(function (root, mod){ 
if (typeof exports == "object" && typeof module == "object") return mod(exports); 
if (typeof define == "function" && define.amd) return define(["exports"] , mod); 
mod(root.acorn || (root.acorn = { 
}
)); 
} 
)(this, function (exports){ 
"use strict"; 
exports.version = "0.4.1"; 
var options, input, inputLen, sourceFile; 
exports.parse = function (inpt, opts){ 
input = String(inpt); 
inputLen = _AN_Read_length("length", input); 
setOptions(opts); 
initTokenState(); 
return parseTopLevel(options.program); 
} 
; 
var defaultOptions = exports.defaultOptions = { 
ecmaVersion: 5,
strictSemicolons: false ,
allowTrailingCommas: true ,
forbidReserved: false ,
locations: false ,
onComment: null ,
ranges: false ,
program: null ,
sourceFile: null ,
directSourceFile: null }
; 
function setOptions(opts){ 
options = opts || { 
}
; 
for (var opt in defaultOptions)if (!Object.prototype.hasOwnProperty.call(options, opt)) options[opt] = defaultOptions[opt]; 
sourceFile = options.sourceFile || null ; 
} 
var getLineInfo = exports.getLineInfo = function (input, offset){ 
for (var line = 1, cur = 0; 
; ){ 
lineBreak.lastIndex = cur; 
var match = lineBreak.exec(input); 
if (match && match.index < offset) { 
++line; 
cur = match.index + _AN_Read_length("length", match[0]); 
} 
 else break ; 
} 
return { 
line: line,
column: offset - cur}
; 
} 
; 
exports.tokenize = function (inpt, opts){ 
input = String(inpt); 
inputLen = _AN_Read_length("length", input); 
setOptions(opts); 
initTokenState(); 
var t = { 
}
; 
function getToken(forceRegexp){ 
readToken(forceRegexp); 
t.start = tokStart; 
t.end = tokEnd; 
t.startLoc = tokStartLoc; 
t.endLoc = tokEndLoc; 
t.type = tokType; 
t.value = tokVal; 
return t; 
} 
getToken.jumpTo = function (pos, reAllowed){ 
tokPos = pos; 
if (options.locations) { 
tokCurLine = 1; 
tokLineStart = lineBreak.lastIndex = 0; 
var match; 
while ((match = lineBreak.exec(input)) && match.index < pos){ 
++tokCurLine; 
tokLineStart = match.index + _AN_Read_length("length", match[0]); 
} 
} 
tokRegexpAllowed = reAllowed; 
skipSpace(); 
} 
; 
return getToken; 
} 
; 
var tokPos; 
var tokStart, tokEnd; 
var tokStartLoc, tokEndLoc; 
var tokType, tokVal; 
var tokRegexpAllowed; 
var tokCurLine, tokLineStart; 
var lastStart, lastEnd, lastEndLoc; 
var inFunction, labels, strict; 
function raise(pos, message){ 
var loc = getLineInfo(input, pos); 
message += " (" + loc.line + ":" + loc.column + ")"; 
var err = new SyntaxError(message); 
err.pos = pos; 
err.loc = loc; 
err.raisedAt = tokPos; 
throw err
} 
var empty = [] ; 
var _num = { 
type: "num"}
, _regexp = { 
type: "regexp"}
, _string = { 
type: "string"}
; 
var _name = { 
type: "name"}
, _eof = { 
type: "eof"}
; 
var _break = { 
keyword: "break"}
, _case = { 
keyword: "case",
beforeExpr: true }
, _catch = { 
keyword: "catch"}
; 
var _continue = { 
keyword: "continue"}
, _debugger = { 
keyword: "debugger"}
, _default = { 
keyword: "default"}
; 
var _do = { 
keyword: "do",
isLoop: true }
, _else = { 
keyword: "else",
beforeExpr: true }
; 
var _finally = { 
keyword: "finally"}
, _for = { 
keyword: "for",
isLoop: true }
, _function = { 
keyword: "function"}
; 
var _if = { 
keyword: "if"}
, _return = { 
keyword: "return",
beforeExpr: true }
, _switch = { 
keyword: "switch"}
; 
var _throw = { 
keyword: "throw",
beforeExpr: true }
, _try = { 
keyword: "try"}
, _var = { 
keyword: "var"}
; 
var _while = { 
keyword: "while",
isLoop: true }
, _with = { 
keyword: "with"}
, _new = { 
keyword: "new",
beforeExpr: true }
; 
var _this = { 
keyword: "this"}
; 
var _null = { 
keyword: "null",
atomValue: null }
, _true = { 
keyword: "true",
atomValue: true }
; 
var _false = { 
keyword: "false",
atomValue: false }
; 
var _in = { 
keyword: "in",
binop: 7,
beforeExpr: true }
; 
var keywordTypes = { 
"break": _break,
"case": _case,
"catch": _catch,
"continue": _continue,
"debugger": _debugger,
"default": _default,
"do": _do,
"else": _else,
"finally": _finally,
"for": _for,
"function": _function,
"if": _if,
"return": _return,
"switch": _switch,
"throw": _throw,
"try": _try,
"var": _var,
"while": _while,
"with": _with,
"null": _null,
"true": _true,
"false": _false,
"new": _new,
"in": _in,
"instanceof": { 
keyword: "instanceof",
binop: 7,
beforeExpr: true }
,
"this": _this,
"typeof": { 
keyword: "typeof",
prefix: true ,
beforeExpr: true }
,
"void": { 
keyword: "void",
prefix: true ,
beforeExpr: true }
,
"delete": { 
keyword: "delete",
prefix: true ,
beforeExpr: true }
}
; 
var _bracketL = { 
type: "[",
beforeExpr: true }
, _bracketR = { 
type: "]"}
, _braceL = { 
type: "{",
beforeExpr: true }
; 
var _braceR = { 
type: "}"}
, _parenL = { 
type: "(",
beforeExpr: true }
, _parenR = { 
type: ")"}
; 
var _comma = { 
type: ",",
beforeExpr: true }
, _semi = { 
type: ";",
beforeExpr: true }
; 
var _colon = { 
type: ":",
beforeExpr: true }
, _dot = { 
type: "."}
, _question = { 
type: "?",
beforeExpr: true }
; 
var _slash = { 
binop: 10,
beforeExpr: true }
, _eq = { 
isAssign: true ,
beforeExpr: true }
; 
var _assign = { 
isAssign: true ,
beforeExpr: true }
; 
var _incDec = { 
postfix: true ,
prefix: true ,
isUpdate: true }
, _prefix = { 
prefix: true ,
beforeExpr: true }
; 
var _logicalOR = { 
binop: 1,
beforeExpr: true }
; 
var _logicalAND = { 
binop: 2,
beforeExpr: true }
; 
var _bitwiseOR = { 
binop: 3,
beforeExpr: true }
; 
var _bitwiseXOR = { 
binop: 4,
beforeExpr: true }
; 
var _bitwiseAND = { 
binop: 5,
beforeExpr: true }
; 
var _equality = { 
binop: 6,
beforeExpr: true }
; 
var _relational = { 
binop: 7,
beforeExpr: true }
; 
var _bitShift = { 
binop: 8,
beforeExpr: true }
; 
var _plusMin = { 
binop: 9,
prefix: true ,
beforeExpr: true }
; 
var _multiplyModulo = { 
binop: 10,
beforeExpr: true }
; 
exports.tokTypes = { 
bracketL: _bracketL,
bracketR: _bracketR,
braceL: _braceL,
braceR: _braceR,
parenL: _parenL,
parenR: _parenR,
comma: _comma,
semi: _semi,
colon: _colon,
dot: _dot,
question: _question,
slash: _slash,
eq: _eq,
name: _name,
eof: _eof,
num: _num,
regexp: _regexp,
string: _string}
; 
for (var kw in keywordTypes)exports.tokTypes["_" + kw] = keywordTypes[kw]; 
function makePredicate(words){ 
words = words.split(" "); 
var f = "", cats = [] ; 
out: for (var i = 0; 
i < _AN_Read_length("length", words); ++i){ 
for (var j = 0; 
j < _AN_Read_length("length", cats); ++j)if (_AN_Read_length("length", cats[j][0]) == _AN_Read_length("length", words[i])) { 
cats[j].push(words[i]); 
continue out; 
} 
cats.push([words[i]] ); 
} 
function compareTo(arr){ 
if (_AN_Read_length("length", arr) == 1) return f += "return str === " + JSON.stringify(arr[0]) + ";"; 
f += "switch(str){"; 
for (var i = 0; 
i < _AN_Read_length("length", arr); ++i)f += "case " + JSON.stringify(arr[i]) + ":"; 
f += "return true}return false;"; 
} 
if (_AN_Read_length("length", cats) > 3) { 
cats.sort(function (a, b){ 
return _AN_Read_length("length", b) - _AN_Read_length("length", a); 
} 
); 
f += "switch(str.length){"; 
for (var i = 0; 
i < _AN_Read_length("length", cats); ++i){ 
var cat = cats[i]; 
f += "case " + _AN_Read_length("length", cat[0]) + ":"; 
compareTo(cat); 
} 
f += "}"; 
} 
 else { 
compareTo(words); 
} 
return new Function("str", f); 
} 
var isReservedWord3 = makePredicate("abstract boolean byte char class double enum export extends final float goto implements import int interface long native package private protected public short static super synchronized throws transient volatile"); 
var isReservedWord5 = makePredicate("class enum extends super const export import"); 
var isStrictReservedWord = makePredicate("implements interface let package private protected public static yield"); 
var isStrictBadIdWord = makePredicate("eval arguments"); 
var isKeyword = makePredicate("break case catch continue debugger default do else finally for function if return switch throw try var while with null true false instanceof typeof void delete new in this"); 
var nonASCIIwhitespace = /[\u1680\u180e\u2000-\u200a\u202f\u205f\u3000\ufeff]/; 
