Current File : //usr/lib/X11/xedit/lisp/progmodes/lisp.lsp
;;
;; Copyright (c) 2002 by The XFree86 Project, Inc.
;;
;; Permission is hereby granted, free of charge, to any person obtaining a
;; copy of this software and associated documentation files (the "Software"),
;; to deal in the Software without restriction, including without limitation
;; the rights to use, copy, modify, merge, publish, distribute, sublicense,
;; and/or sell copies of the Software, and to permit persons to whom the
;; Software is furnished to do so, subject to the following conditions:
;;
;; The above copyright notice and this permission notice shall be included in
;; all copies or substantial portions of the Software.
;;
;; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
;; IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
;; FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
;; THE XFREE86 PROJECT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
;; WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
;; OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
;; SOFTWARE.
;;
;; Except as contained in this notice, the name of the XFree86 Project shall
;; not be used in advertising or otherwise to promote the sale, use or other
;; dealings in this Software without prior written authorization from the
;; XFree86 Project.
;;
;; Author: Paulo César Pereira de Andrade
;;
;;
;; $XFree86: xc/programs/xedit/lisp/modules/progmodes/lisp.lsp,v 1.9 2003/01/30 02:46:26 paulo Exp $
;;
(require "syntax")
(require "indent")
(in-package "XEDIT")
(defsynprop *prop-special*
"special"
:font "*courier-bold-r*-12-*"
:foreground "NavyBlue"
)
(defsynprop *prop-quote*
"quote"
:font "*courier-bold-r*-12-*"
:foreground "Red4"
)
(defsynprop *prop-package*
"package"
:font "*lucidatypewriter-medium-r*-12-*"
:foreground "Gold4"
)
(defsynprop *prop-unreadable*
"unreadable"
:font "*courier-medium-r*-12-*"
:foreground "Gray25"
:underline t
)
(defsynoptions *lisp-DEFAULT-style*
;; Positive number. Basic indentation.
(:indentation . 2)
;; Boolean. Move cursor to the indent column after pressing <Enter>?
(:newline-indent . t)
;; Boolean. Use spaces instead of tabs to fill indentation?
(:emulate-tabs . nil)
;; Boolean. Remove extra spaces from previous line.
;; This should default to T when newline-indent is not NIL.
(:trim-blank-lines . t)
;; Boolean. If this hash-table entry is set, no indentation is done.
;; Useful to temporarily disable indentation.
(:disable-indent . nil)
)
(defvar *lisp-mode-options* *lisp-DEFAULT-style*)
(defindent *lisp-mode-indent* :main
;; this must be the first token
(indtoken "^\\s*" :indent
:code (or *offset* (setq *offset* (+ *ind-offset* *ind-length*))))
;; ignore single line comments
(indtoken ";.*$" nil)
;; multiline comments
(indtoken "|#" :comment :nospec t :begin :comment)
;; characters
(indtoken "#\\\\(\\W|\\w+(-\\w+)?)" :character)
;; numbers
(indtoken
(string-concat
"(\\<|[+-])\\d+("
;; integers
"(\\>|\\.(\\s|$))|"
;; ratios
"/\\d+\\>|"
;;floats
"\\.?\\d*([SsFfDdLlEe][+-]?\\d+)?\\>"
")")
:number)
;; symbols, with optional package
(indtoken
(string-concat
;; optional package name and ending ':'
"([A-Za-z_0-9%-]+:)?"
;; internal symbol if after package name, or keyword
":?"
