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3fdc9c8f | 1 | ;;; ccl.el --- CCL (Code Conversion Language) compiler |
4ed46869 | 2 | |
4ed46869 | 3 | ;; Copyright (C) 1995 Electrotechnical Laboratory, JAPAN. |
fa526c4a | 4 | ;; Licensed to the Free Software Foundation. |
acb69425 | 5 | ;; Copyright (C) 2002 Free Software Foundation, Inc. |
4ed46869 KH |
6 | |
7 | ;; Keywords: CCL, mule, multilingual, character set, coding-system | |
8 | ||
9 | ;; This file is part of GNU Emacs. | |
10 | ||
11 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
12 | ;; it under the terms of the GNU General Public License as published by | |
13 | ;; the Free Software Foundation; either version 2, or (at your option) | |
14 | ;; any later version. | |
15 | ||
16 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
17 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | ;; GNU General Public License for more details. | |
20 | ||
21 | ;; You should have received a copy of the GNU General Public License | |
369314dc KH |
22 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
23 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
24 | ;; Boston, MA 02111-1307, USA. | |
4ed46869 KH |
25 | |
26 | ;;; Commentary: | |
27 | ||
28 | ;; CCL (Code Conversion Language) is a simple programming language to | |
acb69425 DL |
29 | ;; be used for various kind of code conversion. A CCL program is |
30 | ;; compiled to CCL code (vector of integers) and executed by the CCL | |
31 | ;; interpreter in Emacs. | |
4ed46869 KH |
32 | ;; |
33 | ;; CCL is used for code conversion at process I/O and file I/O for | |
acb69425 DL |
34 | ;; non-standard coding-systems. In addition, it is used for |
35 | ;; calculating code points of X fonts from character codes. | |
4ed46869 KH |
36 | ;; However, since CCL is designed as a powerful programming language, |
37 | ;; it can be used for more generic calculation. For instance, | |
38 | ;; combination of three or more arithmetic operations can be | |
acb69425 | 39 | ;; calculated faster than in Emacs Lisp. |
4ed46869 | 40 | ;; |
acb69425 | 41 | ;; The syntax and semantics of CCL programs are described in the |
07fd074e | 42 | ;; documentation of `define-ccl-program'. |
4ed46869 KH |
43 | |
44 | ;;; Code: | |
45 | ||
d876a0a0 SE |
46 | (defgroup ccl nil |
47 | "CCL (Code Conversion Language) compiler." | |
48 | :prefix "ccl-" | |
49 | :group 'i18n) | |
50 | ||
44d086b8 | 51 | (defconst ccl-command-table |
4ed46869 | 52 | [if branch loop break repeat write-repeat write-read-repeat |
6c7f6058 KH |
53 | read read-if read-branch write call end |
54 | read-multibyte-character write-multibyte-character | |
50443272 | 55 | translate-character |
acb69425 DL |
56 | iterate-multiple-map map-multiple map-single lookup-integer |
57 | lookup-character] | |
44d086b8 | 58 | "Vector of CCL commands (symbols).") |
4ed46869 KH |
59 | |
60 | ;; Put a property to each symbol of CCL commands for the compiler. | |
61 | (let (op (i 0) (len (length ccl-command-table))) | |
62 | (while (< i len) | |
63 | (setq op (aref ccl-command-table i)) | |
64 | (put op 'ccl-compile-function (intern (format "ccl-compile-%s" op))) | |
65 | (setq i (1+ i)))) | |
66 | ||
44d086b8 | 67 | (defconst ccl-code-table |
4ed46869 KH |
68 | [set-register |
69 | set-short-const | |
70 | set-const | |
71 | set-array | |
72 | jump | |
73 | jump-cond | |
74 | write-register-jump | |
75 | write-register-read-jump | |
76 | write-const-jump | |
77 | write-const-read-jump | |
78 | write-string-jump | |
79 | write-array-read-jump | |
80 | read-jump | |
81 | branch | |
82 | read-register | |
83 | write-expr-const | |
84 | read-branch | |
85 | write-register | |
86 | write-expr-register | |
87 | call | |
88 | write-const-string | |
89 | write-array | |
90 | end | |
91 | set-assign-expr-const | |
92 | set-assign-expr-register | |
93 | set-expr-const | |
94 | set-expr-register | |
95 | jump-cond-expr-const | |
96 | jump-cond-expr-register | |
97 | read-jump-cond-expr-const | |
98 | read-jump-cond-expr-register | |
6c7f6058 | 99 | ex-cmd |
4ed46869 | 100 | ] |
44d086b8 | 101 | "Vector of CCL compiled codes (symbols).") |
4ed46869 | 102 | |
44d086b8 | 103 | (defconst ccl-extended-code-table |
6c7f6058 KH |
104 | [read-multibyte-character |
105 | write-multibyte-character | |
50443272 KH |
106 | translate-character |
107 | translate-character-const-tbl | |
6c7f6058 KH |
108 | nil nil nil nil nil nil nil nil nil nil nil nil ; 0x04-0x0f |
109 | iterate-multiple-map | |
50443272 KH |
110 | map-multiple |
111 | map-single | |
acb69425 DL |
112 | lookup-int-const-tbl |
113 | lookup-char-const-tbl | |
6c7f6058 | 114 | ] |
44d086b8 | 115 | "Vector of CCL extended compiled codes (symbols).") |
6c7f6058 | 116 | |
4ed46869 KH |
117 | ;; Put a property to each symbol of CCL codes for the disassembler. |
118 | (let (code (i 0) (len (length ccl-code-table))) | |
119 | (while (< i len) | |
120 | (setq code (aref ccl-code-table i)) | |
121 | (put code 'ccl-code i) | |
122 | (put code 'ccl-dump-function (intern (format "ccl-dump-%s" code))) | |
123 | (setq i (1+ i)))) | |
124 | ||
6c7f6058 KH |
125 | (let (code (i 0) (len (length ccl-extended-code-table))) |
126 | (while (< i len) | |
127 | (setq code (aref ccl-extended-code-table i)) | |
128 | (if code | |
129 | (progn | |
130 | (put code 'ccl-ex-code i) | |
131 | (put code 'ccl-dump-function (intern (format "ccl-dump-%s" code))))) | |
132 | (setq i (1+ i)))) | |
133 | ||
4ed46869 KH |
134 | (defconst ccl-jump-code-list |
135 | '(jump jump-cond write-register-jump write-register-read-jump | |
136 | write-const-jump write-const-read-jump write-string-jump | |
137 | write-array-read-jump read-jump)) | |
138 | ||
139 | ;; Put a property `jump-flag' to each CCL code which execute jump in | |
140 | ;; some way. | |
141 | (let ((l ccl-jump-code-list)) | |
142 | (while l | |
143 | (put (car l) 'jump-flag t) | |
144 | (setq l (cdr l)))) | |
145 | ||
44d086b8 | 146 | (defconst ccl-register-table |
4ed46869 | 147 | [r0 r1 r2 r3 r4 r5 r6 r7] |
44d086b8 | 148 | "Vector of CCL registers (symbols).") |
4ed46869 KH |
149 | |
150 | ;; Put a property to indicate register number to each symbol of CCL. | |
151 | ;; registers. | |
152 | (let (reg (i 0) (len (length ccl-register-table))) | |
153 | (while (< i len) | |
154 | (setq reg (aref ccl-register-table i)) | |
155 | (put reg 'ccl-register-number i) | |
156 | (setq i (1+ i)))) | |
157 | ||
44d086b8 | 158 | (defconst ccl-arith-table |
4ed46869 KH |
159 | [+ - * / % & | ^ << >> <8 >8 // nil nil nil |
160 | < > == <= >= != de-sjis en-sjis] | |
44d086b8 | 161 | "Vector of CCL arithmetic/logical operators (symbols).") |
4ed46869 KH |
162 | |
163 | ;; Put a property to each symbol of CCL operators for the compiler. | |
164 | (let (arith (i 0) (len (length ccl-arith-table))) | |
165 | (while (< i len) | |
166 | (setq arith (aref ccl-arith-table i)) | |
167 | (if arith (put arith 'ccl-arith-code i)) | |
168 | (setq i (1+ i)))) | |
169 | ||
44d086b8 | 170 | (defconst ccl-assign-arith-table |
4ed46869 | 171 | [+= -= *= /= %= &= |= ^= <<= >>= <8= >8= //=] |
44d086b8 | 172 | "Vector of CCL assignment operators (symbols).") |
4ed46869 KH |
173 | |
174 | ;; Put a property to each symbol of CCL assignment operators for the compiler. | |
175 | (let (arith (i 0) (len (length ccl-assign-arith-table))) | |
176 | (while (< i len) | |
177 | (setq arith (aref ccl-assign-arith-table i)) | |
178 | (put arith 'ccl-self-arith-code i) | |
179 | (setq i (1+ i)))) | |
180 | ||
181 | (defvar ccl-program-vector nil | |
182 | "Working vector of CCL codes produced by CCL compiler.") | |
183 | (defvar ccl-current-ic 0 | |
184 | "The current index for `ccl-program-vector'.") | |
185 | ||
186 | ;; Embed integer DATA in `ccl-program-vector' at `ccl-current-ic' and | |
187 | ;; increment it. If IC is specified, embed DATA at IC. | |
