;;; bytecomp.el --- compilation of Lisp code into byte code -*- lexical-binding: t -*-
-;; Copyright (C) 1985-1987, 1992, 1994, 1998, 2000-2011
-;; Free Software Foundation, Inc.
+;; Copyright (C) 1985-1987, 1992, 1994, 1998, 2000-2013 Free Software
+;; Foundation, Inc.
;; Author: Jamie Zawinski <jwz@lucid.com>
;; Hallvard Furuseth <hbf@ulrik.uio.no>
(require 'backquote)
(require 'macroexp)
(require 'cconv)
-(eval-when-compile (require 'cl))
+(eval-when-compile (require 'cl-lib))
(or (fboundp 'defsubst)
;; This really ought to be loaded already!
;; This can be the 'byte-compile property of any symbol.
(autoload 'byte-compile-inline-expand "byte-opt")
-;; This is the entrypoint to the lapcode optimizer pass1.
+;; This is the entry point to the lapcode optimizer pass1.
(autoload 'byte-optimize-form "byte-opt")
-;; This is the entrypoint to the lapcode optimizer pass2.
+;; This is the entry point to the lapcode optimizer pass2.
(autoload 'byte-optimize-lapcode "byte-opt")
(autoload 'byte-compile-unfold-lambda "byte-opt")
"List of commands that are not meant to be called from Lisp.")
(defvar byte-compile-not-obsolete-vars nil
- "If non-nil, a list of variables that shouldn't be reported as obsolete.")
+ "List of variables that shouldn't be reported as obsolete.")
+(defvar byte-compile-global-not-obsolete-vars nil
+ "Global list of variables that shouldn't be reported as obsolete.")
(defvar byte-compile-not-obsolete-funcs nil
- "If non-nil, a list of functions that shouldn't be reported as obsolete.")
+ "List of functions that shouldn't be reported as obsolete.")
(defcustom byte-compile-generate-call-tree nil
"Non-nil means collect call-graph information when compiling.
(defconst byte-compile-initial-macro-environment
'(
-;; (byte-compiler-options . (lambda (&rest forms)
-;; (apply 'byte-compiler-options-handler forms)))
+ ;; (byte-compiler-options . (lambda (&rest forms)
+ ;; (apply 'byte-compiler-options-handler forms)))
(declare-function . byte-compile-macroexpand-declare-function)
(eval-when-compile . (lambda (&rest body)
(list
(byte-compile-top-level
(byte-compile-preprocess (cons 'progn body)))))))
(eval-and-compile . (lambda (&rest body)
- (byte-compile-eval-before-compile (cons 'progn body))
- (cons 'progn body))))
+ ;; Byte compile before running it. Do it piece by
+ ;; piece, in case further expressions need earlier
+ ;; ones to be evaluated already, as is the case in
+ ;; eieio.el.
+ `(progn
+ ,@(mapcar (lambda (exp)
+ (let ((cexp
+ (byte-compile-top-level
+ (byte-compile-preprocess
+ exp))))
+ (eval cexp)
+ cexp))
+ body)))))
"The default macro-environment passed to macroexpand by the compiler.
Placing a macro here will cause a macro to have different semantics when
expanded by the compiler as when expanded by the interpreter.")
;; Also, this lets us notice references to free variables.
(defmacro byte-compile-push-bytecodes (&rest args)
- "Push BYTE... onto BYTES, and increment PC by the number of bytes pushed.
-ARGS is of the form (BYTE... BYTES PC), where BYTES and PC are variable names.
-BYTES and PC are updated after evaluating all the arguments."
+ "Push bytes onto BVAR, and increment CVAR by the number of bytes pushed.
+BVAR and CVAR are variables which are updated after evaluating
+all the arguments.
+
+\(fn BYTE1 BYTE2 ... BYTEn BVAR CVAR)"
(let ((byte-exprs (butlast args 2))
(bytes-var (car (last args 2)))
(pc-var (car (last args))))
`(setq ,bytes-var ,(if (null (cdr byte-exprs))
- `(progn (assert (<= 0 ,(car byte-exprs)))
+ `(progn (cl-assert (<= 0 ,(car byte-exprs)))
(cons ,@byte-exprs ,bytes-var))
`(nconc (list ,@(reverse byte-exprs)) ,bytes-var))
,pc-var (+ ,(length byte-exprs) ,pc-var))))
(defmacro byte-compile-push-bytecode-const2 (opcode const2 bytes pc)
"Push OPCODE and the two-byte constant CONST2 onto BYTES, and add 3 to PC.
-CONST2 may be evaulated multiple times."
+CONST2 may be evaluated multiple times."
`(byte-compile-push-bytecodes ,opcode (logand ,const2 255) (lsh ,const2 -8)
,bytes ,pc))
(setcar (cdr bytes-tail) (logand pc 255))
(setcar bytes-tail (lsh pc -8))
;; FIXME: Replace this by some workaround.
- (if (> (car bytes) 255) (error "Bytecode overflow")))
+ (if (> (car bytes-tail) 255) (error "Bytecode overflow")))
(apply 'unibyte-string (nreverse bytes))))
(defun byte-compile-cl-file-p (file)
"Return non-nil if FILE is one of the CL files."
(and (stringp file)
- (string-match "^cl\\>" (file-name-nondirectory file))))
+ (string-match "^cl\\.el" (file-name-nondirectory file))))
(defun byte-compile-eval (form)
"Eval FORM and mark the functions defined therein.
(let ((xs (pop hist-new))
old-autoloads)
;; Make sure the file was not already loaded before.
- (unless (or (assoc (car xs) hist-orig)
- ;; Don't give both the "noruntime" and
- ;; "cl-functions" warning for the same function.
- ;; FIXME This seems incorrect - these are two
- ;; independent warnings. For example, you may be
- ;; choosing to see the cl warnings but ignore them.
- ;; You probably don't want to ignore noruntime in the
- ;; same way.
- (and (byte-compile-warning-enabled-p 'cl-functions)
- (byte-compile-cl-file-p (car xs))))
+ (unless (assoc (car xs) hist-orig)
(dolist (s xs)
(cond
- ((symbolp s)
- (unless (memq s old-autoloads)
- (push s byte-compile-noruntime-functions)))
((and (consp s) (eq t (car s)))
(push (cdr s) old-autoloads))
- ((and (consp s) (eq 'autoload (car s)))
- (push (cdr s) byte-compile-noruntime-functions)))))))
+ ((and (consp s) (memq (car s) '(autoload defun)))
+ (unless (memq (cdr s) old-autoloads)
+ (push (cdr s) byte-compile-noruntime-functions))))))))
;; Go through current-load-list for the locally defined funs.
(let (old-autoloads)
(while (and hist-nil-new (not (eq hist-nil-new hist-nil-orig)))
(defvar byte-compile-last-warned-form nil)
(defvar byte-compile-last-logged-file nil)
+(defvar byte-compile-root-dir nil
+ "Directory relative to which file names in error messages are written.")
+
+;; FIXME: We should maybe extend abbreviate-file-name with an optional DIR
+;; argument to try and use a relative file-name.
+(defun byte-compile-abbreviate-file (file &optional dir)
+ (let ((f1 (abbreviate-file-name file))
+ (f2 (file-relative-name file dir)))
+ (if (< (length f2) (length f1)) f2 f1)))
;; This is used as warning-prefix for the compiler.
;; It is always called with the warnings buffer current.
(defun byte-compile-warning-prefix (level entry)
(let* ((inhibit-read-only t)
- (dir default-directory)
+ (dir (or byte-compile-root-dir default-directory))
(file (cond ((stringp byte-compile-current-file)
- (format "%s:" (file-relative-name
+ (format "%s:" (byte-compile-abbreviate-file
byte-compile-current-file dir)))
((bufferp byte-compile-current-file)
(format "Buffer %s:"
(buffer-name byte-compile-current-file)))
+ ;; We might be simply loading a file that
+ ;; contains explicit calls to byte-compile functions.
+ ((stringp load-file-name)
+ (format "%s:" (byte-compile-abbreviate-file
+ load-file-name dir)))
(t "")))
(pos (if (and byte-compile-current-file
(integerp byte-compile-read-position))
(defun byte-compile-log-warning (string &optional fill level)
(let ((warning-prefix-function 'byte-compile-warning-prefix)
(warning-type-format "")
- (warning-fill-prefix (if fill " "))
- (inhibit-read-only t))
+ (warning-fill-prefix (if fill " ")))
(display-warning 'bytecomp string level byte-compile-log-buffer)))
(defun byte-compile-warn (format &rest args)
"Warn that SYMBOL (a variable or function) is obsolete."
(when (byte-compile-warning-enabled-p 'obsolete)
(let* ((funcp (get symbol 'byte-obsolete-info))
- (obsolete (or funcp (get symbol 'byte-obsolete-variable)))
- (instead (car obsolete))
- (asof (nth 2 obsolete)))
+ (msg (macroexp--obsolete-warning
+ symbol
+ (or funcp (get symbol 'byte-obsolete-variable))
+ (if funcp "function" "variable"))))
(unless (and funcp (memq symbol byte-compile-not-obsolete-funcs))
- (byte-compile-warn "`%s' is an obsolete %s%s%s" symbol
- (if funcp "function" "variable")
- (if asof (concat " (as of Emacs " asof ")") "")
- (cond ((stringp instead)
- (concat "; " instead))
- (instead
- (format "; use `%s' instead." instead))
- (t ".")))))))
+ (byte-compile-warn "%s" msg)))))
(defun byte-compile-report-error (error-info)
"Report Lisp error in compilation. ERROR-INFO is the error data."