;; symbol name
"[][{}A-Za-z_0-9!$%&/<=>^~*+-]+")
:symbol)
;; strings in the same line
(indtoken "\"([^\\\"]|\\\\.)*\"" :string)
;; multiline strings
(indtoken "\"" :cstring :nospec t :begin :string)
;; "quoted" symbols in the same line
(indtoken "\\|([^\\|]|\\\\.)*\\|" :symbol)
;; multiline
(indtoken "|" :csymbol :nospec t :begin :symbol)
(indtoken "#" :hash :nospec t)
(indinit (parens 0))
(indtoken "(" :oparen :nospec t :code (incf parens))
(indtoken ")" :cparen :nospec t :code (decf parens))
(indtable :comment
;; multiline comments can nest
(indtoken "|#" nil :nospec t :begin :comment)
(indtoken "#|" nil :nospec t :switch -1))
(indtable :string
;; Ignore escaped characters
(indtoken "\\." nil)
;; Return to the toplevel when the start of the string is found
(indtoken "\"" :ostring :nospec t :switch -1))
(indtable :symbol
;; Ignore escaped characters
(indtoken "\\." nil)
;; Return to the toplevel when the start of the symbol is found
(indtoken "|" :osymbol :nospec t :switch -1))
;; ignore comments
(indreduce nil
t
((:comment)))
;; reduce multiline strings
(indreduce :string
t
((:ostring (not :ostring) :cstring)))
;; reduce multiline symbols
(indreduce :symbol
t
((:osymbol (not :osymbol) :csymbol)))
;; reduce basic types, don't care if inside list or not
(indreduce :element
t
((:number)
(:string)
(:character)
(:element :element)
(:indent :element)))
(indreduce :symbol
t
((:symbol :symbol)
(:symbol :element)
(:indent :symbol)))
;; the "real" indentation value, to make easier parsing code like:
;; (foo (bar (baz (blah
;; ^ ^
;; | |
;; indent |
;; effective indentation to be used
(indinit (indent 0))
;; indentation values of opening parenthesis.
(indinit stack)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; if before current line and open parenthesis >= 0, use indentation
;; of current line to calculate relative indentation.
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(indreduce :oparen ;; simple list?
(and (>= parens 0) (< *ind-offset* *ind-start*))
((:indent :oparen))
(setq
*indent* (offset-indentation (+ *ind-offset* *ind-length*) :resolve t)
indent *indent*)
(indent-macro-reject-left))
;; reduce list if there isn't indentation change
(indreduce :element
t
((:oparen (not :oparen) :cparen)))
(indresolve :oparen
(setq
*indent*
(offset-indentation
(+ *ind-offset* *ind-length* -1 *base-indent*) :align t))
(push *indent* stack)
(incf indent *base-indent*)
(if (< *indent* indent) (setq *indent* indent)))
(indresolve :cparen
(decf indent *base-indent*)
(setq *indent* (pop stack))
(if (null stack)
(setq *indent* indent)
(setq *indent* (car stack))))
)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Find a "good" offset to start parsing backwards, so that it should
;; always generate the same results.
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defun lisp-offset-indent (&aux char (point (scan (point) :eol :left)))
;; skip spaces
(while (member (setq char (char-after point)) indent-spaces)
(incf point))
(if (member char '(#\))) (1+ point) point))
(defun lisp-should-indent (options &aux char point start)
(when (hash-table-p options)
;; check if previous line has extra spaces
(and (gethash :trim-blank-lines options)
(indent-clear-empty-line))
;; indentation disabled?
(and (gethash :disable-indent options)
(return-from lisp-should-indent))
(setq
point (point)
char (char-before (point))
start (scan point :eol :left))
;; at the start of a line
(and (= point start)
(return-from lisp-should-indent (gethash :newline-indent options)))
;; if first character
(and (= point (1+ start)) (return-from lisp-should-indent t))
;; if closing parenthesis and first nonblank char
(when (and (characterp char) (char= char #\)))
(decf point)
(while
(and (> point start) (member (char-before point) indent-spaces))
(decf point))
(return-from lisp-should-indent (<= point start)))
)
;; should not indent
nil)
(defun lisp-indent (syntax syntable)
(let*
((options (syntax-options syntax))
*base-indent*)
(or (lisp-should-indent options) (return-from lisp-indent))
(setq *base-indent* (gethash :indentation options 2))
(indent-macro
*lisp-mode-indent*
(lisp-offset-indent)
(gethash :emulate-tabs options))))
(compile 'lisp-indent)
(defsyntax *lisp-mode* :main nil #'lisp-indent *lisp-mode-options*
;; highlight car and parenthesis
(syntoken "\\(+\\s*[][{}A-Za-z_0-9!$%&/<=>?^~*:+-]*\\)*"
:property *prop-keyword*)
(syntoken "\\)+" :property *prop-keyword*)
;; nil and t
(syntoken "\\<(nil|t)\\>" :icase t :property *prop-special*)
(syntoken "|" :nospec t :begin :unreadable :contained t)
;; keywords
(syntoken ":[][{}A-Za-z_0-9!$%&/<=>^~+-]+" :property *prop-constant*)
;; special symbol.
