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[Emacs-diffs] Changes to emacs/lisp/international/ccl.el [emacs-unicode-
|
From: |
Kenichi Handa |
|
Subject: |
[Emacs-diffs] Changes to emacs/lisp/international/ccl.el [emacs-unicode-2] |
|
Date: |
Mon, 08 Sep 2003 08:54:20 -0400 |
Index: emacs/lisp/international/ccl.el
diff -c /dev/null emacs/lisp/international/ccl.el:1.32.4.1
*** /dev/null Mon Sep 8 08:54:20 2003
--- emacs/lisp/international/ccl.el Mon Sep 8 08:53:40 2003
***************
*** 0 ****
--- 1,1547 ----
+ ;;; ccl.el --- CCL (Code Conversion Language) compiler
+
+ ;; Copyright (C) 1995 Electrotechnical Laboratory, JAPAN.
+ ;; Licensed to the Free Software Foundation.
+ ;; Copyright (C) 2002 Free Software Foundation, Inc.
+
+ ;; Keywords: CCL, mule, multilingual, character set, coding-system
+
+ ;; This file is part of GNU Emacs.
+
+ ;; GNU Emacs is free software; you can redistribute it and/or modify
+ ;; it under the terms of the GNU General Public License as published by
+ ;; the Free Software Foundation; either version 2, or (at your option)
+ ;; any later version.
+
+ ;; GNU Emacs is distributed in the hope that it will be useful,
+ ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+ ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ ;; GNU General Public License for more details.
+
+ ;; 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.
+
+ ;;; Commentary:
+
+ ;; CCL (Code Conversion Language) is a simple programming language to
+ ;; 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-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 in Emacs Lisp.
+ ;;
+ ;; The syntax and semantics of CCL programs are described in the
+ ;; documentation of `define-ccl-program'.
+
+ ;;; Code:
+
+ (defgroup ccl nil
+ "CCL (Code Conversion Language) compiler."
+ :prefix "ccl-"
+ :group 'i18n)
+
+ (defconst ccl-command-table
+ [if branch loop break repeat write-repeat write-read-repeat
+ read read-if read-branch write call end
+ read-multibyte-character write-multibyte-character
+ translate-character
+ 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.
+ (let (op (i 0) (len (length ccl-command-table)))
+ (while (< i len)
+ (setq op (aref ccl-command-table i))
+ (put op 'ccl-compile-function (intern (format "ccl-compile-%s" op)))
+ (setq i (1+ i))))
+
+ (defconst ccl-code-table
+ [set-register
+ set-short-const
+ set-const
+ set-array
+ jump
+ jump-cond
+ write-register-jump
+ write-register-read-jump
+ write-const-jump
+ write-const-read-jump
+ write-string-jump
+ write-array-read-jump
+ read-jump
+ branch
+ read-register
+ write-expr-const
+ read-branch
+ write-register
+ write-expr-register
+ call
+ write-const-string
+ write-array
+ end
+ set-assign-expr-const
+ set-assign-expr-register
+ set-expr-const
+ set-expr-register
+ jump-cond-expr-const
+ jump-cond-expr-register
+ read-jump-cond-expr-const
+ read-jump-cond-expr-register
+ ex-cmd
+ ]
+ "Vector of CCL compiled codes (symbols).")
+
+ (defconst ccl-extended-code-table
+ [read-multibyte-character
+ write-multibyte-character
+ translate-character
+ translate-character-const-tbl
+ nil nil nil nil nil nil nil nil nil nil nil nil ; 0x04-0x0f
+ iterate-multiple-map
+ map-multiple
+ map-single
+ lookup-int-const-tbl
+ lookup-char-const-tbl
+ ]
+ "Vector of CCL extended compiled codes (symbols).")
+
+ ;; Put a property to each symbol of CCL codes for the disassembler.
+ (let (code (i 0) (len (length ccl-code-table)))
+ (while (< i len)
+ (setq code (aref ccl-code-table i))
+ (put code 'ccl-code i)
+ (put code 'ccl-dump-function (intern (format "ccl-dump-%s" code)))
+ (setq i (1+ i))))
+
+ (let (code (i 0) (len (length ccl-extended-code-table)))
+ (while (< i len)
+ (setq code (aref ccl-extended-code-table i))
+ (if code
+ (progn
+ (put code 'ccl-ex-code i)
+ (put code 'ccl-dump-function (intern (format "ccl-dump-%s" code)))))
+ (setq i (1+ i))))
+
+ (defconst ccl-jump-code-list
+ '(jump jump-cond write-register-jump write-register-read-jump
+ write-const-jump write-const-read-jump write-string-jump
+ write-array-read-jump read-jump))
+
+ ;; Put a property `jump-flag' to each CCL code which execute jump in
+ ;; some way.
+ (let ((l ccl-jump-code-list))
+ (while l
+ (put (car l) 'jump-flag t)
+ (setq l (cdr l))))
+
+ (defconst ccl-register-table
+ [r0 r1 r2 r3 r4 r5 r6 r7]
+ "Vector of CCL registers (symbols).")
+
+ ;; Put a property to indicate register number to each symbol of CCL.
+ ;; registers.
+ (let (reg (i 0) (len (length ccl-register-table)))
+ (while (< i len)
+ (setq reg (aref ccl-register-table i))
+ (put reg 'ccl-register-number i)
+ (setq i (1+ i))))
+
+ (defconst ccl-arith-table
+ [+ - * / % & | ^ << >> <8 >8 // nil nil nil
+ < > == <= >= != de-sjis en-sjis]
+ "Vector of CCL arithmetic/logical operators (symbols).")
+
+ ;; Put a property to each symbol of CCL operators for the compiler.
+ (let (arith (i 0) (len (length ccl-arith-table)))
+ (while (< i len)
+ (setq arith (aref ccl-arith-table i))
+ (if arith (put arith 'ccl-arith-code i))
+ (setq i (1+ i))))
+
+ (defconst ccl-assign-arith-table
+ [+= -= *= /= %= &= |= ^= <<= >>= <8= >8= //=]
+ "Vector of CCL assignment operators (symbols).")
