0
|
1 // CodeMirror, copyright (c) by Marijn Haverbeke and others
|
|
2 // Distributed under an MIT license: https://codemirror.net/5/LICENSE
|
|
3
|
|
4 /**
|
|
5 * Author: Koh Zi Han, based on implementation by Koh Zi Chun
|
|
6 * Improved by: Jakub T. Jankiewicz
|
|
7 */
|
|
8
|
|
9 (function(mod) {
|
|
10 if (typeof exports == "object" && typeof module == "object") // CommonJS
|
|
11 mod(require("../../lib/codemirror"));
|
|
12 else if (typeof define == "function" && define.amd) // AMD
|
|
13 define(["../../lib/codemirror"], mod);
|
|
14 else // Plain browser env
|
|
15 mod(CodeMirror);
|
|
16 })(function(CodeMirror) {
|
|
17 "use strict";
|
|
18
|
|
19 CodeMirror.defineMode("scheme", function () {
|
|
20 var BUILTIN = "builtin", COMMENT = "comment", STRING = "string",
|
|
21 SYMBOL = "symbol", ATOM = "atom", NUMBER = "number", BRACKET = "bracket";
|
|
22 var INDENT_WORD_SKIP = 2;
|
|
23
|
|
24 function makeKeywords(str) {
|
|
25 var obj = {}, words = str.split(" ");
|
|
26 for (var i = 0; i < words.length; ++i) obj[words[i]] = true;
|
|
27 return obj;
|
|
28 }
|
|
29
|
|
30 var keywords = makeKeywords("λ case-lambda call/cc class cond-expand define-class define-values 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 define-macro defmacro 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?");
|
|
31 var indentKeys = makeKeywords("define let letrec let* lambda define-macro defmacro let-syntax letrec-syntax let-values let*-values define-syntax syntax-rules define-values when unless");
|
|
32
|
|
33 function stateStack(indent, type, prev) { // represents a state stack object
|
|
34 this.indent = indent;
|
|
35 this.type = type;
|
|
36 this.prev = prev;
|
|
37 }
|
|
38
|
|
39 function pushStack(state, indent, type) {
|
|
40 state.indentStack = new stateStack(indent, type, state.indentStack);
|
|
41 }
|
|
42
|
|
43 function popStack(state) {
|
|
44 state.indentStack = state.indentStack.prev;
|
|
45 }
|
|
46
|
|
47 var binaryMatcher = new RegExp(/^(?:[-+]i|[-+][01]+#*(?:\/[01]+#*)?i|[-+]?[01]+#*(?:\/[01]+#*)?@[-+]?[01]+#*(?:\/[01]+#*)?|[-+]?[01]+#*(?:\/[01]+#*)?[-+](?:[01]+#*(?:\/[01]+#*)?)?i|[-+]?[01]+#*(?:\/[01]+#*)?)(?=[()\s;"]|$)/i);
|
|
48 var octalMatcher = new RegExp(/^(?:[-+]i|[-+][0-7]+#*(?:\/[0-7]+#*)?i|[-+]?[0-7]+#*(?:\/[0-7]+#*)?@[-+]?[0-7]+#*(?:\/[0-7]+#*)?|[-+]?[0-7]+#*(?:\/[0-7]+#*)?[-+](?:[0-7]+#*(?:\/[0-7]+#*)?)?i|[-+]?[0-7]+#*(?:\/[0-7]+#*)?)(?=[()\s;"]|$)/i);
|
|
49 var hexMatcher = new RegExp(/^(?:[-+]i|[-+][\da-f]+#*(?:\/[\da-f]+#*)?i|[-+]?[\da-f]+#*(?:\/[\da-f]+#*)?@[-+]?[\da-f]+#*(?:\/[\da-f]+#*)?|[-+]?[\da-f]+#*(?:\/[\da-f]+#*)?[-+](?:[\da-f]+#*(?:\/[\da-f]+#*)?)?i|[-+]?[\da-f]+#*(?:\/[\da-f]+#*)?)(?=[()\s;"]|$)/i);
|
|
50 var decimalMatcher = new RegExp(/^(?:[-+]i|[-+](?:(?:(?:\d+#+\.?#*|\d+\.\d*#*|\.\d+#*|\d+)(?:[esfdl][-+]?\d+)?)|\d+#*\/\d+#*)i|[-+]?(?:(?:(?:\d+#+\.?#*|\d+\.\d*#*|\.\d+#*|\d+)(?:[esfdl][-+]?\d+)?)|\d+#*\/\d+#*)@[-+]?(?:(?:(?:\d+#+\.?#*|\d+\.\d*#*|\.\d+#*|\d+)(?:[esfdl][-+]?\d+)?)|\d+#*\/\d+#*)|[-+]?(?:(?:(?:\d+#+\.?#*|\d+\.\d*#*|\.\d+#*|\d+)(?:[esfdl][-+]?\d+)?)|\d+#*\/\d+#*)[-+](?:(?:(?:\d+#+\.?#*|\d+\.\d*#*|\.\d+#*|\d+)(?:[esfdl][-+]?\d+)?)|\d+#*\/\d+#*)?i|(?:(?:(?:\d+#+\.?#*|\d+\.\d*#*|\.\d+#*|\d+)(?:[esfdl][-+]?\d+)?)|\d+#*\/\d+#*))(?=[()\s;"]|$)/i);
|
|
51
|
|
52 function isBinaryNumber (stream) {
|
|
53 return stream.match(binaryMatcher);
|
|
54 }
|
|
55
|
|
56 function isOctalNumber (stream) {
|
|
57 return stream.match(octalMatcher);
|
|
58 }
|
|
59
|
|
60 function isDecimalNumber (stream, backup) {
|
|
61 if (backup === true) {
|
|
62 stream.backUp(1);
|
|
63 }
|
|
