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+;;; byte-run.el --- byte-compiler support for inlining
+
+;; Copyright (C) 1992 Free Software Foundation, Inc.
+
+;; Author: Jamie Zawinski <jwz@lucid.com>
+;;	Hallvard Furuseth <hbf@ulrik.uio.no>
+;; Maintainer: FSF
+;; Keywords: internal
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation; either version 2, or (at your option)
+;; any later version.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT 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
+;; along with GNU Emacs; see the file COPYING.  If not, write to the
+;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+;; Boston, MA 02111-1307, USA.
+
+;;; Commentary:
+
+;; interface to selectively inlining functions.
+;; This only happens when source-code optimization is turned on.
+
+;;; Code:
+
+;; Redefined in byte-optimize.el.
+;; This is not documented--it's not clear that we should promote it.
+(fset 'inline 'progn)
+(put 'inline 'lisp-indent-hook 0)
+
+
+;;; Interface to inline functions.
+
+;; (defmacro proclaim-inline (&rest fns)
+;;   "Cause the named functions to be open-coded when called from compiled code.
+;; They will only be compiled open-coded when byte-compile-optimize is true."
+;;   (cons 'eval-and-compile
+;; 	(mapcar '(lambda (x)
+;; 		   (or (memq (get x 'byte-optimizer)
+;; 			     '(nil byte-compile-inline-expand))
+;; 		       (error
+;; 			"%s already has a byte-optimizer, can't make it inline"
+;; 			x))
+;; 		   (list 'put (list 'quote x)
+;; 			 ''byte-optimizer ''byte-compile-inline-expand))
+;; 		fns)))
+
+;; (defmacro proclaim-notinline (&rest fns)
+;;   "Cause the named functions to no longer be open-coded."
+;;   (cons 'eval-and-compile
+;; 	(mapcar '(lambda (x)
+;; 		   (if (eq (get x 'byte-optimizer) 'byte-compile-inline-expand)
+;; 		       (put x 'byte-optimizer nil))
+;; 		   (list 'if (list 'eq (list 'get (list 'quote x) ''byte-optimizer)
+;; 				   ''byte-compile-inline-expand)
+;; 			 (list 'put x ''byte-optimizer nil)))
+;; 		fns)))
+
+;; This has a special byte-hunk-handler in bytecomp.el.
+(defmacro defsubst (name arglist &rest body)
+  "Define an inline function.  The syntax is just like that of `defun'."
+  (or (memq (get name 'byte-optimizer)
+	    '(nil byte-compile-inline-expand))
+      (error "`%s' is a primitive" name))
+  (list 'prog1
+	(cons 'defun (cons name (cons arglist body)))
+	(list 'eval-and-compile
+	      (list 'put (list 'quote name)
+		    ''byte-optimizer ''byte-compile-inline-expand))))
+
+(defun make-obsolete (fn new &optional when)
+  "Make the byte-compiler warn that FUNCTION is obsolete.
+The warning will say that NEW should be used instead.
+If NEW is a string, that is the `use instead' message.
+If provided, WHEN should be a string indicating when the function
+was first made obsolete, for example a date or a release number."
+  (interactive "aMake function obsolete: \nxObsoletion replacement: ")
+  (let ((handler (get fn 'byte-compile)))
+    (if (eq 'byte-compile-obsolete handler)
+	(setq handler (nth 1 (get fn 'byte-obsolete-info)))
+      (put fn 'byte-compile 'byte-compile-obsolete))
+    (put fn 'byte-obsolete-info (list new handler when)))
+  fn)
+
+(defun make-obsolete-variable (var new &optional when)
+  "Make the byte-compiler warn that VARIABLE is obsolete,
+and NEW should be used instead.  If NEW is a string, then that is the
+`use instead' message.
+If provided, WHEN should be a string indicating when the variable
+was first made obsolete, for example a date or a release number."
+  (interactive
+   (list
+    (let ((str (completing-read "Make variable obsolete: " obarray 'boundp t)))
+      (if (equal str "") (error ""))
+      (intern str))
+    (car (read-from-string (read-string "Obsoletion replacement: ")))))
+  (put var 'byte-obsolete-variable (cons new when))
+  var)
+
+(put 'dont-compile 'lisp-indent-hook 0)
+(defmacro dont-compile (&rest body)
+  "Like `progn', but the body always runs interpreted (not compiled).
+If you think you need this, you're probably making a mistake somewhere."
+  (list 'eval (list 'quote (if (cdr body) (cons 'progn body) (car body)))))
+
+
+;;; interface to evaluating things at compile time and/or load time
+;;; these macro must come after any uses of them in this file, as their
+;;; definition in the file overrides the magic definitions on the
+;;; byte-compile-macro-environment.
+
+(put 'eval-when-compile 'lisp-indent-hook 0)
+(defmacro eval-when-compile (&rest body)
+  "Like `progn', but evaluates the body at compile time.
+The result of the body appears to the compiler as a quoted constant."
+  ;; Not necessary because we have it in b-c-initial-macro-environment
+  ;; (list 'quote (eval (cons 'progn body)))
+  (cons 'progn body))
+
+(put 'eval-and-compile 'lisp-indent-hook 0)
+(defmacro eval-and-compile (&rest body)
+  "Like `progn', but evaluates the body at compile time and at load time."
+  ;; Remember, it's magic.
+  (cons 'progn body))
+
+(defun with-no-warnings (&optional first &rest body)
+  "Like `progn', but prevents compiler warnings in the body."
+  ;; The implementation for the interpreter is basically trivial.
+  (if body (car (last body))
+    first))
+
+
+;;; I nuked this because it's not a good idea for users to think of using it.
+;;; These options are a matter of installation preference, and have nothing to
+;;; with particular source files; it's a mistake to suggest to users
+;;; they should associate these with particular source files.
+;;; There is hardly any reason to change these parameters, anyway.
+;;; --rms.
+
+;; (put 'byte-compiler-options 'lisp-indent-hook 0)
+;; (defmacro byte-compiler-options (&rest args)
+;;   "Set some compilation-parameters for this file.  This will affect only the
+;; file in which it appears; this does nothing when evaluated, and when loaded
+;; from a .el file.
+;;
+;; Each argument to this macro must be a list of a key and a value.
+;;
+;;   Keys:		  Values:		Corresponding variable:
+;;
+;;   verbose	  t, nil		byte-compile-verbose
+;;   optimize	  t, nil, source, byte	byte-compile-optimize
+;;   warnings	  list of warnings	byte-compile-warnings
+;; 		      Legal elements: (callargs redefine free-vars unresolved)
+;;   file-format	  emacs18, emacs19	byte-compile-compatibility
+;;
+;; For example, this might appear at the top of a source file:
+;;
+;;     (byte-compiler-options
+;;       (optimize t)
+;;       (warnings (- free-vars))		; Don't warn about free variables
+;;       (file-format emacs19))"
+;;   nil)
+
+;;; byte-run.el ends here