 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. Max is the maximum allowed value of Ptr, so the scan is + -- restricted to Switch_Chars (Ptr .. Max). It is possible for Ptr to be + -- one greater than Max on return if the entire string is digits. Scan_Nat + -- will skip an optional equal sign if it is present. Nat_Present must be + -- True, or an error will be signalled. + + procedure Scan_Pos + (Switch_Chars : String; + Max : Integer; + Ptr : in out Integer; + Result : out Pos; + Switch : Character); + -- 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. + + procedure Bad_Switch (Switch : Character); + procedure Bad_Switch (Switch : String); + -- Fail with an appropriate message when a switch is not recognized + +end Switch; -- cgit v1.2.3