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Diffstat (limited to 'gcc/ada/prj-ext.adb')
| -rw-r--r-- | gcc/ada/prj-ext.adb | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/gcc/ada/prj-ext.adb b/gcc/ada/prj-ext.adb new file mode 100644 index 00000000000..b6f6ab8bb14 --- /dev/null +++ b/gcc/ada/prj-ext.adb @@ -0,0 +1,130 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT COMPILER COMPONENTS -- +-- -- +-- P R J . E X T -- +-- -- +-- B o d y -- +-- -- +-- $Revision: 1.5 $ +-- -- +-- Copyright (C) 2000 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. -- +-- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). -- +-- -- +------------------------------------------------------------------------------ + +with GNAT.HTable; +with GNAT.OS_Lib; use GNAT.OS_Lib; +with Namet; use Namet; +with Prj.Com; use Prj.Com; +with Stringt; use Stringt; +with Types; use Types; + +package body Prj.Ext is + + package Htable is new GNAT.HTable.Simple_HTable + (Header_Num => Header_Num, + Element => String_Id, + No_Element => No_String, + Key => Name_Id, + Hash => Hash, + Equal => "="); + + --------- + -- Add -- + --------- + + procedure Add + (External_Name : String; + Value : String) + is + The_Key : Name_Id; + The_Value : String_Id; + + begin + Start_String; + Store_String_Chars (Value); + The_Value := End_String; + Name_Len := External_Name'Length; + Name_Buffer (1 .. Name_Len) := External_Name; + The_Key := Name_Find; + Htable.Set (The_Key, The_Value); + end Add; + + ----------- + -- Check -- + ----------- + + function Check (Declaration : String) return Boolean is + begin + for Equal_Pos in Declaration'Range loop + + if Declaration (Equal_Pos) = '=' then + exit when Equal_Pos = Declaration'First; + exit when Equal_Pos = Declaration'Last; + Add + (External_Name => + Declaration (Declaration'First .. Equal_Pos - 1), + Value => + Declaration (Equal_Pos + 1 .. Declaration'Last)); + return True; + end if; + + end loop; + + return False; + end Check; + + -------------- + -- Value_Of -- + -------------- + + function Value_Of + (External_Name : Name_Id; + With_Default : String_Id := No_String) + return String_Id + is + The_Value : String_Id; + + begin + The_Value := Htable.Get (External_Name); + + if The_Value /= No_String then + return The_Value; + end if; + + -- Find if it is an environment. + -- If it is, put the value in the hash table. + + declare + Env_Value : constant String_Access := + Getenv (Get_Name_String (External_Name)); + + begin + if Env_Value /= null and then Env_Value'Length > 0 then + Start_String; + Store_String_Chars (Env_Value.all); + The_Value := End_String; + Htable.Set (External_Name, The_Value); + return The_Value; + + else + return With_Default; + end if; + end; + end Value_Of; + +end Prj.Ext; |