Annotation of 43BSDReno/contrib/emacs-18.55/lisp/bytecomp.el, revision 1.1.1.1

1.1       root        1: ;; Compilation of Lisp code into byte code.
                      2: ;; Copyright (C) 1985, 1986, 1987 Free Software Foundation, Inc.
                      3: 
                      4: ;; This file is part of GNU Emacs.
                      5: 
                      6: ;; GNU Emacs is distributed in the hope that it will be useful,
                      7: ;; but WITHOUT ANY WARRANTY.  No author or distributor
                      8: ;; accepts responsibility to anyone for the consequences of using it
                      9: ;; or for whether it serves any particular purpose or works at all,
                     10: ;; unless he says so in writing.  Refer to the GNU Emacs General Public
                     11: ;; License for full details.
                     12: 
                     13: ;; Everyone is granted permission to copy, modify and redistribute
                     14: ;; GNU Emacs, but only under the conditions described in the
                     15: ;; GNU Emacs General Public License.   A copy of this license is
                     16: ;; supposed to have been given to you along with GNU Emacs so you
                     17: ;; can know your rights and responsibilities.  It should be in a
                     18: ;; file named COPYING.  Among other things, the copyright notice
                     19: ;; and this notice must be preserved on all copies.
                     20: 
                     21: (provide 'byte-compile)
                     22: 
                     23: (defvar byte-compile-constnum -1
                     24:   "Transfer vector index of last constant allocated.")
                     25: (defvar byte-compile-constants nil
                     26:   "Alist describing contents to put in transfer vector.
                     27: Each element is (CONTENTS . INDEX)")
                     28: (defvar byte-compile-macro-environment nil
                     29:   "Alist of (MACRONAME . DEFINITION) macros defined in the file
                     30: which is being compiled.")
                     31: (defvar byte-compile-pc 0
                     32:   "Index in byte string to store next opcode at.")
                     33: (defvar byte-compile-output nil
                     34:   "Alist describing contents to put in byte code string.
                     35: Each element is (INDEX . VALUE)")
                     36: (defvar byte-compile-depth 0
                     37:   "Current depth of execution stack.")
                     38: (defvar byte-compile-maxdepth 0
                     39:   "Maximum depth of execution stack.")
                     40: 
                     41: (defconst byte-varref 8
                     42:   "Byte code opcode for variable reference.")
                     43: (defconst byte-varset 16
                     44:   "Byte code opcode for setting a variable.")
                     45: (defconst byte-varbind 24
                     46:   "Byte code opcode for binding a variable.")
                     47: (defconst byte-call 32
                     48:   "Byte code opcode for calling a function.")
                     49: (defconst byte-unbind 40
                     50:   "Byte code opcode for unbinding special bindings.")
                     51: 
                     52: (defconst byte-constant 192
                     53:   "Byte code opcode for reference to a constant.")
                     54: (defconst byte-constant-limit 64
                     55:   "Maximum index usable in  byte-constant  opcode.")
                     56: 
                     57: (defconst byte-constant2 129
                     58:   "Byte code opcode for reference to a constant with vector index >= 0100.")
                     59: 
                     60: (defconst byte-goto 130
                     61:   "Byte code opcode for unconditional jump")
                     62: 
                     63: (defconst byte-goto-if-nil 131
                     64:   "Byte code opcode for pop value and jump if it's nil.")
                     65: 
                     66: (defconst byte-goto-if-not-nil 132
                     67:   "Byte code opcode for pop value and jump if it's not nil.")
                     68: 
                     69: (defconst byte-goto-if-nil-else-pop 133
                     70:   "Byte code opcode for examine top-of-stack, jump and don't pop it if it's nil,
                     71: otherwise pop it.")
                     72: 
                     73: (defconst byte-goto-if-not-nil-else-pop 134
                     74:   "Byte code opcode for examine top-of-stack, jump and don't pop it if it's not nil,
                     75: otherwise pop it.")
                     76: 
                     77: (defconst byte-return 135
                     78:   "Byte code opcode for pop value and return it from byte code interpreter.")
                     79: 
                     80: (defconst byte-discard 136
                     81:   "Byte code opcode to discard one value from stack.")
                     82: 
                     83: (defconst byte-dup 137
                     84:   "Byte code opcode to duplicate the top of the stack.")
                     85: 
                     86: (defconst byte-save-excursion 138
                     87:   "Byte code opcode to make a binding to record the buffer, point and mark.")
                     88: 
                     89: (defconst byte-save-window-excursion 139
                     90:   "Byte code opcode to make a binding to record entire window configuration.")
                     91: 
                     92: (defconst byte-save-restriction 140
                     93:   "Byte code opcode to make a binding to record the current buffer clipping restrictions.")
                     94: 
                     95: (defconst byte-catch 141
                     96:   "Byte code opcode for catch.  Takes, on stack, the tag and an expression for the body.")
                     97: 
                     98: (defconst byte-unwind-protect 142
                     99:   "Byte code opcode for unwind-protect.  Takes, on stack, an expression for the body
                    100: and an expression for the unwind-action.")
                    101: 
                    102: (defconst byte-condition-case 143
                    103:   "Byte code opcode for condition-case.  Takes, on stack, the variable to bind,
                    104: an expression for the body, and a list of clauses.")
                    105: 
                    106: (defconst byte-temp-output-buffer-setup 144
                    107:   "Byte code opcode for entry to with-output-to-temp-buffer.
                    108: Takes, on stack, the buffer name.
                    109: Binds standard-output and does some other things.
                    110: Returns with temp buffer on the stack in place of buffer name.")
                    111: 
                    112: (defconst byte-temp-output-buffer-show 145
                    113:   "Byte code opcode for exit from with-output-to-temp-buffer.
                    114: Expects the temp buffer on the stack underneath value to return.
                    115: Pops them both, then pushes the value back on.
                    116: Unbinds standard-output and makes the temp buffer visible.")
                    117: 
                    118: (defconst byte-nth 56)
                    119: (defconst byte-symbolp 57)
                    120: (defconst byte-consp 58)
                    121: (defconst byte-stringp 59)
                    122: (defconst byte-listp 60)
                    123: (defconst byte-eq 61)
                    124: (defconst byte-memq 62)
                    125: (defconst byte-not 63)
                    126: (defconst byte-car 64)
                    127: (defconst byte-cdr 65)
                    128: (defconst byte-cons 66)
                    129: (defconst byte-list1 67)
                    130: (defconst byte-list2 68)
                    131: (defconst byte-list3 69)
                    132: (defconst byte-list4 70)
                    133: (defconst byte-length 71)
                    134: (defconst byte-aref 72)
                    135: (defconst byte-aset 73)
                    136: (defconst byte-symbol-value 74)
                    137: (defconst byte-symbol-function 75)
                    138: (defconst byte-set 76)
                    139: (defconst byte-fset 77)
                    140: (defconst byte-get 78)
                    141: (defconst byte-substring 79)
                    142: (defconst byte-concat2 80)
                    143: (defconst byte-concat3 81)
                    144: (defconst byte-concat4 82)
                    145: (defconst byte-sub1 83)
                    146: (defconst byte-add1 84)
                    147: (defconst byte-eqlsign 85)
                    148: (defconst byte-gtr 86)
                    149: (defconst byte-lss 87)
                    150: (defconst byte-leq 88)
                    151: (defconst byte-geq 89)
                    152: (defconst byte-diff 90)
                    153: (defconst byte-negate 91)
                    154: (defconst byte-plus 92)
                    155: (defconst byte-max 93)
                    156: (defconst byte-min 94)
                    157: 
                    158: (defconst byte-point 96)
                    159: ;(defconst byte-mark 97) no longer generated -- lisp code shouldn't call this very frequently
                    160: (defconst byte-goto-char 98)
                    161: (defconst byte-insert 99)
                    162: (defconst byte-point-max 100)
                    163: (defconst byte-point-min 101)
                    164: (defconst byte-char-after 102)
                    165: (defconst byte-following-char 103)
                    166: (defconst byte-preceding-char 104)
                    167: (defconst byte-current-column 105)
                    168: (defconst byte-indent-to 106)
                    169: ;(defconst byte-scan-buffer 107) no longer generated
                    170: (defconst byte-eolp 108)
                    171: (defconst byte-eobp 109)
                    172: (defconst byte-bolp 110)
                    173: (defconst byte-bobp 111)
                    174: (defconst byte-current-buffer 112)
                    175: (defconst byte-set-buffer 113)
                    176: (defconst byte-read-char 114)
                    177: ;(defconst byte-set-mark 115)       ;obsolete
                    178: (defconst byte-interactive-p 116)
                    179: 
                    180: (defun byte-recompile-directory (directory &optional arg)
                    181:   "Recompile every .el file in DIRECTORY that needs recompilation.