var nonASCIIidentifierStartChars = "\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0370-\u0374\u0376\u0377\u037a-\u037d\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u048a-\u0527\u0531-\u0556\u0559\u0561-\u0587\u05d0-\u05ea\u05f0-\u05f2\u0620-\u064a\u066e\u066f\u0671-\u06d3\u06d5\u06e5\u06e6\u06ee\u06ef\u06fa-\u06fc\u06ff\u0710\u0712-\u072f\u074d-\u07a5\u07b1\u07ca-\u07ea\u07f4\u07f5\u07fa\u0800-\u0815\u081a\u0824\u0828\u0840-\u0858\u08a0\u08a2-\u08ac\u0904-\u0939\u093d\u0950\u0958-\u0961\u0971-\u0977\u0979-\u097f\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bd\u09ce\u09dc\u09dd\u09df-\u09e1\u09f0\u09f1\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a59-\u0a5c\u0a5e\u0a72-\u0a74\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abd\u0ad0\u0ae0\u0ae1\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3d\u0b5c\u0b5d\u0b5f-\u0b61\u0b71\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bd0\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c33\u0c35-\u0c39\u0c3d\u0c58\u0c59\u0c60\u0c61\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbd\u0cde\u0ce0\u0ce1\u0cf1\u0cf2\u0d05-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d\u0d4e\u0d60\u0d61\u0d7a-\u0d7f\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0e01-\u0e30\u0e32\u0e33\u0e40-\u0e46\u0e81\u0e82\u0e84\u0e87\u0e88\u0e8a\u0e8d\u0e94-\u0e97\u0e99-\u0e9f\u0ea1-\u0ea3\u0ea5\u0ea7\u0eaa\u0eab\u0ead-\u0eb0\u0eb2\u0eb3\u0ebd\u0ec0-\u0ec4\u0ec6\u0edc-\u0edf\u0f00\u0f40-\u0f47\u0f49-\u0f6c\u0f88-\u0f8c\u1000-\u102a\u103f\u1050-\u1055\u105a-\u105d\u1061\u1065\u1066\u106e-\u1070\u1075-\u1081\u108e\u10a0-\u10c5\u10c7\u10cd\u10d0-\u10fa\u10fc-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u1380-\u138f\u13a0-\u13f4\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f0\u1700-\u170c\u170e-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176c\u176e-\u1770\u1780-\u17b3\u17d7\u17dc\u1820-\u1877\u1880-\u18a8\u18aa\u18b0-\u18f5\u1900-\u191c\u1950-\u196d\u1970-\u1974\u1980-\u19ab\u19c1-\u19c7\u1a00-\u1a16\u1a20-\u1a54\u1aa7\u1b05-\u1b33\u1b45-\u1b4b\u1b83-\u1ba0\u1bae\u1baf\u1bba-\u1be5\u1c00-\u1c23\u1c4d-\u1c4f\u1c5a-\u1c7d\u1ce9-\u1cec\u1cee-\u1cf1\u1cf5\u1cf6\u1d00-\u1dbf\u1e00-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u2071\u207f\u2090-\u209c\u2102\u2107\u210a-\u2113\u2115\u2119-\u211d\u2124\u2126\u2128\u212a-\u212d\u212f-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2160-\u2188\u2c00-\u2c2e\u2c30-\u2c5e\u2c60-\u2ce4\u2ceb-\u2cee\u2cf2\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d80-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u2e2f\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303c\u3041-\u3096\u309d-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312d\u3131-\u318e\u31a0-\u31ba\u31f0-\u31ff\u3400-\u4db5\u4e00-\u9fcc\ua000-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua61f\ua62a\ua62b\ua640-\ua66e\ua67f-\ua697\ua6a0-\ua6ef\ua717-\ua71f\ua722-\ua788\ua78b-\ua78e\ua790-\ua793\ua7a0-\ua7aa\ua7f8-\ua801\ua803-\ua805\ua807-\ua80a\ua80c-\ua822\ua840-\ua873\ua882-\ua8b3\ua8f2-\ua8f7\ua8fb\ua90a-\ua925\ua930-\ua946\ua960-\ua97c\ua984-\ua9b2\ua9cf\uaa00-\uaa28\uaa40-\uaa42\uaa44-\uaa4b\uaa60-\uaa76\uaa7a\uaa80-\uaaaf\uaab1\uaab5\uaab6\uaab9-\uaabd\uaac0\uaac2\uaadb-\uaadd\uaae0-\uaaea\uaaf2-\uaaf4\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uabc0-\uabe2\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\uf900-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d\ufb1f-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe70-\ufe74\ufe76-\ufefc\uff21-\uff3a\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc"; 
var nonASCIIidentifierChars = "\u0300-\u036f\u0483-\u0487\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u0620-\u0649\u0672-\u06d3\u06e7-\u06e8\u06fb-\u06fc\u0730-\u074a\u0800-\u0814\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0840-\u0857\u08e4-\u08fe\u0900-\u0903\u093a-\u093c\u093e-\u094f\u0951-\u0957\u0962-\u0963\u0966-\u096f\u0981-\u0983\u09bc\u09be-\u09c4\u09c7\u09c8\u09d7\u09df-\u09e0\u0a01-\u0a03\u0a3c\u0a3e-\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a66-\u0a71\u0a75\u0a81-\u0a83\u0abc\u0abe-\u0ac5\u0ac7-\u0ac9\u0acb-\u0acd\u0ae2-\u0ae3\u0ae6-\u0aef\u0b01-\u0b03\u0b3c\u0b3e-\u0b44\u0b47\u0b48\u0b4b-\u0b4d\u0b56\u0b57\u0b5f-\u0b60\u0b66-\u0b6f\u0b82\u0bbe-\u0bc2\u0bc6-\u0bc8\u0bca-\u0bcd\u0bd7\u0be6-\u0bef\u0c01-\u0c03\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62-\u0c63\u0c66-\u0c6f\u0c82\u0c83\u0cbc\u0cbe-\u0cc4\u0cc6-\u0cc8\u0cca-\u0ccd\u0cd5\u0cd6\u0ce2-\u0ce3\u0ce6-\u0cef\u0d02\u0d03\u0d46-\u0d48\u0d57\u0d62-\u0d63\u0d66-\u0d6f\u0d82\u0d83\u0dca\u0dcf-\u0dd4\u0dd6\u0dd8-\u0ddf\u0df2\u0df3\u0e34-\u0e3a\u0e40-\u0e45\u0e50-\u0e59\u0eb4-\u0eb9\u0ec8-\u0ecd\u0ed0-\u0ed9\u0f18\u0f19\u0f20-\u0f29\u0f35\u0f37\u0f39\u0f41-\u0f47\u0f71-\u0f84\u0f86-\u0f87\u0f8d-\u0f97\u0f99-\u0fbc\u0fc6\u1000-\u1029\u1040-\u1049\u1067-\u106d\u1071-\u1074\u1082-\u108d\u108f-\u109d\u135d-\u135f\u170e-\u1710\u1720-\u1730\u1740-\u1750\u1772\u1773\u1780-\u17b2\u17dd\u17e0-\u17e9\u180b-\u180d\u1810-\u1819\u1920-\u192b\u1930-\u193b\u1951-\u196d\u19b0-\u19c0\u19c8-\u19c9\u19d0-\u19d9\u1a00-\u1a15\u1a20-\u1a53\u1a60-\u1a7c\u1a7f-\u1a89\u1a90-\u1a99\u1b46-\u1b4b\u1b50-\u1b59\u1b6b-\u1b73\u1bb0-\u1bb9\u1be6-\u1bf3\u1c00-\u1c22\u1c40-\u1c49\u1c5b-\u1c7d\u1cd0-\u1cd2\u1d00-\u1dbe\u1e01-\u1f15\u200c\u200d\u203f\u2040\u2054\u20d0-\u20dc\u20e1\u20e5-\u20f0\u2d81-\u2d96\u2de0-\u2dff\u3021-\u3028\u3099\u309a\ua640-\ua66d\ua674-\ua67d\ua69f\ua6f0-\ua6f1\ua7f8-\ua800\ua806\ua80b\ua823-\ua827\ua880-\ua881\ua8b4-\ua8c4\ua8d0-\ua8d9\ua8f3-\ua8f7\ua900-\ua909\ua926-\ua92d\ua930-\ua945\ua980-\ua983\ua9b3-\ua9c0\uaa00-\uaa27\uaa40-\uaa41\uaa4c-\uaa4d\uaa50-\uaa59\uaa7b\uaae0-\uaae9\uaaf2-\uaaf3\uabc0-\uabe1\uabec\uabed\uabf0-\uabf9\ufb20-\ufb28\ufe00-\ufe0f\ufe20-\ufe26\ufe33\ufe34\ufe4d-\ufe4f\uff10-\uff19\uff3f"; 
var nonASCIIidentifierStart = new RegExp("[" + nonASCIIidentifierStartChars + "]"); 
var nonASCIIidentifier = new RegExp("[" + nonASCIIidentifierStartChars + nonASCIIidentifierChars + "]"); 
var newline = /[\n\r\u2028\u2029]/; 
var lineBreak = /\r\n|[\n\r\u2028\u2029]/g; 
var isIdentifierStart = exports.isIdentifierStart = function (code){ 
if (code < 65) return code === 36; 
if (code < 91) return true ; 
if (code < 97) return code === 95; 
if (code < 123) return true ; 
return code >= 170 && nonASCIIidentifierStart.test(String.fromCharCode(code)); 
} 
; 
var isIdentifierChar = exports.isIdentifierChar = function (code){ 
if (code < 48) return code === 36; 
if (code < 58) return true ; 
if (code < 65) return false ; 
if (code < 91) return true ; 
if (code < 97) return code === 95; 
if (code < 123) return true ; 
return code >= 170 && nonASCIIidentifier.test(String.fromCharCode(code)); 
} 
; 
function line_loc_t(){ 
this.line = tokCurLine; 
this.column = tokPos - tokLineStart; 
} 
function initTokenState(){ 
tokCurLine = 1; 
tokPos = tokLineStart = 0; 
tokRegexpAllowed = true ; 
skipSpace(); 
} 
function finishToken(type, val){ 
tokEnd = tokPos; 
if (options.locations) tokEndLoc = new line_loc_t(); 
tokType = type; 
skipSpace(); 
tokVal = val; 
tokRegexpAllowed = type.beforeExpr; 
} 
function skipBlockComment(){ 
var startLoc = options.onComment && options.locations && new line_loc_t(); 
var start = tokPos, end = input.indexOf("*/", tokPos += 2); 
if (end === -1) raise(tokPos - 2, "Unterminated comment"); 
tokPos = end + 2; 
if (options.locations) { 
lineBreak.lastIndex = start; 
var match; 
while ((match = lineBreak.exec(input)) && match.index < tokPos){ 
++tokCurLine; 
tokLineStart = match.index + _AN_Read_length("length", match[0]); 
} 
} 
if (options.onComment) options.onComment(true , input.slice(start + 2, end), start, tokPos, startLoc, options.locations && new line_loc_t()); 
} 
function skipLineComment(){ 
var start = tokPos; 
var startLoc = options.onComment && options.locations && new line_loc_t(); 
var ch = input.charCodeAt(tokPos += 2); 
while (tokPos < inputLen && ch !== 10 && ch !== 13 && ch !== 8232 && ch !== 8233){ 
++tokPos; 
ch = input.charCodeAt(tokPos); 
} 
if (options.onComment) options.onComment(false , input.slice(start + 2, tokPos), start, tokPos, startLoc, options.locations && new line_loc_t()); 
} 
function skipSpace(){ 
while (tokPos < inputLen){ 
var ch = input.charCodeAt(tokPos); 
if (ch === 32) { 
++tokPos; 
} 
 else if (ch === 13) { 
++tokPos; 
var next = input.charCodeAt(tokPos); 
if (next === 10) { 
++tokPos; 
} 
if (options.locations) { 
++tokCurLine; 
tokLineStart = tokPos; 
} 
} 
 else if (ch === 10 || ch === 8232 || ch === 8233) { 
++tokPos; 
if (options.locations) { 
++tokCurLine; 
tokLineStart = tokPos; 
} 
} 
 else if (ch > 8 && ch < 14) { 
++tokPos; 
} 
 else if (ch === 47) { 
var next = input.charCodeAt(tokPos + 1); 
if (next === 42) { 
skipBlockComment(); 
} 
 else if (next === 47) { 
skipLineComment(); 
} 
 else break ; 
} 
 else if (ch === 160) { 
++tokPos; 
} 
 else if (ch >= 5760 && nonASCIIwhitespace.test(String.fromCharCode(ch))) { 
