1 ;;; bytecomp.el --- compilation of Lisp code into byte code -*- lexical-binding: t -*-
3 ;; Copyright (C) 1985-1987, 1992, 1994, 1998, 2000-2011
4 ;; Free Software Foundation, Inc.
6 ;; Author: Jamie Zawinski <jwz@lucid.com>
7 ;; Hallvard Furuseth <hbf@ulrik.uio.no>
12 ;; This file is part of GNU Emacs.
14 ;; GNU Emacs is free software: you can redistribute it and/or modify
15 ;; it under the terms of the GNU General Public License as published by
16 ;; the Free Software Foundation, either version 3 of the License, or
17 ;; (at your option) any later version.
19 ;; GNU Emacs is distributed in the hope that it will be useful,
20 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
21 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 ;; GNU General Public License for more details.
24 ;; You should have received a copy of the GNU General Public License
25 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
29 ;; The Emacs Lisp byte compiler. This crunches lisp source into a sort
30 ;; of p-code (`lapcode') which takes up less space and can be interpreted
31 ;; faster. [`LAP' == `Lisp Assembly Program'.]
32 ;; The user entry points are byte-compile-file and byte-recompile-directory.
36 ;; ========================================================================
38 ;; byte-recompile-directory, byte-compile-file,
39 ;; byte-recompile-file,
40 ;; batch-byte-compile, batch-byte-recompile-directory,
41 ;; byte-compile, compile-defun,
43 ;; (byte-compile-buffer and byte-compile-and-load-file were turned off
44 ;; because they are not terribly useful and get in the way of completion.)
46 ;; This version of the byte compiler has the following improvements:
47 ;; + optimization of compiled code:
48 ;; - removal of unreachable code;
49 ;; - removal of calls to side-effectless functions whose return-value
51 ;; - compile-time evaluation of safe constant forms, such as (consp nil)
53 ;; - open-coding of literal lambdas;
54 ;; - peephole optimization of emitted code;
55 ;; - trivial functions are left uncompiled for speed.
56 ;; + support for inline functions;
57 ;; + compile-time evaluation of arbitrary expressions;
58 ;; + compile-time warning messages for:
59 ;; - functions being redefined with incompatible arglists;
60 ;; - functions being redefined as macros, or vice-versa;
61 ;; - functions or macros defined multiple times in the same file;
62 ;; - functions being called with the incorrect number of arguments;
63 ;; - functions being called which are not defined globally, in the
64 ;; file, or as autoloads;
65 ;; - assignment and reference of undeclared free variables;
66 ;; - various syntax errors;
67 ;; + correct compilation of nested defuns, defmacros, defvars and defsubsts;
68 ;; + correct compilation of top-level uses of macros;
69 ;; + the ability to generate a histogram of functions called.
71 ;; User customization variables: M-x customize-group bytecomp
75 ;; o The form `defsubst' is just like `defun', except that the function
76 ;; generated will be open-coded in compiled code which uses it. This
77 ;; means that no function call will be generated, it will simply be
78 ;; spliced in. Lisp functions calls are very slow, so this can be a
81 ;; You can generally accomplish the same thing with `defmacro', but in
82 ;; that case, the defined procedure can't be used as an argument to
85 ;; o You can also open-code one particular call to a function without
86 ;; open-coding all calls. Use the 'inline' form to do this, like so:
88 ;; (inline (foo 1 2 3)) ;; `foo' will be open-coded
90 ;; (inline ;; `foo' and `baz' will be
91 ;; (foo 1 2 3 (bar 5)) ;; open-coded, but `bar' will not.
94 ;; o It is possible to open-code a function in the same file it is defined
95 ;; in without having to load that file before compiling it. The
96 ;; byte-compiler has been modified to remember function definitions in
97 ;; the compilation environment in the same way that it remembers macro
100 ;; o Forms like ((lambda ...) ...) are open-coded.
102 ;; o The form `eval-when-compile' is like progn, except that the body
103 ;; is evaluated at compile-time. When it appears at top-level, this
104 ;; is analogous to the Common Lisp idiom (eval-when (compile) ...).
105 ;; When it does not appear at top-level, it is similar to the
106 ;; Common Lisp #. reader macro (but not in interpreted code).
108 ;; o The form `eval-and-compile' is similar to eval-when-compile, but
109 ;; the whole form is evalled both at compile-time and at run-time.
111 ;; o The command compile-defun is analogous to eval-defun.
113 ;; o If you run byte-compile-file on a filename which is visited in a
114 ;; buffer, and that buffer is modified, you are asked whether you want
115 ;; to save the buffer before compiling.
117 ;; o byte-compiled files now start with the string `;ELC'.
118 ;; Some versions of `file' can be customized to recognize that.
123 (eval-when-compile (require 'cl
))
125 (or (fboundp 'defsubst
)
126 ;; This really ought to be loaded already!
129 ;; The feature of compiling in a specific target Emacs version
130 ;; has been turned off because compile time options are a bad idea.
131 (defmacro byte-compile-single-version
() nil
)
132 (defmacro byte-compile-version-cond
(cond) cond
)
135 (defgroup bytecomp nil
136 "Emacs Lisp byte-compiler."
139 (defcustom emacs-lisp-file-regexp
"\\.el\\'"
140 "Regexp which matches Emacs Lisp source files.
141 If you change this, you might want to set `byte-compile-dest-file-function'."
145 (defcustom byte-compile-dest-file-function nil
146 "Function for the function `byte-compile-dest-file' to call.
147 It should take one argument, the name of an Emacs Lisp source
148 file name, and return the name of the compiled file."
150 :type
'(choice (const nil
) function
)
153 ;; This enables file name handlers such as jka-compr
154 ;; to remove parts of the file name that should not be copied
155 ;; through to the output file name.
156 (defun byte-compiler-base-file-name (filename)
157 (let ((handler (find-file-name-handler filename
158 'byte-compiler-base-file-name
)))
160 (funcall handler
'byte-compiler-base-file-name filename
)
163 (or (fboundp 'byte-compile-dest-file
)
164 ;; The user may want to redefine this along with emacs-lisp-file-regexp,
165 ;; so only define it if it is undefined.
166 ;; Note - redefining this function is obsolete as of 23.2.
167 ;; Customize byte-compile-dest-file-function instead.
168 (defun byte-compile-dest-file (filename)
169 "Convert an Emacs Lisp source file name to a compiled file name.
170 If `byte-compile-dest-file-function' is non-nil, uses that
171 function to do the work. Otherwise, if FILENAME matches
172 `emacs-lisp-file-regexp' (by default, files with the extension `.el'),
173 adds `c' to it; otherwise adds `.elc'."
174 (if byte-compile-dest-file-function
175 (funcall byte-compile-dest-file-function filename
)
176 (setq filename
(file-name-sans-versions
177 (byte-compiler-base-file-name filename
)))
178 (cond ((string-match emacs-lisp-file-regexp filename
)
179 (concat (substring filename
0 (match-beginning 0)) ".elc"))
180 (t (concat filename
".elc"))))))
182 ;; This can be the 'byte-compile property of any symbol.
183 (autoload 'byte-compile-inline-expand
"byte-opt")
185 ;; This is the entrypoint to the lapcode optimizer pass1.
186 (autoload 'byte-optimize-form
"byte-opt")
187 ;; This is the entrypoint to the lapcode optimizer pass2.
188 (autoload 'byte-optimize-lapcode
"byte-opt")
189 (autoload 'byte-compile-unfold-lambda
"byte-opt")
191 ;; This is the entry point to the decompiler, which is used by the
192 ;; disassembler. The disassembler just requires 'byte-compile, but
193 ;; that doesn't define this function, so this seems to be a reasonable
195 (autoload 'byte-decompile-bytecode
"byte-opt")
197 (defcustom byte-compile-verbose
198 (and (not noninteractive
) (> baud-rate search-slow-speed
))
199 "Non-nil means print messages describing progress of byte-compiler."
203 (defcustom byte-optimize t
204 "Enable optimization in the byte compiler.
206 nil - no optimization
207 t - all optimizations
208 `source' - source-level optimizations only
209 `byte' - code-level optimizations only"
211 :type
'(choice (const :tag
"none" nil
)
213 (const :tag
"source-level" source
)
214 (const :tag
"byte-level" byte
)))
216 (defcustom byte-compile-delete-errors nil
217 "If non-nil, the optimizer may delete forms that may signal an error.
218 This includes variable references and calls to functions such as `car'."
222 (defvar byte-compile-dynamic nil
223 "If non-nil, compile function bodies so they load lazily.
224 They are hidden in comments in the compiled file,
225 and each one is brought into core when the
228 To enable this option, make it a file-local variable
229 in the source file you want it to apply to.
230 For example, add -*-byte-compile-dynamic: t;-*- on the first line.
232 When this option is true, if you load the compiled file and then move it,
233 the functions you loaded will not be able to run.")
234 ;;;###autoload(put 'byte-compile-dynamic 'safe-local-variable 'booleanp)
236 (defvar byte-compile-disable-print-circle nil
237 "If non-nil, disable `print-circle' on printing a byte-compiled code.")
238 (make-obsolete-variable 'byte-compile-disable-print-circle nil
"24.1")
239 ;;;###autoload(put 'byte-compile-disable-print-circle 'safe-local-variable 'booleanp)
241 (defcustom byte-compile-dynamic-docstrings t
242 "If non-nil, compile doc strings for lazy access.
243 We bury the doc strings of functions and variables inside comments in
244 the file, and bring them into core only when they are actually needed.
246 When this option is true, if you load the compiled file and then move it,
247 you won't be able to find the documentation of anything in that file.
249 To disable this option for a certain file, make it a file-local variable
250 in the source file. For example, add this to the first line:
251 -*-byte-compile-dynamic-docstrings:nil;-*-
252 You can also set the variable globally.
254 This option is enabled by default because it reduces Emacs memory usage."
257 ;;;###autoload(put 'byte-compile-dynamic-docstrings 'safe-local-variable 'booleanp)
259 (defconst byte-compile-log-buffer
"*Compile-Log*"
260 "Name of the byte-compiler's log buffer.")
262 (defcustom byte-optimize-log nil
263 "If non-nil, the byte-compiler will log its optimizations.
264 If this is 'source, then only source-level optimizations will be logged.
265 If it is 'byte, then only byte-level optimizations will be logged.
266 The information is logged to `byte-compile-log-buffer'."
268 :type
'(choice (const :tag
"none" nil
)
270 (const :tag
"source-level" source
)
271 (const :tag
"byte-level" byte
)))
273 (defcustom byte-compile-error-on-warn nil
274 "If true, the byte-compiler reports warnings with `error'."
278 (defconst byte-compile-warning-types
279 '(redefine callargs free-vars unresolved
280 obsolete noruntime cl-functions interactive-only
281 make-local mapcar constants suspicious lexical
)
282 "The list of warning types used when `byte-compile-warnings' is t.")
283 (defcustom byte-compile-warnings t
284 "List of warnings that the byte-compiler should issue (t for all).
286 Elements of the list may be:
288 free-vars references to variables not in the current lexical scope.
289 unresolved calls to unknown functions.
290 callargs function calls with args that don't match the definition.
291 redefine function name redefined from a macro to ordinary function or vice
292 versa, or redefined to take a different number of arguments.
293 obsolete obsolete variables and functions.
294 noruntime functions that may not be defined at runtime (typically
295 defined only under `eval-when-compile').
296 cl-functions calls to runtime functions from the CL package (as
297 distinguished from macros and aliases).
299 commands that normally shouldn't be called from Lisp code.
300 make-local calls to make-variable-buffer-local that may be incorrect.
301 mapcar mapcar called for effect.
302 constants let-binding of, or assignment to, constants/nonvariables.
303 suspicious constructs that usually don't do what the coder wanted.
305 If the list begins with `not', then the remaining elements specify warnings to
306 suppress. For example, (not mapcar) will suppress warnings about mapcar."
308 :type
`(choice (const :tag
"All" t
)
309 (set :menu-tag
"Some"
310 ,@(mapcar (lambda (x) `(const ,x
))
311 byte-compile-warning-types
))))
314 (put 'byte-compile-warnings
'safe-local-variable
317 (null (delq nil
(mapcar (lambda (x) (not (symbolp x
))) v
))))))
319 (defun byte-compile-warning-enabled-p (warning)
320 "Return non-nil if WARNING is enabled, according to `byte-compile-warnings'."
321 (or (eq byte-compile-warnings t
)
322 (if (eq (car byte-compile-warnings
) 'not
)
323 (not (memq warning byte-compile-warnings
))
324 (memq warning byte-compile-warnings
))))
327 (defun byte-compile-disable-warning (warning)
328 "Change `byte-compile-warnings' to disable WARNING.
329 If `byte-compile-warnings' is t, set it to `(not WARNING)'.
330 Otherwise, if the first element is `not', add WARNING, else remove it.
331 Normally you should let-bind `byte-compile-warnings' before calling this,
332 else the global value will be modified."
333 (setq byte-compile-warnings
334 (cond ((eq byte-compile-warnings t
)
336 ((eq (car byte-compile-warnings
) 'not
)
337 (if (memq warning byte-compile-warnings
)
338 byte-compile-warnings
339 (append byte-compile-warnings
(list warning
))))
341 (delq warning byte-compile-warnings
)))))
344 (defun byte-compile-enable-warning (warning)
345 "Change `byte-compile-warnings' to enable WARNING.
346 If `byte-compile-warnings' is `t', do nothing. Otherwise, if the
347 first element is `not', remove WARNING, else add it.
348 Normally you should let-bind `byte-compile-warnings' before calling this,
349 else the global value will be modified."
350 (or (eq byte-compile-warnings t
)
351 (setq byte-compile-warnings
352 (cond ((eq (car byte-compile-warnings
) 'not
)
353 (delq warning byte-compile-warnings
))
354 ((memq warning byte-compile-warnings
)
355 byte-compile-warnings
)
357 (append byte-compile-warnings
(list warning
)))))))
359 (defvar byte-compile-interactive-only-functions
360 '(beginning-of-buffer end-of-buffer replace-string replace-regexp
361 insert-file insert-buffer insert-file-literally previous-line next-line
362 goto-line comint-run delete-backward-char
)
363 "List of commands that are not meant to be called from Lisp.")
365 (defvar byte-compile-not-obsolete-vars nil
366 "If non-nil, a list of variables that shouldn't be reported as obsolete.")
368 (defvar byte-compile-not-obsolete-funcs nil
369 "If non-nil, a list of functions that shouldn't be reported as obsolete.")
371 (defcustom byte-compile-generate-call-tree nil
372 "Non-nil means collect call-graph information when compiling.
373 This records which functions were called and from where.
374 If the value is t, compilation displays the call graph when it finishes.
375 If the value is neither t nor nil, compilation asks you whether to display
378 The call tree only lists functions called, not macros used. Those functions
379 which the byte-code interpreter knows about directly (eq, cons, etc.) are
382 The call tree also lists those functions which are not known to be called
383 \(that is, to which no calls have been compiled). Functions which can be
384 invoked interactively are excluded from this list."
386 :type
'(choice (const :tag
"Yes" t
) (const :tag
"No" nil
)
387 (other :tag
"Ask" lambda
)))
389 (defvar byte-compile-call-tree nil
390 "Alist of functions and their call tree.
391 Each element looks like
393 \(FUNCTION CALLERS CALLS\)
395 where CALLERS is a list of functions that call FUNCTION, and CALLS
396 is a list of functions for which calls were generated while compiling
399 (defcustom byte-compile-call-tree-sort
'name
400 "If non-nil, sort the call tree.
401 The values `name', `callers', `calls', `calls+callers'
402 specify different fields to sort on."
404 :type
'(choice (const name
) (const callers
) (const calls
)
405 (const calls
+callers
) (const nil
)))
407 (defvar byte-compile-debug t
)
408 (setq debug-on-error t
)
410 (defvar byte-compile-constants nil
411 "List of all constants encountered during compilation of this form.")
412 (defvar byte-compile-variables nil
413 "List of all variables encountered during compilation of this form.")
414 (defvar byte-compile-bound-variables nil
415 "List of dynamic variables bound in the context of the current form.
416 This list lives partly on the stack.")
417 (defvar byte-compile-const-variables nil
418 "List of variables declared as constants during compilation of this file.")
419 (defvar byte-compile-free-references
)
420 (defvar byte-compile-free-assignments
)
422 (defvar byte-compiler-error-flag
)
424 (defconst byte-compile-initial-macro-environment
426 ;; (byte-compiler-options . (lambda (&rest forms)
427 ;; (apply 'byte-compiler-options-handler forms)))
428 (declare-function . byte-compile-macroexpand-declare-function
)
429 (eval-when-compile .
(lambda (&rest body
)
433 (byte-compile-top-level
434 (byte-compile-preprocess (cons 'progn body
)))))))
435 (eval-and-compile .
(lambda (&rest body
)
436 (byte-compile-eval-before-compile (cons 'progn body
))
437 (cons 'progn body
))))
438 "The default macro-environment passed to macroexpand by the compiler.
439 Placing a macro here will cause a macro to have different semantics when
440 expanded by the compiler as when expanded by the interpreter.")
442 (defvar byte-compile-macro-environment byte-compile-initial-macro-environment
443 "Alist of macros defined in the file being compiled.
444 Each element looks like (MACRONAME . DEFINITION). It is
445 \(MACRONAME . nil) when a macro is redefined as a function.")
447 (defvar byte-compile-function-environment nil
448 "Alist of functions defined in the file being compiled.
449 This is so we can inline them when necessary.
450 Each element looks like (FUNCTIONNAME . DEFINITION). It is
451 \(FUNCTIONNAME . nil) when a function is redefined as a macro.
452 It is \(FUNCTIONNAME . t) when all we know is that it was defined,
453 and we don't know the definition. For an autoloaded function, DEFINITION
454 has the form (autoload . FILENAME).")
456 (defvar byte-compile-unresolved-functions nil
457 "Alist of undefined functions to which calls have been compiled.
458 This variable is only significant whilst compiling an entire buffer.
459 Used for warnings when a function is not known to be defined or is later
460 defined with incorrect args.")
462 (defvar byte-compile-noruntime-functions nil
463 "Alist of functions called that may not be defined when the compiled code is run.
464 Used for warnings about calling a function that is defined during compilation
465 but won't necessarily be defined when the compiled file is loaded.")
467 ;; Variables for lexical binding
468 (defvar byte-compile-lexical-environment nil
469 "The current lexical environment.")
471 (defvar byte-compile-tag-number
0)
472 (defvar byte-compile-output nil
473 "Alist describing contents to put in byte code string.
474 Each element is (INDEX . VALUE)")
475 (defvar byte-compile-depth
0 "Current depth of execution stack.")
476 (defvar byte-compile-maxdepth
0 "Maximum depth of execution stack.")
479 ;;; The byte codes; this information is duplicated in bytecomp.c
481 (defvar byte-code-vector nil
482 "An array containing byte-code names indexed by byte-code values.")
484 (defvar byte-stack
+-info nil
485 "An array with the stack adjustment for each byte-code.")
487 (defmacro byte-defop
(opcode stack-adjust opname
&optional docstring
)
488 ;; This is a speed-hack for building the byte-code-vector at compile-time.
489 ;; We fill in the vector at macroexpand-time, and then after the last call
490 ;; to byte-defop, we write the vector out as a constant instead of writing
491 ;; out a bunch of calls to aset.
492 ;; Actually, we don't fill in the vector itself, because that could make
493 ;; it problematic to compile big changes to this compiler; we store the
494 ;; values on its plist, and remove them later in -extrude.
495 (let ((v1 (or (get 'byte-code-vector
'tmp-compile-time-value
)
496 (put 'byte-code-vector
'tmp-compile-time-value
497 (make-vector 256 nil
))))
498 (v2 (or (get 'byte-stack
+-info
'tmp-compile-time-value
)
499 (put 'byte-stack
+-info
'tmp-compile-time-value
500 (make-vector 256 nil
)))))
501 (aset v1 opcode opname
)
502 (aset v2 opcode stack-adjust
))
504 (list 'defconst opname opcode
(concat "Byte code opcode " docstring
"."))
505 (list 'defconst opname opcode
)))
507 (defmacro byte-extrude-byte-code-vectors
()
508 (prog1 (list 'setq
'byte-code-vector
509 (get 'byte-code-vector
'tmp-compile-time-value
)
511 (get 'byte-stack
+-info
'tmp-compile-time-value
))
512 (put 'byte-code-vector
'tmp-compile-time-value nil
)
513 (put 'byte-stack
+-info
'tmp-compile-time-value nil
)))
516 ;; These opcodes are special in that they pack their argument into the
519 (byte-defop 0 1 byte-stack-ref
"for stack reference")
520 (byte-defop 8 1 byte-varref
"for variable reference")
521 (byte-defop 16 -
1 byte-varset
"for setting a variable")
522 (byte-defop 24 -
1 byte-varbind
"for binding a variable")
523 (byte-defop 32 0 byte-call
"for calling a function")
524 (byte-defop 40 0 byte-unbind
"for unbinding special bindings")
525 ;; codes 8-47 are consumed by the preceding opcodes
529 (byte-defop 56 -
1 byte-nth
)
530 (byte-defop 57 0 byte-symbolp
)
531 (byte-defop 58 0 byte-consp
)
532 (byte-defop 59 0 byte-stringp
)
533 (byte-defop 60 0 byte-listp
)
534 (byte-defop 61 -
1 byte-eq
)
535 (byte-defop 62 -
1 byte-memq
)
536 (byte-defop 63 0 byte-not
)
537 (byte-defop 64 0 byte-car
)
538 (byte-defop 65 0 byte-cdr
)
539 (byte-defop 66 -
1 byte-cons
)
540 (byte-defop 67 0 byte-list1
)
541 (byte-defop 68 -
1 byte-list2
)
542 (byte-defop 69 -
2 byte-list3
)
543 (byte-defop 70 -
3 byte-list4
)
544 (byte-defop 71 0 byte-length
)
545 (byte-defop 72 -
1 byte-aref
)
546 (byte-defop 73 -
2 byte-aset
)
547 (byte-defop 74 0 byte-symbol-value
)
548 (byte-defop 75 0 byte-symbol-function
) ; this was commented out
549 (byte-defop 76 -
1 byte-set
)
550 (byte-defop 77 -
1 byte-fset
) ; this was commented out
551 (byte-defop 78 -
1 byte-get
)
552 (byte-defop 79 -
2 byte-substring
)
553 (byte-defop 80 -
1 byte-concat2
)
554 (byte-defop 81 -
2 byte-concat3
)
555 (byte-defop 82 -
3 byte-concat4
)
556 (byte-defop 83 0 byte-sub1
)
557 (byte-defop 84 0 byte-add1
)
558 (byte-defop 85 -
1 byte-eqlsign
)
559 (byte-defop 86 -
1 byte-gtr
)
560 (byte-defop 87 -
1 byte-lss
)
561 (byte-defop 88 -
1 byte-leq
)
562 (byte-defop 89 -
1 byte-geq
)
563 (byte-defop 90 -
1 byte-diff
)
564 (byte-defop 91 0 byte-negate
)
565 (byte-defop 92 -
1 byte-plus
)
566 (byte-defop 93 -
1 byte-max
)
567 (byte-defop 94 -
1 byte-min
)
568 (byte-defop 95 -
1 byte-mult
) ; v19 only
569 (byte-defop 96 1 byte-point
)
570 (byte-defop 98 0 byte-goto-char
)
571 (byte-defop 99 0 byte-insert
)
572 (byte-defop 100 1 byte-point-max
)
573 (byte-defop 101 1 byte-point-min
)
574 (byte-defop 102 0 byte-char-after
)
575 (byte-defop 103 1 byte-following-char
)
576 (byte-defop 104 1 byte-preceding-char
)
577 (byte-defop 105 1 byte-current-column
)
578 (byte-defop 106 0 byte-indent-to
)
579 (byte-defop 107 0 byte-scan-buffer-OBSOLETE
) ; no longer generated as of v18
580 (byte-defop 108 1 byte-eolp
)
581 (byte-defop 109 1 byte-eobp
)
582 (byte-defop 110 1 byte-bolp
)
583 (byte-defop 111 1 byte-bobp
)
584 (byte-defop 112 1 byte-current-buffer
)
585 (byte-defop 113 0 byte-set-buffer
)
586 (byte-defop 114 0 byte-save-current-buffer
587 "To make a binding to record the current buffer")
588 (byte-defop 115 0 byte-set-mark-OBSOLETE
)
590 ;; These ops are new to v19
591 (byte-defop 117 0 byte-forward-char
)
592 (byte-defop 118 0 byte-forward-word
)
593 (byte-defop 119 -
1 byte-skip-chars-forward
)
594 (byte-defop 120 -
1 byte-skip-chars-backward
)
595 (byte-defop 121 0 byte-forward-line
)
596 (byte-defop 122 0 byte-char-syntax
)
597 (byte-defop 123 -
1 byte-buffer-substring
)
598 (byte-defop 124 -
1 byte-delete-region
)
599 (byte-defop 125 -
1 byte-narrow-to-region
)
600 (byte-defop 126 1 byte-widen
)
601 (byte-defop 127 0 byte-end-of-line
)
605 ;; These store their argument in the next two bytes
606 (byte-defop 129 1 byte-constant2
607 "for reference to a constant with vector index >= byte-constant-limit")
608 (byte-defop 130 0 byte-goto
"for unconditional jump")
609 (byte-defop 131 -
1 byte-goto-if-nil
"to pop value and jump if it's nil")
610 (byte-defop 132 -
1 byte-goto-if-not-nil
"to pop value and jump if it's not nil")
611 (byte-defop 133 -
1 byte-goto-if-nil-else-pop
612 "to examine top-of-stack, jump and don't pop it if it's nil,
614 (byte-defop 134 -
1 byte-goto-if-not-nil-else-pop
615 "to examine top-of-stack, jump and don't pop it if it's non nil,
618 (byte-defop 135 -
1 byte-return
"to pop a value and return it from `byte-code'")
619 (byte-defop 136 -
1 byte-discard
"to discard one value from stack")
620 (byte-defop 137 1 byte-dup
"to duplicate the top of the stack")
622 (byte-defop 138 0 byte-save-excursion
623 "to make a binding to record the buffer, point and mark")
624 (byte-defop 140 0 byte-save-restriction
625 "to make a binding to record the current buffer clipping restrictions")
626 (byte-defop 141 -
1 byte-catch
627 "for catch. Takes, on stack, the tag and an expression for the body")
628 (byte-defop 142 -
1 byte-unwind-protect
629 "for unwind-protect. Takes, on stack, an expression for the unwind-action")
631 ;; For condition-case. Takes, on stack, the variable to bind,
632 ;; an expression for the body, and a list of clauses.