188 | (defun ccl-embed-data (data &optional ic) | |
189 | (if ic | |
190 | (aset ccl-program-vector ic data) | |
ab3b1799 KH |
191 | (let ((len (length ccl-program-vector))) |
192 | (if (>= ccl-current-ic len) | |
193 | (let ((new (make-vector (* len 2) nil))) | |
194 | (while (> len 0) | |
195 | (setq len (1- len)) | |
196 | (aset new len (aref ccl-program-vector len))) | |
197 | (setq ccl-program-vector new)))) | |
4ed46869 KH |
198 | (aset ccl-program-vector ccl-current-ic data) |
199 | (setq ccl-current-ic (1+ ccl-current-ic)))) | |
200 | ||
982d2673 KH |
201 | ;; Embed pair of SYMBOL and PROP where (get SYMBOL PROP) should give |
202 | ;; proper index number for SYMBOL. PROP should be | |
acb69425 DL |
203 | ;; `translation-table-id', `translation-hash-table-id' |
204 | ;; `code-conversion-map-id', or `ccl-program-idx'. | |
982d2673 KH |
205 | (defun ccl-embed-symbol (symbol prop) |
206 | (ccl-embed-data (cons symbol prop))) | |
207 | ||
4ed46869 KH |
208 | ;; Embed string STR of length LEN in `ccl-program-vector' at |
209 | ;; `ccl-current-ic'. | |
210 | (defun ccl-embed-string (len str) | |
211 | (let ((i 0)) | |
212 | (while (< i len) | |
213 | (ccl-embed-data (logior (ash (aref str i) 16) | |
214 | (if (< (1+ i) len) | |
215 | (ash (aref str (1+ i)) 8) | |
216 | 0) | |
217 | (if (< (+ i 2) len) | |
218 | (aref str (+ i 2)) | |
219 | 0))) | |
220 | (setq i (+ i 3))))) | |
221 | ||
222 | ;; Embed a relative jump address to `ccl-current-ic' in | |
223 | ;; `ccl-program-vector' at IC without altering the other bit field. | |
224 | (defun ccl-embed-current-address (ic) | |
225 | (let ((relative (- ccl-current-ic (1+ ic)))) | |
226 | (aset ccl-program-vector ic | |
227 | (logior (aref ccl-program-vector ic) (ash relative 8))))) | |
228 | ||
229 | ;; Embed CCL code for the operation OP and arguments REG and DATA in | |
230 | ;; `ccl-program-vector' at `ccl-current-ic' in the following format. | |
231 | ;; |----------------- integer (28-bit) ------------------| | |
232 | ;; |------------ 20-bit ------------|- 3-bit --|- 5-bit -| | |
233 | ;; |------------- DATA -------------|-- REG ---|-- OP ---| | |
234 | ;; If REG2 is specified, embed a code in the following format. | |
235 | ;; |------- 17-bit ------|- 3-bit --|- 3-bit --|- 5-bit -| | |
236 | ;; |-------- DATA -------|-- REG2 --|-- REG ---|-- OP ---| | |
237 | ||
238 | ;; If REG is a CCL register symbol (e.g. r0, r1...), the register | |
239 | ;; number is embedded. If OP is one of unconditional jumps, DATA is | |
6c83d99f | 240 | ;; changed to a relative jump address. |
4ed46869 KH |
241 | |
242 | (defun ccl-embed-code (op reg data &optional reg2) | |
243 | (if (and (> data 0) (get op 'jump-flag)) | |
244 | ;; DATA is an absolute jump address. Make it relative to the | |
245 | ;; next of jump code. | |
246 | (setq data (- data (1+ ccl-current-ic)))) | |
247 | (let ((code (logior (get op 'ccl-code) | |
248 | (ash | |
249 | (if (symbolp reg) (get reg 'ccl-register-number) reg) 5) | |
250 | (if reg2 | |
251 | (logior (ash (get reg2 'ccl-register-number) 8) | |
252 | (ash data 11)) | |
253 | (ash data 8))))) | |
ab3b1799 | 254 | (ccl-embed-data code))) |
4ed46869 | 255 | |
6c7f6058 KH |
256 | ;; extended ccl command format |
257 | ;; |- 14-bit -|- 3-bit --|- 3-bit --|- 3-bit --|- 5-bit -| | |
258 | ;; |- EX-OP --|-- REG3 --|-- REG2 --|-- REG ---|-- OP ---| | |
259 | (defun ccl-embed-extended-command (ex-op reg reg2 reg3) | |
260 | (let ((data (logior (ash (get ex-op 'ccl-ex-code) 3) | |
261 | (if (symbolp reg3) | |
262 | (get reg3 'ccl-register-number) | |
263 | 0)))) | |
264 | (ccl-embed-code 'ex-cmd reg data reg2))) | |
265 | ||
4ed46869 KH |
266 | ;; Just advance `ccl-current-ic' by INC. |
267 | (defun ccl-increment-ic (inc) | |
268 | (setq ccl-current-ic (+ ccl-current-ic inc))) | |
269 | ||
4ed46869 KH |
270 | ;; If non-nil, index of the start of the current loop. |
271 | (defvar ccl-loop-head nil) | |
272 | ;; If non-nil, list of absolute addresses of the breaking points of | |
273 | ;; the current loop. | |
274 | (defvar ccl-breaks nil) | |
275 | ||
276 | ;;;###autoload | |
277 | (defun ccl-compile (ccl-program) | |
72f73748 | 278 | "Return the compiled code of CCL-PROGRAM as a vector of integers." |
4ed46869 KH |
279 | (if (or (null (consp ccl-program)) |
280 | (null (integerp (car ccl-program))) | |
281 | (null (listp (car (cdr ccl-program))))) | |
282 | (error "CCL: Invalid CCL program: %s" ccl-program)) | |
283 | (if (null (vectorp ccl-program-vector)) | |
284 | (setq ccl-program-vector (make-vector 8192 0))) | |
285 | (setq ccl-loop-head nil ccl-breaks nil) | |
286 | (setq ccl-current-ic 0) | |
287 | ||
288 | ;; The first element is the buffer magnification. | |
289 | (ccl-embed-data (car ccl-program)) | |
290 | ||
291 | ;; The second element is the address of the start CCL code for | |
292 | ;; processing end of input buffer (we call it eof-processor). We | |
293 | ;; set it later. | |
294 | (ccl-increment-ic 1) | |
295 | ||
296 | ;; Compile the main body of the CCL program. | |
297 | (ccl-compile-1 (car (cdr ccl-program))) | |
298 | ||
299 | ;; Embed the address of eof-processor. | |
300 | (ccl-embed-data ccl-current-ic 1) | |
301 | ||
302 | ;; Then compile eof-processor. | |
303 | (if (nth 2 ccl-program) | |
304 | (ccl-compile-1 (nth 2 ccl-program))) | |
305 | ||
306 | ;; At last, embed termination code. | |
307 | (ccl-embed-code 'end 0 0) | |
308 | ||
309 | (let ((vec (make-vector ccl-current-ic 0)) | |
310 | (i 0)) | |
311 | (while (< i ccl-current-ic) | |
312 | (aset vec i (aref ccl-program-vector i)) | |
313 | (setq i (1+ i))) | |
314 | vec)) | |
315 | ||
316 | ;; Signal syntax error. | |
317 | (defun ccl-syntax-error (cmd) | |
318 | (error "CCL: Syntax error: %s" cmd)) | |
319 | ||
320 | ;; Check if ARG is a valid CCL register. | |
321 | (defun ccl-check-register (arg cmd) | |
322 | (if (get arg 'ccl-register-number) | |
323 | arg | |
60370d40 | 324 | (error "CCL: Invalid register %s in %s" arg cmd))) |
4ed46869 KH |
325 | |
326 | ;; Check if ARG is a valid CCL command. | |
327 | (defun ccl-check-compile-function (arg cmd) | |
328 | (or (get arg 'ccl-compile-function) | |
329 | (error "CCL: Invalid command: %s" cmd))) | |
330 | ||
331 | ;; In the following code, most ccl-compile-XXXX functions return t if | |
332 | ;; they end with unconditional jump, else return nil. | |
333 | ||
334 | ;; Compile CCL-BLOCK (see the syntax above). | |
335 | (defun ccl-compile-1 (ccl-block) | |
336 | (let (unconditional-jump | |
337 | cmd) | |
338 | (if (or (integerp ccl-block) | |
339 | (stringp ccl-block) | |
340 | (and ccl-block (symbolp (car ccl-block)))) | |
341 | ;; This block consists of single statement. | |
342 | (setq ccl-block (list ccl-block))) | |
343 | ||
344 | ;; Now CCL-BLOCK is a list of statements. Compile them one by | |
345 | ;; one. | |
346 | (while ccl-block | |
347 | (setq cmd (car ccl-block)) | |
348 | (setq unconditional-jump | |
349 | (cond ((integerp cmd) | |
350 | ;; SET statement for the register 0. | |
351 | (ccl-compile-set (list 'r0 '= cmd))) | |
352 | ||
353 | ((stringp cmd) | |
354 | ;; WRITE statement of string argument. | |
355 | (ccl-compile-write-string cmd)) | |
356 | ||
357 | ((listp cmd) | |
358 | ;; The other statements. | |
359 | (cond ((eq (nth 1 cmd) '=) | |
360 | ;; SET statement of the form `(REG = EXPRESSION)'. | |
361 | (ccl-compile-set cmd)) | |
362 | ||
363 | ((and (symbolp (nth 1 cmd)) | |
364 | (get (nth 1 cmd) 'ccl-self-arith-code)) | |
365 | ;; SET statement with an assignment operation. | |
366 | (ccl-compile-self-set cmd)) | |
367 | ||
368 | (t | |
369 | (funcall (ccl-check-compile-function (car cmd) cmd) | |
370 | cmd)))) | |
371 | ||
372 | (t | |
373 | (ccl-syntax-error cmd)))) | |
374 | (setq ccl-block (cdr ccl-block))) | |
375 | unconditional-jump)) | |
376 | ||
377 | (defconst ccl-max-short-const (ash 1 19)) | |