++tokPos; 
} 
 else { 
break ; 
} 
} 
} 
function readToken_dot(){ 
var next = input.charCodeAt(tokPos + 1); 
if (next >= 48 && next <= 57) return readNumber(true ); 
++tokPos; 
return finishToken(_dot); 
} 
function readToken_slash(){ 
var next = input.charCodeAt(tokPos + 1); 
if (tokRegexpAllowed) { 
++tokPos; 
return readRegexp(); 
} 
if (next === 61) return finishOp(_assign, 2); 
return finishOp(_slash, 1); 
} 
function readToken_mult_modulo(){ 
var next = input.charCodeAt(tokPos + 1); 
if (next === 61) return finishOp(_assign, 2); 
return finishOp(_multiplyModulo, 1); 
} 
function readToken_pipe_amp(code){ 
var next = input.charCodeAt(tokPos + 1); 
if (next === code) return finishOp(code === 124? _logicalOR: _logicalAND, 2); 
if (next === 61) return finishOp(_assign, 2); 
return finishOp(code === 124? _bitwiseOR: _bitwiseAND, 1); 
} 
function readToken_caret(){ 
var next = input.charCodeAt(tokPos + 1); 
if (next === 61) return finishOp(_assign, 2); 
return finishOp(_bitwiseXOR, 1); 
} 
function readToken_plus_min(code){ 
var next = input.charCodeAt(tokPos + 1); 
if (next === code) { 
if (next == 45 && input.charCodeAt(tokPos + 2) == 62 && newline.test(input.slice(lastEnd, tokPos))) { 
tokPos += 3; 
skipLineComment(); 
skipSpace(); 
return readToken(); 
} 
return finishOp(_incDec, 2); 
} 
if (next === 61) return finishOp(_assign, 2); 
return finishOp(_plusMin, 1); 
} 
function readToken_lt_gt(code){ 
var next = input.charCodeAt(tokPos + 1); 
var size = 1; 
if (next === code) { 
size = code === 62 && input.charCodeAt(tokPos + 2) === 62? 3: 2; 
if (input.charCodeAt(tokPos + size) === 61) return finishOp(_assign, size + 1); 
return finishOp(_bitShift, size); 
} 
if (next == 33 && code == 60 && input.charCodeAt(tokPos + 2) == 45 && input.charCodeAt(tokPos + 3) == 45) { 
tokPos += 4; 
skipLineComment(); 
skipSpace(); 
return readToken(); 
} 
if (next === 61) size = input.charCodeAt(tokPos + 2) === 61? 3: 2; 
return finishOp(_relational, size); 
} 
function readToken_eq_excl(code){ 
var next = input.charCodeAt(tokPos + 1); 
if (next === 61) return finishOp(_equality, input.charCodeAt(tokPos + 2) === 61? 3: 2); 
return finishOp(code === 61? _eq: _prefix, 1); 
} 
function getTokenFromCode(code){ 
switch (code){ 
case 46: return readToken_dot(); 
case 40: ++tokPos; 
return finishToken(_parenL); 
case 41: ++tokPos; 
return finishToken(_parenR); 
case 59: ++tokPos; 
return finishToken(_semi); 
case 44: ++tokPos; 
return finishToken(_comma); 
case 91: ++tokPos; 
return finishToken(_bracketL); 
case 93: ++tokPos; 
return finishToken(_bracketR); 
case 123: ++tokPos; 
return finishToken(_braceL); 
case 125: ++tokPos; 
return finishToken(_braceR); 
case 58: ++tokPos; 
return finishToken(_colon); 
case 63: ++tokPos; 
return finishToken(_question); 
case 48: var next = input.charCodeAt(tokPos + 1); 
if (next === 120 || next === 88) return readHexNumber(); 
case 49: case 50: case 51: case 52: case 53: case 54: case 55: case 56: case 57: return readNumber(false ); 
case 34: case 39: return readString(code); 
case 47: return readToken_slash(code); 
case 37: case 42: return readToken_mult_modulo(); 
case 124: case 38: return readToken_pipe_amp(code); 
case 94: return readToken_caret(); 
case 43: case 45: return readToken_plus_min(code); 
case 60: case 62: return readToken_lt_gt(code); 
case 61: case 33: return readToken_eq_excl(code); 
case 126: return finishOp(_prefix, 1); 
} 
return false ; 
} 
function readToken(forceRegexp){ 
if (!forceRegexp) tokStart = tokPos; 
 else tokPos = tokStart + 1; 
if (options.locations) tokStartLoc = new line_loc_t(); 
if (forceRegexp) return readRegexp(); 
if (tokPos >= inputLen) return finishToken(_eof); 
var code = input.charCodeAt(tokPos); 
if (isIdentifierStart(code) || code === 92) return readWord(); 
var tok = getTokenFromCode(code); 
if (tok === false ) { 
var ch = String.fromCharCode(code); 
if (ch === "\\" || nonASCIIidentifierStart.test(ch)) return readWord(); 
raise(tokPos, "Unexpected character '" + ch + "'"); 
} 
return tok; 
} 
function finishOp(type, size){ 
var str = input.slice(tokPos, tokPos + size); 
tokPos += size; 
finishToken(type, str); 
} 
function readRegexp(){ 
var content = "", escaped, inClass, start = tokPos; 
for (; ; ){ 
if (tokPos >= inputLen) raise(start, "Unterminated regular expression"); 
var ch = input.charAt(tokPos); 
if (newline.test(ch)) raise(start, "Unterminated regular expression"); 
if (!escaped) { 
if (ch === "[") inClass = true ; 
 else if (ch === "]" && inClass) inClass = false ; 
 else if (ch === "/" && !inClass) break ; 
escaped = ch === "\\"; 
} 
 else escaped = false ; 
++tokPos; 
} 
var content = input.slice(start, tokPos); 
++tokPos; 
var mods = readWord1(); 
if (mods && !/^[gmsiy]*$/.test(mods)) raise(start, "Invalid regexp flag"); 
try { 
var value = new RegExp(content, mods); 
} 
catch (e) { 
if (e instanceof SyntaxError) raise(start, e.message); 
raise(e); 
} 
return finishToken(_regexp, value); 
} 
function readInt(radix, len){ 
var start = tokPos, total = 0; 
for (var i = 0, e = len == null ? Infinity: len; 
i < e; ++i){ 
var code = input.charCodeAt(tokPos), val; 
if (code >= 97) val = code - 97 + 10; 
 else if (code >= 65) val = code - 65 + 10; 
 else if (code >= 48 && code <= 57) val = code - 48; 
 else val = Infinity; 
if (val >= radix) break ; 
++tokPos; 
total = total * radix + val; 
} 
if (tokPos === start || len != null  && tokPos - start !== len) return null ; 
return total; 
} 
function readHexNumber(){ 
tokPos += 2; 
var val = readInt(16); 
if (val == null ) raise(tokStart + 2, "Expected hexadecimal number"); 
if (isIdentifierStart(input.charCodeAt(tokPos))) raise(tokPos, "Identifier directly after number"); 
return finishToken(_num, val); 
} 
function readNumber(startsWithDot){ 
var start = tokPos, isFloat = false , octal = input.charCodeAt(tokPos) === 48; 
if (!startsWithDot && readInt(10) === null ) raise(start, "Invalid number"); 
if (input.charCodeAt(tokPos) === 46) { 
++tokPos; 
readInt(10); 
isFloat = true ; 
} 
var next = input.charCodeAt(tokPos); 
if (next === 69 || next === 101) { 
next = input.charCodeAt(++tokPos); 
if (next === 43 || next === 45) ++tokPos; 
if (readInt(10) === null ) raise(start, "Invalid number"); 
isFloat = true ; 
} 
if (isIdentifierStart(input.charCodeAt(tokPos))) raise(tokPos, "Identifier directly after number"); 
var str = input.slice(start, tokPos), val; 
if (isFloat) val = parseFloat(str); 
 else if (!octal || _AN_Read_length("length", str) === 1) val = parseInt(str, 10); 
 else if (/[89]/.test(str) || strict) raise(start, "Invalid number"); 
 else val = parseInt(str, 8); 
return finishToken(_num, val); 
} 
function readString(quote){ 
tokPos++ ; 
var out = ""; 
for (; ; ){ 
if (tokPos >= inputLen) raise(tokStart, "Unterminated string constant"); 
var ch = input.charCodeAt(tokPos); 
if (ch === quote) { 
++tokPos; 
return finishToken(_string, out); 
} 
if (ch === 92) { 
ch = input.charCodeAt(++tokPos); 
var octal = /^[0-7]+/.exec(input.slice(tokPos, tokPos + 3)); 
if (octal) octal = octal[0]; 
while (octal && parseInt(octal, 8) > 255)octal = octal.slice(0, -1); 
if (octal === "0") octal = null ; 
++tokPos; 
if (octal) { 
if (strict) raise(tokPos - 2, "Octal literal in strict mode"); 
out += String.fromCharCode(parseInt(octal, 8)); 
tokPos += _AN_Read_length("length", octal) - 1; 
} 
 else { 
switch (ch){ 
case 110: out += "\n"; 
break ; 
case 114: out += "\r"; 
break ; 
case 120: out += String.fromCharCode(readHexChar(2)); 
break ; 
case 117: out += String.fromCharCode(readHexChar(4)); 
break ; 
case 85: out += String.fromCharCode(readHexChar(8)); 
break ; 
case 116: out += "\t"; 
break ; 
case 98: out += "\b"; 
break ; 
case 118: out += "\u000b"; 
break ; 
case 102: out += "\f"; 
break ; 
case 48: out += "\0"; 
break ; 
case 13: if (input.charCodeAt(tokPos) === 10) ++tokPos; 
case 10: if (options.locations) { 
tokLineStart = tokPos; 
++tokCurLine; 
} 
break ; 
default : { 
out += String.fromCharCode(ch); 
break ; 
} 
} 
} 
} 
 else { 
if (ch === 13 || ch === 10 || ch === 8232 || ch === 8233) raise(tokStart, "Unterminated string constant"); 
out += String.fromCharCode(ch); 
++tokPos; 
} 
} 
} 
function readHexChar(len){ 
var n = readInt(16, len); 
if (n === null ) raise(tokStart, "Bad character escape sequence"); 
return n; 
} 
var containsEsc; 
function readWord1(){ 
containsEsc = false ; 
var word, first = true , start = tokPos; 
for (; ; ){ 
var ch = input.charCodeAt(tokPos); 
if (isIdentifierChar(ch)) { 