633 (byte-defop 143 -
2 byte-condition-case
)
635 ;; For entry to with-output-to-temp-buffer.
636 ;; Takes, on stack, the buffer name.
637 ;; Binds standard-output and does some other things.
638 ;; Returns with temp buffer on the stack in place of buffer name.
639 ;; (byte-defop 144 0 byte-temp-output-buffer-setup)
641 ;; For exit from with-output-to-temp-buffer.
642 ;; Expects the temp buffer on the stack underneath value to return.
643 ;; Pops them both, then pushes the value back on.
644 ;; Unbinds standard-output and makes the temp buffer visible.
645 ;; (byte-defop 145 -1 byte-temp-output-buffer-show)
647 ;; these ops are new to v19
649 ;; To unbind back to the beginning of this frame.
650 ;; Not used yet, but will be needed for tail-recursion elimination.
651 (byte-defop 146 0 byte-unbind-all
)
653 ;; these ops are new to v19
654 (byte-defop 147 -
2 byte-set-marker
)
655 (byte-defop 148 0 byte-match-beginning
)
656 (byte-defop 149 0 byte-match-end
)
657 (byte-defop 150 0 byte-upcase
)
658 (byte-defop 151 0 byte-downcase
)
659 (byte-defop 152 -
1 byte-string
=)
660 (byte-defop 153 -
1 byte-string
<)
661 (byte-defop 154 -
1 byte-equal
)
662 (byte-defop 155 -
1 byte-nthcdr
)
663 (byte-defop 156 -
1 byte-elt
)
664 (byte-defop 157 -
1 byte-member
)
665 (byte-defop 158 -
1 byte-assq
)
666 (byte-defop 159 0 byte-nreverse
)
667 (byte-defop 160 -
1 byte-setcar
)
668 (byte-defop 161 -
1 byte-setcdr
)
669 (byte-defop 162 0 byte-car-safe
)
670 (byte-defop 163 0 byte-cdr-safe
)
671 (byte-defop 164 -
1 byte-nconc
)
672 (byte-defop 165 -
1 byte-quo
)
673 (byte-defop 166 -
1 byte-rem
)
674 (byte-defop 167 0 byte-numberp
)
675 (byte-defop 168 0 byte-integerp
)
679 (byte-defop 175 nil byte-listN
)
680 (byte-defop 176 nil byte-concatN
)
681 (byte-defop 177 nil byte-insertN
)
683 (byte-defop 178 -
1 byte-stack-set
) ; stack offset in following one byte
684 (byte-defop 179 -
1 byte-stack-set2
) ; stack offset in following two bytes
686 ;; if (following one byte & 0x80) == 0
687 ;; discard (following one byte & 0x7F) stack entries
689 ;; discard (following one byte & 0x7F) stack entries _underneath_ TOS
690 ;; (that is, if the operand = 0x83, ... X Y Z T => ... T)
691 (byte-defop 182 nil byte-discardN
)
692 ;; `byte-discardN-preserve-tos' is a pseudo-op that gets turned into
693 ;; `byte-discardN' with the high bit in the operand set (by
694 ;; `byte-compile-lapcode').
695 (defconst byte-discardN-preserve-tos byte-discardN
)
699 (byte-defop 192 1 byte-constant
"for reference to a constant")
700 ;; codes 193-255 are consumed by byte-constant.
701 (defconst byte-constant-limit
64
702 "Exclusive maximum index usable in the `byte-constant' opcode.")
704 (defconst byte-goto-ops
'(byte-goto byte-goto-if-nil byte-goto-if-not-nil
705 byte-goto-if-nil-else-pop
706 byte-goto-if-not-nil-else-pop
)
707 "List of byte-codes whose offset is a pc.")
709 (defconst byte-goto-always-pop-ops
'(byte-goto-if-nil byte-goto-if-not-nil
))
711 (byte-extrude-byte-code-vectors)
713 ;;; lapcode generator
715 ;; the byte-compiler now does source -> lapcode -> bytecode instead of
716 ;; source -> bytecode, because it's a lot easier to make optimizations
717 ;; on lapcode than on bytecode.
719 ;; Elements of the lapcode list are of the form (<instruction> . <parameter>)
720 ;; where instruction is a symbol naming a byte-code instruction,
721 ;; and parameter is an argument to that instruction, if any.
723 ;; The instruction can be the pseudo-op TAG, which means that this position
724 ;; in the instruction stream is a target of a goto. (car PARAMETER) will be
725 ;; the PC for this location, and the whole instruction "(TAG pc)" will be the
726 ;; parameter for some goto op.
728 ;; If the operation is varbind, varref, varset or push-constant, then the
729 ;; parameter is (variable/constant . index_in_constant_vector).
731 ;; First, the source code is macroexpanded and optimized in various ways.
732 ;; Then the resultant code is compiled into lapcode. Another set of
733 ;; optimizations are then run over the lapcode. Then the variables and
734 ;; constants referenced by the lapcode are collected and placed in the
735 ;; constants-vector. (This happens now so that variables referenced by dead
736 ;; code don't consume space.) And finally, the lapcode is transformed into
737 ;; compacted byte-code.
739 ;; A distinction is made between variables and constants because the variable-
740 ;; referencing instructions are more sensitive to the variables being near the
741 ;; front of the constants-vector than the constant-referencing instructions.
742 ;; Also, this lets us notice references to free variables.
744 (defmacro byte-compile-push-bytecodes
(&rest args
)
745 "Push BYTE... onto BYTES, and increment PC by the number of bytes pushed.
746 ARGS is of the form (BYTE... BYTES PC), where BYTES and PC are variable names.
747 BYTES and PC are updated after evaluating all the arguments."
748 (let ((byte-exprs (butlast args
2))
749 (bytes-var (car (last args
2)))
750 (pc-var (car (last args
))))
751 `(setq ,bytes-var
,(if (null (cdr byte-exprs
))
752 `(progn (assert (<= 0 ,(car byte-exprs
)))
753 (cons ,@byte-exprs
,bytes-var
))
754 `(nconc (list ,@(reverse byte-exprs
)) ,bytes-var
))
755 ,pc-var
(+ ,(length byte-exprs
) ,pc-var
))))
757 (defmacro byte-compile-push-bytecode-const2
(opcode const2 bytes pc
)
758 "Push OPCODE and the two-byte constant CONST2 onto BYTES, and add 3 to PC.
759 CONST2 may be evaulated multiple times."
760 `(byte-compile-push-bytecodes ,opcode
(logand ,const2
255) (lsh ,const2 -
8)
763 (defun byte-compile-lapcode (lap)
764 "Turns lapcode into bytecode. The lapcode is destroyed."
765 ;; Lapcode modifications: changes the ID of a tag to be the tag's PC.
766 (let ((pc 0) ; Program counter
767 op off
; Operation & offset
768 opcode
; numeric value of OP
769 (bytes '()) ; Put the output bytes here
770 (patchlist nil
)) ; List of gotos to patch
771 (dolist (lap-entry lap
)
772 (setq op
(car lap-entry
)
776 (error "Non-symbolic opcode `%s'" op
))
780 ;; a no-op added by `byte-compile-delay-out'
783 "Placeholder added by `byte-compile-delay-out' not filled in.")
787 (if (eq op
'byte-discardN-preserve-tos
)
788 ;; byte-discardN-preserve-tos is a pseudo op, which
789 ;; is actually the same as byte-discardN
790 ;; with a modified argument.
793 (cond ((memq op byte-goto-ops
)
795 (byte-compile-push-bytecodes opcode nil
(cdr off
) bytes pc
)
796 (push bytes patchlist
))
797 ((or (and (consp off
)
798 ;; Variable or constant reference
801 (eq op
'byte-constant
)))
802 (and (eq op
'byte-constant
) ;; 'byte-closed-var
805 (if (< off byte-constant-limit
)
806 (byte-compile-push-bytecodes (+ byte-constant off
)
808 (byte-compile-push-bytecode-const2 byte-constant2 off
810 ((and (= opcode byte-stack-set
)
812 ;; Use the two-byte version of byte-stack-set if the
813 ;; offset is too large for the normal version.
814 (byte-compile-push-bytecode-const2 byte-stack-set2 off
816 ((and (>= opcode byte-listN
)
817 (< opcode byte-discardN
))
818 ;; These insns all put their operand into one extra byte.
819 (byte-compile-push-bytecodes opcode off bytes pc
))
820 ((= opcode byte-discardN
)
821 ;; byte-discardN is weird in that it encodes a flag in the
822 ;; top bit of its one-byte argument. If the argument is
823 ;; too large to fit in 7 bits, the opcode can be repeated.
824 (let ((flag (if (eq op
'byte-discardN-preserve-tos
) #x80
0)))
826 (byte-compile-push-bytecodes opcode
(logior #x7f flag
)
828 (setq off
(- off
#x7f
)))
829 (byte-compile-push-bytecodes opcode
(logior off flag
)
832 ;; opcode that doesn't use OFF
833 (byte-compile-push-bytecodes opcode bytes pc
))
834 ((and (eq opcode byte-stack-ref
) (eq off
0))
835 ;; (stack-ref 0) is really just another name for `dup'.
836 (debug) ;FIXME: When would this happen?
837 (byte-compile-push-bytecodes byte-dup bytes pc
))
838 ;; The following three cases are for the special
839 ;; insns that encode their operand into 0, 1, or 2
840 ;; extra bytes depending on its magnitude.
842 (byte-compile-push-bytecodes (+ opcode off
) bytes pc
))
844 (byte-compile-push-bytecodes (+ opcode
6) off bytes pc
))
846 (byte-compile-push-bytecode-const2 (+ opcode
7) off
848 ;;(if (not (= pc (length bytes)))
849 ;; (error "Compiler error: pc mismatch - %s %s" pc (length bytes)))
851 ;; Patch tag PCs into absolute jumps
852 (dolist (bytes-tail patchlist
)
853 (setq pc
(caar bytes-tail
)) ; Pick PC from goto's tag
854 (setcar (cdr bytes-tail
) (logand pc
255))
855 (setcar bytes-tail
(lsh pc -
8))
856 ;; FIXME: Replace this by some workaround.
857 (if (> (car bytes
) 255) (error "Bytecode overflow")))
859 (apply 'unibyte-string
(nreverse bytes
))))
862 ;;; compile-time evaluation
864 (defun byte-compile-cl-file-p (file)
865 "Return non-nil if FILE is one of the CL files."
867 (string-match "^cl\\>" (file-name-nondirectory file
))))
869 (defun byte-compile-eval (form)
870 "Eval FORM and mark the functions defined therein.
871 Each function's symbol gets added to `byte-compile-noruntime-functions'."
872 (let ((hist-orig load-history
)
873 (hist-nil-orig current-load-list
))
874 (prog1 (eval form lexical-binding
)
875 (when (byte-compile-warning-enabled-p 'noruntime
)
876 (let ((hist-new load-history
)
877 (hist-nil-new current-load-list
))
878 ;; Go through load-history, look for newly loaded files
879 ;; and mark all the functions defined therein.
880 (while (and hist-new
(not (eq hist-new hist-orig
)))
881 (let ((xs (pop hist-new
))
883 ;; Make sure the file was not already loaded before.
884 (unless (or (assoc (car xs
) hist-orig
)
885 ;; Don't give both the "noruntime" and
886 ;; "cl-functions" warning for the same function.
887 ;; FIXME This seems incorrect - these are two
888 ;; independent warnings. For example, you may be
889 ;; choosing to see the cl warnings but ignore them.
890 ;; You probably don't want to ignore noruntime in the
892 (and (byte-compile-warning-enabled-p 'cl-functions
)
893 (byte-compile-cl-file-p (car xs
))))
897 (unless (memq s old-autoloads
)
898 (push s byte-compile-noruntime-functions
)))
899 ((and (consp s
) (eq t
(car s
)))
900 (push (cdr s
) old-autoloads
))
901 ((and (consp s
) (eq 'autoload
(car s
)))
902 (push (cdr s
) byte-compile-noruntime-functions
)))))))
903 ;; Go through current-load-list for the locally defined funs.
905 (while (and hist-nil-new
(not (eq hist-nil-new hist-nil-orig
)))
906 (let ((s (pop hist-nil-new
)))
907 (when (and (symbolp s
) (not (memq s old-autoloads
)))
908 (push s byte-compile-noruntime-functions
))
909 (when (and (consp s
) (eq t
(car s
)))
910 (push (cdr s
) old-autoloads
)))))))
911 (when (byte-compile-warning-enabled-p 'cl-functions
)
912 (let ((hist-new load-history
))
913 ;; Go through load-history, looking for the cl files.
914 ;; Since new files are added at the start of load-history,
915 ;; we scan the new history until the tail matches the old.
916 (while (and (not byte-compile-cl-functions
)
917 hist-new
(not (eq hist-new hist-orig
)))
918 ;; We used to check if the file had already been loaded,
919 ;; but it is better to check non-nil byte-compile-cl-functions.
920 (and (byte-compile-cl-file-p (car (pop hist-new
)))
921 (byte-compile-find-cl-functions))))))))
923 (defun byte-compile-eval-before-compile (form)
924 "Evaluate FORM for `eval-and-compile'."
925 (let ((hist-nil-orig current-load-list
))
926 (prog1 (eval form lexical-binding
)
927 ;; (eval-and-compile (require 'cl) turns off warnings for cl functions.
928 ;; FIXME Why does it do that - just as a hack?
929 ;; There are other ways to do this nowadays.
930 (let ((tem current-load-list
))
931 (while (not (eq tem hist-nil-orig
))
932 (when (equal (car tem
) '(require . cl
))
933 (byte-compile-disable-warning 'cl-functions
))
934 (setq tem
(cdr tem
)))))))
936 ;;; byte compiler messages
938 (defvar byte-compile-current-form nil
)
939 (defvar byte-compile-dest-file nil
)
940 (defvar byte-compile-current-file nil
)
941 (defvar byte-compile-current-group nil
)
942 (defvar byte-compile-current-buffer nil
)
944 ;; Log something that isn't a warning.
945 (defmacro byte-compile-log
(format-string &rest args
)
948 (memq byte-optimize-log
'(t source
))
949 (let ((print-escape-newlines t
)
956 (lambda (x) (if (symbolp x
) (list 'prin1-to-string x
) x
))
959 ;; Log something that isn't a warning.
960 (defun byte-compile-log-1 (string)
961 (with-current-buffer byte-compile-log-buffer
962 (let ((inhibit-read-only t
))
963 (goto-char (point-max))
964 (byte-compile-warning-prefix nil nil
)
965 (cond (noninteractive
966 (message " %s" string
))
968 (insert (format "%s\n" string
)))))))
970 (defvar byte-compile-read-position nil
971 "Character position we began the last `read' from.")
972 (defvar byte-compile-last-position nil
973 "Last known character position in the input.")
975 ;; copied from gnus-util.el
976 (defsubst byte-compile-delete-first
(elt list
)
977 (if (eq (car list
) elt
)
980 (while (and (cdr list
)
981 (not (eq (cadr list
) elt
)))
982 (setq list
(cdr list
)))
984 (setcdr list
(cddr list
)))
987 ;; The purpose of this function is to iterate through the
988 ;; `read-symbol-positions-list'. Each time we process, say, a
989 ;; function definition (`defun') we remove `defun' from
990 ;; `read-symbol-positions-list', and set `byte-compile-last-position'
991 ;; to that symbol's character position. Similarly, if we encounter a
992 ;; variable reference, like in (1+ foo), we remove `foo' from the
993 ;; list. If our current position is after the symbol's position, we
994 ;; assume we've already passed that point, and look for the next
995 ;; occurrence of the symbol.
997 ;; This function should not be called twice for the same occurrence of
998 ;; a symbol, and it should not be called for symbols generated by the
999 ;; byte compiler itself; because rather than just fail looking up the
1000 ;; symbol, we may find an occurrence of the symbol further ahead, and
1001 ;; then `byte-compile-last-position' as advanced too far.
1003 ;; So your're probably asking yourself: Isn't this function a
1004 ;; gross hack? And the answer, of course, would be yes.
1005 (defun byte-compile-set-symbol-position (sym &optional allow-previous
)
1006 (when byte-compile-read-position
1009 (setq last byte-compile-last-position
1010 entry
(assq sym read-symbol-positions-list
))
1012 (setq byte-compile-last-position
1013 (+ byte-compile-read-position
(cdr entry
))
1014 read-symbol-positions-list
1015 (byte-compile-delete-first
1016 entry read-symbol-positions-list
)))
1017 (or (and allow-previous
1018 (not (= last byte-compile-last-position
)))
1019 (> last byte-compile-last-position
)))))))
1021 (defvar byte-compile-last-warned-form nil
)
1022 (defvar byte-compile-last-logged-file nil
)
1024 ;; This is used as warning-prefix for the compiler.
1025 ;; It is always called with the warnings buffer current.
1026 (defun byte-compile-warning-prefix (level entry
)
1027 (let* ((inhibit-read-only t
)
1028 (dir default-directory
)
1029 (file (cond ((stringp byte-compile-current-file
)
1030 (format "%s:" (file-relative-name
1031 byte-compile-current-file dir
)))
1032 ((bufferp byte-compile-current-file
)
1033 (format "Buffer %s:"
1034 (buffer-name byte-compile-current-file
)))
1036 (pos (if (and byte-compile-current-file
1037 (integerp byte-compile-read-position
))
1038 (with-current-buffer byte-compile-current-buffer
1041 (goto-char byte-compile-last-position
)
1042 (1+ (count-lines (point-min) (point-at-bol))))
1044 (goto-char byte-compile-last-position
)
1045 (1+ (current-column)))))
1047 (form (if (eq byte-compile-current-form
:end
) "end of data"
1048 (or byte-compile-current-form
"toplevel form"))))
1049 (when (or (and byte-compile-current-file
1050 (not (equal byte-compile-current-file
1051 byte-compile-last-logged-file
)))
1052 (and byte-compile-current-form
1053 (not (eq byte-compile-current-form
1054 byte-compile-last-warned-form
))))
1055 (insert (format "\nIn %s:\n" form
)))
1057 (insert (format "%s%s" file pos
))))
1058 (setq byte-compile-last-logged-file byte-compile-current-file
1059 byte-compile-last-warned-form byte-compile-current-form
)
1062 ;; This no-op function is used as the value of warning-series
1063 ;; to tell inner calls to displaying-byte-compile-warnings
1064 ;; not to bind warning-series.
1065 (defun byte-compile-warning-series (&rest _ignore
)
1068 ;; (compile-mode) will cause this to be loaded.
1069 (declare-function compilation-forget-errors
"compile" ())
1071 ;; Log the start of a file in `byte-compile-log-buffer', and mark it as done.
1072 ;; Return the position of the start of the page in the log buffer.
1073 ;; But do nothing in batch mode.
1074 (defun byte-compile-log-file ()
1075 (and (not (equal byte-compile-current-file byte-compile-last-logged-file
))
1076 (not noninteractive
)
1077 (with-current-buffer (get-buffer-create byte-compile-log-buffer
)
1078 (goto-char (point-max))
1079 (let* ((inhibit-read-only t
)
1080 (dir (and byte-compile-current-file
1081 (file-name-directory byte-compile-current-file
)))
1082 (was-same (equal default-directory dir
))
1086 (insert (format "Leaving directory `%s'\n" default-directory
))))
1089 (setq pt
(point-marker))
1090 (if byte-compile-current-file
1091 (insert "\f\nCompiling "
1092 (if (stringp byte-compile-current-file
)
1093 (concat "file " byte-compile-current-file
)
1095 (buffer-name byte-compile-current-file
)))
1096 " at " (current-time-string) "\n")
1097 (insert "\f\nCompiling no file at " (current-time-string) "\n"))
1099 (setq default-directory dir
)
1101 (insert (format "Entering directory `%s'\n"
1102 default-directory
))))
1103 (setq byte-compile-last-logged-file byte-compile-current-file
1104 byte-compile-last-warned-form nil
)
1105 ;; Do this after setting default-directory.
1106 (unless (derived-mode-p 'compilation-mode
) (compilation-mode))
1107 (compilation-forget-errors)
1110 ;; Log a message STRING in `byte-compile-log-buffer'.
1111 ;; Also log the current function and file if not already done.
1112 (defun byte-compile-log-warning (string &optional fill level
)
1113 (let ((warning-prefix-function 'byte-compile-warning-prefix
)
1114 (warning-type-format "")
1115 (warning-fill-prefix (if fill
" "))
1116 (inhibit-read-only t
))
1117 (display-warning 'bytecomp string level byte-compile-log-buffer
)))
1119 (defun byte-compile-warn (format &rest args
)
1120 "Issue a byte compiler warning; use (format FORMAT ARGS...) for message."
1121 (setq format
(apply 'format format args
))
1122 (if byte-compile-error-on-warn
1123 (error "%s" format
) ; byte-compile-file catches and logs it
1124 (byte-compile-log-warning format t
:warning
)))
1126 (defun byte-compile-warn-obsolete (symbol)
1127 "Warn that SYMBOL (a variable or function) is obsolete."
1128 (when (byte-compile-warning-enabled-p 'obsolete
)
1129 (let* ((funcp (get symbol
'byte-obsolete-info
))
1130 (obsolete (or funcp
(get symbol
'byte-obsolete-variable
)))
1131 (instead (car obsolete
))
1132 (asof (if funcp
(nth 2 obsolete
) (cdr obsolete
))))
1133 (unless (and funcp
(memq symbol byte-compile-not-obsolete-funcs
))
1134 (byte-compile-warn "`%s' is an obsolete %s%s%s" symbol
1135 (if funcp
"function" "variable")
1136 (if asof
(concat " (as of Emacs " asof
")") "")
1137 (cond ((stringp instead
)
1138 (concat "; " instead
))
1140 (format "; use `%s' instead." instead
))
1143 (defun byte-compile-report-error (error-info)
1144 "Report Lisp error in compilation. ERROR-INFO is the error data."
1145 (setq byte-compiler-error-flag t
)
1146 (byte-compile-log-warning
1147 (error-message-string error-info
)
1150 ;;; sanity-checking arglists
1152 (defun byte-compile-fdefinition (name macro-p
)
1153 ;; If a function has an entry saying (FUNCTION . t).
1154 ;; that means we know it is defined but we don't know how.
1155 ;; If a function has an entry saying (FUNCTION . nil),
1156 ;; that means treat it as not defined.
1157 (let* ((list (if macro-p
1158 byte-compile-macro-environment
1159 byte-compile-function-environment
))
1160 (env (cdr (assq name list
))))
1163 (while (and (symbolp fn
)
1165 (or (symbolp (symbol-function fn
))
1166 (consp (symbol-function fn
))
1168 (byte-code-function-p (symbol-function fn
)))))
1169 (setq fn
(symbol-function fn
)))
1170 (let ((advertised (gethash (if (and (symbolp fn
) (fboundp fn
))
1172 (symbol-function fn
)
1174 advertised-signature-table t
)))
1178 `(macro lambda
,advertised
)
1179 `(lambda ,advertised
)))
1180 ((and (not macro-p
) (byte-code-function-p fn
)) fn
)
1181 ((not (consp fn
)) nil
)
1182 ((eq 'macro
(car fn
)) (cdr fn
))
1184 ((eq 'autoload
(car fn
)) nil
)
1187 (defun byte-compile-arglist-signature (arglist)
1188 (if (integerp arglist
)
1189 ;; New style byte-code arglist.