                    182: This is if a .elc file exists but is older than the .el file.
                    183: If the .elc file does not exist, offer to compile the .el file
                    184: only if a prefix argument has been specified." 
                    185:   (interactive "DByte recompile directory: \nP")
                    186:   (save-some-buffers)
                    187:   (setq directory (expand-file-name directory))
                    188:   (let ((files (directory-files directory nil "\\.el\\'"))
                    189:        (count 0)
                    190:        source dest)
                    191:     (while files
                    192:       (if (and (not (auto-save-file-name-p (car files)))
                    193:               (setq source (expand-file-name (car files) directory))
                    194:               (setq dest (concat (file-name-sans-versions source) "c"))
                    195:               (if (file-exists-p dest)
                    196:                   (file-newer-than-file-p source dest)
                    197:                   (and arg (y-or-n-p (concat "Compile " source "? ")))))
                    198:          (progn (byte-compile-file source)
                    199:                 (setq count (1+ count))))
                    200:       (setq files (cdr files)))
                    201:     (message "Done (Total of %d file%s compiled)"
                    202:             count (if (= count 1) "" "s"))))
                    203: 
                    204: (defun byte-compile-file (filename)
                    205:   "Compile a file of Lisp code named FILENAME into a file of byte code.
                    206: The output file's name is made by appending \"c\" to the end of FILENAME."
                    207:   (interactive "fByte compile file: ")
                    208:   ;; Expand now so we get the current buffer's defaults
                    209:   (setq filename (expand-file-name filename))
                    210:   (message "Compiling %s..." filename)
                    211:   (let ((inbuffer (get-buffer-create " *Compiler Input*"))
                    212:        (outbuffer (get-buffer-create " *Compiler Output*"))
                    213:        (byte-compile-macro-environment nil)
                    214:        (case-fold-search nil)
                    215:        sexp)
                    216:     (save-excursion
                    217:       (set-buffer inbuffer)
                    218:       (erase-buffer)
                    219:       (insert-file-contents filename)
                    220:       (goto-char 1)
                    221:       (set-buffer outbuffer)
                    222:       (emacs-lisp-mode)
                    223:       (erase-buffer)
                    224:       (while (save-excursion
                    225:               (set-buffer inbuffer)
                    226:               (while (progn (skip-chars-forward " \t\n\^l")
                    227:                             (looking-at ";"))
                    228:                 (forward-line 1))
                    229:               (not (eobp)))
                    230:        (setq sexp (read inbuffer))
                    231:        (print (byte-compile-file-form sexp) outbuffer))
                    232:       (set-buffer outbuffer)
                    233:       (goto-char 1)
                    234:       ;; In each defun or autoload, if there is a doc string,
                    235:       ;; put a backslash-newline at the front of it.
                    236:       (while (search-forward "\n(" nil t)
                    237:        (cond ((looking-at "defun \\|autoload ")
                    238:               (forward-sexp 3)
                    239:               (skip-chars-forward " ")
                    240:               (if (looking-at "\"")
                    241:                   (progn (forward-char 1)
                    242:                          (insert "\\\n"))))))
                    243:       (goto-char 1)
                    244:       ;; In each defconst or defvar, if there is a doc string
                    245:       ;; and it starts on the same line as the form begins
                    246:       ;; (i.e. if there is no newline in a string in the initial value)
                    247:       ;; then put in backslash-newline at the start of the doc string.
                    248:       (while (search-forward "\n(" nil t)
                    249:        (if (looking-at "defvar \\|defconst ")
                    250:            (let ((this-line (1- (point))))
                    251:              ;;Go to end of initial value expression
                    252:              (if (condition-case ()
                    253:                      (progn (forward-sexp 3) t)
                    254:                    (error nil))
                    255:                  (progn
                    256:                    (skip-chars-forward " ")
                    257:                    (and (eq this-line
                    258:                             (save-excursion (beginning-of-line) (point)))
                    259:                         (looking-at "\"")
                    260:                         (progn (forward-char 1)
                    261:                                (insert "\\\n"))))))))
                    262:       (let ((vms-stmlf-recfm t))
                    263:        (write-region 1 (point-max)
                    264:                      (concat (file-name-sans-versions filename) "c")))
                    265:       (kill-buffer (current-buffer))
                    266:       (kill-buffer inbuffer)))
                    267:   t)
                    268: 
                    269: 
                    270: (defun byte-compile-file-form (form)
                    271:   (cond ((not (listp form))
                    272:         form)
                    273:        ((memq (car form) '(defun defmacro))
                    274:         (let* ((name (car (cdr form)))
                    275:                (tem (assq name byte-compile-macro-environment)))
                    276:           (if (eq (car form) 'defun)
                    277:               (progn
                    278:                 (message "Compiling %s (%s)..." filename (nth 1 form))
                    279:                 (cond (tem (setcdr tem nil))
                    280:                       ((and (fboundp name)
                    281:                             (eq (car-safe (symbol-function name)) 'macro))
                    282:                        ;; shadow existing macro definition
                    283:                        (setq byte-compile-macro-environment
                    284:                              (cons (cons name nil)
                    285:                                    byte-compile-macro-environment))))
                    286:                 (prog1 (cons 'defun (byte-compile-lambda (cdr form)))
                    287:                   (if (not noninteractive)
                    288:                       (message "Compiling %s..." filename))))
                    289:             ;; defmacro
                    290:             (if tem
                    291:                 (setcdr tem (cons 'lambda (cdr (cdr form))))
                    292:               (setq byte-compile-macro-environment
                    293:                     (cons (cons name (cons 'lambda (cdr (cdr form))))
                    294:                           byte-compile-macro-environment)))
                    295:             (cons 'defmacro (byte-compile-lambda (cdr form))))))
                    296:        ((eq (car form) 'require)
                    297:         (eval form)
                    298:         form)
                    299:        (t form)))
                    300: 
                    301: (defun byte-compile (funname)
                    302:   "Byte-compile the definition of function FUNNAME (a symbol)."
