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authorPushkar Joshi2012-02-24 12:08:49 -0800
committerPushkar Joshi2012-02-24 12:08:49 -0800
commit03ca7a5ed13c25faaa9100bb666e062fd15335e6 (patch)
treec51112223ceb9121cd595a60335eb2795215590f /imports/codemirror/mode/scheme/scheme.js
parentfcb12cc09eb3cd3b42bd215877ba18f449275b75 (diff)
parent053fc63a2950c7a5ee4ebf98033b64d474a3c46e (diff)
downloadninja-03ca7a5ed13c25faaa9100bb666e062fd15335e6.tar.gz
Merge branch 'pentool' into brushtool
Conflicts: imports/codemirror/mode/scheme/scheme.js js/tools/BrushTool.js
Diffstat (limited to 'imports/codemirror/mode/scheme/scheme.js')
-rw-r--r--imports/codemirror/mode/scheme/scheme.js202
1 files changed, 202 insertions, 0 deletions
diff --git a/imports/codemirror/mode/scheme/scheme.js b/imports/codemirror/mode/scheme/scheme.js
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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 }
152
153 if (keyWord.length > 0 && indentKeys.propertyIsEnumerable(keyWord)) { // indent-word
154
155 pushStack(state, indentTemp + INDENT_WORD_SKIP, ch);
156 } else { // non-indent word
157 // we continue eating the spaces
158 stream.eatSpace();
159 if (stream.eol() || stream.peek() == ";") {
160 // nothing significant after
161 // we restart indentation 1 space after
162 pushStack(state, indentTemp + 1, ch);
163 } else {
164 pushStack(state, indentTemp + stream.current().length, ch); // else we match
165 }
166 }
167 stream.backUp(stream.current().length - 1); // undo all the eating
168
169 if(typeof state.sExprComment == "number") state.sExprComment++;
170
171 returnType = BRACKET;
172 } else if (ch == ")" || ch == "]") {
173 returnType = BRACKET;
174 if (state.indentStack != null && state.indentStack.type == (ch == ")" ? "(" : "[")) {
175 popStack(state);
176
177 if(typeof state.sExprComment == "number"){
178 if(--state.sExprComment == 0){
179 returnType = COMMENT; // final closing bracket
180 state.sExprComment = false; // turn off s-expr commenting mode
181 }
182 }
183 }
184 } else {
185 stream.eatWhile(/[\w\$_\-]/);
186
187 if (keywords && keywords.propertyIsEnumerable(stream.current())) {
188 returnType = BUILTIN;
189 }else returnType = null;
190 }
191 }
192 return (typeof state.sExprComment == "number") ? COMMENT : returnType;
193 },
194
195 indent: function (state, textAfter) {
196 if (state.indentStack == null) return state.indentation;
197 return state.indentStack.indent;
198 }
199 };
200});
201
202CodeMirror.defineMIME("text/x-scheme", "scheme"); \ No newline at end of file
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