1190 (cons (logand arglist
127) ;Mandatory.
1191 (if (zerop (logand arglist
128)) ;No &rest.
1192 (lsh arglist -
8))) ;Nonrest.
1193 ;; Old style byte-code, or interpreted function.
1198 (cond ((eq (car arglist
) '&optional
)
1199 (or opts
(setq opts
0)))
1200 ((eq (car arglist
) '&rest
)
1206 (setq opts
(1+ opts
))
1207 (setq args
(1+ args
)))))
1208 (setq arglist
(cdr arglist
)))
1209 (cons args
(if restp nil
(if opts
(+ args opts
) args
))))))
1212 (defun byte-compile-arglist-signatures-congruent-p (old new
)
1214 (> (car new
) (car old
)) ; requires more args now
1215 (and (null (cdr old
)) ; took rest-args, doesn't any more
1217 (and (cdr new
) (cdr old
) ; can't take as many args now
1218 (< (cdr new
) (cdr old
)))
1221 (defun byte-compile-arglist-signature-string (signature)
1222 (cond ((null (cdr signature
))
1223 (format "%d+" (car signature
)))
1224 ((= (car signature
) (cdr signature
))
1225 (format "%d" (car signature
)))
1226 (t (format "%d-%d" (car signature
) (cdr signature
)))))
1229 ;; Warn if the form is calling a function with the wrong number of arguments.
1230 (defun byte-compile-callargs-warn (form)
1231 (let* ((def (or (byte-compile-fdefinition (car form
) nil
)
1232 (byte-compile-fdefinition (car form
) t
)))
1233 (sig (if (and def
(not (eq def t
)))
1235 (and (eq (car-safe def
) 'macro
)
1236 (eq (car-safe (cdr-safe def
)) 'lambda
)
1237 (setq def
(cdr def
)))
1238 (byte-compile-arglist-signature
1239 (if (memq (car-safe def
) '(declared lambda
))
1241 (if (byte-code-function-p def
)
1244 (if (and (fboundp (car form
))
1245 (subrp (symbol-function (car form
))))
1246 (subr-arity (symbol-function (car form
))))))
1247 (ncall (length (cdr form
))))
1248 ;; Check many or unevalled from subr-arity.
1249 (if (and (cdr-safe sig
)
1250 (not (numberp (cdr sig
))))
1253 (when (or (< ncall
(car sig
))
1254 (and (cdr sig
) (> ncall
(cdr sig
))))
1255 (byte-compile-set-symbol-position (car form
))
1257 "%s called with %d argument%s, but %s %s"
1259 (if (= 1 ncall
) "" "s")
1260 (if (< ncall
(car sig
))
1263 (byte-compile-arglist-signature-string sig
))))
1264 (byte-compile-format-warn form
)
1265 ;; Check to see if the function will be available at runtime
1266 ;; and/or remember its arity if it's unknown.
1267 (or (and (or def
(fboundp (car form
))) ; might be a subr or autoload.
1268 (not (memq (car form
) byte-compile-noruntime-functions
)))
1269 (eq (car form
) byte-compile-current-form
) ; ## this doesn't work
1271 ;; It's a currently-undefined function.
1272 ;; Remember number of args in call.
1273 (let ((cons (assq (car form
) byte-compile-unresolved-functions
))
1274 (n (length (cdr form
))))
1276 (or (memq n
(cdr cons
))
1277 (setcdr cons
(cons n
(cdr cons
))))
1278 (push (list (car form
) n
)
1279 byte-compile-unresolved-functions
))))))
1281 (defun byte-compile-format-warn (form)
1282 "Warn if FORM is `format'-like with inconsistent args.
1283 Applies if head of FORM is a symbol with non-nil property
1284 `byte-compile-format-like' and first arg is a constant string.
1285 Then check the number of format fields matches the number of
1287 (when (and (symbolp (car form
))
1288 (stringp (nth 1 form
))
1289 (get (car form
) 'byte-compile-format-like
))
1290 (let ((nfields (with-temp-buffer
1291 (insert (nth 1 form
))
1292 (goto-char (point-min))
1294 (while (re-search-forward "%." nil t
)
1295 (unless (eq ?%
(char-after (1+ (match-beginning 0))))
1298 (nargs (- (length form
) 2)))
1299 (unless (= nargs nfields
)
1301 "`%s' called with %d args to fill %d format field(s)" (car form
)
1304 (dolist (elt '(format message error
))
1305 (put elt
'byte-compile-format-like t
))
1307 ;; Warn if a custom definition fails to specify :group.
1308 (defun byte-compile-nogroup-warn (form)
1309 (if (and (memq (car form
) '(custom-declare-face custom-declare-variable
))
1310 byte-compile-current-group
)
1311 ;; The group will be provided implicitly.
1313 (let ((keyword-args (cdr (cdr (cdr (cdr form
)))))
1315 (or (not (eq (car-safe name
) 'quote
))
1316 (and (eq (car form
) 'custom-declare-group
)
1317 (equal name
''emacs
))
1318 (plist-get keyword-args
:group
)
1319 (not (and (consp name
) (eq (car name
) 'quote
)))
1321 "%s for `%s' fails to specify containing group"
1322 (cdr (assq (car form
)
1323 '((custom-declare-group . defgroup
)
1324 (custom-declare-face . defface
)
1325 (custom-declare-variable . defcustom
))))
1327 ;; Update the current group, if needed.
1328 (if (and byte-compile-current-file
;Only when compiling a whole file.
1329 (eq (car form
) 'custom-declare-group
)
1330 (eq (car-safe name
) 'quote
))
1331 (setq byte-compile-current-group
(cadr name
))))))
1333 ;; Warn if the function or macro is being redefined with a different
1334 ;; number of arguments.
1335 (defun byte-compile-arglist-warn (form macrop
)
1336 (let* ((name (nth 1 form
))
1337 (old (byte-compile-fdefinition name macrop
)))
1338 (if (and old
(not (eq old t
)))
1340 (and (eq 'macro
(car-safe old
))
1341 (eq 'lambda
(car-safe (cdr-safe old
)))
1342 (setq old
(cdr old
)))
1343 (let ((sig1 (byte-compile-arglist-signature
1345 (`(lambda ,args .
,_
) args
)
1346 (`(closure ,_
,args .
,_
) args
)
1347 ((pred byte-code-function-p
) (aref old
0))
1349 (sig2 (byte-compile-arglist-signature (nth 2 form
))))
1350 (unless (byte-compile-arglist-signatures-congruent-p sig1 sig2
)
1351 (byte-compile-set-symbol-position name
)
1353 "%s %s used to take %s %s, now takes %s"
1354 (if (eq (car form
) 'defun
) "function" "macro")
1356 (byte-compile-arglist-signature-string sig1
)
1357 (if (equal sig1
'(1 .
1)) "argument" "arguments")
1358 (byte-compile-arglist-signature-string sig2
)))))
1359 ;; This is the first definition. See if previous calls are compatible.
1360 (let ((calls (assq name byte-compile-unresolved-functions
))
1363 (when (and (symbolp name
)
1364 (eq (get name
'byte-optimizer
)
1365 'byte-compile-inline-expand
))
1366 (byte-compile-warn "defsubst `%s' was used before it was defined"
1368 (setq sig
(byte-compile-arglist-signature (nth 2 form
))
1369 nums
(sort (copy-sequence (cdr calls
)) (function <))
1371 max
(car (nreverse nums
)))
1372 (when (or (< min
(car sig
))
1373 (and (cdr sig
) (> max
(cdr sig
))))
1374 (byte-compile-set-symbol-position name
)
1376 "%s being defined to take %s%s, but was previously called with %s"
1378 (byte-compile-arglist-signature-string sig
)
1379 (if (equal sig
'(1 .
1)) " arg" " args")
1380 (byte-compile-arglist-signature-string (cons min max
))))
1382 (setq byte-compile-unresolved-functions
1383 (delq calls byte-compile-unresolved-functions
)))))))
1385 (defvar byte-compile-cl-functions nil
1386 "List of functions defined in CL.")
1388 ;; Can't just add this to cl-load-hook, because that runs just before
1389 ;; the forms from cl.el get added to load-history.
1390 (defun byte-compile-find-cl-functions ()
1391 (unless byte-compile-cl-functions
1392 (dolist (elt load-history
)
1393 (and (byte-compile-cl-file-p (car elt
))
1394 (dolist (e (cdr elt
))
1395 ;; Includes the cl-foo functions that cl autoloads.
1396 (when (memq (car-safe e
) '(autoload defun
))
1397 (push (cdr e
) byte-compile-cl-functions
)))))))
1399 (defun byte-compile-cl-warn (form)
1400 "Warn if FORM is a call of a function from the CL package."
1401 (let ((func (car-safe form
)))
1402 (if (and byte-compile-cl-functions
1403 (memq func byte-compile-cl-functions
)
1404 ;; Aliases which won't have been expanded at this point.
1405 ;; These aren't all aliases of subrs, so not trivial to
1406 ;; avoid hardwiring the list.
1408 '(cl-block-wrapper cl-block-throw
1409 multiple-value-call nth-value
1410 copy-seq first second rest endp cl-member
1411 ;; These are included in generated code
1412 ;; that can't be called except at compile time
1413 ;; or unless cl is loaded anyway.
1414 cl-defsubst-expand cl-struct-setf-expander
1415 ;; These would sometimes be warned about
1416 ;; but such warnings are never useful,
1417 ;; so don't warn about them.
1418 macroexpand cl-macroexpand-all
1419 cl-compiling-file
))))
1420 (byte-compile-warn "function `%s' from cl package called at runtime"
1424 (defun byte-compile-print-syms (str1 strn syms
)
1426 (byte-compile-set-symbol-position (car syms
) t
))
1427 (cond ((and (cdr syms
) (not noninteractive
))
1432 (setq s
(symbol-name (pop syms
))
1433 L
(+ L
(length s
) 2))
1434 (if (< L
(1- fill-column
))
1435 (setq str
(concat str
" " s
(and syms
",")))
1436 (setq str
(concat str
"\n " s
(and syms
","))
1437 L
(+ (length s
) 4))))
1438 (byte-compile-warn "%s" str
)))
1440 (byte-compile-warn "%s %s"
1442 (mapconcat #'symbol-name syms
", ")))
1445 (byte-compile-warn str1
(car syms
)))))
1447 ;; If we have compiled any calls to functions which are not known to be
1448 ;; defined, issue a warning enumerating them.
1449 ;; `unresolved' in the list `byte-compile-warnings' disables this.
1450 (defun byte-compile-warn-about-unresolved-functions ()
1451 (when (byte-compile-warning-enabled-p 'unresolved
)
1452 (let ((byte-compile-current-form :end
)
1455 ;; Separate the functions that will not be available at runtime
1456 ;; from the truly unresolved ones.
1457 (dolist (f byte-compile-unresolved-functions
)
1459 (if (fboundp f
) (push f noruntime
) (push f unresolved
)))
1460 ;; Complain about the no-run-time functions
1461 (byte-compile-print-syms
1462 "the function `%s' might not be defined at runtime."
1463 "the following functions might not be defined at runtime:"
1465 ;; Complain about the unresolved functions
1466 (byte-compile-print-syms
1467 "the function `%s' is not known to be defined."
1468 "the following functions are not known to be defined:"
1473 (defsubst byte-compile-const-symbol-p
(symbol &optional any-value
)
1474 "Non-nil if SYMBOL is constant.
1475 If ANY-VALUE is nil, only return non-nil if the value of the symbol is the
1477 (or (memq symbol
'(nil t
))
1480 (or (memq symbol byte-compile-const-variables
)
1481 ;; FIXME: We should provide a less intrusive way to find out
1482 ;; if a variable is "constant".
1483 (and (boundp symbol
)
1485 (progn (set symbol
(symbol-value symbol
)) nil
)
1486 (setting-constant t
)))))))
1488 (defmacro byte-compile-constp
(form)
1489 "Return non-nil if FORM is a constant."
1490 `(cond ((consp ,form
) (eq (car ,form
) 'quote
))
1491 ((not (symbolp ,form
)))
1492 ((byte-compile-const-symbol-p ,form
))))
1494 (defmacro byte-compile-close-variables
(&rest body
)
1498 ;; Close over these variables to encapsulate the
1499 ;; compilation state
1501 (byte-compile-macro-environment
1502 ;; Copy it because the compiler may patch into the
1503 ;; macroenvironment.
1504 (copy-alist byte-compile-initial-macro-environment
))
1505 (byte-compile-function-environment nil
)
1506 (byte-compile-bound-variables nil
)
1507 (byte-compile-const-variables nil
)
1508 (byte-compile-free-references nil
)
1509 (byte-compile-free-assignments nil
)
1511 ;; Close over these variables so that `byte-compiler-options'
1512 ;; can change them on a per-file basis.
1514 (byte-compile-verbose byte-compile-verbose
)
1515 (byte-optimize byte-optimize
)
1516 (byte-compile-dynamic byte-compile-dynamic
)
1517 (byte-compile-dynamic-docstrings
1518 byte-compile-dynamic-docstrings
)
1519 ;; (byte-compile-generate-emacs19-bytecodes
1520 ;; byte-compile-generate-emacs19-bytecodes)
1521 (byte-compile-warnings byte-compile-warnings
)
1525 (defmacro displaying-byte-compile-warnings
(&rest body
)
1527 `(let* ((--displaying-byte-compile-warnings-fn (lambda () ,@body
))
1528 (warning-series-started
1529 (and (markerp warning-series
)
1530 (eq (marker-buffer warning-series
)
1531 (get-buffer byte-compile-log-buffer
)))))
1532 (byte-compile-find-cl-functions)
1533 (if (or (eq warning-series
'byte-compile-warning-series
)
1534 warning-series-started
)
1535 ;; warning-series does come from compilation,
1536 ;; so don't bind it, but maybe do set it.
1538 ;; Log the file name. Record position of that text.
1539 (setq tem
(byte-compile-log-file))
1540 (unless warning-series-started
1541 (setq warning-series
(or tem
'byte-compile-warning-series
)))
1542 (if byte-compile-debug
1543 (funcall --displaying-byte-compile-warnings-fn
)
1544 (condition-case error-info
1545 (funcall --displaying-byte-compile-warnings-fn
)
1546 (error (byte-compile-report-error error-info
)))))
1547 ;; warning-series does not come from compilation, so bind it.
1548 (let ((warning-series
1549 ;; Log the file name. Record position of that text.
1550 (or (byte-compile-log-file) 'byte-compile-warning-series
)))
1551 (if byte-compile-debug
1552 (funcall --displaying-byte-compile-warnings-fn
)
1553 (condition-case error-info
1554 (funcall --displaying-byte-compile-warnings-fn
)
1555 (error (byte-compile-report-error error-info
))))))))
1558 (defun byte-force-recompile (directory)
1559 "Recompile every `.el' file in DIRECTORY that already has a `.elc' file.
1560 Files in subdirectories of DIRECTORY are processed also."
1561 (interactive "DByte force recompile (directory): ")
1562 (byte-recompile-directory directory nil t
))
1565 (defun byte-recompile-directory (directory &optional arg force
)
1566 "Recompile every `.el' file in DIRECTORY that needs recompilation.
1567 This happens when a `.elc' file exists but is older than the `.el' file.
1568 Files in subdirectories of DIRECTORY are processed also.
1570 If the `.elc' file does not exist, normally this function *does not*
1571 compile the corresponding `.el' file. However, if the prefix argument
1572 ARG is 0, that means do compile all those files. A nonzero
1573 ARG means ask the user, for each such `.el' file, whether to
1574 compile it. A nonzero ARG also means ask about each subdirectory
1577 If the third argument FORCE is non-nil, recompile every `.el' file
1578 that already has a `.elc' file."
1579 (interactive "DByte recompile directory: \nP")
1580 (if arg
(setq arg
(prefix-numeric-value arg
)))
1584 (force-mode-line-update))
1585 (with-current-buffer (get-buffer-create byte-compile-log-buffer
)
1586 (setq default-directory
(expand-file-name directory
))
1587 ;; compilation-mode copies value of default-directory.
1588 (unless (eq major-mode
'compilation-mode
)
1590 (let ((directories (list default-directory
))
1591 (default-directory default-directory
)
1597 (displaying-byte-compile-warnings
1599 (setq directory
(car directories
))
1600 (message "Checking %s..." directory
)
1601 (dolist (file (directory-files directory
))
1602 (let ((source (expand-file-name file directory
)))
1603 (if (and (not (member file
'("RCS" "CVS")))
1604 (not (eq ?\.
(aref file
0)))
1605 (file-directory-p source
)
1606 (not (file-symlink-p source
)))
1607 ;; This file is a subdirectory. Handle them differently.
1608 (when (or (null arg
) (eq 0 arg
)
1609 (y-or-n-p (concat "Check " source
"? ")))
1610 (setq directories
(nconc directories
(list source
))))
1611 ;; It is an ordinary file. Decide whether to compile it.
1612 (if (and (string-match emacs-lisp-file-regexp source
)
1613 (file-readable-p source
)
1614 (not (auto-save-file-name-p source
))
1615 (not (string-equal dir-locals-file
1616 (file-name-nondirectory source
))))
1617 (progn (case (byte-recompile-file source force arg
)
1618 (no-byte-compile (setq skip-count
(1+ skip-count
)))
1619 ((t) (setq file-count
(1+ file-count
)))
1620 ((nil) (setq fail-count
(1+ fail-count
))))
1622 (message "Checking %s..." directory
))
1623 (if (not (eq last-dir directory
))
1624 (setq last-dir directory
1625 dir-count
(1+ dir-count
)))
1627 (setq directories
(cdr directories
))))
1628 (message "Done (Total of %d file%s compiled%s%s%s)"
1629 file-count
(if (= file-count
1) "" "s")
1630 (if (> fail-count
0) (format ", %d failed" fail-count
) "")
1631 (if (> skip-count
0) (format ", %d skipped" skip-count
) "")
1633 (format " in %d directories" dir-count
) "")))))
1635 (defvar no-byte-compile nil
1636 "Non-nil to prevent byte-compiling of Emacs Lisp code.
1637 This is normally set in local file variables at the end of the elisp file:
1639 \;; Local Variables:\n;; no-byte-compile: t\n;; End: ") ;Backslash for compile-main.
1640 ;;;###autoload(put 'no-byte-compile 'safe-local-variable 'booleanp)
1642 (defun byte-recompile-file (filename &optional force arg load
)
1643 "Recompile FILENAME file if it needs recompilation.
1644 This happens when its `.elc' file is older than itself.
1646 If the `.elc' file exists and is up-to-date, normally this
1647 function *does not* compile FILENAME. However, if the
1648 prefix argument FORCE is set, that means do compile
1649 FILENAME even if the destination already exists and is
1652 If the `.elc' file does not exist, normally this function *does
1653 not* compile FILENAME. If ARG is 0, that means
1654 compile the file even if it has never been compiled before.
1655 A nonzero ARG means ask the user.
1657 If LOAD is set, `load' the file after compiling.
1659 The value returned is the value returned by `byte-compile-file',
1660 or 'no-byte-compile if the file did not need recompilation."
1662 (let ((file buffer-file-name
)
1666 (derived-mode-p 'emacs-lisp-mode
)
1667 (setq file-name
(file-name-nondirectory file
)
1668 file-dir
(file-name-directory file
)))
1669 (list (read-file-name (if current-prefix-arg
1670 "Byte compile file: "
1671 "Byte recompile file: ")
1672 file-dir file-name nil
)
1673 current-prefix-arg
)))
1674 (let ((dest (byte-compile-dest-file filename
))
1675 ;; Expand now so we get the current buffer's defaults
1676 (filename (expand-file-name filename
)))
1677 (if (if (file-exists-p dest
)
1678 ;; File was already compiled
1679 ;; Compile if forced to, or filename newer
1681 (file-newer-than-file-p filename dest
))
1684 (y-or-n-p (concat "Compile "
1687 (if (and noninteractive
(not byte-compile-verbose
))
1688 (message "Compiling %s..." filename
))
1689 (byte-compile-file filename load
))
1690 (when load
(load filename
))
1694 (defun byte-compile-file (filename &optional load
)
1695 "Compile a file of Lisp code named FILENAME into a file of byte code.
1696 The output file's name is generated by passing FILENAME to the
1697 function `byte-compile-dest-file' (which see).
1698 With prefix arg (noninteractively: 2nd arg), LOAD the file after compiling.
1699 The value is non-nil if there were no errors, nil if errors."
1700 ;; (interactive "fByte compile file: \nP")
1702 (let ((file buffer-file-name
)
1706 (derived-mode-p 'emacs-lisp-mode
)
1707 (setq file-name
(file-name-nondirectory file
)
1708 file-dir
(file-name-directory file
)))
1709 (list (read-file-name (if current-prefix-arg
1710 "Byte compile and load file: "
1711 "Byte compile file: ")
1712 file-dir file-name nil
)
1713 current-prefix-arg
)))
1714 ;; Expand now so we get the current buffer's defaults
1715 (setq filename
(expand-file-name filename
))
1717 ;; If we're compiling a file that's in a buffer and is modified, offer
1718 ;; to save it first.
1720 (let ((b (get-file-buffer (expand-file-name filename
))))
1721 (if (and b
(buffer-modified-p b
)
1722 (y-or-n-p (format "Save buffer %s first? " (buffer-name b
))))
1723 (with-current-buffer b
(save-buffer)))))
1725 ;; Force logging of the file name for each file compiled.
1726 (setq byte-compile-last-logged-file nil
)
1727 (let ((byte-compile-current-file filename
)
1728 (byte-compile-current-group nil
)
1729 (set-auto-coding-for-load t
)
1730 target-file input-buffer output-buffer
1731 byte-compile-dest-file
)
1732 (setq target-file
(byte-compile-dest-file filename
))
1733 (setq byte-compile-dest-file target-file
)
1734 (with-current-buffer
1735 (setq input-buffer
(get-buffer-create " *Compiler Input*"))
1737 (setq buffer-file-coding-system nil
)
1738 ;; Always compile an Emacs Lisp file as multibyte
1739 ;; unless the file itself forces unibyte with -*-coding: raw-text;-*-
1740 (set-buffer-multibyte t
)
1741 (insert-file-contents filename
)
1742 ;; Mimic the way after-insert-file-set-coding can make the
1743 ;; buffer unibyte when visiting this file.
1744 (when (or (eq last-coding-system-used
'no-conversion
)
1745 (eq (coding-system-type last-coding-system-used
) 5))
1746 ;; For coding systems no-conversion and raw-text...,
1747 ;; edit the buffer as unibyte.
1748 (set-buffer-multibyte nil
))
1749 ;; Run hooks including the uncompression hook.
1750 ;; If they change the file name, then change it for the output also.
1751 (letf ((buffer-file-name filename
)
1752 ((default-value 'major-mode
) 'emacs-lisp-mode
)
1753 ;; Ignore unsafe local variables.
1754 ;; We only care about a few of them for our purposes.
1755 (enable-local-variables :safe
)
1756 (enable-local-eval nil
))
1757 ;; Arg of t means don't alter enable-local-variables.
1759 (setq filename buffer-file-name
))
1760 ;; Set the default directory, in case an eval-when-compile uses it.
1761 (setq default-directory
(file-name-directory filename
)))
1762 ;; Check if the file's local variables explicitly specify not to
1763 ;; compile this file.
1764 (if (with-current-buffer input-buffer no-byte-compile
)
1766 ;; (message "%s not compiled because of `no-byte-compile: %s'"
1767 ;; (file-relative-name filename)
1768 ;; (with-current-buffer input-buffer no-byte-compile))
1769 (when (file-exists-p target-file
)
1770 (message "%s deleted because of `no-byte-compile: %s'"
1771 (file-relative-name target-file
)
1772 (buffer-local-value 'no-byte-compile input-buffer
))
1773 (condition-case nil
(delete-file target-file
) (error nil
)))
1774 ;; We successfully didn't compile this file.
1776 (when byte-compile-verbose
1777 (message "Compiling %s..." filename
))
1778 (setq byte-compiler-error-flag nil
)
1779 ;; It is important that input-buffer not be current at this call,
1780 ;; so that the value of point set in input-buffer
1781 ;; within byte-compile-from-buffer lingers in that buffer.
1783 (save-current-buffer
1784 (byte-compile-from-buffer input-buffer
)))
1785 (if byte-compiler-error-flag
1787 (when byte-compile-verbose
1788 (message "Compiling %s...done" filename
))
1789 (kill-buffer input-buffer
)
1790 (with-current-buffer output-buffer
1791 (goto-char (point-max))
1792 (insert "\n") ; aaah, unix.
1793 (if (file-writable-p target-file
)
1794 ;; We must disable any code conversion here.
