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| <html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <title>CodeMirror: Scheme mode</title> | |
| <link rel="stylesheet" href="../../lib/codemirror.css"> | |
| <script src="../../lib/codemirror.js"></script> | |
| <script src="scheme.js"></script> | |
| <style>.CodeMirror {background: #f8f8f8;}</style> | |
| <link rel="stylesheet" href="../../doc/docs.css"> | |
| </head> | |
| <body> | |
| <h1>CodeMirror: Scheme mode</h1> | |
| <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> | |
| </body> | |
| </html> | |