378 | (defconst ccl-min-short-const (ash -1 19)) | |
379 | ||
380 | ;; Compile SET statement. | |
381 | (defun ccl-compile-set (cmd) | |
382 | (let ((rrr (ccl-check-register (car cmd) cmd)) | |
383 | (right (nth 2 cmd))) | |
384 | (cond ((listp right) | |
385 | ;; CMD has the form `(RRR = (XXX OP YYY))'. | |
386 | (ccl-compile-expression rrr right)) | |
387 | ||
388 | ((integerp right) | |
389 | ;; CMD has the form `(RRR = integer)'. | |
390 | (if (and (<= right ccl-max-short-const) | |
391 | (>= right ccl-min-short-const)) | |
392 | (ccl-embed-code 'set-short-const rrr right) | |
393 | (ccl-embed-code 'set-const rrr 0) | |
394 | (ccl-embed-data right))) | |
395 | ||
396 | (t | |
397 | ;; CMD has the form `(RRR = rrr [ array ])'. | |
398 | (ccl-check-register right cmd) | |
399 | (let ((ary (nth 3 cmd))) | |
400 | (if (vectorp ary) | |
401 | (let ((i 0) (len (length ary))) | |
402 | (ccl-embed-code 'set-array rrr len right) | |
403 | (while (< i len) | |
404 | (ccl-embed-data (aref ary i)) | |
405 | (setq i (1+ i)))) | |
406 | (ccl-embed-code 'set-register rrr 0 right)))))) | |
407 | nil) | |
408 | ||
409 | ;; Compile SET statement with ASSIGNMENT_OPERATOR. | |
410 | (defun ccl-compile-self-set (cmd) | |
411 | (let ((rrr (ccl-check-register (car cmd) cmd)) | |
412 | (right (nth 2 cmd))) | |
413 | (if (listp right) | |
414 | ;; CMD has the form `(RRR ASSIGN_OP (XXX OP YYY))', compile | |
415 | ;; the right hand part as `(r7 = (XXX OP YYY))' (note: the | |
416 | ;; register 7 can be used for storing temporary value). | |
417 | (progn | |
418 | (ccl-compile-expression 'r7 right) | |
419 | (setq right 'r7))) | |
420 | ;; Now CMD has the form `(RRR ASSIGN_OP ARG)'. Compile it as | |
421 | ;; `(RRR = (RRR OP ARG))'. | |
422 | (ccl-compile-expression | |
423 | rrr | |
424 | (list rrr (intern (substring (symbol-name (nth 1 cmd)) 0 -1)) right))) | |
425 | nil) | |
426 | ||
427 | ;; Compile SET statement of the form `(RRR = EXPR)'. | |
428 | (defun ccl-compile-expression (rrr expr) | |
429 | (let ((left (car expr)) | |
430 | (op (get (nth 1 expr) 'ccl-arith-code)) | |
431 | (right (nth 2 expr))) | |
432 | (if (listp left) | |
433 | (progn | |
434 | ;; EXPR has the form `((EXPR2 OP2 ARG) OP RIGHT)'. Compile | |
435 | ;; the first term as `(r7 = (EXPR2 OP2 ARG)).' | |
436 | (ccl-compile-expression 'r7 left) | |
437 | (setq left 'r7))) | |
438 | ||
439 | ;; Now EXPR has the form (LEFT OP RIGHT). | |
ec3f8be9 KH |
440 | (if (and (eq rrr left) |
441 | (< op (length ccl-assign-arith-table))) | |
4ed46869 KH |
442 | ;; Compile this SET statement as `(RRR OP= RIGHT)'. |
443 | (if (integerp right) | |
444 | (progn | |
445 | (ccl-embed-code 'set-assign-expr-const rrr (ash op 3) 'r0) | |
446 | (ccl-embed-data right)) | |
447 | (ccl-check-register right expr) | |
448 | (ccl-embed-code 'set-assign-expr-register rrr (ash op 3) right)) | |
449 | ||
450 | ;; Compile this SET statement as `(RRR = (LEFT OP RIGHT))'. | |
451 | (if (integerp right) | |
452 | (progn | |
453 | (ccl-embed-code 'set-expr-const rrr (ash op 3) left) | |
454 | (ccl-embed-data right)) | |
455 | (ccl-check-register right expr) | |
456 | (ccl-embed-code 'set-expr-register | |
457 | rrr | |
458 | (logior (ash op 3) (get right 'ccl-register-number)) | |
459 | left))))) | |
460 | ||
461 | ;; Compile WRITE statement with string argument. | |
462 | (defun ccl-compile-write-string (str) | |
b07929cd | 463 | (setq str (string-as-unibyte str)) |
4ed46869 KH |
464 | (let ((len (length str))) |
465 | (ccl-embed-code 'write-const-string 1 len) | |
466 | (ccl-embed-string len str)) | |
467 | nil) | |
468 | ||
469 | ;; Compile IF statement of the form `(if CONDITION TRUE-PART FALSE-PART)'. | |
470 | ;; If READ-FLAG is non-nil, this statement has the form | |
471 | ;; `(read-if (REG OPERATOR ARG) TRUE-PART FALSE-PART)'. | |
472 | (defun ccl-compile-if (cmd &optional read-flag) | |
473 | (if (and (/= (length cmd) 3) (/= (length cmd) 4)) | |
474 | (error "CCL: Invalid number of arguments: %s" cmd)) | |
475 | (let ((condition (nth 1 cmd)) | |
476 | (true-cmds (nth 2 cmd)) | |
477 | (false-cmds (nth 3 cmd)) | |
478 | jump-cond-address | |
479 | false-ic) | |
480 | (if (and (listp condition) | |
481 | (listp (car condition))) | |
482 | ;; If CONDITION is a nested expression, the inner expression | |
483 | ;; should be compiled at first as SET statement, i.e.: | |
484 | ;; `(if ((X OP2 Y) OP Z) ...)' is compiled into two statements: | |
485 | ;; `(r7 = (X OP2 Y)) (if (r7 OP Z) ...)'. | |
486 | (progn | |
487 | (ccl-compile-expression 'r7 (car condition)) | |
488 | (setq condition (cons 'r7 (cdr condition))) | |
489 | (setq cmd (cons (car cmd) | |
490 | (cons condition (cdr (cdr cmd))))))) | |
491 | ||
492 | (setq jump-cond-address ccl-current-ic) | |
493 | ;; Compile CONDITION. | |
494 | (if (symbolp condition) | |
495 | ;; CONDITION is a register. | |
496 | (progn | |
497 | (ccl-check-register condition cmd) | |
498 | (ccl-embed-code 'jump-cond condition 0)) | |
499 | ;; CONDITION is a simple expression of the form (RRR OP ARG). | |
500 | (let ((rrr (car condition)) | |
501 | (op (get (nth 1 condition) 'ccl-arith-code)) | |
502 | (arg (nth 2 condition))) | |
503 | (ccl-check-register rrr cmd) | |
504 | (if (integerp arg) | |
505 | (progn | |
506 | (ccl-embed-code (if read-flag 'read-jump-cond-expr-const | |
507 | 'jump-cond-expr-const) | |
508 | rrr 0) | |
509 | (ccl-embed-data op) | |
510 | (ccl-embed-data arg)) | |
511 | (ccl-check-register arg cmd) | |
6c83d99f | 512 | (ccl-embed-code (if read-flag 'read-jump-cond-expr-register |
4ed46869 KH |
513 | 'jump-cond-expr-register) |
514 | rrr 0) | |
515 | (ccl-embed-data op) | |
516 | (ccl-embed-data (get arg 'ccl-register-number))))) | |
517 | ||
518 | ;; Compile TRUE-PART. | |
519 | (let ((unconditional-jump (ccl-compile-1 true-cmds))) | |
520 | (if (null false-cmds) | |
521 | ;; This is the place to jump to if condition is false. | |
1a30e04c KH |
522 | (progn |
523 | (ccl-embed-current-address jump-cond-address) | |
524 | (setq unconditional-jump nil)) | |
4ed46869 KH |
525 | (let (end-true-part-address) |
526 | (if (not unconditional-jump) | |
527 | (progn | |
528 | ;; If TRUE-PART does not end with unconditional jump, we | |
529 | ;; have to jump to the end of FALSE-PART from here. | |
530 | (setq end-true-part-address ccl-current-ic) | |
531 | (ccl-embed-code 'jump 0 0))) | |
532 | ;; This is the place to jump to if CONDITION is false. | |
533 | (ccl-embed-current-address jump-cond-address) | |
534 | ;; Compile FALSE-PART. | |
535 | (setq unconditional-jump | |
536 | (and (ccl-compile-1 false-cmds) unconditional-jump)) | |
537 | (if end-true-part-address | |
538 | ;; This is the place to jump to after the end of TRUE-PART. | |
539 | (ccl-embed-current-address end-true-part-address)))) | |
540 | unconditional-jump))) | |
541 | ||
542 | ;; Compile BRANCH statement. | |
543 | (defun ccl-compile-branch (cmd) | |
544 | (if (< (length cmd) 3) | |
545 | (error "CCL: Invalid number of arguments: %s" cmd)) | |
546 | (ccl-compile-branch-blocks 'branch | |
547 | (ccl-compile-branch-expression (nth 1 cmd) cmd) | |
548 | (cdr (cdr cmd)))) | |
549 | ||
550 | ;; Compile READ statement of the form `(read-branch EXPR BLOCK0 BLOCK1 ...)'. | |
551 | (defun ccl-compile-read-branch (cmd) | |
552 | (if (< (length cmd) 3) | |
553 | (error "CCL: Invalid number of arguments: %s" cmd)) | |
554 | (ccl-compile-branch-blocks 'read-branch | |
555 | (ccl-compile-branch-expression (nth 1 cmd) cmd) | |
556 | (cdr (cdr cmd)))) | |
557 | ||
558 | ;; Compile EXPRESSION part of BRANCH statement and return register | |
559 | ;; which holds a value of the expression. | |
560 | (defun ccl-compile-branch-expression (expr cmd) | |
561 | (if (listp expr) | |
562 | ;; EXPR has the form `(EXPR2 OP ARG)'. Compile it as SET | |
563 | ;; statement of the form `(r7 = (EXPR2 OP ARG))'. | |
