;;; ccl.el --- CCL (Code Conversion Language) compiler
-;; Copyright (C) 1995 Electrotechnical Laboratory, JAPAN.
-;; Licensed to the Free Software Foundation.
+;; Copyright (C) 1997, 1998, 2001, 2002 Free Software Foundation, Inc.
+;; Copyright (C) 1995, 1998, 1999, 2000
+;; National Institute of Advanced Industrial Science and Technology (AIST)
+;; Registration Number H14PRO021
;; Keywords: CCL, mule, multilingual, character set, coding-system
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs; see the file COPYING. If not, write to the
-;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-;; Boston, MA 02111-1307, USA.
+;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+;; Boston, MA 02110-1301, USA.
;;; Commentary:
;; CCL (Code Conversion Language) is a simple programming language to
-;; be used for various kind of code conversion. CCL program is
-;; compiled to CCL code (vector of integers) and executed by CCL
-;; interpreter of Emacs.
+;; be used for various kind of code conversion. A CCL program is
+;; compiled to CCL code (vector of integers) and executed by the CCL
+;; interpreter in Emacs.
;;
;; CCL is used for code conversion at process I/O and file I/O for
-;; non-standard coding-system. In addition, it is used for
-;; calculating a code point of X's font from a character code.
+;; non-standard coding-systems. In addition, it is used for
+;; calculating code points of X fonts from character codes.
;; However, since CCL is designed as a powerful programming language,
;; it can be used for more generic calculation. For instance,
;; combination of three or more arithmetic operations can be
-;; calculated faster than Emacs Lisp.
+;; calculated faster than in Emacs Lisp.
;;
-;; Here's the syntax of CCL program in BNF notation.
-;;
-;; CCL_PROGRAM :=
-;; (BUFFER_MAGNIFICATION
-;; CCL_MAIN_BLOCK
-;; [ CCL_EOF_BLOCK ])
-;;
-;; BUFFER_MAGNIFICATION := integer
-;; CCL_MAIN_BLOCK := CCL_BLOCK
-;; CCL_EOF_BLOCK := CCL_BLOCK
-;;
-;; CCL_BLOCK :=
-;; STATEMENT | (STATEMENT [STATEMENT ...])
-;; STATEMENT :=
-;; SET | IF | BRANCH | LOOP | REPEAT | BREAK | READ | WRITE | CALL
-;;
-;; SET :=
-;; (REG = EXPRESSION)
-;; | (REG ASSIGNMENT_OPERATOR EXPRESSION)
-;; | integer
-;;
-;; EXPRESSION := ARG | (EXPRESSION OPERATOR ARG)
-;;
-;; IF := (if EXPRESSION CCL_BLOCK CCL_BLOCK)
-;; BRANCH := (branch EXPRESSION CCL_BLOCK [CCL_BLOCK ...])
-;; LOOP := (loop STATEMENT [STATEMENT ...])
-;; BREAK := (break)
-;; REPEAT :=
-;; (repeat)
-;; | (write-repeat [REG | integer | string])
-;; | (write-read-repeat REG [integer | ARRAY])
-;; READ :=
-;; (read REG ...)
-;; | (read-if (REG OPERATOR ARG) CCL_BLOCK CCL_BLOCK)
-;; | (read-branch REG CCL_BLOCK [CCL_BLOCK ...])
-;; | (read-multibyte-character REG {charset} REG {code-point})
-;; WRITE :=
-;; (write REG ...)
-;; | (write EXPRESSION)
-;; | (write integer) | (write string) | (write REG ARRAY)
-;; | string
-;; | (write-multibyte-character REG(charset) REG(codepoint))
-;; TRANSLATE :=
-;; (translate-character REG(table) REG(charset) REG(codepoint))
-;; | (translate-character SYMBOL REG(charset) REG(codepoint))
-;; MAP :=
-;; (iterate-multiple-map REG REG MAP-IDs)
-;; | (map-multiple REG REG (MAP-SET))
-;; | (map-single REG REG MAP-ID)
-;; MAP-IDs := MAP-ID ...