if (containsEsc) word += input.charAt(tokPos); 
++tokPos; 
} 
 else if (ch === 92) { 
if (!containsEsc) word = input.slice(start, tokPos); 
containsEsc = true ; 
if (input.charCodeAt(++tokPos) != 117) raise(tokPos, "Expecting Unicode escape sequence \\uXXXX"); 
++tokPos; 
var esc = readHexChar(4); 
var escStr = String.fromCharCode(esc); 
if (!escStr) raise(tokPos - 1, "Invalid Unicode escape"); 
if (!(first? isIdentifierStart(esc): isIdentifierChar(esc))) raise(tokPos - 4, "Invalid Unicode escape"); 
word += escStr; 
} 
 else { 
break ; 
} 
first = false ; 
} 
return containsEsc? word: input.slice(start, tokPos); 
} 
function readWord(){ 
var word = readWord1(); 
var type = _name; 
if (!containsEsc) { 
if (isKeyword(word)) type = keywordTypes[word]; 
 else if (options.forbidReserved && (options.ecmaVersion === 3? isReservedWord3: isReservedWord5)(word) || strict && isStrictReservedWord(word)) raise(tokStart, "The keyword '" + word + "' is reserved"); 
} 
return finishToken(type, word); 
} 
function next(){ 
lastStart = tokStart; 
lastEnd = tokEnd; 
lastEndLoc = tokEndLoc; 
readToken(); 
} 
function setStrict(strct){ 
strict = strct; 
tokPos = tokStart; 
if (options.locations) { 
while (tokPos < tokLineStart){ 
tokLineStart = input.lastIndexOf("\n", tokLineStart - 2) + 1; 
--tokCurLine; 
} 
} 
skipSpace(); 
readToken(); 
} 
function node_t(){ 
this.type = null ; 
this.start = tokStart; 
this.end = null ; 
} 
function node_loc_t(){ 
this.start = tokStartLoc; 
this.end = null ; 
if (sourceFile !== null ) this.source = sourceFile; 
} 
function startNode(){ 
var node = new node_t(); 
if (options.locations) node.loc = new node_loc_t(); 
if (options.directSourceFile) node.sourceFile = options.directSourceFile; 
if (options.ranges) node.range = [tokStart, 0] ; 
return node; 
} 
function startNodeFrom(other){ 
var node = new node_t(); 
node.start = other.start; 
if (options.locations) { 
node.loc = new node_loc_t(); 
node.loc.start = other.loc.start; 
} 
if (options.ranges) node.range = [other.range[0], 0] ; 
return node; 
} 
function finishNode(node, type){ 
node.type = type; 
node.end = lastEnd; 
if (options.locations) node.loc.end = lastEndLoc; 
if (options.ranges) node.range[1] = lastEnd; 
return node; 
} 
function isUseStrict(stmt){ 
return options.ecmaVersion >= 5 && stmt.type === "ExpressionStatement" && stmt.expression.type === "Literal" && stmt.expression.value === "use strict"; 
} 
function eat(type){ 
if (tokType === type) { 
next(); 
return true ; 
} 
} 
function canInsertSemicolon(){ 
return !options.strictSemicolons && (tokType === _eof || tokType === _braceR || newline.test(input.slice(lastEnd, tokStart))); 
} 
function semicolon(){ 
if (!eat(_semi) && !canInsertSemicolon()) unexpected(); 
} 
function expect(type){ 
if (tokType === type) next(); 
 else unexpected(); 
} 
function unexpected(){ 
raise(tokStart, "Unexpected token"); 
} 
function checkLVal(expr){ 
if (expr.type !== "Identifier" && expr.type !== "MemberExpression") raise(expr.start, "Assigning to rvalue"); 
if (strict && expr.type === "Identifier" && isStrictBadIdWord(expr.name)) raise(expr.start, "Assigning to " + expr.name + " in strict mode"); 
} 
function parseTopLevel(program){ 
lastStart = lastEnd = tokPos; 
if (options.locations) lastEndLoc = new line_loc_t(); 
inFunction = strict = null ; 
labels = [] ; 
readToken(); 
var node = program || startNode(), first = true ; 
if (!program) node.body = [] ; 
while (tokType !== _eof){ 
var stmt = parseStatement(); 
node.body.push(stmt); 
if (first && isUseStrict(stmt)) setStrict(true ); 
first = false ; 
} 
return finishNode(node, "Program"); 
} 
var loopLabel = { 
kind: "loop"}
, switchLabel = { 
kind: "switch"}
; 
function parseStatement(){ 
if (tokType === _slash || tokType === _assign && tokVal == "/=") readToken(true ); 
var starttype = tokType, node = startNode(); 
switch (starttype){ 
case _break: case _continue: next(); 
var isBreak = starttype === _break; 
if (eat(_semi) || canInsertSemicolon()) node.label = null ; 
 else if (tokType !== _name) unexpected(); 
 else { 
node.label = parseIdent(); 
semicolon(); 
} 
for (var i = 0; 
i < _AN_Read_length("length", labels); ++i){ 
var lab = labels[i]; 
if (node.label == null  || lab.name === node.label.name) { 
if (lab.kind != null  && (isBreak || lab.kind === "loop")) break ; 
if (node.label && isBreak) break ; 
} 
} 
if (i === _AN_Read_length("length", labels)) raise(node.start, "Unsyntactic " + starttype.keyword); 
return finishNode(node, isBreak? "BreakStatement": "ContinueStatement"); 
case _debugger: next(); 
semicolon(); 
return finishNode(node, "DebuggerStatement"); 
case _do: next(); 
labels.push(loopLabel); 
node.body = parseStatement(); 
labels.pop(); 
expect(_while); 
node.test = parseParenExpression(); 
semicolon(); 
return finishNode(node, "DoWhileStatement"); 
case _for: next(); 
labels.push(loopLabel); 
expect(_parenL); 
if (tokType === _semi) return parseFor(node, null ); 
if (tokType === _var) { 
var init = startNode(); 
next(); 
parseVar(init, true ); 
finishNode(init, "VariableDeclaration"); 
if (_AN_Read_length("length", init.declarations) === 1 && eat(_in)) return parseForIn(node, init); 
return parseFor(node, init); 
} 
var init = parseExpression(false , true ); 
if (eat(_in)) { 
checkLVal(init); 
return parseForIn(node, init); 
} 
return parseFor(node, init); 
case _function: next(); 
return parseFunction(node, true ); 
case _if: next(); 
node.test = parseParenExpression(); 
node.consequent = parseStatement(); 
node.alternate = eat(_else)? parseStatement(): null ; 
return finishNode(node, "IfStatement"); 
case _return: if (!inFunction) raise(tokStart, "'return' outside of function"); 
next(); 
if (eat(_semi) || canInsertSemicolon()) node.argument = null ; 
 else { 
node.argument = parseExpression(); 
semicolon(); 
} 
return finishNode(node, "ReturnStatement"); 
case _switch: next(); 
node.discriminant = parseParenExpression(); 
node.cases = [] ; 
expect(_braceL); 
labels.push(switchLabel); 
for (var cur, sawDefault; 
tokType != _braceR; ){ 
if (tokType === _case || tokType === _default) { 
var isCase = tokType === _case; 
if (cur) finishNode(cur, "SwitchCase"); 
node.cases.push(cur = startNode()); 
cur.consequent = [] ; 
next(); 
if (isCase) cur.test = parseExpression(); 
 else { 
if (sawDefault) raise(lastStart, "Multiple default clauses"); 
sawDefault = true ; 
cur.test = null ; 
} 
expect(_colon); 
} 
 else { 
if (!cur) unexpected(); 
cur.consequent.push(parseStatement()); 
} 
} 
if (cur) finishNode(cur, "SwitchCase"); 
next(); 
labels.pop(); 
return finishNode(node, "SwitchStatement"); 
case _throw: next(); 
if (newline.test(input.slice(lastEnd, tokStart))) raise(lastEnd, "Illegal newline after throw"); 
node.argument = parseExpression(); 
semicolon(); 
return finishNode(node, "ThrowStatement"); 
case _try: next(); 
node.block = parseBlock(); 
node.handler = null ; 
if (tokType === _catch) { 
var clause = startNode(); 
next(); 
expect(_parenL); 
clause.param = parseIdent(); 
if (strict && isStrictBadIdWord(clause.param.name)) raise(clause.param.start, "Binding " + clause.param.name + " in strict mode"); 
expect(_parenR); 
clause.guard = null ; 
clause.body = parseBlock(); 
node.handler = finishNode(clause, "CatchClause"); 
} 
node.guardedHandlers = empty; 
node.finalizer = eat(_finally)? parseBlock(): null ; 
if (!node.handler && !node.finalizer) raise(node.start, "Missing catch or finally clause"); 
return finishNode(node, "TryStatement"); 
case _var: next(); 
parseVar(node); 
semicolon(); 
return finishNode(node, "VariableDeclaration"); 
case _while: next(); 
node.test = parseParenExpression(); 
labels.push(loopLabel); 
node.body = parseStatement(); 
labels.pop(); 
return finishNode(node, "WhileStatement"); 
case _with: if (strict) raise(tokStart, "'with' in strict mode"); 
next(); 
node.object = parseParenExpression(); 
node.body = parseStatement(); 
return finishNode(node, "WithStatement"); 
case _braceL: return parseBlock(); 
case _semi: next(); 
return finishNode(node, "EmptyStatement"); 
default : { 
var maybeName = tokVal, expr = parseExpression(); 
if (starttype === _name && expr.type === "Identifier" && eat(_colon)) { 
for (var i = 0; 
i < _AN_Read_length("length", labels); ++i)if (labels[i].name === maybeName) raise(expr.start, "Label '" + maybeName + "' is already declared"); 
var kind = tokType.isLoop? "loop": tokType === _switch? "switch": null ; 
labels.push({ 
name: maybeName,
kind: kind}
); 
node.body = parseStatement(); 
labels.pop(); 