+
+ ;; Put a property to each symbol of CCL assignment operators for the compiler.
+ (let (arith (i 0) (len (length ccl-assign-arith-table)))
+ (while (< i len)
+ (setq arith (aref ccl-assign-arith-table i))
+ (put arith 'ccl-self-arith-code i)
+ (setq i (1+ i))))
+
+ (defvar ccl-program-vector nil
+ "Working vector of CCL codes produced by CCL compiler.")
+ (defvar ccl-current-ic 0
+ "The current index for `ccl-program-vector'.")
+
+ ;; Embed integer DATA in `ccl-program-vector' at `ccl-current-ic' and
+ ;; increment it. If IC is specified, embed DATA at IC.
+ (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)
+ (let ((i 0))
+ (while (< i len)
+ (ccl-embed-data (logior (ash (aref str i) 16)
+ (if (< (1+ i) len)
+ (ash (aref str (1+ i)) 8)
+ 0)
+ (if (< (+ i 2) len)
+ (aref str (+ i 2))
+ 0)))
+ (setq i (+ i 3)))))
+
+ ;; Embed a relative jump address to `ccl-current-ic' in
+ ;; `ccl-program-vector' at IC without altering the other bit field.
+ (defun ccl-embed-current-address (ic)
+ (let ((relative (- ccl-current-ic (1+ ic))))
+ (aset ccl-program-vector ic
+ (logior (aref ccl-program-vector ic) (ash relative 8)))))
+
+ ;; Embed CCL code for the operation OP and arguments REG and DATA in
+ ;; `ccl-program-vector' at `ccl-current-ic' in the following format.
+ ;; |----------------- integer (28-bit) ------------------|
+ ;; |------------ 20-bit ------------|- 3-bit --|- 5-bit -|
+ ;; |------------- DATA -------------|-- REG ---|-- OP ---|
+ ;; If REG2 is specified, embed a code in the following format.
+ ;; |------- 17-bit ------|- 3-bit --|- 3-bit --|- 5-bit -|
+ ;; |-------- DATA -------|-- REG2 --|-- REG ---|-- OP ---|
+
+ ;; 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 a relative jump address.
+
+ (defun ccl-embed-code (op reg data &optional reg2)
+ (if (and (> data 0) (get op 'jump-flag))
+ ;; DATA is an absolute jump address. Make it relative to the
+ ;; next of jump code.
+ (setq data (- data (1+ ccl-current-ic))))
+ (let ((code (logior (get op 'ccl-code)
+ (ash
+ (if (symbolp reg) (get reg 'ccl-register-number) reg) 5)
+ (if reg2
+ (logior (ash (get reg2 'ccl-register-number) 8)
+ (ash data 11))
+ (ash data 8)))))
+ (ccl-embed-data code)))
+
+ ;; extended ccl command format
+ ;; |- 14-bit -|- 3-bit --|- 3-bit --|- 3-bit --|- 5-bit -|
+ ;; |- EX-OP --|-- REG3 --|-- REG2 --|-- REG ---|-- OP ---|
+ (defun ccl-embed-extended-command (ex-op reg reg2 reg3)
+ (let ((data (logior (ash (get ex-op 'ccl-ex-code) 3)
+ (if (symbolp reg3)
+ (get reg3 'ccl-register-number)
+ 0))))
+ (ccl-embed-code 'ex-cmd reg data reg2)))
+
+ ;; Just advance `ccl-current-ic' by INC.
+ (defun ccl-increment-ic (inc)
+ (setq ccl-current-ic (+ ccl-current-ic inc)))
+
+ ;; 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
+ ;; the current loop.
+ (defvar ccl-breaks nil)
+
+ ;;;###autoload
+ (defun ccl-compile (ccl-program)
+ "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)))))
+ (error "CCL: Invalid CCL program: %s" ccl-program))
+ (if (null (vectorp ccl-program-vector))
+ (setq ccl-program-vector (make-vector 8192 0)))
+ (setq ccl-loop-head nil ccl-breaks nil)
+ (setq ccl-current-ic 0)
+
+ ;; The first element is the buffer magnification.
+ (ccl-embed-data (car ccl-program))
+
+ ;; The second element is the address of the start CCL code for
+ ;; processing end of input buffer (we call it eof-processor). We
+ ;; set it later.
+ (ccl-increment-ic 1)
+
+ ;; Compile the main body of the CCL program.
+ (ccl-compile-1 (car (cdr ccl-program)))
+
+ ;; Embed the address of eof-processor.
+ (ccl-embed-data ccl-current-ic 1)
+
+ ;; Then compile eof-processor.
+ (if (nth 2 ccl-program)
+ (ccl-compile-1 (nth 2 ccl-program)))
+
+ ;; At last, embed termination code.
+ (ccl-embed-code 'end 0 0)
+
+ (let ((vec (make-vector ccl-current-ic 0))
+ (i 0))
+ (while (< i ccl-current-ic)
+ (aset vec i (aref ccl-program-vector i))
+ (setq i (1+ i)))
+ vec))
+
+ ;; Signal syntax error.
+ (defun ccl-syntax-error (cmd)
+ (error "CCL: Syntax error: %s" cmd))
+
+ ;; Check if ARG is a valid CCL register.
+ (defun ccl-check-register (arg cmd)
+ (if (get arg 'ccl-register-number)
+ arg
+ (error "CCL: Invalid register %s in %s" arg cmd)))
+
+ ;; Check if ARG is a valid CCL command.
+ (defun ccl-check-compile-function (arg cmd)
+ (or (get arg 'ccl-compile-function)
+ (error "CCL: Invalid command: %s" cmd)))
+
+ ;; In the following code, most ccl-compile-XXXX functions return t if
+ ;; they end with unconditional jump, else return nil.
+
+ ;; Compile CCL-BLOCK (see the syntax above).
