mirror of
https://github.com/renbaoshuo/S2OJ.git
synced 2024-11-25 17:08:42 +00:00
78 lines
2.5 KiB
HTML
78 lines
2.5 KiB
HTML
|
<!doctype html>
|
||
|
|
|
||
|
|
<title>CodeMirror: Scheme mode</title>
|
||
|
|
<meta charset="utf-8"/>
|
||
|
|
<link rel=stylesheet href="../../doc/docs.css">
|
||
|
|
|
||
|
|
<link rel="stylesheet" href="../../lib/codemirror.css">
|
||
|
|
<script src="../../lib/codemirror.js"></script>
|
||
|
|
<script src="scheme.js"></script>
|
||
|
|
<style>.CodeMirror {background: #f8f8f8;}</style>
|
||
|
|
<div id=nav>
|
||
|
|
<a href="http://codemirror.net"><img id=logo src="../../doc/logo.png"></a>
|
||
|
|
|
||
|
|
<ul>
|
||
|
|
<li><a href="../../index.html">Home</a>
|
||
|
|
<li><a href="../../doc/manual.html">Manual</a>
|
||
|
|
<li><a href="https://github.com/marijnh/codemirror">Code</a>
|
||
|
|
</ul>
|
||
|
|
<ul>
|
||
|
|
<li><a href="../index.html">Language modes</a>
|
||
|
|
<li><a class=active href="#">Scheme</a>
|
||
|
|
</ul>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<article>
|
||
|
|
<h2>Scheme mode</h2>
|
||
|
|
<form><textarea id="code" name="code">
|
||
|
|
; See if the input starts with a given symbol.
|
||
|
|
(define (match-symbol input pattern)
|
||
|
|
(cond ((null? (remain input)) #f)
|
||
|
|
((eqv? (car (remain input)) pattern) (r-cdr input))
|
||
|
|
(else #f)))
|
||
|
|
|
||
|
|
; Allow the input to start with one of a list of patterns.
|
||
|
|
(define (match-or input pattern)
|
||
|
|
(cond ((null? pattern) #f)
|
||
|
|
((match-pattern input (car pattern)))
|
||
|
|
(else (match-or input (cdr pattern)))))
|
||
|
|
|
||
|
|
; Allow a sequence of patterns.
|
||
|
|
(define (match-seq input pattern)
|
||
|
|
(if (null? pattern)
|
||
|
|
input
|
||
|
|
(let ((match (match-pattern input (car pattern))))
|
||
|
|
(if match (match-seq match (cdr pattern)) #f))))
|
||
|
|
|
||
|
|
; Match with the pattern but no problem if it does not match.
|
||
|
|
(define (match-opt input pattern)
|
||
|
|
(let ((match (match-pattern input (car pattern))))
|
||
|
|
(if match match input)))
|
||
|
|
|
||
|
|
; Match anything (other than '()), until pattern is found. The rather
|
||
|
|
; clumsy form of requiring an ending pattern is needed to decide where
|
||
|
|
; the end of the match is. If none is given, this will match the rest
|
||
|
|
; of the sentence.
|
||
|
|
(define (match-any input pattern)
|
||
|
|
(cond ((null? (remain input)) #f)
|
||
|
|
((null? pattern) (f-cons (remain input) (clear-remain input)))
|
||
|
|
(else
|
||
|
|
(let ((accum-any (collector)))
|
||
|
|
(define (match-pattern-any input pattern)
|
||
|
|
(cond ((null? (remain input)) #f)
|
||
|
|
(else (accum-any (car (remain input)))
|
||
|
|
(cond ((match-pattern (r-cdr input) pattern))
|
||
|
|
(else (match-pattern-any (r-cdr input) pattern))))))
|
||
|
|
(let ((retval (match-pattern-any input (car pattern))))
|
||
|
|
(if retval
|
||
|
|
(f-cons (accum-any) retval)
|
||
|
|
#f))))))
|
||
|
|
</textarea></form>
|
||
|
|
<script>
|
||
|
|
var editor = CodeMirror.fromTextArea(document.getElementById("code"), {});
|
||
|
|
</script>
|
||
|
|
|
||
|
|
<p><strong>MIME types defined:</strong> <code>text/x-scheme</code>.</p>
|
||
|
|
|
||
|
|
</article>
|