                    303:   (if (and (fboundp funname)
                    304:           (eq (car-safe (symbol-function funname)) 'lambda))
                    305:       (fset funname (byte-compile-lambda (symbol-function funname)))))
                    306: 
                    307: (defun byte-compile-lambda (fun)
                    308:   (let* ((bodyptr (cdr fun))
                    309:         (int (assq 'interactive (cdr bodyptr)))
                    310:         newbody)
                    311:     ;; Skip doc string.
                    312:     (if (stringp (car (cdr bodyptr)))
                    313:        (setq bodyptr (cdr bodyptr)))
                    314:     (setq newbody (list (byte-compile-top-level
                    315:                          (cons 'progn (cdr bodyptr)))))
                    316:     (if int
                    317:        (setq newbody (cons (if (or (stringp (car (cdr int)))
                    318:                                    (null (car (cdr int))))
                    319:                                int
                    320:                              (list 'interactive
                    321:                                    (byte-compile-top-level (car (cdr int)))))
                    322:                            newbody)))
                    323:     (if (not (eq bodyptr (cdr fun)))
                    324:        (setq newbody (cons (nth 2 fun) newbody)))
                    325:     (cons (car fun) (cons (car (cdr fun)) newbody))))
                    326: 
                    327: (defun byte-compile-top-level (form)
                    328:   (let ((byte-compile-constants nil)
                    329:        (byte-compile-constnum nil)
                    330:        (byte-compile-pc 0)
                    331:        (byte-compile-depth 0)
                    332:        (byte-compile-maxdepth 0)
                    333:        (byte-compile-output nil)
                    334:        (byte-compile-string nil)
                    335:        (byte-compile-vector nil))
                    336:     (let (vars temp (i -1))
                    337:       (setq temp (byte-compile-find-vars form))
                    338:       (setq form (car temp))
                    339:       (setq vars (nreverse (cdr temp)))
                    340:       (while vars
                    341:        (setq i (1+ i))
                    342:        (setq byte-compile-constants (cons (cons (car vars) i)
                    343:                                           byte-compile-constants))
                    344:        (setq vars (cdr vars)))
                    345:       (setq byte-compile-constnum i))
                    346:     (byte-compile-form form)
                    347:     (byte-compile-out 'byte-return 0)
                    348:     (setq byte-compile-vector (make-vector (1+ byte-compile-constnum)
                    349:                                           nil))
                    350:     (while byte-compile-constants
                    351:       (aset byte-compile-vector (cdr (car byte-compile-constants))
                    352:            (car (car byte-compile-constants)))
                    353:       (setq byte-compile-constants (cdr byte-compile-constants)))
                    354:     (setq byte-compile-string (make-string byte-compile-pc 0))
                    355:     (while byte-compile-output
                    356:       (aset byte-compile-string (car (car byte-compile-output))
                    357:            (cdr (car byte-compile-output)))
                    358:       (setq byte-compile-output (cdr byte-compile-output)))
                    359:     (list 'byte-code byte-compile-string
                    360:                     byte-compile-vector byte-compile-maxdepth)))
                    361: 
                    362: ;; Expand all macros in FORM and find all variables it uses.
                    363: ;; Return a pair (EXPANDEDFORM . VARS)
                    364: ;; VARS is ordered with the variables encountered earliest
                    365: ;; at the end.
                    366: ;; The body and cases of a condition-case, and the body of a catch,
                    367: ;; are not scanned; variables used in them are not reported,
                    368: ;; and they are not macroexpanded.  This is because they will
                    369: ;; be compiled separately when encountered during the main
                    370: ;; compilation pass.
                    371: (defun byte-compile-find-vars (form)
                    372:   (let ((all-vars nil))
                    373:     (cons (byte-compile-find-vars-1 form)
                    374:          all-vars)))
                    375: 
                    376: ;; Walk FORM, making sure all variables it uses are in ALL-VARS,
                    377: ;; and also expanding macros.
                    378: ;; Return the result of expanding all macros in FORM.
                    379: ;; This is a copy; FORM itself is not altered.
                    380: (defun byte-compile-find-vars-1 (form)
                    381:   (cond ((symbolp form)
                    382:         (if (not (memq form all-vars))
                    383:             (setq all-vars (cons form all-vars)))
                    384:         form)
                    385:        ((or (not (consp form)) (eq (car form) 'quote))
                    386:         form)
                    387:        ((memq (car form) '(let let*))
                    388:         (let* ((binds (copy-sequence (car (cdr form))))
                    389:                (body (cdr (cdr form)))
                    390:                (tail binds))
                    391:           (while tail
                    392:             (if (symbolp (car tail))
                    393:                 (if (not (memq (car tail) all-vars))
                    394:                     (setq all-vars (cons (car tail) all-vars)))
                    395:               (if (consp (car tail))
                    396:                   (progn
                    397:                     (if (not (memq (car (car tail)) all-vars))
                    398:                         (setq all-vars (cons (car (car tail)) all-vars)))
                    399:                     (setcar tail
                    400:                             (list (car (car tail))
                    401:                                   (byte-compile-find-vars-1 (car (cdr (car tail)))))))))
                    402:             (setq tail (cdr tail)))
                    403:           (cons (car form)
                    404:                 (cons binds
                    405:                       (mapcar 'byte-compile-find-vars-1 body)))))
                    406:        ((or (eq (car form) 'function)
                    407:             ;; Because condition-case is compiled by breaking out
                    408:             ;; all its subexpressions and compiling them separately,
                    409:             ;; we regard it here as containing nothing but constants.
                    410:             (eq (car form) 'condition-case))
                    411:         form)
                    412:        ((eq (car form) 'catch)
                    413:         ;; catch is almost like condition case, but we
                    414:         ;; treat its first argument normally.
                    415:         (cons 'catch
                    416:               (cons (byte-compile-find-vars-1 (nth 1 form))
                    417:                     (nthcdr 2 form))))
                    418:        ((eq (car form) 'cond)
                    419:         (let* ((clauses (copy-sequence (cdr form)))
                    420:                (tail clauses))
                    421:           (while tail
                    422:             (setcar tail (mapcar 'byte-compile-find-vars-1 (car tail)))
                    423:             (setq tail (cdr tail)))
                    424:           (cons 'cond clauses)))
                    425:        ((not (eq form (setq form (macroexpand form byte-compile-macro-environment))))
                    426:         (byte-compile-find-vars-1 form))
                    427:        ((symbolp (car form))
                    428:         (cons (car form) (mapcar 'byte-compile-find-vars-1 (cdr form))))
                    429:        (t (mapcar 'byte-compile-find-vars-1 form))))
                    430: 
                    431: ;; This is the recursive entry point for compiling each subform of an expression.
                    432: 
                    433: ;; Note that handler functions SHOULD NOT increment byte-compile-depth
                    434: ;; for the values they are returning!  That is done on return here.
                    435: ;; Handlers should make sure that the depth on exit is the same as
                    436: ;; it was when the handler was called.