564 | (progn | |
565 | (ccl-compile-expression 'r7 expr) | |
566 | 'r7) | |
567 | (ccl-check-register expr cmd))) | |
568 | ||
569 | ;; Compile BLOCKs of BRANCH statement. CODE is 'branch or 'read-branch. | |
570 | ;; REG is a register which holds a value of EXPRESSION part. BLOCKs | |
571 | ;; is a list of CCL-BLOCKs. | |
572 | (defun ccl-compile-branch-blocks (code rrr blocks) | |
573 | (let ((branches (length blocks)) | |
574 | branch-idx | |
575 | jump-table-head-address | |
576 | empty-block-indexes | |
577 | block-tail-addresses | |
578 | block-unconditional-jump) | |
579 | (ccl-embed-code code rrr branches) | |
580 | (setq jump-table-head-address ccl-current-ic) | |
581 | ;; The size of jump table is the number of blocks plus 1 (for the | |
582 | ;; case RRR is out of range). | |
583 | (ccl-increment-ic (1+ branches)) | |
584 | (setq empty-block-indexes (list branches)) | |
585 | ;; Compile each block. | |
586 | (setq branch-idx 0) | |
587 | (while blocks | |
588 | (if (null (car blocks)) | |
589 | ;; This block is empty. | |
590 | (setq empty-block-indexes (cons branch-idx empty-block-indexes) | |
591 | block-unconditional-jump t) | |
592 | ;; This block is not empty. | |
593 | (ccl-embed-data (- ccl-current-ic jump-table-head-address) | |
594 | (+ jump-table-head-address branch-idx)) | |
595 | (setq block-unconditional-jump (ccl-compile-1 (car blocks))) | |
596 | (if (not block-unconditional-jump) | |
597 | (progn | |
598 | ;; Jump address of the end of branches are embedded later. | |
599 | ;; For the moment, just remember where to embed them. | |
600 | (setq block-tail-addresses | |
601 | (cons ccl-current-ic block-tail-addresses)) | |
602 | (ccl-embed-code 'jump 0 0)))) | |
603 | (setq branch-idx (1+ branch-idx)) | |
604 | (setq blocks (cdr blocks))) | |
605 | (if (not block-unconditional-jump) | |
606 | ;; We don't need jump code at the end of the last block. | |
607 | (setq block-tail-addresses (cdr block-tail-addresses) | |
608 | ccl-current-ic (1- ccl-current-ic))) | |
609 | ;; Embed jump address at the tailing jump commands of blocks. | |
610 | (while block-tail-addresses | |
611 | (ccl-embed-current-address (car block-tail-addresses)) | |
612 | (setq block-tail-addresses (cdr block-tail-addresses))) | |
613 | ;; For empty blocks, make entries in the jump table point directly here. | |
614 | (while empty-block-indexes | |
615 | (ccl-embed-data (- ccl-current-ic jump-table-head-address) | |
616 | (+ jump-table-head-address (car empty-block-indexes))) | |
617 | (setq empty-block-indexes (cdr empty-block-indexes)))) | |
618 | ;; Branch command ends by unconditional jump if RRR is out of range. | |
619 | nil) | |
620 | ||
621 | ;; Compile LOOP statement. | |
622 | (defun ccl-compile-loop (cmd) | |
623 | (if (< (length cmd) 2) | |
624 | (error "CCL: Invalid number of arguments: %s" cmd)) | |
625 | (let* ((ccl-loop-head ccl-current-ic) | |
626 | (ccl-breaks nil) | |
627 | unconditional-jump) | |
628 | (setq cmd (cdr cmd)) | |
629 | (if cmd | |
630 | (progn | |
631 | (setq unconditional-jump t) | |
632 | (while cmd | |
633 | (setq unconditional-jump | |
634 | (and (ccl-compile-1 (car cmd)) unconditional-jump)) | |
635 | (setq cmd (cdr cmd))) | |
636 | (if (not ccl-breaks) | |
637 | unconditional-jump | |
638 | ;; Embed jump address for break statements encountered in | |
639 | ;; this loop. | |
640 | (while ccl-breaks | |
641 | (ccl-embed-current-address (car ccl-breaks)) | |
642 | (setq ccl-breaks (cdr ccl-breaks)))) | |
643 | nil)))) | |
644 | ||
645 | ;; Compile BREAK statement. | |
646 | (defun ccl-compile-break (cmd) | |
647 | (if (/= (length cmd) 1) | |
648 | (error "CCL: Invalid number of arguments: %s" cmd)) | |
649 | (if (null ccl-loop-head) | |
650 | (error "CCL: No outer loop: %s" cmd)) | |
651 | (setq ccl-breaks (cons ccl-current-ic ccl-breaks)) | |
652 | (ccl-embed-code 'jump 0 0) | |
653 | t) | |
654 | ||
655 | ;; Compile REPEAT statement. | |
656 | (defun ccl-compile-repeat (cmd) | |
657 | (if (/= (length cmd) 1) | |
658 | (error "CCL: Invalid number of arguments: %s" cmd)) | |
659 | (if (null ccl-loop-head) | |
660 | (error "CCL: No outer loop: %s" cmd)) | |
661 | (ccl-embed-code 'jump 0 ccl-loop-head) | |
662 | t) | |
663 | ||
664 | ;; Compile WRITE-REPEAT statement. | |
665 | (defun ccl-compile-write-repeat (cmd) | |
666 | (if (/= (length cmd) 2) | |
667 | (error "CCL: Invalid number of arguments: %s" cmd)) | |
668 | (if (null ccl-loop-head) | |
669 | (error "CCL: No outer loop: %s" cmd)) | |
670 | (let ((arg (nth 1 cmd))) | |
671 | (cond ((integerp arg) | |
672 | (ccl-embed-code 'write-const-jump 0 ccl-loop-head) | |
673 | (ccl-embed-data arg)) | |
674 | ((stringp arg) | |
b07929cd | 675 | (setq arg (string-as-unibyte arg)) |
4ed46869 KH |
676 | (let ((len (length arg)) |
677 | (i 0)) | |
678 | (ccl-embed-code 'write-string-jump 0 ccl-loop-head) | |
679 | (ccl-embed-data len) | |
680 | (ccl-embed-string len arg))) | |
681 | (t | |
682 | (ccl-check-register arg cmd) | |
683 | (ccl-embed-code 'write-register-jump arg ccl-loop-head)))) | |
684 | t) | |
685 | ||
686 | ;; Compile WRITE-READ-REPEAT statement. | |
687 | (defun ccl-compile-write-read-repeat (cmd) | |
688 | (if (or (< (length cmd) 2) (> (length cmd) 3)) | |
689 | (error "CCL: Invalid number of arguments: %s" cmd)) | |
690 | (if (null ccl-loop-head) | |
691 | (error "CCL: No outer loop: %s" cmd)) | |
692 | (let ((rrr (ccl-check-register (nth 1 cmd) cmd)) | |
693 | (arg (nth 2 cmd))) | |
694 | (cond ((null arg) | |
695 | (ccl-embed-code 'write-register-read-jump rrr ccl-loop-head)) | |
696 | ((integerp arg) | |
697 | (ccl-embed-code 'write-const-read-jump rrr arg ccl-loop-head)) | |
698 | ((vectorp arg) | |
699 | (let ((len (length arg)) | |
700 | (i 0)) | |
701 | (ccl-embed-code 'write-array-read-jump rrr ccl-loop-head) | |
702 | (ccl-embed-data len) | |
703 | (while (< i len) | |
704 | (ccl-embed-data (aref arg i)) | |
705 | (setq i (1+ i))))) | |
706 | (t | |
707 | (error "CCL: Invalid argument %s: %s" arg cmd))) | |
708 | (ccl-embed-code 'read-jump rrr ccl-loop-head)) | |
709 | t) | |
6c83d99f | 710 | |
4ed46869 KH |
711 | ;; Compile READ statement. |
712 | (defun ccl-compile-read (cmd) | |
713 | (if (< (length cmd) 2) | |
714 | (error "CCL: Invalid number of arguments: %s" cmd)) | |
715 | (let* ((args (cdr cmd)) | |
716 | (i (1- (length args)))) | |
717 | (while args | |
718 | (let ((rrr (ccl-check-register (car args) cmd))) | |
719 | (ccl-embed-code 'read-register rrr i) | |
720 | (setq args (cdr args) i (1- i))))) | |
721 | nil) | |
722 | ||
723 | ;; Compile READ-IF statement. | |
724 | (defun ccl-compile-read-if (cmd) | |
725 | (ccl-compile-if cmd 'read)) | |
726 | ||
727 | ;; Compile WRITE statement. | |
728 | (defun ccl-compile-write (cmd) | |
729 | (if (< (length cmd) 2) | |
730 | (error "CCL: Invalid number of arguments: %s" cmd)) | |
731 | (let ((rrr (nth 1 cmd))) | |
732 | (cond ((integerp rrr) | |
733 | (ccl-embed-code 'write-const-string 0 rrr)) | |
734 | ((stringp rrr) | |
735 | (ccl-compile-write-string rrr)) | |
736 | ((and (symbolp rrr) (vectorp (nth 2 cmd))) | |
737 | (ccl-check-register rrr cmd) | |
738 | ;; CMD has the form `(write REG ARRAY)'. | |
739 | (let* ((arg (nth 2 cmd)) | |
740 | (len (length arg)) | |
741 | (i 0)) | |
742 | (ccl-embed-code 'write-array rrr len) | |
743 | (while (< i len) | |
744 | (if (not (integerp (aref arg i))) | |
745 | (error "CCL: Invalid argument %s: %s" arg cmd)) | |
746 | (ccl-embed-data (aref arg i)) | |
747 | (setq i (1+ i))))) | |
748 | ||
749 | ((symbolp rrr) | |
750 | ;; CMD has the form `(write REG ...)'. | |
751 | (let* ((args (cdr cmd)) | |
752 | (i (1- (length args)))) | |
753 | (while args | |
754 | (setq rrr (ccl-check-register (car args) cmd)) | |
755 | (ccl-embed-code 'write-register rrr i) | |
756 | (setq args (cdr args) i (1- i))))) | |
757 | ||
758 | ((listp rrr) | |