(t fn)))))))
(defun byte-compile-arglist-signature (arglist)
- (if (integerp arglist)
- ;; New style byte-code arglist.
- (cons (logand arglist 127) ;Mandatory.
- (if (zerop (logand arglist 128)) ;No &rest.
- (lsh arglist -8))) ;Nonrest.
- ;; Old style byte-code, or interpreted function.
+ (cond
+ ;; New style byte-code arglist.
+ ((integerp arglist)
+ (cons (logand arglist 127) ;Mandatory.
+ (if (zerop (logand arglist 128)) ;No &rest.
+ (lsh arglist -8)))) ;Nonrest.
+ ;; Old style byte-code, or interpreted function.
+ ((listp arglist)
(let ((args 0)
opts
restp)
(setq opts (1+ opts))
(setq args (1+ args)))))
(setq arglist (cdr arglist)))
- (cons args (if restp nil (if opts (+ args opts) args))))))
+ (cons args (if restp nil (if opts (+ args opts) args)))))
+ ;; Unknown arglist.
+ (t '(0))))
(defun byte-compile-arglist-signatures-congruent-p (old new)
;; and/or remember its arity if it's unknown.
(or (and (or def (fboundp (car form))) ; might be a subr or autoload.
(not (memq (car form) byte-compile-noruntime-functions)))
- (eq (car form) byte-compile-current-form) ; ## this doesn't work
- ; with recursion.
+ (eq (car form) byte-compile-current-form) ; ## This doesn't work
+ ; with recursion.
;; It's a currently-undefined function.
;; Remember number of args in call.
(let ((cons (assq (car form) byte-compile-unresolved-functions))
;; Warn if the function or macro is being redefined with a different
;; number of arguments.
-(defun byte-compile-arglist-warn (form macrop)
- (let* ((name (nth 1 form))
- (old (byte-compile-fdefinition name macrop))
+(defun byte-compile-arglist-warn (name arglist macrop)
+ (let* ((old (byte-compile-fdefinition name macrop))
(initial (and macrop
(cdr (assq name
byte-compile-initial-macro-environment)))))
(`(closure ,_ ,args . ,_) args)
((pred byte-code-function-p) (aref old 0))
(t '(&rest def)))))
- (sig2 (byte-compile-arglist-signature (nth 2 form))))
+ (sig2 (byte-compile-arglist-signature arglist)))
(unless (byte-compile-arglist-signatures-congruent-p sig1 sig2)
(byte-compile-set-symbol-position name)
(byte-compile-warn
"%s %s used to take %s %s, now takes %s"
- (if (eq (car form) 'defun) "function" "macro")
+ (if macrop "macro" "function")
name
(byte-compile-arglist-signature-string sig1)
(if (equal sig1 '(1 . 1)) "argument" "arguments")
nums sig min max)
(when calls
(when (and (symbolp name)
- (eq (get name 'byte-optimizer)
+ (eq (function-get name 'byte-optimizer)
'byte-compile-inline-expand))
(byte-compile-warn "defsubst `%s' was used before it was defined"
name))
- (setq sig (byte-compile-arglist-signature (nth 2 form))
+ (setq sig (byte-compile-arglist-signature arglist)
nums (sort (copy-sequence (cdr calls)) (function <))
min (car nums)
max (car (nreverse nums)))
;; These aren't all aliases of subrs, so not trivial to
;; avoid hardwiring the list.
(not (memq func
- '(cl-block-wrapper cl-block-throw
+ '(cl--block-wrapper cl--block-throw
multiple-value-call nth-value
copy-seq first second rest endp cl-member
;; These are included in generated code
;; that can't be called except at compile time
;; or unless cl is loaded anyway.
- cl-defsubst-expand cl-struct-setf-expander
+ cl--defsubst-expand cl-struct-setf-expander
;; These would sometimes be warned about
;; but such warnings are never useful,
;; so don't warn about them.
macroexpand cl-macroexpand-all
- cl-compiling-file))))
+ cl--compiling-file))))
(byte-compile-warn "function `%s' from cl package called at runtime"
func)))
form)
nil)
\f
-(defsubst byte-compile-const-symbol-p (symbol &optional any-value)
- "Non-nil if SYMBOL is constant.
-If ANY-VALUE is nil, only return non-nil if the value of the symbol is the
-symbol itself."
- (or (memq symbol '(nil t))
- (keywordp symbol)
- (if any-value
- (or (memq symbol byte-compile-const-variables)
- ;; FIXME: We should provide a less intrusive way to find out
- ;; if a variable is "constant".
- (and (boundp symbol)
- (condition-case nil
- (progn (set symbol (symbol-value symbol)) nil)
- (setting-constant t)))))))
-
-(defmacro byte-compile-constp (form)
- "Return non-nil if FORM is a constant."
- `(cond ((consp ,form) (eq (car ,form) 'quote))
- ((not (symbolp ,form)))
- ((byte-compile-const-symbol-p ,form))))
+;; Dynamically bound in byte-compile-from-buffer.
+;; NB also used in cl.el and cl-macs.el.
+(defvar byte-compile--outbuffer)
(defmacro byte-compile-close-variables (&rest body)
(declare (debug t))
- (cons 'let
- (cons '(;;
- ;; Close over these variables to encapsulate the
- ;; compilation state
- ;;
- (byte-compile-macro-environment
- ;; Copy it because the compiler may patch into the
- ;; macroenvironment.
- (copy-alist byte-compile-initial-macro-environment))
- (byte-compile-function-environment nil)
- (byte-compile-bound-variables nil)
- (byte-compile-const-variables nil)
- (byte-compile-free-references nil)
- (byte-compile-free-assignments nil)
- ;;
- ;; Close over these variables so that `byte-compiler-options'
- ;; can change them on a per-file basis.
- ;;
- (byte-compile-verbose byte-compile-verbose)
- (byte-optimize byte-optimize)
- (byte-compile-dynamic byte-compile-dynamic)
- (byte-compile-dynamic-docstrings
- byte-compile-dynamic-docstrings)
-;; (byte-compile-generate-emacs19-bytecodes
-;; byte-compile-generate-emacs19-bytecodes)
- (byte-compile-warnings byte-compile-warnings)
- )
- body)))
+ `(let (;;
+ ;; Close over these variables to encapsulate the
+ ;; compilation state
+ ;;
+ (byte-compile-macro-environment
+ ;; Copy it because the compiler may patch into the
+ ;; macroenvironment.
+ (copy-alist byte-compile-initial-macro-environment))
+ (byte-compile--outbuffer nil)
+ (byte-compile-function-environment nil)
+ (byte-compile-bound-variables nil)
+ (byte-compile-const-variables nil)
+ (byte-compile-free-references nil)
+ (byte-compile-free-assignments nil)
+ ;;
+ ;; Close over these variables so that `byte-compiler-options'
+ ;; can change them on a per-file basis.
+ ;;
+ (byte-compile-verbose byte-compile-verbose)
+ (byte-optimize byte-optimize)
+ (byte-compile-dynamic byte-compile-dynamic)
+ (byte-compile-dynamic-docstrings
+ byte-compile-dynamic-docstrings)
+ ;; (byte-compile-generate-emacs19-bytecodes
+ ;; byte-compile-generate-emacs19-bytecodes)
+ (byte-compile-warnings byte-compile-warnings)
+ )
+ ,@body))
(defmacro displaying-byte-compile-warnings (&rest body)
(declare (debug t))
(setq directories (nconc directories (list source))))
;; It is an ordinary file. Decide whether to compile it.
(if (and (string-match emacs-lisp-file-regexp source)
+ ;; The next 2 tests avoid compiling lock files
(file-readable-p source)
+ (not (string-match "\\`\\.#" file))
(not (auto-save-file-name-p source))
(not (string-equal dir-locals-file
(file-name-nondirectory source))))
- (progn (case (byte-recompile-file source force arg)
- (no-byte-compile (setq skip-count (1+ skip-count)))
- ((t) (setq file-count (1+ file-count)))
- ((nil) (setq fail-count (1+ fail-count))))
+ (progn (cl-incf
+ (pcase (byte-recompile-file source force arg)
+ (`no-byte-compile skip-count)
+ (`t file-count)
+ (_ fail-count)))
(or noninteractive
(message "Checking %s..." directory))
(if (not (eq last-dir directory))
"Recompile FILENAME file if it needs recompilation.
This happens when its `.elc' file is older than itself.
-If the `.elc' file exists and is up-to-date, normally this
-function *does not* compile FILENAME. However, if the
-prefix argument FORCE is set, that means do compile
-FILENAME even if the destination already exists and is
-up-to-date.
+If the `.elc' file exists and is up-to-date, normally this function
+*does not* compile FILENAME. If the prefix argument FORCE is non-nil,
+however, it compiles FILENAME even if the destination already
+exists and is up-to-date.
-If the `.elc' file does not exist, normally this function *does
-not* compile FILENAME. If ARG is 0, that means
-compile the file even if it has never been compiled before.
-A nonzero ARG means ask the user.
+If the `.elc' file does not exist, normally this function *does not*
+compile FILENAME. If optional argument ARG is 0, it compiles
+the input file even if the `.elc' file does not exist.
+Any other non-nil value of ARG means to ask the user.
-If LOAD is set, `load' the file after compiling.
+If optional argument LOAD is non-nil, loads the file after compiling.
-The value returned is the value returned by `byte-compile-file',
-or 'no-byte-compile if the file did not need recompilation."
+If compilation is needed, this functions returns the result of
+`byte-compile-file'; otherwise it returns 'no-byte-compile."