1795 (let* ((coding-system-for-write 'no-conversion
)
1796 ;; Write to a tempfile so that if another Emacs
1797 ;; process is trying to load target-file (eg in a
1798 ;; parallel bootstrap), it does not risk getting a
1799 ;; half-finished file. (Bug#4196)
1800 (tempfile (make-temp-name target-file
))
1802 (cons (lambda () (ignore-errors (delete-file tempfile
)))
1804 (if (memq system-type
'(ms-dos 'windows-nt
))
1805 (setq buffer-file-type t
))
1806 (write-region (point-min) (point-max) tempfile nil
1)
1807 ;; This has the intentional side effect that any
1808 ;; hard-links to target-file continue to
1809 ;; point to the old file (this makes it possible
1810 ;; for installed files to share disk space with
1811 ;; the build tree, without causing problems when
1812 ;; emacs-lisp files in the build tree are
1813 ;; recompiled). Previously this was accomplished by
1814 ;; deleting target-file before writing it.
1815 (rename-file tempfile target-file t
)
1816 (message "Wrote %s" target-file
))
1817 ;; This is just to give a better error message than write-region
1819 (list "Opening output file"
1820 (if (file-exists-p target-file
)
1821 "cannot overwrite file"
1822 "directory not writable or nonexistent")
1824 (kill-buffer (current-buffer)))
1825 (if (and byte-compile-generate-call-tree
1826 (or (eq t byte-compile-generate-call-tree
)
1827 (y-or-n-p (format "Report call tree for %s? "
1830 (display-call-tree filename
)))
1835 ;;; compiling a single function
1837 (defun compile-defun (&optional arg
)
1838 "Compile and evaluate the current top-level form.
1839 Print the result in the echo area.
1840 With argument ARG, insert value in current buffer after the form."
1844 (beginning-of-defun)
1845 (let* ((byte-compile-current-file nil
)
1846 (byte-compile-current-buffer (current-buffer))
1847 (byte-compile-read-position (point))
1848 (byte-compile-last-position byte-compile-read-position
)
1849 (byte-compile-last-warned-form 'nothing
)
1851 (let ((read-with-symbol-positions (current-buffer))
1852 (read-symbol-positions-list nil
))
1853 (displaying-byte-compile-warnings
1854 (byte-compile-sexp (read (current-buffer)))))
1857 (message "Compiling from buffer... done.")
1858 (prin1 value
(current-buffer))
1860 ((message "%s" (prin1-to-string value
)))))))
1862 ;; Dynamically bound in byte-compile-from-buffer.
1863 ;; NB also used in cl.el and cl-macs.el.
1864 (defvar byte-compile-outbuffer
)
1866 (defun byte-compile-from-buffer (inbuffer)
1867 (let (byte-compile-outbuffer
1868 (byte-compile-current-buffer inbuffer
)
1869 (byte-compile-read-position nil
)
1870 (byte-compile-last-position nil
)
1871 ;; Prevent truncation of flonums and lists as we read and print them
1872 (float-output-format nil
)
1873 (case-fold-search nil
)
1876 ;; Prevent edebug from interfering when we compile
1877 ;; and put the output into a file.
1878 ;; (edebug-all-defs nil)
1879 ;; (edebug-all-forms nil)
1880 ;; Simulate entry to byte-compile-top-level
1881 (byte-compile-constants nil
)
1882 (byte-compile-variables nil
)
1883 (byte-compile-tag-number 0)
1884 (byte-compile-depth 0)
1885 (byte-compile-maxdepth 0)
1886 (byte-compile-output nil
)
1887 ;; This allows us to get the positions of symbols read; it's
1888 ;; new in Emacs 22.1.
1889 (read-with-symbol-positions inbuffer
)
1890 (read-symbol-positions-list nil
)
1891 ;; #### This is bound in b-c-close-variables.
1892 ;; (byte-compile-warnings byte-compile-warnings)
1894 (byte-compile-close-variables
1895 (with-current-buffer
1896 (setq byte-compile-outbuffer
(get-buffer-create " *Compiler Output*"))
1897 (set-buffer-multibyte t
)
1899 ;; (emacs-lisp-mode)
1900 (setq case-fold-search nil
))
1901 (displaying-byte-compile-warnings
1902 (with-current-buffer inbuffer
1903 (and byte-compile-current-file
1904 (byte-compile-insert-header byte-compile-current-file
1905 byte-compile-outbuffer
))
1906 (goto-char (point-min))
1907 ;; Should we always do this? When calling multiple files, it
1908 ;; would be useful to delay this warning until all have been
1909 ;; compiled. A: Yes! b-c-u-f might contain dross from a
1910 ;; previous byte-compile.
1911 (setq byte-compile-unresolved-functions nil
)
1913 ;; Compile the forms from the input buffer.
1915 (while (progn (skip-chars-forward " \t\n\^l")
1919 (setq byte-compile-read-position
(point)
1920 byte-compile-last-position byte-compile-read-position
)
1921 (let* ((old-style-backquotes nil
)
1922 (form (read inbuffer
)))
1923 ;; Warn about the use of old-style backquotes.
1924 (when old-style-backquotes
1925 (byte-compile-warn "!! The file uses old-style backquotes !!
1926 This functionality has been obsolete for more than 10 years already
1927 and will be removed soon. See (elisp)Backquote in the manual."))
1928 (byte-compile-toplevel-file-form form
)))
1929 ;; Compile pending forms at end of file.
1930 (byte-compile-flush-pending)
1931 ;; Make warnings about unresolved functions
1932 ;; give the end of the file as their position.
1933 (setq byte-compile-last-position
(point-max))
1934 (byte-compile-warn-about-unresolved-functions))
1935 ;; Fix up the header at the front of the output
1936 ;; if the buffer contains multibyte characters.
1937 (and byte-compile-current-file
1938 (with-current-buffer byte-compile-outbuffer
1939 (byte-compile-fix-header byte-compile-current-file
)))))
1940 byte-compile-outbuffer
))
1942 (defun byte-compile-fix-header (filename)
1943 "If the current buffer has any multibyte characters, insert a version test."
1944 (when (< (point-max) (position-bytes (point-max)))
1945 (goto-char (point-min))
1946 ;; Find the comment that describes the version condition.
1947 (search-forward "\n;;; This file uses")
1948 (narrow-to-region (line-beginning-position) (point-max))
1949 ;; Find the first line of ballast semicolons.
1950 (search-forward ";;;;;;;;;;")
1952 (narrow-to-region (point-min) (point))
1953 (let ((old-header-end (point))
1954 (minimum-version "23")
1956 (delete-region (point-min) (point-max))
1958 ";;; This file contains utf-8 non-ASCII characters,\n"
1959 ";;; and so cannot be loaded into Emacs 22 or earlier.\n"
1960 ;; Have to check if emacs-version is bound so that this works
1961 ;; in files loaded early in loadup.el.
1962 "(and (boundp 'emacs-version)\n"
1963 ;; If there is a name at the end of emacs-version,
1964 ;; don't try to check the version number.
1965 " (< (aref emacs-version (1- (length emacs-version))) ?A)\n"
1966 (format " (string-lessp emacs-version \"%s\")\n" minimum-version
)
1968 ;; prin1-to-string is used to quote backslashes.
1969 (substring (prin1-to-string (file-name-nondirectory filename
))
1971 (format "' was compiled for Emacs %s or later\"))\n\n"
1973 ;; Now compensate for any change in size, to make sure all
1974 ;; positions in the file remain valid.
1975 (setq delta
(- (point-max) old-header-end
))
1976 (goto-char (point-max))
1978 (delete-char delta
))))
1980 (defun byte-compile-insert-header (filename outbuffer
)
1981 "Insert a header at the start of OUTBUFFER.
1982 Call from the source buffer."
1983 (let ((dynamic-docstrings byte-compile-dynamic-docstrings
)
1984 (dynamic byte-compile-dynamic
)
1985 (optimize byte-optimize
))
1986 (with-current-buffer outbuffer
1987 (goto-char (point-min))
1988 ;; The magic number of .elc files is ";ELC", or 0x3B454C43. After
1989 ;; that is the file-format version number (18, 19, 20, or 23) as a
1990 ;; byte, followed by some nulls. The primary motivation for doing
1991 ;; this is to get some binary characters up in the first line of
1992 ;; the file so that `diff' will simply say "Binary files differ"
1993 ;; instead of actually doing a diff of two .elc files. An extra
1994 ;; benefit is that you can add this to /etc/magic:
1995 ;; 0 string ;ELC GNU Emacs Lisp compiled file,
1996 ;; >4 byte x version %d
1998 ";ELC" 23 "\000\000\000\n"
2000 (or (and (boundp 'user-mail-address
) user-mail-address
)
2001 (concat (user-login-name) "@" (system-name)))
2002 " on " (current-time-string) "\n"
2003 ";;; from file " filename
"\n"
2004 ";;; in Emacs version " emacs-version
"\n"
2007 ((eq optimize
'source
) " source-level optimization only")
2008 ((eq optimize
'byte
) " byte-level optimization only")
2009 (optimize " all optimizations")
2010 (t "out optimization"))
2012 (if dynamic
";;; Function definitions are lazy-loaded.\n"
2014 "\n;;; This file uses "
2015 (if dynamic-docstrings
2016 "dynamic docstrings, first added in Emacs 19.29"
2017 "opcodes that do not exist in Emacs 18")
2019 ;; Note that byte-compile-fix-header may change this.
2020 ";;; This file does not contain utf-8 non-ASCII characters,\n"
2021 ";;; and so can be loaded in Emacs versions earlier than 23.\n\n"
2022 ;; Insert semicolons as ballast, so that byte-compile-fix-header
2023 ;; can delete them so as to keep the buffer positions
2024 ;; constant for the actual compiled code.
2025 ";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;\n"
2026 ";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;\n\n"))))
2028 (defun byte-compile-output-file-form (form)
2029 ;; writes the given form to the output buffer, being careful of docstrings
2030 ;; in defun, defmacro, defvar, defvaralias, defconst, autoload and
2031 ;; custom-declare-variable because make-docfile is so amazingly stupid.
2032 ;; defalias calls are output directly by byte-compile-file-form-defmumble;
2033 ;; it does not pay to first build the defalias in defmumble and then parse
2035 (if (and (memq (car-safe form
) '(defun defmacro defvar defvaralias defconst
2036 autoload custom-declare-variable
))
2037 (stringp (nth 3 form
)))
2038 (byte-compile-output-docform nil nil
'("\n(" 3 ")") form nil
2040 '(defvaralias autoload
2041 custom-declare-variable
)))
2042 (let ((print-escape-newlines t
)
2047 (print-circle ; handle circular data structures
2048 (not byte-compile-disable-print-circle
)))
2049 (princ "\n" byte-compile-outbuffer
)
2050 (prin1 form byte-compile-outbuffer
)
2053 (defvar print-gensym-alist
) ;Used before print-circle existed.
2054 (defvar byte-compile--for-effect
)
2056 (defun byte-compile-output-docform (preface name info form specindex quoted
)
2057 "Print a form with a doc string. INFO is (prefix doc-index postfix).
2058 If PREFACE and NAME are non-nil, print them too,
2059 before INFO and the FORM but after the doc string itself.
2060 If SPECINDEX is non-nil, it is the index in FORM
2061 of the function bytecode string. In that case,
2062 we output that argument and the following argument
2063 \(the constants vector) together, for lazy loading.
2064 QUOTED says that we have to put a quote before the
2065 list that represents a doc string reference.
2066 `defvaralias', `autoload' and `custom-declare-variable' need that."
2067 ;; We need to examine byte-compile-dynamic-docstrings
2068 ;; in the input buffer (now current), not in the output buffer.
2069 (let ((dynamic-docstrings byte-compile-dynamic-docstrings
))
2070 (with-current-buffer byte-compile-outbuffer
2073 ;; Insert the doc string, and make it a comment with #@LENGTH.
2074 (and (>= (nth 1 info
) 0)
2077 ;; Make the doc string start at beginning of line
2078 ;; for make-docfile's sake.
2081 (byte-compile-output-as-comment
2082 (nth (nth 1 info
) form
) nil
))
2083 (setq position
(- (position-bytes position
) (point-min) -
1))
2084 ;; If the doc string starts with * (a user variable),
2086 (if (and (stringp (nth (nth 1 info
) form
))
2087 (> (length (nth (nth 1 info
) form
)) 0)
2088 (eq (aref (nth (nth 1 info
) form
) 0) ?
*))
2089 (setq position
(- position
)))))
2094 (prin1 name byte-compile-outbuffer
)))
2096 (let ((print-escape-newlines t
)
2098 ;; For compatibility with code before print-circle,
2099 ;; use a cons cell to say that we want
2100 ;; print-gensym-alist not to be cleared
2101 ;; between calls to print functions.
2103 (print-circle ; handle circular data structures
2104 (not byte-compile-disable-print-circle
))
2105 print-gensym-alist
; was used before print-circle existed.
2106 (print-continuous-numbering t
)
2109 (prin1 (car form
) byte-compile-outbuffer
)
2110 (while (setq form
(cdr form
))
2111 (setq index
(1+ index
))
2113 (cond ((and (numberp specindex
) (= index specindex
)
2114 ;; Don't handle the definition dynamically
2115 ;; if it refers (or might refer)
2116 ;; to objects already output
2117 ;; (for instance, gensyms in the arg list).
2119 (when (hash-table-p print-number-table
)
2120 (maphash (lambda (_k v
) (if v
(setq non-nil t
)))
2121 print-number-table
))
2123 ;; Output the byte code and constants specially
2124 ;; for lazy dynamic loading.
2126 (byte-compile-output-as-comment
2127 (cons (car form
) (nth 1 form
))
2129 (setq position
(- (position-bytes position
)
2131 (princ (format "(#$ . %d) nil" position
)
2132 byte-compile-outbuffer
)
2133 (setq form
(cdr form
))
2134 (setq index
(1+ index
))))
2135 ((= index
(nth 1 info
))
2137 (princ (format (if quoted
"'(#$ . %d)" "(#$ . %d)")
2139 byte-compile-outbuffer
)
2140 (let ((print-escape-newlines nil
))
2141 (goto-char (prog1 (1+ (point))
2142 (prin1 (car form
) byte-compile-outbuffer
)))
2144 (goto-char (point-max)))))
2146 (prin1 (car form
) byte-compile-outbuffer
)))))
2147 (insert (nth 2 info
)))))
2150 (defun byte-compile-keep-pending (form &optional handler
)
2151 (if (memq byte-optimize
'(t source
))
2152 (setq form
(byte-optimize-form form t
)))
2154 (let ((byte-compile--for-effect t
))
2155 ;; To avoid consing up monstrously large forms at load time, we split
2156 ;; the output regularly.
2157 (and (memq (car-safe form
) '(fset defalias
))
2158 (nthcdr 300 byte-compile-output
)
2159 (byte-compile-flush-pending))
2160 (funcall handler form
)
2161 (if byte-compile--for-effect
2162 (byte-compile-discard)))
2163 (byte-compile-form form t
))
2166 (defun byte-compile-flush-pending ()
2167 (if byte-compile-output
2168 (let ((form (byte-compile-out-toplevel t
'file
)))
2169 (cond ((eq (car-safe form
) 'progn
)
2170 (mapc 'byte-compile-output-file-form
(cdr form
)))
2172 (byte-compile-output-file-form form
)))
2173 (setq byte-compile-constants nil
2174 byte-compile-variables nil
2175 byte-compile-depth
0
2176 byte-compile-maxdepth
0
2177 byte-compile-output nil
))))
2179 (defun byte-compile-preprocess (form &optional _for-effect
)
2180 (setq form
(macroexpand-all form byte-compile-macro-environment
))
2181 ;; FIXME: We should run byte-optimize-form here, but it currently does not
2182 ;; recurse through all the code, so we'd have to fix this first.
2183 ;; Maybe a good fix would be to merge byte-optimize-form into
2185 ;; (if (memq byte-optimize '(t source))
2186 ;; (setq form (byte-optimize-form form for-effect)))
2188 (cconv-closure-convert form
)
2191 ;; byte-hunk-handlers cannot call this!
2192 (defun byte-compile-toplevel-file-form (form)
2193 (let ((byte-compile-current-form nil
)) ; close over this for warnings.
2194 (byte-compile-file-form (byte-compile-preprocess form t
))))
2196 ;; byte-hunk-handlers can call this.
2197 (defun byte-compile-file-form (form)
2199 (cond ((and (consp form
)
2200 (symbolp (car form
))
2201 (setq handler
(get (car form
) 'byte-hunk-handler
)))
2202 (cond ((setq form
(funcall handler form
))
2203 (byte-compile-flush-pending)
2204 (byte-compile-output-file-form form
))))
2206 (byte-compile-keep-pending form
)))))
2208 ;; Functions and variables with doc strings must be output separately,
2209 ;; so make-docfile can recognise them. Most other things can be output
2212 (put 'autoload
'byte-hunk-handler
'byte-compile-file-form-autoload
)
2213 (defun byte-compile-file-form-autoload (form)
2214 (and (let ((form form
))
2215 (while (if (setq form
(cdr form
)) (byte-compile-constp (car form
))))
2216 (null form
)) ;Constants only
2217 (eval (nth 5 form
)) ;Macro
2218 (eval form
)) ;Define the autoload.
2219 ;; Avoid undefined function warnings for the autoload.
2220 (when (and (consp (nth 1 form
))
2221 (eq (car (nth 1 form
)) 'quote
)
2222 (consp (cdr (nth 1 form
)))
2223 (symbolp (nth 1 (nth 1 form
))))
2224 (push (cons (nth 1 (nth 1 form
))
2225 (cons 'autoload
(cdr (cdr form
))))
2226 byte-compile-function-environment
)
2227 ;; If an autoload occurs _before_ the first call to a function,
2228 ;; byte-compile-callargs-warn does not add an entry to
2229 ;; byte-compile-unresolved-functions. Here we mimic the logic
2230 ;; of byte-compile-callargs-warn so as not to warn if the
2231 ;; autoload comes _after_ the function call.
2232 ;; Alternatively, similar logic could go in
2233 ;; byte-compile-warn-about-unresolved-functions.
2234 (or (memq (nth 1 (nth 1 form
)) byte-compile-noruntime-functions
)
2235 (setq byte-compile-unresolved-functions
2236 (delq (assq (nth 1 (nth 1 form
))
2237 byte-compile-unresolved-functions
)
2238 byte-compile-unresolved-functions
))))
2239 (if (stringp (nth 3 form
))
2241 ;; No doc string, so we can compile this as a normal form.
2242 (byte-compile-keep-pending form
'byte-compile-normal-call
)))
2244 (put 'defvar
'byte-hunk-handler
'byte-compile-file-form-defvar
)
2245 (put 'defconst
'byte-hunk-handler
'byte-compile-file-form-defvar
)
2246 (defun byte-compile-file-form-defvar (form)
2247 (if (null (nth 3 form
))
2248 ;; Since there is no doc string, we can compile this as a normal form,
2249 ;; and not do a file-boundary.
2250 (byte-compile-keep-pending form
)
2251 (when (and (symbolp (nth 1 form
))
2252 (not (string-match "[-*/:$]" (symbol-name (nth 1 form
))))
2253 (byte-compile-warning-enabled-p 'lexical
))
2254 (byte-compile-warn "global/dynamic var `%s' lacks a prefix"
2256 (push (nth 1 form
) byte-compile-bound-variables
)
2257 (if (eq (car form
) 'defconst
)
2258 (push (nth 1 form
) byte-compile-const-variables
))
2259 (cond ((consp (nth 2 form
))
2260 (setq form
(copy-sequence form
))
2261 (setcar (cdr (cdr form
))
2262 (byte-compile-top-level (nth 2 form
) nil
'file
))))
2265 (put 'define-abbrev-table
'byte-hunk-handler
2266 'byte-compile-file-form-define-abbrev-table
)
2267 (defun byte-compile-file-form-define-abbrev-table (form)
2268 (if (eq 'quote
(car-safe (car-safe (cdr form
))))
2269 (push (car-safe (cdr (cadr form
))) byte-compile-bound-variables
))
2270 (byte-compile-keep-pending form
))
2272 (put 'custom-declare-variable
'byte-hunk-handler
2273 'byte-compile-file-form-custom-declare-variable
)
2274 (defun byte-compile-file-form-custom-declare-variable (form)
2275 (when (byte-compile-warning-enabled-p 'callargs
)
2276 (byte-compile-nogroup-warn form
))
2277 (push (nth 1 (nth 1 form
)) byte-compile-bound-variables
)
2278 ;; Don't compile the expression because it may be displayed to the user.
2279 ;; (when (eq (car-safe (nth 2 form)) 'quote)
2280 ;; ;; (nth 2 form) is meant to evaluate to an expression, so if we have the
2281 ;; ;; final value already, we can byte-compile it.
2282 ;; (setcar (cdr (nth 2 form))
2283 ;; (byte-compile-top-level (cadr (nth 2 form)) nil 'file)))
2284 (let ((tail (nthcdr 4 form
)))
2286 (unless (keywordp (car tail
)) ;No point optimizing keywords.
2287 ;; Compile the keyword arguments.
2288 (setcar tail
(byte-compile-top-level (car tail
) nil
'file
)))
2289 (setq tail
(cdr tail
))))
2292 (put 'require
'byte-hunk-handler
'byte-compile-file-form-require
)
2293 (defun byte-compile-file-form-require (form)
2294 (let ((args (mapcar 'eval
(cdr form
)))
2295 (hist-orig load-history
)
2297 (apply 'require args
)
2298 (when (byte-compile-warning-enabled-p 'cl-functions
)
2299 ;; Detect (require 'cl) in a way that works even if cl is already loaded.
2300 (if (member (car args
) '("cl" cl
))
2302 (byte-compile-warn "cl package required at runtime")
2303 (byte-compile-disable-warning 'cl-functions
))
2304 ;; We may have required something that causes cl to be loaded, eg
2305 ;; the uncompiled version of a file that requires cl when compiling.
2306 (setq hist-new load-history
)
2307 (while (and (not byte-compile-cl-functions
)
2308 hist-new
(not (eq hist-new hist-orig
)))
2309 (and (byte-compile-cl-file-p (car (pop hist-new
)))
2310 (byte-compile-find-cl-functions))))))
2311 (byte-compile-keep-pending form
'byte-compile-normal-call
))
2313 (put 'progn
'byte-hunk-handler
'byte-compile-file-form-progn
)
2314 (put 'prog1
'byte-hunk-handler
'byte-compile-file-form-progn
)
2315 (put 'prog2
'byte-hunk-handler
'byte-compile-file-form-progn
)
2316 (defun byte-compile-file-form-progn (form)
2317 (mapc 'byte-compile-file-form
(cdr form
))
2318 ;; Return nil so the forms are not output twice.
2321 (put 'with-no-warnings
'byte-hunk-handler
2322 'byte-compile-file-form-with-no-warnings
)
2323 (defun byte-compile-file-form-with-no-warnings (form)
2324 ;; cf byte-compile-file-form-progn.
2325 (let (byte-compile-warnings)
2326 (mapc 'byte-compile-file-form
(cdr form
))
2329 ;; This handler is not necessary, but it makes the output from dont-compile
2330 ;; and similar macros cleaner.
2331 (put 'eval
'byte-hunk-handler
'byte-compile-file-form-eval
)
2332 (defun byte-compile-file-form-eval (form)
2333 (if (eq (car-safe (nth 1 form
)) 'quote
)
2334 (nth 1 (nth 1 form
))
2335 (byte-compile-keep-pending form
)))
2337 (put 'defun
'byte-hunk-handler
'byte-compile-file-form-defun
)
2338 (defun byte-compile-file-form-defun (form)
2339 (byte-compile-file-form-defmumble form nil
))
2341 (put 'defmacro
'byte-hunk-handler
'byte-compile-file-form-defmacro
)
2342 (defun byte-compile-file-form-defmacro (form)
2343 (byte-compile-file-form-defmumble form t
))
2345 (defun byte-compile-defmacro-declaration (form)
2346 "Generate code for declarations in macro definitions.
2347 Remove declarations from the body of the macro definition
2349 (let ((tail (nthcdr 2 form
))
2351 (when (stringp (car (cdr tail
)))
2352 (setq tail
(cdr tail
)))
2353 (while (and (consp (car (cdr tail
)))
2354 (eq (car (car (cdr tail
))) 'declare
))
2355 (let ((declaration (car (cdr tail
))))
2356 (setcdr tail
(cdr (cdr tail
)))
2357 (push `(if macro-declaration-function
2358 (funcall macro-declaration-function
2359 ',(car (cdr form
)) ',declaration
))
2363 (defun byte-compile-file-form-defmumble (form macrop
)
2364 (let* ((name (car (cdr form
)))
2365 (this-kind (if macrop
'byte-compile-macro-environment
2366 'byte-compile-function-environment
))
2367 (that-kind (if macrop
'byte-compile-function-environment
2368 'byte-compile-macro-environment
))
2369 (this-one (assq name
(symbol-value this-kind
)))
2370 (that-one (assq name
(symbol-value that-kind
)))
2371 (byte-compile-free-references nil
)
2372 (byte-compile-free-assignments nil
))
2373 (byte-compile-set-symbol-position name
)
2374 ;; When a function or macro is defined, add it to the call tree so that
2375 ;; we can tell when functions are not used.