+ (defun ccl-compile-1 (ccl-block)
+ (let (unconditional-jump
+ cmd)
+ (if (or (integerp ccl-block)
+ (stringp ccl-block)
+ (and ccl-block (symbolp (car ccl-block))))
+ ;; This block consists of single statement.
+ (setq ccl-block (list ccl-block)))
+
+ ;; Now CCL-BLOCK is a list of statements. Compile them one by
+ ;; one.
+ (while ccl-block
+ (setq cmd (car ccl-block))
+ (setq unconditional-jump
+ (cond ((integerp cmd)
+ ;; SET statement for the register 0.
+ (ccl-compile-set (list 'r0 '= cmd)))
+
+ ((stringp cmd)
+ ;; WRITE statement of string argument.
+ (ccl-compile-write-string cmd))
+
+ ((listp cmd)
+ ;; The other statements.
+ (cond ((eq (nth 1 cmd) '=)
+ ;; SET statement of the form `(REG = EXPRESSION)'.
+ (ccl-compile-set cmd))
+
+ ((and (symbolp (nth 1 cmd))
+ (get (nth 1 cmd) 'ccl-self-arith-code))
+ ;; SET statement with an assignment operation.
+ (ccl-compile-self-set cmd))
+
+ (t
+ (funcall (ccl-check-compile-function (car cmd) cmd)
+ cmd))))
+
+ (t
+ (ccl-syntax-error cmd))))
+ (setq ccl-block (cdr ccl-block)))
+ unconditional-jump))
+
+ (defconst ccl-max-short-const (ash 1 19))
+ (defconst ccl-min-short-const (ash -1 19))
+
+ ;; Compile SET statement.
+ (defun ccl-compile-set (cmd)
+ (let ((rrr (ccl-check-register (car cmd) cmd))
+ (right (nth 2 cmd)))
+ (cond ((listp right)
+ ;; CMD has the form `(RRR = (XXX OP YYY))'.
+ (ccl-compile-expression rrr right))
+
+ ((integerp right)
+ ;; CMD has the form `(RRR = integer)'.
+ (if (and (<= right ccl-max-short-const)
+ (>= right ccl-min-short-const))
+ (ccl-embed-code 'set-short-const rrr right)
+ (ccl-embed-code 'set-const rrr 0)
+ (ccl-embed-data right)))
+
+ (t
+ ;; CMD has the form `(RRR = rrr [ array ])'.
+ (ccl-check-register right cmd)
+ (let ((ary (nth 3 cmd)))
+ (if (vectorp ary)
+ (let ((i 0) (len (length ary)))
+ (ccl-embed-code 'set-array rrr len right)
+ (while (< i len)
+ (ccl-embed-data (aref ary i))
+ (setq i (1+ i))))
+ (ccl-embed-code 'set-register rrr 0 right))))))
+ nil)
+
+ ;; Compile SET statement with ASSIGNMENT_OPERATOR.
+ (defun ccl-compile-self-set (cmd)
+ (let ((rrr (ccl-check-register (car cmd) cmd))
+ (right (nth 2 cmd)))
+ (if (listp right)
+ ;; CMD has the form `(RRR ASSIGN_OP (XXX OP YYY))', compile
+ ;; the right hand part as `(r7 = (XXX OP YYY))' (note: the
+ ;; register 7 can be used for storing temporary value).
+ (progn
+ (ccl-compile-expression 'r7 right)
+ (setq right 'r7)))
+ ;; Now CMD has the form `(RRR ASSIGN_OP ARG)'. Compile it as
+ ;; `(RRR = (RRR OP ARG))'.
+ (ccl-compile-expression
+ rrr
+ (list rrr (intern (substring (symbol-name (nth 1 cmd)) 0 -1)) right)))
+ nil)
+
+ ;; Compile SET statement of the form `(RRR = EXPR)'.
+ (defun ccl-compile-expression (rrr expr)
+ (let ((left (car expr))
+ (op (get (nth 1 expr) 'ccl-arith-code))
+ (right (nth 2 expr)))
+ (if (listp left)
+ (progn
+ ;; EXPR has the form `((EXPR2 OP2 ARG) OP RIGHT)'. Compile
+ ;; the first term as `(r7 = (EXPR2 OP2 ARG)).'
+ (ccl-compile-expression 'r7 left)
+ (setq left 'r7)))
+
+ ;; Now EXPR has the form (LEFT OP RIGHT).
+ (if (and (eq rrr left)
+ (< op (length ccl-assign-arith-table)))
+ ;; Compile this SET statement as `(RRR OP= RIGHT)'.
+ (if (integerp right)
+ (progn
+ (ccl-embed-code 'set-assign-expr-const rrr (ash op 3) 'r0)
+ (ccl-embed-data right))
+ (ccl-check-register right expr)
+ (ccl-embed-code 'set-assign-expr-register rrr (ash op 3) right))
+
+ ;; Compile this SET statement as `(RRR = (LEFT OP RIGHT))'.
+ (if (integerp right)
+ (progn
+ (ccl-embed-code 'set-expr-const rrr (ash op 3) left)
+ (ccl-embed-data right))
+ (ccl-check-register right expr)
+ (ccl-embed-code 'set-expr-register
+ rrr
+ (logior (ash op 3) (get right 'ccl-register-number))
+ left)))))
+
+ ;; 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))
+ nil)
+
+ ;; Compile IF statement of the form `(if CONDITION TRUE-PART FALSE-PART)'.
+ ;; If READ-FLAG is non-nil, this statement has the form
+ ;; `(read-if (REG OPERATOR ARG) TRUE-PART FALSE-PART)'.
+ (defun ccl-compile-if (cmd &optional read-flag)
+ (if (and (/= (length cmd) 3) (/= (length cmd) 4))
+ (error "CCL: Invalid number of arguments: %s" cmd))
+ (let ((condition (nth 1 cmd))
+ (true-cmds (nth 2 cmd))
+ (false-cmds (nth 3 cmd))
+ jump-cond-address
+ false-ic)
+ (if (and (listp condition)
+ (listp (car condition)))
+ ;; If CONDITION is a nested expression, the inner expression
+ ;; should be compiled at first as SET statement, i.e.:
+ ;; `(if ((X OP2 Y) OP Z) ...)' is compiled into two statements:
+ ;; `(r7 = (X OP2 Y)) (if (r7 OP Z) ...)'.