node.label = expr; 
return finishNode(node, "LabeledStatement"); 
} 
 else { 
node.expression = expr; 
semicolon(); 
return finishNode(node, "ExpressionStatement"); 
} 
} 
} 
} 
function parseParenExpression(){ 
expect(_parenL); 
var val = parseExpression(); 
expect(_parenR); 
return val; 
} 
function parseBlock(allowStrict){ 
var node = startNode(), first = true , strict = false , oldStrict; 
node.body = [] ; 
expect(_braceL); 
while (!eat(_braceR)){ 
var stmt = parseStatement(); 
node.body.push(stmt); 
if (first && allowStrict && isUseStrict(stmt)) { 
oldStrict = strict; 
setStrict(strict = true ); 
} 
first = false ; 
} 
if (strict && !oldStrict) setStrict(false ); 
return finishNode(node, "BlockStatement"); 
} 
function parseFor(node, init){ 
node.init = init; 
expect(_semi); 
node.test = tokType === _semi? null : parseExpression(); 
expect(_semi); 
node.update = tokType === _parenR? null : parseExpression(); 
expect(_parenR); 
node.body = parseStatement(); 
labels.pop(); 
return finishNode(node, "ForStatement"); 
} 
function parseForIn(node, init){ 
node.left = init; 
node.right = parseExpression(); 
expect(_parenR); 
node.body = parseStatement(); 
labels.pop(); 
return finishNode(node, "ForInStatement"); 
} 
function parseVar(node, noIn){ 
node.declarations = [] ; 
node.kind = "var"; 
for (; ; ){ 
var decl = startNode(); 
decl.id = parseIdent(); 
if (strict && isStrictBadIdWord(decl.id.name)) raise(decl.id.start, "Binding " + decl.id.name + " in strict mode"); 
decl.init = eat(_eq)? parseExpression(true , noIn): null ; 
node.declarations.push(finishNode(decl, "VariableDeclarator")); 
if (!eat(_comma)) break ; 
} 
return node; 
} 
function parseExpression(noComma, noIn){ 
var expr = parseMaybeAssign(noIn); 
if (!noComma && tokType === _comma) { 
var node = startNodeFrom(expr); 
node.expressions = [expr] ; 
while (eat(_comma))node.expressions.push(parseMaybeAssign(noIn)); 
return finishNode(node, "SequenceExpression"); 
} 
return expr; 
} 
function parseMaybeAssign(noIn){ 
var left = parseMaybeConditional(noIn); 
if (tokType.isAssign) { 
var node = startNodeFrom(left); 
node.operator = tokVal; 
node.left = left; 
next(); 
node.right = parseMaybeAssign(noIn); 
checkLVal(left); 
return finishNode(node, "AssignmentExpression"); 
} 
return left; 
} 
function parseMaybeConditional(noIn){ 
var expr = parseExprOps(noIn); 
if (eat(_question)) { 
var node = startNodeFrom(expr); 
node.test = expr; 
node.consequent = parseExpression(true ); 
expect(_colon); 
node.alternate = parseExpression(true , noIn); 
return finishNode(node, "ConditionalExpression"); 
} 
return expr; 
} 
function parseExprOps(noIn){ 
return parseExprOp(parseMaybeUnary(), -1, noIn); 
} 
function parseExprOp(left, minPrec, noIn){ 
var prec = tokType.binop; 
if (prec != null  && (!noIn || tokType !== _in)) { 
if (prec > minPrec) { 
var node = startNodeFrom(left); 
node.left = left; 
node.operator = tokVal; 
var op = tokType; 
next(); 
node.right = parseExprOp(parseMaybeUnary(), prec, noIn); 
var exprNode = finishNode(node, (op === _logicalOR || op === _logicalAND)? "LogicalExpression": "BinaryExpression"); 
return parseExprOp(exprNode, minPrec, noIn); 
} 
} 
return left; 
} 
function parseMaybeUnary(){ 
if (tokType.prefix) { 
var node = startNode(), update = tokType.isUpdate; 
node.operator = tokVal; 
node.prefix = true ; 
tokRegexpAllowed = true ; 
next(); 
node.argument = parseMaybeUnary(); 
if (update) checkLVal(node.argument); 
 else if (strict && node.operator === "delete" && node.argument.type === "Identifier") raise(node.start, "Deleting local variable in strict mode"); 
return finishNode(node, update? "UpdateExpression": "UnaryExpression"); 
} 
var expr = parseExprSubscripts(); 
while (tokType.postfix && !canInsertSemicolon()){ 
var node = startNodeFrom(expr); 
node.operator = tokVal; 
node.prefix = false ; 
node.argument = expr; 
checkLVal(expr); 
next(); 
expr = finishNode(node, "UpdateExpression"); 
} 
return expr; 
} 
function parseExprSubscripts(){ 
return parseSubscripts(parseExprAtom()); 
} 
function parseSubscripts(base, noCalls){ 
if (eat(_dot)) { 
var node = startNodeFrom(base); 
node.object = base; 
node.property = parseIdent(true ); 
node.computed = false ; 
return parseSubscripts(finishNode(node, "MemberExpression"), noCalls); 
} 
 else if (eat(_bracketL)) { 
var node = startNodeFrom(base); 
node.object = base; 
node.property = parseExpression(); 
node.computed = true ; 
expect(_bracketR); 
return parseSubscripts(finishNode(node, "MemberExpression"), noCalls); 
} 
 else if (!noCalls && eat(_parenL)) { 
var node = startNodeFrom(base); 
node.callee = base; 
node.arguments = parseExprList(_parenR, false ); 
return parseSubscripts(finishNode(node, "CallExpression"), noCalls); 
} 
 else return base; 
} 
function parseExprAtom(){ 
switch (tokType){ 
case _this: var node = startNode(); 
next(); 
return finishNode(node, "ThisExpression"); 
case _name: return parseIdent(); 
case _num: case _string: case _regexp: var node = startNode(); 
node.value = tokVal; 
node.raw = input.slice(tokStart, tokEnd); 
next(); 
return finishNode(node, "Literal"); 
case _null: case _true: case _false: var node = startNode(); 
node.value = tokType.atomValue; 
node.raw = tokType.keyword; 
next(); 
return finishNode(node, "Literal"); 
case _parenL: var tokStartLoc1 = tokStartLoc, tokStart1 = tokStart; 
next(); 
var val = parseExpression(); 
val.start = tokStart1; 
val.end = tokEnd; 
if (options.locations) { 
val.loc.start = tokStartLoc1; 
val.loc.end = tokEndLoc; 
} 
if (options.ranges) val.range = [tokStart1, tokEnd] ; 
expect(_parenR); 
return val; 
case _bracketL: var node = startNode(); 
next(); 
node.elements = parseExprList(_bracketR, true , true ); 
return finishNode(node, "ArrayExpression"); 
case _braceL: return parseObj(); 
case _function: var node = startNode(); 
next(); 
return parseFunction(node, false ); 
case _new: return parseNew(); 
default : { 
unexpected(); 
} 
} 
} 
function parseNew(){ 
var node = startNode(); 
next(); 
node.callee = parseSubscripts(parseExprAtom(), true ); 
if (eat(_parenL)) node.arguments = parseExprList(_parenR, false ); 
 else node.arguments = empty; 
return finishNode(node, "NewExpression"); 
} 
function parseObj(){ 
var node = startNode(), first = true , sawGetSet = false ; 
node.properties = [] ; 
next(); 
while (!eat(_braceR)){ 
if (!first) { 
expect(_comma); 
if (options.allowTrailingCommas && eat(_braceR)) break ; 
} 
 else first = false ; 
var prop = { 
key: parsePropertyName()}
, isGetSet = false , kind; 
if (eat(_colon)) { 
prop.value = parseExpression(true ); 
kind = prop.kind = "init"; 
} 
 else if (options.ecmaVersion >= 5 && prop.key.type === "Identifier" && (prop.key.name === "get" || prop.key.name === "set")) { 
isGetSet = sawGetSet = true ; 
kind = prop.kind = prop.key.name; 
prop.key = parsePropertyName(); 
if (tokType !== _parenL) unexpected(); 
prop.value = parseFunction(startNode(), false ); 
} 
 else unexpected(); 
if (prop.key.type === "Identifier" && (strict || sawGetSet)) { 
for (var i = 0; 
i < _AN_Read_length("length", node.properties); ++i){ 
var other = node.properties[i]; 
if (other.key.name === prop.key.name) { 
var conflict = kind == other.kind || isGetSet && other.kind === "init" || kind === "init" && (other.kind === "get" || other.kind === "set"); 
if (conflict && !strict && kind === "init" && other.kind === "init") conflict = false ; 
if (conflict) raise(prop.key.start, "Redefinition of property"); 
} 
} 
} 
node.properties.push(prop); 
} 
return finishNode(node, "ObjectExpression"); 
} 
function parsePropertyName(){ 
if (tokType === _num || tokType === _string) return parseExprAtom(); 
return parseIdent(true ); 
} 
function parseFunction(node, isStatement){ 
if (tokType === _name) node.id = parseIdent(); 
 else if (isStatement) unexpected(); 
 else node.id = null ; 
node.params = [] ; 
var first = true ; 
expect(_parenL); 
while (!eat(_parenR)){ 
if (!first) expect(_comma); 
 else first = false ; 
node.params.push(parseIdent()); 
} 
var oldInFunc = inFunction, oldLabels = labels; 
inFunction = true ; 
labels = [] ; 
node.body = parseBlock(true ); 
inFunction = oldInFunc; 
labels = oldLabels; 
if (strict || _AN_Read_length("length", node.body.body) && isUseStrict(node.body.body[0])) { 
for (var i = node.id? -1: 0; 
i < _AN_Read_length("length", node.params); ++i){ 
var id = i < 0? node.id: node.params[i]; 
if (isStrictReservedWord(id.name) || isStrictBadIdWord(id.name)) raise(id.start, "Defining '" + id.name + "' in strict mode"); 
