+++ /dev/null
-------------------------------------------------------------------------------
--- --
--- GNAT COMPILER COMPONENTS --
--- --
--- W I D E C H A R --
--- --
--- B o d y --
--- --
--- $Revision: 1.1.16.1 $
--- --
--- Copyright (C) 1992-2001 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. --
--- --
--- As a special exception, if other files instantiate generics from this --
--- unit, or you link this unit with other files to produce an executable, --
--- this unit does not by itself cause the resulting executable to be --
--- covered by the GNU General Public License. This exception does not --
--- however invalidate any other reasons why the executable file might be --
--- covered by the GNU Public License. --
--- --
--- GNAT was originally developed by the GNAT team at New York University. --
--- Extensive contributions were provided by Ada Core Technologies Inc. --
--- --
-------------------------------------------------------------------------------
-
--- Note: this package uses the generic subprograms in System.Wch_Cnv, which
--- completely encapsulate the set of wide character encoding methods, so no
--- modifications are required when adding new encoding methods.
-
-with Opt; use Opt;
-
-with System.WCh_Cnv; use System.WCh_Cnv;
-with System.WCh_Con; use System.WCh_Con;
-
-package body Widechar is
-
- ---------------------------
- -- Is_Start_Of_Wide_Char --
- ---------------------------
-
- function Is_Start_Of_Wide_Char
- (S : Source_Buffer_Ptr;
- P : Source_Ptr)
- return Boolean
- is
- begin
- case Wide_Character_Encoding_Method is
- when WCEM_Hex =>
- return S (P) = ASCII.ESC;
-
- when WCEM_Upper |
- WCEM_Shift_JIS |
- WCEM_EUC |
- WCEM_UTF8 =>
- return S (P) >= Character'Val (16#80#);
-
- when WCEM_Brackets =>
- return P <= S'Last - 2
- and then S (P) = '['
- and then S (P + 1) = '"'
- and then S (P + 2) /= '"';
- end case;
- end Is_Start_Of_Wide_Char;
-
- -----------------
- -- Length_Wide --
- -----------------
-
- function Length_Wide return Nat is
- begin
- return WC_Longest_Sequence;
- end Length_Wide;
-
- ---------------
- -- Scan_Wide --
- ---------------
-
- procedure Scan_Wide
- (S : Source_Buffer_Ptr;
- P : in out Source_Ptr;
- C : out Char_Code;
- Err : out Boolean)
- is
- function In_Char return Character;
- -- Function to obtain characters of wide character escape sequence
-
- function In_Char return Character is
- begin
- P := P + 1;
- return S (P - 1);
- end In_Char;
-
- function WC_In is new Char_Sequence_To_Wide_Char (In_Char);
-
- begin
- C := Char_Code (Wide_Character'Pos
- (WC_In (In_Char, Wide_Character_Encoding_Method)));
- Err := False;
-
- exception
- when Constraint_Error =>
- C := Char_Code (0);
- P := P - 1;
- Err := True;
- end Scan_Wide;
-
- --------------
- -- Set_Wide --
- --------------
-
- procedure Set_Wide
- (C : Char_Code;
- S : in out String;
- P : in out Natural)
- is
- procedure Out_Char (C : Character);
- -- Procedure to store one character of wide character sequence
-
- procedure Out_Char (C : Character) is
- begin
- P := P + 1;
- S (P) := C;
- end Out_Char;
-
- procedure WC_Out is new Wide_Char_To_Char_Sequence (Out_Char);
-
- begin
- WC_Out (Wide_Character'Val (C), Wide_Character_Encoding_Method);
- end Set_Wide;
-
- ---------------
- -- Skip_Wide --
- ---------------
-
- procedure Skip_Wide (S : String; P : in out Natural) is
- function Skip_Char return Character;
- -- Function to skip one character of wide character escape sequence
-
- function Skip_Char return Character is
- begin
- P := P + 1;
- return S (P - 1);
- end Skip_Char;
-
- function WC_Skip is new Char_Sequence_To_Wide_Char (Skip_Char);
-
- Discard : Wide_Character;
-
- begin
- Discard := WC_Skip (Skip_Char, Wide_Character_Encoding_Method);
- end Skip_Wide;
-
-end Widechar;
projects / msp430-gcc.git / blobdiff