+ (progn
+ (ccl-compile-expression 'r7 (car condition))
+ (setq condition (cons 'r7 (cdr condition)))
+ (setq cmd (cons (car cmd)
+ (cons condition (cdr (cdr cmd)))))))
+
+ (setq jump-cond-address ccl-current-ic)
+ ;; Compile CONDITION.
+ (if (symbolp condition)
+ ;; CONDITION is a register.
+ (progn
+ (ccl-check-register condition cmd)
+ (ccl-embed-code 'jump-cond condition 0))
+ ;; CONDITION is a simple expression of the form (RRR OP ARG).
+ (let ((rrr (car condition))
+ (op (get (nth 1 condition) 'ccl-arith-code))
+ (arg (nth 2 condition)))
+ (ccl-check-register rrr cmd)
+ (if (integerp arg)
+ (progn
+ (ccl-embed-code (if read-flag 'read-jump-cond-expr-const
+ 'jump-cond-expr-const)
+ rrr 0)
+ (ccl-embed-data op)
+ (ccl-embed-data arg))
+ (ccl-check-register arg cmd)
+ (ccl-embed-code (if read-flag 'read-jump-cond-expr-register
+ 'jump-cond-expr-register)
+ rrr 0)
+ (ccl-embed-data op)
+ (ccl-embed-data (get arg 'ccl-register-number)))))
+
+ ;; Compile TRUE-PART.
+ (let ((unconditional-jump (ccl-compile-1 true-cmds)))
+ (if (null false-cmds)
+ ;; This is the place to jump to if condition is false.
+ (progn
+ (ccl-embed-current-address jump-cond-address)
+ (setq unconditional-jump nil))
+ (let (end-true-part-address)
+ (if (not unconditional-jump)
+ (progn
+ ;; If TRUE-PART does not end with unconditional jump, we
+ ;; have to jump to the end of FALSE-PART from here.
+ (setq end-true-part-address ccl-current-ic)
+ (ccl-embed-code 'jump 0 0)))
+ ;; This is the place to jump to if CONDITION is false.
+ (ccl-embed-current-address jump-cond-address)
+ ;; Compile FALSE-PART.
+ (setq unconditional-jump
+ (and (ccl-compile-1 false-cmds) unconditional-jump))
+ (if end-true-part-address
+ ;; This is the place to jump to after the end of TRUE-PART.
+ (ccl-embed-current-address end-true-part-address))))
+ unconditional-jump)))
+
+ ;; Compile BRANCH statement.
+ (defun ccl-compile-branch (cmd)
+ (if (< (length cmd) 3)
+ (error "CCL: Invalid number of arguments: %s" cmd))
+ (ccl-compile-branch-blocks 'branch
+ (ccl-compile-branch-expression (nth 1 cmd) cmd)
+ (cdr (cdr cmd))))
+
+ ;; Compile READ statement of the form `(read-branch EXPR BLOCK0 BLOCK1 ...)'.
+ (defun ccl-compile-read-branch (cmd)
+ (if (< (length cmd) 3)
+ (error "CCL: Invalid number of arguments: %s" cmd))
+ (ccl-compile-branch-blocks 'read-branch
+ (ccl-compile-branch-expression (nth 1 cmd) cmd)
+ (cdr (cdr cmd))))
+
+ ;; Compile EXPRESSION part of BRANCH statement and return register
+ ;; which holds a value of the expression.
+ (defun ccl-compile-branch-expression (expr cmd)
+ (if (listp expr)
+ ;; EXPR has the form `(EXPR2 OP ARG)'. Compile it as SET
+ ;; statement of the form `(r7 = (EXPR2 OP ARG))'.
+ (progn
+ (ccl-compile-expression 'r7 expr)
+ 'r7)
+ (ccl-check-register expr cmd)))
+
+ ;; Compile BLOCKs of BRANCH statement. CODE is 'branch or 'read-branch.
+ ;; REG is a register which holds a value of EXPRESSION part. BLOCKs
+ ;; is a list of CCL-BLOCKs.
+ (defun ccl-compile-branch-blocks (code rrr blocks)
+ (let ((branches (length blocks))
+ branch-idx
+ jump-table-head-address
+ empty-block-indexes
+ block-tail-addresses
+ block-unconditional-jump)
+ (ccl-embed-code code rrr branches)
+ (setq jump-table-head-address ccl-current-ic)
+ ;; The size of jump table is the number of blocks plus 1 (for the
+ ;; case RRR is out of range).
+ (ccl-increment-ic (1+ branches))
+ (setq empty-block-indexes (list branches))
+ ;; Compile each block.
+ (setq branch-idx 0)
+ (while blocks
+ (if (null (car blocks))
+ ;; This block is empty.
+ (setq empty-block-indexes (cons branch-idx empty-block-indexes)
+ block-unconditional-jump t)
+ ;; This block is not empty.
+ (ccl-embed-data (- ccl-current-ic jump-table-head-address)
+ (+ jump-table-head-address branch-idx))
+ (setq block-unconditional-jump (ccl-compile-1 (car blocks)))
+ (if (not block-unconditional-jump)
+ (progn
+ ;; Jump address of the end of branches are embedded later.
+ ;; For the moment, just remember where to embed them.
+ (setq block-tail-addresses
+ (cons ccl-current-ic block-tail-addresses))
+ (ccl-embed-code 'jump 0 0))))
+ (setq branch-idx (1+ branch-idx))
+ (setq blocks (cdr blocks)))
+ (if (not block-unconditional-jump)
+ ;; We don't need jump code at the end of the last block.