(interactive
(let ((file buffer-file-name)
(file-name nil)
(if (and noninteractive (not byte-compile-verbose))
(message "Compiling %s..." filename))
(byte-compile-file filename load))
- (when load (load filename))
+ (when load
+ (load (if (file-exists-p dest) dest filename)))
'no-byte-compile)))
+(defvar byte-compile-level 0 ; bug#13787
+ "Depth of a recursive byte compilation.")
+
;;;###autoload
(defun byte-compile-file (filename &optional load)
"Compile a file of Lisp code named FILENAME into a file of byte code.
(setq target-file (byte-compile-dest-file filename))
(setq byte-compile-dest-file target-file)
(with-current-buffer
- (setq input-buffer (get-buffer-create " *Compiler Input*"))
+ ;; It would be cleaner to use a temp buffer, but if there was
+ ;; an error, we leave this buffer around for diagnostics.
+ ;; Its name is documented in the lispref.
+ (setq input-buffer (get-buffer-create
+ (concat " *Compiler Input*"
+ (if (zerop byte-compile-level) ""
+ (format "-%s" byte-compile-level)))))
(erase-buffer)
(setq buffer-file-coding-system nil)
;; Always compile an Emacs Lisp file as multibyte
(set-buffer-multibyte nil))
;; Run hooks including the uncompression hook.
;; If they change the file name, then change it for the output also.
- (letf ((buffer-file-name filename)
- ((default-value 'major-mode) 'emacs-lisp-mode)
- ;; Ignore unsafe local variables.
- ;; We only care about a few of them for our purposes.
- (enable-local-variables :safe)
- (enable-local-eval nil))
- ;; Arg of t means don't alter enable-local-variables.
- (normal-mode t)
- (setq filename buffer-file-name))
+ (let ((buffer-file-name filename)
+ (dmm (default-value 'major-mode))
+ ;; Ignore unsafe local variables.
+ ;; We only care about a few of them for our purposes.
+ (enable-local-variables :safe)
+ (enable-local-eval nil))
+ (unwind-protect
+ (progn
+ (setq-default major-mode 'emacs-lisp-mode)
+ ;; Arg of t means don't alter enable-local-variables.
+ (normal-mode t))
+ (setq-default major-mode dmm))
+ ;; There may be a file local variable setting (bug#10419).
+ (setq buffer-read-only nil
+ filename buffer-file-name))
+ ;; Don't inherit lexical-binding from caller (bug#12938).
+ (unless (local-variable-p 'lexical-binding)
+ (setq-local lexical-binding nil))
;; Set the default directory, in case an eval-when-compile uses it.
(setq default-directory (file-name-directory filename)))
;; Check if the file's local variables explicitly specify not to
(if (with-current-buffer input-buffer no-byte-compile)
(progn
;; (message "%s not compiled because of `no-byte-compile: %s'"
- ;; (file-relative-name filename)
+ ;; (byte-compile-abbreviate-file filename)
;; (with-current-buffer input-buffer no-byte-compile))
(when (file-exists-p target-file)
(message "%s deleted because of `no-byte-compile: %s'"
- (file-relative-name target-file)
+ (byte-compile-abbreviate-file target-file)
(buffer-local-value 'no-byte-compile input-buffer))
(condition-case nil (delete-file target-file) (error nil)))
;; We successfully didn't compile this file.
;; within byte-compile-from-buffer lingers in that buffer.
(setq output-buffer
(save-current-buffer
- (byte-compile-from-buffer input-buffer)))
+ (let ((byte-compile-level (1+ byte-compile-level)))
+ (byte-compile-from-buffer input-buffer))))
(if byte-compiler-error-flag
nil
(when byte-compile-verbose
(with-current-buffer output-buffer
(goto-char (point-max))
(insert "\n") ; aaah, unix.
- (if (file-writable-p target-file)
- ;; We must disable any code conversion here.
- (let* ((coding-system-for-write 'no-conversion)
- ;; Write to a tempfile so that if another Emacs
- ;; process is trying to load target-file (eg in a
- ;; parallel bootstrap), it does not risk getting a
- ;; half-finished file. (Bug#4196)
- (tempfile (make-temp-name target-file))
- (kill-emacs-hook
- (cons (lambda () (ignore-errors (delete-file tempfile)))
- kill-emacs-hook)))
- (if (memq system-type '(ms-dos 'windows-nt))
- (setq buffer-file-type t))
- (write-region (point-min) (point-max) tempfile nil 1)
- ;; This has the intentional side effect that any
- ;; hard-links to target-file continue to
- ;; point to the old file (this makes it possible
- ;; for installed files to share disk space with
- ;; the build tree, without causing problems when
- ;; emacs-lisp files in the build tree are
- ;; recompiled). Previously this was accomplished by
- ;; deleting target-file before writing it.
- (rename-file tempfile target-file t)
- (message "Wrote %s" target-file))
- ;; This is just to give a better error message than write-region
- (signal 'file-error
- (list "Opening output file"
- (if (file-exists-p target-file)
- "cannot overwrite file"
- "directory not writable or nonexistent")
- target-file)))
+ (if (file-writable-p target-file)
+ ;; We must disable any code conversion here.
+ (let* ((coding-system-for-write 'no-conversion)
+ ;; Write to a tempfile so that if another Emacs
+ ;; process is trying to load target-file (eg in a
+ ;; parallel bootstrap), it does not risk getting a
+ ;; half-finished file. (Bug#4196)
+ (tempfile (make-temp-name target-file))
+ (kill-emacs-hook
+ (cons (lambda () (ignore-errors (delete-file tempfile)))
+ kill-emacs-hook)))
+ (write-region (point-min) (point-max) tempfile nil 1)
+ ;; This has the intentional side effect that any
+ ;; hard-links to target-file continue to
+ ;; point to the old file (this makes it possible
+ ;; for installed files to share disk space with
+ ;; the build tree, without causing problems when
+ ;; emacs-lisp files in the build tree are
+ ;; recompiled). Previously this was accomplished by
+ ;; deleting target-file before writing it.
+ (rename-file tempfile target-file t)
+ (message "Wrote %s" target-file))
+ ;; This is just to give a better error message than write-region
+ (signal 'file-error
+ (list "Opening output file"
+ (if (file-exists-p target-file)
+ "cannot overwrite file"
+ "directory not writable or nonexistent")
+ target-file)))
(kill-buffer (current-buffer)))
(if (and byte-compile-generate-call-tree
(or (eq t byte-compile-generate-call-tree)
(insert "\n"))
((message "%s" (prin1-to-string value)))))))
-;; Dynamically bound in byte-compile-from-buffer.
-;; NB also used in cl.el and cl-macs.el.
-(defvar byte-compile--outbuffer)
-
(defun byte-compile-from-buffer (inbuffer)
- (let (byte-compile--outbuffer
- (byte-compile-current-buffer inbuffer)
+ (let ((byte-compile-current-buffer inbuffer)
(byte-compile-read-position nil)
(byte-compile-last-position nil)
;; Prevent truncation of flonums and lists as we read and print them
(byte-compile-close-variables
(with-current-buffer
(setq byte-compile--outbuffer
- (get-buffer-create " *Compiler Output*"))
+ (get-buffer-create
+ (concat " *Compiler Output*"
+ (if (<= byte-compile-level 1) ""
+ (format "-%s" (1- byte-compile-level))))))
(set-buffer-multibyte t)
(erase-buffer)
;; (emacs-lisp-mode)
;; if the buffer contains multibyte characters.
(and byte-compile-current-file
(with-current-buffer byte-compile--outbuffer
- (byte-compile-fix-header byte-compile-current-file)))))
- byte-compile--outbuffer))
+ (byte-compile-fix-header byte-compile-current-file))))
+ byte-compile--outbuffer)))
-(defun byte-compile-fix-header (filename)
+(defun byte-compile-fix-header (_filename)
"If the current buffer has any multibyte characters, insert a version test."
(when (< (point-max) (position-bytes (point-max)))
(goto-char (point-min))
;; don't try to check the version number.
" (< (aref emacs-version (1- (length emacs-version))) ?A)\n"
(format " (string-lessp emacs-version \"%s\")\n" minimum-version)
- " (error \"`"
- ;; prin1-to-string is used to quote backslashes.
- (substring (prin1-to-string (file-name-nondirectory filename))
- 1 -1)
- (format "' was compiled for Emacs %s or later\"))\n\n"
- minimum-version))
+ ;; Because the header must fit in a fixed width, we cannot
+ ;; insert arbitrary-length file names (Bug#11585).
+ " (error \"`%s' was compiled for "
+ (format "Emacs %s or later\" #$))\n\n" minimum-version))
;; Now compensate for any change in size, to make sure all
;; positions in the file remain valid.
(setq delta (- (point-max) old-header-end))
";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;\n\n"))))
(defun byte-compile-output-file-form (form)
- ;; writes the given form to the output buffer, being careful of docstrings
- ;; in defun, defmacro, defvar, defvaralias, defconst, autoload and
+ ;; Write the given form to the output buffer, being careful of docstrings
+ ;; in defvar, defvaralias, defconst, autoload and
;; custom-declare-variable because make-docfile is so amazingly stupid.
;; defalias calls are output directly by byte-compile-file-form-defmumble;
;; it does not pay to first build the defalias in defmumble and then parse
;; it here.
- (if (and (memq (car-safe form) '(defun defmacro defvar defvaralias defconst
- autoload custom-declare-variable))
- (stringp (nth 3 form)))
- (byte-compile-output-docform nil nil '("\n(" 3 ")") form nil
- (memq (car form)
- '(defvaralias autoload
- custom-declare-variable)))
- (let ((print-escape-newlines t)
- (print-length nil)
- (print-level nil)
- (print-quoted t)
- (print-gensym t)
- (print-circle ; handle circular data structures
- (not byte-compile-disable-print-circle)))
+ (let ((print-escape-newlines t)
+ (print-length nil)
+ (print-level nil)
+ (print-quoted t)
+ (print-gensym t)
+ (print-circle ; Handle circular data structures.