                    437: 
                    438: (defun byte-compile-form (form)
                    439:   (setq form (macroexpand form byte-compile-macro-environment))
                    440:   (cond ((eq form 'nil)
                    441:         (byte-compile-constant form))
                    442:        ((eq form 't)
                    443:         (byte-compile-constant form))
                    444:        ((symbolp form)
                    445:         (byte-compile-variable-ref 'byte-varref form))
                    446:        ((not (consp form))
                    447:         (byte-compile-constant form))
                    448:        (t
                    449:         (let ((handler (get (car form) 'byte-compile)))
                    450:           (if handler
                    451:               (funcall handler form)
                    452:             (byte-compile-normal-call form)))))
                    453:   (setq byte-compile-maxdepth
                    454:        (max byte-compile-maxdepth
                    455:             (setq byte-compile-depth (1+ byte-compile-depth)))))
                    456: 
                    457: (defun byte-compile-normal-call (form)
                    458:   (byte-compile-push-constant (car form))
                    459:   (let ((copy (cdr form)))
                    460:     (while copy (byte-compile-form (car copy)) (setq copy (cdr copy))))
                    461:   (byte-compile-out 'byte-call (length (cdr form)))
                    462:   (setq byte-compile-depth (- byte-compile-depth (length (cdr form)))))
                    463: 
                    464: (defun byte-compile-variable-ref (base-op var)
                    465:   (let ((data (assq var byte-compile-constants)))
                    466:     (if data
                    467:        (byte-compile-out base-op (cdr data))
                    468:       (error (format "Variable %s seen on pass 2 of byte compiler but not pass 1"
                    469:                     (prin1-to-string var))))))
                    470: 
                    471: ;; Use this when the value of a form is a constant,
                    472: ;; because byte-compile-depth will be incremented accordingly
                    473: ;; on return to byte-compile-form, so it should not be done by the handler.
                    474: (defun byte-compile-constant (const)
                    475:   (let ((data (if (stringp const)
                    476:                  (assoc const byte-compile-constants)
                    477:                (assq const byte-compile-constants))))
                    478:     (if data
                    479:        (byte-compile-out-const (cdr data))
                    480:       (setq byte-compile-constants
                    481:            (cons (cons const (setq byte-compile-constnum (1+ byte-compile-constnum)))
                    482:                  byte-compile-constants))
                    483:       (byte-compile-out-const byte-compile-constnum))))
                    484: 
                    485: ;; Use this for a constant that is not the value of its containing form.
                    486: ;; Note that the calling function must explicitly decrement byte-compile-depth
                    487: ;; (or perhaps call byte-compile-discard to do so)
                    488: ;; for the word pushed by this function.
                    489: (defun byte-compile-push-constant (const)
                    490:   (byte-compile-constant const)
                    491:   (setq byte-compile-maxdepth
                    492:        (max byte-compile-maxdepth
                    493:             (setq byte-compile-depth (1+ byte-compile-depth)))))
                    494: 
                    495: ;; Compile those primitive ordinary functions
                    496: ;; which have special byte codes just for speed.
                    497: 
                    498: (put 'point 'byte-compile 'byte-compile-no-args)
                    499: (put 'point 'byte-opcode 'byte-point)
                    500: 
                    501: (put 'dot 'byte-compile 'byte-compile-no-args)
                    502: (put 'dot 'byte-opcode 'byte-point)
                    503: 
                    504: ;(put 'mark 'byte-compile 'byte-compile-no-args)
                    505: ;(put 'mark 'byte-opcode 'byte-mark)
                    506: 
                    507: (put 'point-max 'byte-compile 'byte-compile-no-args)
                    508: (put 'point-max 'byte-opcode 'byte-point-max)
                    509: 
                    510: (put 'point-min 'byte-compile 'byte-compile-no-args)
                    511: (put 'point-min 'byte-opcode 'byte-point-min)
                    512: 
                    513: (put 'dot-max 'byte-compile 'byte-compile-no-args)
                    514: (put 'dot-max 'byte-opcode 'byte-point-max)
                    515: 
                    516: (put 'dot-min 'byte-compile 'byte-compile-no-args)
                    517: (put 'dot-min 'byte-opcode 'byte-point-min)
                    518: 
                    519: (put 'following-char 'byte-compile 'byte-compile-no-args)
                    520: (put 'following-char 'byte-opcode 'byte-following-char)
                    521: 
                    522: (put 'preceding-char 'byte-compile 'byte-compile-no-args)
                    523: (put 'preceding-char 'byte-opcode 'byte-preceding-char)
                    524: 
                    525: (put 'current-column 'byte-compile 'byte-compile-no-args)
                    526: (put 'current-column 'byte-opcode 'byte-current-column)
                    527: 
                    528: (put 'eolp 'byte-compile 'byte-compile-no-args)
                    529: (put 'eolp 'byte-opcode 'byte-eolp)
                    530: 
                    531: (put 'eobp 'byte-compile 'byte-compile-no-args)
                    532: (put 'eobp 'byte-opcode 'byte-eobp)
                    533: 
                    534: (put 'bolp 'byte-compile 'byte-compile-no-args)
                    535: (put 'bolp 'byte-opcode 'byte-bolp)
                    536: 
                    537: (put 'bobp 'byte-compile 'byte-compile-no-args)
                    538: (put 'bobp 'byte-opcode 'byte-bobp)
                    539: 
                    540: (put 'current-buffer 'byte-compile 'byte-compile-no-args)
                    541: (put 'current-buffer 'byte-opcode 'byte-current-buffer)
                    542: 
                    543: (put 'read-char 'byte-compile 'byte-compile-no-args)
                    544: (put 'read-char 'byte-opcode 'byte-read-char)
                    545: 
                    546: 
                    547: (put 'symbolp 'byte-compile 'byte-compile-one-arg)
                    548: (put 'symbolp 'byte-opcode 'byte-symbolp)
                    549: 
                    550: (put 'consp 'byte-compile 'byte-compile-one-arg)
                    551: (put 'consp 'byte-opcode 'byte-consp)
                    552: 
                    553: (put 'stringp 'byte-compile 'byte-compile-one-arg)
                    554: (put 'stringp 'byte-opcode 'byte-stringp)
                    555: 
                    556: (put 'listp 'byte-compile 'byte-compile-one-arg)
                    557: (put 'listp 'byte-opcode 'byte-listp)
                    558: 
                    559: (put 'not 'byte-compile 'byte-compile-one-arg)
                    560: (put 'not 'byte-opcode 'byte-not)
                    561: 
                    562: (put 'null 'byte-compile 'byte-compile-one-arg)
                    563: (put 'null 'byte-opcode 'byte-not)
                    564: 
                    565: (put 'car 'byte-compile 'byte-compile-one-arg)
                    566: (put 'car 'byte-opcode 'byte-car)
                    567: 
                    568: (put 'cdr 'byte-compile 'byte-compile-one-arg)
                    569: (put 'cdr 'byte-opcode 'byte-cdr)
                    570: 
                    571: (put 'length 'byte-compile 'byte-compile-one-arg)
                    572: (put 'length 'byte-opcode 'byte-length)
                    573: 
                    574: (put 'symbol-value 'byte-compile 'byte-compile-one-arg)
                    575: (put 'symbol-value 'byte-opcode 'byte-symbol-value)
                    576: 
                    577: (put 'symbol-function 'byte-compile 'byte-compile-one-arg)
                    578: (put 'symbol-function 'byte-opcode 'byte-symbol-function)
                    579: 
                    580: (put '1+ 'byte-compile 'byte-compile-one-arg)
                    581: (put '1+ 'byte-opcode 'byte-add1)
                    582: 
                    583: (put '1- 'byte-compile 'byte-compile-one-arg)
                    584: (put '1- 'byte-opcode 'byte-sub1)
                    585: 
                    586: (put 'goto-char 'byte-compile 'byte-compile-one-arg)
                    587: (put 'goto-char 'byte-opcode 'byte-goto-char)
                    588: 
                    589: (put 'char-after 'byte-compile 'byte-compile-one-arg)
                    590: (put 'char-after 'byte-opcode 'byte-char-after)
                    591: 
                    592: (put 'set-buffer 'byte-compile 'byte-compile-one-arg)
                    593: (put 'set-buffer 'byte-opcode 'byte-set-buffer)
                    594: 
                    595: ;set-mark turns out to be too unimportant for its own opcode.