+ (setq block-tail-addresses (cdr block-tail-addresses)
+ ccl-current-ic (1- ccl-current-ic)))
+ ;; Embed jump address at the tailing jump commands of blocks.
+ (while block-tail-addresses
+ (ccl-embed-current-address (car block-tail-addresses))
+ (setq block-tail-addresses (cdr block-tail-addresses)))
+ ;; For empty blocks, make entries in the jump table point directly here.
+ (while empty-block-indexes
+ (ccl-embed-data (- ccl-current-ic jump-table-head-address)
+ (+ jump-table-head-address (car empty-block-indexes)))
+ (setq empty-block-indexes (cdr empty-block-indexes))))
+ ;; Branch command ends by unconditional jump if RRR is out of range.
+ nil)
+
+ ;; Compile LOOP statement.
+ (defun ccl-compile-loop (cmd)
+ (if (< (length cmd) 2)
+ (error "CCL: Invalid number of arguments: %s" cmd))
+ (let* ((ccl-loop-head ccl-current-ic)
+ (ccl-breaks nil)
+ unconditional-jump)
+ (setq cmd (cdr cmd))
+ (if cmd
+ (progn
+ (setq unconditional-jump t)
+ (while cmd
+ (setq unconditional-jump
+ (and (ccl-compile-1 (car cmd)) unconditional-jump))
+ (setq cmd (cdr cmd)))
+ (if (not ccl-breaks)
+ unconditional-jump
+ ;; Embed jump address for break statements encountered in
+ ;; this loop.
+ (while ccl-breaks
+ (ccl-embed-current-address (car ccl-breaks))
+ (setq ccl-breaks (cdr ccl-breaks))))
+ nil))))
+
+ ;; Compile BREAK statement.
+ (defun ccl-compile-break (cmd)
+ (if (/= (length cmd) 1)
+ (error "CCL: Invalid number of arguments: %s" cmd))
+ (if (null ccl-loop-head)
+ (error "CCL: No outer loop: %s" cmd))
+ (setq ccl-breaks (cons ccl-current-ic ccl-breaks))
+ (ccl-embed-code 'jump 0 0)
+ t)
+
+ ;; Compile REPEAT statement.
+ (defun ccl-compile-repeat (cmd)
+ (if (/= (length cmd) 1)
+ (error "CCL: Invalid number of arguments: %s" cmd))
+ (if (null ccl-loop-head)
+ (error "CCL: No outer loop: %s" cmd))
+ (ccl-embed-code 'jump 0 ccl-loop-head)
+ t)
+
+ ;; Compile WRITE-REPEAT statement.
+ (defun ccl-compile-write-repeat (cmd)
+ (if (/= (length cmd) 2)
+ (error "CCL: Invalid number of arguments: %s" cmd))
+ (if (null ccl-loop-head)
+ (error "CCL: No outer loop: %s" cmd))
+ (let ((arg (nth 1 cmd)))
+ (cond ((integerp arg)
+ (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)
+ (ccl-embed-data len)
+ (ccl-embed-string len arg)))
+ (t
+ (ccl-check-register arg cmd)
+ (ccl-embed-code 'write-register-jump arg ccl-loop-head))))
+ t)
+
+ ;; Compile WRITE-READ-REPEAT statement.
+ (defun ccl-compile-write-read-repeat (cmd)
+ (if (or (< (length cmd) 2) (> (length cmd) 3))
+ (error "CCL: Invalid number of arguments: %s" cmd))
+ (if (null ccl-loop-head)
+ (error "CCL: No outer loop: %s" cmd))
+ (let ((rrr (ccl-check-register (nth 1 cmd) cmd))
+ (arg (nth 2 cmd)))
+ (cond ((null arg)
+ (ccl-embed-code 'write-register-read-jump rrr ccl-loop-head))
+ ((integerp arg)
+ (ccl-embed-code 'write-const-read-jump rrr arg ccl-loop-head))
+ ((vectorp arg)
+ (let ((len (length arg))
+ (i 0))
+ (ccl-embed-code 'write-array-read-jump rrr ccl-loop-head)
+ (ccl-embed-data len)
+ (while (< i len)
+ (ccl-embed-data (aref arg i))
+ (setq i (1+ i)))))
+ (t
+ (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)
+ (error "CCL: Invalid number of arguments: %s" cmd))
+ (let* ((args (cdr cmd))
+ (i (1- (length args))))
+ (while args
+ (let ((rrr (ccl-check-register (car args) cmd)))
+ (ccl-embed-code 'read-register rrr i)
+ (setq args (cdr args) i (1- i)))))
+ nil)
+
+ ;; Compile READ-IF statement.
+ (defun ccl-compile-read-if (cmd)
+ (ccl-compile-if cmd 'read))
+
+ ;; Compile WRITE statement.
+ (defun ccl-compile-write (cmd)
+ (if (< (length cmd) 2)
+ (error "CCL: Invalid number of arguments: %s" cmd))
+ (let ((rrr (nth 1 cmd)))
+ (cond ((integerp rrr)
+ (ccl-embed-code 'write-const-string 0 rrr))
+ ((stringp rrr)
+ (ccl-compile-write-string rrr))
+ ((and (symbolp rrr) (vectorp (nth 2 cmd)))
+ (ccl-check-register rrr cmd)
+ ;; CMD has the form `(write REG ARRAY)'.
+ (let* ((arg (nth 2 cmd))
+ (len (length arg))
+ (i 0))
+ (ccl-embed-code 'write-array rrr len)
+ (while (< i len)
+ (if (not (integerp (aref arg i)))
+ (error "CCL: Invalid argument %s: %s" arg cmd))
+ (ccl-embed-data (aref arg i))
+ (setq i (1+ i)))))
+
+ ((symbolp rrr)
+ ;; CMD has the form `(write REG ...)'.
+ (let* ((args (cdr cmd))
+ (i (1- (length args))))
+ (while args
+ (setq rrr (ccl-check-register (car args) cmd))
+ (ccl-embed-code 'write-register rrr i)
+ (setq args (cdr args) i (1- i)))))
+
+ ((listp rrr)
+ ;; CMD has the form `(write (LEFT OP RIGHT))'.