64 return stream.match(decimalMatcher);
|
|
65 }
|
|
66
|
|
67 function isHexNumber (stream) {
|
|
68 return stream.match(hexMatcher);
|
|
69 }
|
|
70
|
|
71 function processEscapedSequence(stream, options) {
|
|
72 var next, escaped = false;
|
|
73 while ((next = stream.next()) != null) {
|
|
74 if (next == options.token && !escaped) {
|
|
75
|
|
76 options.state.mode = false;
|
|
77 break;
|
|
78 }
|
|
79 escaped = !escaped && next == "\\";
|
|
80 }
|
|
81 }
|
|
82
|
|
83 return {
|
|
84 startState: function () {
|
|
85 return {
|
|
86 indentStack: null,
|
|
87 indentation: 0,
|
|
88 mode: false,
|
|
89 sExprComment: false,
|
|
90 sExprQuote: false
|
|
91 };
|
|
92 },
|
|
93
|
|
94 token: function (stream, state) {
|
|
95 if (state.indentStack == null && stream.sol()) {
|
|
96 // update indentation, but only if indentStack is empty
|
|
97 state.indentation = stream.indentation();
|
|
98 }
|
|
99
|
|
100 // skip spaces
|
|
101 if (stream.eatSpace()) {
|
|
102 return null;
|
|
103 }
|
|
104 var returnType = null;
|
|
105
|
|
106 switch(state.mode){
|
|
107 case "string": // multi-line string parsing mode
|
|
108 processEscapedSequence(stream, {
|
|
109 token: "\"",
|
|
110 state: state
|
|
111 });
|
|
112 returnType = STRING; // continue on in scheme-string mode
|
|
113 break;
|
|
114 case "symbol": // escape symbol
|
|
115 processEscapedSequence(stream, {
|
|
116 token: "|",
|
|
117 state: state
|
|
118 });
|
|
119 returnType = SYMBOL; // continue on in scheme-symbol mode
|
|
120 break;
|
|
121 case "comment": // comment parsing mode
|
|
122 var next, maybeEnd = false;
|
|
123 while ((next = stream.next()) != null) {
|
|
124 if (next == "#" && maybeEnd) {
|
|
125
|
|
126 state.mode = false;
|
|
127 break;
|
|
128 }
|
|
129 maybeEnd = (next == "|");
|
|
130 }
|
|
131 returnType = COMMENT;
|
|
132 break;
|
|
133 case "s-expr-comment": // s-expr commenting mode
|
|
134 state.mode = false;
|
|
135 if(stream.peek() == "(" || stream.peek() == "["){
|
|
136 // actually start scheme s-expr commenting mode
|
|
137 state.sExprComment = 0;
|
|
138 }else{
|
|
139 // if not we just comment the entire of the next token
|
|
140 stream.eatWhile(/[^\s\(\)\[\]]/); // eat symbol atom
|
|
141 returnType = COMMENT;
|
|
142 break;
|
|
143 }
|
|
144 default: // default parsing mode
|
|
145 var ch = stream.next();
|
|
146
|
|
147 if (ch == "\"") {
|
|
148 state.mode = "string";
|
|
149 returnType = STRING;
|
|
150
|
|
151 } else if (ch == "'") {
|
|
152 if (stream.peek() == "(" || stream.peek() == "["){
|
|
153 if (typeof state.sExprQuote != "number") {
|
|
154 state.sExprQuote = 0;
|
|
155 } // else already in a quoted expression
|
|
156 returnType = ATOM;
|
|
157 } else {
|
|
158 stream.eatWhile(/[\w_\-!$%&*+\.\/:<=>?@\^~]/);
|
|
159 returnType = ATOM;
|
|
160 }
|
|
161 } else if (ch == '|') {
|
|
162 state.mode = "symbol";
|
|
163 returnType = SYMBOL;
|
|
164 } else if (ch == '#') {
|
|
165 if (stream.eat("|")) { // Multi-line comment
|
|
166 state.mode = "comment"; // toggle to comment mode
|
|
167 returnType = COMMENT;
|
|
168 } else if (stream.eat(/[tf]/i)) { // #t/#f (atom)
|
|
169 returnType = ATOM;
|
|
170 } else if (stream.eat(';')) { // S-Expr comment
|
|
171 state.mode = "s-expr-comment";
|
|
172 returnType = COMMENT;
|
|
173 } else {
|
|
174 var numTest = null, hasExactness = false, hasRadix = true;
|
|
175 if (stream.eat(/[ei]/i)) {
|
|
176 hasExactness = true;
|
|
177 } else {
|
|
178 stream.backUp(1); // must be radix specifier
|
|
179 }
|
|
180 if (stream.match(/^#b/i)) {
|
|
181 numTest = isBinaryNumber;
|
|
182 } else if (stream.match(/^#o/i)) {
