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1551 lines
48 KiB
EmacsLisp
1551 lines
48 KiB
EmacsLisp
;;; ccl.el --- CCL (Code Conversion Language) compiler
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;; Copyright (C) 1997, 1998, 2001, 2002, 2003, 2004, 2005,
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;; 2006, 2007 Free Software Foundation, Inc.
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;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
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;; 2005, 2006, 2007
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;; National Institute of Advanced Industrial Science and Technology (AIST)
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;; Registration Number H14PRO021
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;; Keywords: CCL, mule, multilingual, character set, coding-system
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 3, or (at your option)
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;; any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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;; Boston, MA 02110-1301, USA.
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;;; Commentary:
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;; CCL (Code Conversion Language) is a simple programming language to
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;; be used for various kind of code conversion. A CCL program is
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;; compiled to CCL code (vector of integers) and executed by the CCL
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;; interpreter in Emacs.
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;;
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;; CCL is used for code conversion at process I/O and file I/O for
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;; non-standard coding-systems. In addition, it is used for
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;; calculating code points of X fonts from character codes.
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;; However, since CCL is designed as a powerful programming language,
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;; it can be used for more generic calculation. For instance,
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;; combination of three or more arithmetic operations can be
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;; calculated faster than in Emacs Lisp.
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;;
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;; The syntax and semantics of CCL programs are described in the
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;; documentation of `define-ccl-program'.
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;;; Code:
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(defgroup ccl nil
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"CCL (Code Conversion Language) compiler."
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:prefix "ccl-"
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:group 'i18n)
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(defconst ccl-command-table
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[if branch loop break repeat write-repeat write-read-repeat
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read read-if read-branch write call end
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read-multibyte-character write-multibyte-character
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translate-character
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iterate-multiple-map map-multiple map-single lookup-integer
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lookup-character]
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"Vector of CCL commands (symbols).")
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;; Put a property to each symbol of CCL commands for the compiler.
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(let (op (i 0) (len (length ccl-command-table)))
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(while (< i len)
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(setq op (aref ccl-command-table i))
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(put op 'ccl-compile-function (intern (format "ccl-compile-%s" op)))
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(setq i (1+ i))))
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(defconst ccl-code-table
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[set-register
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set-short-const
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set-const
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set-array
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jump
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jump-cond
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write-register-jump
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write-register-read-jump
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write-const-jump
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write-const-read-jump
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write-string-jump
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write-array-read-jump
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read-jump
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branch
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read-register
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write-expr-const
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read-branch
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write-register
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write-expr-register
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call
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write-const-string
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write-array
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end
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set-assign-expr-const
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set-assign-expr-register
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set-expr-const
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set-expr-register
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jump-cond-expr-const
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jump-cond-expr-register
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read-jump-cond-expr-const
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read-jump-cond-expr-register
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ex-cmd
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]
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"Vector of CCL compiled codes (symbols).")
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(defconst ccl-extended-code-table
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[read-multibyte-character
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write-multibyte-character
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translate-character
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translate-character-const-tbl
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nil nil nil nil nil nil nil nil nil nil nil nil ; 0x04-0x0f
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iterate-multiple-map
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map-multiple
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map-single
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lookup-int-const-tbl
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lookup-char-const-tbl
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]
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"Vector of CCL extended compiled codes (symbols).")
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;; Put a property to each symbol of CCL codes for the disassembler.
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(let (code (i 0) (len (length ccl-code-table)))
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(while (< i len)
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(setq code (aref ccl-code-table i))
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(put code 'ccl-code i)
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(put code 'ccl-dump-function (intern (format "ccl-dump-%s" code)))
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(setq i (1+ i))))
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(let (code (i 0) (len (length ccl-extended-code-table)))
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(while (< i len)
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(setq code (aref ccl-extended-code-table i))
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(if code
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(progn
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(put code 'ccl-ex-code i)
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(put code 'ccl-dump-function (intern (format "ccl-dump-%s" code)))))
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(setq i (1+ i))))
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(defconst ccl-jump-code-list
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'(jump jump-cond write-register-jump write-register-read-jump
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write-const-jump write-const-read-jump write-string-jump
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write-array-read-jump read-jump))
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;; Put a property `jump-flag' to each CCL code which execute jump in
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;; some way.
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(let ((l ccl-jump-code-list))
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(while l
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(put (car l) 'jump-flag t)
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(setq l (cdr l))))
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(defconst ccl-register-table
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[r0 r1 r2 r3 r4 r5 r6 r7]
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"Vector of CCL registers (symbols).")