-;; MAP-SET := MAP-IDs | (MAP-IDs) MAP-SET
-;; MAP-ID := integer
-;;
-;; CALL := (call ccl-program-name)
-;; END := (end)
-;;
-;; REG := r0 | r1 | r2 | r3 | r4 | r5 | r6 | r7
-;; ARG := REG | integer
-;; OPERATOR :=
-;; + | - | * | / | % | & | '|' | ^ | << | >> | <8 | >8 | //
-;; | < | > | == | <= | >= | != | de-sjis | en-sjis
-;; ASSIGNMENT_OPERATOR :=
-;; += | -= | *= | /= | %= | &= | '|=' | ^= | <<= | >>=
-;; ARRAY := '[' integer ... ']'
+;; The syntax and semantics of CCL programs are described in the
+;; documentation of `define-ccl-program'.
;;; Code:
read read-if read-branch write call end
read-multibyte-character write-multibyte-character
translate-character
- iterate-multiple-map map-multiple map-single]
+ iterate-multiple-map map-multiple map-single lookup-integer
+ lookup-character]
"Vector of CCL commands (symbols).")
;; Put a property to each symbol of CCL commands for the compiler.
iterate-multiple-map
map-multiple
map-single
+ lookup-int-const-tbl
+ lookup-char-const-tbl
]
"Vector of CCL extended compiled codes (symbols).")
(defun ccl-embed-data (data &optional ic)
(if ic
(aset ccl-program-vector ic data)
+ (let ((len (length ccl-program-vector)))
+ (if (>= ccl-current-ic len)
+ (let ((new (make-vector (* len 2) nil)))
+ (while (> len 0)
+ (setq len (1- len))
+ (aset new len (aref ccl-program-vector len)))
+ (setq ccl-program-vector new))))
(aset ccl-program-vector ccl-current-ic data)
(setq ccl-current-ic (1+ ccl-current-ic))))
+;; Embed pair of SYMBOL and PROP where (get SYMBOL PROP) should give
+;; proper index number for SYMBOL. PROP should be
+;; `translation-table-id', `translation-hash-table-id'
+;; `code-conversion-map-id', or `ccl-program-idx'.
+(defun ccl-embed-symbol (symbol prop)
+ (ccl-embed-data (cons symbol prop)))
+
;; Embed string STR of length LEN in `ccl-program-vector' at
;; `ccl-current-ic'.
(defun ccl-embed-string (len str)
;; If REG is a CCL register symbol (e.g. r0, r1...), the register
;; number is embedded. If OP is one of unconditional jumps, DATA is
-;; changed to an relative jump address.
+;; changed to a relative jump address.
(defun ccl-embed-code (op reg data &optional reg2)
(if (and (> data 0) (get op 'jump-flag))
(logior (ash (get reg2 'ccl-register-number) 8)
(ash data 11))
(ash data 8)))))
- (aset ccl-program-vector ccl-current-ic code)
- (setq ccl-current-ic (1+ ccl-current-ic))))
+ (ccl-embed-data code)))
;; extended ccl command format
;; |- 14-bit -|- 3-bit --|- 3-bit --|- 3-bit --|- 5-bit -|
(defun ccl-increment-ic (inc)
(setq ccl-current-ic (+ ccl-current-ic inc)))
-;;;###autoload
-(defun ccl-program-p (obj)
- "T if OBJECT is a valid CCL compiled code."
- (and (vectorp obj)
- (let ((i 0) (len (length obj)) (flag t))
- (if (> len 1)
- (progn
- (while (and flag (< i len))
- (setq flag (integerp (aref obj i)))
- (setq i (1+ i)))
- flag)))))
-
;; If non-nil, index of the start of the current loop.
(defvar ccl-loop-head nil)
;; If non-nil, list of absolute addresses of the breaking points of
;;;###autoload
(defun ccl-compile (ccl-program)
- "Return a compiled code of CCL-PROGRAM as a vector of integer."
+ "Return the compiled code of CCL-PROGRAM as a vector of integers."
(if (or (null (consp ccl-program))
(null (integerp (car ccl-program)))
(null (listp (car (cdr ccl-program)))))
(defun ccl-check-register (arg cmd)
(if (get arg 'ccl-register-number)
arg
- (error "CCL: Invalid register %s in %s." arg cmd)))
+ (error "CCL: Invalid register %s in %s" arg cmd)))
;; Check if ARG is a valid CCL command.