2376 (if byte-compile-generate-call-tree
2377 (or (assq name byte-compile-call-tree
)
2378 (setq byte-compile-call-tree
2379 (cons (list name nil nil
) byte-compile-call-tree
))))
2381 (setq byte-compile-current-form name
) ; for warnings
2382 (if (byte-compile-warning-enabled-p 'redefine
)
2383 (byte-compile-arglist-warn form macrop
))
2384 (if byte-compile-verbose
2385 (message "Compiling %s... (%s)"
2386 (or byte-compile-current-file
"") (nth 1 form
)))
2388 (if (and (byte-compile-warning-enabled-p 'redefine
)
2389 ;; don't warn when compiling the stubs in byte-run...
2390 (not (assq (nth 1 form
)
2391 byte-compile-initial-macro-environment
)))
2393 "`%s' defined multiple times, as both function and macro"
2395 (setcdr that-one nil
))
2397 (when (and (byte-compile-warning-enabled-p 'redefine
)
2398 ;; hack: don't warn when compiling the magic internal
2399 ;; byte-compiler macros in byte-run.el...
2400 (not (assq (nth 1 form
)
2401 byte-compile-initial-macro-environment
)))
2402 (byte-compile-warn "%s `%s' defined multiple times in this file"
2403 (if macrop
"macro" "function")
2405 ((and (fboundp name
)
2406 (eq (car-safe (symbol-function name
))
2407 (if macrop
'lambda
'macro
)))
2408 (when (byte-compile-warning-enabled-p 'redefine
)
2409 (byte-compile-warn "%s `%s' being redefined as a %s"
2410 (if macrop
"function" "macro")
2412 (if macrop
"macro" "function")))
2413 ;; shadow existing definition
2415 (cons (cons name nil
)
2416 (symbol-value this-kind
))))
2418 (let ((body (nthcdr 3 form
)))
2419 (when (and (stringp (car body
))
2420 (symbolp (car-safe (cdr-safe body
)))
2421 (car-safe (cdr-safe body
))
2422 (stringp (car-safe (cdr-safe (cdr-safe body
)))))
2423 (byte-compile-set-symbol-position (nth 1 form
))
2424 (byte-compile-warn "probable `\"' without `\\' in doc string of %s"
2427 ;; Generate code for declarations in macro definitions.
2428 ;; Remove declarations from the body of the macro definition.
2430 (dolist (decl (byte-compile-defmacro-declaration form
))
2431 (prin1 decl byte-compile-outbuffer
)))
2433 (let* ((new-one (byte-compile-lambda (nthcdr 2 form
) t
))
2434 (code (byte-compile-byte-code-maker new-one
)))
2436 (setcdr this-one new-one
)
2438 (cons (cons name new-one
)
2439 (symbol-value this-kind
))))
2440 (if (and (stringp (nth 3 form
))
2441 (eq 'quote
(car-safe code
))
2442 (eq 'lambda
(car-safe (nth 1 code
))))
2444 (cons name
(cdr (nth 1 code
))))
2445 (byte-compile-flush-pending)
2446 (if (not (stringp (nth 3 form
)))
2447 ;; No doc string. Provide -1 as the "doc string index"
2448 ;; so that no element will be treated as a doc string.
2449 (byte-compile-output-docform
2453 (if macrop
'(" '(macro . #[" -
1 "])") '(" #[" -
1 "]")))
2454 ((eq (car code
) 'quote
)
2456 (if macrop
'(" '(macro " -
1 ")") '(" '(" -
1 ")")))
2457 ((if macrop
'(" (cons 'macro (" -
1 "))") '(" (" -
1 ")"))))
2459 (and (atom code
) byte-compile-dynamic
2462 ;; Output the form by hand, that's much simpler than having
2463 ;; b-c-output-file-form analyze the defalias.
2464 (byte-compile-output-docform
2468 (if macrop
'(" '(macro . #[" 4 "])") '(" #[" 4 "]")))
2469 ((eq (car code
) 'quote
)
2471 (if macrop
'(" '(macro " 2 ")") '(" '(" 2 ")")))
2472 ((if macrop
'(" (cons 'macro (" 5 "))") '(" (" 5 ")"))))
2474 (and (atom code
) byte-compile-dynamic
2477 (princ ")" byte-compile-outbuffer
)
2480 ;; Print Lisp object EXP in the output file, inside a comment,
2481 ;; and return the file position it will have.
2482 ;; If QUOTED is non-nil, print with quoting; otherwise, print without quoting.
2483 (defun byte-compile-output-as-comment (exp quoted
)
2484 (let ((position (point)))
2485 (with-current-buffer byte-compile-outbuffer
2487 ;; Insert EXP, and make it a comment with #@LENGTH.
2490 (prin1 exp byte-compile-outbuffer
)
2491 (princ exp byte-compile-outbuffer
))
2492 (goto-char position
)
2493 ;; Quote certain special characters as needed.
2494 ;; get_doc_string in doc.c does the unquoting.
2495 (while (search-forward "\^A" nil t
)
2496 (replace-match "\^A\^A" t t
))
2497 (goto-char position
)
2498 (while (search-forward "\000" nil t
)
2499 (replace-match "\^A0" t t
))
2500 (goto-char position
)
2501 (while (search-forward "\037" nil t
)
2502 (replace-match "\^A_" t t
))
2503 (goto-char (point-max))
2505 (goto-char position
)
2506 (insert "#@" (format "%d" (- (position-bytes (point-max))
2507 (position-bytes position
))))
2509 ;; Save the file position of the object.
2510 ;; Note we should add 1 to skip the space
2511 ;; that we inserted before the actual doc string,
2512 ;; and subtract 1 to convert from an 1-origin Emacs position
2513 ;; to a file position; they cancel.
2514 (setq position
(point))
2515 (goto-char (point-max)))
2521 (defun byte-compile (form)
2522 "If FORM is a symbol, byte-compile its function definition.
2523 If FORM is a lambda or a macro, byte-compile it as a function."
2524 (displaying-byte-compile-warnings
2525 (byte-compile-close-variables
2526 (let* ((fun (if (symbolp form
)
2527 (and (fboundp form
) (symbol-function form
))
2529 (macro (eq (car-safe fun
) 'macro
)))
2531 (setq fun
(cdr fun
)))
2532 (cond ((eq (car-safe fun
) 'lambda
)
2534 (setq fun
(byte-compile-preprocess fun
))
2535 ;; Get rid of the `function' quote added by the `lambda' macro.
2536 (if (eq (car-safe fun
) 'function
) (setq fun
(cadr fun
)))
2538 (cons 'macro
(byte-compile-lambda fun
))
2539 (byte-compile-lambda fun
)))
2544 (defun byte-compile-sexp (sexp)
2545 "Compile and return SEXP."
2546 (displaying-byte-compile-warnings
2547 (byte-compile-close-variables
2548 (byte-compile-top-level (byte-compile-preprocess sexp
)))))
2550 ;; Given a function made by byte-compile-lambda, make a form which produces it.
2551 (defun byte-compile-byte-code-maker (fun)
2553 ;; ## atom is faster than compiled-func-p.
2554 ((atom fun
) ; compiled function.
2555 ;; generate-emacs19-bytecodes must be on, otherwise byte-compile-lambda
2556 ;; would have produced a lambda.
2558 ;; b-c-lambda didn't produce a compiled-function, so it's either a trivial
2559 ;; function, or this is Emacs 18, or generate-emacs19-bytecodes is off.
2561 ;; FIXME: can this happen?
2562 (if (and (setq tmp
(assq 'byte-code
(cdr-safe (cdr fun
))))
2563 (null (cdr (memq tmp fun
))))
2564 ;; Generate a make-byte-code call.
2565 (let* ((interactive (assq 'interactive
(cdr (cdr fun
)))))
2566 (nconc (list 'make-byte-code
2567 (list 'quote
(nth 1 fun
)) ;arglist
2571 (cond ((stringp (nth 2 fun
))
2572 (list (nth 2 fun
))) ;doc
2576 (list (if (or (null (nth 1 interactive
))
2577 (stringp (nth 1 interactive
)))
2579 ;; Interactive spec is a list or a variable
2580 ;; (if it is correct).
2581 (list 'quote
(nth 1 interactive
))))))))
2582 ;; a non-compiled function (probably trivial)
2583 (list 'quote fun
))))))
2585 ;; Turn a function into an ordinary lambda. Needed for v18 files.
2586 (defun byte-compile-byte-code-unmake (function) ;FIXME: what is it?
2587 (if (consp function
)
2588 function
;;It already is a lambda.
2589 (setq function
(append function nil
)) ; turn it into a list
2590 (nconc (list 'lambda
(nth 0 function
))
2591 (and (nth 4 function
) (list (nth 4 function
)))
2592 (if (nthcdr 5 function
)
2593 (list (cons 'interactive
(if (nth 5 function
)
2594 (nthcdr 5 function
)))))
2595 (list (list 'byte-code
2596 (nth 1 function
) (nth 2 function
)
2597 (nth 3 function
))))))
2600 (defun byte-compile-check-lambda-list (list)
2601 "Check lambda-list LIST for errors."
2604 (let ((arg (car list
)))
2606 (byte-compile-set-symbol-position arg
))
2607 (cond ((or (not (symbolp arg
))
2608 (byte-compile-const-symbol-p arg t
))
2609 (error "Invalid lambda variable %s" arg
))
2612 (error "&rest without variable name"))
2614 (error "Garbage following &rest VAR in lambda-list")))
2615 ((eq arg
'&optional
)
2617 (error "Variable name missing after &optional")))
2619 (byte-compile-warn "repeated variable %s in lambda-list" arg
))
2622 (setq list
(cdr list
)))))
2625 (defun byte-compile-arglist-vars (arglist)
2626 "Return a list of the variables in the lambda argument list ARGLIST."
2627 (remq '&rest
(remq '&optional arglist
)))
2629 (defun byte-compile-make-lambda-lexenv (form)
2630 "Return a new lexical environment for a lambda expression FORM."
2631 ;; See if this is a closure or not
2632 (let ((args (byte-compile-arglist-vars (cadr form
))))
2634 ;; Fill in the initial stack contents
2636 ;; Add entries for each argument
2638 (push (cons arg stackpos
) lexenv
)
2639 (setq stackpos
(1+ stackpos
)))
2640 ;; Return the new lexical environment
2643 (defun byte-compile-make-args-desc (arglist)
2646 (while (and arglist
(not (memq (car arglist
) '(&optional
&rest
))))
2647 (setq mandatory
(1+ mandatory
))
2648 (setq arglist
(cdr arglist
)))
2649 (setq nonrest mandatory
)
2650 (when (eq (car arglist
) '&optional
)
2651 (setq arglist
(cdr arglist
))
2652 (while (and arglist
(not (eq (car arglist
) '&rest
)))
2653 (setq nonrest
(1+ nonrest
))
2654 (setq arglist
(cdr arglist
))))
2657 (if (> mandatory
127)
2658 (byte-compile-report-error "Too many (>127) mandatory arguments")
2663 ;; Byte-compile a lambda-expression and return a valid function.
2664 ;; The value is usually a compiled function but may be the original
2665 ;; lambda-expression.
2666 ;; When ADD-LAMBDA is non-nil, the symbol `lambda' is added as head
2667 ;; of the list FUN and `byte-compile-set-symbol-position' is not called.
2668 ;; Use this feature to avoid calling `byte-compile-set-symbol-position'
2669 ;; for symbols generated by the byte compiler itself.
2670 (defun byte-compile-lambda (fun &optional add-lambda reserved-csts
)
2672 (setq fun
(cons 'lambda fun
))
2673 (unless (eq 'lambda
(car-safe fun
))
2674 (error "Not a lambda list: %S" fun
))
2675 (byte-compile-set-symbol-position 'lambda
))
2676 (byte-compile-check-lambda-list (nth 1 fun
))
2677 (let* ((arglist (nth 1 fun
))
2678 (byte-compile-bound-variables
2679 (append (and (not lexical-binding
)
2680 (byte-compile-arglist-vars arglist
))
2681 byte-compile-bound-variables
))
2682 (body (cdr (cdr fun
)))
2683 (doc (if (stringp (car body
))
2685 ;; Discard the doc string
2686 ;; unless it is the last element of the body.
2688 (setq body
(cdr body
))))))
2689 (int (assq 'interactive body
)))
2690 ;; Process the interactive spec.
2692 (byte-compile-set-symbol-position 'interactive
)
2693 ;; Skip (interactive) if it is in front (the most usual location).
2694 (if (eq int
(car body
))
2695 (setq body
(cdr body
)))
2696 (cond ((consp (cdr int
))
2698 (byte-compile-warn "malformed interactive spec: %s"
2699 (prin1-to-string int
)))
2700 ;; If the interactive spec is a call to `list', don't
2701 ;; compile it, because `call-interactively' looks at the
2702 ;; args of `list'. Actually, compile it to get warnings,
2703 ;; but don't use the result.
2704 (let* ((form (nth 1 int
))
2705 (newform (byte-compile-top-level form
)))
2706 (while (memq (car-safe form
) '(let let
* progn save-excursion
))
2707 (while (consp (cdr form
))
2708 (setq form
(cdr form
)))
2709 (setq form
(car form
)))
2710 (if (and (eq (car-safe form
) 'list
)
2711 ;; The spec is evaled in callint.c in dynamic-scoping
2712 ;; mode, so just leaving the form unchanged would mean
2713 ;; it won't be eval'd in the right mode.
2714 (not lexical-binding
))
2716 (setq int
`(interactive ,newform
)))))
2718 (byte-compile-warn "malformed interactive spec: %s"
2719 (prin1-to-string int
)))))
2720 ;; Process the body.
2722 (byte-compile-top-level (cons 'progn body
) nil
'lambda
2723 ;; If doing lexical binding, push a new
2724 ;; lexical environment containing just the
2725 ;; args (since lambda expressions should be
2727 (and lexical-binding
2728 (byte-compile-make-lambda-lexenv fun
))
2730 ;; Build the actual byte-coded function.
2731 (if (eq 'byte-code
(car-safe compiled
))
2732 (apply 'make-byte-code
2734 (byte-compile-make-args-desc arglist
)
2737 ;; byte-string, constants-vector, stack depth
2739 ;; optionally, the doc string.
2740 (cond (lexical-binding
2742 (list (help-add-fundoc-usage doc arglist
)))
2745 ;; optionally, the interactive spec.
2747 (list (nth 1 int
)))))
2749 (nconc (if int
(list int
))
2750 (cond ((eq (car-safe compiled
) 'progn
) (cdr compiled
))
2751 (compiled (list compiled
)))))
2752 (nconc (list 'lambda arglist
)
2753 (if (or doc
(stringp (car compiled
)))
2754 (cons doc
(cond (compiled)
2758 (defun byte-compile-closure (form &optional add-lambda
)
2759 (let ((code (byte-compile-lambda form add-lambda
)))
2760 ;; A simple lambda is just a constant.
2761 (byte-compile-constant code
)))
2763 (defvar byte-compile-reserved-constants
0)
2765 (defun byte-compile-constants-vector ()
2766 ;; Builds the constants-vector from the current variables and constants.
2767 ;; This modifies the constants from (const . nil) to (const . offset).
2768 ;; To keep the byte-codes to look up the vector as short as possible:
2769 ;; First 6 elements are vars, as there are one-byte varref codes for those.
2770 ;; Next up to byte-constant-limit are constants, still with one-byte codes.
2771 ;; Next variables again, to get 2-byte codes for variable lookup.
2772 ;; The rest of the constants and variables need 3-byte byte-codes.
2773 (let* ((i (1- byte-compile-reserved-constants
))
2774 (rest (nreverse byte-compile-variables
)) ; nreverse because the first
2775 (other (nreverse byte-compile-constants
)) ; vars often are used most.
2777 (limits '(5 ; Use the 1-byte varref codes,
2778 63 ; 1-constlim ; 1-byte byte-constant codes,
2779 255 ; 2-byte varref codes,
2780 65535)) ; 3-byte codes for the rest.
2782 (while (or rest other
)
2783 (setq limit
(car limits
))
2784 (while (and rest
(< i limit
))
2786 ((numberp (car rest
))
2787 (assert (< (car rest
) byte-compile-reserved-constants
)))
2788 ((setq tmp
(assq (car (car rest
)) ret
))
2789 (setcdr (car rest
) (cdr tmp
)))
2791 (setcdr (car rest
) (setq i
(1+ i
)))
2792 (setq ret
(cons (car rest
) ret
))))
2793 (setq rest
(cdr rest
)))
2794 (setq limits
(cdr limits
)
2796 (setq other rest
))))
2797 (apply 'vector
(nreverse (mapcar 'car ret
)))))
2799 ;; Given an expression FORM, compile it and return an equivalent byte-code
2800 ;; expression (a call to the function byte-code).
2801 (defun byte-compile-top-level (form &optional for-effect output-type
2802 lexenv reserved-csts
)
2803 ;; OUTPUT-TYPE advises about how form is expected to be used:
2804 ;; 'eval or nil -> a single form,
2805 ;; 'progn or t -> a list of forms,
2806 ;; 'lambda -> body of a lambda,
2807 ;; 'file -> used at file-level.
2808 (let ((byte-compile--for-effect for-effect
)
2809 (byte-compile-constants nil
)
2810 (byte-compile-variables nil
)
2811 (byte-compile-tag-number 0)
2812 (byte-compile-depth 0)
2813 (byte-compile-maxdepth 0)
2814 (byte-compile-lexical-environment lexenv
)
2815 (byte-compile-reserved-constants (or reserved-csts
0))
2816 (byte-compile-output nil
))
2817 (if (memq byte-optimize
'(t source
))
2818 (setq form
(byte-optimize-form form byte-compile--for-effect
)))
2819 (while (and (eq (car-safe form
) 'progn
) (null (cdr (cdr form
))))
2820 (setq form
(nth 1 form
)))
2821 (if (and (eq 'byte-code
(car-safe form
))
2822 (not (memq byte-optimize
'(t byte
)))
2823 (stringp (nth 1 form
)) (vectorp (nth 2 form
))
2824 (natnump (nth 3 form
)))
2826 ;; Set up things for a lexically-bound function.
2827 (when (and lexical-binding
(eq output-type
'lambda
))
2828 ;; See how many arguments there are, and set the current stack depth
2830 (setq byte-compile-depth
(length byte-compile-lexical-environment
))
2831 ;; If there are args, output a tag to record the initial
2832 ;; stack-depth for the optimizer.
2833 (when (> byte-compile-depth
0)
2834 (byte-compile-out-tag (byte-compile-make-tag))))
2836 (byte-compile-form form byte-compile--for-effect
)
2837 (byte-compile-out-toplevel byte-compile--for-effect output-type
))))
2839 (defun byte-compile-out-toplevel (&optional for-effect output-type
)
2841 ;; The stack is empty. Push a value to be returned from (byte-code ..).
2842 (if (eq (car (car byte-compile-output
)) 'byte-discard
)
2843 (setq byte-compile-output
(cdr byte-compile-output
))
2844 (byte-compile-push-constant
2845 ;; Push any constant - preferably one which already is used, and
2846 ;; a number or symbol - ie not some big sequence. The return value
2847 ;; isn't returned, but it would be a shame if some textually large
2848 ;; constant was not optimized away because we chose to return it.
2849 (and (not (assq nil byte-compile-constants
)) ; Nil is often there.
2850 (let ((tmp (reverse byte-compile-constants
)))
2851 (while (and tmp
(not (or (symbolp (caar tmp
))
2852 (numberp (caar tmp
)))))
2853 (setq tmp
(cdr tmp
)))
2855 (byte-compile-out 'byte-return
0)
2856 (setq byte-compile-output
(nreverse byte-compile-output
))
2857 (if (memq byte-optimize
'(t byte
))
2858 (setq byte-compile-output
2859 (byte-optimize-lapcode byte-compile-output
)))
2861 ;; Decompile trivial functions:
2862 ;; only constants and variables, or a single funcall except in lambdas.
2863 ;; Except for Lisp_Compiled objects, forms like (foo "hi")
2864 ;; are still quicker than (byte-code "..." [foo "hi"] 2).
2865 ;; Note that even (quote foo) must be parsed just as any subr by the
2866 ;; interpreter, so quote should be compiled into byte-code in some contexts.
2867 ;; What to leave uncompiled:
2868 ;; lambda -> never. we used to leave it uncompiled if the body was
2869 ;; a single atom, but that causes confusion if the docstring
2870 ;; uses the (file . pos) syntax. Besides, now that we have
2871 ;; the Lisp_Compiled type, the compiled form is faster.
2872 ;; eval -> atom, quote or (function atom atom atom)
2873 ;; progn -> as <<same-as-eval>> or (progn <<same-as-eval>> atom)
2874 ;; file -> as progn, but takes both quotes and atoms, and longer forms.
2876 (byte-compile--for-effect for-effect
)
2877 (maycall (not (eq output-type
'lambda
))) ; t if we may make a funcall.
2880 ;; #### This should be split out into byte-compile-nontrivial-function-p.
2881 ((or (eq output-type
'lambda
)
2882 (nthcdr (if (eq output-type
'file
) 50 8) byte-compile-output
)
2883 (assq 'TAG byte-compile-output
) ; Not necessary, but speeds up a bit.
2884 (not (setq tmp
(assq 'byte-return byte-compile-output
)))
2886 (setq rest
(nreverse
2887 (cdr (memq tmp
(reverse byte-compile-output
)))))
2890 ((memq (car (car rest
)) '(byte-varref byte-constant
))
2891 (setq tmp
(car (cdr (car rest
))))
2892 (if (if (eq (car (car rest
)) 'byte-constant
)
2895 (not (byte-compile-const-symbol-p tmp
)))))
2897 (setq body
(cons (list 'quote tmp
) body
)))
2898 (setq body
(cons tmp body
))))
2900 ;; Allow a funcall if at most one atom follows it.
2901 (null (nthcdr 3 rest
))
2902 (setq tmp
(get (car (car rest
)) 'byte-opcode-invert
))
2903 (or (null (cdr rest
))
2904 (and (memq output-type
'(file progn t
))
2906 (eq (car (nth 1 rest
)) 'byte-discard
)
2907 (progn (setq rest
(cdr rest
)) t
))))
2908 (setq maycall nil
) ; Only allow one real function call.
2909 (setq body
(nreverse body
))
2911 (if (and (eq tmp
'funcall
)
2912 (eq (car-safe (car body
)) 'quote
))
2913 (cons (nth 1 (car body
)) (cdr body
))
2915 (or (eq output-type
'file
)
2916 (not (delq nil
(mapcar 'consp
(cdr (car body
))))))))
2917 (setq rest
(cdr rest
)))
2919 (let ((byte-compile-vector (byte-compile-constants-vector)))
2920 (list 'byte-code
(byte-compile-lapcode byte-compile-output
)
2921 byte-compile-vector byte-compile-maxdepth
)))
2922 ;; it's a trivial function
2923 ((cdr body
) (cons 'progn
(nreverse body
)))
2926 ;; Given BODY, compile it and return a new body.
2927 (defun byte-compile-top-level-body (body &optional for-effect
)
2929 (byte-compile-top-level (cons 'progn body
) for-effect t
))
2930 (cond ((eq (car-safe body
) 'progn
)
2935 ;; Special macro-expander used during byte-compilation.
2936 (defun byte-compile-macroexpand-declare-function (fn file
&rest args
)
2938 (if (and (consp args
) (listp (car args
)))
2939 (list 'declared
(car args
))
2940 t
)) ; arglist not specified
2941 byte-compile-function-environment
)
2942 ;; We are stating that it _will_ be defined at runtime.
2943 (setq byte-compile-noruntime-functions
2944 (delq fn byte-compile-noruntime-functions
))
2945 ;; Delegate the rest to the normal macro definition.
2946 (macroexpand `(declare-function ,fn
,file
,@args
)))
2949 ;; This is the recursive entry point for compiling each subform of an
2951 ;; If for-effect is non-nil, byte-compile-form will output a byte-discard
2952 ;; before terminating (ie no value will be left on the stack).
2953 ;; A byte-compile handler may, when byte-compile--for-effect is non-nil, choose
2954 ;; output code which does not leave a value on the stack, and then set
2955 ;; byte-compile--for-effect to nil (to prevent byte-compile-form from
2956 ;; outputting the byte-discard).
2957 ;; If a handler wants to call another handler, it should do so via
2958 ;; byte-compile-form, or take extreme care to handle byte-compile--for-effect
2959 ;; correctly. (Use byte-compile-form-do-effect to reset the
2960 ;; byte-compile--for-effect flag too.)
