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;;; -*- Mode: LISP; Syntax: COMMON-LISP; Package: CL-INTERPOL; Base: 10 -*-
;;; $Header: /usr/local/cvsrep/cl-interpol/specials.lisp,v 1.12 2008/07/23 13:58:40 edi Exp $
;;; Copyright (c) 2003-2008, Dr. Edmund Weitz. 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.
;;; THIS SOFTWARE IS PROVIDED BY THE AUTHOR 'AS IS' AND ANY EXPRESSED
;;; 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 AUTHOR 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.
(in-package :cl-interpol)
(defvar *list-delimiter* #\Space
"What is inserted between the elements of a list which is
interpolated by #\@.")
(defvar *inner-delimiters* '((#\( . #\))
(#\{ . #\})
(#\< . #\>)
(#\[ . #\]))
"Legal delimiters for interpolation with #\$ and #\@.")
(defvar *outer-delimiters* '((#\( . #\))
(#\{ . #\})
(#\< . #\>)
(#\[ . #\])
#\/ #\| #\" #\' #\#)
"Legal outer delimiters for CL-INTERPOL strings.")
(defvar *regex-delimiters* '(#\/)
"Outer delimiters which automatically enable regex mode.")
(defvar *unicode-aliases*
(make-hash-table :test #'equalp)
"A hash table which maps Unicode aliases to their real names.")
(defvar *optional-delimiters-p* nil
"Whether text following $ or @ should interpolate even without a
following delimiter. Lexical variables are handled correctly,
but the rules are somewhat complex -- see the docs for details.")
(defvar *interpolate-format-directives* nil
"Whether to allow ~X(...) as format control directives in interpolated strings.")
(defmacro defvar-unbound (variable-name documentation)
"Like DEFVAR, but the variable will be unbound rather than getting
an initial value. This is useful for variables which should have no
global value but might have a dynamically bound value."
;; stolen from comp.lang.lisp article <k7727i3s.fsf@comcast.net> by
;; "prunesquallor@comcast.net"
`(eval-when (:load-toplevel :compile-toplevel :execute)
(defvar ,variable-name)
(setf (documentation ',variable-name 'variable)
,documentation)))
(defvar-unbound *saw-backslash*
"Whether we have to re-process an \L or \U because it closes several
scopes.")
(defvar-unbound *pair-level*
"")
(defvar-unbound *stream*
"Bound to the stream which is read from while parsing a string.")
(defvar-unbound *start-char*
"Bound to the opening outer delimiter while parsing a string.")
(defvar-unbound *term-char*
"Bound to the closing outer delimiter while parsing a string.")
(defvar *previous-readtables* nil
"A stack which holds the previous readtables that have been pushed
here by ENABLE-INTERPOL-SYNTAX.")
(defvar-unbound *readtable-copy*
"Bound to the current readtable if it has to be temporarily
modified.")
;; stuff for Nikodemus Siivola's HYPERDOC
;; see <http://common-lisp.net/project/hyperdoc/>
;; and <http://www.cliki.net/hyperdoc>
(defvar *hyperdoc-base-uri* "http://weitz.de/cl-interpol/")
(let ((exported-symbols-alist
(loop for symbol being the external-symbols of :cl-interpol
collect (cons symbol
(concatenate 'string
"#"
(string-downcase symbol))))))
(defun hyperdoc-lookup (symbol type)
(declare (ignore type))
(cdr (assoc symbol
exported-symbols-alist
:test #'eq))))
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