blob: 2117e5af14e02a68d6df41195c1a0e836217080d [file] [log] [blame]
adminbae64d82013-08-01 10:50:15 -07001(function () {
2 function forEach(arr, f) {
3 for (var i = 0, e = arr.length; i < e; ++i) f(arr[i]);
4 }
5
6 function arrayContains(arr, item) {
7 if (!Array.prototype.indexOf) {
8 var i = arr.length;
9 while (i--) {
10 if (arr[i] === item) {
11 return true;
12 }
13 }
14 return false;
15 }
16 return arr.indexOf(item) != -1;
17 }
18
19 function scriptHint(editor, keywords, getToken) {
20 // Find the token at the cursor
21 var cur = editor.getCursor(), token = getToken(editor, cur), tprop = token;
22 // If it's not a 'word-style' token, ignore the token.
23 if (!/^[\w$_]*$/.test(token.string)) {
24 token = tprop = {start: cur.ch, end: cur.ch, string: "", state: token.state,
25 className: token.string == "." ? "property" : null};
26 }
27 // If it is a property, find out what it is a property of.
28 while (tprop.className == "property") {
29 tprop = getToken(editor, {line: cur.line, ch: tprop.start});
30 if (tprop.string != ".") return;
31 tprop = getToken(editor, {line: cur.line, ch: tprop.start});
32 if (tprop.string == ')') {
33 var level = 1;
34 do {
35 tprop = getToken(editor, {line: cur.line, ch: tprop.start});
36 switch (tprop.string) {
37 case ')': level++; break;
38 case '(': level--; break;
39 default: break;
40 }
41 } while (level > 0)
42 tprop = getToken(editor, {line: cur.line, ch: tprop.start});
43 if (tprop.className == 'variable')
44 tprop.className = 'function';
45 else return; // no clue
46 }
47 if (!context) var context = [];
48 context.push(tprop);
49 }
50 return {list: getCompletions(token, context, keywords),
51 from: {line: cur.line, ch: token.start},
52 to: {line: cur.line, ch: token.end}};
53 }
54
55 CodeMirror.javascriptHint = function(editor) {
56 return scriptHint(editor, javascriptKeywords,
57 function (e, cur) {return e.getTokenAt(cur);});
58 }
59
60 function getCoffeeScriptToken(editor, cur) {
61 // This getToken, it is for coffeescript, imitates the behavior of
62 // getTokenAt method in javascript.js, that is, returning "property"
63 // type and treat "." as indepenent token.
64 var token = editor.getTokenAt(cur);
65 if (cur.ch == token.start + 1 && token.string.charAt(0) == '.') {
66 token.end = token.start;
67 token.string = '.';
68 token.className = "property";
69 }
70 else if (/^\.[\w$_]*$/.test(token.string)) {
71 token.className = "property";
72 token.start++;
73 token.string = token.string.replace(/\./, '');
74 }
75 return token;
76 }
77
78 CodeMirror.coffeescriptHint = function(editor) {
79 return scriptHint(editor, coffeescriptKeywords, getCoffeeScriptToken);
80 }
81
82 var stringProps = ("charAt charCodeAt indexOf lastIndexOf substring substr slice trim trimLeft trimRight " +
83 "toUpperCase toLowerCase split concat match replace search").split(" ");
84 var arrayProps = ("length concat join splice push pop shift unshift slice reverse sort indexOf " +
85 "lastIndexOf every some filter forEach map reduce reduceRight ").split(" ");
86 var funcProps = "prototype apply call bind".split(" ");
87 var javascriptKeywords = ("break case catch continue debugger default delete do else false finally for function " +
88 "if in instanceof new null return switch throw true try typeof var void while with").split(" ");
89 var coffeescriptKeywords = ("and break catch class continue delete do else extends false finally for " +
90 "if in instanceof isnt new no not null of off on or return switch then throw true try typeof until void while with yes").split(" ");
91
92 function getCompletions(token, context, keywords) {
93 var found = [], start = token.string;
94 function maybeAdd(str) {
95 if (str.indexOf(start) == 0 && !arrayContains(found, str)) found.push(str);
96 }
97 function gatherCompletions(obj) {
98 if (typeof obj == "string") forEach(stringProps, maybeAdd);
99 else if (obj instanceof Array) forEach(arrayProps, maybeAdd);
100 else if (obj instanceof Function) forEach(funcProps, maybeAdd);
101 for (var name in obj) maybeAdd(name);
102 }
103
104 if (context) {
105 // If this is a property, see if it belongs to some object we can
106 // find in the current environment.
107 var obj = context.pop(), base;
108 if (obj.className == "variable")
109 base = window[obj.string];
110 else if (obj.className == "string")
111 base = "";
112 else if (obj.className == "atom")
113 base = 1;
114 else if (obj.className == "function") {
115 if (window.jQuery != null && (obj.string == '$' || obj.string == 'jQuery') &&
116 (typeof window.jQuery == 'function'))
117 base = window.jQuery();
118 else if (window._ != null && (obj.string == '_') && (typeof window._ == 'function'))
119 base = window._();
120 }
121 while (base != null && context.length)
122 base = base[context.pop().string];
123 if (base != null) gatherCompletions(base);
124 }
125 else {
126 // If not, just look in the window object and any local scope
127 // (reading into JS mode internals to get at the local variables)
128 for (var v = token.state.localVars; v; v = v.next) maybeAdd(v.name);
129 gatherCompletions(window);
130 forEach(keywords, maybeAdd);
131 }
132 return found;
133 }
134})();