                    596: ;(put 'set-mark 'byte-compile 'byte-compile-one-arg)
                    597: ;(put 'set-mark 'byte-opcode 'byte-set-mark)
                    598: 
                    599: 
                    600: (put 'eq 'byte-compile 'byte-compile-two-args)
                    601: (put 'eq 'byte-opcode 'byte-eq)
                    602: (put 'eql 'byte-compile 'byte-compile-two-args)
                    603: (put 'eql 'byte-opcode 'byte-eq)
                    604: 
                    605: (put 'memq 'byte-compile 'byte-compile-two-args)
                    606: (put 'memq 'byte-opcode 'byte-memq)
                    607: 
                    608: (put 'cons 'byte-compile 'byte-compile-two-args)
                    609: (put 'cons 'byte-opcode 'byte-cons)
                    610: 
                    611: (put 'aref 'byte-compile 'byte-compile-two-args)
                    612: (put 'aref 'byte-opcode 'byte-aref)
                    613: 
                    614: (put 'set 'byte-compile 'byte-compile-two-args)
                    615: (put 'set 'byte-opcode 'byte-set)
                    616: 
                    617: (put 'fset 'byte-compile 'byte-compile-two-args)
                    618: (put 'fset 'byte-opcode 'byte-fset)
                    619: 
                    620: (put '= 'byte-compile 'byte-compile-two-args)
                    621: (put '= 'byte-opcode 'byte-eqlsign)
                    622: 
                    623: (put '< 'byte-compile 'byte-compile-two-args)
                    624: (put '< 'byte-opcode 'byte-lss)
                    625: 
                    626: (put '> 'byte-compile 'byte-compile-two-args)
                    627: (put '> 'byte-opcode 'byte-gtr)
                    628: 
                    629: (put '<= 'byte-compile 'byte-compile-two-args)
                    630: (put '<= 'byte-opcode 'byte-leq)
                    631: 
                    632: (put '>= 'byte-compile 'byte-compile-two-args)
                    633: (put '>= 'byte-opcode 'byte-geq)
                    634: 
                    635: (put 'get 'byte-compile 'byte-compile-two-args)
                    636: (put 'get 'byte-opcode 'byte-get)
                    637: 
                    638: (put 'nth 'byte-compile 'byte-compile-two-args)
                    639: (put 'nth 'byte-opcode 'byte-nth)
                    640: 
                    641: (put 'aset 'byte-compile 'byte-compile-three-args)
                    642: (put 'aset 'byte-opcode 'byte-aset)
                    643: 
                    644: (defun byte-compile-no-args (form)
                    645:   (if (/= (length form) 1)
                    646:       ;; get run-time wrong-number-of-args error.
                    647:       ;; Would be nice if there were some way to do
                    648:       ;;  compile-time warnings.
                    649:       (byte-compile-normal-call form)
                    650:     (byte-compile-out (symbol-value (get (car form) 'byte-opcode)) 0)))
                    651: 
                    652: (defun byte-compile-one-arg (form)
                    653:   (if (/= (length form) 2)
                    654:       (byte-compile-normal-call form)
                    655:     (byte-compile-form (car (cdr form)))  ;; Push the argument
                    656:     (setq byte-compile-depth (1- byte-compile-depth))
                    657:     (byte-compile-out (symbol-value (get (car form) 'byte-opcode)) 0)))
                    658: 
                    659: (defun byte-compile-two-args (form)
                    660:   (if (/= (length form) 3)
                    661:       (byte-compile-normal-call form)
                    662:     (byte-compile-form (car (cdr form)))  ;; Push the arguments
                    663:     (byte-compile-form (nth 2 form))
                    664:     (setq byte-compile-depth (- byte-compile-depth 2))
                    665:     (byte-compile-out (symbol-value (get (car form) 'byte-opcode)) 0)))
                    666: 
                    667: (defun byte-compile-three-args (form)
                    668:   (if (/= (length form) 4)
                    669:       (byte-compile-normal-call form)
                    670:     (byte-compile-form (car (cdr form)))  ;; Push the arguments
                    671:     (byte-compile-form (nth 2 form))
                    672:     (byte-compile-form (nth 3 form))
                    673:     (setq byte-compile-depth (- byte-compile-depth 3))
                    674:     (byte-compile-out (symbol-value (get (car form) 'byte-opcode)) 0)))
                    675: 
                    676: (put 'substring 'byte-compile 'byte-compile-substring)
                    677: (defun byte-compile-substring (form)
                    678:   (if (or (> (length form) 4)
                    679:          (< (length form) 2))
                    680:       (byte-compile-normal-call form)
                    681:     (byte-compile-form (nth 1 form))
                    682:     (byte-compile-form (or (nth 2 form) ''nil))        ;Optional arguments
                    683:     (byte-compile-form (or (nth 3 form) ''nil))
                    684:     (setq byte-compile-depth (- byte-compile-depth 3))
                    685:     (byte-compile-out byte-substring 0)))
                    686: 
                    687: (put 'interactive-p 'byte-compile 'byte-compile-interactive-p)
                    688: (defun byte-compile-interactive-p (form)
                    689:   (byte-compile-out byte-interactive-p 0))
                    690:   
                    691: (put 'list 'byte-compile 'byte-compile-list)
                    692: (defun byte-compile-list (form)
                    693:   (let ((len (length form)))
                    694:     (if (= len 1)
                    695:        (byte-compile-constant nil)
                    696:       (if (< len 6)
                    697:          (let ((args (cdr form)))
                    698:           (while args
                    699:             (byte-compile-form (car args))
                    700:             (setq args (cdr args)))
                    701:           (setq byte-compile-depth (- byte-compile-depth (1- len)))
                    702:           (byte-compile-out (symbol-value
                    703:                              (nth (- len 2)
                    704:                                   '(byte-list1 byte-list2 byte-list3 byte-list4)))
                    705:                             0))
                    706:        (byte-compile-normal-call form)))))
                    707: 
                    708: (put 'concat 'byte-compile 'byte-compile-concat)
                    709: (defun byte-compile-concat (form)
                    710:   (let ((len (length form)))
                    711:     (cond ((= len 1)
                    712:           (byte-compile-form ""))
                    713:          ((= len 2)
                    714:           ;; Concat of one arg is not a no-op if arg is not a string.