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;; Put a property to indicate register number to each symbol of CCL.
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;; registers.
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(let (reg (i 0) (len (length ccl-register-table)))
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(while (< i len)
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(setq reg (aref ccl-register-table i))
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(put reg 'ccl-register-number i)
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(setq i (1+ i))))
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(defconst ccl-arith-table
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[+ - * / % & | ^ << >> <8 >8 // nil nil nil
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< > == <= >= != de-sjis en-sjis]
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"Vector of CCL arithmetic/logical operators (symbols).")
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;; Put a property to each symbol of CCL operators for the compiler.
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(let (arith (i 0) (len (length ccl-arith-table)))
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(while (< i len)
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(setq arith (aref ccl-arith-table i))
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(if arith (put arith 'ccl-arith-code i))
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(setq i (1+ i))))
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(defconst ccl-assign-arith-table
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[+= -= *= /= %= &= |= ^= <<= >>= <8= >8= //=]
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"Vector of CCL assignment operators (symbols).")
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;; Put a property to each symbol of CCL assignment operators for the compiler.
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(let (arith (i 0) (len (length ccl-assign-arith-table)))
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(while (< i len)
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(setq arith (aref ccl-assign-arith-table i))
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(put arith 'ccl-self-arith-code i)
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(setq i (1+ i))))
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(defvar ccl-program-vector nil
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"Working vector of CCL codes produced by CCL compiler.")
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(defvar ccl-current-ic 0
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"The current index for `ccl-program-vector'.")
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;; Embed integer DATA in `ccl-program-vector' at `ccl-current-ic' and
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;; increment it. If IC is specified, embed DATA at IC.
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(defun ccl-embed-data (data &optional ic)
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(if ic
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(aset ccl-program-vector ic data)
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(let ((len (length ccl-program-vector)))
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(if (>= ccl-current-ic len)
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(let ((new (make-vector (* len 2) nil)))
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(while (> len 0)
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(setq len (1- len))
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(aset new len (aref ccl-program-vector len)))
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(setq ccl-program-vector new))))
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(aset ccl-program-vector ccl-current-ic data)
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(setq ccl-current-ic (1+ ccl-current-ic))))
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;; Embed pair of SYMBOL and PROP where (get SYMBOL PROP) should give
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;; proper index number for SYMBOL. PROP should be
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;; `translation-table-id', `translation-hash-table-id'
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;; `code-conversion-map-id', or `ccl-program-idx'.
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(defun ccl-embed-symbol (symbol prop)
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(ccl-embed-data (cons symbol prop)))
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;; Embed string STR of length LEN in `ccl-program-vector' at
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;; `ccl-current-ic'.
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(defun ccl-embed-string (len str)
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(let ((i 0))
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(while (< i len)
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(ccl-embed-data (logior (ash (aref str i) 16)
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(if (< (1+ i) len)
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(ash (aref str (1+ i)) 8)
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0)
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(if (< (+ i 2) len)
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(aref str (+ i 2))
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0)))
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(setq i (+ i 3)))))
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;; Embed a relative jump address to `ccl-current-ic' in
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;; `ccl-program-vector' at IC without altering the other bit field.
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(defun ccl-embed-current-address (ic)
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(let ((relative (- ccl-current-ic (1+ ic))))
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(aset ccl-program-vector ic
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(logior (aref ccl-program-vector ic) (ash relative 8)))))
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;; Embed CCL code for the operation OP and arguments REG and DATA in
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;; `ccl-program-vector' at `ccl-current-ic' in the following format.
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;; |----------------- integer (28-bit) ------------------|
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;; |------------ 20-bit ------------|- 3-bit --|- 5-bit -|
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;; |------------- DATA -------------|-- REG ---|-- OP ---|
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;; If REG2 is specified, embed a code in the following format.
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;; |------- 17-bit ------|- 3-bit --|- 3-bit --|- 5-bit -|
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;; |-------- DATA -------|-- REG2 --|-- REG ---|-- OP ---|
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;; If REG is a CCL register symbol (e.g. r0, r1...), the register
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;; number is embedded. If OP is one of unconditional jumps, DATA is
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;; changed to a relative jump address.
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(defun ccl-embed-code (op reg data &optional reg2)
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(if (and (> data 0) (get op 'jump-flag))
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;; DATA is an absolute jump address. Make it relative to the
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;; next of jump code.
