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authordos-reis <gdr@axiomatics.org>2011-10-11 01:33:26 +0000
committerdos-reis <gdr@axiomatics.org>2011-10-11 01:33:26 +0000
commit5c9c9d744bf4f5c71b952f0ef0be9e04a6f92e49 (patch)
treec3f78291e4bfc4ba1269c2495f88ee1e2b398972 /src/interp/metalex.lisp
parent69e0541ffec8beb86c5e0fc04d9bec811be451cd (diff)
downloadopen-axiom-5c9c9d744bf4f5c71b952f0ef0be9e04a6f92e49.tar.gz
* interp/metalex.lisp (DEFUN-PARSE-TOKEN): Remove.
Move remaining to parsing.lisp. * interp/fnewmeta.lisp (PARSE-IntegerTok): Remove. (PARSE-FloatTok): Likewise. (PARSE-FormalParameter): Likewise. (PARSE-FormalParameterTok): Likewise. (PARSE-String): Likewise. (PARSE-Name): Likewise.
Diffstat (limited to 'src/interp/metalex.lisp')
-rw-r--r--src/interp/metalex.lisp279
1 files changed, 0 insertions, 279 deletions
diff --git a/src/interp/metalex.lisp b/src/interp/metalex.lisp
deleted file mode 100644
index ed1b588e..00000000
--- a/src/interp/metalex.lisp
+++ /dev/null
@@ -1,279 +0,0 @@
-;; Copyright (c) 1991-2002, The Numerical Algorithms Group Ltd.
-;; All rights reserved.
-;; Copyright (C) 2007-2011, Gabriel Dos Reis.
-;; All rights reserved.
-;;
-;; Redistribution and use in source and binary forms, with or without
-;; modification, are permitted provided that the following conditions are
-;; met:
-;;
-;; - Redistributions of source code must retain the above copyright
-;; notice, this list of conditions and the following disclaimer.
-;;
-;; - Redistributions in binary form must reproduce the above copyright
-;; notice, this list of conditions and the following disclaimer in
-;; the documentation and/or other materials provided with the
-;; distribution.
-;;
-;; - Neither the name of The Numerical Algorithms Group Ltd. nor the
-;; names of its contributors may be used to endorse or promote products
-;; derived from this software without specific prior written permission.
-;;
-;; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
-;; IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
-;; TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
-;; PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
-;; OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-;; EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-;; PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-;; PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-;; LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-;; NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-;; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-
-; NAME: MetaLex.lisp
-; PURPOSE: Parsing support routines for Meta code
-; CONTENTS:
-;
-; 1. META File Handling
-; 2. META Line Handling
-; 4. META Token Parsing Actions
-; 5. META Error Handling
-
-(IMPORT-MODULE "lexing")
-(IMPORT-MODULE "macros")
-(in-package "BOOT")
-
-; 0. Current I/O Stream definition
-
-(defparameter out-stream t "Current output stream.")
-(defparameter File-Closed nil "Way to stop EOF tests for console input.")
-
-
-; 1. Data structure declarations (defstructs) for parsing objects
-;
-; A. Line Buffer
-
-; 1A. A Line Buffer
-;
-; The philosophy of lines is that
-;
-; a) NEXT LINE will always get you a non-blank line or fail.
-; b) Every line is terminated by a blank character.
-;
-; Hence there is always a current character, because there is never a non-blank line,
-; and there is always a separator character between tokens on separate lines.
-; Also, when a line is read, the character pointer is always positioned ON the first
-; character.