2962 (defun byte-compile-form (form &optional for-effect
)
2963 (let ((byte-compile--for-effect for-effect
))
2966 (cond ((or (not (symbolp form
)) (byte-compile-const-symbol-p form
))
2967 (when (symbolp form
)
2968 (byte-compile-set-symbol-position form
))
2969 (byte-compile-constant form
))
2970 ((and byte-compile--for-effect byte-compile-delete-errors
)
2971 (when (symbolp form
)
2972 (byte-compile-set-symbol-position form
))
2973 (setq byte-compile--for-effect nil
))
2975 (byte-compile-variable-ref form
))))
2976 ((symbolp (car form
))
2977 (let* ((fn (car form
))
2978 (handler (get fn
'byte-compile
)))
2979 (when (byte-compile-const-symbol-p fn
)
2980 (byte-compile-warn "`%s' called as a function" fn
))
2981 (and (byte-compile-warning-enabled-p 'interactive-only
)
2982 (memq fn byte-compile-interactive-only-functions
)
2983 (byte-compile-warn "`%s' used from Lisp code\n\
2984 That command is designed for interactive use only" fn
))
2985 (if (and (fboundp (car form
))
2986 (eq (car-safe (symbol-function (car form
))) 'macro
))
2987 (byte-compile-report-error
2988 (format "Forgot to expand macro %s" (car form
))))
2990 ;; Make sure that function exists. This is important
2991 ;; for CL compiler macros since the symbol may be
2992 ;; `cl-byte-compile-compiler-macro' but if CL isn't
2993 ;; loaded, this function doesn't exist.
2994 (and (not (eq handler
2995 ;; Already handled by macroexpand-all.
2996 'cl-byte-compile-compiler-macro
))
2997 (functionp handler
)))
2998 (funcall handler form
)
2999 (byte-compile-normal-call form
))
3000 (if (byte-compile-warning-enabled-p 'cl-functions
)
3001 (byte-compile-cl-warn form
))))
3002 ((and (or (byte-code-function-p (car form
))
3003 (eq (car-safe (car form
)) 'lambda
))
3004 ;; if the form comes out the same way it went in, that's
3005 ;; because it was malformed, and we couldn't unfold it.
3006 (not (eq form
(setq form
(byte-compile-unfold-lambda form
)))))
3007 (byte-compile-form form byte-compile--for-effect
)
3008 (setq byte-compile--for-effect nil
))
3009 ((byte-compile-normal-call form
)))
3010 (if byte-compile--for-effect
3011 (byte-compile-discard))))
3013 (defun byte-compile-normal-call (form)
3014 (when (and (byte-compile-warning-enabled-p 'callargs
)
3015 (symbolp (car form
)))
3016 (if (memq (car form
)
3017 '(custom-declare-group
3018 ;; custom-declare-variable custom-declare-face
3020 (byte-compile-nogroup-warn form
))
3021 (when (get (car form
) 'byte-obsolete-info
)
3022 (byte-compile-warn-obsolete (car form
)))
3023 (byte-compile-callargs-warn form
))
3024 (if byte-compile-generate-call-tree
3025 (byte-compile-annotate-call-tree form
))
3026 (when (and byte-compile--for-effect
(eq (car form
) 'mapcar
)
3027 (byte-compile-warning-enabled-p 'mapcar
))
3028 (byte-compile-set-symbol-position 'mapcar
)
3030 "`mapcar' called for effect; use `mapc' or `dolist' instead"))
3031 (byte-compile-push-constant (car form
))
3032 (mapc 'byte-compile-form
(cdr form
)) ; wasteful, but faster.
3033 (byte-compile-out 'byte-call
(length (cdr form
))))
3035 (defun byte-compile-check-variable (var &optional binding
)
3036 "Do various error checks before a use of the variable VAR.
3037 If BINDING is non-nil, VAR is being bound."
3039 (byte-compile-set-symbol-position var
))
3040 (cond ((or (not (symbolp var
)) (byte-compile-const-symbol-p var
))
3041 (when (byte-compile-warning-enabled-p 'constants
)
3042 (byte-compile-warn (if binding
3043 "attempt to let-bind %s `%s`"
3044 "variable reference to %s `%s'")
3045 (if (symbolp var
) "constant" "nonvariable")
3046 (prin1-to-string var
))))
3047 ((and (get var
'byte-obsolete-variable
)
3048 (not (memq var byte-compile-not-obsolete-vars
)))
3049 (byte-compile-warn-obsolete var
))))
3051 (defsubst byte-compile-dynamic-variable-op
(base-op var
)
3052 (let ((tmp (assq var byte-compile-variables
)))
3054 (setq tmp
(list var
))
3055 (push tmp byte-compile-variables
))
3056 (byte-compile-out base-op tmp
)))
3058 (defun byte-compile-dynamic-variable-bind (var)
3059 "Generate code to bind the lexical variable VAR to the top-of-stack value."
3060 (byte-compile-check-variable var t
)
3061 (push var byte-compile-bound-variables
)
3062 (byte-compile-dynamic-variable-op 'byte-varbind var
))
3064 (defun byte-compile-variable-ref (var)
3065 "Generate code to push the value of the variable VAR on the stack."
3066 (byte-compile-check-variable var
)
3067 (let ((lex-binding (assq var byte-compile-lexical-environment
)))
3069 ;; VAR is lexically bound
3070 (byte-compile-stack-ref (cdr lex-binding
))
3071 ;; VAR is dynamically bound
3072 (unless (or (not (byte-compile-warning-enabled-p 'free-vars
))
3074 (memq var byte-compile-bound-variables
)
3075 (memq var byte-compile-free-references
))
3076 (byte-compile-warn "reference to free variable `%S'" var
)
3077 (push var byte-compile-free-references
))
3078 (byte-compile-dynamic-variable-op 'byte-varref var
))))
3080 (defun byte-compile-variable-set (var)
3081 "Generate code to set the variable VAR from the top-of-stack value."
3082 (byte-compile-check-variable var
)
3083 (let ((lex-binding (assq var byte-compile-lexical-environment
)))
3085 ;; VAR is lexically bound
3086 (byte-compile-stack-set (cdr lex-binding
))
3087 ;; VAR is dynamically bound
3088 (unless (or (not (byte-compile-warning-enabled-p 'free-vars
))
3090 (memq var byte-compile-bound-variables
)
3091 (memq var byte-compile-free-assignments
))
3092 (byte-compile-warn "assignment to free variable `%s'" var
)
3093 (push var byte-compile-free-assignments
))
3094 (byte-compile-dynamic-variable-op 'byte-varset var
))))
3096 (defmacro byte-compile-get-constant
(const)
3097 `(or (if (stringp ,const
)
3098 ;; In a string constant, treat properties as significant.
3100 (dolist (elt byte-compile-constants
)
3101 (if (equal-including-properties (car elt
) ,const
)
3104 (assq ,const byte-compile-constants
))
3105 (car (setq byte-compile-constants
3106 (cons (list ,const
) byte-compile-constants
)))))
3108 ;; Use this when the value of a form is a constant.
3109 ;; This obeys byte-compile--for-effect.
3110 (defun byte-compile-constant (const)
3111 (if byte-compile--for-effect
3112 (setq byte-compile--for-effect nil
)
3113 (when (symbolp const
)
3114 (byte-compile-set-symbol-position const
))
3115 (byte-compile-out 'byte-constant
(byte-compile-get-constant const
))))
3117 ;; Use this for a constant that is not the value of its containing form.
3118 ;; This ignores byte-compile--for-effect.
3119 (defun byte-compile-push-constant (const)
3120 (let ((byte-compile--for-effect nil
))
3121 (inline (byte-compile-constant const
))))
3123 ;; Compile those primitive ordinary functions
3124 ;; which have special byte codes just for speed.
3126 (defmacro byte-defop-compiler
(function &optional compile-handler
)
3127 "Add a compiler-form for FUNCTION.
3128 If function is a symbol, then the variable \"byte-SYMBOL\" must name
3129 the opcode to be used. If function is a list, the first element
3130 is the function and the second element is the bytecode-symbol.
3131 The second element may be nil, meaning there is no opcode.
3132 COMPILE-HANDLER is the function to use to compile this byte-op, or
3133 may be the abbreviations 0, 1, 2, 3, 0-1, or 1-2.
3134 If it is nil, then the handler is \"byte-compile-SYMBOL.\""
3136 (if (symbolp function
)
3137 (setq opcode
(intern (concat "byte-" (symbol-name function
))))
3138 (setq opcode
(car (cdr function
))
3139 function
(car function
)))
3141 (list 'put
(list 'quote function
) ''byte-compile
3143 (or (cdr (assq compile-handler
3144 '((0 . byte-compile-no-args
)
3145 (1 . byte-compile-one-arg
)
3146 (2 . byte-compile-two-args
)
3147 (3 . byte-compile-three-args
)
3148 (0-1 . byte-compile-zero-or-one-arg
)
3149 (1-2 . byte-compile-one-or-two-args
)
3150 (2-3 . byte-compile-two-or-three-args
)
3153 (intern (concat "byte-compile-"
3154 (symbol-name function
))))))))
3157 (list 'put
(list 'quote function
)
3158 ''byte-opcode
(list 'quote opcode
))
3159 (list 'put
(list 'quote opcode
)
3160 ''byte-opcode-invert
(list 'quote function
)))
3163 (defmacro byte-defop-compiler-1
(function &optional compile-handler
)
3164 (list 'byte-defop-compiler
(list function nil
) compile-handler
))
3167 (put 'byte-call
'byte-opcode-invert
'funcall
)
3168 (put 'byte-list1
'byte-opcode-invert
'list
)
3169 (put 'byte-list2
'byte-opcode-invert
'list
)
3170 (put 'byte-list3
'byte-opcode-invert
'list
)
3171 (put 'byte-list4
'byte-opcode-invert
'list
)
3172 (put 'byte-listN
'byte-opcode-invert
'list
)
3173 (put 'byte-concat2
'byte-opcode-invert
'concat
)
3174 (put 'byte-concat3
'byte-opcode-invert
'concat
)
3175 (put 'byte-concat4
'byte-opcode-invert
'concat
)
3176 (put 'byte-concatN
'byte-opcode-invert
'concat
)
3177 (put 'byte-insertN
'byte-opcode-invert
'insert
)
3179 (byte-defop-compiler point
0)
3180 ;;(byte-defop-compiler mark 0) ;; obsolete
3181 (byte-defop-compiler point-max
0)
3182 (byte-defop-compiler point-min
0)
3183 (byte-defop-compiler following-char
0)
3184 (byte-defop-compiler preceding-char
0)
3185 (byte-defop-compiler current-column
0)
3186 (byte-defop-compiler eolp
0)
3187 (byte-defop-compiler eobp
0)
3188 (byte-defop-compiler bolp
0)
3189 (byte-defop-compiler bobp
0)
3190 (byte-defop-compiler current-buffer
0)
3191 ;;(byte-defop-compiler read-char 0) ;; obsolete
3192 (byte-defop-compiler widen
0)
3193 (byte-defop-compiler end-of-line
0-
1)
3194 (byte-defop-compiler forward-char
0-
1)
3195 (byte-defop-compiler forward-line
0-
1)
3196 (byte-defop-compiler symbolp
1)
3197 (byte-defop-compiler consp
1)
3198 (byte-defop-compiler stringp
1)
3199 (byte-defop-compiler listp
1)
3200 (byte-defop-compiler not
1)
3201 (byte-defop-compiler (null byte-not
) 1)
3202 (byte-defop-compiler car
1)
3203 (byte-defop-compiler cdr
1)
3204 (byte-defop-compiler length
1)
3205 (byte-defop-compiler symbol-value
1)
3206 (byte-defop-compiler symbol-function
1)
3207 (byte-defop-compiler (1+ byte-add1
) 1)
3208 (byte-defop-compiler (1- byte-sub1
) 1)
3209 (byte-defop-compiler goto-char
1)
3210 (byte-defop-compiler char-after
0-
1)
3211 (byte-defop-compiler set-buffer
1)
3212 ;;(byte-defop-compiler set-mark 1) ;; obsolete
3213 (byte-defop-compiler forward-word
0-
1)
3214 (byte-defop-compiler char-syntax
1)
3215 (byte-defop-compiler nreverse
1)
3216 (byte-defop-compiler car-safe
1)
3217 (byte-defop-compiler cdr-safe
1)
3218 (byte-defop-compiler numberp
1)
3219 (byte-defop-compiler integerp
1)
3220 (byte-defop-compiler skip-chars-forward
1-
2)
3221 (byte-defop-compiler skip-chars-backward
1-
2)
3222 (byte-defop-compiler eq
2)
3223 (byte-defop-compiler memq
2)
3224 (byte-defop-compiler cons
2)
3225 (byte-defop-compiler aref
2)
3226 (byte-defop-compiler set
2)
3227 (byte-defop-compiler (= byte-eqlsign
) 2)
3228 (byte-defop-compiler (< byte-lss
) 2)
3229 (byte-defop-compiler (> byte-gtr
) 2)
3230 (byte-defop-compiler (<= byte-leq
) 2)
3231 (byte-defop-compiler (>= byte-geq
) 2)
3232 (byte-defop-compiler get
2)
3233 (byte-defop-compiler nth
2)
3234 (byte-defop-compiler substring
2-
3)
3235 (byte-defop-compiler (move-marker byte-set-marker
) 2-
3)
3236 (byte-defop-compiler set-marker
2-
3)
3237 (byte-defop-compiler match-beginning
1)
3238 (byte-defop-compiler match-end
1)
3239 (byte-defop-compiler upcase
1)
3240 (byte-defop-compiler downcase
1)
3241 (byte-defop-compiler string
= 2)
3242 (byte-defop-compiler string
< 2)
3243 (byte-defop-compiler (string-equal byte-string
=) 2)
3244 (byte-defop-compiler (string-lessp byte-string
<) 2)
3245 (byte-defop-compiler equal
2)
3246 (byte-defop-compiler nthcdr
2)
3247 (byte-defop-compiler elt
2)
3248 (byte-defop-compiler member
2)
3249 (byte-defop-compiler assq
2)
3250 (byte-defop-compiler (rplaca byte-setcar
) 2)
3251 (byte-defop-compiler (rplacd byte-setcdr
) 2)
3252 (byte-defop-compiler setcar
2)
3253 (byte-defop-compiler setcdr
2)
3254 (byte-defop-compiler buffer-substring
2)
3255 (byte-defop-compiler delete-region
2)
3256 (byte-defop-compiler narrow-to-region
2)
3257 (byte-defop-compiler (% byte-rem
) 2)
3258 (byte-defop-compiler aset
3)
3260 (byte-defop-compiler max byte-compile-associative
)
3261 (byte-defop-compiler min byte-compile-associative
)
3262 (byte-defop-compiler (+ byte-plus
) byte-compile-associative
)
3263 (byte-defop-compiler (* byte-mult
) byte-compile-associative
)
3265 ;;####(byte-defop-compiler move-to-column 1)
3266 (byte-defop-compiler-1 interactive byte-compile-noop
)
3269 (defun byte-compile-subr-wrong-args (form n
)
3270 (byte-compile-set-symbol-position (car form
))
3271 (byte-compile-warn "`%s' called with %d arg%s, but requires %s"
3272 (car form
) (length (cdr form
))
3273 (if (= 1 (length (cdr form
))) "" "s") n
)
3274 ;; get run-time wrong-number-of-args error.
3275 (byte-compile-normal-call form
))
3277 (defun byte-compile-no-args (form)
3278 (if (not (= (length form
) 1))
3279 (byte-compile-subr-wrong-args form
"none")
3280 (byte-compile-out (get (car form
) 'byte-opcode
) 0)))
3282 (defun byte-compile-one-arg (form)
3283 (if (not (= (length form
) 2))
3284 (byte-compile-subr-wrong-args form
1)
3285 (byte-compile-form (car (cdr form
))) ;; Push the argument
3286 (byte-compile-out (get (car form
) 'byte-opcode
) 0)))
3288 (defun byte-compile-two-args (form)
3289 (if (not (= (length form
) 3))
3290 (byte-compile-subr-wrong-args form
2)
3291 (byte-compile-form (car (cdr form
))) ;; Push the arguments
3292 (byte-compile-form (nth 2 form
))
3293 (byte-compile-out (get (car form
) 'byte-opcode
) 0)))
3295 (defun byte-compile-three-args (form)
3296 (if (not (= (length form
) 4))
3297 (byte-compile-subr-wrong-args form
3)
3298 (byte-compile-form (car (cdr form
))) ;; Push the arguments
3299 (byte-compile-form (nth 2 form
))
3300 (byte-compile-form (nth 3 form
))
3301 (byte-compile-out (get (car form
) 'byte-opcode
) 0)))
3303 (defun byte-compile-zero-or-one-arg (form)
3304 (let ((len (length form
)))
3305 (cond ((= len
1) (byte-compile-one-arg (append form
'(nil))))
3306 ((= len
2) (byte-compile-one-arg form
))
3307 (t (byte-compile-subr-wrong-args form
"0-1")))))
3309 (defun byte-compile-one-or-two-args (form)
3310 (let ((len (length form
)))
3311 (cond ((= len
2) (byte-compile-two-args (append form
'(nil))))
3312 ((= len
3) (byte-compile-two-args form
))
3313 (t (byte-compile-subr-wrong-args form
"1-2")))))
3315 (defun byte-compile-two-or-three-args (form)
3316 (let ((len (length form
)))
3317 (cond ((= len
3) (byte-compile-three-args (append form
'(nil))))
3318 ((= len
4) (byte-compile-three-args form
))
3319 (t (byte-compile-subr-wrong-args form
"2-3")))))
3321 (defun byte-compile-noop (_form)
3322 (byte-compile-constant nil
))
3324 (defun byte-compile-discard (&optional num preserve-tos
)
3325 "Output byte codes to discard the NUM entries at the top of the stack.
3327 If PRESERVE-TOS is non-nil, preserve the top-of-stack value, as if it were
3328 popped before discarding the num values, and then pushed back again after
3330 (if (and (null num
) (not preserve-tos
))
3332 (byte-compile-out 'byte-discard
)
3336 (when (and preserve-tos
(> num
0))
3337 ;; Preserve the top-of-stack value by writing it directly to the stack
3338 ;; location which will be at the top-of-stack after popping.
3339 (byte-compile-stack-set (1- (- byte-compile-depth num
)))
3340 ;; Now we actually discard one less value, since we want to keep
3342 (setq num
(1- num
)))
3344 (byte-compile-out 'byte-discard
)
3345 (setq num
(1- num
)))))
3347 (defun byte-compile-stack-ref (stack-pos)
3348 "Output byte codes to push the value at stack position STACK-POS."
3349 (let ((dist (- byte-compile-depth
(1+ stack-pos
))))
3351 ;; A simple optimization
3352 (byte-compile-out 'byte-dup
)
3354 (byte-compile-out 'byte-stack-ref dist
))))
3356 (defun byte-compile-stack-set (stack-pos)
3357 "Output byte codes to store the TOS value at stack position STACK-POS."
3358 (byte-compile-out 'byte-stack-set
(- byte-compile-depth
(1+ stack-pos
))))
3360 (byte-defop-compiler-1 internal-make-closure byte-compile-make-closure
)
3361 (byte-defop-compiler-1 internal-get-closed-var byte-compile-get-closed-var
)
3363 (defconst byte-compile--env-var
(make-symbol "env"))
3365 (defun byte-compile-make-closure (form)
3366 (if byte-compile--for-effect
(setq byte-compile--for-effect nil
)
3367 (let* ((vars (nth 1 form
))
3369 (body (nthcdr 3 form
))
3371 (byte-compile-lambda `(lambda ,vars .
,body
) nil
(length env
))))
3372 (assert (byte-code-function-p fun
))
3373 (byte-compile-form `(make-byte-code
3374 ',(aref fun
0) ',(aref fun
1)
3375 (vconcat (vector .
,env
) ',(aref fun
2))
3376 ,@(nthcdr 3 (mapcar (lambda (x) `',x
) fun
)))))))
3379 (defun byte-compile-get-closed-var (form)
3380 (if byte-compile--for-effect
(setq byte-compile--for-effect nil
)
3381 (byte-compile-out 'byte-constant
;; byte-closed-var
3384 ;; Compile a function that accepts one or more args and is right-associative.
3385 ;; We do it by left-associativity so that the operations
3386 ;; are done in the same order as in interpreted code.
3387 ;; We treat the one-arg case, as in (+ x), like (+ x 0).
3388 ;; in order to convert markers to numbers, and trigger expected errors.
3389 (defun byte-compile-associative (form)
3391 (let ((opcode (get (car form
) 'byte-opcode
))
3393 (if (and (< 3 (length form
))
3394 (memq opcode
(list (get '+ 'byte-opcode
)
3395 (get '* 'byte-opcode
))))
3396 ;; Don't use binary operations for > 2 operands, as that
3397 ;; may cause overflow/truncation in float operations.
3398 (byte-compile-normal-call form
)
3399 (setq args
(copy-sequence (cdr form
)))
3400 (byte-compile-form (car args
))
3401 (setq args
(cdr args
))
3402 (or args
(setq args
'(0)
3403 opcode
(get '+ 'byte-opcode
)))
3405 (byte-compile-form arg
)
3406 (byte-compile-out opcode
0))))
3407 (byte-compile-constant (eval form
))))
3410 ;; more complicated compiler macros
3412 (byte-defop-compiler char-before
)
3413 (byte-defop-compiler backward-char
)
3414 (byte-defop-compiler backward-word
)
3415 (byte-defop-compiler list
)
3416 (byte-defop-compiler concat
)
3417 (byte-defop-compiler fset
)
3418 (byte-defop-compiler (indent-to-column byte-indent-to
) byte-compile-indent-to
)
3419 (byte-defop-compiler indent-to
)
3420 (byte-defop-compiler insert
)
3421 (byte-defop-compiler-1 function byte-compile-function-form
)
3422 (byte-defop-compiler-1 - byte-compile-minus
)
3423 (byte-defop-compiler (/ byte-quo
) byte-compile-quo
)
3424 (byte-defop-compiler nconc
)
3426 (defun byte-compile-char-before (form)
3427 (cond ((= 2 (length form
))
3428 (byte-compile-form (list 'char-after
(if (numberp (nth 1 form
))
3430 `(1- ,(nth 1 form
))))))
3431 ((= 1 (length form
))
3432 (byte-compile-form '(char-after (1- (point)))))
3433 (t (byte-compile-subr-wrong-args form
"0-1"))))
3435 ;; backward-... ==> forward-... with negated argument.
3436 (defun byte-compile-backward-char (form)
3437 (cond ((= 2 (length form
))
3438 (byte-compile-form (list 'forward-char
(if (numberp (nth 1 form
))
3440 `(- ,(nth 1 form
))))))
3441 ((= 1 (length form
))
3442 (byte-compile-form '(forward-char -
1)))
3443 (t (byte-compile-subr-wrong-args form
"0-1"))))
3445 (defun byte-compile-backward-word (form)
3446 (cond ((= 2 (length form
))
3447 (byte-compile-form (list 'forward-word
(if (numberp (nth 1 form
))
3449 `(- ,(nth 1 form
))))))
3450 ((= 1 (length form
))
3451 (byte-compile-form '(forward-word -
1)))
3452 (t (byte-compile-subr-wrong-args form
"0-1"))))
3454 (defun byte-compile-list (form)
3455 (let ((count (length (cdr form
))))
3457 (byte-compile-constant nil
))
3459 (mapc 'byte-compile-form
(cdr form
))
3461 (aref [byte-list1 byte-list2 byte-list3 byte-list4
] (1- count
)) 0))
3463 (mapc 'byte-compile-form
(cdr form
))
3464 (byte-compile-out 'byte-listN count
))
3465 (t (byte-compile-normal-call form
)))))
3467 (defun byte-compile-concat (form)
3468 (let ((count (length (cdr form
))))
3469 (cond ((and (< 1 count
) (< count
5))
3470 (mapc 'byte-compile-form
(cdr form
))
3472 (aref [byte-concat2 byte-concat3 byte-concat4
] (- count
2))
3474 ;; Concat of one arg is not a no-op if arg is not a string.
3476 (byte-compile-form ""))
3478 (mapc 'byte-compile-form
(cdr form
))
3479 (byte-compile-out 'byte-concatN count
))
3480 ((byte-compile-normal-call form
)))))
3482 (defun byte-compile-minus (form)
3483 (let ((len (length form
)))
3485 ((= 1 len
) (byte-compile-constant 0))
3487 (byte-compile-form (cadr form
))
3488 (byte-compile-out 'byte-negate
0))
3490 (byte-compile-form (nth 1 form
))
3491 (byte-compile-form (nth 2 form
))
3492 (byte-compile-out 'byte-diff
0))
3493 ;; Don't use binary operations for > 2 operands, as that may
3494 ;; cause overflow/truncation in float operations.
3495 (t (byte-compile-normal-call form
)))))
3497 (defun byte-compile-quo (form)
3498 (let ((len (length form
)))
3500 (byte-compile-subr-wrong-args form
"2 or more"))
3502 (byte-compile-two-args form
))
3504 ;; Don't use binary operations for > 2 operands, as that
3505 ;; may cause overflow/truncation in float operations.
3506 (byte-compile-normal-call form
)))))
3508 (defun byte-compile-nconc (form)
3509 (let ((len (length form
)))
3511 (byte-compile-constant nil
))
3513 ;; nconc of one arg is a noop, even if that arg isn't a list.
