+++ /dev/null
-------------------------------------------------------------------------------
--- --
--- GNAT RUNTIME COMPONENTS --
--- --
--- A D A . W I D E _ T E X T _ I O . E N U M E R A T I O N _ A U X --
--- --
--- 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. --
--- --
-------------------------------------------------------------------------------
-
-with Ada.Wide_Text_IO.Generic_Aux; use Ada.Wide_Text_IO.Generic_Aux;
-with Ada.Characters.Handling; use Ada.Characters.Handling;
-with Interfaces.C_Streams; use Interfaces.C_Streams;
-with System.WCh_Con; use System.WCh_Con;
-
-package body Ada.Wide_Text_IO.Enumeration_Aux is
-
- subtype TFT is Ada.Wide_Text_IO.File_Type;
- -- File type required for calls to routines in Aux
-
- -----------------------
- -- Local Subprograms --
- -----------------------
-
- procedure Store_Char
- (File : File_Type;
- WC : Wide_Character;
- Buf : out Wide_String;
- Ptr : in out Integer);
- -- Store a single character in buffer, checking for overflow.
-
- -- These definitions replace the ones in Ada.Characters.Handling, which
- -- do not seem to work for some strange not understood reason ??? at
- -- least in the OS/2 version.
-
- function To_Lower (C : Character) return Character;
- function To_Upper (C : Character) return Character;
-
- ------------------
- -- Get_Enum_Lit --
- ------------------
-
- procedure Get_Enum_Lit
- (File : File_Type;
- Buf : out Wide_String;
- Buflen : out Natural)
- is
- ch : int;
- WC : Wide_Character;
-
- begin
- Buflen := 0;
- Load_Skip (TFT (File));
- ch := Nextc (TFT (File));
-
- -- Character literal case. If the initial character is a quote, then
- -- we read as far as we can without backup (see ACVC test CE3905L)
-
- if ch = Character'Pos (''') then
- Get (File, WC);
- Store_Char (File, WC, Buf, Buflen);
-
- ch := Nextc (TFT (File));
-
- if ch = LM or else ch = EOF then
- return;
- end if;
-
- Get (File, WC);
- Store_Char (File, WC, Buf, Buflen);
-
- ch := Nextc (TFT (File));
-
- if ch /= Character'Pos (''') then
- return;
- end if;
-
- Get (File, WC);
- Store_Char (File, WC, Buf, Buflen);
-
- -- Similarly for identifiers, read as far as we can, in particular,
- -- do read a trailing underscore (again see ACVC test CE3905L to
- -- understand why we do this, although it seems somewhat peculiar).
-
- else
- -- Identifier must start with a letter. Any wide character value
- -- outside the normal Latin-1 range counts as a letter for this.
-
- if ch < 255 and then not Is_Letter (Character'Val (ch)) then
- return;
- end if;
-
- -- If we do have a letter, loop through the characters quitting on
- -- the first non-identifier character (note that this includes the
- -- cases of hitting a line mark or page mark).
-
- loop
- Get (File, WC);
- Store_Char (File, WC, Buf, Buflen);
-
- ch := Nextc (TFT (File));
-
- exit when ch = EOF;
-
- if ch = Character'Pos ('_') then
- exit when Buf (Buflen) = '_';
-
- elsif ch = Character'Pos (ASCII.ESC) then
- null;
-
- elsif File.WC_Method in WC_Upper_Half_Encoding_Method
- and then ch > 127
- then
- null;
-
- else
- exit when Is_Letter (Character'Val (ch))
- and then not Is_Digit (Character'Val (ch));
- end if;
- end loop;
- end if;
- end Get_Enum_Lit;
-
- ---------
- -- Put --
- ---------
-
- procedure Put
- (File : File_Type;
- Item : Wide_String;
- Width : Field;
- Set : Type_Set)
- is
- Actual_Width : constant Integer :=
- Integer'Max (Integer (Width), Item'Length);
-
- begin
- Check_On_One_Line (TFT (File), Actual_Width);
-
- if Set = Lower_Case and then Item (1) /= ''' then
- declare
- Iteml : Wide_String (Item'First .. Item'Last);
-
- begin
- for J in Item'Range loop
- if Is_Character (Item (J)) then
- Iteml (J) :=
- To_Wide_Character (To_Lower (To_Character (Item (J))));
- else
- Iteml (J) := Item (J);