759 | ;; CMD has the form `(write (LEFT OP RIGHT))'. | |
760 | (let ((left (car rrr)) | |
761 | (op (get (nth 1 rrr) 'ccl-arith-code)) | |
762 | (right (nth 2 rrr))) | |
763 | (if (listp left) | |
764 | (progn | |
765 | ;; RRR has the form `((EXPR OP2 ARG) OP RIGHT)'. | |
766 | ;; Compile the first term as `(r7 = (EXPR OP2 ARG))'. | |
767 | (ccl-compile-expression 'r7 left) | |
768 | (setq left 'r7))) | |
769 | ;; Now RRR has the form `(ARG OP RIGHT)'. | |
770 | (if (integerp right) | |
771 | (progn | |
772 | (ccl-embed-code 'write-expr-const 0 (ash op 3) left) | |
773 | (ccl-embed-data right)) | |
774 | (ccl-check-register right rrr) | |
775 | (ccl-embed-code 'write-expr-register 0 | |
776 | (logior (ash op 3) | |
777 | (get right 'ccl-register-number)))))) | |
778 | ||
779 | (t | |
780 | (error "CCL: Invalid argument: %s" cmd)))) | |
781 | nil) | |
782 | ||
783 | ;; Compile CALL statement. | |
784 | (defun ccl-compile-call (cmd) | |
785 | (if (/= (length cmd) 2) | |
786 | (error "CCL: Invalid number of arguments: %s" cmd)) | |
787 | (if (not (symbolp (nth 1 cmd))) | |
788 | (error "CCL: Subroutine should be a symbol: %s" cmd)) | |
982d2673 KH |
789 | (ccl-embed-code 'call 1 0) |
790 | (ccl-embed-symbol (nth 1 cmd) 'ccl-program-idx) | |
4ed46869 KH |
791 | nil) |
792 | ||
793 | ;; Compile END statement. | |
794 | (defun ccl-compile-end (cmd) | |
795 | (if (/= (length cmd) 1) | |
796 | (error "CCL: Invalid number of arguments: %s" cmd)) | |
797 | (ccl-embed-code 'end 0 0) | |
798 | t) | |
799 | ||
6c7f6058 KH |
800 | ;; Compile read-multibyte-character |
801 | (defun ccl-compile-read-multibyte-character (cmd) | |
802 | (if (/= (length cmd) 3) | |
803 | (error "CCL: Invalid number of arguments: %s" cmd)) | |
804 | (let ((RRR (nth 1 cmd)) | |
805 | (rrr (nth 2 cmd))) | |
806 | (ccl-check-register rrr cmd) | |
807 | (ccl-check-register RRR cmd) | |
1a30e04c KH |
808 | (ccl-embed-extended-command 'read-multibyte-character rrr RRR 0)) |
809 | nil) | |
6c7f6058 KH |
810 | |
811 | ;; Compile write-multibyte-character | |
812 | (defun ccl-compile-write-multibyte-character (cmd) | |
813 | (if (/= (length cmd) 3) | |
814 | (error "CCL: Invalid number of arguments: %s" cmd)) | |
815 | (let ((RRR (nth 1 cmd)) | |
816 | (rrr (nth 2 cmd))) | |
817 | (ccl-check-register rrr cmd) | |
818 | (ccl-check-register RRR cmd) | |
1a30e04c KH |
819 | (ccl-embed-extended-command 'write-multibyte-character rrr RRR 0)) |
820 | nil) | |
6c7f6058 | 821 | |
50443272 KH |
822 | ;; Compile translate-character |
823 | (defun ccl-compile-translate-character (cmd) | |
6c7f6058 KH |
824 | (if (/= (length cmd) 4) |
825 | (error "CCL: Invalid number of arguments: %s" cmd)) | |
080bb33e | 826 | (let ((Rrr (nth 1 cmd)) |
6c7f6058 KH |
827 | (RRR (nth 2 cmd)) |
828 | (rrr (nth 3 cmd))) | |
829 | (ccl-check-register rrr cmd) | |
830 | (ccl-check-register RRR cmd) | |
2ea00696 | 831 | (cond ((and (symbolp Rrr) (not (get Rrr 'ccl-register-number))) |
50443272 KH |
832 | (ccl-embed-extended-command 'translate-character-const-tbl |
833 | rrr RRR 0) | |
982d2673 | 834 | (ccl-embed-symbol Rrr 'translation-table-id)) |
6c7f6058 KH |
835 | (t |
836 | (ccl-check-register Rrr cmd) | |
1a30e04c KH |
837 | (ccl-embed-extended-command 'translate-character rrr RRR Rrr)))) |
838 | nil) | |
6c7f6058 | 839 | |
acb69425 DL |
840 | ;; Compile lookup-integer |
841 | (defun ccl-compile-lookup-integer (cmd) | |
842 | (if (/= (length cmd) 4) | |
843 | (error "CCL: Invalid number of arguments: %s" cmd)) | |
844 | (let ((Rrr (nth 1 cmd)) | |
845 | (RRR (nth 2 cmd)) | |
846 | (rrr (nth 3 cmd))) | |
847 | (ccl-check-register RRR cmd) | |
848 | (ccl-check-register rrr cmd) | |
849 | (cond ((and (symbolp Rrr) (not (get Rrr 'ccl-register-number))) | |
850 | (ccl-embed-extended-command 'lookup-int-const-tbl | |
851 | rrr RRR 0) | |
852 | (ccl-embed-symbol Rrr 'translation-hash-table-id)) | |
853 | (t | |
854 | (error "CCL: non-constant table: %s" cmd) | |
855 | ;; not implemented: | |
856 | (ccl-check-register Rrr cmd) | |
857 | (ccl-embed-extended-command 'lookup-int rrr RRR 0)))) | |
858 | nil) | |
859 | ||
860 | ;; Compile lookup-character | |
861 | (defun ccl-compile-lookup-character (cmd) | |
862 | (if (/= (length cmd) 4) | |
863 | (error "CCL: Invalid number of arguments: %s" cmd)) | |
864 | (let ((Rrr (nth 1 cmd)) | |
865 | (RRR (nth 2 cmd)) | |
866 | (rrr (nth 3 cmd))) | |
867 | (ccl-check-register RRR cmd) | |
868 | (ccl-check-register rrr cmd) | |
869 | (cond ((and (symbolp Rrr) (not (get Rrr 'ccl-register-number))) | |
870 | (ccl-embed-extended-command 'lookup-char-const-tbl | |
871 | rrr RRR 0) | |
872 | (ccl-embed-symbol Rrr 'translation-hash-table-id)) | |
873 | (t | |
874 | (error "CCL: non-constant table: %s" cmd) | |
875 | ;; not implemented: | |
876 | (ccl-check-register Rrr cmd) | |
877 | (ccl-embed-extended-command 'lookup-char rrr RRR 0)))) | |
878 | nil) | |
879 | ||
6c7f6058 | 880 | (defun ccl-compile-iterate-multiple-map (cmd) |
1a30e04c KH |
881 | (ccl-compile-multiple-map-function 'iterate-multiple-map cmd) |
882 | nil) | |
6c7f6058 | 883 | |
50443272 | 884 | (defun ccl-compile-map-multiple (cmd) |
080bb33e | 885 | (if (/= (length cmd) 4) |
6c7f6058 | 886 | (error "CCL: Invalid number of arguments: %s" cmd)) |
bec6f62a KH |
887 | (let (func arg) |
888 | (setq func | |
889 | (lambda (arg mp) | |
890 | (let ((len 0) result add) | |
891 | (while arg | |
892 | (if (consp (car arg)) | |
893 | (setq add (funcall func (car arg) t) | |
894 | result (append result add) | |
895 | add (+ (- (car add)) 1)) | |
896 | (setq result | |
897 | (append result | |
898 | (list (car arg))) | |
899 | add 1)) | |
900 | (setq arg (cdr arg) | |
901 | len (+ len add))) | |
6c83d99f | 902 | (if mp |
bec6f62a KH |
903 | (cons (- len) result) |
904 | result)))) | |
080bb33e KH |
905 | (setq arg (append (list (nth 0 cmd) (nth 1 cmd) (nth 2 cmd)) |
906 | (funcall func (nth 3 cmd) nil))) | |
1a30e04c KH |
907 | (ccl-compile-multiple-map-function 'map-multiple arg)) |
908 | nil) | |
6c7f6058 | 909 | |
50443272 | 910 | (defun ccl-compile-map-single (cmd) |
6c7f6058 KH |
911 | (if (/= (length cmd) 4) |
912 | (error "CCL: Invalid number of arguments: %s" cmd)) | |
913 | (let ((RRR (nth 1 cmd)) | |
914 | (rrr (nth 2 cmd)) | |
50443272 | 915 | (map (nth 3 cmd)) |
6c7f6058 KH |
916 | id) |
917 | (ccl-check-register rrr cmd) | |
918 | (ccl-check-register RRR cmd) | |
50443272 KH |
919 | (ccl-embed-extended-command 'map-single rrr RRR 0) |
920 | (cond ((symbolp map) | |
921 | (if (get map 'code-conversion-map) | |
982d2673 | 922 | (ccl-embed-symbol map 'code-conversion-map-id) |
50443272 | 923 | (error "CCL: Invalid map: %s" map))) |
080bb33e | 924 | (t |
1a30e04c KH |
925 | (error "CCL: Invalid type of arguments: %s" cmd)))) |
926 | nil) | |
6c7f6058 KH |
927 | |
928 | (defun ccl-compile-multiple-map-function (command cmd) | |
929 | (if (< (length cmd) 4) | |
930 | (error "CCL: Invalid number of arguments: %s" cmd)) | |
931 | (let ((RRR (nth 1 cmd)) | |
932 | (rrr (nth 2 cmd)) | |
933 | (args (nthcdr 3 cmd)) | |
50443272 | 934 | map) |
6c7f6058 KH |
935 | (ccl-check-register rrr cmd) |
936 | (ccl-check-register RRR cmd) | |
937 | (ccl-embed-extended-command command rrr RRR 0) | |
938 | (ccl-embed-data (length args)) | |
939 | (while args | |
50443272 KH |
940 | (setq map (car args)) |
941 | (cond ((symbolp map) | |
942 | (if (get map 'code-conversion-map) | |
982d2673 | 943 | (ccl-embed-symbol map 'code-conversion-map-id) |
50443272 KH |
944 | (error "CCL: Invalid map: %s" map))) |
945 | ((numberp map) | |
946 | (ccl-embed-data map)) | |
6c7f6058 KH |
947 | (t |
948 | (error "CCL: Invalid type of arguments: %s" cmd))) | |
949 | (setq args (cdr args))))) | |
950 | ||
080bb33e | 951 | \f |
acb69425 | 952 | ;;; CCL dump stuff |
4ed46869 KH |
953 | |
954 | ;; To avoid byte-compiler warning. | |