+ (not byte-compile-disable-print-circle)))
+ (if (and (memq (car-safe form) '(defvar defvaralias defconst
+ autoload custom-declare-variable))
+ (stringp (nth 3 form)))
+ (byte-compile-output-docform nil nil '("\n(" 3 ")") form nil
+ (memq (car form)
+ '(defvaralias autoload
+ custom-declare-variable)))
(princ "\n" byte-compile--outbuffer)
(prin1 form byte-compile--outbuffer)
nil)))
-(defvar print-gensym-alist) ;Used before print-circle existed.
(defvar byte-compile--for-effect)
(defun byte-compile-output-docform (preface name info form specindex quoted)
(setq position
(byte-compile-output-as-comment
(nth (nth 1 info) form) nil))
- (setq position (- (position-bytes position) (point-min) -1))
;; If the doc string starts with * (a user variable),
;; negate POSITION.
(if (and (stringp (nth (nth 1 info) form))
(insert preface)
(prin1 name byte-compile--outbuffer)))
(insert (car info))
- (let ((print-escape-newlines t)
- (print-quoted t)
- ;; For compatibility with code before print-circle,
- ;; use a cons cell to say that we want
- ;; print-gensym-alist not to be cleared
- ;; between calls to print functions.
- (print-gensym '(t))
- (print-circle ; handle circular data structures
- (not byte-compile-disable-print-circle))
- print-gensym-alist ; was used before print-circle existed.
- (print-continuous-numbering t)
+ (let ((print-continuous-numbering t)
print-number-table
- (index 0))
+ (index 0)
+ ;; FIXME: The bindings below are only needed for when we're
+ ;; called from ...-defmumble.
+ (print-escape-newlines t)
+ (print-length nil)
+ (print-level nil)
+ (print-quoted t)
+ (print-gensym t)
+ (print-circle ; Handle circular data structures.
+ (not byte-compile-disable-print-circle)))
(prin1 (car form) byte-compile--outbuffer)
(while (setq form (cdr form))
(setq index (1+ index))
(byte-compile-output-as-comment
(cons (car form) (nth 1 form))
t)))
- (setq position (- (position-bytes position)
- (point-min) -1))
(princ (format "(#$ . %d) nil" position)
byte-compile--outbuffer)
(setq form (cdr form))
(byte-compile-keep-pending form)))))
;; Functions and variables with doc strings must be output separately,
-;; so make-docfile can recognise them. Most other things can be output
+;; so make-docfile can recognize them. Most other things can be output
;; as byte-code.
(put 'autoload 'byte-hunk-handler 'byte-compile-file-form-autoload)
(defun byte-compile-file-form-autoload (form)
(and (let ((form form))
- (while (if (setq form (cdr form)) (byte-compile-constp (car form))))
+ (while (if (setq form (cdr form)) (macroexp-const-p (car form))))
(null form)) ;Constants only
(eval (nth 5 form)) ;Macro
(eval form)) ;Define the autoload.
(when (and (consp (nth 1 form))
(eq (car (nth 1 form)) 'quote)
(consp (cdr (nth 1 form)))
- (symbolp (nth 1 (nth 1 form))))
+ (symbolp (nth 1 (nth 1 form)))
+ ;; Don't add it if it's already defined. Otherwise, it might
+ ;; hide the actual definition.
+ (not (fboundp (nth 1 (nth 1 form)))))
(push (cons (nth 1 (nth 1 form))
(cons 'autoload (cdr (cdr form))))
byte-compile-function-environment)
(put 'defvar 'byte-hunk-handler 'byte-compile-file-form-defvar)
(put 'defconst 'byte-hunk-handler 'byte-compile-file-form-defvar)
(defun byte-compile-file-form-defvar (form)
- (if (null (nth 3 form))
- ;; Since there is no doc string, we can compile this as a normal form,
- ;; and not do a file-boundary.
- (byte-compile-keep-pending form)
- (when (and (symbolp (nth 1 form))
- (not (string-match "[-*/:$]" (symbol-name (nth 1 form))))
- (byte-compile-warning-enabled-p 'lexical))
- (byte-compile-warn "global/dynamic var `%s' lacks a prefix"
- (nth 1 form)))
- (push (nth 1 form) byte-compile-bound-variables)
- (if (eq (car form) 'defconst)
- (push (nth 1 form) byte-compile-const-variables))
+ (when (and (symbolp (nth 1 form))
+ (not (string-match "[-*/:$]" (symbol-name (nth 1 form))))
+ (byte-compile-warning-enabled-p 'lexical))
+ (byte-compile-warn "global/dynamic var `%s' lacks a prefix"
+ (nth 1 form)))
+ (push (nth 1 form) byte-compile-bound-variables)
+ (if (eq (car form) 'defconst)
+ (push (nth 1 form) byte-compile-const-variables))
+ (if (and (null (cddr form)) ;No `value' provided.
+ (eq (car form) 'defvar)) ;Just a declaration.
+ nil
(cond ((consp (nth 2 form))
- (setq form (copy-sequence form))
- (setcar (cdr (cdr form))
- (byte-compile-top-level (nth 2 form) nil 'file))))
+ (setq form (copy-sequence form))
+ (setcar (cdr (cdr form))
+ (byte-compile-top-level (nth 2 form) nil 'file))))
form))
(put 'define-abbrev-table 'byte-hunk-handler
(when (byte-compile-warning-enabled-p 'callargs)
(byte-compile-nogroup-warn form))
(push (nth 1 (nth 1 form)) byte-compile-bound-variables)
- ;; Don't compile the expression because it may be displayed to the user.
- ;; (when (eq (car-safe (nth 2 form)) 'quote)
- ;; ;; (nth 2 form) is meant to evaluate to an expression, so if we have the
- ;; ;; final value already, we can byte-compile it.
- ;; (setcar (cdr (nth 2 form))
- ;; (byte-compile-top-level (cadr (nth 2 form)) nil 'file)))
- (let ((tail (nthcdr 4 form)))
- (while tail
- (unless (keywordp (car tail)) ;No point optimizing keywords.
- ;; Compile the keyword arguments.
- (setcar tail (byte-compile-top-level (car tail) nil 'file)))
- (setq tail (cdr tail))))
- form)
+ (byte-compile-keep-pending form))
(put 'require 'byte-hunk-handler 'byte-compile-file-form-require)
(defun byte-compile-file-form-require (form)
(nth 1 (nth 1 form))
(byte-compile-keep-pending form)))
-(put 'defun 'byte-hunk-handler 'byte-compile-file-form-defun)
-(defun byte-compile-file-form-defun (form)
- (byte-compile-file-form-defmumble form nil))
-
-(put 'defmacro 'byte-hunk-handler 'byte-compile-file-form-defmacro)
-(defun byte-compile-file-form-defmacro (form)
- (byte-compile-file-form-defmumble form t))
-
-(defun byte-compile-defmacro-declaration (form)
- "Generate code for declarations in macro definitions.
-Remove declarations from the body of the macro definition
-by side-effects."
- (let ((tail (nthcdr 2 form))
- (res '()))
- (when (stringp (car (cdr tail)))
- (setq tail (cdr tail)))
- (while (and (consp (car (cdr tail)))
- (eq (car (car (cdr tail))) 'declare))
- (let ((declaration (car (cdr tail))))
- (setcdr tail (cdr (cdr tail)))
- (push `(if macro-declaration-function
- (funcall macro-declaration-function
- ',(car (cdr form)) ',declaration))
- res)))
- res))
-
-(defun byte-compile-file-form-defmumble (form macrop)
- (let* ((name (car (cdr form)))
- (this-kind (if macrop 'byte-compile-macro-environment
- 'byte-compile-function-environment))
- (that-kind (if macrop 'byte-compile-function-environment
- 'byte-compile-macro-environment))
- (this-one (assq name (symbol-value this-kind)))
- (that-one (assq name (symbol-value that-kind)))
- (byte-compile-free-references nil)
- (byte-compile-free-assignments nil))
+(defun byte-compile-file-form-defmumble (name macro arglist body rest)
+ "Process a `defalias' for NAME.
+If MACRO is non-nil, the definition is known to be a macro.
+ARGLIST is the list of arguments, if it was recognized or t otherwise.
+BODY of the definition, or t if not recognized.
+Return non-nil if everything went as planned, or nil to imply that it decided
+not to take responsibility for the actual compilation of the code."
+ (let* ((this-kind (if macro 'byte-compile-macro-environment
+ 'byte-compile-function-environment))
+ (that-kind (if macro 'byte-compile-function-environment
+ 'byte-compile-macro-environment))
+ (this-one (assq name (symbol-value this-kind)))
+ (that-one (assq name (symbol-value that-kind)))
+ (byte-compile-current-form name)) ; For warnings.
+
(byte-compile-set-symbol-position name)
;; When a function or macro is defined, add it to the call tree so that
;; we can tell when functions are not used.