+ (let ((left (car rrr))
+ (op (get (nth 1 rrr) 'ccl-arith-code))
+ (right (nth 2 rrr)))
+ (if (listp left)
+ (progn
+ ;; RRR has the form `((EXPR OP2 ARG) OP RIGHT)'.
+ ;; Compile the first term as `(r7 = (EXPR OP2 ARG))'.
+ (ccl-compile-expression 'r7 left)
+ (setq left 'r7)))
+ ;; Now RRR has the form `(ARG OP RIGHT)'.
+ (if (integerp right)
+ (progn
+ (ccl-embed-code 'write-expr-const 0 (ash op 3) left)
+ (ccl-embed-data right))
+ (ccl-check-register right rrr)
+ (ccl-embed-code 'write-expr-register 0
+ (logior (ash op 3)
+ (get right 'ccl-register-number))))))
+
+ (t
+ (error "CCL: Invalid argument: %s" cmd))))
+ nil)
+
+ ;; Compile CALL statement.
+ (defun ccl-compile-call (cmd)
+ (if (/= (length cmd) 2)
+ (error "CCL: Invalid number of arguments: %s" cmd))
+ (if (not (symbolp (nth 1 cmd)))
+ (error "CCL: Subroutine should be a symbol: %s" cmd))
+ (ccl-embed-code 'call 1 0)
+ (ccl-embed-symbol (nth 1 cmd) 'ccl-program-idx)
+ nil)
+
+ ;; Compile END statement.
+ (defun ccl-compile-end (cmd)
+ (if (/= (length cmd) 1)
+ (error "CCL: Invalid number of arguments: %s" cmd))
+ (ccl-embed-code 'end 0 0)
+ t)
+
+ ;; Compile read-multibyte-character
+ (defun ccl-compile-read-multibyte-character (cmd)
+ (if (/= (length cmd) 3)
+ (error "CCL: Invalid number of arguments: %s" cmd))
+ (let ((RRR (nth 1 cmd))
+ (rrr (nth 2 cmd)))
+ (ccl-check-register rrr cmd)
+ (ccl-check-register RRR cmd)
+ (ccl-embed-extended-command 'read-multibyte-character rrr RRR 0))
+ nil)
+
+ ;; Compile write-multibyte-character
+ (defun ccl-compile-write-multibyte-character (cmd)
+ (if (/= (length cmd) 3)
+ (error "CCL: Invalid number of arguments: %s" cmd))
+ (let ((RRR (nth 1 cmd))
+ (rrr (nth 2 cmd)))
+ (ccl-check-register rrr cmd)
+ (ccl-check-register RRR cmd)
+ (ccl-embed-extended-command 'write-multibyte-character rrr RRR 0))
+ nil)
+
+ ;; Compile translate-character
+ (defun ccl-compile-translate-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 'translate-character-const-tbl
+ rrr RRR 0)
+ (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 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))
+ nil)
+
+ (defun ccl-compile-map-single (cmd)
+ (if (/= (length cmd) 4)
+ (error "CCL: Invalid number of arguments: %s" cmd))
+ (let ((RRR (nth 1 cmd))
+ (rrr (nth 2 cmd))
+ (map (nth 3 cmd))
+ id)
+ (ccl-check-register rrr cmd)
+ (ccl-check-register RRR cmd)
+ (ccl-embed-extended-command 'map-single rrr RRR 0)
+ (cond ((symbolp map)
+ (if (get map 'code-conversion-map)
+ (ccl-embed-symbol map 'code-conversion-map-id)
+ (error "CCL: Invalid map: %s" map)))
+ (t
+ (error "CCL: Invalid type of arguments: %s" cmd))))
+ nil)
+
+ (defun ccl-compile-multiple-map-function (command cmd)
+ (if (< (length cmd) 4)
+ (error "CCL: Invalid number of arguments: %s" cmd))
+ (let ((RRR (nth 1 cmd))
+ (rrr (nth 2 cmd))
+ (args (nthcdr 3 cmd))
+ map)
+ (ccl-check-register rrr cmd)
+ (ccl-check-register RRR cmd)
+ (ccl-embed-extended-command command rrr RRR 0)
+ (ccl-embed-data (length args))
+ (while args
+ (setq map (car args))
+ (cond ((symbolp map)
+ (if (get map 'code-conversion-map)
+ (ccl-embed-symbol map 'code-conversion-map-id)
+ (error "CCL: Invalid map: %s" map)))
+ ((numberp map)
+ (ccl-embed-data map))
+ (t
+ (error "CCL: Invalid type of arguments: %s" cmd)))
+ (setq args (cdr args)))))
+
+
+ ;;; CCL dump stuff
+
+ ;; To avoid byte-compiler warning.
+ (defvar ccl-code)
+
+ ;;;###autoload
+ (defun ccl-dump (ccl-code)
+ "Disassemble compiled CCL-CODE."
+ (let ((len (length ccl-code))
+ (buffer-mag (aref ccl-code 0)))
+ (cond ((= buffer-mag 0)
+ (insert "Don't output anything.\n"))
+ ((= buffer-mag 1)
+ (insert "Out-buffer must be as large as in-buffer.\n"))
+ (t
+ (insert
+ (format "Out-buffer must be %d times bigger than in-buffer.\n"
+ buffer-mag))))
+ (insert "Main-body:\n")
+ (setq ccl-current-ic 2)
+ (if (> (aref ccl-code 1) 0)
+ (progn
+ (while (< ccl-current-ic (aref ccl-code 1))
+ (ccl-dump-1))
+ (insert "At EOF:\n")))
+ (while (< ccl-current-ic len)
+ (ccl-dump-1))
+ ))
+
+ ;; Return a CCL code in `ccl-code' at `ccl-current-ic'.