955 | (defvar ccl-code) | |
956 | ||
957 | ;;;###autoload | |
958 | (defun ccl-dump (ccl-code) | |
959 | "Disassemble compiled CCL-CODE." | |
960 | (let ((len (length ccl-code)) | |
961 | (buffer-mag (aref ccl-code 0))) | |
962 | (cond ((= buffer-mag 0) | |
963 | (insert "Don't output anything.\n")) | |
964 | ((= buffer-mag 1) | |
965 | (insert "Out-buffer must be as large as in-buffer.\n")) | |
966 | (t | |
967 | (insert | |
968 | (format "Out-buffer must be %d times bigger than in-buffer.\n" | |
969 | buffer-mag)))) | |
970 | (insert "Main-body:\n") | |
971 | (setq ccl-current-ic 2) | |
972 | (if (> (aref ccl-code 1) 0) | |
973 | (progn | |
974 | (while (< ccl-current-ic (aref ccl-code 1)) | |
975 | (ccl-dump-1)) | |
976 | (insert "At EOF:\n"))) | |
977 | (while (< ccl-current-ic len) | |
978 | (ccl-dump-1)) | |
979 | )) | |
980 | ||
981 | ;; Return a CCL code in `ccl-code' at `ccl-current-ic'. | |
982 | (defun ccl-get-next-code () | |
983 | (prog1 | |
984 | (aref ccl-code ccl-current-ic) | |
985 | (setq ccl-current-ic (1+ ccl-current-ic)))) | |
986 | ||
987 | (defun ccl-dump-1 () | |
988 | (let* ((code (ccl-get-next-code)) | |
989 | (cmd (aref ccl-code-table (logand code 31))) | |
990 | (rrr (ash (logand code 255) -5)) | |
991 | (cc (ash code -8))) | |
992 | (insert (format "%5d:[%s] " (1- ccl-current-ic) cmd)) | |
6c83d99f | 993 | (funcall (get cmd 'ccl-dump-function) rrr cc))) |
4ed46869 KH |
994 | |
995 | (defun ccl-dump-set-register (rrr cc) | |
996 | (insert (format "r%d = r%d\n" rrr cc))) | |
997 | ||
998 | (defun ccl-dump-set-short-const (rrr cc) | |
999 | (insert (format "r%d = %d\n" rrr cc))) | |
1000 | ||
1001 | (defun ccl-dump-set-const (rrr ignore) | |
1002 | (insert (format "r%d = %d\n" rrr (ccl-get-next-code)))) | |
1003 | ||
1004 | (defun ccl-dump-set-array (rrr cc) | |
1005 | (let ((rrr2 (logand cc 7)) | |
1006 | (len (ash cc -3)) | |
1007 | (i 0)) | |
1008 | (insert (format "r%d = array[r%d] of length %d\n\t" | |
1009 | rrr rrr2 len)) | |
1010 | (while (< i len) | |
1011 | (insert (format "%d " (ccl-get-next-code))) | |
1012 | (setq i (1+ i))) | |
1013 | (insert "\n"))) | |
1014 | ||
1015 | (defun ccl-dump-jump (ignore cc &optional address) | |
1016 | (insert (format "jump to %d(" (+ (or address ccl-current-ic) cc))) | |
1017 | (if (>= cc 0) | |
1018 | (insert "+")) | |
1019 | (insert (format "%d)\n" (1+ cc)))) | |
1020 | ||
1021 | (defun ccl-dump-jump-cond (rrr cc) | |
1022 | (insert (format "if (r%d == 0), " rrr)) | |
1023 | (ccl-dump-jump nil cc)) | |
1024 | ||
1025 | (defun ccl-dump-write-register-jump (rrr cc) | |
1026 | (insert (format "write r%d, " rrr)) | |
1027 | (ccl-dump-jump nil cc)) | |
1028 | ||
1029 | (defun ccl-dump-write-register-read-jump (rrr cc) | |
1030 | (insert (format "write r%d, read r%d, " rrr rrr)) | |
1031 | (ccl-dump-jump nil cc) | |
1032 | (ccl-get-next-code) ; Skip dummy READ-JUMP | |
1033 | ) | |
1034 | ||
1035 | (defun ccl-extract-arith-op (cc) | |
1036 | (aref ccl-arith-table (ash cc -6))) | |
1037 | ||
1038 | (defun ccl-dump-write-expr-const (ignore cc) | |
1039 | (insert (format "write (r%d %s %d)\n" | |
1040 | (logand cc 7) | |
1041 | (ccl-extract-arith-op cc) | |
1042 | (ccl-get-next-code)))) | |
1043 | ||
1044 | (defun ccl-dump-write-expr-register (ignore cc) | |
1045 | (insert (format "write (r%d %s r%d)\n" | |
1046 | (logand cc 7) | |
1047 | (ccl-extract-arith-op cc) | |
1048 | (logand (ash cc -3) 7)))) | |
1049 | ||
1050 | (defun ccl-dump-insert-char (cc) | |
1051 | (cond ((= cc ?\t) (insert " \"^I\"")) | |
1052 | ((= cc ?\n) (insert " \"^J\"")) | |
1053 | (t (insert (format " \"%c\"" cc))))) | |
1054 | ||
1055 | (defun ccl-dump-write-const-jump (ignore cc) | |
1056 | (let ((address ccl-current-ic)) | |
1057 | (insert "write char") | |
1058 | (ccl-dump-insert-char (ccl-get-next-code)) | |
1059 | (insert ", ") | |
1060 | (ccl-dump-jump nil cc address))) | |
1061 | ||
1062 | (defun ccl-dump-write-const-read-jump (rrr cc) | |
1063 | (let ((address ccl-current-ic)) | |
1064 | (insert "write char") | |
1065 | (ccl-dump-insert-char (ccl-get-next-code)) | |
1066 | (insert (format ", read r%d, " rrr)) | |
1067 | (ccl-dump-jump cc address) | |
1068 | (ccl-get-next-code) ; Skip dummy READ-JUMP | |
1069 | )) | |
1070 | ||
1071 | (defun ccl-dump-write-string-jump (ignore cc) | |
1072 | (let ((address ccl-current-ic) | |
1073 | (len (ccl-get-next-code)) | |
1074 | (i 0)) | |
1075 | (insert "write \"") | |
1076 | (while (< i len) | |
1077 | (let ((code (ccl-get-next-code))) | |
1078 | (insert (ash code -16)) | |
1079 | (if (< (1+ i) len) (insert (logand (ash code -8) 255))) | |
1080 | (if (< (+ i 2) len) (insert (logand code 255)))) | |
1081 | (setq i (+ i 3))) | |
1082 | (insert "\", ") | |
1083 | (ccl-dump-jump nil cc address))) | |
1084 | ||
1085 | (defun ccl-dump-write-array-read-jump (rrr cc) | |
1086 | (let ((address ccl-current-ic) | |
1087 | (len (ccl-get-next-code)) | |
1088 | (i 0)) | |
1089 | (insert (format "write array[r%d] of length %d,\n\t" rrr len)) | |
1090 | (while (< i len) | |
1091 | (ccl-dump-insert-char (ccl-get-next-code)) | |
1092 | (setq i (1+ i))) | |
1093 | (insert (format "\n\tthen read r%d, " rrr)) | |
1094 | (ccl-dump-jump nil cc address) | |
1095 | (ccl-get-next-code) ; Skip dummy READ-JUMP. | |
1096 | )) | |
1097 | ||
1098 | (defun ccl-dump-read-jump (rrr cc) | |
1099 | (insert (format "read r%d, " rrr)) | |
1100 | (ccl-dump-jump nil cc)) | |
1101 | ||
1102 | (defun ccl-dump-branch (rrr len) | |
1103 | (let ((jump-table-head ccl-current-ic) | |
1104 | (i 0)) | |
1105 | (insert (format "jump to array[r%d] of length %d\n\t" rrr len)) | |
1106 | (while (<= i len) | |
1107 | (insert (format "%d " (+ jump-table-head (ccl-get-next-code)))) | |
1108 | (setq i (1+ i))) | |
1109 | (insert "\n"))) | |
1110 | ||
1111 | (defun ccl-dump-read-register (rrr cc) | |
1112 | (insert (format "read r%d (%d remaining)\n" rrr cc))) | |
1113 | ||
1114 | (defun ccl-dump-read-branch (rrr len) | |
1115 | (insert (format "read r%d, " rrr)) | |
1116 | (ccl-dump-branch rrr len)) | |
1117 | ||
1118 | (defun ccl-dump-write-register (rrr cc) | |
1119 | (insert (format "write r%d (%d remaining)\n" rrr cc))) | |
1120 | ||
1121 | (defun ccl-dump-call (ignore cc) | |
1122 | (insert (format "call subroutine #%d\n" cc))) | |
1123 | ||
1124 | (defun ccl-dump-write-const-string (rrr cc) | |
1125 | (if (= rrr 0) | |
1126 | (progn | |
1127 | (insert "write char") | |
1128 | (ccl-dump-insert-char cc) | |
1129 | (newline)) | |
1130 | (let ((len cc) | |
1131 | (i 0)) | |
1132 | (insert "write \"") | |
1133 | (while (< i len) | |
1134 | (let ((code (ccl-get-next-code))) | |
1135 | (insert (format "%c" (lsh code -16))) | |
1136 | (if (< (1+ i) len) | |
1137 | (insert (format "%c" (logand (lsh code -8) 255)))) | |
1138 | (if (< (+ i 2) len) | |
1139 | (insert (format "%c" (logand code 255)))) | |
1140 | (setq i (+ i 3)))) | |
1141 | (insert "\"\n")))) | |
1142 | ||
1143 | (defun ccl-dump-write-array (rrr cc) | |
1144 | (let ((i 0)) | |
1145 | (insert (format "write array[r%d] of length %d\n\t" rrr cc)) | |
1146 | (while (< i cc) | |
1147 | (ccl-dump-insert-char (ccl-get-next-code)) | |
1148 | (setq i (1+ i))) | |
1149 | (insert "\n"))) | |
1150 | ||
1151 | (defun ccl-dump-end (&rest ignore) | |
1152 | (insert "end\n")) | |
1153 | ||
1154 | (defun ccl-dump-set-assign-expr-const (rrr cc) | |
1155 | (insert (format "r%d %s= %d\n" | |
1156 | rrr | |
1157 | (ccl-extract-arith-op cc) | |
1158 | (ccl-get-next-code)))) | |
1159 | ||
1160 | (defun ccl-dump-set-assign-expr-register (rrr cc) | |
1161 | (insert (format "r%d %s= r%d\n" | |
1162 | rrr | |
1163 | (ccl-extract-arith-op cc) | |
1164 | (logand cc 7)))) | |
1165 | ||
1166 | (defun ccl-dump-set-expr-const (rrr cc) | |
1167 | (insert (format "r%d = r%d %s %d\n" | |
1168 | rrr | |
1169 | (logand cc 7) | |
1170 | (ccl-extract-arith-op cc) | |