(if byte-compile-generate-call-tree
- (or (assq name byte-compile-call-tree)
- (setq byte-compile-call-tree
- (cons (list name nil nil) byte-compile-call-tree))))
+ (or (assq name byte-compile-call-tree)
+ (setq byte-compile-call-tree
+ (cons (list name nil nil) byte-compile-call-tree))))
- (setq byte-compile-current-form name) ; for warnings
(if (byte-compile-warning-enabled-p 'redefine)
- (byte-compile-arglist-warn form macrop))
+ (byte-compile-arglist-warn name arglist macro))
+
(if byte-compile-verbose
- (message "Compiling %s... (%s)"
- (or byte-compile-current-file "") (nth 1 form)))
- (cond (that-one
- (if (and (byte-compile-warning-enabled-p 'redefine)
- ;; don't warn when compiling the stubs in byte-run...
- (not (assq (nth 1 form)
- byte-compile-initial-macro-environment)))
- (byte-compile-warn
+ (message "Compiling %s... (%s)"
+ (or byte-compile-current-file "") name))
+ (cond ((not (or macro (listp body)))
+ ;; We do not know positively if the definition is a macro
+ ;; or a function, so we shouldn't emit warnings.
+ ;; This also silences "multiple definition" warnings for defmethods.
+ nil)
+ (that-one
+ (if (and (byte-compile-warning-enabled-p 'redefine)
+ ;; Don't warn when compiling the stubs in byte-run...
+ (not (assq name byte-compile-initial-macro-environment)))
+ (byte-compile-warn
"`%s' defined multiple times, as both function and macro"
- (nth 1 form)))
- (setcdr that-one nil))
- (this-one
- (when (and (byte-compile-warning-enabled-p 'redefine)
- ;; hack: don't warn when compiling the magic internal
+ name))
+ (setcdr that-one nil))
+ (this-one
+ (when (and (byte-compile-warning-enabled-p 'redefine)
+ ;; Hack: Don't warn when compiling the magic internal
;; byte-compiler macros in byte-run.el...
- (not (assq (nth 1 form)
- byte-compile-initial-macro-environment)))
- (byte-compile-warn "%s `%s' defined multiple times in this file"
- (if macrop "macro" "function")
- (nth 1 form))))
- ((and (fboundp name)
- (eq (car-safe (symbol-function name))
- (if macrop 'lambda 'macro)))
- (when (byte-compile-warning-enabled-p 'redefine)
- (byte-compile-warn "%s `%s' being redefined as a %s"
- (if macrop "function" "macro")
- (nth 1 form)
- (if macrop "macro" "function")))
- ;; shadow existing definition
- (set this-kind
- (cons (cons name nil)
- (symbol-value this-kind))))
- )
- (let ((body (nthcdr 3 form)))
- (when (and (stringp (car body))
- (symbolp (car-safe (cdr-safe body)))
- (car-safe (cdr-safe body))
- (stringp (car-safe (cdr-safe (cdr-safe body)))))
- (byte-compile-set-symbol-position (nth 1 form))
- (byte-compile-warn "probable `\"' without `\\' in doc string of %s"
- (nth 1 form))))
-
- ;; Generate code for declarations in macro definitions.
- ;; Remove declarations from the body of the macro definition.
- (when macrop
- (dolist (decl (byte-compile-defmacro-declaration form))
- (prin1 decl byte-compile--outbuffer)))
-
- (let* ((code (byte-compile-lambda (nthcdr 2 form) t)))
- (if this-one
- ;; A definition in b-c-initial-m-e should always take precedence
- ;; during compilation, so don't let it be redefined. (Bug#8647)
- (or (and macrop
- (assq name byte-compile-initial-macro-environment))
- (setcdr this-one code))
- (set this-kind
- (cons (cons name code)
- (symbol-value this-kind))))
- (byte-compile-flush-pending)
- (if (not (stringp (nth 3 form)))
- ;; No doc string. Provide -1 as the "doc string index"
- ;; so that no element will be treated as a doc string.
- (byte-compile-output-docform
- "\n(defalias '"
- name
- (if macrop '(" '(macro . #[" -1 "])") '(" #[" -1 "]"))
- (append code nil) ; Turn byte-code-function-p into list.
- (and (atom code) byte-compile-dynamic
- 1)
- nil)
- ;; Output the form by hand, that's much simpler than having
- ;; b-c-output-file-form analyze the defalias.
- (byte-compile-output-docform
- "\n(defalias '"
- name
- (if macrop '(" '(macro . #[" 4 "])") '(" #[" 4 "]"))
- (append code nil) ; Turn byte-code-function-p into list.
- (and (atom code) byte-compile-dynamic
- 1)
- nil))
- (princ ")" byte-compile--outbuffer)
- nil)))
+ (not (assq name byte-compile-initial-macro-environment)))
+ (byte-compile-warn "%s `%s' defined multiple times in this file"
+ (if macro "macro" "function")
+ name)))
+ ((and (fboundp name)
+ (eq (car-safe (symbol-function name))
+ (if macro 'lambda 'macro)))
+ (when (byte-compile-warning-enabled-p 'redefine)
+ (byte-compile-warn "%s `%s' being redefined as a %s"
+ (if macro "function" "macro")
+ name
+ (if macro "macro" "function")))
+ ;; Shadow existing definition.
+ (set this-kind
+ (cons (cons name nil)
+ (symbol-value this-kind))))
+ )
+
+ (when (and (listp body)
+ (stringp (car body))
+ (symbolp (car-safe (cdr-safe body)))
+ (car-safe (cdr-safe body))
+ (stringp (car-safe (cdr-safe (cdr-safe body)))))
+ ;; FIXME: We've done that already just above, so this looks wrong!
+ ;;(byte-compile-set-symbol-position name)
+ (byte-compile-warn "probable `\"' without `\\' in doc string of %s"
+ name))
+
+ (if (not (listp body))
+ ;; The precise definition requires evaluation to find out, so it
+ ;; will only be known at runtime.
+ ;; For a macro, that means we can't use that macro in the same file.
+ (progn
+ (unless macro
+ (push (cons name (if (listp arglist) `(declared ,arglist) t))
+ byte-compile-function-environment))
+ ;; Tell the caller that we didn't compile it yet.
+ nil)
+
+ (let* ((code (byte-compile-lambda (cons arglist body) t)))
+ (if this-one
+ ;; A definition in b-c-initial-m-e should always take precedence
+ ;; during compilation, so don't let it be redefined. (Bug#8647)
+ (or (and macro
+ (assq name byte-compile-initial-macro-environment))
+ (setcdr this-one code))
+ (set this-kind
+ (cons (cons name code)
+ (symbol-value this-kind))))
+
+ (if rest
+ ;; There are additional args to `defalias' (like maybe a docstring)
+ ;; that the code below can't handle: punt!
+ nil
+ ;; Otherwise, we have a bona-fide defun/defmacro definition, and use
+ ;; special code to allow dynamic docstrings and byte-code.
+ (byte-compile-flush-pending)
+ (let ((index
+ ;; If there's no doc string, provide -1 as the "doc string
+ ;; index" so that no element will be treated as a doc string.
+ (if (not (stringp (car body))) -1 4)))
+ ;; Output the form by hand, that's much simpler than having
+ ;; b-c-output-file-form analyze the defalias.
+ (byte-compile-output-docform
+ "\n(defalias '"
+ name
+ (if macro `(" '(macro . #[" ,index "])") `(" #[" ,index "]"))
+ (append code nil) ; Turn byte-code-function-p into list.
+ (and (atom code) byte-compile-dynamic
+ 1)
+ nil))
+ (princ ")" byte-compile--outbuffer)
+ t)))))
-;; Print Lisp object EXP in the output file, inside a comment,
-;; and return the file position it will have.
-;; If QUOTED is non-nil, print with quoting; otherwise, print without quoting.
(defun byte-compile-output-as-comment (exp quoted)
- (let ((position (point)))
- (with-current-buffer byte-compile--outbuffer
+ "Print Lisp object EXP in the output file, inside a comment,
+and return the file (byte) position it will have.
+If QUOTED is non-nil, print with quoting; otherwise, print without quoting."
+ (with-current-buffer byte-compile--outbuffer
+ (let ((position (point)))
;; Insert EXP, and make it a comment with #@LENGTH.
(insert " ")
(position-bytes position))))
;; Save the file position of the object.
- ;; Note we should add 1 to skip the space
- ;; that we inserted before the actual doc string,
- ;; and subtract 1 to convert from an 1-origin Emacs position
- ;; to a file position; they cancel.
- (setq position (point))
- (goto-char (point-max)))
- position))
-
-
+ ;; Note we add 1 to skip the space that we inserted before the actual doc
+ ;; string, and subtract point-min to convert from an 1-origin Emacs
+ ;; position to a file position.
+ (prog1
+ (- (position-bytes (point)) (point-min) -1)
+ (goto-char (point-max))))))
+
+(defun byte-compile--reify-function (fun)
+ "Return an expression which will evaluate to a function value FUN.
+FUN should be either a `lambda' value or a `closure' value."
+ (pcase-let* (((or (and `(lambda ,args . ,body) (let env nil))
+ `(closure ,env ,args . ,body)) fun)
+ (renv ()))
+ ;; Turn the function's closed vars (if any) into local let bindings.
+ (dolist (binding env)
+ (cond
+ ((consp binding)
+ ;; We check shadowing by the args, so that the `let' can be moved
+ ;; within the lambda, which can then be unfolded. FIXME: Some of those
+ ;; bindings might be unused in `body'.
+ (unless (memq (car binding) args) ;Shadowed.
+ (push `(,(car binding) ',(cdr binding)) renv)))
+ ((eq binding t))
+ (t (push `(defvar ,binding) body))))
+ (if (null renv)
+ `(lambda ,args ,@body)
+ `(lambda ,args (let ,(nreverse renv) ,@body)))))
\f
;;;###autoload
(defun byte-compile (form)
If FORM is a lambda or a macro, byte-compile it as a function."