(defun ccl-check-compile-function (arg cmd)
(setq left 'r7)))
;; Now EXPR has the form (LEFT OP RIGHT).
- (if (eq rrr left)
+ (if (and (eq rrr left)
+ (< op (length ccl-assign-arith-table)))
;; Compile this SET statement as `(RRR OP= RIGHT)'.
(if (integerp right)
(progn
;; Compile WRITE statement with string argument.
(defun ccl-compile-write-string (str)
+ (setq str (string-as-unibyte str))
(let ((len (length str)))
(ccl-embed-code 'write-const-string 1 len)
(ccl-embed-string len str))
(ccl-embed-data op)
(ccl-embed-data arg))
(ccl-check-register arg cmd)
- (ccl-embed-code (if read-flag 'read-jump-cond-expr-register
+ (ccl-embed-code (if read-flag 'read-jump-cond-expr-register
'jump-cond-expr-register)
rrr 0)
(ccl-embed-data op)
(ccl-embed-code 'write-const-jump 0 ccl-loop-head)
(ccl-embed-data arg))
((stringp arg)
+ (setq arg (string-as-unibyte arg))
(let ((len (length arg))
(i 0))
(ccl-embed-code 'write-string-jump 0 ccl-loop-head)
(error "CCL: Invalid argument %s: %s" arg cmd)))
(ccl-embed-code 'read-jump rrr ccl-loop-head))
t)
-
+
;; Compile READ statement.
(defun ccl-compile-read (cmd)
(if (< (length cmd) 2)
(ccl-check-register right rrr)
(ccl-embed-code 'write-expr-register 0
(logior (ash op 3)
- (get right 'ccl-register-number))))))
+ (get right 'ccl-register-number))
+ left))))
(t
(error "CCL: Invalid argument: %s" cmd))))
(error "CCL: Invalid number of arguments: %s" cmd))
(if (not (symbolp (nth 1 cmd)))
(error "CCL: Subroutine should be a symbol: %s" cmd))
- (let* ((name (nth 1 cmd))
- (idx (get name 'ccl-program-idx)))
- (if (not idx)
- (error "CCL: Unknown subroutine name: %s" name))
- (ccl-embed-code 'call 0 idx))
+ (ccl-embed-code 'call 1 0)
+ (ccl-embed-symbol (nth 1 cmd) 'ccl-program-idx)
nil)
;; Compile END statement.
(ccl-check-register rrr cmd)
(ccl-check-register RRR cmd)
(cond ((and (symbolp Rrr) (not (get Rrr 'ccl-register-number)))
- (if (not (get Rrr 'translation-table))
- (error "CCL: Invalid translation table %s in %s" Rrr cmd))
(ccl-embed-extended-command 'translate-character-const-tbl
rrr RRR 0)
- (ccl-embed-data Rrr))
+ (ccl-embed-symbol Rrr 'translation-table-id))
(t
(ccl-check-register Rrr cmd)
(ccl-embed-extended-command 'translate-character rrr RRR Rrr))))
nil)
+;; Compile lookup-integer
+(defun ccl-compile-lookup-integer (cmd)
+ (if (/= (length cmd) 4)
+ (error "CCL: Invalid number of arguments: %s" cmd))
+ (let ((Rrr (nth 1 cmd))
+ (RRR (nth 2 cmd))
+ (rrr (nth 3 cmd)))
+ (ccl-check-register RRR cmd)
+ (ccl-check-register rrr cmd)
+ (cond ((and (symbolp Rrr) (not (get Rrr 'ccl-register-number)))
+ (ccl-embed-extended-command 'lookup-int-const-tbl
+ rrr RRR 0)
+ (ccl-embed-symbol Rrr 'translation-hash-table-id))
+ (t
+ (error "CCL: non-constant table: %s" cmd)
+ ;; not implemented:
+ (ccl-check-register Rrr cmd)
+ (ccl-embed-extended-command 'lookup-int rrr RRR 0))))
+ nil)
+
+;; Compile lookup-character
+(defun ccl-compile-lookup-character (cmd)
+ (if (/= (length cmd) 4)
+ (error "CCL: Invalid number of arguments: %s" cmd))
+ (let ((Rrr (nth 1 cmd))
+ (RRR (nth 2 cmd))
+ (rrr (nth 3 cmd)))
+ (ccl-check-register RRR cmd)
+ (ccl-check-register rrr cmd)
+ (cond ((and (symbolp Rrr) (not (get Rrr 'ccl-register-number)))