(syntoken "\\*[][{}A-Za-z_0-9!$%&7=?^~+-]+\\*"
:property *prop-special*)
;; special identifiers
(syntoken "&(aux|key|optional|rest)\\>" :icase t :property *prop-constant*)
;; numbers
(syntoken
;; since lisp is very liberal in what can be a symbol, this pattern
;; will not always work as expected, since \< and \> will not properly
;; work for all characters that may be in a symbol name
(string-concat
"(\\<|[+-])\\d+("
;; integers
"(\\>|\\.(\\s|$))|"
;; ratios
"/\\d+\\>|"
;;floats
"\\.?\\d*([SsFfDdLlEe][+-]?\\d+)?\\>"
")")
:property *prop-number*)
;; characters
(syntoken "#\\\\(\\W|\\w+(-\\w+)?)" :property *prop-constant*)
;; quotes
(syntoken "[`'.]|,@?" :property *prop-quote*)
;; package names
(syntoken "[A-Za-z_0-9%-]+::?" :property *prop-package*)
;; read time evaluation
(syntoken "#\\d+#" :property *prop-preprocessor*)
(syntoken "#([+'cCsS-]|\\d+[aA=])?" :begin :preprocessor :contained t)
(syntoken "\\c" :property *prop-control*)
;; symbols, do nothing, just resolve conflicting matches
(syntoken "[][{}A-Za-z_0-9!$%&/<=>^~*+-]+")
(syntable :simple-comment *prop-comment* nil
(syntoken "$" :switch -1)
(syntoken "XXX|FIXME|TODO" :property *prop-annotation*))
(syntable :comment *prop-comment* nil
;; comments can nest
(syntoken "#|" :nospec t :begin :comment)
;; return to previous state
(syntoken "|#" :nospec t :switch -1)
(syntoken "XXX|FIXME|TODO" :property *prop-annotation*))
(syntable :unreadable *prop-unreadable* nil
;; ignore escaped characters
(syntoken "\\\\.")
(syntoken "|" :nospec t :switch -1))
(syntable :string *prop-string* nil
;; ignore escaped characters
(syntoken "\\\\.")
(syntoken "\"" :nospec t :switch -1))
(syntable :preprocessor *prop-preprocessor* nil
;; a symbol
(syntoken "[][{}A-Za-z_0-9!$%&/<=>^~:*+-]+" :switch -1)
;; conditional expression
(syntoken "(" :nospec t :begin :preprocessor-expression :contained t)
(syntable :preprocessor-expression *prop-preprocessor* nil
;; recursive
(syntoken "(" :nospec t :begin :preprocessor-recursive :contained t)
(syntoken ")" :nospec t :switch -2)
(syntable :preprocessor-recursive *prop-preprocessor* nil
(syntoken "(" :nospec t
:begin :preprocessor-recursive
:contained t)
(syntoken ")" :nospec t :switch -1)
(synaugment :comments-and-strings))
(synaugment :comments-and-strings))
(synaugment :comments-and-strings))
(syntable :comments-and-strings nil nil
(syntoken "\"" :nospec t :begin :string :contained t)
(syntoken "#|" :nospec t :begin :comment :contained t)
(syntoken ";" :begin :simple-comment :contained t))
(synaugment :comments-and-strings)
)
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