(displaying-byte-compile-warnings
(byte-compile-close-variables
- (let* ((fun (if (symbolp form)
+ (let* ((lexical-binding lexical-binding)
+ (fun (if (symbolp form)
(and (fboundp form) (symbol-function form))
form))
(macro (eq (car-safe fun) 'macro)))
(if macro
(setq fun (cdr fun)))
- (cond ((eq (car-safe fun) 'lambda)
- ;; Expand macros.
- (setq fun (byte-compile-preprocess fun))
- ;; Get rid of the `function' quote added by the `lambda' macro.
- (if (eq (car-safe fun) 'function) (setq fun (cadr fun)))
- (setq fun (if macro
- (cons 'macro (byte-compile-lambda fun))
- (byte-compile-lambda fun)))
- (if (symbolp form)
- (defalias form fun)
- fun)))))))
+ (cond
+ ;; Up until Emacs-24.1, byte-compile silently did nothing when asked to
+ ;; compile something invalid. So let's tune down the complaint from an
+ ;; error to a simple message for the known case where signaling an error
+ ;; causes problems.
+ ((byte-code-function-p fun)
+ (message "Function %s is already compiled"
+ (if (symbolp form) form "provided"))
+ fun)
+ (t
+ (when (symbolp form)
+ (unless (memq (car-safe fun) '(closure lambda))
+ (error "Don't know how to compile %S" fun))
+ (setq lexical-binding (eq (car fun) 'closure))
+ (setq fun (byte-compile--reify-function fun)))
+ (unless (eq (car-safe fun) 'lambda)
+ (error "Don't know how to compile %S" fun))
+ ;; Expand macros.
+ (setq fun (byte-compile-preprocess fun))
+ ;; Get rid of the `function' quote added by the `lambda' macro.
+ (if (eq (car-safe fun) 'function) (setq fun (cadr fun)))
+ (setq fun (byte-compile-lambda fun))
+ (if macro (push 'macro fun))
+ (if (symbolp form)
+ (fset form fun)
+ fun)))))))
(defun byte-compile-sexp (sexp)
"Compile and return SEXP."
(when (symbolp arg)
(byte-compile-set-symbol-position arg))
(cond ((or (not (symbolp arg))
- (byte-compile-const-symbol-p arg t))
+ (macroexp--const-symbol-p arg t))
(error "Invalid lambda variable %s" arg))
((eq arg '&rest)
(unless (cdr list)
(lsh nonrest 8)
(lsh rest 7)))))
-;; Byte-compile a lambda-expression and return a valid function.
-;; The value is usually a compiled function but may be the original
-;; lambda-expression.
-;; When ADD-LAMBDA is non-nil, the symbol `lambda' is added as head
-;; of the list FUN and `byte-compile-set-symbol-position' is not called.
-;; Use this feature to avoid calling `byte-compile-set-symbol-position'
-;; for symbols generated by the byte compiler itself.
+
(defun byte-compile-lambda (fun &optional add-lambda reserved-csts)
+ "Byte-compile a lambda-expression and return a valid function.
+The value is usually a compiled function but may be the original
+lambda-expression.
+When ADD-LAMBDA is non-nil, the symbol `lambda' is added as head
+of the list FUN and `byte-compile-set-symbol-position' is not called.
+Use this feature to avoid calling `byte-compile-set-symbol-position'
+for symbols generated by the byte compiler itself."
(if add-lambda
(setq fun (cons 'lambda fun))
(unless (eq 'lambda (car-safe fun))
(setq form (cdr form)))
(setq form (car form)))
(if (and (eq (car-safe form) 'list)
- ;; The spec is evaled in callint.c in dynamic-scoping
+ ;; The spec is evalled in callint.c in dynamic-scoping
;; mode, so just leaving the form unchanged would mean
;; it won't be eval'd in the right mode.
(not lexical-binding))
(byte-compile-make-lambda-lexenv fun))
reserved-csts)))
;; Build the actual byte-coded function.
- (if (eq 'byte-code (car-safe compiled))
- (apply 'make-byte-code
- (if lexical-binding
- (byte-compile-make-args-desc arglist)
- arglist)
- (append
- ;; byte-string, constants-vector, stack depth
- (cdr compiled)
- ;; optionally, the doc string.
- (cond (lexical-binding
- (require 'help-fns)
- (list (help-add-fundoc-usage doc arglist)))
- ((or doc int)
- (list doc)))
- ;; optionally, the interactive spec.
- (if int
- (list (nth 1 int)))))
- (error "byte-compile-top-level did not return byte-code")))))
+ (cl-assert (eq 'byte-code (car-safe compiled)))
+ (apply #'make-byte-code
+ (if lexical-binding
+ (byte-compile-make-args-desc arglist)
+ arglist)
+ (append
+ ;; byte-string, constants-vector, stack depth
+ (cdr compiled)
+ ;; optionally, the doc string.
+ (cond (lexical-binding
+ (require 'help-fns)
+ (list (help-add-fundoc-usage doc arglist)))
+ ((or doc int)
+ (list doc)))
+ ;; optionally, the interactive spec.
+ (if int
+ (list (nth 1 int))))))))
(defvar byte-compile-reserved-constants 0)
(limits '(5 ; Use the 1-byte varref codes,
63 ; 1-constlim ; 1-byte byte-constant codes,
255 ; 2-byte varref codes,
- 65535)) ; 3-byte codes for the rest.
+ 65535 ; 3-byte codes for the rest.
+ 65535)) ; twice since we step when we swap.
limit)
(while (or rest other)
(setq limit (car limits))
(while (and rest (< i limit))
(cond
((numberp (car rest))
- (assert (< (car rest) byte-compile-reserved-constants)))
+ (cl-assert (< (car rest) byte-compile-reserved-constants)))
((setq tmp (assq (car (car rest)) ret))
(setcdr (car rest) (cdr tmp)))
(t
(setcdr (car rest) (setq i (1+ i)))
(setq ret (cons (car rest) ret))))
(setq rest (cdr rest)))
- (setq limits (cdr limits)
- rest (prog1 other
+ (setq limits (cdr limits) ;Step
+ rest (prog1 other ;&Swap.
(setq other rest))))
(apply 'vector (nreverse (mapcar 'car ret)))))
(if (if (eq (car (car rest)) 'byte-constant)
(or (consp tmp)
(and (symbolp tmp)
- (not (byte-compile-const-symbol-p tmp)))))
+ (not (macroexp--const-symbol-p tmp)))))
(if maycall
(setq body (cons (list 'quote tmp) body)))
(setq body (cons tmp body))))
(setq body (nreverse body))
(setq body (list
(if (and (eq tmp 'funcall)
- (eq (car-safe (car body)) 'quote))
+ (eq (car-safe (car body)) 'quote)
+ (symbolp (nth 1 (car body))))
(cons (nth 1 (car body)) (cdr body))
(cons tmp body))))
(or (eq output-type 'file)
(push (cons fn
(if (and (consp args) (listp (car args)))
(list 'declared (car args))
- t)) ; arglist not specified
+ t)) ; Arglist not specified.
byte-compile-function-environment)
;; We are stating that it _will_ be defined at runtime.
(setq byte-compile-noruntime-functions
(let ((byte-compile--for-effect for-effect))
(cond
((not (consp form))
- (cond ((or (not (symbolp form)) (byte-compile-const-symbol-p form))
+ (cond ((or (not (symbolp form)) (macroexp--const-symbol-p form))
(when (symbolp form)
(byte-compile-set-symbol-position form))
(byte-compile-constant form))
((symbolp (car form))
(let* ((fn (car form))
(handler (get fn 'byte-compile)))
- (when (byte-compile-const-symbol-p fn)
+ (when (macroexp--const-symbol-p fn)
(byte-compile-warn "`%s' called as a function" fn))
(and (byte-compile-warning-enabled-p 'interactive-only)
(memq fn byte-compile-interactive-only-functions)
(byte-compile-log-warning
(format "Forgot to expand macro %s" (car form)) nil :error))
(if (and handler
- ;; Make sure that function exists. This is important
- ;; for CL compiler macros since the symbol may be
- ;; `cl-byte-compile-compiler-macro' but if CL isn't
- ;; loaded, this function doesn't exist.
- (and (not (eq handler
- ;; Already handled by macroexpand-all.
- 'cl-byte-compile-compiler-macro))
- (functionp handler)))
+ ;; Make sure that function exists.
+ (and (functionp handler)
+ ;; Ignore obsolete byte-compile function used by former
+ ;; CL code to handle compiler macros (we do it
+ ;; differently now).
+ (not (eq handler 'cl-byte-compile-compiler-macro))))
(funcall handler form)
(byte-compile-normal-call form))
(if (byte-compile-warning-enabled-p 'cl-functions)
(mapc 'byte-compile-form (cdr form))
(unless fmax2
;; Old-style byte-code.
- (assert (listp fargs))
+ (cl-assert (listp fargs))
(while fargs
- (case (car fargs)
- (&optional (setq fargs (cdr fargs)))
- (&rest (setq fmax2 (+ (* 2 (length dynbinds)) 1))
+ (pcase (car fargs)
+ (`&optional (setq fargs (cdr fargs)))
+ (`&rest (setq fmax2 (+ (* 2 (length dynbinds)) 1))
(push (cadr fargs) dynbinds)
(setq fargs nil))
- (t (push (pop fargs) dynbinds))))
+ (_ (push (pop fargs) dynbinds))))
(unless fmax2 (setq fmax2 (* 2 (length dynbinds)))))
(cond
((<= (+ alen alen) fmax2)
(t
;; Turn &rest args into a list.