+ (ccl-embed-extended-command 'lookup-char-const-tbl
+ rrr RRR 0)
+ (ccl-embed-symbol Rrr 'translation-hash-table-id))
+ (t
+ (error "CCL: non-constant table: %s" cmd)
+ ;; not implemented:
+ (ccl-check-register Rrr cmd)
+ (ccl-embed-extended-command 'lookup-char rrr RRR 0))))
+ nil)
+
(defun ccl-compile-iterate-multiple-map (cmd)
(ccl-compile-multiple-map-function 'iterate-multiple-map cmd)
nil)
(defun ccl-compile-map-multiple (cmd)
(if (/= (length cmd) 4)
(error "CCL: Invalid number of arguments: %s" cmd))
- (let ((func '(lambda (arg mp)
- (let ((len 0) result add)
- (while arg
- (if (consp (car arg))
- (setq add (funcall func (car arg) t)
- result (append result add)
- add (+ (-(car add)) 1))
- (setq result
- (append result
- (list (car arg)))
- add 1))
- (setq arg (cdr arg)
- len (+ len add)))
- (if mp
- (cons (- len) result)
- result))))
- arg)
+ (let (func arg)
+ (setq func
+ (lambda (arg mp)
+ (let ((len 0) result add)
+ (while arg
+ (if (consp (car arg))
+ (setq add (funcall func (car arg) t)
+ result (append result add)
+ add (+ (- (car add)) 1))
+ (setq result
+ (append result
+ (list (car arg)))
+ add 1))
+ (setq arg (cdr arg)
+ len (+ len add)))
+ (if mp
+ (cons (- len) result)
+ result))))
(setq arg (append (list (nth 0 cmd) (nth 1 cmd) (nth 2 cmd))
(funcall func (nth 3 cmd) nil)))
(ccl-compile-multiple-map-function 'map-multiple arg))
(ccl-embed-extended-command 'map-single rrr RRR 0)
(cond ((symbolp map)
(if (get map 'code-conversion-map)
- (ccl-embed-data map)
+ (ccl-embed-symbol map 'code-conversion-map-id)
(error "CCL: Invalid map: %s" map)))
(t
(error "CCL: Invalid type of arguments: %s" cmd))))
(setq map (car args))
(cond ((symbolp map)
(if (get map 'code-conversion-map)
- (ccl-embed-data map)
+ (ccl-embed-symbol map 'code-conversion-map-id)
(error "CCL: Invalid map: %s" map)))
((numberp map)
(ccl-embed-data map))
(setq args (cdr args)))))
\f
-;;; CCL dump staffs
+;;; CCL dump stuff
;; To avoid byte-compiler warning.
(defvar ccl-code)
(rrr (ash (logand code 255) -5))
(cc (ash code -8)))
(insert (format "%5d:[%s] " (1- ccl-current-ic) cmd))
- (funcall (get cmd 'ccl-dump-function) rrr cc)))
+ (funcall (get cmd 'ccl-dump-function) rrr cc)))
(defun ccl-dump-set-register (rrr cc)
(insert (format "r%d = r%d\n" rrr cc)))
(insert (format "write r%d (%d remaining)\n" rrr cc)))
(defun ccl-dump-call (ignore cc)
- (insert (format "call subroutine #%d\n" cc)))
+ (let ((subroutine (car (ccl-get-next-code))))
+ (insert (format "call subroutine `%s'\n" subroutine))))
(defun ccl-dump-write-const-string (rrr cc)
(if (= rrr 0)
(let ((tbl (ccl-get-next-code)))
(insert (format "translation table(%S) r%d r%d\n" tbl RRR rrr))))
+(defun ccl-dump-lookup-int-const-tbl (rrr RRR Rrr)
+ (let ((tbl (ccl-get-next-code)))
+ (insert (format "hash table(%S) r%d r%d\n" tbl RRR rrr))))
+
+(defun ccl-dump-lookup-char-const-tbl (rrr RRR Rrr)
+ (let ((tbl (ccl-get-next-code)))
+ (insert (format "hash table(%S) r%d r%d\n" tbl RRR rrr))))
+
(defun ccl-dump-iterate-multiple-map (rrr RRR Rrr)
(let ((notbl (ccl-get-next-code))
(i 0) id)
(insert (format "map-single r%d r%d map(%S)\n" RRR rrr id))))
\f
-;; CCL emulation staffs
+;; CCL emulation staffs
;; Not yet implemented.