3514 (byte-compile-form (nth 1 form
)))
3516 (byte-compile-form (car (setq form
(cdr form
))))
3517 (while (setq form
(cdr form
))
3518 (byte-compile-form (car form
))
3519 (byte-compile-out 'byte-nconc
0))))))
3521 (defun byte-compile-fset (form)
3522 ;; warn about forms like (fset 'foo '(lambda () ...))
3523 ;; (where the lambda expression is non-trivial...)
3524 (let ((fn (nth 2 form
))
3526 (if (and (eq (car-safe fn
) 'quote
)
3527 (eq (car-safe (setq fn
(nth 1 fn
))) 'lambda
))
3529 (setq body
(cdr (cdr fn
)))
3530 (if (stringp (car body
)) (setq body
(cdr body
)))
3531 (if (eq 'interactive
(car-safe (car body
))) (setq body
(cdr body
)))
3532 (if (and (consp (car body
))
3533 (not (eq 'byte-code
(car (car body
)))))
3535 "A quoted lambda form is the second argument of `fset'. This is probably
3536 not what you want, as that lambda cannot be compiled. Consider using
3537 the syntax (function (lambda (...) ...)) instead.")))))
3538 (byte-compile-two-args form
))
3540 ;; (function foo) must compile like 'foo, not like (symbol-function 'foo).
3541 ;; Otherwise it will be incompatible with the interpreter,
3542 ;; and (funcall (function foo)) will lose with autoloads.
3544 (defun byte-compile-function-form (form)
3545 (if (symbolp (nth 1 form
))
3546 (byte-compile-constant (nth 1 form
))
3547 (byte-compile-closure (nth 1 form
))))
3549 (defun byte-compile-indent-to (form)
3550 (let ((len (length form
)))
3552 (byte-compile-form (car (cdr form
)))
3553 (byte-compile-out 'byte-indent-to
0))
3555 ;; no opcode for 2-arg case.
3556 (byte-compile-normal-call form
))
3558 (byte-compile-subr-wrong-args form
"1-2")))))
3560 (defun byte-compile-insert (form)
3561 (cond ((null (cdr form
))
3562 (byte-compile-constant nil
))
3563 ((<= (length form
) 256)
3564 (mapc 'byte-compile-form
(cdr form
))
3565 (if (cdr (cdr form
))
3566 (byte-compile-out 'byte-insertN
(length (cdr form
)))
3567 (byte-compile-out 'byte-insert
0)))
3568 ((memq t
(mapcar 'consp
(cdr (cdr form
))))
3569 (byte-compile-normal-call form
))
3570 ;; We can split it; there is no function call after inserting 1st arg.
3572 (while (setq form
(cdr form
))
3573 (byte-compile-form (car form
))
3574 (byte-compile-out 'byte-insert
0)
3576 (byte-compile-discard))))))
3579 (byte-defop-compiler-1 setq
)
3580 (byte-defop-compiler-1 setq-default
)
3581 (byte-defop-compiler-1 quote
)
3583 (defun byte-compile-setq (form)
3584 (let ((args (cdr form
)))
3587 (byte-compile-form (car (cdr args
)))
3588 (or byte-compile--for-effect
(cdr (cdr args
))
3589 (byte-compile-out 'byte-dup
0))
3590 (byte-compile-variable-set (car args
))
3591 (setq args
(cdr (cdr args
))))
3592 ;; (setq), with no arguments.
3593 (byte-compile-form nil byte-compile--for-effect
))
3594 (setq byte-compile--for-effect nil
)))
3596 (defun byte-compile-setq-default (form)
3597 (setq form
(cdr form
))
3598 (if (> (length form
) 2)
3601 (push `(setq-default ,(pop form
) ,(pop form
)) setters
))
3602 (byte-compile-form (cons 'progn
(nreverse setters
))))
3603 (let ((var (car form
)))
3604 (and (or (not (symbolp var
))
3605 (byte-compile-const-symbol-p var t
))
3606 (byte-compile-warning-enabled-p 'constants
)
3608 "variable assignment to %s `%s'"
3609 (if (symbolp var
) "constant" "nonvariable")
3610 (prin1-to-string var
)))
3611 (byte-compile-normal-call `(set-default ',var
,@(cdr form
))))))
3613 (byte-defop-compiler-1 set-default
)
3614 (defun byte-compile-set-default (form)
3615 (let ((varexp (car-safe (cdr-safe form
))))
3616 (if (eq (car-safe varexp
) 'quote
)
3617 ;; If the varexp is constant, compile it as a setq-default
3618 ;; so we get more warnings.
3619 (byte-compile-setq-default `(setq-default ,(car-safe (cdr varexp
))
3621 (byte-compile-normal-call form
))))
3623 (defun byte-compile-quote (form)
3624 (byte-compile-constant (car (cdr form
))))
3626 ;;; control structures
3628 (defun byte-compile-body (body &optional for-effect
)
3630 (byte-compile-form (car body
) t
)
3631 (setq body
(cdr body
)))
3632 (byte-compile-form (car body
) for-effect
))
3634 (defsubst byte-compile-body-do-effect
(body)
3635 (byte-compile-body body byte-compile--for-effect
)
3636 (setq byte-compile--for-effect nil
))
3638 (defsubst byte-compile-form-do-effect
(form)
3639 (byte-compile-form form byte-compile--for-effect
)
3640 (setq byte-compile--for-effect nil
))
3642 (byte-defop-compiler-1 inline byte-compile-progn
)
3643 (byte-defop-compiler-1 progn
)
3644 (byte-defop-compiler-1 prog1
)
3645 (byte-defop-compiler-1 prog2
)
3646 (byte-defop-compiler-1 if
)
3647 (byte-defop-compiler-1 cond
)
3648 (byte-defop-compiler-1 and
)
3649 (byte-defop-compiler-1 or
)
3650 (byte-defop-compiler-1 while
)
3651 (byte-defop-compiler-1 funcall
)
3652 (byte-defop-compiler-1 let
)
3653 (byte-defop-compiler-1 let
* byte-compile-let
)
3655 (defun byte-compile-progn (form)
3656 (byte-compile-body-do-effect (cdr form
)))
3658 (defun byte-compile-prog1 (form)
3659 (byte-compile-form-do-effect (car (cdr form
)))
3660 (byte-compile-body (cdr (cdr form
)) t
))
3662 (defun byte-compile-prog2 (form)
3663 (byte-compile-form (nth 1 form
) t
)
3664 (byte-compile-form-do-effect (nth 2 form
))
3665 (byte-compile-body (cdr (cdr (cdr form
))) t
))
3667 (defmacro byte-compile-goto-if
(cond discard tag
)
3670 (if ,discard
'byte-goto-if-not-nil
'byte-goto-if-not-nil-else-pop
)
3671 (if ,discard
'byte-goto-if-nil
'byte-goto-if-nil-else-pop
))
3674 ;; Return the list of items in CONDITION-PARAM that match PRED-LIST.
3675 ;; Only return items that are not in ONLY-IF-NOT-PRESENT.
3676 (defun byte-compile-find-bound-condition (condition-param
3678 &optional only-if-not-present
)
3682 (if (memq (car-safe condition-param
) pred-list
)
3683 ;; The condition appears by itself.
3684 (list condition-param
)
3685 ;; If the condition is an `and', look for matches among the
3687 (when (eq 'and
(car-safe condition-param
))
3688 (cdr condition-param
)))))
3690 (dolist (crt cond-list
)
3691 (when (and (memq (car-safe crt
) pred-list
)
3692 (eq 'quote
(car-safe (setq nth-one
(nth 1 crt
))))
3693 ;; Ignore if the symbol is already on the unresolved
3695 (not (assq (nth 1 nth-one
) ; the relevant symbol
3696 only-if-not-present
)))
3697 (push (nth 1 (nth 1 crt
)) result
)))
3700 (defmacro byte-compile-maybe-guarded
(condition &rest body
)
3701 "Execute forms in BODY, potentially guarded by CONDITION.
3702 CONDITION is a variable whose value is a test in an `if' or `cond'.
3703 BODY is the code to compile in the first arm of the if or the body of
3704 the cond clause. If CONDITION's value is of the form (fboundp 'foo)
3705 or (boundp 'foo), the relevant warnings from BODY about foo's
3706 being undefined (or obsolete) will be suppressed.
3708 If CONDITION's value is (not (featurep 'emacs)) or (featurep 'xemacs),
3709 that suppresses all warnings during execution of BODY."
3710 (declare (indent 1) (debug t
))
3711 `(let* ((fbound-list (byte-compile-find-bound-condition
3712 ,condition
(list 'fboundp
)
3713 byte-compile-unresolved-functions
))
3714 (bound-list (byte-compile-find-bound-condition
3715 ,condition
(list 'boundp
'default-boundp
)))
3716 ;; Maybe add to the bound list.
3717 (byte-compile-bound-variables
3718 (append bound-list byte-compile-bound-variables
)))
3720 ;; If things not being bound at all is ok, so must them being
3721 ;; obsolete. Note that we add to the existing lists since Tramp
3722 ;; (ab)uses this feature.
3723 (let ((byte-compile-not-obsolete-vars
3724 (append byte-compile-not-obsolete-vars bound-list
))
3725 (byte-compile-not-obsolete-funcs
3726 (append byte-compile-not-obsolete-funcs fbound-list
)))
3728 ;; Maybe remove the function symbol from the unresolved list.
3729 (dolist (fbound fbound-list
)
3731 (setq byte-compile-unresolved-functions
3732 (delq (assq fbound byte-compile-unresolved-functions
)
3733 byte-compile-unresolved-functions
)))))))
3735 (defun byte-compile-if (form)
3736 (byte-compile-form (car (cdr form
)))
3737 ;; Check whether we have `(if (fboundp ...' or `(if (boundp ...'
3738 ;; and avoid warnings about the relevent symbols in the consequent.
3739 (let ((clause (nth 1 form
))
3740 (donetag (byte-compile-make-tag)))
3741 (if (null (nthcdr 3 form
))
3744 (byte-compile-goto-if nil byte-compile--for-effect donetag
)
3745 (byte-compile-maybe-guarded clause
3746 (byte-compile-form (nth 2 form
) byte-compile--for-effect
))
3747 (byte-compile-out-tag donetag
))
3748 (let ((elsetag (byte-compile-make-tag)))
3749 (byte-compile-goto 'byte-goto-if-nil elsetag
)
3750 (byte-compile-maybe-guarded clause
3751 (byte-compile-form (nth 2 form
) byte-compile--for-effect
))
3752 (byte-compile-goto 'byte-goto donetag
)
3753 (byte-compile-out-tag elsetag
)
3754 (byte-compile-maybe-guarded (list 'not clause
)
3755 (byte-compile-body (cdr (cdr (cdr form
))) byte-compile--for-effect
))
3756 (byte-compile-out-tag donetag
))))
3757 (setq byte-compile--for-effect nil
))
3759 (defun byte-compile-cond (clauses)
3760 (let ((donetag (byte-compile-make-tag))
3762 (while (setq clauses
(cdr clauses
))
3763 (setq clause
(car clauses
))
3764 (cond ((or (eq (car clause
) t
)
3765 (and (eq (car-safe (car clause
)) 'quote
)
3766 (car-safe (cdr-safe (car clause
)))))
3767 ;; Unconditional clause
3768 (setq clause
(cons t clause
)
3771 (byte-compile-form (car clause
))
3772 (if (null (cdr clause
))
3773 ;; First clause is a singleton.
3774 (byte-compile-goto-if t byte-compile--for-effect donetag
)
3775 (setq nexttag
(byte-compile-make-tag))
3776 (byte-compile-goto 'byte-goto-if-nil nexttag
)
3777 (byte-compile-maybe-guarded (car clause
)
3778 (byte-compile-body (cdr clause
) byte-compile--for-effect
))
3779 (byte-compile-goto 'byte-goto donetag
)
3780 (byte-compile-out-tag nexttag
)))))
3782 (let ((guard (car clause
)))
3783 (and (cdr clause
) (not (eq guard t
))
3784 (progn (byte-compile-form guard
)
3785 (byte-compile-goto-if nil byte-compile--for-effect donetag
)
3786 (setq clause
(cdr clause
))))
3787 (byte-compile-maybe-guarded guard
3788 (byte-compile-body-do-effect clause
)))
3789 (byte-compile-out-tag donetag
)))
3791 (defun byte-compile-and (form)
3792 (let ((failtag (byte-compile-make-tag))
3795 (byte-compile-form-do-effect t
)
3796 (byte-compile-and-recursion args failtag
))))
3798 ;; Handle compilation of a nontrivial `and' call.
3799 ;; We use tail recursion so we can use byte-compile-maybe-guarded.
3800 (defun byte-compile-and-recursion (rest failtag
)
3803 (byte-compile-form (car rest
))
3804 (byte-compile-goto-if nil byte-compile--for-effect failtag
)
3805 (byte-compile-maybe-guarded (car rest
)
3806 (byte-compile-and-recursion (cdr rest
) failtag
)))
3807 (byte-compile-form-do-effect (car rest
))
3808 (byte-compile-out-tag failtag
)))
3810 (defun byte-compile-or (form)
3811 (let ((wintag (byte-compile-make-tag))
3814 (byte-compile-form-do-effect nil
)
3815 (byte-compile-or-recursion args wintag
))))
3817 ;; Handle compilation of a nontrivial `or' call.
3818 ;; We use tail recursion so we can use byte-compile-maybe-guarded.
3819 (defun byte-compile-or-recursion (rest wintag
)
3822 (byte-compile-form (car rest
))
3823 (byte-compile-goto-if t byte-compile--for-effect wintag
)
3824 (byte-compile-maybe-guarded (list 'not
(car rest
))
3825 (byte-compile-or-recursion (cdr rest
) wintag
)))
3826 (byte-compile-form-do-effect (car rest
))
3827 (byte-compile-out-tag wintag
)))
3829 (defun byte-compile-while (form)
3830 (let ((endtag (byte-compile-make-tag))
3831 (looptag (byte-compile-make-tag)))
3832 (byte-compile-out-tag looptag
)
3833 (byte-compile-form (car (cdr form
)))
3834 (byte-compile-goto-if nil byte-compile--for-effect endtag
)
3835 (byte-compile-body (cdr (cdr form
)) t
)
3836 (byte-compile-goto 'byte-goto looptag
)
3837 (byte-compile-out-tag endtag
)
3838 (setq byte-compile--for-effect nil
)))
3840 (defun byte-compile-funcall (form)
3841 (mapc 'byte-compile-form
(cdr form
))
3842 (byte-compile-out 'byte-call
(length (cdr (cdr form
)))))
3847 (defun byte-compile-push-binding-init (clause)
3848 "Emit byte-codes to push the initialization value for CLAUSE on the stack.
3849 Return the offset in the form (VAR . OFFSET)."
3850 (let* ((var (if (consp clause
) (car clause
) clause
)))
3851 ;; We record the stack position even of dynamic bindings and
3852 ;; variables in non-stack lexical environments; we'll put
3853 ;; them in the proper place below.
3854 (prog1 (cons var byte-compile-depth
)
3856 (byte-compile-form (cadr clause
))
3857 (byte-compile-push-constant nil
)))))
3859 (defun byte-compile-not-lexical-var-p (var)
3860 (or (not (symbolp var
))
3861 (special-variable-p var
)
3862 (memq var byte-compile-bound-variables
)
3866 (defun byte-compile-bind (var init-lexenv
)
3867 "Emit byte-codes to bind VAR and update `byte-compile-lexical-environment'.
3868 INIT-LEXENV should be a lexical-environment alist describing the
3869 positions of the init value that have been pushed on the stack.
3870 Return non-nil if the TOS value was popped."
3871 ;; The presence of lexical bindings mean that we may have to
3872 ;; juggle things on the stack, to move them to TOS for
3874 (cond ((not (byte-compile-not-lexical-var-p var
))
3875 ;; VAR is a simple stack-allocated lexical variable
3876 (push (assq var init-lexenv
)
3877 byte-compile-lexical-environment
)
3879 ((eq var
(caar init-lexenv
))
3880 ;; VAR is dynamic and is on the top of the
3881 ;; stack, so we can just bind it like usual
3882 (byte-compile-dynamic-variable-bind var
)
3885 ;; VAR is dynamic, but we have to get its
3886 ;; value out of the middle of the stack
3887 (let ((stack-pos (cdr (assq var init-lexenv
))))
3888 (byte-compile-stack-ref stack-pos
)
3889 (byte-compile-dynamic-variable-bind var
)
3890 ;; Now we have to store nil into its temporary
3891 ;; stack position to avoid problems with GC
3892 (byte-compile-push-constant nil
)
3893 (byte-compile-stack-set stack-pos
))
3896 (defun byte-compile-unbind (clauses init-lexenv
3897 &optional preserve-body-value
)
3898 "Emit byte-codes to unbind the variables bound by CLAUSES.
3899 CLAUSES is a `let'-style variable binding list. INIT-LEXENV should be a
3900 lexical-environment alist describing the positions of the init value that
3901 have been pushed on the stack. If PRESERVE-BODY-VALUE is true,
3902 then an additional value on the top of the stack, above any lexical binding
3903 slots, is preserved, so it will be on the top of the stack after all
3904 binding slots have been popped."
3905 ;; Unbind dynamic variables
3906 (let ((num-dynamic-bindings 0))
3907 (dolist (clause clauses
)
3908 (unless (assq (if (consp clause
) (car clause
) clause
)
3909 byte-compile-lexical-environment
)
3910 (setq num-dynamic-bindings
(1+ num-dynamic-bindings
))))
3911 (unless (zerop num-dynamic-bindings
)
3912 (byte-compile-out 'byte-unbind num-dynamic-bindings
)))
3913 ;; Pop lexical variables off the stack, possibly preserving the
3914 ;; return value of the body.
3916 ;; INIT-LEXENV contains all init values left on the stack
3917 (byte-compile-discard (length init-lexenv
) preserve-body-value
)))
3919 (defun byte-compile-let (form)
3920 "Generate code for the `let' form FORM."
3921 (let ((clauses (cadr form
))
3923 (when (eq (car form
) 'let
)
3924 ;; First compute the binding values in the old scope.
3925 (dolist (var clauses
)
3926 (push (byte-compile-push-binding-init var
) init-lexenv
)))
3928 (let ((byte-compile-bound-variables byte-compile-bound-variables
)
3929 (byte-compile-lexical-environment byte-compile-lexical-environment
))
3930 ;; Bind the variables.
3931 ;; For `let', do it in reverse order, because it makes no
3932 ;; semantic difference, but it is a lot more efficient since the
3933 ;; values are now in reverse order on the stack.
3934 (dolist (var (if (eq (car form
) 'let
) (reverse clauses
) clauses
))
3935 (unless (eq (car form
) 'let
)
3936 (push (byte-compile-push-binding-init var
) init-lexenv
))
3937 (let ((var (if (consp var
) (car var
) var
)))
3938 (cond ((null lexical-binding
)
3939 ;; If there are no lexical bindings, we can do things simply.
3940 (byte-compile-dynamic-variable-bind var
))
3941 ((byte-compile-bind var init-lexenv
)
3942 (pop init-lexenv
)))))
3944 (let ((init-stack-depth byte-compile-depth
))
3945 (byte-compile-body-do-effect (cdr (cdr form
)))
3946 ;; Unbind the variables.
3948 ;; Unbind both lexical and dynamic variables.
3950 (assert (or (eq byte-compile-depth init-stack-depth
)
3951 (eq byte-compile-depth
(1+ init-stack-depth
))))
3952 (byte-compile-unbind clauses init-lexenv
(> byte-compile-depth
3954 ;; Unbind dynamic variables.
3955 (byte-compile-out 'byte-unbind
(length clauses
)))))))
3959 (byte-defop-compiler-1 /= byte-compile-negated
)
3960 (byte-defop-compiler-1 atom byte-compile-negated
)
3961 (byte-defop-compiler-1 nlistp byte-compile-negated
)
3963 (put '/= 'byte-compile-negated-op
'=)
3964 (put 'atom
'byte-compile-negated-op
'consp
)
3965 (put 'nlistp
'byte-compile-negated-op
'listp
)
3967 (defun byte-compile-negated (form)
3968 (byte-compile-form-do-effect (byte-compile-negation-optimizer form
)))
3970 ;; Even when optimization is off, /= is optimized to (not (= ...)).
3971 (defun byte-compile-negation-optimizer (form)
3972 ;; an optimizer for forms where <form1> is less efficient than (not <form2>)
3973 (byte-compile-set-symbol-position (car form
))
3975 (cons (or (get (car form
) 'byte-compile-negated-op
)
3977 "Compiler error: `%s' has no `byte-compile-negated-op' property"
3982 ;;; other tricky macro-like special-forms
3984 (byte-defop-compiler-1 catch
)
3985 (byte-defop-compiler-1 unwind-protect
)
3986 (byte-defop-compiler-1 condition-case
)
3987 (byte-defop-compiler-1 save-excursion
)
3988 (byte-defop-compiler-1 save-current-buffer
)
3989 (byte-defop-compiler-1 save-restriction
)
3990 (byte-defop-compiler-1 track-mouse
)
3992 (defun byte-compile-catch (form)
3993 (byte-compile-form (car (cdr form
)))
3996 (byte-compile-form `(list 'funcall
,f
)))
3998 (byte-compile-push-constant
3999 (byte-compile-top-level (cons 'progn body
) byte-compile--for-effect
))))
4000 (byte-compile-out 'byte-catch
0))
4002 (defun byte-compile-unwind-protect (form)
4005 (byte-compile-form `(list (list 'funcall
,f
))))
4007 (byte-compile-push-constant
4008 (byte-compile-top-level-body handlers t
))))
4009 (byte-compile-out 'byte-unwind-protect
0)
4010 (byte-compile-form-do-effect (car (cdr form
)))
4011 (byte-compile-out 'byte-unbind
1))
4013 (defun byte-compile-track-mouse (form)
4016 (`(,_
:fun-body
,f
) `(eval (list 'track-mouse
(list 'funcall
,f
))))
4017 (_ `(eval '(track-mouse ,@(byte-compile-top-level-body (cdr form
))))))))
4019 (defun byte-compile-condition-case (form)
4020 (let* ((var (nth 1 form
))
4021 (fun-bodies (eq var
:fun-body
))
4022 (byte-compile-bound-variables
4023 (if (and var
(not fun-bodies
))
4024 (cons var byte-compile-bound-variables
)
4025 byte-compile-bound-variables
)))
4026 (byte-compile-set-symbol-position 'condition-case
)
4027 (unless (symbolp var
)
4029 "`%s' is not a variable-name or nil (in condition-case)" var
))
4030 (if fun-bodies
(setq var
(make-symbol "err")))
4031 (byte-compile-push-constant var
)
4033 (byte-compile-form `(list 'funcall
,(nth 2 form
)))
4034 (byte-compile-push-constant
4035 (byte-compile-top-level (nth 2 form
) byte-compile--for-effect
)))
4036 (let ((compiled-clauses
4039 (let ((condition (car clause
)))
4040 (cond ((not (or (symbolp condition
)
4041 (and (listp condition
)
4043 (dolist (sym condition
)
4044 (if (not (symbolp sym
))
4048 "`%S' is not a condition name or list of such (in condition-case)"
4050 ;; (not (or (eq condition 't)
4051 ;; (and (stringp (get condition 'error-message))
4052 ;; (consp (get condition
4053 ;; 'error-conditions)))))
4054 ;; (byte-compile-warn
4055 ;; "`%s' is not a known condition name
4056 ;; (in condition-case)"
4060 `(list ',condition
(list 'funcall
,(cadr clause
) ',var
))
4062 (byte-compile-top-level-body
4063 (cdr clause
) byte-compile--for-effect
)))))
4064 (cdr (cdr (cdr form
))))))
4066 (byte-compile-form `(list ,@compiled-clauses
))
4067 (byte-compile-push-constant compiled-clauses
)))
4068 (byte-compile-out 'byte-condition-case
0)))
4071 (defun byte-compile-save-excursion (form)
4072 (if (and (eq 'set-buffer
(car-safe (car-safe (cdr form
))))
4073 (byte-compile-warning-enabled-p 'suspicious
))
4074 (byte-compile-warn "`save-excursion' defeated by `set-buffer'"))
4075 (byte-compile-out 'byte-save-excursion
0)
4076 (byte-compile-body-do-effect (cdr form
))
4077 (byte-compile-out 'byte-unbind
1))
4079 (defun byte-compile-save-restriction (form)
4080 (byte-compile-out 'byte-save-restriction
0)
4081 (byte-compile-body-do-effect (cdr form
))
4082 (byte-compile-out 'byte-unbind
1))
4084 (defun byte-compile-save-current-buffer (form)
4085 (byte-compile-out 'byte-save-current-buffer
0)
4086 (byte-compile-body-do-effect (cdr form
))
4087 (byte-compile-out 'byte-unbind
1))
4089 ;;; top-level forms elsewhere
4091 (byte-defop-compiler-1 defun
)
4092 (byte-defop-compiler-1 defmacro
)
4093 (byte-defop-compiler-1 defvar
)
4094 (byte-defop-compiler-1 defconst byte-compile-defvar
)
4095 (byte-defop-compiler-1 autoload
)
4096 (byte-defop-compiler-1 lambda byte-compile-lambda-form
)
4098 (defun byte-compile-defun (form)
4099 ;; This is not used for file-level defuns with doc strings.
