| (function () { | |
| function forEach(arr, f) { | |
| for (var i = 0, e = arr.length; i < e; ++i) f(arr[i]); | |
| } | |
| function arrayContains(arr, item) { | |
| if (!Array.prototype.indexOf) { | |
| var i = arr.length; | |
| while (i--) { | |
| if (arr[i] === item) { | |
| return true; | |
| } | |
| } | |
| return false; | |
| } | |
| return arr.indexOf(item) != -1; | |
| } | |
| CodeMirror.javascriptHint = function(editor) { | |
| // Find the token at the cursor | |
| var cur = editor.getCursor(), token = editor.getTokenAt(cur), tprop = token; | |
| // If it's not a 'word-style' token, ignore the token. | |
| if (!/^[\w$_]*$/.test(token.string)) { | |
| token = tprop = {start: cur.ch, end: cur.ch, string: "", state: token.state, | |
| className: token.string == "." ? "property" : null}; | |
| } | |
| // If it is a property, find out what it is a property of. | |
| while (tprop.className == "property") { | |
| tprop = editor.getTokenAt({line: cur.line, ch: tprop.start}); | |
| if (tprop.string != ".") return; | |
| tprop = editor.getTokenAt({line: cur.line, ch: tprop.start}); | |
| if (!context) var context = []; | |
| context.push(tprop); | |
| } | |
| return {list: getCompletions(token, context), | |
| from: {line: cur.line, ch: token.start}, | |
| to: {line: cur.line, ch: token.end}}; | |
| } | |
| var stringProps = ("charAt charCodeAt indexOf lastIndexOf substring substr slice trim trimLeft trimRight " + | |
| "toUpperCase toLowerCase split concat match replace search").split(" "); | |
| var arrayProps = ("length concat join splice push pop shift unshift slice reverse sort indexOf " + | |
| "lastIndexOf every some filter forEach map reduce reduceRight ").split(" "); | |
| var funcProps = "prototype apply call bind".split(" "); | |
| var keywords = ("break case catch continue debugger default delete do else false finally for function " + | |
| "if in instanceof new null return switch throw true try typeof var void while with").split(" "); | |
| function getCompletions(token, context) { | |
| var found = [], start = token.string; | |
| function maybeAdd(str) { | |
| if (str.indexOf(start) == 0 && !arrayContains(found, str)) found.push(str); | |
| } | |
| function gatherCompletions(obj) { | |
| if (typeof obj == "string") forEach(stringProps, maybeAdd); | |
| else if (obj instanceof Array) forEach(arrayProps, maybeAdd); | |
| else if (obj instanceof Function) forEach(funcProps, maybeAdd); | |
| for (var name in obj) maybeAdd(name); | |
| } | |
| if (context) { | |
| // If this is a property, see if it belongs to some object we can | |
| // find in the current environment. | |
| var obj = context.pop(), base; | |
| if (obj.className == "variable") | |
| base = window[obj.string]; | |
| else if (obj.className == "string") | |
| base = ""; | |
| else if (obj.className == "atom") | |
| base = 1; | |
| while (base != null && context.length) | |
| base = base[context.pop().string]; | |
| if (base != null) gatherCompletions(base); | |
| } | |
| else { | |
| // If not, just look in the window object and any local scope | |
| // (reading into JS mode internals to get at the local variables) | |
| for (var v = token.state.localVars; v; v = v.next) maybeAdd(v.name); | |
| gatherCompletions(window); | |
| forEach(keywords, maybeAdd); | |
| } | |
| return found; | |
| } | |
| })(); | |