\f
(defmacro declare-ccl-program (name &optional vector)
"Declare NAME as a name of CCL program.
-To compile a CCL program which calls another CCL program not yet
-defined, it must be declared as a CCL program in advance.
+This macro exists for backward compatibility. In the old version of
+Emacs, to compile a CCL program which calls another CCL program not
+yet defined, it must be declared as a CCL program in advance. But,
+now CCL program names are resolved not at compile time but before
+execution.
+
Optional arg VECTOR is a compiled CCL code of the CCL program."
`(put ',name 'ccl-program-idx (register-ccl-program ',name ,vector)))
;;;###autoload
(defmacro define-ccl-program (name ccl-program &optional doc)
"Set NAME the compiled code of CCL-PROGRAM.
-CCL-PROGRAM is `eval'ed before being handed to the CCL compiler `ccl-compile'.
-The compiled code is a vector of integers."
- `(let ((prog ,(ccl-compile (eval ccl-program))))
+
+CCL-PROGRAM has this form:
+ (BUFFER_MAGNIFICATION
+ CCL_MAIN_CODE
+ [ CCL_EOF_CODE ])
+
+BUFFER_MAGNIFICATION is an integer value specifying the approximate
+output buffer magnification size compared with the bytes of input data
+text. It is assured that the actual output buffer has 256 bytes
+more than the size calculated by BUFFER_MAGNIFICATION.
+If the value is zero, the CCL program can't execute `read' and
+`write' commands.
+
+CCL_MAIN_CODE and CCL_EOF_CODE are CCL program codes. CCL_MAIN_CODE
+executed at first. If there's no more input data when `read' command
+is executed in CCL_MAIN_CODE, CCL_EOF_CODE is executed. If
+CCL_MAIN_CODE is terminated, CCL_EOF_CODE is not executed.
+
+Here's the syntax of CCL program code in BNF notation. The lines
+starting by two semicolons (and optional leading spaces) describe the
+semantics.
+
+CCL_MAIN_CODE := CCL_BLOCK
+
+CCL_EOF_CODE := CCL_BLOCK
+
+CCL_BLOCK := STATEMENT | (STATEMENT [STATEMENT ...])
+
+STATEMENT :=
+ SET | IF | BRANCH | LOOP | REPEAT | BREAK | READ | WRITE | CALL
+ | TRANSLATE | MAP | LOOKUP | END
+
+SET := (REG = EXPRESSION)
+ | (REG ASSIGNMENT_OPERATOR EXPRESSION)
+ ;; The following form is the same as (r0 = integer).
+ | integer
+
+EXPRESSION := ARG | (EXPRESSION OPERATOR ARG)
+
+;; Evaluate EXPRESSION. If the result is nonzero, execute
+;; CCL_BLOCK_0. Otherwise, execute CCL_BLOCK_1.
+IF := (if EXPRESSION CCL_BLOCK_0 CCL_BLOCK_1)
+
+;; Evaluate EXPRESSION. Provided that the result is N, execute
+;; CCL_BLOCK_N.
+BRANCH := (branch EXPRESSION CCL_BLOCK_0 [CCL_BLOCK_1 ...])
+
+;; Execute STATEMENTs until (break) or (end) is executed.
+LOOP := (loop STATEMENT [STATEMENT ...])
+
+;; Terminate the most inner loop.
+BREAK := (break)
+
+REPEAT :=
+ ;; Jump to the head of the most inner loop.