                    715:           (byte-compile-normal-call form))
                    716:          ((< len 6)
                    717:           (let ((args (cdr form)))
                    718:             (while args
                    719:               (byte-compile-form (car args))
                    720:               (setq args (cdr args)))
                    721:             (setq byte-compile-depth (- byte-compile-depth (1- len)))
                    722:             (byte-compile-out
                    723:               (symbol-value (nth (- len 3)
                    724:                                  '(byte-concat2 byte-concat3 byte-concat4)))
                    725:               0)))
                    726:          (t
                    727:           (byte-compile-normal-call form)))))
                    728: 
                    729: (put '- 'byte-compile 'byte-compile-minus)
                    730: (defun byte-compile-minus (form)
                    731:   (let ((len (length form)))
                    732:     (cond ((= len 2)
                    733:           (byte-compile-form (car (cdr form)))
                    734:           (setq byte-compile-depth (- byte-compile-depth 1))
                    735:           (byte-compile-out byte-negate 0))
                    736:          ((= len 3)
                    737:           (byte-compile-form (car (cdr form)))
                    738:           (byte-compile-form (nth 2 form))
                    739:           (setq byte-compile-depth (- byte-compile-depth 2))
                    740:           (byte-compile-out byte-diff 0))
                    741:          (t (byte-compile-normal-call form)))))
                    742: 
                    743: (put '+ 'byte-compile 'byte-compile-maybe-two-args)
                    744: (put '+ 'byte-opcode 'byte-plus)
                    745: 
                    746: (put 'max 'byte-compile 'byte-compile-maybe-two-args)
                    747: (put 'max 'byte-opcode 'byte-max)
                    748: 
                    749: (put 'min 'byte-compile 'byte-compile-maybe-two-args)
                    750: (put 'min 'byte-opcode 'byte-min)
                    751: 
                    752: (defun byte-compile-maybe-two-args (form)
                    753:   (let ((len (length form)))
                    754:     (if (= len 3)
                    755:        (progn
                    756:          (byte-compile-form (car (cdr form)))
                    757:          (byte-compile-form (nth 2 form))
                    758:          (setq byte-compile-depth (- byte-compile-depth 2))
                    759:          (byte-compile-out (symbol-value (get (car form) 'byte-opcode)) 0))
                    760:       (byte-compile-normal-call form))))
                    761:        
                    762: (put 'function 'byte-compile 'byte-compile-function-form)
                    763: (defun byte-compile-function-form (form)
                    764:   (cond ((symbolp (car (cdr form)))
                    765:         (byte-compile-form
                    766:          (list 'symbol-function (list 'quote (nth 1 form)))))
                    767:        (t
                    768:         (byte-compile-constant (byte-compile-lambda (car (cdr form)))))))
                    769: 
                    770: (put 'indent-to 'byte-compile 'byte-compile-indent-to)
                    771: (defun byte-compile-indent-to (form)
                    772:   (let ((len (length form)))
                    773:     (if (= len 2)
                    774:        (progn
                    775:          (byte-compile-form (car (cdr form)))
                    776:          (setq byte-compile-depth (- byte-compile-depth 1))
                    777:          (byte-compile-out byte-indent-to 0))
                    778:       (byte-compile-normal-call form))))
                    779: 
                    780: (put 'insert 'byte-compile 'byte-compile-insert)
                    781: (defun byte-compile-insert (form)
                    782:   (let ((len (length form)))
                    783:     (if (< len 3)
                    784:        (let ((args (cdr form)))
                    785:          (while args
                    786:            (byte-compile-form (car args))
                    787:            (setq byte-compile-depth (- byte-compile-depth 1))
                    788:            (byte-compile-out byte-insert 0)
                    789:            (setq args (cdr args))))
                    790:       (byte-compile-normal-call form))))
                    791: 
                    792: (put 'setq-default 'byte-compile 'byte-compile-setq-default)
                    793: (defun byte-compile-setq-default (form)
                    794:   (byte-compile-form (cons 'set-default (cons (list 'quote (nth 1 form))
                    795:                                              (nthcdr 2 form)))))
                    796: 
                    797: (put 'quote 'byte-compile 'byte-compile-quote)
                    798: (defun byte-compile-quote (form)
                    799:   (byte-compile-constant (car (cdr form))))
                    800: 
                    801: (put 'setq 'byte-compile 'byte-compile-setq)
                    802: (defun byte-compile-setq (form)
                    803:   (let ((args (cdr form)))
                    804:     (if args
                    805:        (while args
                    806:          (byte-compile-form (car (cdr args)))
                    807:          (if (null (cdr (cdr args)))
                    808:              (progn
                    809:                (byte-compile-out 'byte-dup 0)
                    810:                (setq byte-compile-maxdepth (max byte-compile-maxdepth (1+ byte-compile-depth)))))
                    811:          (setq byte-compile-depth (1- byte-compile-depth))
                    812:          (byte-compile-variable-ref 'byte-varset (car args))
                    813:          (setq args (cdr (cdr args))))
                    814:       ;; (setq), with no arguments.
                    815:       (byte-compile-constant nil))))
                    816: 
                    817: (put 'let 'byte-compile 'byte-compile-let)
                    818: (defun byte-compile-let (form)
                    819:   (let ((varlist (car (cdr form))))
                    820:     (while varlist
                    821:       (if (symbolp (car varlist))
                    822:          (byte-compile-push-constant nil)
                    823:        (byte-compile-form (car (cdr (car varlist)))))
                    824:       (setq varlist (cdr varlist))))
                    825:   (let ((varlist (reverse (car (cdr form)))))
                    826:     (setq byte-compile-depth (- byte-compile-depth (length varlist)))
                    827:     (while varlist
                    828:       (if (symbolp (car varlist))
                    829:          (byte-compile-variable-ref 'byte-varbind (car varlist))
                    830:        (byte-compile-variable-ref 'byte-varbind (car (car varlist))))
                    831:       (setq varlist (cdr varlist))))
                    832:   (byte-compile-body (cdr (cdr form)))
                    833:   (byte-compile-out 'byte-unbind (length (car (cdr form)))))
                    834: 
                    835: (put 'let* 'byte-compile 'byte-compile-let*)
                    836: (defun byte-compile-let* (form)
                    837:   (let ((varlist (car (cdr form))))
                    838:     (while varlist
                    839:       (if (symbolp (car varlist))
                    840:          (byte-compile-push-constant nil)
                    841:        (byte-compile-form (car (cdr (car varlist)))))
                    842:       (setq byte-compile-depth (1- byte-compile-depth))
                    843:       (if (symbolp (car varlist))
                    844:          (byte-compile-variable-ref 'byte-varbind (car varlist))
                    845:        (byte-compile-variable-ref 'byte-varbind (car (car varlist))))
                    846:       (setq varlist (cdr varlist))))
                    847:   (byte-compile-body (cdr (cdr form)))
                    848:   (byte-compile-out 'byte-unbind (length (car (cdr form)))))
                    849: 
                    850: (put 'save-excursion 'byte-compile 'byte-compile-save-excursion)
                    851: (defun byte-compile-save-excursion (form)
                    852:   (byte-compile-out 'byte-save-excursion 0)
                    853:   (byte-compile-body (cdr form))
                    854:   (byte-compile-out 'byte-unbind 1))
                    855: 
                    856: (put 'save-restriction 'byte-compile 'byte-compile-save-restriction)
                    857: (defun byte-compile-save-restriction (form)
                    858:   (byte-compile-out 'byte-save-restriction 0)
                    859:   (byte-compile-body (cdr form))
                    860:   (byte-compile-out 'byte-unbind 1))
                    861: 
                    862: (put 'with-output-to-temp-buffer 'byte-compile 'byte-compile-with-output-to-temp-buffer)
                    863: (defun byte-compile-with-output-to-temp-buffer (form)
                    864:   (byte-compile-form (car (cdr form)))
                    865:   (byte-compile-out 'byte-temp-output-buffer-setup 0)
                    866:   (byte-compile-body (cdr (cdr form)))
                    867:   (byte-compile-out 'byte-temp-output-buffer-show 0)
                    868:   (setq byte-compile-depth (1- byte-compile-depth)))
                    869: 
                    870: (put 'progn 'byte-compile 'byte-compile-progn)
                    871: (defun byte-compile-progn (form)
                    872:   (byte-compile-body (cdr form)))
                    873: 
                    874: (put 'interactive 'byte-compile 'byte-compile-noop)
                    875: (defun byte-compile-noop (form)
                    876:   (byte-compile-constant nil))
                    877: 
                    878: (defun byte-compile-body (body)
                    879:   (if (null body)
                    880:       (byte-compile-constant nil)
                    881:     (while body
                    882:       (byte-compile-form (car body))
                    883:       (if (cdr body)
                    884:          (byte-compile-discard)
                    885:        ;; Convention is this will be counted after we return.
