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-rw-r--r--src/interp/newaux.lisp101
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-;; Copyright (c) 1991-2002, The Numerical ALgorithms Group Ltd.
-;; All rights reserved.
-;; Copyright (C) 2007-2012, 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.
-
-; PURPOSE: This file sets up properties which are used by the Boot lexical
-; analyzer for bottom-up recognition of operators. Also certain
-; other character-class definitions are included, as well as
-; table accessing functions.
-;
-; ORGANIZATION: Each section is organized in terms of Creation and Access code.
-;
-; 1. Led and Nud Tables
-; 2. GLIPH Table
-; 4. GENERIC Table
-; 5. Character syntax class predicates
-
-; **** 1. LED and NUD Tables
-
-; ** TABLE PURPOSE
-
-; Led and Nud have to do with operators. An operator with a Led property takes
-; an operand on its left (infix/suffix operator).
-
-; An operator with a Nud takes no operand on its left (prefix/nilfix).
-; Some have both (e.g. - ). This terminology is from the Pratt parser.
-; The translator for Scratchpad II is a modification of the Pratt parser which
-; branches to special handlers when it is most convenient and practical to
-; do so (Pratt's scheme cannot handle local contexts very easily).
-
-; Both LEDs and NUDs have right and left binding powers. This is meaningful
-; for prefix and infix operators. These powers are stored as the values of
-; the LED and NUD properties of an atom, if the atom has such a property.
-; The format is:
-
-; <Operator Left-Binding-Power Right-Binding-Power <Special-Handler>>
-
-; where the Special-Handler is the name of a function to be evaluated when that
-; keyword is encountered.
-
-; The default values of Left and Right Binding-Power are NIL. NIL is a
-; legitimate value signifying no precedence. If the Special-Handler is NIL,
-; this is just an ordinary operator (as opposed to a surfix operator like
-; if-then-else).
-
-
-
-(IMPORT-MODULE "sys-macros")
-(IMPORT-MODULE "sys-utility")
-(in-package "BOOT")
-
-; ** TABLE CREATION
-
-(defparameter OpAssoc nil
- "Information used by OUT BOOT operator pretty printing routines")
-
-(defun MAKEOP (X Y KEYNAME)
- (if (OR (NOT (CDR X)) (NUMBERP (SECOND X)))
- (SETQ X (CONS (FIRST X) X)))
- (if (AND (alpha-char-p (ELT (STRINGIMAGE (FIRST X)) 0))
- (NOT (MEMBER (FIRST X) (EVAL KEYNAME))))
- (SET KEYNAME (CONS (FIRST X) (EVAL KEYNAME))))
- (MAKEPROP (FIRST X) Y X)
- (SETQ OPASSOC (ADDASSOC Y (CONS (CONS X X) (LASSOC Y OPASSOC)) OPASSOC))
- (SECOND X))
-
-(defvar |PARSE-NewKEY| nil) ;;list of keywords
-
-(defun SPECIALCASESYNTAX () (OR (AND (char= TOK '#\#) (DIGITP CHR))))
-
-(defun TERMINATOR (CHR)
- (member CHR '(#\ #\( #\) #\. #\; #\, #\Return)) :test #'char=)
-