if (i >= 0) for (var j = 0; 
j < i; ++j)if (id.name === node.params[j].name) raise(id.start, "Argument name clash in strict mode"); 
} 
} 
return finishNode(node, isStatement? "FunctionDeclaration": "FunctionExpression"); 
} 
function parseExprList(close, allowTrailingComma, allowEmpty){ 
var elts = [] , first = true ; 
while (!eat(close)){ 
if (!first) { 
expect(_comma); 
if (allowTrailingComma && options.allowTrailingCommas && eat(close)) break ; 
} 
 else first = false ; 
if (allowEmpty && tokType === _comma) elts.push(null ); 
 else elts.push(parseExpression(true )); 
} 
return elts; 
} 
function parseIdent(liberal){ 
var node = startNode(); 
node.name = tokType === _name? tokVal: (liberal && !options.forbidReserved && tokType.keyword) || unexpected(); 
tokRegexpAllowed = false ; 
next(); 
return finishNode(node, "Identifier"); 
} 
} 
); 
(function (root, mod){ 
if (typeof exports == "object" && typeof module == "object") return mod(exports, require("./acorn")); 
if (typeof define == "function" && define.amd) return define(["exports", "./acorn"] , mod); 
mod(root.acorn || (root.acorn = { 
}
), root.acorn); 
} 
)(this, function (exports, acorn){ 
"use strict"; 
var tt = acorn.tokTypes; 
var options, input, fetchToken, context; 
exports.parse_dammit = function (inpt, opts){ 
if (!opts) opts = { 
}
; 
input = String(inpt); 
options = opts; 
if (!opts.tabSize) opts.tabSize = 4; 
fetchToken = acorn.tokenize(inpt, opts); 
sourceFile = options.sourceFile || null ; 
context = [] ; 
nextLineStart = 0; 
ahead.length = 0; 
next(); 
return parseTopLevel(); 
} 
; 
var lastEnd, token = { 
start: 0,
end: 0}
, ahead = [] ; 
var curLineStart, nextLineStart, curIndent, lastEndLoc, sourceFile; 
function next(){ 
lastEnd = token.end; 
if (options.locations) lastEndLoc = token.endLoc; 
if (ahead.length) token = ahead.shift(); 
 else token = readToken(); 
if (token.start >= nextLineStart) { 
while (token.start >= nextLineStart){ 
curLineStart = nextLineStart; 
nextLineStart = lineEnd(curLineStart) + 1; 
} 
curIndent = indentationAfter(curLineStart); 
} 
} 
function readToken(){ 
for (; ; ){ 
try { 
return fetchToken(); 
} 
catch (e) { 
if (!(e instanceof SyntaxError)) throw e
var msg = e.message, pos = e.raisedAt, replace = true ; 
if (/unterminated/i.test(msg)) { 
pos = lineEnd(e.pos); 
if (/string/.test(msg)) { 
replace = { 
start: e.pos,
end: pos,
type: tt.string,
value: input.slice(e.pos + 1, pos)}
; 
} 
 else if (/regular expr/i.test(msg)) { 
var re = input.slice(e.pos, pos); 
try { 
re = new RegExp(re); 
} 
catch (e) { 
} 
replace = { 
start: e.pos,
end: pos,
type: tt.regexp,
value: re}
; 
} 
 else { 
replace = false ; 
} 
} 
 else if (/invalid (unicode|regexp|number)|expecting unicode|octal literal|is reserved|directly after number/i.test(msg)) { 
while (pos < _AN_Read_length("length", input) && !isSpace(input.charCodeAt(pos)))++pos; 
} 
 else if (/character escape|expected hexadecimal/i.test(msg)) { 
while (pos < _AN_Read_length("length", input)){ 
var ch = input.charCodeAt(pos++ ); 
if (ch === 34 || ch === 39 || isNewline(ch)) break ; 
} 
} 
 else if (/unexpected character/i.test(msg)) { 
pos++ ; 
replace = false ; 
} 
 else { 
throw e
} 
resetTo(pos); 
if (replace === true ) replace = { 
start: pos,
end: pos,
type: tt.name,
value: "✖"}
; 
if (replace) { 
if (options.locations) { 
replace.startLoc = acorn.getLineInfo(input, replace.start); 
replace.endLoc = acorn.getLineInfo(input, replace.end); 
} 
return replace; 
} 
} 
} 
} 
function resetTo(pos){ 
var ch = input.charAt(pos - 1); 
var reAllowed = !ch || /[\[\{\(,;:?\/*=+\-~!|&%^<>]/.test(ch) || /[enwfd]/.test(ch) && /\b(keywords|case|else|return|throw|new|in|(instance|type)of|delete|void)$/.test(input.slice(pos - 10, pos)); 
fetchToken.jumpTo(pos, reAllowed); 
} 
function copyToken(token){ 
var copy = { 
start: token.start,
end: token.end,
type: token.type,
value: token.value}
; 
if (options.locations) { 
copy.startLoc = token.startLoc; 
copy.endLoc = token.endLoc; 
} 
return copy; 
} 
function lookAhead(n){ 
if (!_AN_Read_length("length", ahead)) token = copyToken(token); 
while (n > _AN_Read_length("length", ahead))ahead.push(copyToken(readToken())); 
return ahead[n - 1]; 
} 
var newline = /[\n\r\u2028\u2029]/; 
function isNewline(ch){ 
return ch === 10 || ch === 13 || ch === 8232 || ch === 8329; 
} 
function isSpace(ch){ 
return (ch < 14 && ch > 8) || ch === 32 || ch === 160 || isNewline(ch); 
} 
function pushCx(){ 
context.push(curIndent); 
} 
function popCx(){ 
curIndent = context.pop(); 
} 
function lineEnd(pos){ 
while (pos < _AN_Read_length("length", input) && !isNewline(input.charCodeAt(pos)))++pos; 
return pos; 
} 
function indentationAfter(pos){ 
for (var count = 0; 
; ++pos){ 
var ch = input.charCodeAt(pos); 
if (ch === 32) ++count; 
 else if (ch === 9) count += options.tabSize; 
 else return count; 
} 
} 
function closes(closeTok, indent, line, blockHeuristic){ 
if (token.type === closeTok || token.type === tt.eof) return true ; 
if (line != curLineStart && curIndent < indent && tokenStartsLine() && (!blockHeuristic || nextLineStart >= _AN_Read_length("length", input) || indentationAfter(nextLineStart) < indent)) return true ; 
return false ; 
} 
function tokenStartsLine(){ 
for (var p = token.start - 1; 
p >= curLineStart; --p){ 
var ch = input.charCodeAt(p); 
if (ch !== 9 && ch !== 32) return false ; 
} 
return true ; 
} 
function node_t(start){ 
this.type = null ; 
this.start = start; 
this.end = null ; 
} 
function node_loc_t(start){ 
this.start = start || token.startLoc || { 
line: 1,
column: 0}
; 
this.end = null ; 
if (sourceFile !== null ) this.source = sourceFile; 
} 
function startNode(){ 
var node = new node_t(token.start); 
if (options.locations) node.loc = new node_loc_t(); 
if (options.directSourceFile) node.sourceFile = options.directSourceFile; 
return node; 
} 
function startNodeFrom(other){ 
var node = new node_t(other.start); 
if (options.locations) node.loc = new node_loc_t(other.loc.start); 
return node; 
} 
function finishNode(node, type){ 
node.type = type; 
node.end = lastEnd; 
if (options.locations) node.loc.end = lastEndLoc; 
return node; 
} 
function getDummyLoc(){ 
if (options.locations) { 
var loc = new node_loc_t(); 
loc.end = loc.start; 
return loc; 
} 
} 
; 
function dummyIdent(){ 
var dummy = new node_t(token.start); 
dummy.type = "Identifier"; 
dummy.end = token.start; 
dummy.name = "✖"; 
dummy.loc = getDummyLoc(); 
return dummy; 
} 
function isDummy(node){ 
return node.name == "✖"; 
} 
function eat(type){ 
if (token.type === type) { 
next(); 
return true ; 
} 
} 
function canInsertSemicolon(){ 
return (token.type === tt.eof || token.type === tt.braceR || newline.test(input.slice(lastEnd, token.start))); 
} 
function semicolon(){ 
eat(tt.semi); 
} 
function expect(type){ 
if (eat(type)) return true ; 
if (lookAhead(1).type == type) { 
next(); 
next(); 
return true ; 
} 
if (lookAhead(2).type == type) { 
next(); 
next(); 
next(); 
return true ; 
} 
} 
function checkLVal(expr){ 
if (expr.type === "Identifier" || expr.type === "MemberExpression") return expr; 
return dummyIdent(); 
} 
function parseTopLevel(){ 
var node = startNode(); 
node.body = [] ; 
while (token.type !== tt.eof)node.body.push(parseStatement()); 
return finishNode(node, "Program"); 
} 
function parseStatement(){ 
var starttype = token.type, node = startNode(); 
switch (starttype){ 
case tt._break: case tt._continue: next(); 
var isBreak = starttype === tt._break; 
node.label = token.type === tt.name? parseIdent(): null ; 
semicolon(); 
return finishNode(node, isBreak? "BreakStatement": "ContinueStatement"); 
case tt._debugger: next(); 
semicolon(); 
return finishNode(node, "DebuggerStatement"); 
case tt._do: next(); 
node.body = parseStatement(); 
node.test = eat(tt._while)? parseParenExpression(): dummyIdent(); 
semicolon(); 
return finishNode(node, "DoWhileStatement"); 
case tt._for: next(); 
pushCx(); 
expect(tt.parenL); 
if (token.type === tt.semi) return parseFor(node, null ); 
if (token.type === tt._var) { 
var init = startNode(); 
next(); 
parseVar(init, true ); 
if (_AN_Read_length("length", init.declarations) === 1 && eat(tt._in)) return parseForIn(node, init); 
return parseFor(node, init); 
} 
var init = parseExpression(false , true ); 
if (eat(tt._in)) { 
return parseForIn(node, checkLVal(init)); 
} 
return parseFor(node, init); 
case tt._function: next(); 
return parseFunction(node, true ); 
case tt._if: next(); 
node.test = parseParenExpression(); 
