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96d4a3ecf7
Due to historical reasons, the code is in subfolder "1". With SVN removal, we place the code back and remove the annoying "1" folder.
78 lines
2.5 KiB
HTML
78 lines
2.5 KiB
HTML
<!doctype html>
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<title>CodeMirror: Scheme mode</title>
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<meta charset="utf-8"/>
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<link rel=stylesheet href="../../doc/docs.css">
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<link rel="stylesheet" href="../../lib/codemirror.css">
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<script src="../../lib/codemirror.js"></script>
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<script src="scheme.js"></script>
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<style>.CodeMirror {background: #f8f8f8;}</style>
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<div id=nav>
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<a href="http://codemirror.net"><img id=logo src="../../doc/logo.png"></a>
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<ul>
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<li><a href="../../index.html">Home</a>
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<li><a href="../../doc/manual.html">Manual</a>
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<li><a href="https://github.com/marijnh/codemirror">Code</a>
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</ul>
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<ul>
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<li><a href="../index.html">Language modes</a>
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<li><a class=active href="#">Scheme</a>
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</ul>
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</div>
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<article>
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<h2>Scheme mode</h2>
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<form><textarea id="code" name="code">
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; See if the input starts with a given symbol.
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(define (match-symbol input pattern)
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(cond ((null? (remain input)) #f)
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((eqv? (car (remain input)) pattern) (r-cdr input))
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(else #f)))
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; Allow the input to start with one of a list of patterns.
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(define (match-or input pattern)
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(cond ((null? pattern) #f)
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((match-pattern input (car pattern)))
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(else (match-or input (cdr pattern)))))
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; Allow a sequence of patterns.
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(define (match-seq input pattern)
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(if (null? pattern)
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input
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(let ((match (match-pattern input (car pattern))))
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(if match (match-seq match (cdr pattern)) #f))))
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; Match with the pattern but no problem if it does not match.
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(define (match-opt input pattern)
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(let ((match (match-pattern input (car pattern))))
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(if match match input)))
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; Match anything (other than '()), until pattern is found. The rather
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; clumsy form of requiring an ending pattern is needed to decide where
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; the end of the match is. If none is given, this will match the rest
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; of the sentence.
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(define (match-any input pattern)
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(cond ((null? (remain input)) #f)
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((null? pattern) (f-cons (remain input) (clear-remain input)))
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(else
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(let ((accum-any (collector)))
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(define (match-pattern-any input pattern)
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(cond ((null? (remain input)) #f)
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(else (accum-any (car (remain input)))
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(cond ((match-pattern (r-cdr input) pattern))
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(else (match-pattern-any (r-cdr input) pattern))))))
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(let ((retval (match-pattern-any input (car pattern))))
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(if retval
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(f-cons (accum-any) retval)
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#f))))))
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</textarea></form>
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<script>
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var editor = CodeMirror.fromTextArea(document.getElementById("code"), {});
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</script>
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<p><strong>MIME types defined:</strong> <code>text/x-scheme</code>.</p>
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</article>
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