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(function () { |
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function forEach(arr, f) { |
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for (var i = 0, e = arr.length; i < e; ++i) f(arr[i]); |
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} |
|
|
|
function arrayContains(arr, item) { |
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if (!Array.prototype.indexOf) { |
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var i = arr.length; |
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while (i--) { |
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if (arr[i] === item) { |
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return true; |
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} |
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} |
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return false; |
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} |
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return arr.indexOf(item) != -1; |
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} |
|
|
|
CodeMirror.javascriptHint = function(editor) { |
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// Find the token at the cursor |
|
var cur = editor.getCursor(), token = editor.getTokenAt(cur), tprop = token; |
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// If it's not a 'word-style' token, ignore the token. |
|
if (!/^[\w$_]*$/.test(token.string)) { |
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token = tprop = {start: cur.ch, end: cur.ch, string: "", state: token.state, |
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className: token.string == "." ? "property" : null}; |
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} |
|
// 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}); |
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if (tprop.string != ".") return; |
|
tprop = editor.getTokenAt({line: cur.line, ch: tprop.start}); |
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if (!context) var context = []; |
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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) { |
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var found = [], start = token.string; |
|
function maybeAdd(str) { |
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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; |
|
} |
|
})(); |
|
|