node.consequent = parseStatement(); 
node.alternate = eat(tt._else)? parseStatement(): null ; 
return finishNode(node, "IfStatement"); 
case tt._return: next(); 
if (eat(tt.semi) || canInsertSemicolon()) node.argument = null ; 
 else { 
node.argument = parseExpression(); 
semicolon(); 
} 
return finishNode(node, "ReturnStatement"); 
case tt._switch: var blockIndent = curIndent, line = curLineStart; 
next(); 
node.discriminant = parseParenExpression(); 
node.cases = [] ; 
pushCx(); 
expect(tt.braceL); 
for (var cur; 
!closes(tt.braceR, blockIndent, line, true ); ){ 
if (token.type === tt._case || token.type === tt._default) { 
var isCase = token.type === tt._case; 
if (cur) finishNode(cur, "SwitchCase"); 
node.cases.push(cur = startNode()); 
cur.consequent = [] ; 
next(); 
if (isCase) cur.test = parseExpression(); 
 else cur.test = null ; 
expect(tt.colon); 
} 
 else { 
if (!cur) { 
node.cases.push(cur = startNode()); 
cur.consequent = [] ; 
cur.test = null ; 
} 
cur.consequent.push(parseStatement()); 
} 
} 
if (cur) finishNode(cur, "SwitchCase"); 
popCx(); 
eat(tt.braceR); 
return finishNode(node, "SwitchStatement"); 
case tt._throw: next(); 
node.argument = parseExpression(); 
semicolon(); 
return finishNode(node, "ThrowStatement"); 
case tt._try: next(); 
node.block = parseBlock(); 
node.handler = null ; 
if (token.type === tt._catch) { 
var clause = startNode(); 
next(); 
expect(tt.parenL); 
clause.param = parseIdent(); 
expect(tt.parenR); 
clause.guard = null ; 
clause.body = parseBlock(); 
node.handler = finishNode(clause, "CatchClause"); 
} 
node.finalizer = eat(tt._finally)? parseBlock(): null ; 
if (!node.handler && !node.finalizer) return node.block; 
return finishNode(node, "TryStatement"); 
case tt._var: next(); 
node = parseVar(node); 
semicolon(); 
return node; 
case tt._while: next(); 
node.test = parseParenExpression(); 
node.body = parseStatement(); 
return finishNode(node, "WhileStatement"); 
case tt._with: next(); 
node.object = parseParenExpression(); 
node.body = parseStatement(); 
return finishNode(node, "WithStatement"); 
case tt.braceL: return parseBlock(); 
case tt.semi: next(); 
return finishNode(node, "EmptyStatement"); 
default : { 
var expr = parseExpression(); 
if (isDummy(expr)) { 
next(); 
if (token.type === tt.eof) return finishNode(node, "EmptyStatement"); 
return parseStatement(); 
} 
 else if (starttype === tt.name && expr.type === "Identifier" && eat(tt.colon)) { 
node.body = parseStatement(); 
node.label = expr; 
return finishNode(node, "LabeledStatement"); 
} 
 else { 
node.expression = expr; 
semicolon(); 
return finishNode(node, "ExpressionStatement"); 
} 
} 
} 
} 
function parseBlock(){ 
var node = startNode(); 
pushCx(); 
expect(tt.braceL); 
var blockIndent = curIndent, line = curLineStart; 
node.body = [] ; 
while (!closes(tt.braceR, blockIndent, line, true ))node.body.push(parseStatement()); 
popCx(); 
eat(tt.braceR); 
return finishNode(node, "BlockStatement"); 
} 
function parseFor(node, init){ 
node.init = init; 
node.test = node.update = null ; 
if (eat(tt.semi) && token.type !== tt.semi) node.test = parseExpression(); 
if (eat(tt.semi) && token.type !== tt.parenR) node.update = parseExpression(); 
popCx(); 
expect(tt.parenR); 
node.body = parseStatement(); 
return finishNode(node, "ForStatement"); 
} 
function parseForIn(node, init){ 
node.left = init; 
node.right = parseExpression(); 
popCx(); 
expect(tt.parenR); 
node.body = parseStatement(); 
return finishNode(node, "ForInStatement"); 
} 
function parseVar(node, noIn){ 
node.declarations = [] ; 
node.kind = "var"; 
while (token.type === tt.name){ 
var decl = startNode(); 
decl.id = parseIdent(); 
decl.init = eat(tt.eq)? parseExpression(true , noIn): null ; 
node.declarations.push(finishNode(decl, "VariableDeclarator")); 
if (!eat(tt.comma)) break ; 
} 
if (!_AN_Read_length("length", node.declarations)) { 
var decl = startNode(); 
decl.id = dummyIdent(); 
node.declarations.push(finishNode(decl, "VariableDeclarator")); 
} 
return finishNode(node, "VariableDeclaration"); 
} 
function parseExpression(noComma, noIn){ 
var expr = parseMaybeAssign(noIn); 
if (!noComma && token.type === tt.comma) { 
var node = startNodeFrom(expr); 
node.expressions = [expr] ; 
while (eat(tt.comma))node.expressions.push(parseMaybeAssign(noIn)); 
return finishNode(node, "SequenceExpression"); 
} 
return expr; 
} 
function parseParenExpression(){ 
pushCx(); 
expect(tt.parenL); 
var val = parseExpression(); 
popCx(); 
expect(tt.parenR); 
return val; 
} 
function parseMaybeAssign(noIn){ 
var left = parseMaybeConditional(noIn); 
if (token.type.isAssign) { 
var node = startNodeFrom(left); 
node.operator = token.value; 
node.left = checkLVal(left); 
next(); 
node.right = parseMaybeAssign(noIn); 
return finishNode(node, "AssignmentExpression"); 
} 
return left; 
} 
function parseMaybeConditional(noIn){ 
var expr = parseExprOps(noIn); 
if (eat(tt.question)) { 
var node = startNodeFrom(expr); 
node.test = expr; 
node.consequent = parseExpression(true ); 
node.alternate = expect(tt.colon)? parseExpression(true , noIn): dummyIdent(); 
return finishNode(node, "ConditionalExpression"); 
} 
return expr; 
} 
function parseExprOps(noIn){ 
var indent = curIndent, line = curLineStart; 
return parseExprOp(parseMaybeUnary(noIn), -1, noIn, indent, line); 
} 
function parseExprOp(left, minPrec, noIn, indent, line){ 
if (curLineStart != line && curIndent < indent && tokenStartsLine()) return left; 
var prec = token.type.binop; 
if (prec != null  && (!noIn || token.type !== tt._in)) { 
if (prec > minPrec) { 
var node = startNodeFrom(left); 
node.left = left; 
node.operator = token.value; 
next(); 
if (curLineStart != line && curIndent < indent && tokenStartsLine()) node.right = dummyIdent(); 
 else node.right = parseExprOp(parseMaybeUnary(noIn), prec, noIn, indent, line); 
var node = finishNode(node, /&&|\|\|/.test(node.operator)? "LogicalExpression": "BinaryExpression"); 
return parseExprOp(node, minPrec, noIn, indent, line); 
} 
} 
return left; 
} 
function parseMaybeUnary(noIn){ 
if (token.type.prefix) { 
var node = startNode(), update = token.type.isUpdate; 
node.operator = token.value; 
node.prefix = true ; 
next(); 
node.argument = parseMaybeUnary(noIn); 
if (update) node.argument = checkLVal(node.argument); 
return finishNode(node, update? "UpdateExpression": "UnaryExpression"); 
} 
var expr = parseExprSubscripts(); 
while (token.type.postfix && !canInsertSemicolon()){ 
var node = startNodeFrom(expr); 
node.operator = token.value; 
node.prefix = false ; 
node.argument = checkLVal(expr); 
next(); 
expr = finishNode(node, "UpdateExpression"); 
} 
return expr; 
} 
function parseExprSubscripts(){ 
return parseSubscripts(parseExprAtom(), false , curIndent, curLineStart); 
} 
function parseSubscripts(base, noCalls, startIndent, line){ 
for (; ; ){ 
if (curLineStart != line && curIndent <= startIndent && tokenStartsLine()) { 
if (token.type == tt.dot && curIndent == startIndent) --startIndent; 
 else return base; 
} 
if (eat(tt.dot)) { 
var node = startNodeFrom(base); 
node.object = base; 
if (curLineStart != line && curIndent <= startIndent && tokenStartsLine()) node.property = dummyIdent(); 
 else node.property = parsePropertyName() || dummyIdent(); 
node.computed = false ; 
base = finishNode(node, "MemberExpression"); 
} 
 else if (token.type == tt.bracketL) { 
pushCx(); 
next(); 
var node = startNodeFrom(base); 
node.object = base; 
node.property = parseExpression(); 
node.computed = true ; 
popCx(); 
expect(tt.bracketR); 
base = finishNode(node, "MemberExpression"); 
} 
 else if (!noCalls && token.type == tt.parenL) { 
pushCx(); 
var node = startNodeFrom(base); 
node.callee = base; 
node.arguments = parseExprList(tt.parenR); 
base = finishNode(node, "CallExpression"); 
} 
 else { 
return base; 
} 
} 
} 
function parseExprAtom(){ 
switch (token.type){ 
case tt._this: var node = startNode(); 
next(); 
return finishNode(node, "ThisExpression"); 
case tt.name: return parseIdent(); 
case tt.num: case tt.string: case tt.regexp: var node = startNode(); 
node.value = token.value; 
node.raw = input.slice(token.start, token.end); 
next(); 
return finishNode(node, "Literal"); 
case tt._null: case tt._true: case tt._false: var node = startNode(); 
node.value = token.type.atomValue; 
node.raw = token.type.keyword; 
next(); 
return finishNode(node, "Literal"); 
case tt.parenL: var tokStart1 = token.start; 
next(); 
var val = parseExpression(); 
val.start = tokStart1; 
val.end = token.end; 
expect(tt.parenR); 