1171 | (ccl-get-next-code)))) | |
1172 | ||
1173 | (defun ccl-dump-set-expr-register (rrr cc) | |
1174 | (insert (format "r%d = r%d %s r%d\n" | |
1175 | rrr | |
1176 | (logand cc 7) | |
1177 | (ccl-extract-arith-op cc) | |
1178 | (logand (ash cc -3) 7)))) | |
1179 | ||
1180 | (defun ccl-dump-jump-cond-expr-const (rrr cc) | |
1181 | (let ((address ccl-current-ic)) | |
1182 | (insert (format "if !(r%d %s %d), " | |
1183 | rrr | |
1184 | (aref ccl-arith-table (ccl-get-next-code)) | |
1185 | (ccl-get-next-code))) | |
1186 | (ccl-dump-jump nil cc address))) | |
1187 | ||
1188 | (defun ccl-dump-jump-cond-expr-register (rrr cc) | |
1189 | (let ((address ccl-current-ic)) | |
1190 | (insert (format "if !(r%d %s r%d), " | |
1191 | rrr | |
1192 | (aref ccl-arith-table (ccl-get-next-code)) | |
1193 | (ccl-get-next-code))) | |
1194 | (ccl-dump-jump nil cc address))) | |
1195 | ||
1196 | (defun ccl-dump-read-jump-cond-expr-const (rrr cc) | |
1197 | (insert (format "read r%d, " rrr)) | |
1198 | (ccl-dump-jump-cond-expr-const rrr cc)) | |
1199 | ||
1200 | (defun ccl-dump-read-jump-cond-expr-register (rrr cc) | |
1201 | (insert (format "read r%d, " rrr)) | |
1202 | (ccl-dump-jump-cond-expr-register rrr cc)) | |
1203 | ||
1204 | (defun ccl-dump-binary (ccl-code) | |
1205 | (let ((len (length ccl-code)) | |
1206 | (i 2)) | |
1207 | (while (< i len) | |
1208 | (let ((code (aref ccl-code i)) | |
1209 | (j 27)) | |
1210 | (while (>= j 0) | |
1211 | (insert (if (= (logand code (ash 1 j)) 0) ?0 ?1)) | |
1212 | (setq j (1- j))) | |
1213 | (setq code (logand code 31)) | |
1214 | (if (< code (length ccl-code-table)) | |
1215 | (insert (format ":%s" (aref ccl-code-table code)))) | |
1216 | (insert "\n")) | |
1217 | (setq i (1+ i))))) | |
1218 | ||
6c7f6058 KH |
1219 | (defun ccl-dump-ex-cmd (rrr cc) |
1220 | (let* ((RRR (logand cc ?\x7)) | |
1221 | (Rrr (logand (ash cc -3) ?\x7)) | |
1222 | (ex-op (aref ccl-extended-code-table (logand (ash cc -6) ?\x3fff)))) | |
1223 | (insert (format "<%s> " ex-op)) | |
1224 | (funcall (get ex-op 'ccl-dump-function) rrr RRR Rrr))) | |
1225 | ||
1226 | (defun ccl-dump-read-multibyte-character (rrr RRR Rrr) | |
1227 | (insert (format "read-multibyte-character r%d r%d\n" RRR rrr))) | |
1228 | ||
1229 | (defun ccl-dump-write-multibyte-character (rrr RRR Rrr) | |
1230 | (insert (format "write-multibyte-character r%d r%d\n" RRR rrr))) | |
1231 | ||
50443272 | 1232 | (defun ccl-dump-translate-character (rrr RRR Rrr) |
f967223b | 1233 | (insert (format "translation table(r%d) r%d r%d\n" Rrr RRR rrr))) |
6c7f6058 | 1234 | |
50443272 | 1235 | (defun ccl-dump-translate-character-const-tbl (rrr RRR Rrr) |
6c7f6058 | 1236 | (let ((tbl (ccl-get-next-code))) |
8137b8e3 | 1237 | (insert (format "translation table(%S) r%d r%d\n" tbl RRR rrr)))) |
6c7f6058 | 1238 | |
acb69425 DL |
1239 | (defun ccl-dump-lookup-int-const-tbl (rrr RRR Rrr) |
1240 | (let ((tbl (ccl-get-next-code))) | |
1241 | (insert (format "hash table(%S) r%d r%d\n" tbl RRR rrr)))) | |
1242 | ||
1243 | (defun ccl-dump-lookup-char-const-tbl (rrr RRR Rrr) | |
1244 | (let ((tbl (ccl-get-next-code))) | |
1245 | (insert (format "hash table(%S) r%d r%d\n" tbl RRR rrr)))) | |
1246 | ||
6c7f6058 KH |
1247 | (defun ccl-dump-iterate-multiple-map (rrr RRR Rrr) |
1248 | (let ((notbl (ccl-get-next-code)) | |
1249 | (i 0) id) | |
1250 | (insert (format "iterate-multiple-map r%d r%d\n" RRR rrr)) | |
50443272 | 1251 | (insert (format "\tnumber of maps is %d .\n\t [" notbl)) |
6c7f6058 KH |
1252 | (while (< i notbl) |
1253 | (setq id (ccl-get-next-code)) | |
080bb33e | 1254 | (insert (format "%S" id)) |
6c7f6058 KH |
1255 | (setq i (1+ i))) |
1256 | (insert "]\n"))) | |
1257 | ||
50443272 | 1258 | (defun ccl-dump-map-multiple (rrr RRR Rrr) |
6c7f6058 KH |
1259 | (let ((notbl (ccl-get-next-code)) |
1260 | (i 0) id) | |
50443272 KH |
1261 | (insert (format "map-multiple r%d r%d\n" RRR rrr)) |
1262 | (insert (format "\tnumber of maps and separators is %d\n\t [" notbl)) | |
6c7f6058 KH |
1263 | (while (< i notbl) |
1264 | (setq id (ccl-get-next-code)) | |
1265 | (if (= id -1) | |
1266 | (insert "]\n\t [") | |
080bb33e | 1267 | (insert (format "%S " id))) |
6c7f6058 KH |
1268 | (setq i (1+ i))) |
1269 | (insert "]\n"))) | |
1270 | ||
50443272 | 1271 | (defun ccl-dump-map-single (rrr RRR Rrr) |
6c7f6058 | 1272 | (let ((id (ccl-get-next-code))) |
50443272 | 1273 | (insert (format "map-single r%d r%d map(%S)\n" RRR rrr id)))) |
6c7f6058 | 1274 | |
080bb33e | 1275 | \f |
6c83d99f | 1276 | ;; CCL emulation staffs |
4ed46869 KH |
1277 | |
1278 | ;; Not yet implemented. | |
1279 | \f | |
080bb33e KH |
1280 | ;; Auto-loaded functions. |
1281 | ||
4ed46869 | 1282 | ;;;###autoload |
080bb33e | 1283 | (defmacro declare-ccl-program (name &optional vector) |
4ed46869 KH |
1284 | "Declare NAME as a name of CCL program. |
1285 | ||
982d2673 KH |
1286 | This macro exists for backward compatibility. In the old version of |
1287 | Emacs, to compile a CCL program which calls another CCL program not | |
1288 | yet defined, it must be declared as a CCL program in advance. But, | |
1289 | now CCL program names are resolved not at compile time but before | |
1290 | execution. | |
1291 | ||
080bb33e KH |
1292 | Optional arg VECTOR is a compiled CCL code of the CCL program." |
1293 | `(put ',name 'ccl-program-idx (register-ccl-program ',name ,vector))) | |
4ed46869 KH |
1294 | |
1295 | ;;;###autoload | |
1296 | (defmacro define-ccl-program (name ccl-program &optional doc) | |
1297 | "Set NAME the compiled code of CCL-PROGRAM. | |
07fd074e | 1298 | |
05f71b49 | 1299 | CCL-PROGRAM has this form: |
07fd074e KH |
1300 | (BUFFER_MAGNIFICATION |
1301 | CCL_MAIN_CODE | |
1302 | [ CCL_EOF_CODE ]) | |
1303 | ||
1304 | BUFFER_MAGNIFICATION is an integer value specifying the approximate | |
1305 | output buffer magnification size compared with the bytes of input data | |
1306 | text. If the value is zero, the CCL program can't execute `read' and | |
1307 | `write' commands. | |
1308 | ||
1309 | CCL_MAIN_CODE and CCL_EOF_CODE are CCL program codes. CCL_MAIN_CODE | |
1310 | executed at first. If there's no more input data when `read' command | |
1311 | is executed in CCL_MAIN_CODE, CCL_EOF_CODE is executed. If | |
1312 | CCL_MAIN_CODE is terminated, CCL_EOF_CODE is not executed. | |
1313 | ||
1314 | Here's the syntax of CCL program code in BNF notation. The lines | |
1315 | starting by two semicolons (and optional leading spaces) describe the | |
1316 | semantics. | |
1317 | ||
1318 | CCL_MAIN_CODE := CCL_BLOCK | |
1319 | ||
1320 | CCL_EOF_CODE := CCL_BLOCK | |
1321 | ||
1322 | CCL_BLOCK := STATEMENT | (STATEMENT [STATEMENT ...]) | |
1323 | ||
1324 | STATEMENT := | |
1325 | SET | IF | BRANCH | LOOP | REPEAT | BREAK | READ | WRITE | CALL | |
acb69425 | 1326 | | TRANSLATE | MAP | LOOKUP | END |
07fd074e KH |
1327 | |
1328 | SET := (REG = EXPRESSION) | |
1329 | | (REG ASSIGNMENT_OPERATOR EXPRESSION) | |
1330 | ;; The following form is the same as (r0 = integer). | |
1331 | | integer | |
1332 | ||
1333 | EXPRESSION := ARG | (EXPRESSION OPERATOR ARG) | |
1334 | ||
8dacfbde | 1335 | ;; Evaluate EXPRESSION. If the result is nonzero, execute |
07fd074e KH |
1336 | ;; CCL_BLOCK_0. Otherwise, execute CCL_BLOCK_1. |
1337 | IF := (if EXPRESSION CCL_BLOCK_0 CCL_BLOCK_1) | |
1338 | ||
1339 | ;; Evaluate EXPRESSION. Provided that the result is N, execute | |
1340 | ;; CCL_BLOCK_N. | |
1341 | BRANCH := (branch EXPRESSION CCL_BLOCK_0 [CCL_BLOCK_1 ...]) | |
1342 | ||
1343 | ;; Execute STATEMENTs until (break) or (end) is executed. | |
1344 | LOOP := (loop STATEMENT [STATEMENT ...]) | |
1345 | ||
1346 | ;; Terminate the most inner loop. | |
1347 | BREAK := (break) | |
1348 | ||
1349 | REPEAT := | |
1350 | ;; Jump to the head of the most inner loop. | |
1351 | (repeat) | |
1352 | ;; Same as: ((write [REG | integer | string]) | |
1353 | ;; (repeat)) | |