-
-; FUNCTIONS DEFINED IN THIS SECTION:
-;
-; Line-New-Line, Line-Advance-Char, Line-Past-End-P, Line-At-End-P
-; Make-Line
-
-(defun Line-Print (line)
- (format out-stream "~&~5D> ~A~%" (|lineNumber| line) (|lineBuffer| Line))
- (format out-stream "~v@T^~%" (+ 7 (|lineCurrentIndex| line))))
-
-; *** Next Line
-
-(defun make-string-adjustable (s)
- (cond ((adjustable-array-p s) s)
- (t (make-array (array-dimensions s) :element-type 'character
- :adjustable t :initial-contents s))))
-
-(defun get-a-line (stream)
- (if (and (IS-CONSOLE stream) (not |$leanMode|))
- (|printPrompt|))
- (let ((ll (read-a-line stream)))
- (if (stringp ll) (make-string-adjustable ll) ll)))
-
-(defparameter Current-Fragment nil
- "A string containing remaining chars from readline; needed because
-Symbolics read-line returns embedded newlines in a c-m-Y.")
-
-(defun input-clear () (setq Current-Fragment nil))
-
-(defun Next-Lines-Clear () (setq |$lineStack| nil))
-
-(defun Next-Lines-Show ()
- (and |$lineStack| (format t "Currently preparsed lines are:~%~%"))
- (mapcar #'(lambda (line)
- (format t "~&~5D> ~A~%" (car line) (cdr Line)))
- |$lineStack|))
-
-
-; 3. Routines for handling lexical scanning
-;
-; Lexical scanning of tokens is performed off of the current line. No
-; token can span more than 1 line. All real I/O is handled in a line-oriented
-; fashion (in a slight paradox) below the character level. All character
-; routines implicitly assume the parameter |$spadLine|. We do not make
-; |$spadLine| an explicit optional parameter for reasons of efficiency.
-
-(defmacro current-line-print () '(Line-Print |$spadLine|))
-
-(defmacro current-line-show ()
- `(if (|linePastEnd?| |$spadLine|)
- (format t "~&The current line is empty.~%")
- (progn (format t "~&The current line is:~%~%")
- (current-line-print))))
-
-(defmacro current-line-clear () `(|lineClear!| |$spadLine|))
-
-(defun read-a-line (&optional (stream t))
- (let (cp)
- (if (and Current-Fragment (> (length Current-Fragment) 0))
- (let ((line (with-input-from-string
- (s Current-Fragment :index cp :start 0)
- (read-line s nil nil))))
- (setq Current-Fragment (subseq Current-Fragment cp))
- line)
- (prog nil
- (if (stream-eof in-stream)
- (progn (setq File-Closed t *EOF* t)
- (|lineNewLine!| (make-string 0) |$spadLine|)
- (return nil)))
- (if (setq Current-Fragment (read-line stream))
- (return (read-a-line stream)))))))
-
-; *** Print New Line
-
-(defparameter Printer-Line-Stack (|makeStack|)
- "Stack of output listing lines waiting to print. [local to PRINT-NEW-LINE]")
-
-(defparameter Read-Quietly nil
- "Whether or not to produce an output listing. [local to PRINT-NEW-LINE]")
-
-(defun Print-New-Line (string &optional (strm |$OutputStream|))
- "Makes output listings."
- (if Read-Quietly (|stackPush!| (copy-tree string) Printer-Line-Stack)
- (progn (mapc #'(lambda (x) (format strm "; ~A~%" x) (terpri))
- (|reverse!| (|stackStore| Printer-Line-Stack)))
- (|stackClear!| Printer-Line-Stack)
- (format strm "~&; ~A~%" string))))
-
-; 1C. Token
-(defun Token-Print (token)
- (format out-stream "(token (symbol ~S) (type ~S))~%"
- (|tokenSymbol| token) (|tokenType| token)))
-
-(defun reduce-stack-show ()
- (let ((store (|stackStore| |$reduceStack|))
- (*print-pretty* t))
- (if store
- (progn (format t "~%Reduction stack contains:~%")
- (mapcar #'(lambda (x)
- (if (eq (type-of x) 'token)
- (describe x)
- (print x)))
- (|stackStore| |$reduceStack|)))
- (format t "~%There is nothing on the reduction stack.~%"))))
-
-
-; *** 3. META Token Handling
-
-; STRING: "'" { Chars - "'" }* "'"
-; BSTRING: "[" ... "]*"
-; ID: letters, _ and then numbers
-; NUMBER: digits, ., digits, e, +-, digits
-
-; 3A (1) Token Handling.