                    886:        (setq byte-compile-depth (1- byte-compile-depth)))
                    887:       (setq body (cdr body)))))
                    888: 
                    889: (put 'prog1 'byte-compile 'byte-compile-prog1)
                    890: (defun byte-compile-prog1 (form)
                    891:   (byte-compile-form (car (cdr form)))
                    892:   (if (cdr (cdr form))
                    893:       (progn
                    894:        (byte-compile-body (cdr (cdr form)))
                    895:        ;; This discards the value pushed by ..-body
                    896:        ;; (which is not counted now in byte-compile-depth)
                    897:        ;; and decrements byte-compile-depth for the value
                    898:        ;; pushed by byte-compile-form above, which by convention
                    899:        ;; will be counted in byte-compile-depth after we return.
                    900:        (byte-compile-discard))))
                    901: 
                    902: (put 'prog2 'byte-compile 'byte-compile-prog2)
                    903: (defun byte-compile-prog2 (form)
                    904:   (byte-compile-form (car (cdr form)))
                    905:   (byte-compile-discard)
                    906:   (byte-compile-form (nth 2 form))
                    907:   (if (cdr (cdr (cdr form)))
                    908:       (progn
                    909:        (byte-compile-body (cdr (cdr (cdr form))))
                    910:        (byte-compile-discard))))
                    911: 
                    912: (defun byte-compile-discard ()
                    913:   (byte-compile-out 'byte-discard 0)
                    914:   (setq byte-compile-depth (1- byte-compile-depth)))
                    915: 
                    916: (put 'if 'byte-compile 'byte-compile-if)
                    917: (defun byte-compile-if (form)
                    918:   (if (null (nthcdr 3 form))
                    919:       ;; No else-forms
                    920:       (let ((donetag (byte-compile-make-tag)))
                    921:        (byte-compile-form (car (cdr form)))
                    922:        (byte-compile-goto 'byte-goto-if-nil-else-pop donetag)
                    923:        (setq byte-compile-depth (1- byte-compile-depth))
                    924:        (byte-compile-form (nth 2 form))
                    925:        (setq byte-compile-depth (1- byte-compile-depth))
                    926:        (byte-compile-out-tag donetag))
                    927:     (let ((donetag (byte-compile-make-tag)) (elsetag (byte-compile-make-tag)))
                    928:       (byte-compile-form (car (cdr form)))
                    929:       (byte-compile-goto 'byte-goto-if-nil elsetag)
                    930:       (setq byte-compile-depth (1- byte-compile-depth))
                    931:       (byte-compile-form (nth 2 form))
                    932:       (setq byte-compile-depth (1- byte-compile-depth))
                    933:       (byte-compile-goto 'byte-goto donetag)
                    934:       (byte-compile-out-tag elsetag)
                    935:       (byte-compile-body (cdr (cdr (cdr form))))
                    936:       (byte-compile-out-tag donetag))))
                    937: 
                    938: (put 'cond 'byte-compile 'byte-compile-cond)
                    939: (defun byte-compile-cond (form)
                    940:   (if (cdr form)
                    941:       (byte-compile-cond-1 (cdr form))
                    942:     (byte-compile-constant nil)))
                    943: (defun byte-compile-cond-1 (clauses)
                    944:   (if (or (eq (car (car clauses)) t)
                    945:          (eq (car-safe (car (car clauses))) 'quote))
                    946:       ;; Unconditional clause
                    947:       (byte-compile-body (cdr (car clauses)))
                    948:     (if (null (cdr clauses))
                    949:        ;; Only one clause
                    950:        (let ((donetag (byte-compile-make-tag)))
                    951:          (byte-compile-form (car (car clauses)))
                    952:          (cond ((cdr (car clauses))
                    953:                 (byte-compile-goto 'byte-goto-if-nil-else-pop donetag)
                    954:                 (setq byte-compile-depth (1- byte-compile-depth))
                    955:                 (byte-compile-body (cdr (car clauses)))
                    956:                 (byte-compile-out-tag donetag))))
                    957:       (let ((donetag (byte-compile-make-tag))
                    958:            (elsetag (byte-compile-make-tag)))
                    959:        (byte-compile-form (car (car clauses)))
                    960:        (if (null (cdr (car clauses)))
                    961:            ;; First clause is a singleton.
                    962:            (progn
                    963:              (byte-compile-goto 'byte-goto-if-not-nil-else-pop donetag)
                    964:              (setq byte-compile-depth (1- byte-compile-depth)))
                    965:          (byte-compile-goto 'byte-goto-if-nil elsetag)
                    966:          (setq byte-compile-depth (1- byte-compile-depth))
                    967:          (byte-compile-body (cdr (car clauses)))
                    968:          (byte-compile-goto 'byte-goto donetag)
                    969:          (byte-compile-out-tag elsetag))
                    970:        (byte-compile-cond-1 (cdr clauses))
                    971:        (byte-compile-out-tag donetag)))))
                    972: 
                    973: (put 'and 'byte-compile 'byte-compile-and)
                    974: (defun byte-compile-and (form)
                    975:   (let ((failtag (byte-compile-make-tag))
                    976:        (args (cdr form)))
                    977:     (if (null args)
                    978:        (progn
                    979:          (byte-compile-form t)
                    980:          (setq byte-compile-depth (1- byte-compile-depth)))
                    981:       (while args
                    982:        (byte-compile-form (car args))
                    983:        (setq byte-compile-depth (1- byte-compile-depth))
                    984:        (if (null (cdr args))
                    985:            (byte-compile-out-tag failtag)
                    986:          (byte-compile-goto 'byte-goto-if-nil-else-pop failtag))
                    987:        (setq args (cdr args))))))
                    988: 
                    989: (put 'or 'byte-compile 'byte-compile-or)
                    990: (defun byte-compile-or (form)
                    991:   (let ((wintag (byte-compile-make-tag))
                    992:        (args (cdr form)))
                    993:     (if (null args)
                    994:        (byte-compile-constant nil)
                    995:       (while args
                    996:        (byte-compile-form (car args))
                    997:        (setq byte-compile-depth (1- byte-compile-depth))
                    998:        (if (null (cdr args))
                    999:            (byte-compile-out-tag wintag)
                   1000:          (byte-compile-goto 'byte-goto-if-not-nil-else-pop wintag))
                   1001:        (setq args (cdr args))))))
                   1002: 
                   1003: (put 'while 'byte-compile 'byte-compile-while)
                   1004: (defun byte-compile-while (form)
                   1005:   (let ((endtag (byte-compile-make-tag))
                   1006:        (looptag (byte-compile-make-tag))
                   1007:        (args (cdr (cdr form))))
                   1008:     (byte-compile-out-tag looptag)
                   1009:     (byte-compile-form (car (cdr form)))
                   1010:     (byte-compile-goto 'byte-goto-if-nil-else-pop endtag)
                   1011:     (byte-compile-body (cdr (cdr form)))
                   1012:     (byte-compile-discard)
                   1013:     (byte-compile-goto 'byte-goto looptag)
                   1014:     (byte-compile-out-tag endtag)))
                   1015: 
                   1016: (put 'catch 'byte-compile 'byte-compile-catch)
                   1017: (defun byte-compile-catch (form)
                   1018:   (byte-compile-form (car (cdr form)))