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(setq data (- data (1+ ccl-current-ic))))
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(let ((code (logior (get op 'ccl-code)
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(ash
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(if (symbolp reg) (get reg 'ccl-register-number) reg) 5)
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(if reg2
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(logior (ash (get reg2 'ccl-register-number) 8)
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(ash data 11))
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(ash data 8)))))
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(ccl-embed-data code)))
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;; extended ccl command format
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;; |- 14-bit -|- 3-bit --|- 3-bit --|- 3-bit --|- 5-bit -|
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;; |- EX-OP --|-- REG3 --|-- REG2 --|-- REG ---|-- OP ---|
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(defun ccl-embed-extended-command (ex-op reg reg2 reg3)
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(let ((data (logior (ash (get ex-op 'ccl-ex-code) 3)
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(if (symbolp reg3)
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(get reg3 'ccl-register-number)
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0))))
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(ccl-embed-code 'ex-cmd reg data reg2)))
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;; Just advance `ccl-current-ic' by INC.
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(defun ccl-increment-ic (inc)
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(setq ccl-current-ic (+ ccl-current-ic inc)))
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;; If non-nil, index of the start of the current loop.
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(defvar ccl-loop-head nil)
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;; If non-nil, list of absolute addresses of the breaking points of
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;; the current loop.
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(defvar ccl-breaks nil)
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;;;###autoload
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(defun ccl-compile (ccl-program)
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"Return the compiled code of CCL-PROGRAM as a vector of integers."
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(if (or (null (consp ccl-program))
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(null (integerp (car ccl-program)))
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(null (listp (car (cdr ccl-program)))))
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(error "CCL: Invalid CCL program: %s" ccl-program))
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(if (null (vectorp ccl-program-vector))
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(setq ccl-program-vector (make-vector 8192 0)))
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(setq ccl-loop-head nil ccl-breaks nil)
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(setq ccl-current-ic 0)
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;; The first element is the buffer magnification.
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(ccl-embed-data (car ccl-program))
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;; The second element is the address of the start CCL code for
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;; processing end of input buffer (we call it eof-processor). We
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;; set it later.
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(ccl-increment-ic 1)
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;; Compile the main body of the CCL program.
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(ccl-compile-1 (car (cdr ccl-program)))
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;; Embed the address of eof-processor.
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(ccl-embed-data ccl-current-ic 1)
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;; Then compile eof-processor.
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(if (nth 2 ccl-program)
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(ccl-compile-1 (nth 2 ccl-program)))
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;; At last, embed termination code.
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(ccl-embed-code 'end 0 0)
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(let ((vec (make-vector ccl-current-ic 0))
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(i 0))
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(while (< i ccl-current-ic)
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(aset vec i (aref ccl-program-vector i))
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(setq i (1+ i)))
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vec))
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;; Signal syntax error.
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(defun ccl-syntax-error (cmd)
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(error "CCL: Syntax error: %s" cmd))
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;; Check if ARG is a valid CCL register.
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(defun ccl-check-register (arg cmd)
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(if (get arg 'ccl-register-number)
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arg
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(error "CCL: Invalid register %s in %s" arg cmd)))
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;; Check if ARG is a valid CCL command.
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(defun ccl-check-compile-function (arg cmd)
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(or (get arg 'ccl-compile-function)
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(error "CCL: Invalid command: %s" cmd)))
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;; In the following code, most ccl-compile-XXXX functions return t if
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;; they end with unconditional jump, else return nil.
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;; Compile CCL-BLOCK (see the syntax above).
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(defun ccl-compile-1 (ccl-block)
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(let (unconditional-jump
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cmd)
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(if (or (integerp ccl-block)
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(stringp ccl-block)
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(and ccl-block (symbolp (car ccl-block))))
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;; This block consists of single statement.
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(setq ccl-block (list ccl-block)))
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;; Now CCL-BLOCK is a list of statements. Compile them one by
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;; one.
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(while ccl-block
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(setq cmd (car ccl-block))
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(setq unconditional-jump
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(cond ((integerp cmd)
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;; SET statement for the register 0.
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(ccl-compile-set (list 'r0 '= cmd)))
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((stringp cmd)
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;; WRITE statement of string argument.
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(ccl-compile-write-string cmd))
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((listp cmd)
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;; The other statements.
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(cond ((eq (nth 1 cmd) '=)
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;; SET statement of the form `(REG = EXPRESSION)'.