-
-; Tokens are acquired from a stream of characters. Lexical analysis is performed
-; by the functiond Get Token. One-token lookahead is maintained in variables
-; |$CurrentToken| and |$NextToken| by procedures Current Token, Next Token, and
-; Advance Token. The functions Match Current Token and Match Next Token recognize
-; classes of tokens, by type, or by type and symbol. The current and next tokens
-; can be shoved back on the input stream (to the current line) with Unget-Tokens.
-
-(defmacro Defun-Parse-Token (token)
- `(defun ,(intern (concatenate 'string "PARSE-" (string token))) ()
- (let* ((tok (|matchCurrentToken| ',token))
- (symbol (if tok (|tokenSymbol| tok))))
- (if tok (progn (|pushReduction|
- ',(intern (concatenate 'string (string token)
- "-TOKEN"))
- (copy-tree symbol))
- (|advanceToken|)
- t)))))
-
-(defun token-stack-show ()
- (if (= |$validTokens| 0) (format t "~%There are no valid tokens.~%")
- (format t "~%The number of valid tokens is ~S.~%" |$validTokens|))
- (if (> |$validTokens| 0)
- (progn (format t "The current token is~%")
- (describe |$currentToken|)))
- (if (> |$validTokens| 1)
- (progn (format t "The next token is~%")
- (describe |$nextToken|)))
- (if (|tokenType| |$priorToken|)
- (progn (format t "The prior token was~%")
- (describe |$priorToken|))))
-
-
-(defun-parse-token STRING)
-(defun-parse-token BSTRING)
-(defun-parse-token IDENTIFIER)
-(defun-parse-token NUMBER)
-
-; Parsing of operator tokens depends on tables initialized by BOTTOMUP.LISP
-
-(defun-parse-token SPADSTRING)
-(defun-parse-token KEYWORD)
-(defun-parse-token ARGUMENT-DESIGNATOR)
-
-(defun |PARSE-OperatorFunctionName| ()
- (let ((id (|makeSymbolOf| (or (|matchCurrentToken| 'keyword)
- (|matchCurrentToken| 'gliph)
- (|matchCurrentToken| 'special-char)))))
- (when (and id (member id |$OperatorFunctionNames|))
- (|pushReduction| '|PARSE-OperatorFunctionName| id)
- (action (|advanceToken|)))))
-
-(defun make-adjustable-string (n)
- (make-array (list n) :element-type 'character :adjustable t))
-
-(defun get-number-token (token)
- "Take a number off the input stream."
- (prog ((buf (make-adjustable-string 0)))
- nu1
- (suffix (|currentChar|) buf) ; Integer part
- (let ((next-chr (|nextChar|)))
- (cond ((digitp next-chr)
- (|advanceChar!|)
- (go nu1))))
- (|advanceChar!|)
- (return (|tokenInstall| (read-from-string buf)
- 'number token
- (size buf) ;used to keep track of digit count
- ))))
-
-; *** 4. META Auxiliary Parsing Actions
-
-(defparameter Meta_Prefix nil)
-
-(defun make-defun (nametok vars body)
- (let ((name (INTERN (STRCONC |META_PREFIX| nametok))))
- (if vars
- `(DEFUN ,name ,vars (declare (special . ,vars)) ,body)
- `(DEFUN ,name ,vars ,body))))
-
-(defun print-fluids (fluids)
- (terpri out-stream)
- (mapcar #'(lambda (x) (format out-stream "~&(DEFPARAMETER ~S NIL)~%" x)) fluids)
- (terpri out-stream))
-
-(defun print-package (package)
- (format out-stream "~&~%(IN-PACKAGE ~S )~%~%" package))
-
-(defun set-prefix (prefix) (setq META_PREFIX prefix))
-
-(defun print-rule (x) (print x out-stream) (format out-stream "~%~%"))
-
-; *** 5. META Error Handling
-
-(defparameter $num_of_meta_errors 0)
-
-(defparameter Meta_Errors_Occurred nil "Did any errors occur")