+ (defun ccl-get-next-code ()
+ (prog1
+ (aref ccl-code ccl-current-ic)
+ (setq ccl-current-ic (1+ ccl-current-ic))))
+
+ (defun ccl-dump-1 ()
+ (let* ((code (ccl-get-next-code))
+ (cmd (aref ccl-code-table (logand code 31)))
+ (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)))
+
+ (defun ccl-dump-set-register (rrr cc)
+ (insert (format "r%d = r%d\n" rrr cc)))
+
+ (defun ccl-dump-set-short-const (rrr cc)
+ (insert (format "r%d = %d\n" rrr cc)))
+
+ (defun ccl-dump-set-const (rrr ignore)
+ (insert (format "r%d = %d\n" rrr (ccl-get-next-code))))
+
+ (defun ccl-dump-set-array (rrr cc)
+ (let ((rrr2 (logand cc 7))
+ (len (ash cc -3))
+ (i 0))
+ (insert (format "r%d = array[r%d] of length %d\n\t"
+ rrr rrr2 len))
+ (while (< i len)
+ (insert (format "%d " (ccl-get-next-code)))
+ (setq i (1+ i)))
+ (insert "\n")))
+
+ (defun ccl-dump-jump (ignore cc &optional address)
+ (insert (format "jump to %d(" (+ (or address ccl-current-ic) cc)))
+ (if (>= cc 0)
+ (insert "+"))
+ (insert (format "%d)\n" (1+ cc))))
+
+ (defun ccl-dump-jump-cond (rrr cc)
+ (insert (format "if (r%d == 0), " rrr))
+ (ccl-dump-jump nil cc))
+
+ (defun ccl-dump-write-register-jump (rrr cc)
+ (insert (format "write r%d, " rrr))
+ (ccl-dump-jump nil cc))
+
+ (defun ccl-dump-write-register-read-jump (rrr cc)
+ (insert (format "write r%d, read r%d, " rrr rrr))
+ (ccl-dump-jump nil cc)
+ (ccl-get-next-code) ; Skip dummy READ-JUMP
+ )
+
+ (defun ccl-extract-arith-op (cc)
+ (aref ccl-arith-table (ash cc -6)))
+
+ (defun ccl-dump-write-expr-const (ignore cc)
+ (insert (format "write (r%d %s %d)\n"
+ (logand cc 7)
+ (ccl-extract-arith-op cc)
+ (ccl-get-next-code))))
+
+ (defun ccl-dump-write-expr-register (ignore cc)
+ (insert (format "write (r%d %s r%d)\n"
+ (logand cc 7)
+ (ccl-extract-arith-op cc)
+ (logand (ash cc -3) 7))))
+
+ (defun ccl-dump-insert-char (cc)
+ (cond ((= cc ?\t) (insert " \"^I\""))
+ ((= cc ?\n) (insert " \"^J\""))
+ (t (insert (format " \"%c\"" cc)))))
+
+ (defun ccl-dump-write-const-jump (ignore cc)
+ (let ((address ccl-current-ic))
+ (insert "write char")
+ (ccl-dump-insert-char (ccl-get-next-code))
+ (insert ", ")
+ (ccl-dump-jump nil cc address)))
+
+ (defun ccl-dump-write-const-read-jump (rrr cc)
+ (let ((address ccl-current-ic))
+ (insert "write char")
+ (ccl-dump-insert-char (ccl-get-next-code))
+ (insert (format ", read r%d, " rrr))
+ (ccl-dump-jump cc address)
+ (ccl-get-next-code) ; Skip dummy READ-JUMP
+ ))
+
+ (defun ccl-dump-write-string-jump (ignore cc)
+ (let ((address ccl-current-ic)
+ (len (ccl-get-next-code))
+ (i 0))
+ (insert "write \"")
+ (while (< i len)
+ (let ((code (ccl-get-next-code)))
+ (insert (ash code -16))
+ (if (< (1+ i) len) (insert (logand (ash code -8) 255)))
+ (if (< (+ i 2) len) (insert (logand code 255))))
+ (setq i (+ i 3)))
+ (insert "\", ")
+ (ccl-dump-jump nil cc address)))
+
+ (defun ccl-dump-write-array-read-jump (rrr cc)
+ (let ((address ccl-current-ic)
+ (len (ccl-get-next-code))
+ (i 0))
+ (insert (format "write array[r%d] of length %d,\n\t" rrr len))
+ (while (< i len)
+ (ccl-dump-insert-char (ccl-get-next-code))
+ (setq i (1+ i)))
+ (insert (format "\n\tthen read r%d, " rrr))
+ (ccl-dump-jump nil cc address)
+ (ccl-get-next-code) ; Skip dummy READ-JUMP.
