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-rwxr-xr-ximports/codemirror/mode/scheme/index.html64
-rw-r--r--imports/codemirror/mode/scheme/scheme.js202
2 files changed, 266 insertions, 0 deletions
diff --git a/imports/codemirror/mode/scheme/index.html b/imports/codemirror/mode/scheme/index.html
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+++ b/imports/codemirror/mode/scheme/index.html
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1<!doctype html>
2<html>
3 <head>
4 <title>CodeMirror: Scheme mode</title>
5 <link rel="stylesheet" href="../../lib/codemirror.css">
6 <script src="../../lib/codemirror.js"></script>
7 <script src="scheme.js"></script>
8 <style>.CodeMirror {background: #f8f8f8;}</style>
9 <link rel="stylesheet" href="../../doc/docs.css">
10 </head>
11 <body>
12 <h1>CodeMirror: Scheme mode</h1>
13 <form><textarea id="code" name="code">
14; See if the input starts with a given symbol.
15(define (match-symbol input pattern)
16 (cond ((null? (remain input)) #f)
17 ((eqv? (car (remain input)) pattern) (r-cdr input))
18 (else #f)))
19
20; Allow the input to start with one of a list of patterns.
21(define (match-or input pattern)
22 (cond ((null? pattern) #f)
23 ((match-pattern input (car pattern)))
24 (else (match-or input (cdr pattern)))))
25
26; Allow a sequence of patterns.
27(define (match-seq input pattern)
28 (if (null? pattern)
29 input
30 (let ((match (match-pattern input (car pattern))))
31 (if match (match-seq match (cdr pattern)) #f))))
32
33; Match with the pattern but no problem if it does not match.
34(define (match-opt input pattern)
35 (let ((match (match-pattern input (car pattern))))
36 (if match match input)))
37
38; Match anything (other than '()), until pattern is found. The rather
39; clumsy form of requiring an ending pattern is needed to decide where
40; the end of the match is. If none is given, this will match the rest
41; of the sentence.
42(define (match-any input pattern)
43 (cond ((null? (remain input)) #f)
44 ((null? pattern) (f-cons (remain input) (clear-remain input)))
45 (else
46 (let ((accum-any (collector)))
47 (define (match-pattern-any input pattern)
48 (cond ((null? (remain input)) #f)
49 (else (accum-any (car (remain input)))
50 (cond ((match-pattern (r-cdr input) pattern))
51 (else (match-pattern-any (r-cdr input) pattern))))))
52 (let ((retval (match-pattern-any input (car pattern))))
53 (if retval
54 (f-cons (accum-any) retval)
55 #f))))))
56</textarea></form>
57 <script>
58 var editor = CodeMirror.fromTextArea(document.getElementById("code"), {});
59 </script>
60
61 <p><strong>MIME types defined:</strong> <code>text/x-scheme</code>.</p>
62
63 </body>
64</html>
diff --git a/imports/codemirror/mode/scheme/scheme.js b/imports/codemirror/mode/scheme/scheme.js
new file mode 100644
index 00000000..45ae1822
--- /dev/null
+++ b/imports/codemirror/mode/scheme/scheme.js
@@ -0,0 +1,202 @@
1/**
2 * Author: Koh Zi Han, based on implementation by Koh Zi Chun
3 */
4CodeMirror.defineMode("scheme", function (config, mode) {
5 var BUILTIN = "builtin", COMMENT = "comment", STRING = "string",
6 ATOM = "atom", NUMBER = "number", BRACKET = "bracket", KEYWORD="keyword";
7 var INDENT_WORD_SKIP = 2, KEYWORDS_SKIP = 1;
8
9 function makeKeywords(str) {
10 var obj = {}, words = str.split(" ");
11 for (var i = 0; i < words.length; ++i) obj[words[i]] = true;
12 return obj;
13 }
14
15 var keywords = makeKeywords("λ case-lambda call/cc class define-class exit-handler field import inherit init-field interface let*-values let-values let/ec mixin opt-lambda override protect provide public rename require require-for-syntax syntax syntax-case syntax-error unit/sig unless when with-syntax and begin call-with-current-continuation call-with-input-file call-with-output-file case cond define define-syntax delay do dynamic-wind else for-each if lambda let let* let-syntax letrec letrec-syntax map or syntax-rules abs acos angle append apply asin assoc assq assv atan boolean? caar cadr call-with-input-file call-with-output-file call-with-values car cdddar cddddr cdr ceiling char->integer char-alphabetic? char-ci<=? char-ci<? char-ci=? char-ci>=? char-ci>? char-downcase char-lower-case? char-numeric? char-ready? char-upcase char-upper-case? char-whitespace? char<=? char<? char=? char>=? char>? char? close-input-port close-output-port complex? cons cos current-input-port current-output-port denominator display eof-object? eq? equal? eqv? eval even? exact->inexact exact? exp expt #f floor force gcd imag-part inexact->exact inexact? input-port? integer->char integer? interaction-environment lcm length list list->string list->vector list-ref list-tail list? load log magnitude make-polar make-rectangular make-string make-vector max member memq memv min modulo negative? newline not null-environment null? number->string number? numerator odd? open-input-file open-output-file output-port? pair? peek-char port? positive? procedure? quasiquote quote quotient rational? rationalize read read-char real-part real? remainder reverse round scheme-report-environment set! set-car! set-cdr! sin sqrt string string->list string->number string->symbol string-append string-ci<=? string-ci<? string-ci=? string-ci>=? string-ci>? string-copy string-fill! string-length string-ref string-set! string<=? string<? string=? string>=? string>? string? substring symbol->string symbol? #t tan transcript-off transcript-on truncate values vector vector->list vector-fill! vector-length vector-ref vector-set! with-input-from-file with-output-to-file write write-char zero?");
16 var indentKeys = makeKeywords("define let letrec let* lambda");
17
18
19 function stateStack(indent, type, prev) { // represents a state stack object
20 this.indent = indent;
21 this.type = type;
22 this.prev = prev;
23 }
24
25 function pushStack(state, indent, type) {
26 state.indentStack = new stateStack(indent, type, state.indentStack);
27 }
28
29 function popStack(state) {
30 state.indentStack = state.indentStack.prev;
31 }
32
33 /**
34 * Scheme numbers are complicated unfortunately.