(let ((n (- alen (/ (1- fmax2) 2))))
- (assert (> n 0) nil "problem: fmax2=%S alen=%S n=%S" fmax2 alen n)
+ (cl-assert (> n 0) nil "problem: fmax2=%S alen=%S n=%S" fmax2 alen n)
(if (< n 5)
(byte-compile-out
(aref [byte-list1 byte-list2 byte-list3 byte-list4] (1- n))
;; Unbind dynamic variables.
(when dynbinds
(byte-compile-out 'byte-unbind (length dynbinds)))
- (assert (eq byte-compile-depth (1+ start-depth))
+ (cl-assert (eq byte-compile-depth (1+ start-depth))
nil "Wrong depth start=%s end=%s" start-depth byte-compile-depth)))
(defun byte-compile-check-variable (var access-type)
"Do various error checks before a use of the variable VAR."
(when (symbolp var)
(byte-compile-set-symbol-position var))
- (cond ((or (not (symbolp var)) (byte-compile-const-symbol-p var))
+ (cond ((or (not (symbolp var)) (macroexp--const-symbol-p var))
(when (byte-compile-warning-enabled-p 'constants)
(byte-compile-warn (if (eq access-type 'let-bind)
"attempt to let-bind %s `%s`"
((let ((od (get var 'byte-obsolete-variable)))
(and od
(not (memq var byte-compile-not-obsolete-vars))
- (or (case (nth 1 od)
- (set (not (eq access-type 'reference)))
- (get (eq access-type 'reference))
- (t t)))))
+ (not (memq var byte-compile-global-not-obsolete-vars))
+ (or (pcase (nth 1 od)
+ (`set (not (eq access-type 'reference)))
+ (`get (eq access-type 'reference))
+ (_ t)))))
(byte-compile-warn-obsolete var))))
(defsubst byte-compile-dynamic-variable-op (base-op var)
(byte-compile-check-variable var 'assign)
(let ((lex-binding (assq var byte-compile--lexical-environment)))
(if lex-binding
- ;; VAR is lexically bound
+ ;; VAR is lexically bound.
(byte-compile-stack-set (cdr lex-binding))
- ;; VAR is dynamically bound
+ ;; VAR is dynamically bound.
(unless (or (not (byte-compile-warning-enabled-p 'free-vars))
(boundp var)
(memq var byte-compile-bound-variables)
(body (nthcdr 3 form))
(fun
(byte-compile-lambda `(lambda ,vars . ,body) nil (length env))))
- (assert (byte-code-function-p fun))
+ (cl-assert (> (length env) 0)) ;Otherwise, we don't need a closure.
+ (cl-assert (byte-code-function-p fun))
(byte-compile-form `(make-byte-code
',(aref fun 0) ',(aref fun 1)
(vconcat (vector . ,env) ',(aref fun 2))
(defun byte-compile-setq-default (form)
(setq form (cdr form))
- (if (> (length form) 2)
- (let ((setters ()))
- (while (consp form)
- (push `(setq-default ,(pop form) ,(pop form)) setters))
- (byte-compile-form (cons 'progn (nreverse setters))))
- (let ((var (car form)))
- (and (or (not (symbolp var))
- (byte-compile-const-symbol-p var t))
- (byte-compile-warning-enabled-p 'constants)
- (byte-compile-warn
- "variable assignment to %s `%s'"
- (if (symbolp var) "constant" "nonvariable")
- (prin1-to-string var)))
- (byte-compile-normal-call `(set-default ',var ,@(cdr form))))))
+ (if (null form) ; (setq-default), with no arguments
+ (byte-compile-form nil byte-compile--for-effect)
+ (if (> (length form) 2)
+ (let ((setters ()))
+ (while (consp form)
+ (push `(setq-default ,(pop form) ,(pop form)) setters))
+ (byte-compile-form (cons 'progn (nreverse setters))))
+ (let ((var (car form)))
+ (and (or (not (symbolp var))
+ (macroexp--const-symbol-p var t))
+ (byte-compile-warning-enabled-p 'constants)
+ (byte-compile-warn
+ "variable assignment to %s `%s'"
+ (if (symbolp var) "constant" "nonvariable")
+ (prin1-to-string var)))
+ (byte-compile-normal-call `(set-default ',var ,@(cdr form)))))))
(byte-defop-compiler-1 set-default)
(defun byte-compile-set-default (form)
that suppresses all warnings during execution of BODY."
(declare (indent 1) (debug t))
`(let* ((fbound-list (byte-compile-find-bound-condition
- ,condition (list 'fboundp)
+ ,condition '(fboundp functionp)
byte-compile-unresolved-functions))
(bound-list (byte-compile-find-bound-condition
- ,condition (list 'boundp 'default-boundp)))
+ ,condition '(boundp default-boundp)))
;; Maybe add to the bound list.
(byte-compile-bound-variables
(append bound-list byte-compile-bound-variables)))
(defun byte-compile-if (form)
(byte-compile-form (car (cdr form)))
;; Check whether we have `(if (fboundp ...' or `(if (boundp ...'
- ;; and avoid warnings about the relevent symbols in the consequent.
+ ;; and avoid warnings about the relevant symbols in the consequent.
(let ((clause (nth 1 form))
(donetag (byte-compile-make-tag)))
(if (null (nthcdr 3 form))
(if lexical-binding
;; Unbind both lexical and dynamic variables.
(progn
- (assert (or (eq byte-compile-depth init-stack-depth)
- (eq byte-compile-depth (1+ init-stack-depth))))
+ (cl-assert (or (eq byte-compile-depth init-stack-depth)
+ (eq byte-compile-depth (1+ init-stack-depth))))
(byte-compile-unbind clauses init-lexenv (> byte-compile-depth
init-stack-depth)))
;; Unbind dynamic variables.
\f
;;; top-level forms elsewhere
-(byte-defop-compiler-1 defun)
-(byte-defop-compiler-1 defmacro)
(byte-defop-compiler-1 defvar)
(byte-defop-compiler-1 defconst byte-compile-defvar)
(byte-defop-compiler-1 autoload)
(byte-defop-compiler-1 lambda byte-compile-lambda-form)
-(defun byte-compile-defun (form)
- ;; This is not used for file-level defuns with doc strings.
- (if (symbolp (car form))
- (byte-compile-set-symbol-position (car form))
- (byte-compile-set-symbol-position 'defun)
- (error "defun name must be a symbol, not %s" (car form)))
- (byte-compile-push-constant 'defalias)
- (byte-compile-push-constant (nth 1 form))
- (byte-compile-push-constant (byte-compile-lambda (cdr (cdr form)) t))
- (byte-compile-out 'byte-call 2))
-
-(defun byte-compile-defmacro (form)
- ;; This is not used for file-level defmacros with doc strings.
- (byte-compile-body-do-effect
- (let ((decls (byte-compile-defmacro-declaration form))
- (code (byte-compile-lambda (cdr (cdr form)) t)))
- `((defalias ',(nth 1 form)
- ,(if (eq (car-safe code) 'make-byte-code)
- `(cons 'macro ,code)
- `'(macro . ,(eval code))))
- ,@decls
- ',(nth 1 form)))))
-
;; If foo.el declares `toto' as obsolete, it is likely that foo.el will
;; actually use `toto' in order for this obsolete variable to still work
;; correctly, so paradoxically, while byte-compiling foo.el, the presence
(byte-defop-compiler-1 make-obsolete-variable)
(defun byte-compile-make-obsolete-variable (form)
(when (eq 'quote (car-safe (nth 1 form)))
- (push (nth 1 (nth 1 form)) byte-compile-not-obsolete-vars))
+ (push (nth 1 (nth 1 form)) byte-compile-global-not-obsolete-vars))
(byte-compile-normal-call form))
+(defconst byte-compile-tmp-var (make-symbol "def-tmp-var"))
+
(defun byte-compile-defvar (form)
- ;; This is not used for file-level defvar/consts with doc strings.
+ ;; This is not used for file-level defvar/consts.
(when (and (symbolp (nth 1 form))
(not (string-match "[-*/:$]" (symbol-name (nth 1 form))))
(byte-compile-warning-enabled-p 'lexical))
(push var byte-compile-bound-variables)
(if (eq fun 'defconst)
(push var byte-compile-const-variables))
- (byte-compile-body-do-effect
- (list
- ;; Put the defined variable in this library's load-history entry
- ;; just as a real defvar would, but only in top-level forms.
- (when (and (cddr form) (null byte-compile-current-form))
- `(setq current-load-list (cons ',var current-load-list)))
- (when (> (length form) 3)
- (when (and string (not (stringp string)))
- (byte-compile-warn "third arg to `%s %s' is not a string: %s"
- fun var string))
- `(put ',var 'variable-documentation ,string))
- (if (cddr form) ; `value' provided
- (let ((byte-compile-not-obsolete-vars (list var)))
- (if (eq fun 'defconst)
- ;; `defconst' sets `var' unconditionally.
- (let ((tmp (make-symbol "defconst-tmp-var")))
- ;; Quote with `quote' to prevent byte-compiling the body,
- ;; which would lead to an inf-loop.
- `(funcall '(lambda (,tmp) (defconst ,var ,tmp))
- ,value))
- ;; `defvar' sets `var' only when unbound.
- `(if (not (default-boundp ',var)) (setq-default ,var ,value))))
- (when (eq fun 'defconst)
- ;; This will signal an appropriate error at runtime.
- `(eval ',form)))
- `',var))))
+ (when (and string (not (stringp string)))
+ (byte-compile-warn "third arg to `%s %s' is not a string: %s"
+ fun var string))
+ (byte-compile-form-do-effect
+ (if (cddr form) ; `value' provided
+ ;; Quote with `quote' to prevent byte-compiling the body,
+ ;; which would lead to an inf-loop.
