+++ /dev/null
-------------------------------------------------------------------------------
--- --
--- GNAT RUNTIME COMPONENTS --
--- --
--- A D A . 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.Text_IO.Generic_Aux; use Ada.Text_IO.Generic_Aux;
-with Ada.Characters.Handling; use Ada.Characters.Handling;
-with Interfaces.C_Streams; use Interfaces.C_Streams;
-
--- Note: this package does not yet deal properly with wide characters ???
-
-package body Ada.Text_IO.Enumeration_Aux is
-
- -----------------------
- -- Local Subprograms --
- -----------------------
-
- -- 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 String;
- Buflen : out Natural)
- is
- ch : int;
- C : Character;
-
- begin
- Buflen := 0;
- Load_Skip (File);
- ch := Getc (File);
- C := Character'Val (ch);
-
- -- 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 C = ''' then
- Store_Char (File, ch, Buf, Buflen);
-
- ch := Getc (File);
-
- if ch in 16#20# .. 16#7E# or else ch >= 16#80# then
- Store_Char (File, ch, Buf, Buflen);
-
- ch := Getc (File);
-
- if ch = Character'Pos (''') then
- Store_Char (File, ch, Buf, Buflen);
- else
- Ungetc (ch, File);
- end if;
-
- else
- Ungetc (ch, File);
- end if;
-
- -- 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
-
- if not Is_Letter (C) then
- Ungetc (ch, File);
- 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
- C := Character'Val (ch);
- Store_Char (File, Character'Pos (To_Upper (C)), Buf, Buflen);
-
- ch := Getc (File);
- exit when ch = EOF;
- C := Character'Val (ch);
-
- exit when not Is_Letter (C)
- and then not Is_Digit (C)
- and then C /= '_';
-
- exit when C = '_'
- and then Buf (Buflen) = '_';
- end loop;
-
- Ungetc (ch, File);
- end if;
- end Get_Enum_Lit;
-
- ---------
- -- Put --
- ---------
-
- procedure Put
- (File : File_Type;
- Item : String;
- Width : Field;
- Set : Type_Set)
- is
- Actual_Width : constant Count := Count'Max (Count (Width), Item'Length);
-
- begin
- if Set = Lower_Case and then Item (1) /= ''' then
- declare
- Iteml : String (Item'First .. Item'Last);
-
- begin
- for J in Item'Range loop
- Iteml (J) := To_Lower (Item (J));
- end loop;
-
- Put_Item (File, Iteml);
- end;
-
- else
- Put_Item (File, Item);
- end if;
-
- for J in 1 .. Actual_Width - Item'Length loop
- Put (File, ' ');
- end loop;
- end Put;
-
- ----------
- -- Puts --
- ----------
-
- procedure Puts
- (To : out String;
- Item : in 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) /= ''' then
- To (Ptr) := To_Lower (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 : String;
- Start : out Natural;
- Stop : out Natural)
- is
- C : Character;
-
- -- Processing for Scan_Enum_Lit
-
- begin
- String_Skip (From, Start);
-
- -- 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) >= 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
-
- if not Is_Letter (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;
- while Stop < From'Last loop
- C := From (Stop + 1);
-
- exit when not Is_Letter (C)
- and then not Is_Digit (C)
- and then C /= '_';
-
- exit when C = '_'
- and then From (Stop) = '_';
-
- Stop := Stop + 1;
- end loop;
- end if;
-
- end Scan_Enum_Lit;
-
- --------------
- -- 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;
-
- 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.Text_IO.Enumeration_Aux;
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