+ ))
+
+ (defun ccl-dump-read-jump (rrr cc)
+ (insert (format "read r%d, " rrr))
+ (ccl-dump-jump nil cc))
+
+ (defun ccl-dump-branch (rrr len)
+ (let ((jump-table-head ccl-current-ic)
+ (i 0))
+ (insert (format "jump to array[r%d] of length %d\n\t" rrr len))
+ (while (<= i len)
+ (insert (format "%d " (+ jump-table-head (ccl-get-next-code))))
+ (setq i (1+ i)))
+ (insert "\n")))
+
+ (defun ccl-dump-read-register (rrr cc)
+ (insert (format "read r%d (%d remaining)\n" rrr cc)))
+
+ (defun ccl-dump-read-branch (rrr len)
+ (insert (format "read r%d, " rrr))
+ (ccl-dump-branch rrr len))
+
+ (defun ccl-dump-write-register (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)))
+
+ (defun ccl-dump-write-const-string (rrr cc)
+ (if (= rrr 0)
+ (progn
+ (insert "write char")
+ (ccl-dump-insert-char cc)
+ (newline))
+ (let ((len cc)
+ (i 0))
+ (insert "write \"")
+ (while (< i len)
+ (let ((code (ccl-get-next-code)))
+ (insert (format "%c" (lsh code -16)))
+ (if (< (1+ i) len)
+ (insert (format "%c" (logand (lsh code -8) 255))))
+ (if (< (+ i 2) len)
+ (insert (format "%c" (logand code 255))))
+ (setq i (+ i 3))))
+ (insert "\"\n"))))
+
+ (defun ccl-dump-write-array (rrr cc)
+ (let ((i 0))
+ (insert (format "write array[r%d] of length %d\n\t" rrr cc))
+ (while (< i cc)
+ (ccl-dump-insert-char (ccl-get-next-code))
+ (setq i (1+ i)))
+ (insert "\n")))
+
+ (defun ccl-dump-end (&rest ignore)
+ (insert "end\n"))
+
+ (defun ccl-dump-set-assign-expr-const (rrr cc)
+ (insert (format "r%d %s= %d\n"
+ rrr
+ (ccl-extract-arith-op cc)
+ (ccl-get-next-code))))
+
+ (defun ccl-dump-set-assign-expr-register (rrr cc)
+ (insert (format "r%d %s= r%d\n"
+ rrr
+ (ccl-extract-arith-op cc)
+ (logand cc 7))))
+
+ (defun ccl-dump-set-expr-const (rrr cc)
+ (insert (format "r%d = r%d %s %d\n"
+ rrr
+ (logand cc 7)
+ (ccl-extract-arith-op cc)
+ (ccl-get-next-code))))
+
+ (defun ccl-dump-set-expr-register (rrr cc)
+ (insert (format "r%d = r%d %s r%d\n"
+ rrr
+ (logand cc 7)
+ (ccl-extract-arith-op cc)
+ (logand (ash cc -3) 7))))
+
+ (defun ccl-dump-jump-cond-expr-const (rrr cc)
+ (let ((address ccl-current-ic))
+ (insert (format "if !(r%d %s %d), "
+ rrr
+ (aref ccl-arith-table (ccl-get-next-code))
+ (ccl-get-next-code)))
+ (ccl-dump-jump nil cc address)))
+
+ (defun ccl-dump-jump-cond-expr-register (rrr cc)
+ (let ((address ccl-current-ic))
+ (insert (format "if !(r%d %s r%d), "
+ rrr
+ (aref ccl-arith-table (ccl-get-next-code))
+ (ccl-get-next-code)))
+ (ccl-dump-jump nil cc address)))
+
+ (defun ccl-dump-read-jump-cond-expr-const (rrr cc)
+ (insert (format "read r%d, " rrr))
+ (ccl-dump-jump-cond-expr-const rrr cc))
+
+ (defun ccl-dump-read-jump-cond-expr-register (rrr cc)
+ (insert (format "read r%d, " rrr))
+ (ccl-dump-jump-cond-expr-register rrr cc))
+
+ (defun ccl-dump-binary (ccl-code)
+ (let ((len (length ccl-code))
+ (i 2))
+ (while (< i len)
+ (let ((code (aref ccl-code i))
+ (j 27))
+ (while (>= j 0)
+ (insert (if (= (logand code (ash 1 j)) 0) ?0 ?1))
+ (setq j (1- j)))
+ (setq code (logand code 31))
+ (if (< code (length ccl-code-table))
+ (insert (format ":%s" (aref ccl-code-table code))))
+ (insert "\n"))
+ (setq i (1+ i)))))
+
+ (defun ccl-dump-ex-cmd (rrr cc)
+ (let* ((RRR (logand cc ?\x7))
+ (Rrr (logand (ash cc -3) ?\x7))
+ (ex-op (aref ccl-extended-code-table (logand (ash cc -6) ?\x3fff))))
+ (insert (format "<%s> " ex-op))
+ (funcall (get ex-op 'ccl-dump-function) rrr RRR Rrr)))
+
+ (defun ccl-dump-read-multibyte-character (rrr RRR Rrr)
+ (insert (format "read-multibyte-character r%d r%d\n" RRR rrr)))
+
+ (defun ccl-dump-write-multibyte-character (rrr RRR Rrr)
+ (insert (format "write-multibyte-character r%d r%d\n" RRR rrr)))
+
+ (defun ccl-dump-translate-character (rrr RRR Rrr)
+ (insert (format "translation table(r%d) r%d r%d\n" Rrr RRR rrr)))
+
+ (defun ccl-dump-translate-character-const-tbl (rrr RRR Rrr)
+ (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 "iterate-multiple-map r%d r%d\n" RRR rrr))
+ (insert (format "\tnumber of maps is %d .\n\t [" notbl))
+ (while (< i notbl)
+ (setq id (ccl-get-next-code))
+ (insert (format "%S" id))
+ (setq i (1+ i)))
+ (insert "]\n")))
+
+ (defun ccl-dump-map-multiple (rrr RRR Rrr)
+ (let ((notbl (ccl-get-next-code))
+ (i 0) id)
+ (insert (format "map-multiple r%d r%d\n" RRR rrr))
+ (insert (format "\tnumber of maps and separators is %d\n\t [" notbl))
+ (while (< i notbl)
+ (setq id (ccl-get-next-code))
+ (if (= id -1)
+ (insert "]\n\t [")
+ (insert (format "%S " id)))
+ (setq i (1+ i)))
+ (insert "]\n")))
+
+ (defun ccl-dump-map-single (rrr RRR Rrr)
+ (let ((id (ccl-get-next-code)))
+ (insert (format "map-single r%d r%d map(%S)\n" RRR rrr id))))
+
+
+ ;; CCL emulation staffs
+
+ ;; Not yet implemented.
+
+ ;; Auto-loaded functions.
+
+ ;;;###autoload
+ (defmacro declare-ccl-program (name &optional vector)
+ "Declare NAME as a name of CCL program.
+
+ 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 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. 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 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."
+ `(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.
+
+ 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))
+ (if (not (integerp (car args)))
+ (error "Arguments should be integer"))
+ (aset reg i (car args))
+ (setq args (cdr args) i (1+ i)))
+ (ccl-execute ccl-prog reg)
+ reg))
+
+ (provide 'ccl)
+
+ ;;; ccl.el ends here
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