+ (repeat)
+ ;; Same as: ((write [REG | integer | string])
+ ;; (repeat))
+ | (write-repeat [REG | integer | string])
+ ;; Same as: ((write REG [ARRAY])
+ ;; (read REG)
+ ;; (repeat))
+ | (write-read-repeat REG [ARRAY])
+ ;; Same as: ((write integer)
+ ;; (read REG)
+ ;; (repeat))
+ | (write-read-repeat REG integer)
+
+READ := ;; Set REG_0 to a byte read from the input text, set REG_1
+ ;; to the next byte read, and so on.
+ (read REG_0 [REG_1 ...])
+ ;; Same as: ((read REG)
+ ;; (if (REG OPERATOR ARG) CCL_BLOCK_0 CCL_BLOCK_1))
+ | (read-if (REG OPERATOR ARG) CCL_BLOCK_0 CCL_BLOCK_1)
+ ;; Same as: ((read REG)
+ ;; (branch REG CCL_BLOCK_0 [CCL_BLOCK_1 ...]))
+ | (read-branch REG CCL_BLOCK_0 [CCL_BLOCK_1 ...])
+ ;; Read a character from the input text while parsing
+ ;; multibyte representation, set REG_0 to the charset ID of
+ ;; the character, set REG_1 to the code point of the
+ ;; character. If the dimension of charset is two, set REG_1
+ ;; to ((CODE0 << 7) | CODE1), where CODE0 is the first code
+ ;; point and CODE1 is the second code point.
+ | (read-multibyte-character REG_0 REG_1)
+
+WRITE :=
+ ;; Write REG_0, REG_1, ... to the output buffer. If REG_N is
+ ;; a multibyte character, write the corresponding multibyte
+ ;; representation.
+ (write REG_0 [REG_1 ...])
+ ;; Same as: ((r7 = EXPRESSION)
+ ;; (write r7))
+ | (write EXPRESSION)
+ ;; Write the value of `integer' to the output buffer. If it
+ ;; is a multibyte character, write the corresponding multibyte
+ ;; representation.
+ | (write integer)
+ ;; Write the byte sequence of `string' as is to the output
+ ;; buffer.
+ | (write string)
+ ;; Same as: (write string)
+ | string
+ ;; Provided that the value of REG is N, write Nth element of
+ ;; ARRAY to the output buffer. If it is a multibyte
+ ;; character, write the corresponding multibyte
+ ;; representation.
+ | (write REG ARRAY)
+ ;; Write a multibyte representation of a character whose
+ ;; charset ID is REG_0 and code point is REG_1. If the
+ ;; dimension of the charset is two, REG_1 should be ((CODE0 <<
+ ;; 7) | CODE1), where CODE0 is the first code point and CODE1
+ ;; is the second code point of the character.
+ | (write-multibyte-character REG_0 REG_1)
+
+;; Call CCL program whose name is ccl-program-name.
+CALL := (call ccl-program-name)
+
+;; Terminate the CCL program.
+END := (end)
+
+;; CCL registers that can contain any integer value. As r7 is also
+;; used by CCL interpreter, its value is changed unexpectedly.
+REG := r0 | r1 | r2 | r3 | r4 | r5 | r6 | r7
+
+ARG := REG | integer
+
+OPERATOR :=
+ ;; Normal arithmethic operators (same meaning as C code).
+ + | - | * | / | %
+
+ ;; Bitwize operators (same meaning as C code)
+ | & | `|' | ^
+
+ ;; Shifting operators (same meaning as C code)
+ | << | >>
+
+ ;; (REG = ARG_0 <8 ARG_1) means:
+ ;; (REG = ((ARG_0 << 8) | ARG_1))
+ | <8
+
+ ;; (REG = ARG_0 >8 ARG_1) means:
+ ;; ((REG = (ARG_0 >> 8))
+ ;; (r7 = (ARG_0 & 255)))
+ | >8
+
+ ;; (REG = ARG_0 // ARG_1) means:
+ ;; ((REG = (ARG_0 / ARG_1))
+ ;; (r7 = (ARG_0 % ARG_1)))
+ | //
+
+ ;; Normal comparing operators (same meaning as C code)
+ | < | > | == | <= | >= | !=
+
+ ;; If ARG_0 and ARG_1 are higher and lower byte of Shift-JIS
+ ;; code, and CHAR is the corresponding JISX0208 character,
+ ;; (REG = ARG_0 de-sjis ARG_1) means:
+ ;; ((REG = CODE0)
+ ;; (r7 = CODE1))
+ ;; where CODE0 is the first code point of CHAR, CODE1 is the
+ ;; second code point of CHAR.