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(ccl-compile-set cmd))
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((and (symbolp (nth 1 cmd))
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(get (nth 1 cmd) 'ccl-self-arith-code))
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;; SET statement with an assignment operation.
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(ccl-compile-self-set cmd))
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(t
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(funcall (ccl-check-compile-function (car cmd) cmd)
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cmd))))
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(t
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(ccl-syntax-error cmd))))
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(setq ccl-block (cdr ccl-block)))
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unconditional-jump))
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(defconst ccl-max-short-const (ash 1 19))
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(defconst ccl-min-short-const (ash -1 19))
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;; Compile SET statement.
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(defun ccl-compile-set (cmd)
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(let ((rrr (ccl-check-register (car cmd) cmd))
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(right (nth 2 cmd)))
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(cond ((listp right)
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;; CMD has the form `(RRR = (XXX OP YYY))'.
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(ccl-compile-expression rrr right))
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((integerp right)
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;; CMD has the form `(RRR = integer)'.
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(if (and (<= right ccl-max-short-const)
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(>= right ccl-min-short-const))
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(ccl-embed-code 'set-short-const rrr right)
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(ccl-embed-code 'set-const rrr 0)
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(ccl-embed-data right)))
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(t
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;; CMD has the form `(RRR = rrr [ array ])'.
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(ccl-check-register right cmd)
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(let ((ary (nth 3 cmd)))
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(if (vectorp ary)
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(let ((i 0) (len (length ary)))
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(ccl-embed-code 'set-array rrr len right)
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(while (< i len)
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(ccl-embed-data (aref ary i))
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(setq i (1+ i))))
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(ccl-embed-code 'set-register rrr 0 right))))))
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nil)
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;; Compile SET statement with ASSIGNMENT_OPERATOR.
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(defun ccl-compile-self-set (cmd)
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(let ((rrr (ccl-check-register (car cmd) cmd))
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(right (nth 2 cmd)))
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(if (listp right)
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;; CMD has the form `(RRR ASSIGN_OP (XXX OP YYY))', compile
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;; the right hand part as `(r7 = (XXX OP YYY))' (note: the
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;; register 7 can be used for storing temporary value).
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(progn
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(ccl-compile-expression 'r7 right)
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(setq right 'r7)))
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;; Now CMD has the form `(RRR ASSIGN_OP ARG)'. Compile it as
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;; `(RRR = (RRR OP ARG))'.
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(ccl-compile-expression
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rrr
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(list rrr (intern (substring (symbol-name (nth 1 cmd)) 0 -1)) right)))
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nil)
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;; Compile SET statement of the form `(RRR = EXPR)'.
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(defun ccl-compile-expression (rrr expr)
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(let ((left (car expr))
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(op (get (nth 1 expr) 'ccl-arith-code))
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(right (nth 2 expr)))
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(if (listp left)
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(progn
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;; EXPR has the form `((EXPR2 OP2 ARG) OP RIGHT)'. Compile
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;; the first term as `(r7 = (EXPR2 OP2 ARG)).'
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(ccl-compile-expression 'r7 left)
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(setq left 'r7)))
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;; Now EXPR has the form (LEFT OP RIGHT).
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(if (and (eq rrr left)
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(< op (length ccl-assign-arith-table)))
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;; Compile this SET statement as `(RRR OP= RIGHT)'.
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(if (integerp right)
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(progn
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(ccl-embed-code 'set-assign-expr-const rrr (ash op 3) 'r0)
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(ccl-embed-data right))
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(ccl-check-register right expr)
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(ccl-embed-code 'set-assign-expr-register rrr (ash op 3) right))
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;; Compile this SET statement as `(RRR = (LEFT OP RIGHT))'.
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(if (integerp right)
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(progn
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(ccl-embed-code 'set-expr-const rrr (ash op 3) left)
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(ccl-embed-data right))
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(ccl-check-register right expr)
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(ccl-embed-code 'set-expr-register
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rrr
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(logior (ash op 3) (get right 'ccl-register-number))
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left)))))
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|
||
;; 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))
|
||
left))))
|
||
|
||
(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)
|
||
(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)
|
||
(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. 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 ,(ccl-compile (eval ccl-program))))
|
||
(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)
|
||
|
||
;;; arch-tag: 836bcd27-63a1-4a56-b232-1145ecf823fb
|
||
;;; ccl.el ends here
|