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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>
;; 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, 675 Mass Ave, Cambridge, MA 02139, 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)
"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."
(interactive "aMake function obsolete: \nxObsoletion replacement: ")
(let ((handler (get fn 'byte-compile)))
(if (eq 'byte-compile-obsolete handler)
(setcar (get fn 'byte-obsolete-info) new)
(put fn 'byte-obsolete-info (cons new handler))
(put fn 'byte-compile 'byte-compile-obsolete)))
fn)
(defun make-obsolete-variable (var new)
"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."
(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 new)
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))
;;; 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
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