+ | de-sjis
+
+ ;; If ARG_0 and ARG_1 are the first and second code point of
+ ;; JISX0208 character CHAR, and SJIS is the correponding
+ ;; Shift-JIS code,
+ ;; (REG = ARG_0 en-sjis ARG_1) means:
+ ;; ((REG = HIGH)
+ ;; (r7 = LOW))
+ ;; where HIGH is the higher byte of SJIS, LOW is the lower
+ ;; byte of SJIS.
+ | en-sjis
+
+ASSIGNMENT_OPERATOR :=
+ ;; Same meaning as C code
+ += | -= | *= | /= | %= | &= | `|=' | ^= | <<= | >>=
+
+ ;; (REG <8= ARG) is the same as:
+ ;; ((REG <<= 8)
+ ;; (REG |= ARG))
+ | <8=
+
+ ;; (REG >8= ARG) is the same as:
+ ;; ((r7 = (REG & 255))
+ ;; (REG >>= 8))
+
+ ;; (REG //= ARG) is the same as:
+ ;; ((r7 = (REG % ARG))
+ ;; (REG /= ARG))
+ | //=
+
+ARRAY := `[' integer ... `]'
+
+
+TRANSLATE :=
+ (translate-character REG(table) REG(charset) REG(codepoint))
+ | (translate-character SYMBOL REG(charset) REG(codepoint))
+ ;; SYMBOL must refer to a table defined by `define-translation-table'.
+LOOKUP :=
+ (lookup-character SYMBOL REG(charset) REG(codepoint))
+ | (lookup-integer SYMBOL REG(integer))
+ ;; SYMBOL refers to a table defined by `define-translation-hash-table'.
+MAP :=
+ (iterate-multiple-map REG REG MAP-IDs)
+ | (map-multiple REG REG (MAP-SET))
+ | (map-single REG REG MAP-ID)
+MAP-IDs := MAP-ID ...
+MAP-SET := MAP-IDs | (MAP-IDs) MAP-SET
+MAP-ID := integer
+"
+ `(let ((prog ,(unwind-protect
+ (progn
+ ;; To make ,(charset-id CHARSET) works well.
+ (fset 'charset-id 'charset-id-internal)
+ (ccl-compile (eval ccl-program)))
+ (fmakunbound 'charset-id))))
(defconst ,name prog ,doc)
(put ',name 'ccl-program-idx (register-ccl-program ',name prog))
nil))
;;;###autoload
(defmacro check-ccl-program (ccl-program &optional name)
"Check validity of CCL-PROGRAM.
-If CCL-PROGRAM is a symbol denoting a valid CCL program, return
+If CCL-PROGRAM is a symbol denoting a CCL program, return
CCL-PROGRAM, else return nil.
If CCL-PROGRAM is a vector and optional arg NAME (symbol) is supplied,
register CCL-PROGRAM by name NAME, and return NAME."
- `(let ((result ,ccl-program))
- (cond ((symbolp ,ccl-program)
- (or (numberp (get ,ccl-program 'ccl-program-idx))
- (setq result nil)))
- ((vectorp ,ccl-program)
- (setq result ,name)
- (register-ccl-program result ,ccl-program))
- (t
- (setq result nil)))
- result))
+ `(if (ccl-program-p ,ccl-program)
+ (if (vectorp ,ccl-program)
+ (progn
+ (register-ccl-program ,name ,ccl-program)
+ ,name)
+ ,ccl-program)))
;;;###autoload
(defun ccl-execute-with-args (ccl-prog &rest args)
"Execute CCL-PROGRAM with registers initialized by the remaining args.
-The return value is a vector of resulting CCL registers."
+The return value is a vector of resulting CCL registers.
+
+See the documentation of `define-ccl-program' for the detail of CCL program."
(let ((reg (make-vector 8 0))
(i 0))
(while (and args (< i 8))
(provide 'ccl)
-;; ccl.el ends here
+;;; arch-tag: 836bcd27-63a1-4a56-b232-1145ecf823fb
+;;; ccl.el ends here
HCoop / bpt / emacs.git / blobdiff