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Diffstat (limited to 'gcc/ada/libgnat/s-cautns.adb')
| -rw-r--r-- | gcc/ada/libgnat/s-cautns.adb | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/gcc/ada/libgnat/s-cautns.adb b/gcc/ada/libgnat/s-cautns.adb new file mode 100644 index 0000000..3e2d996 --- /dev/null +++ b/gcc/ada/libgnat/s-cautns.adb @@ -0,0 +1,127 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT RUN-TIME COMPONENTS -- +-- -- +-- S Y S T E M . C A S E _ U T I L _ N S S -- +-- -- +-- B o d y -- +-- -- +-- Copyright (C) 1995-2025, AdaCore -- +-- -- +-- 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. -- +-- -- +-- As a special exception under Section 7 of GPL version 3, you are granted -- +-- additional permissions described in the GCC Runtime Library Exception, -- +-- version 3.1, as published by the Free Software Foundation. -- +-- -- +-- You should have received a copy of the GNU General Public License and -- +-- a copy of the GCC Runtime Library Exception along with this program; -- +-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- +-- <http://www.gnu.org/licenses/>. -- +-- -- +-- GNAT was originally developed by the GNAT team at New York University. -- +-- Extensive contributions were provided by Ada Core Technologies Inc. -- +-- -- +------------------------------------------------------------------------------ + +-- Ghost code, loop invariants and assertions in this unit are meant for +-- analysis only, not for run-time checking, as it would be too costly +-- otherwise. This is enforced by setting the assertion policy to Ignore. + +pragma Assertion_Policy (Ghost => Ignore, + Loop_Invariant => Ignore, + Assert => Ignore); + +package body System.Case_Util_NSS + with SPARK_Mode +is + -------------- + -- To_Lower -- + -------------- + + function To_Lower (A : Character) return Character is + A_Val : constant Natural := Character'Pos (A); + + begin + if A in 'A' .. 'Z' + or else A_Val in 16#C0# .. 16#D6# + or else A_Val in 16#D8# .. 16#DE# + then + return Character'Val (A_Val + 16#20#); + else + return A; + end if; + end To_Lower; + + procedure To_Lower (A : in out String) is + begin + for J in A'Range loop + A (J) := To_Lower (A (J)); + + pragma Loop_Invariant + (for all K in A'First .. J => A (K) = To_Lower (A'Loop_Entry (K))); + end loop; + end To_Lower; + + -------------- + -- To_Mixed -- + -------------- + + procedure To_Mixed (A : in out String) is + Ucase : Boolean := True; + + begin + for J in A'Range loop + if Ucase then + A (J) := To_Upper (A (J)); + else + A (J) := To_Lower (A (J)); + end if; + + pragma Loop_Invariant + (for all K in A'First .. J => + (if K = A'First + or else A'Loop_Entry (K - 1) = '_' + then + A (K) = To_Upper (A'Loop_Entry (K)) + else + A (K) = To_Lower (A'Loop_Entry (K)))); + + Ucase := A (J) = '_'; + end loop; + end To_Mixed; + + -------------- + -- To_Upper -- + -------------- + + function To_Upper (A : Character) return Character is + A_Val : constant Natural := Character'Pos (A); + + begin + if A in 'a' .. 'z' + or else A_Val in 16#E0# .. 16#F6# + or else A_Val in 16#F8# .. 16#FE# + then + return Character'Val (A_Val - 16#20#); + else + return A; + end if; + end To_Upper; + + procedure To_Upper (A : in out String) is + begin + for J in A'Range loop + A (J) := To_Upper (A (J)); + + pragma Loop_Invariant + (for all K in A'First .. J => A (K) = To_Upper (A'Loop_Entry (K))); + end loop; + end To_Upper; + +end System.Case_Util_NSS; |