4100 (if (symbolp (car form
))
4101 (byte-compile-set-symbol-position (car form
))
4102 (byte-compile-set-symbol-position 'defun
)
4103 (error "defun name must be a symbol, not %s" (car form
)))
4104 (let ((byte-compile--for-effect nil
))
4105 (byte-compile-push-constant 'defalias
)
4106 (byte-compile-push-constant (nth 1 form
))
4107 (byte-compile-closure (cdr (cdr form
)) t
))
4108 (byte-compile-out 'byte-call
2))
4110 (defun byte-compile-defmacro (form)
4111 ;; This is not used for file-level defmacros with doc strings.
4112 (byte-compile-body-do-effect
4113 (let ((decls (byte-compile-defmacro-declaration form
))
4114 (code (byte-compile-byte-code-maker
4115 (byte-compile-lambda (cdr (cdr form
)) t
))))
4116 `((defalias ',(nth 1 form
)
4117 ,(if (eq (car-safe code
) 'make-byte-code
)
4118 `(cons 'macro
,code
)
4119 `'(macro .
,(eval code
))))
4123 (defun byte-compile-defvar (form)
4124 ;; This is not used for file-level defvar/consts with doc strings.
4125 (when (and (symbolp (nth 1 form
))
4126 (not (string-match "[-*/:$]" (symbol-name (nth 1 form
))))
4127 (byte-compile-warning-enabled-p 'lexical
))
4128 (byte-compile-warn "global/dynamic var `%s' lacks a prefix"
4130 (let ((fun (nth 0 form
))
4132 (value (nth 2 form
))
4133 (string (nth 3 form
)))
4134 (byte-compile-set-symbol-position fun
)
4135 (when (or (> (length form
) 4)
4136 (and (eq fun
'defconst
) (null (cddr form
))))
4137 (let ((ncall (length (cdr form
))))
4139 "`%s' called with %d argument%s, but %s %s"
4141 (if (= 1 ncall
) "" "s")
4142 (if (< ncall
2) "requires" "accepts only")
4144 (push var byte-compile-bound-variables
)
4145 (if (eq fun
'defconst
)
4146 (push var byte-compile-const-variables
))
4147 (byte-compile-body-do-effect
4149 ;; Put the defined variable in this library's load-history entry
4150 ;; just as a real defvar would, but only in top-level forms.
4151 (when (and (cddr form
) (null byte-compile-current-form
))
4152 `(setq current-load-list
(cons ',var current-load-list
)))
4153 (when (> (length form
) 3)
4154 (when (and string
(not (stringp string
)))
4155 (byte-compile-warn "third arg to `%s %s' is not a string: %s"
4157 `(put ',var
'variable-documentation
,string
))
4158 (if (cddr form
) ; `value' provided
4159 (let ((byte-compile-not-obsolete-vars (list var
)))
4160 (if (eq fun
'defconst
)
4161 ;; `defconst' sets `var' unconditionally.
4162 (let ((tmp (make-symbol "defconst-tmp-var")))
4163 `(funcall '(lambda (,tmp
) (defconst ,var
,tmp
))
4165 ;; `defvar' sets `var' only when unbound.
4166 `(if (not (default-boundp ',var
)) (setq-default ,var
,value
))))
4167 (when (eq fun
'defconst
)
4168 ;; This will signal an appropriate error at runtime.
4172 (defun byte-compile-autoload (form)
4173 (byte-compile-set-symbol-position 'autoload
)
4174 (and (byte-compile-constp (nth 1 form
))
4175 (byte-compile-constp (nth 5 form
))
4176 (eval (nth 5 form
)) ; macro-p
4177 (not (fboundp (eval (nth 1 form
))))
4179 "The compiler ignores `autoload' except at top level. You should
4180 probably put the autoload of the macro `%s' at top-level."
4181 (eval (nth 1 form
))))
4182 (byte-compile-normal-call form
))
4184 ;; Lambdas in valid places are handled as special cases by various code.
4185 ;; The ones that remain are errors.
4186 (defun byte-compile-lambda-form (_form)
4187 (byte-compile-set-symbol-position 'lambda
)
4188 (error "`lambda' used as function name is invalid"))
4190 ;; Compile normally, but deal with warnings for the function being defined.
4191 (put 'defalias
'byte-hunk-handler
'byte-compile-file-form-defalias
)
4192 (defun byte-compile-file-form-defalias (form)
4193 (if (and (consp (cdr form
)) (consp (nth 1 form
))
4194 (eq (car (nth 1 form
)) 'quote
)
4195 (consp (cdr (nth 1 form
)))
4196 (symbolp (nth 1 (nth 1 form
))))
4198 (and (consp (nthcdr 2 form
))
4199 (consp (nth 2 form
))
4200 (eq (car (nth 2 form
)) 'quote
)
4201 (consp (cdr (nth 2 form
)))
4202 (symbolp (nth 1 (nth 2 form
))))))
4203 (byte-compile-defalias-warn (nth 1 (nth 1 form
)))
4204 (push (cons (nth 1 (nth 1 form
))
4205 (if constant
(nth 1 (nth 2 form
)) t
))
4206 byte-compile-function-environment
)))
4207 ;; We used to just do: (byte-compile-normal-call form)
4208 ;; But it turns out that this fails to optimize the code.
4209 ;; So instead we now do the same as what other byte-hunk-handlers do,
4210 ;; which is to call back byte-compile-file-form and then return nil.
4211 ;; Except that we can't just call byte-compile-file-form since it would
4212 ;; call us right back.
4213 (byte-compile-keep-pending form
)
4214 ;; Return nil so the form is not output twice.
4217 ;; Turn off warnings about prior calls to the function being defalias'd.
4218 ;; This could be smarter and compare those calls with
4219 ;; the function it is being aliased to.
4220 (defun byte-compile-defalias-warn (new)
4221 (let ((calls (assq new byte-compile-unresolved-functions
)))
4223 (setq byte-compile-unresolved-functions
4224 (delq calls byte-compile-unresolved-functions
)))))
4226 (byte-defop-compiler-1 with-no-warnings byte-compile-no-warnings
)
4227 (defun byte-compile-no-warnings (form)
4228 (let (byte-compile-warnings)
4229 (byte-compile-form (cons 'progn
(cdr form
)))))
4231 ;; Warn about misuses of make-variable-buffer-local.
4232 (byte-defop-compiler-1 make-variable-buffer-local
4233 byte-compile-make-variable-buffer-local
)
4234 (defun byte-compile-make-variable-buffer-local (form)
4235 (if (and (eq (car-safe (car-safe (cdr-safe form
))) 'quote
)
4236 (byte-compile-warning-enabled-p 'make-local
))
4238 "`make-variable-buffer-local' should be called at toplevel"))
4239 (byte-compile-normal-call form
))
4240 (put 'make-variable-buffer-local
4241 'byte-hunk-handler
'byte-compile-form-make-variable-buffer-local
)
4242 (defun byte-compile-form-make-variable-buffer-local (form)
4243 (byte-compile-keep-pending form
'byte-compile-normal-call
))
4248 ;; Note: Most operations will strip off the 'TAG, but it speeds up
4249 ;; optimization to have the 'TAG as a part of the tag.
4250 ;; Tags will be (TAG . (tag-number . stack-depth)).
4251 (defun byte-compile-make-tag ()
4252 (list 'TAG
(setq byte-compile-tag-number
(1+ byte-compile-tag-number
))))
4255 (defun byte-compile-out-tag (tag)
4256 (setq byte-compile-output
(cons tag byte-compile-output
))
4259 ;; ## remove this someday
4260 (and byte-compile-depth
4261 (not (= (cdr (cdr tag
)) byte-compile-depth
))
4262 (error "Compiler bug: depth conflict at tag %d" (car (cdr tag
))))
4263 (setq byte-compile-depth
(cdr (cdr tag
))))
4264 (setcdr (cdr tag
) byte-compile-depth
)))
4266 (defun byte-compile-goto (opcode tag
)
4267 (push (cons opcode tag
) byte-compile-output
)
4268 (setcdr (cdr tag
) (if (memq opcode byte-goto-always-pop-ops
)
4269 (1- byte-compile-depth
)
4270 byte-compile-depth
))
4271 (setq byte-compile-depth
(and (not (eq opcode
'byte-goto
))
4272 (1- byte-compile-depth
))))
4274 (defun byte-compile-stack-adjustment (op operand
)
4275 "Return the amount by which an operation adjusts the stack.
4276 OP and OPERAND are as passed to `byte-compile-out'."
4277 (if (memq op
'(byte-call byte-discardN byte-discardN-preserve-tos
))
4278 ;; For calls, OPERAND is the number of args, so we pop OPERAND + 1
4279 ;; elements, and the push the result, for a total of -OPERAND.
4280 ;; For discardN*, of course, we just pop OPERAND elements.
4282 (or (aref byte-stack
+-info
(symbol-value op
))
4283 ;; Ops with a nil entry in `byte-stack+-info' are byte-codes
4284 ;; that take OPERAND values off the stack and push a result, for
4285 ;; a total of 1 - OPERAND
4288 (defun byte-compile-out (op &optional operand
)
4289 (push (cons op operand
) byte-compile-output
)
4290 (if (eq op
'byte-return
)
4291 ;; This is actually an unnecessary case, because there should be no
4292 ;; more ops behind byte-return.
4293 (setq byte-compile-depth nil
)
4294 (setq byte-compile-depth
4295 (+ byte-compile-depth
(byte-compile-stack-adjustment op operand
)))
4296 (setq byte-compile-maxdepth
(max byte-compile-depth byte-compile-maxdepth
))
4297 ;;(if (< byte-compile-depth 0) (error "Compiler error: stack underflow"))
4300 (defun byte-compile-delay-out (&optional stack-used stack-adjust
)
4301 "Add a placeholder to the output, which can be used to later add byte-codes.
4302 Return a position tag that can be passed to `byte-compile-delayed-out'
4303 to add the delayed byte-codes. STACK-USED is the maximum amount of
4304 stack-spaced used by the delayed byte-codes (defaulting to 0), and
4305 STACK-ADJUST is the amount by which the later-added code will adjust the
4306 stack (defaulting to 0); the byte-codes added later _must_ adjust the
4307 stack by this amount! If STACK-ADJUST is 0, then it's not necessary to
4308 actually add anything later; the effect as if nothing was added at all."
4309 ;; We just add a no-op to `byte-compile-output', and return a pointer to
4310 ;; the tail of the list; `byte-compile-delayed-out' uses list surgery
4311 ;; to add the byte-codes.
4313 (setq byte-compile-maxdepth
4314 (max byte-compile-depth
(+ byte-compile-depth
(or stack-used
0)))))
4316 (setq byte-compile-depth
4317 (+ byte-compile-depth stack-adjust
)))
4318 (push (cons nil
(or stack-adjust
0)) byte-compile-output
))
4320 (defun byte-compile-delayed-out (position op
&optional operand
)
4321 "Add at POSITION the byte-operation OP, with optional numeric arg OPERAND.
4322 POSITION should a position returned by `byte-compile-delay-out'.
4323 Return a new position, which can be used to add further operations."
4324 (unless (null (caar position
))
4325 (error "Bad POSITION arg to `byte-compile-delayed-out'"))
4326 ;; This is kind of like `byte-compile-out', but we splice into the list
4327 ;; where POSITION is. We don't bother updating `byte-compile-maxdepth'
4328 ;; because that was already done by `byte-compile-delay-out', but we do
4329 ;; update the relative operand stored in the no-op marker currently at
4330 ;; POSITION; since we insert before that marker, this means that if the
4331 ;; caller doesn't insert a sequence of byte-codes that matches the expected
4332 ;; operand passed to `byte-compile-delay-out', then the nop will still have
4333 ;; a non-zero operand when `byte-compile-lapcode' is called, which will
4334 ;; cause an error to be signaled.
4336 ;; Adjust the cumulative stack-adjustment stored in the cdr of the no-op
4337 (setcdr (car position
)
4338 (- (cdar position
) (byte-compile-stack-adjustment op operand
)))
4339 ;; Add the new operation onto the list tail at POSITION
4340 (setcdr position
(cons (cons op operand
) (cdr position
)))
4346 (defun byte-compile-annotate-call-tree (form)
4348 ;; annotate the current call
4349 (if (setq entry
(assq (car form
) byte-compile-call-tree
))
4350 (or (memq byte-compile-current-form
(nth 1 entry
)) ;callers
4352 (cons byte-compile-current-form
(nth 1 entry
))))
4353 (setq byte-compile-call-tree
4354 (cons (list (car form
) (list byte-compile-current-form
) nil
)
4355 byte-compile-call-tree
)))
4356 ;; annotate the current function
4357 (if (setq entry
(assq byte-compile-current-form byte-compile-call-tree
))
4358 (or (memq (car form
) (nth 2 entry
)) ;called
4359 (setcar (cdr (cdr entry
))
4360 (cons (car form
) (nth 2 entry
))))
4361 (setq byte-compile-call-tree
4362 (cons (list byte-compile-current-form nil
(list (car form
)))
4363 byte-compile-call-tree
)))
4366 ;; Renamed from byte-compile-report-call-tree
4367 ;; to avoid interfering with completion of byte-compile-file.
4369 (defun display-call-tree (&optional filename
)
4370 "Display a call graph of a specified file.
4371 This lists which functions have been called, what functions called
4372 them, and what functions they call. The list includes all functions
4373 whose definitions have been compiled in this Emacs session, as well as
4374 all functions called by those functions.
4376 The call graph does not include macros, inline functions, or
4377 primitives that the byte-code interpreter knows about directly \(eq,
4380 The call tree also lists those functions which are not known to be called
4381 \(that is, to which no calls have been compiled\), and which cannot be
4382 invoked interactively."
4384 (message "Generating call tree...")
4385 (with-output-to-temp-buffer "*Call-Tree*"
4386 (set-buffer "*Call-Tree*")
4388 (message "Generating call tree... (sorting on %s)"
4389 byte-compile-call-tree-sort
)
4390 (insert "Call tree for "
4391 (cond ((null byte-compile-current-file
) (or filename
"???"))
4392 ((stringp byte-compile-current-file
)
4393 byte-compile-current-file
)
4394 (t (buffer-name byte-compile-current-file
)))
4396 (prin1-to-string byte-compile-call-tree-sort
)
4398 (if byte-compile-call-tree-sort
4399 (setq byte-compile-call-tree
4400 (sort byte-compile-call-tree
4401 (case byte-compile-call-tree-sort
4403 (lambda (x y
) (< (length (nth 1 x
))
4404 (length (nth 1 y
)))))
4406 (lambda (x y
) (< (length (nth 2 x
))
4407 (length (nth 2 y
)))))
4409 (lambda (x y
) (< (+ (length (nth 1 x
))
4411 (+ (length (nth 1 y
))
4412 (length (nth 2 y
))))))
4414 (lambda (x y
) (string< (car x
) (car y
))))
4415 (t (error "`byte-compile-call-tree-sort': `%s' - unknown sort mode"
4416 byte-compile-call-tree-sort
))))))
4417 (message "Generating call tree...")
4418 (let ((rest byte-compile-call-tree
)
4419 (b (current-buffer))
4423 (prin1 (car (car rest
)) b
)
4424 (setq callers
(nth 1 (car rest
))
4425 calls
(nth 2 (car rest
)))
4427 (cond ((not (fboundp (setq f
(car (car rest
)))))
4429 " <top level>";; shouldn't insert nil then, actually -sk
4431 ((subrp (setq f
(symbol-function f
)))
4434 (format " ==> %s" f
))
4435 ((byte-code-function-p f
)
4436 "<compiled function>")
4438 "<malformed function>")
4439 ((eq 'macro
(car f
))
4440 (if (or (byte-code-function-p (cdr f
))
4441 (assq 'byte-code
(cdr (cdr (cdr f
)))))
4444 ((assq 'byte-code
(cdr (cdr f
)))
4445 "<compiled lambda>")
4446 ((eq 'lambda
(car f
))
4449 (format " (%d callers + %d calls = %d)"
4450 ;; Does the optimizer eliminate common subexpressions?-sk
4453 (+ (length callers
) (length calls
)))
4457 (insert " called by:\n")
4459 (insert " " (if (car callers
)
4460 (mapconcat 'symbol-name callers
", ")
4462 (let ((fill-prefix " "))
4463 (fill-region-as-paragraph p
(point)))
4464 (unless (= 0 (current-column))
4468 (insert " calls:\n")
4470 (insert " " (mapconcat 'symbol-name calls
", "))
4471 (let ((fill-prefix " "))
4472 (fill-region-as-paragraph p
(point)))
4473 (unless (= 0 (current-column))
4475 (setq rest
(cdr rest
)))
4477 (message "Generating call tree...(finding uncalled functions...)")
4478 (setq rest byte-compile-call-tree
)
4481 (or (nth 1 (car rest
))
4482 (null (setq f
(caar rest
)))
4484 (setq def
(byte-compile-fdefinition f t
))
4485 (and (eq (car-safe def
) 'macro
)
4486 (eq (car-safe (cdr-safe def
)) 'lambda
)
4487 (setq def
(cdr def
)))
4490 (setq def
(byte-compile-fdefinition f nil
))
4491 (and (eq (car-safe def
) 'macro
)
4492 (eq (car-safe (cdr-safe def
)) 'lambda
)
4493 (setq def
(cdr def
)))
4495 (setq uncalled
(cons f uncalled
)))
4496 (setq rest
(cdr rest
)))
4498 (let ((fill-prefix " "))
4499 (insert "Noninteractive functions not known to be called:\n ")
4501 (insert (mapconcat 'symbol-name
(nreverse uncalled
) ", "))
4502 (fill-region-as-paragraph p
(point))))))
4503 (message "Generating call tree...done.")))
4507 (defun batch-byte-compile-if-not-done ()
4508 "Like `byte-compile-file' but doesn't recompile if already up to date.
4509 Use this from the command line, with `-batch';
4510 it won't work in an interactive Emacs."
4511 (batch-byte-compile t
))
4513 ;;; by crl@newton.purdue.edu
4514 ;;; Only works noninteractively.
4516 (defun batch-byte-compile (&optional noforce
)
4517 "Run `byte-compile-file' on the files remaining on the command line.
4518 Use this from the command line, with `-batch';
4519 it won't work in an interactive Emacs.
4520 Each file is processed even if an error occurred previously.
4521 For example, invoke \"emacs -batch -f batch-byte-compile $emacs/ ~/*.el\".
4522 If NOFORCE is non-nil, don't recompile a file that seems to be
4523 already up-to-date."
4524 ;; command-line-args-left is what is left of the command line, from
4526 (defvar command-line-args-left
) ;Avoid 'free variable' warning
4527 (if (not noninteractive
)
4528 (error "`batch-byte-compile' is to be used only with -batch"))
4530 (while command-line-args-left
4531 (if (file-directory-p (expand-file-name (car command-line-args-left
)))
4532 ;; Directory as argument.
4534 (dolist (file (directory-files (car command-line-args-left
)))
4535 (if (and (string-match emacs-lisp-file-regexp file
)
4536 (not (auto-save-file-name-p file
))
4538 (expand-file-name file
4539 (car command-line-args-left
)))
4540 (setq dest
(byte-compile-dest-file source
))
4541 (file-exists-p dest
)
4542 (file-newer-than-file-p source dest
))
4543 (if (null (batch-byte-compile-file source
))
4545 ;; Specific file argument
4546 (if (or (not noforce
)
4547 (let* ((source (car command-line-args-left
))
4548 (dest (byte-compile-dest-file source
)))
4549 (or (not (file-exists-p dest
))
4550 (file-newer-than-file-p source dest
))))
4551 (if (null (batch-byte-compile-file (car command-line-args-left
)))
4553 (setq command-line-args-left
(cdr command-line-args-left
)))
4554 (kill-emacs (if error
1 0))))
4556 (defun batch-byte-compile-file (file)
4558 (byte-compile-file file
)
4560 (byte-compile-file file
)
4562 (message (if (cdr err
)
4563 ">>Error occurred processing %s: %s (%s)"
4564 ">>Error occurred processing %s: %s")
4566 (get (car err
) 'error-message
)
4567 (prin1-to-string (cdr err
)))
4568 (let ((destfile (byte-compile-dest-file file
)))
4569 (if (file-exists-p destfile
)
4570 (delete-file destfile
)))
4573 (message (if (cdr err
)
4574 ">>Error occurred processing %s: %s (%s)"
4575 ">>Error occurred processing %s: %s")
4577 (get (car err
) 'error-message
)
4578 (prin1-to-string (cdr err
)))
4581 (defun byte-compile-refresh-preloaded ()
4582 "Reload any Lisp file that was changed since Emacs was dumped.
4584 (let* ((argv0 (car command-line-args
))
4585 (emacs-file (executable-find argv0
)))
4586 (if (not (and emacs-file
(file-executable-p emacs-file
)))
4587 (message "Can't find %s to refresh preloaded Lisp files" argv0
)
4588 (dolist (f (reverse load-history
))
4590 (if (string-match "elc\\'" f
) (setq f
(substring f
0 -
1)))
4591 (when (and (file-readable-p f
)
4592 (file-newer-than-file-p f emacs-file
)
4593 ;; Don't reload the source version of the files below
4594 ;; because that causes subsequent byte-compilation to
4595 ;; be a lot slower and need a higher max-lisp-eval-depth,
4596 ;; so it can cause recompilation to fail.
4597 (not (member (file-name-nondirectory f
)
4598 '("pcase.el" "bytecomp.el" "macroexp.el"
4599 "cconv.el" "byte-opt.el"))))
4600 (message "Reloading stale %s" (file-name-nondirectory f
))
4602 (load f
'noerror nil
'nosuffix
)
4603 ;; Probably shouldn't happen, but in case of an error, it seems
4604 ;; at least as useful to ignore it as it is to stop compilation.
4608 (defun batch-byte-recompile-directory (&optional arg
)
4609 "Run `byte-recompile-directory' on the dirs remaining on the command line.
4610 Must be used only with `-batch', and kills Emacs on completion.
4611 For example, invoke `emacs -batch -f batch-byte-recompile-directory .'.
4613 Optional argument ARG is passed as second argument ARG to
4614 `byte-recompile-directory'; see there for its possible values
4615 and corresponding effects."
4616 ;; command-line-args-left is what is left of the command line (startup.el)
4617 (defvar command-line-args-left
) ;Avoid 'free variable' warning
4618 (if (not noninteractive
)
4619 (error "batch-byte-recompile-directory is to be used only with -batch"))
4620 (or command-line-args-left
4621 (setq command-line-args-left
'(".")))
4622 (while command-line-args-left
4623 (byte-recompile-directory (car command-line-args-left
) arg
)
4624 (setq command-line-args-left
(cdr command-line-args-left
)))
4627 (provide 'byte-compile
)
4631 ;;; report metering (see the hacks in bytecode.c)
4633 (defvar byte-code-meter
)
4634 (defun byte-compile-report-ops ()
4635 (or (boundp 'byte-metering-on
)
4636 (error "You must build Emacs with -DBYTE_CODE_METER to use this"))
4637 (with-output-to-temp-buffer "*Meter*"
4638 (set-buffer "*Meter*")
4639 (let ((i 0) n op off
)
4641 (setq n
(aref (aref byte-code-meter
0) i
)
4643 (if t
;(not (zerop n))
4647 (cond ((< op byte-nth
)
4648 (setq off
(logand op
7))
4649 (setq op
(logand op
248)))
4650 ((>= op byte-constant
)
4651 (setq off
(- op byte-constant
)
4653 (setq op
(aref byte-code-vector op
))
4654 (insert (format "%-4d" i
))
4655 (insert (symbol-name op
))
4656 (if off
(insert " [" (int-to-string off
) "]"))
4658 (insert (int-to-string n
) "\n")))
4661 ;; To avoid "lisp nesting exceeds max-lisp-eval-depth" when bytecomp compiles
4662 ;; itself, compile some of its most used recursive functions (at load time).
4665 (or (byte-code-function-p (symbol-function 'byte-compile-form
))
4666 (assq 'byte-code
(symbol-function 'byte-compile-form
))
4667 (let ((byte-optimize nil
) ; do it fast
4668 (byte-compile-warnings nil
))
4670 (or noninteractive
(message "compiling %s..." x
))
4672 (or noninteractive
(message "compiling %s...done" x
)))
4673 '(byte-compile-normal-call
4676 ;; Inserted some more than necessary, to speed it up.
4677 byte-compile-top-level
4678 byte-compile-out-toplevel
4679 byte-compile-constant
4680 byte-compile-variable-ref
))))
4683 (run-hooks 'bytecomp-load-hook
)
4685 ;;; bytecomp.el ends here