+ `(funcall '(lambda (,byte-compile-tmp-var)
+ (,fun ,var ,byte-compile-tmp-var ,@(nthcdr 3 form)))
+ ,value)
+ (if (eq fun 'defconst)
+ ;; This will signal an appropriate error at runtime.
+ `(eval ',form)
+ ;; A simple (defvar foo) just returns foo.
+ `',var)))))
(defun byte-compile-autoload (form)
(byte-compile-set-symbol-position 'autoload)
- (and (byte-compile-constp (nth 1 form))
- (byte-compile-constp (nth 5 form))
+ (and (macroexp-const-p (nth 1 form))
+ (macroexp-const-p (nth 5 form))
(eval (nth 5 form)) ; macro-p
(not (fboundp (eval (nth 1 form))))
(byte-compile-warn
(put 'defalias 'byte-hunk-handler 'byte-compile-file-form-defalias)
;; Used for eieio--defalias as well.
(defun byte-compile-file-form-defalias (form)
- (if (and (consp (cdr form)) (consp (nth 1 form))
- (eq (car (nth 1 form)) 'quote)
- (consp (cdr (nth 1 form)))
- (symbolp (nth 1 (nth 1 form))))
- (let ((constant
- (and (consp (nthcdr 2 form))
- (consp (nth 2 form))
- (eq (car (nth 2 form)) 'quote)
- (consp (cdr (nth 2 form)))
- (symbolp (nth 1 (nth 2 form))))))
- (byte-compile-defalias-warn (nth 1 (nth 1 form)))
- (push (cons (nth 1 (nth 1 form))
- (if constant (nth 1 (nth 2 form)) t))
- byte-compile-function-environment)))
- ;; We used to just do: (byte-compile-normal-call form)
- ;; But it turns out that this fails to optimize the code.
- ;; So instead we now do the same as what other byte-hunk-handlers do,
- ;; which is to call back byte-compile-file-form and then return nil.
- ;; Except that we can't just call byte-compile-file-form since it would
- ;; call us right back.
- (byte-compile-keep-pending form)
- ;; Return nil so the form is not output twice.
- nil)
-
-;; Turn off warnings about prior calls to the function being defalias'd.
-;; This could be smarter and compare those calls with
-;; the function it is being aliased to.
-(defun byte-compile-defalias-warn (new)
- (let ((calls (assq new byte-compile-unresolved-functions)))
- (if calls
- (setq byte-compile-unresolved-functions
- (delq calls byte-compile-unresolved-functions)))))
+ ;; For the compilation itself, we could largely get rid of this hunk-handler,
+ ;; if it weren't for the fact that we need to figure out when a defalias
+ ;; defines a macro, so as to add it to byte-compile-macro-environment.
+ ;;
+ ;; FIXME: we also use this hunk-handler to implement the function's dynamic
+ ;; docstring feature. We could actually implement it more elegantly in
+ ;; byte-compile-lambda so it applies to all lambdas, but the problem is that
+ ;; the resulting .elc format will not be recognized by make-docfile, so
+ ;; either we stop using DOC for the docstrings of preloaded elc files (at the
+ ;; cost of around 24KB on 32bit hosts, double on 64bit hosts) or we need to
+ ;; build DOC in a more clever way (e.g. handle anonymous elements).
+ (let ((byte-compile-free-references nil)
+ (byte-compile-free-assignments nil))
+ (pcase form
+ ;; Decompose `form' into:
+ ;; - `name' is the name of the defined function.
+ ;; - `arg' is the expression to which it is defined.
+ ;; - `rest' is the rest of the arguments.
+ (`(,_ ',name ,arg . ,rest)
+ (pcase-let*
+ ;; `macro' is non-nil if it defines a macro.
+ ;; `fun' is the function part of `arg' (defaults to `arg').
+ (((or (and (or `(cons 'macro ,fun) `'(macro . ,fun)) (let macro t))
+ (and (let fun arg) (let macro nil)))
+ arg)
+ ;; `lam' is the lambda expression in `fun' (or nil if not
+ ;; recognized).
+ ((or `(,(or `quote `function) ,lam) (let lam nil))
+ fun)
+ ;; `arglist' is the list of arguments (or t if not recognized).
+ ;; `body' is the body of `lam' (or t if not recognized).
+ ((or `(lambda ,arglist . ,body)
+ ;; `(closure ,_ ,arglist . ,body)
+ (and `(internal-make-closure ,arglist . ,_) (let body t))
+ (and (let arglist t) (let body t)))
+ lam))
+ (unless (byte-compile-file-form-defmumble
+ name macro arglist body rest)
+ (byte-compile-keep-pending form))))
+
+ ;; We used to just do: (byte-compile-normal-call form)
+ ;; But it turns out that this fails to optimize the code.
+ ;; So instead we now do the same as what other byte-hunk-handlers do,
+ ;; which is to call back byte-compile-file-form and then return nil.
+ ;; Except that we can't just call byte-compile-file-form since it would
+ ;; call us right back.
+ (t (byte-compile-keep-pending form)))))
(byte-defop-compiler-1 with-no-warnings byte-compile-no-warnings)
(defun byte-compile-no-warnings (form)
(defun byte-compile-form-make-variable-buffer-local (form)
(byte-compile-keep-pending form 'byte-compile-normal-call))
+(byte-defop-compiler-1 add-to-list byte-compile-add-to-list)
+(defun byte-compile-add-to-list (form)
+ ;; FIXME: This could be used for `set' as well, except that it's got
+ ;; its own opcode, so the final `byte-compile-normal-call' needs to
+ ;; be replaced with something else.
+ (pcase form
+ (`(,fun ',var . ,_)
+ (byte-compile-check-variable var 'assign)
+ (if (assq var byte-compile--lexical-environment)
+ (byte-compile-log-warning
+ (format "%s cannot use lexical var `%s'" fun var)
+ nil :error)
+ (unless (or (not (byte-compile-warning-enabled-p 'free-vars))
+ (boundp var)
+ (memq var byte-compile-bound-variables)
+ (memq var byte-compile-free-references))
+ (byte-compile-warn "assignment to free variable `%S'" var)
+ (push var byte-compile-free-references)))))
+ (byte-compile-normal-call form))
\f
;;; tags
(if byte-compile-call-tree-sort
(setq byte-compile-call-tree
(sort byte-compile-call-tree
- (case byte-compile-call-tree-sort
- (callers
+ (pcase byte-compile-call-tree-sort
+ (`callers
(lambda (x y) (< (length (nth 1 x))
(length (nth 1 y)))))
- (calls
+ (`calls
(lambda (x y) (< (length (nth 2 x))
(length (nth 2 y)))))
- (calls+callers
+ (`calls+callers
(lambda (x y) (< (+ (length (nth 1 x))
(length (nth 2 x)))
(+ (length (nth 1 y))
(length (nth 2 y))))))
- (name
+ (`name
(lambda (x y) (string< (car x) (car y))))
- (t (error "`byte-compile-call-tree-sort': `%s' - unknown sort mode"
+ (_ (error "`byte-compile-call-tree-sort': `%s' - unknown sort mode"
byte-compile-call-tree-sort))))))
(message "Generating call tree...")
(let ((rest byte-compile-call-tree)
(kill-emacs (if error 1 0))))
(defun batch-byte-compile-file (file)
- (if debug-on-error
- (byte-compile-file file)
- (condition-case err
- (byte-compile-file file)
- (file-error
- (message (if (cdr err)
- ">>Error occurred processing %s: %s (%s)"
- ">>Error occurred processing %s: %s")
- file
- (get (car err) 'error-message)
- (prin1-to-string (cdr err)))
- (let ((destfile (byte-compile-dest-file file)))
- (if (file-exists-p destfile)
- (delete-file destfile)))
- nil)
- (error
- (message (if (cdr err)
- ">>Error occurred processing %s: %s (%s)"
- ">>Error occurred processing %s: %s")
- file
- (get (car err) 'error-message)
- (prin1-to-string (cdr err)))
- nil))))
+ (let ((byte-compile-root-dir (or byte-compile-root-dir default-directory)))
+ (if debug-on-error
+ (byte-compile-file file)
+ (condition-case err
+ (byte-compile-file file)
+ (file-error
+ (message (if (cdr err)
+ ">>Error occurred processing %s: %s (%s)"
+ ">>Error occurred processing %s: %s")
+ file
+ (get (car err) 'error-message)
+ (prin1-to-string (cdr err)))
+ (let ((destfile (byte-compile-dest-file file)))
+ (if (file-exists-p destfile)
+ (delete-file destfile)))
+ nil)
+ (error
+ (message (if (cdr err)
+ ">>Error occurred processing %s: %s (%s)"
+ ">>Error occurred processing %s: %s")
+ file
+ (get (car err) 'error-message)
+ (prin1-to-string (cdr err)))
+ nil)))))
(defun byte-compile-refresh-preloaded ()
"Reload any Lisp file that was changed since Emacs was dumped.
(setq command-line-args-left (cdr command-line-args-left)))
(kill-emacs 0))
+;;; Core compiler macros.
+
+(put 'featurep 'compiler-macro
+ (lambda (form feature &rest _ignore)
+ ;; Emacs-21's byte-code doesn't run under XEmacs or SXEmacs anyway, so
+ ;; we can safely optimize away this test.
+ (if (member feature '('xemacs 'sxemacs 'emacs))
+ (eval form)
+ form)))
+
(provide 'byte-compile)
(provide 'bytecomp)