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Commit | Line | Data |
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1 | /* Just enough of CodeMirror to run runMode under node.js */ | |
2 | ||
3 | function splitLines(string){ return string.split(/\r?\n|\r/); }; | |
4 | ||
5 | function StringStream(string) { | |
6 | this.pos = this.start = 0; | |
7 | this.string = string; | |
8 | } | |
9 | StringStream.prototype = { | |
10 | eol: function() {return this.pos >= this.string.length;}, | |
11 | sol: function() {return this.pos == 0;}, | |
12 | peek: function() {return this.string.charAt(this.pos) || null;}, | |
13 | next: function() { | |
14 | if (this.pos < this.string.length) | |
15 | return this.string.charAt(this.pos++); | |
16 | }, | |
17 | eat: function(match) { | |
18 | var ch = this.string.charAt(this.pos); | |
19 | if (typeof match == "string") var ok = ch == match; | |
20 | else var ok = ch && (match.test ? match.test(ch) : match(ch)); | |
21 | if (ok) {++this.pos; return ch;} | |
22 | }, | |
23 | eatWhile: function(match) { | |
24 | var start = this.pos; | |
25 | while (this.eat(match)){} | |
26 | return this.pos > start; | |
27 | }, | |
28 | eatSpace: function() { | |
29 | var start = this.pos; | |
30 | while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) ++this.pos; | |
31 | return this.pos > start; | |
32 | }, | |
33 | skipToEnd: function() {this.pos = this.string.length;}, | |
34 | skipTo: function(ch) { | |
35 | var found = this.string.indexOf(ch, this.pos); | |
36 | if (found > -1) {this.pos = found; return true;} | |
37 | }, | |
38 | backUp: function(n) {this.pos -= n;}, | |
39 | column: function() {return this.start;}, | |
40 | indentation: function() {return 0;}, | |
41 | match: function(pattern, consume, caseInsensitive) { | |
42 | if (typeof pattern == "string") { | |
43 | function cased(str) {return caseInsensitive ? str.toLowerCase() : str;} | |
44 | if (cased(this.string).indexOf(cased(pattern), this.pos) == this.pos) { | |
45 | if (consume !== false) this.pos += pattern.length; | |
46 | return true; | |
47 | } | |
48 | } | |
49 | else { | |
50 | var match = this.string.slice(this.pos).match(pattern); | |
51 | if (match && consume !== false) this.pos += match[0].length; | |
52 | return match; | |
53 | } | |
54 | }, | |
55 | current: function(){return this.string.slice(this.start, this.pos);} | |
56 | }; | |
57 | exports.StringStream = StringStream; | |
58 | ||
59 | exports.startState = function(mode, a1, a2) { | |
60 | return mode.startState ? mode.startState(a1, a2) : true; | |
61 | }; | |
62 | ||
63 | var modes = exports.modes = {}, mimeModes = exports.mimeModes = {}; | |
64 | exports.defineMode = function(name, mode) { modes[name] = mode; }; | |
65 | exports.defineMIME = function(mime, spec) { mimeModes[mime] = spec; }; | |
66 | exports.getMode = function(options, spec) { | |
67 | if (typeof spec == "string" && mimeModes.hasOwnProperty(spec)) | |
68 | spec = mimeModes[spec]; | |
69 | if (typeof spec == "string") | |
70 | var mname = spec, config = {}; | |
71 | else if (spec != null) | |
72 | var mname = spec.name, config = spec; | |
73 | var mfactory = modes[mname]; | |
74 | if (!mfactory) throw new Error("Unknown mode: " + spec); | |
75 | return mfactory(options, config || {}); | |
76 | }; | |
77 | ||
78 | exports.runMode = function(string, modespec, callback) { | |
79 | var mode = exports.getMode({indentUnit: 2}, modespec); | |
80 | var lines = splitLines(string), state = exports.startState(mode); | |
81 | for (var i = 0, e = lines.length; i < e; ++i) { | |
82 | if (i) callback("\n"); | |
83 | var stream = new exports.StringStream(lines[i]); | |
84 | while (!stream.eol()) { | |
85 | var style = mode.token(stream, state); | |
86 | callback(stream.current(), style, i, stream.start); | |
87 | stream.start = stream.pos; | |
88 | } | |
89 | } | |
90 | }; |