- end if;
- end loop;
-
- Put (File, Iteml);
- end;
-
- else
- Put (File, Item);
- end if;
-
- for J in 1 .. Actual_Width - Item'Length loop
- Put (File, ' ');
- end loop;
- end Put;
-
- ----------
- -- Puts --
- ----------
-
- procedure Puts
- (To : out Wide_String;
- Item : in Wide_String;
- Set : Type_Set)
- is
- Ptr : Natural;
-
- begin
- if Item'Length > To'Length then
- raise Layout_Error;
-
- else
- Ptr := To'First;
- for J in Item'Range loop
- if Set = Lower_Case
- and then Item (1) /= '''
- and then Is_Character (Item (J))
- then
- To (Ptr) :=
- To_Wide_Character (To_Lower (To_Character (Item (J))));
- else
- To (Ptr) := Item (J);
- end if;
-
- Ptr := Ptr + 1;
- end loop;
-
- while Ptr <= To'Last loop
- To (Ptr) := ' ';
- Ptr := Ptr + 1;
- end loop;
- end if;
- end Puts;
-
- -------------------
- -- Scan_Enum_Lit --
- -------------------
-
- procedure Scan_Enum_Lit
- (From : Wide_String;
- Start : out Natural;
- Stop : out Natural)
- is
- WC : Wide_Character;
-
- -- Processing for Scan_Enum_Lit
-
- begin
- Start := From'First;
-
- loop
- if Start > From'Last then
- raise End_Error;
-
- elsif Is_Character (From (Start))
- and then not Is_Blank (To_Character (From (Start)))
- then
- exit;
-
- else
- Start := Start + 1;
- end if;
- end loop;
-
- -- Character literal case. If the initial character is a quote, then
- -- we read as far as we can without backup (see ACVC test CE3905L
- -- which is for the analogous case for reading from a file).
-
- if From (Start) = ''' then
- Stop := Start;
-
- if Stop = From'Last then
- raise Data_Error;
- else
- Stop := Stop + 1;
- end if;
-
- if From (Stop) in ' ' .. '~'
- or else From (Stop) >= Wide_Character'Val (16#80#)
- then
- if Stop = From'Last then
- raise Data_Error;
- else
- Stop := Stop + 1;
-
- if From (Stop) = ''' then
- return;
- end if;
- end if;
- end if;
-
- Stop := Stop - 1;
- raise Data_Error;
-
- -- Similarly for identifiers, read as far as we can, in particular,
- -- do read a trailing underscore (again see ACVC test CE3905L to
- -- understand why we do this, although it seems somewhat peculiar).
-
- else
- -- Identifier must start with a letter, any wide character outside
- -- the normal Latin-1 range is considered a letter for this test.
-
- if Is_Character (From (Start))
- and then not Is_Letter (To_Character (From (Start)))
- then
- raise Data_Error;
- end if;
-
- -- If we do have a letter, loop through the characters quitting on
- -- the first non-identifier character (note that this includes the
- -- cases of hitting a line mark or page mark).
-
- Stop := Start + 1;
- while Stop < From'Last loop
- WC := From (Stop + 1);
-
- exit when
- Is_Character (WC)
- and then
- not Is_Letter (To_Character (WC))
- and then
- not Is_Letter (To_Character (WC))
- and then
- (WC /= '_' or else From (Stop - 1) = '_');
-
- Stop := Stop + 1;
- end loop;
- end if;
-
- end Scan_Enum_Lit;
-
- ----------------
- -- Store_Char --
- ----------------
-
- procedure Store_Char
- (File : File_Type;
- WC : Wide_Character;
- Buf : out Wide_String;
- Ptr : in out Integer)
- is
- begin
- if Ptr = Buf'Last then
- raise Data_Error;
- else
- Ptr := Ptr + 1;
- Buf (Ptr) := WC;
- end if;
- end Store_Char;
-
- --------------
- -- To_Lower --
- --------------
-
- function To_Lower (C : Character) return Character is
- begin
- if C in 'A' .. 'Z' then
- return Character'Val (Character'Pos (C) + 32);
- else
- return C;
- end if;
- end To_Lower;
-
- --------------
- -- To_Upper --
- --------------
-
- function To_Upper (C : Character) return Character is
- begin
- if C in 'a' .. 'z' then
- return Character'Val (Character'Pos (C) - 32);
- else
- return C;
- end if;
- end To_Upper;
-
-end Ada.Wide_Text_IO.Enumeration_Aux;
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