35 * Checks if we're looking at a number, which might be possibly a fraction.
36 * Also checks that it is not part of a longer identifier. Returns true/false accordingly.
37 */
38 function isNumber(ch, stream){
39 if(/[0-9]/.exec(ch) != null){
40 stream.eatWhile(/[0-9]/);
41 stream.eat(/\//);
42 stream.eatWhile(/[0-9]/);
43 if (stream.eol() || !(/[a-zA-Z\-\_\/]/.exec(stream.peek()))) return true;
44 stream.backUp(stream.current().length - 1); // undo all the eating
45 }
46 return false;
47 }
48
49 return {
50 startState: function () {
51 return {
52 indentStack: null,
53 indentation: 0,
54 mode: false,
55 sExprComment: false
56 };
57 },
58
59 token: function (stream, state) {
60 if (state.indentStack == null && stream.sol()) {
61 // update indentation, but only if indentStack is empty
62 state.indentation = stream.indentation();
63 }
64
65 // skip spaces
66 if (stream.eatSpace()) {
67 return null;
68 }
69 var returnType = null;
70
71 switch(state.mode){
72 case "string": // multi-line string parsing mode
73 var next, escaped = false;
74 while ((next = stream.next()) != null) {
75 if (next == "\"" && !escaped) {
76
77 state.mode = false;
78 break;
79 }
80 escaped = !escaped && next == "\\";
81 }
82 returnType = STRING; // continue on in scheme-string mode
83 break;
84 case "comment": // comment parsing mode
85 var next, maybeEnd = false;
86 while ((next = stream.next()) != null) {
87 if (next == "#" && maybeEnd) {
88
89 state.mode = false;
90 break;
91 }
92 maybeEnd = (next == "|");
93 }
94 returnType = COMMENT;
95 break;
96 case "s-expr-comment": // s-expr commenting mode
97 state.mode = false;
98 if(stream.peek() == "(" || stream.peek() == "["){
99 // actually start scheme s-expr commenting mode
100 state.sExprComment = 0;
101 }else{
102 // if not we just comment the entire of the next token
103 stream.eatWhile(/[^/s]/); // eat non spaces
104 returnType = COMMENT;
105 break;
106 }
107 default: // default parsing mode
108 var ch = stream.next();
109
110 if (ch == "\"") {
111 state.mode = "string";
112 returnType = STRING;
113
114 } else if (ch == "'") {
115 returnType = ATOM;
116 } else if (ch == '#') {
117 if (stream.eat("|")) { // Multi-line comment
118 state.mode = "comment"; // toggle to comment mode
119 returnType = COMMENT;
120 } else if (stream.eat(/[tf]/)) { // #t/#f (atom)
121 returnType = ATOM;
122 } else if (stream.eat(';')) { // S-Expr comment
123 state.mode = "s-expr-comment";
124 returnType = COMMENT;
125 }
126
127 } else if (ch == ";") { // comment
128 stream.skipToEnd(); // rest of the line is a comment
129 returnType = COMMENT;
130 } else if (ch == "-"){
131
132 if(!isNaN(parseInt(stream.peek()))){
133 stream.eatWhile(/[\/0-9]/);
134 returnType = NUMBER;
135 }else{
136 returnType = null;
137 }
138 } else if (isNumber(ch,stream)){
139 returnType = NUMBER;
140 } else if (ch == "(" || ch == "[") {
141 var keyWord = ''; var indentTemp = stream.column();
142 /**
143 Either
144 (indent-word ..
145 (non-indent-word ..
146 (;something else, bracket, etc.
147 */
148
149 while ((letter = stream.eat(/[^\s\(\[\;\)\]]/)) != null) {
150 keyWord += letter;
151 }