|
|
183 numTest = isOctalNumber;
|
|
184 } else if (stream.match(/^#x/i)) {
|
|
185 numTest = isHexNumber;
|
|
186 } else if (stream.match(/^#d/i)) {
|
|
187 numTest = isDecimalNumber;
|
|
188 } else if (stream.match(/^[-+0-9.]/, false)) {
|
|
189 hasRadix = false;
|
|
190 numTest = isDecimalNumber;
|
|
191 // re-consume the initial # if all matches failed
|
|
192 } else if (!hasExactness) {
|
|
193 stream.eat('#');
|
|
194 }
|
|
195 if (numTest != null) {
|
|
196 if (hasRadix && !hasExactness) {
|
|
197 // consume optional exactness after radix
|
|
198 stream.match(/^#[ei]/i);
|
|
199 }
|
|
200 if (numTest(stream))
|
|
201 returnType = NUMBER;
|
|
202 }
|
|
203 }
|
|
204 } else if (/^[-+0-9.]/.test(ch) && isDecimalNumber(stream, true)) { // match non-prefixed number, must be decimal
|
|
205 returnType = NUMBER;
|
|
206 } else if (ch == ";") { // comment
|
|
207 stream.skipToEnd(); // rest of the line is a comment
|
|
208 returnType = COMMENT;
|
|
209 } else if (ch == "(" || ch == "[") {
|
|
210 var keyWord = ''; var indentTemp = stream.column(), letter;
|
|
211 /**
|
|
212 Either
|
|
213 (indent-word ..
|
|
214 (non-indent-word ..
|
|
215 (;something else, bracket, etc.
|
|
216 */
|
|
217
|
|
218 while ((letter = stream.eat(/[^\s\(\[\;\)\]]/)) != null) {
|
|
219 keyWord += letter;
|
|
220 }
|
|
221
|
|
222 if (keyWord.length > 0 && indentKeys.propertyIsEnumerable(keyWord)) { // indent-word
|
|
223
|
|
224 pushStack(state, indentTemp + INDENT_WORD_SKIP, ch);
|
|
225 } else { // non-indent word
|
|
226 // we continue eating the spaces
|
|
227 stream.eatSpace();
|
|
228 if (stream.eol() || stream.peek() == ";") {
|
|
229 // nothing significant after
|
|
230 // we restart indentation 1 space after
|
|
231 pushStack(state, indentTemp + 1, ch);
|
|
232 } else {
|
|
233 pushStack(state, indentTemp + stream.current().length, ch); // else we match
|
|
234 }
|
|
235 }
|
|
236 stream.backUp(stream.current().length - 1); // undo all the eating
|
|
237
|
|
238 if(typeof state.sExprComment == "number") state.sExprComment++;
|
|
239 if(typeof state.sExprQuote == "number") state.sExprQuote++;
|
|
240
|
|
241 returnType = BRACKET;
|
|
242 } else if (ch == ")" || ch == "]") {
|
|
243 returnType = BRACKET;
|
|
244 if (state.indentStack != null && state.indentStack.type == (ch == ")" ? "(" : "[")) {
|
|
245 popStack(state);
|
|
246
|
|
247 if(typeof state.sExprComment == "number"){
|
|
248 if(--state.sExprComment == 0){
|
|
249 returnType = COMMENT; // final closing bracket
|
|
250 state.sExprComment = false; // turn off s-expr commenting mode
|
|
251 }
|
|
252 }
|
|
253 if(typeof state.sExprQuote == "number"){
|
|
254 if(--state.sExprQuote == 0){
|
|
255 returnType = ATOM; // final closing bracket
|
|
256 state.sExprQuote = false; // turn off s-expr quote mode
|
|
257 }
|
|
258 }
|
|
259 }
|
|
260 } else {
|
|
261 stream.eatWhile(/[\w_\-!$%&*+\.\/:<=>?@\^~]/);
|
|
262
|
|
263 if (keywords && keywords.propertyIsEnumerable(stream.current())) {
|
|
264 returnType = BUILTIN;
|
|
265 } else returnType = "variable";
|
|
266 }
|
|
267 }
|
|
268 return (typeof state.sExprComment == "number") ? COMMENT : ((typeof state.sExprQuote == "number") ? ATOM : returnType);
|
|
269 },
|
|
270
|
|
271 indent: function (state) {
|
|
272 if (state.indentStack == null) return state.indentation;
|
|
273 return state.indentStack.indent;
|
|
274 },
|
|
275
|
|
276 fold: "brace-paren",
|
|
277 closeBrackets: {pairs: "()[]{}\"\""},
|
|
278 lineComment: ";;"
|
|
279 };
|
|
280 });
|
|
281
|
|
282 CodeMirror.defineMIME("text/x-scheme", "scheme");
|
|
283
|
|
284 });
|