1354 | | (write-repeat [REG | integer | string]) | |
1355 | ;; Same as: ((write REG [ARRAY]) | |
1356 | ;; (read REG) | |
1357 | ;; (repeat)) | |
1358 | | (write-read-repeat REG [ARRAY]) | |
1359 | ;; Same as: ((write integer) | |
1360 | ;; (read REG) | |
1361 | ;; (repeat)) | |
1362 | | (write-read-repeat REG integer) | |
1363 | ||
1364 | READ := ;; Set REG_0 to a byte read from the input text, set REG_1 | |
1365 | ;; to the next byte read, and so on. | |
1366 | (read REG_0 [REG_1 ...]) | |
1367 | ;; Same as: ((read REG) | |
1368 | ;; (if (REG OPERATOR ARG) CCL_BLOCK_0 CCL_BLOCK_1)) | |
1369 | | (read-if (REG OPERATOR ARG) CCL_BLOCK_0 CCL_BLOCK_1) | |
1370 | ;; Same as: ((read REG) | |
1371 | ;; (branch REG CCL_BLOCK_0 [CCL_BLOCK_1 ...])) | |
1372 | | (read-branch REG CCL_BLOCK_0 [CCL_BLOCK_1 ...]) | |
1373 | ;; Read a character from the input text while parsing | |
1374 | ;; multibyte representation, set REG_0 to the charset ID of | |
1375 | ;; the character, set REG_1 to the code point of the | |
1376 | ;; character. If the dimension of charset is two, set REG_1 | |
5be68964 | 1377 | ;; to ((CODE0 << 7) | CODE1), where CODE0 is the first code |
07fd074e KH |
1378 | ;; point and CODE1 is the second code point. |
1379 | | (read-multibyte-character REG_0 REG_1) | |
1380 | ||
1381 | WRITE := | |
1382 | ;; Write REG_0, REG_1, ... to the output buffer. If REG_N is | |
1383 | ;; a multibyte character, write the corresponding multibyte | |
1384 | ;; representation. | |
1385 | (write REG_0 [REG_1 ...]) | |
1386 | ;; Same as: ((r7 = EXPRESSION) | |
1387 | ;; (write r7)) | |
1388 | | (write EXPRESSION) | |
1389 | ;; Write the value of `integer' to the output buffer. If it | |
1390 | ;; is a multibyte character, write the corresponding multibyte | |
1391 | ;; representation. | |
1392 | | (write integer) | |
1393 | ;; Write the byte sequence of `string' as is to the output | |
1394 | ;; buffer. | |
1395 | | (write string) | |
1396 | ;; Same as: (write string) | |
1397 | | string | |
1398 | ;; Provided that the value of REG is N, write Nth element of | |
1399 | ;; ARRAY to the output buffer. If it is a multibyte | |
1400 | ;; character, write the corresponding multibyte | |
1401 | ;; representation. | |
1402 | | (write REG ARRAY) | |
1403 | ;; Write a multibyte representation of a character whose | |
1404 | ;; charset ID is REG_0 and code point is REG_1. If the | |
1405 | ;; dimension of the charset is two, REG_1 should be ((CODE0 << | |
5be68964 | 1406 | ;; 7) | CODE1), where CODE0 is the first code point and CODE1 |
07fd074e KH |
1407 | ;; is the second code point of the character. |
1408 | | (write-multibyte-character REG_0 REG_1) | |
1409 | ||
1410 | ;; Call CCL program whose name is ccl-program-name. | |
1411 | CALL := (call ccl-program-name) | |
1412 | ||
1413 | ;; Terminate the CCL program. | |
1414 | END := (end) | |
1415 | ||
1416 | ;; CCL registers that can contain any integer value. As r7 is also | |
1417 | ;; used by CCL interpreter, its value is changed unexpectedly. | |
1418 | REG := r0 | r1 | r2 | r3 | r4 | r5 | r6 | r7 | |
1419 | ||
1420 | ARG := REG | integer | |
1421 | ||
1422 | OPERATOR := | |
1423 | ;; Normal arithmethic operators (same meaning as C code). | |
1424 | + | - | * | / | % | |
1425 | ||
1426 | ;; Bitwize operators (same meaning as C code) | |
1427 | | & | `|' | ^ | |
1428 | ||
1429 | ;; Shifting operators (same meaning as C code) | |
1430 | | << | >> | |
1431 | ||
1432 | ;; (REG = ARG_0 <8 ARG_1) means: | |
1433 | ;; (REG = ((ARG_0 << 8) | ARG_1)) | |
1434 | | <8 | |
1435 | ||
1436 | ;; (REG = ARG_0 >8 ARG_1) means: | |
1437 | ;; ((REG = (ARG_0 >> 8)) | |
1438 | ;; (r7 = (ARG_0 & 255))) | |
1439 | | >8 | |
1440 | ||
1441 | ;; (REG = ARG_0 // ARG_1) means: | |
1442 | ;; ((REG = (ARG_0 / ARG_1)) | |
1443 | ;; (r7 = (ARG_0 % ARG_1))) | |
1444 | | // | |
1445 | ||
1446 | ;; Normal comparing operators (same meaning as C code) | |
1447 | | < | > | == | <= | >= | != | |
1448 | ||
1449 | ;; If ARG_0 and ARG_1 are higher and lower byte of Shift-JIS | |
1450 | ;; code, and CHAR is the corresponding JISX0208 character, | |
1451 | ;; (REG = ARG_0 de-sjis ARG_1) means: | |
1452 | ;; ((REG = CODE0) | |
1453 | ;; (r7 = CODE1)) | |
1454 | ;; where CODE0 is the first code point of CHAR, CODE1 is the | |
1455 | ;; second code point of CHAR. | |
1456 | | de-sjis | |
1457 | ||
1458 | ;; If ARG_0 and ARG_1 are the first and second code point of | |
1459 | ;; JISX0208 character CHAR, and SJIS is the correponding | |
1460 | ;; Shift-JIS code, | |
1461 | ;; (REG = ARG_0 en-sjis ARG_1) means: | |
1462 | ;; ((REG = HIGH) | |
1463 | ;; (r7 = LOW)) | |
1464 | ;; where HIGH is the higher byte of SJIS, LOW is the lower | |
1465 | ;; byte of SJIS. | |
1466 | | en-sjis | |
1467 | ||
1468 | ASSIGNMENT_OPERATOR := | |
1469 | ;; Same meaning as C code | |
1470 | += | -= | *= | /= | %= | &= | `|=' | ^= | <<= | >>= | |
1471 | ||
1472 | ;; (REG <8= ARG) is the same as: | |
1473 | ;; ((REG <<= 8) | |
1474 | ;; (REG |= ARG)) | |
6c83d99f | 1475 | | <8= |
07fd074e KH |
1476 | |
1477 | ;; (REG >8= ARG) is the same as: | |
1478 | ;; ((r7 = (REG & 255)) | |
1479 | ;; (REG >>= 8)) | |
1480 | ||
1481 | ;; (REG //= ARG) is the same as: | |
1482 | ;; ((r7 = (REG % ARG)) | |
1483 | ;; (REG /= ARG)) | |
1484 | | //= | |
1485 | ||
1486 | ARRAY := `[' integer ... `]' | |
1487 | ||
1488 | ||
1489 | TRANSLATE := | |
1490 | (translate-character REG(table) REG(charset) REG(codepoint)) | |
1491 | | (translate-character SYMBOL REG(charset) REG(codepoint)) | |
521d4010 | 1492 | ;; SYMBOL must refer to a table defined by `define-translation-table'. |
acb69425 DL |
1493 | LOOKUP := |
1494 | (lookup-character SYMBOL REG(charset) REG(codepoint)) | |
1495 | | (lookup-integer SYMBOL REG(integer)) | |
bb946001 | 1496 | ;; SYMBOL refers to a table defined by `define-translation-hash-table'. |
07fd074e KH |
1497 | MAP := |
1498 | (iterate-multiple-map REG REG MAP-IDs) | |
1499 | | (map-multiple REG REG (MAP-SET)) | |
1500 | | (map-single REG REG MAP-ID) | |
1501 | MAP-IDs := MAP-ID ... | |
1502 | MAP-SET := MAP-IDs | (MAP-IDs) MAP-SET | |
1503 | MAP-ID := integer | |
1504 | " | |
4ed46869 KH |
1505 | `(let ((prog ,(ccl-compile (eval ccl-program)))) |
1506 | (defconst ,name prog ,doc) | |
1507 | (put ',name 'ccl-program-idx (register-ccl-program ',name prog)) | |
1508 | nil)) | |
1509 | ||
080bb33e KH |
1510 | ;;;###autoload |
1511 | (defmacro check-ccl-program (ccl-program &optional name) | |
1512 | "Check validity of CCL-PROGRAM. | |
982d2673 | 1513 | If CCL-PROGRAM is a symbol denoting a CCL program, return |
080bb33e KH |
1514 | CCL-PROGRAM, else return nil. |
1515 | If CCL-PROGRAM is a vector and optional arg NAME (symbol) is supplied, | |
1516 | register CCL-PROGRAM by name NAME, and return NAME." | |
982d2673 KH |
1517 | `(if (ccl-program-p ,ccl-program) |
1518 | (if (vectorp ,ccl-program) | |
1519 | (progn | |
1520 | (register-ccl-program ,name ,ccl-program) | |
1521 | ,name) | |
1522 | ,ccl-program))) | |
080bb33e | 1523 | |
4ed46869 KH |
1524 | ;;;###autoload |
1525 | (defun ccl-execute-with-args (ccl-prog &rest args) | |
1526 | "Execute CCL-PROGRAM with registers initialized by the remaining args. | |
07fd074e KH |
1527 | The return value is a vector of resulting CCL registers. |
1528 | ||
1529 | See the documentation of `define-ccl-program' for the detail of CCL program." | |
4ed46869 KH |
1530 | (let ((reg (make-vector 8 0)) |
1531 | (i 0)) | |
1532 | (while (and args (< i 8)) | |
1533 | (if (not (integerp (car args))) | |
1534 | (error "Arguments should be integer")) | |
1535 | (aset reg i (car args)) | |
1536 | (setq args (cdr args) i (1+ i))) | |
1537 | (ccl-execute ccl-prog reg) | |
1538 | reg)) | |
1539 | ||
1540 | (provide 'ccl) | |
1541 | ||
ab5796a9 | 1542 | ;;; arch-tag: 836bcd27-63a1-4a56-b232-1145ecf823fb |
60370d40 | 1543 | ;;; ccl.el ends here |