+++ /dev/null
-------------------------------------------------------------------------------
--- --
--- GNAT COMPILER COMPONENTS --
--- --
--- O U T P U T --
--- --
--- S p e c --
--- --
--- $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. --
--- --
-------------------------------------------------------------------------------
-
--- This package contains low level output routines used by the compiler
--- for writing error messages and informational output. It is also used
--- by the debug source file output routines (see Sprintf.Print_Eol).
-
-with Types; use Types;
-
-package Output is
-pragma Elaborate_Body (Output);
-
- -------------------------
- -- Line Buffer Control --
- -------------------------
-
- -- Note: the following buffer and column position are maintained by
- -- the subprograms defined in this package, and are not normally
- -- directly modified or accessed by a client. However, a client is
- -- permitted to modify these values, using the knowledge that only
- -- Write_Eol actually generates any output.
-
- Buffer_Max : constant := 8192;
- Buffer : String (1 .. Buffer_Max + 1);
- -- Buffer used to build output line. We do line buffering because it
- -- is needed for the support of the debug-generated-code option (-gnatD).
- -- Historically it was first added because on VMS, line buffering is
- -- needed with certain file formats. So in any case line buffering must
- -- be retained for this purpose, even if other reasons disappear. Note
- -- any attempt to write more output to a line than can fit in the buffer
- -- will be silently ignored.
-
- Column : Pos range 1 .. Buffer'Length + 1 := 1;
- -- Column about to be written.
-
- -----------------
- -- Subprograms --
- -----------------
-
- procedure Set_Standard_Error;
- -- Sets subsequent output to appear on the standard error file (whatever
- -- that might mean for the host operating system, if anything).
-
- procedure Set_Standard_Output;
- -- Sets subsequent output to appear on the standard output file (whatever
- -- that might mean for the host operating system, if anything). This is
- -- the default mode before any call to either of the Set procedures.
-
- procedure Write_Char (C : Character);
- -- Write one character to the standard output file. Note that the
- -- character should not be LF or CR (use Write_Eol for end of line)
-
- procedure Write_Eol;
- -- Write an end of line (whatever is required by the system in use,
- -- e.g. CR/LF for DOS, or LF for Unix) to the standard output file.
- -- This routine also empties the line buffer, actually writing it
- -- to the file. Note that Write_Eol is the only routine that causes
- -- any actual output to be written.
-
- procedure Write_Int (Val : Int);
- -- Write an integer value with no leading blanks or zeroes. Negative
- -- values are preceded by a minus sign).
-
- procedure Write_Str (S : String);
- -- Write a string of characters to the standard output file. Note that
- -- end of line is handled separately using WRITE_EOL, so the string
- -- should not contain either of the characters LF or CR, but it may
- -- contain horizontal tab characters.
-
- procedure Write_Line (S : String);
- -- Equivalent to Write_Str (S) followed by Write_Eol;
-
- --------------------------
- -- Debugging Procedures --
- --------------------------
-
- -- The following procedures are intended only for debugging purposes,
- -- for temporary insertion into the text in environments where a debugger
- -- is not available. They all have non-standard very short lower case
- -- names, precisely to make sure that they are only used for debugging!
-
- procedure w (C : Character);
- -- Dump quote, character quote, followed by line return
-
- procedure w (S : String);
- -- Dump string followed by line return
-
- procedure w (V : Int);
- -- Dump integer followed by line return
-
- procedure w (B : Boolean);
- -- Dump Boolean followed by line return
-
- procedure w (L : String; C : Character);
- -- Dump contents of string followed by blank, quote, character, quote
-
- procedure w (L : String; S : String);
- -- Dump two strings separated by blanks, followed by line return
-
- procedure w (L : String; V : Int);
- -- Dump contents of string followed by blank, integer, line return
-
- procedure w (L : String; B : Boolean);
- -- Dump contents of string followed by blank, Boolean, line return
-
-end Output;
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