                   1019:   (byte-compile-push-constant (byte-compile-top-level (cons 'progn (cdr (cdr form)))))
                   1020:   (setq byte-compile-depth (- byte-compile-depth 2))
                   1021:   (byte-compile-out 'byte-catch 0))
                   1022: 
                   1023: (put 'save-window-excursion 'byte-compile 'byte-compile-save-window-excursion)
                   1024: (defun byte-compile-save-window-excursion (form)
                   1025:   (byte-compile-push-constant
                   1026:     (list (byte-compile-top-level (cons 'progn (cdr form)))))
                   1027:   (setq byte-compile-depth (1- byte-compile-depth))
                   1028:   (byte-compile-out 'byte-save-window-excursion 0))
                   1029: 
                   1030: (put 'unwind-protect 'byte-compile 'byte-compile-unwind-protect)
                   1031: (defun byte-compile-unwind-protect (form)
                   1032:   (byte-compile-push-constant
                   1033:     (list (byte-compile-top-level (cons 'progn (cdr (cdr form))))))
                   1034:   (setq byte-compile-depth (1- byte-compile-depth))
                   1035:   (byte-compile-out 'byte-unwind-protect 0)
                   1036:   (byte-compile-form (car (cdr form)))
                   1037:   (setq byte-compile-depth (1- byte-compile-depth))
                   1038:   (byte-compile-out 'byte-unbind 1))
                   1039: 
                   1040: (put 'condition-case 'byte-compile 'byte-compile-condition-case)
                   1041: (defun byte-compile-condition-case (form)
                   1042:   (byte-compile-push-constant (car (cdr form)))
                   1043:   (byte-compile-push-constant (byte-compile-top-level (nth 2 form)))
                   1044:   (let ((clauses (cdr (cdr (cdr form))))
                   1045:        compiled-clauses)
                   1046:     (while clauses
                   1047:       (let ((clause (car clauses)))
                   1048:        (setq compiled-clauses
                   1049:              (cons (list (car clause)
                   1050:                          (byte-compile-top-level (cons 'progn (cdr clause))))
                   1051:                    compiled-clauses)))
                   1052:       (setq clauses (cdr clauses)))
                   1053:     (byte-compile-push-constant (nreverse compiled-clauses)))
                   1054:   (setq byte-compile-depth (- byte-compile-depth 3))
                   1055:   (byte-compile-out 'byte-condition-case 0))
                   1056: 
                   1057: (defun byte-compile-make-tag ()
                   1058:   (cons nil nil))
                   1059: 
                   1060: (defun byte-compile-out-tag (tag)
                   1061:   (let ((uses (car tag)))
                   1062:     (setcar tag byte-compile-pc)
                   1063:     (while uses
                   1064:       (byte-compile-store-goto (car uses) byte-compile-pc)
                   1065:       (setq uses (cdr uses)))))
                   1066: 
                   1067: (defun byte-compile-goto (opcode tag)
                   1068:   (byte-compile-out opcode 0)
                   1069:   (if (integerp (car tag))
                   1070:       (byte-compile-store-goto byte-compile-pc (car tag))
                   1071:     (setcar tag (cons byte-compile-pc (car tag))))
                   1072:   (setq byte-compile-pc (+ byte-compile-pc 2)))
                   1073: 
                   1074: (defun byte-compile-store-goto (at-pc to-pc)
                   1075:   (setq byte-compile-output
                   1076:        (cons (cons at-pc (logand to-pc 255))
                   1077:              byte-compile-output))
                   1078:   (setq byte-compile-output
                   1079:        (cons (cons (1+ at-pc) (lsh to-pc -8))
                   1080:              byte-compile-output)))
                   1081: 
                   1082: (defun byte-compile-out (opcode offset)
                   1083:   (setq opcode (eval opcode))
                   1084:   (if (< offset 6)
                   1085:       (byte-compile-out-1 (+ opcode offset))
                   1086:     (if (< offset 256)
                   1087:        (progn
                   1088:          (byte-compile-out-1 (+ opcode 6))
                   1089:          (byte-compile-out-1 offset))
                   1090:       (byte-compile-out-1 (+ opcode 7))
                   1091:       (byte-compile-out-1 (logand offset 255))
                   1092:       (byte-compile-out-1 (lsh offset -8)))))
                   1093: 
                   1094: (defun byte-compile-out-const (offset)
                   1095:   (if (< offset byte-constant-limit)
                   1096:       (byte-compile-out-1 (+ byte-constant offset))
                   1097:     (byte-compile-out-1 byte-constant2)
                   1098:     (byte-compile-out-1 (logand offset 255))
                   1099:     (byte-compile-out-1 (lsh offset -8))))
                   1100: 
                   1101: (defun byte-compile-out-1 (code)
                   1102:   (setq byte-compile-output
                   1103:        (cons (cons byte-compile-pc code)
                   1104:              byte-compile-output))
                   1105:   (setq byte-compile-pc (1+ byte-compile-pc)))
                   1106: 
                   1107: ;;; by [email protected]
                   1108: ;;;  Only works noninteractively.
                   1109: (defun batch-byte-compile ()
                   1110:   "Runs byte-compile-file on the files remaining on the command line.
                   1111: Must be used only with -batch, and kills emacs on completion.
                   1112: Each file will be processed even if an error occurred previously.
                   1113: For example, invoke \"emacs -batch -f batch-byte-compile $emacs/ ~/*.el\""
                   1114:   ;; command-line-args-left is what is left of the command line (from startup.el)
                   1115:   (if (not noninteractive)
                   1116:       (error "batch-byte-compile is to be used only with -batch"))
                   1117:   (let ((error nil))
                   1118:     (while command-line-args-left
                   1119:       (if (file-directory-p (expand-file-name (car command-line-args-left)))
                   1120:          (let ((files (directory-files (car command-line-args-left)))
                   1121:                source dest)
                   1122:            (while files
                   1123:              (if (and (string-match ".el$" (car files))
                   1124:                       (not (auto-save-file-name-p (car files)))
                   1125:                       (setq source (expand-file-name (car files)
                   1126:                                                      (car command-line-args-left)))
                   1127:                       (setq dest (concat (file-name-sans-versions source) "c"))
                   1128:                       (file-exists-p dest)
                   1129:                       (file-newer-than-file-p source dest))
                   1130:                  (if (null (batch-byte-compile-file source))
                   1131:                      (setq error t)))
                   1132:              (setq files (cdr files))))
                   1133:        (if (null (batch-byte-compile-file (car command-line-args-left)))
                   1134:            (setq error t)))
                   1135:       (setq command-line-args-left (cdr command-line-args-left)))
                   1136:     (message "Done")
                   1137:     (kill-emacs (if error 1 0))))
                   1138: 
                   1139: (defun batch-byte-compile-file (file)
                   1140:   (condition-case err
                   1141:       (progn (byte-compile-file file) t)
                   1142:     (error
                   1143:      (message (if (cdr err)
                   1144:                  ">>Error occurred processing %s: %s (%s)"
                   1145:                  ">>Error occurred processing %s: %s")
                   1146:              file
                   1147:              (get (car err) 'error-message)
                   1148:              (prin1-to-string (cdr err)))
                   1149:      nil)))

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