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diff --git a/gcc/ada/a-wtgeau.ads b/gcc/ada/a-wtgeau.ads new file mode 100644 index 00000000000..ed03d521517 --- /dev/null +++ b/gcc/ada/a-wtgeau.ads @@ -0,0 +1,189 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT RUN-TIME COMPONENTS -- +-- -- +-- A D A . W I D E _ T E X T _ I O . G E N E R I C _ A U X -- +-- -- +-- S p e c -- +-- -- +-- $Revision: 1.3 $ -- +-- -- +-- Copyright (C) 1992-1997 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. -- +-- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). -- +-- -- +------------------------------------------------------------------------------ + +-- This package contains a set of auxiliary routines used by Wide_Text_IO +-- generic children, including for reading and writing numeric strings. + +-- Note: although this is the Wide version of the package, the interface +-- here is still in terms of Character and String rather than Wide_Character +-- and Wide_String, since all numeric strings are composed entirely of +-- characters in the range of type Standard.Character, and the basic +-- conversion routines work with Character rather than Wide_Character. + +package Ada.Wide_Text_IO.Generic_Aux is + + -- Note: for all the Load routines, File indicates the file to be read, + -- Buf is the string into which data is stored, Ptr is the index of the + -- last character stored so far, and is updated if additional characters + -- are stored. Data_Error is raised if the input overflows Buf. The only + -- Load routines that do a file status check are Load_Skip and Load_Width + -- so one of these two routines must be called first. + + procedure Check_End_Of_Field + (File : File_Type; + Buf : String; + Stop : Integer; + Ptr : Integer; + Width : Field); + -- This routine is used after doing a get operations on a numeric value. + -- Buf is the string being scanned, and Stop is the last character of + -- the field being scanned. Ptr is as set by the call to the scan routine + -- that scanned out the numeric value, i.e. it points one past the last + -- character scanned, and Width is the width parameter from the Get call. + -- + -- There are two cases, if Width is non-zero, then a check is made that + -- the remainder of the field is all blanks. If Width is zero, then it + -- means that the scan routine scanned out only part of the field. We + -- have already scanned out the field that the ACVC tests seem to expect + -- us to read (even if it does not follow the syntax of the type being + -- scanned, e.g. allowing negative exponents in integers, and underscores + -- at the end of the string), so we just raise Data_Error. + + procedure Check_On_One_Line (File : File_Type; Length : Integer); + -- Check to see if item of length Integer characters can fit on + -- current line. Call New_Line if not, first checking that the + -- line length can accomodate Length characters, raise Layout_Error + -- if item is too large for a single line. + + function Is_Blank (C : Character) return Boolean; + -- Determines if C is a blank (space or tab) + + procedure Load_Width + (File : File_Type; + Width : in Field; + Buf : out String; + Ptr : in out Integer); + -- Loads exactly Width characters, unless a line mark is encountered first + + procedure Load_Skip (File : File_Type); + -- Skips leading blanks and line and page marks, if the end of file is + -- read without finding a non-blank character, then End_Error is raised. + -- Note: a blank is defined as a space or horizontal tab (RM A.10.6(5)). + + procedure Load + (File : File_Type; + Buf : out String; + Ptr : in out Integer; + Char : Character; + Loaded : out Boolean); + -- If next character is Char, loads it, otherwise no characters are loaded + -- Loaded is set to indicate whether or not the character was found. + + procedure Load + (File : File_Type; + Buf : out String; + Ptr : in out Integer; + Char : Character); + -- Same as above, but no indication if character is loaded + + procedure Load + (File : File_Type; + Buf : out String; + Ptr : in out Integer; + Char1 : Character; + Char2 : Character; + Loaded : out Boolean); + -- If next character is Char1 or Char2, loads it, otherwise no characters + -- are loaded. Loaded is set to indicate whether or not one of the two + -- characters was found. + + procedure Load + (File : File_Type; + Buf : out String; + Ptr : in out Integer; + Char1 : Character; + Char2 : Character); + -- Same as above, but no indication if character is loaded + + procedure Load_Digits + (File : File_Type; + Buf : out String; + Ptr : in out Integer; + Loaded : out Boolean); + -- Loads a sequence of zero or more decimal digits. Loaded is set if + -- at least one digit is loaded. + + procedure Load_Digits + (File : File_Type; + Buf : out String; + Ptr : in out Integer); + -- Same as above, but no indication if character is loaded + + procedure Load_Extended_Digits + (File : File_Type; + Buf : out String; + Ptr : in out Integer; + Loaded : out Boolean); + -- Like Load_Digits, but also allows extended digits a-f and A-F + + procedure Load_Extended_Digits + (File : File_Type; + Buf : out String; + Ptr : in out Integer); + -- Same as above, but no indication if character is loaded + + procedure Put_Item (File : File_Type; Str : String); + -- This routine is like Wide_Text_IO.Put, except that it checks for + -- overflow of bounded lines, as described in (RM A.10.6(8)). It is used + -- for all output of numeric values and of enumeration values. Note that + -- the buffer is of type String. Put_Item deals with converting this to + -- Wide_Characters as required. + + procedure Store_Char + (File : File_Type; + ch : Integer; + Buf : out String; + Ptr : in out Integer); + -- Store a single character in buffer, checking for overflow and + -- adjusting the column number in the file to reflect the fact + -- that a character has been acquired from the input stream. + -- The pos value of the character to store is in ch on entry. + + procedure String_Skip (Str : String; Ptr : out Integer); + -- Used in the Get from string procedures to skip leading blanks in the + -- string. Ptr is set to the index of the first non-blank. If the string + -- is all blanks, then the excption End_Error is raised, Note that blank + -- is defined as a space or horizontal tab (RM A.10.6(5)). + + procedure Ungetc (ch : Integer; File : File_Type); + -- Pushes back character into stream, using ungetc. The caller has + -- checked that the file is in read status. Device_Error is raised + -- if the character cannot be pushed back. An attempt to push back + -- an end of file (EOF) is ignored. + +private + pragma Inline (Is_Blank); + +end Ada.Wide_Text_IO.Generic_Aux; |