return val; 
case tt.bracketL: var node = startNode(); 
pushCx(); 
node.elements = parseExprList(tt.bracketR); 
return finishNode(node, "ArrayExpression"); 
case tt.braceL: return parseObj(); 
case tt._function: var node = startNode(); 
next(); 
return parseFunction(node, false ); 
case tt._new: return parseNew(); 
default : { 
return dummyIdent(); 
} 
} 
} 
function parseNew(){ 
var node = startNode(), startIndent = curIndent, line = curLineStart; 
next(); 
node.callee = parseSubscripts(parseExprAtom(), true , startIndent, line); 
if (token.type == tt.parenL) { 
pushCx(); 
node.arguments = parseExprList(tt.parenR); 
} 
 else { 
node.arguments = [] ; 
} 
return finishNode(node, "NewExpression"); 
} 
function parseObj(){ 
var node = startNode(); 
node.properties = [] ; 
pushCx(); 
next(); 
var propIndent = curIndent, line = curLineStart; 
while (!closes(tt.braceR, propIndent, line)){ 
var name = parsePropertyName(); 
if (!name) { 
if (isDummy(parseExpression(true ))) next(); 
eat(tt.comma); 
continue ; 
} 
var prop = { 
key: name}
, isGetSet = false , kind; 
if (eat(tt.colon)) { 
prop.value = parseExpression(true ); 
kind = prop.kind = "init"; 
} 
 else if (options.ecmaVersion >= 5 && prop.key.type === "Identifier" && (prop.key.name === "get" || prop.key.name === "set")) { 
isGetSet = true ; 
kind = prop.kind = prop.key.name; 
prop.key = parsePropertyName() || dummyIdent(); 
prop.value = parseFunction(startNode(), false ); 
} 
 else { 
next(); 
eat(tt.comma); 
continue ; 
} 
node.properties.push(prop); 
eat(tt.comma); 
} 
popCx(); 
eat(tt.braceR); 
return finishNode(node, "ObjectExpression"); 
} 
function parsePropertyName(){ 
if (token.type === tt.num || token.type === tt.string) return parseExprAtom(); 
if (token.type === tt.name || token.type.keyword) return parseIdent(); 
} 
function parseIdent(){ 
var node = startNode(); 
node.name = token.type === tt.name? token.value: token.type.keyword; 
next(); 
return finishNode(node, "Identifier"); 
} 
function parseFunction(node, isStatement){ 
if (token.type === tt.name) node.id = parseIdent(); 
 else if (isStatement) node.id = dummyIdent(); 
 else node.id = null ; 
node.params = [] ; 
pushCx(); 
expect(tt.parenL); 
while (token.type == tt.name){ 
node.params.push(parseIdent()); 
eat(tt.comma); 
} 
popCx(); 
eat(tt.parenR); 
node.body = parseBlock(); 
return finishNode(node, isStatement? "FunctionDeclaration": "FunctionExpression"); 
} 
function parseExprList(close){ 
var indent = curIndent, line = curLineStart, elts = [] , continuedLine = nextLineStart; 
next(); 
if (curLineStart > continuedLine) continuedLine = curLineStart; 
while (!closes(close, indent + (curLineStart <= continuedLine? 1: 0), line)){ 
var elt = parseExpression(true ); 
if (isDummy(elt)) { 
if (closes(close, indent, line)) break ; 
next(); 
} 
 else { 
elts.push(elt); 
} 
while (eat(tt.comma)){ 
} 
} 
popCx(); 
eat(close); 
return elts; 
} 
} 
); 
(function (mod){ 
if (typeof exports == "object" && typeof module == "object") return mod(require("infer"), require("tern"), require("comment"), require("walk")); 
if (typeof define == "function" && define.amd) return define(["infer", "tern", "comment", "walk"] , mod); 
mod(tern, tern, tern.comment, acorn.walk); 
} 
)(function (infer, tern, comment, walk){ 
"use strict"; 
tern.registerPlugin("doc_comment", function (){ 
return { 
passes: { 
"postParse": postParse,
"postInfer": postInfer}
}
; 
} 
); 
function postParse(ast, text){ 
function attachComments(node){ 
comment.ensureCommentsBefore(text, node); 
} 
walk.simple(ast, { 
VariableDeclaration: attachComments,
FunctionDeclaration: attachComments,
AssignmentExpression: function (node){ 
if (node.operator == "=") attachComments(node); 
} 
,
ObjectExpression: function (node){ 
for (var i = 0; 
i < _AN_Read_length("length", node.properties); ++i)attachComments(node.properties[i].key); 
} 
}
); 
} 
function postInfer(ast, scope){ 
walk.simple(ast, { 
VariableDeclaration: function (node, scope){ 
if (node.commentsBefore) interpretComments(node, node.commentsBefore, scope, scope.getProp(node.declarations[0].id.name)); 
} 
,
FunctionDeclaration: function (node, scope){ 
if (node.commentsBefore) interpretComments(node, node.commentsBefore, scope, scope.getProp(node.id.name), node.body.scope.fnType); 
} 
,
AssignmentExpression: function (node, scope){ 
if (node.commentsBefore) interpretComments(node, node.commentsBefore, scope, infer.expressionType({ 
node: node.left,
state: scope}
)); 
} 
,
ObjectExpression: function (node, scope){ 
for (var i = 0; 
i < _AN_Read_length("length", node.properties); ++i){ 
var prop = node.properties[i], key = prop.key; 
if (key.commentsBefore) interpretComments(prop, key.commentsBefore, scope, node.objType.getProp(key.name)); 
} 
} 
}
, infer.searchVisitor, scope); 
} 
function interpretComments(node, comments, scope, aval, type){ 
jsdocInterpretComments(node, scope, aval, comments); 
if (!type && aval instanceof infer.AVal && _AN_Read_length("length", aval.types)) { 
type = aval.types[_AN_Read_length("length", aval.types) - 1]; 
if (!(type instanceof infer.Obj) || type.origin != infer.cx().curOrigin || type.doc) type = null ; 
} 
var first = comments[0], dot = first.search(/\.\s/); 
if (dot > 5) first = first.slice(0, dot + 1); 
first = _AN_Call_replace("replace", first.trim(), /\s*\n\s*\*\s*|\s{1,}/g, " "); 
if (aval instanceof infer.AVal) aval.doc = first; 
if (type) type.doc = first; 
} 
function skipSpace(str, pos){ 
while (/\s/.test(str.charAt(pos)))++pos; 
return pos; 
} 
function parseLabelList(scope, str, pos, close){ 
var labels = [] , types = [] ; 
for (var first = true ; 
; first = false ){ 
pos = skipSpace(str, pos); 
if (first && str.charAt(pos) == close) break ; 
var colon = str.indexOf(":", pos); 
if (colon < 0) return null ; 
var label = str.slice(pos, colon); 
if (!/^[\w$]+$/.test(label)) return null ; 
labels.push(label); 
pos = colon + 1; 
var type = parseType(scope, str, pos); 
if (!type) return null ; 
pos = type.end; 
types.push(type.type); 
pos = skipSpace(str, pos); 
var next = str.charAt(pos); 
++pos; 
if (next == close) break ; 
if (next != ",") return null ; 
} 
return { 
labels: labels,
types: types,
end: pos}
; 
} 
function parseType(scope, str, pos){ 
pos = skipSpace(str, pos); 
var type; 
if (str.indexOf("function(", pos) == pos) { 
var args = parseLabelList(scope, str, pos + 9, ")"), ret = infer.ANull; 
if (!args) return null ; 
pos = skipSpace(str, args.end); 
if (str.charAt(pos) == ":") { 
++pos; 
var retType = parseType(scope, str, pos + 1); 
if (!retType) return null ; 
pos = retType.end; 
ret = retType.type; 
} 
type = new infer.Fn(null , infer.ANull, args.types, args.labels, ret); 
} 
 else if (str.charAt(pos) == "[") { 
var inner = parseType(scope, str, pos + 1); 
if (!inner) return null ; 
pos = skipSpace(str, inner.end); 
if (str.charAt(pos) != "]") return null ; 
++pos; 
type = new infer.Arr(inner.type); 
} 
 else if (str.charAt(pos) == "{") { 
var fields = parseLabelList(scope, str, pos + 1, "}"); 
if (!fields) return null ; 
type = new infer.Obj(true ); 
for (var i = 0; 
i < _AN_Read_length("length", fields.types); ++i){ 
var field = type.defProp(fields.labels[i]); 
field.initializer = true ; 
fields.types[i].propagate(field); 
} 
pos = fields.end; 
} 
 else { 
var start = pos; 
while (/[\w$]/.test(str.charAt(pos)))++pos; 
if (start == pos) return null ; 
var word = str.slice(start, pos); 
if (/^(number|integer)$/i.test(word)) type = infer.cx().num; 
 else if (/^bool(ean)?$/i.test(word)) type = infer.cx().bool; 
 else if (/^string$/i.test(word)) type = infer.cx().str; 
 else if (/^array$/i.test(word)) { 
var inner = null ; 
if (str.charAt(pos) == "." && str.charAt(pos + 1) == "<") { 
var inAngles = parseType(scope, str, pos + 2); 
if (!inAngles) return null ; 
pos = skipSpace(str, inAngles.end); 
if (str.charAt(pos++ ) != ">") return null ; 
inner = inAngles.type; 
} 
type = new infer.Arr(inner); 
} 
 else if (/^object$/i.test(word)) { 
type = new infer.Obj(true ); 
if (str.charAt(pos) == "." && str.charAt(pos + 1) == "<") { 
var key = parseType(scope, str, pos + 2); 
if (!key) return null ; 
pos = skipSpace(str, key.end); 
if (str.charAt(pos++ ) != ",") return null ; 
var val = parseType(scope, str, pos); 
if (!val) return null ; 
pos = skipSpace(str, val.end); 
if (str.charAt(pos++ ) != ">") return null ; 
val.type.propagate(type.defProp("<i>")); 
} 
} 
 else { 
var found = scope.hasProp(word); 
if (found) found = found.getType(); 
if (!found) { 
type = infer.ANull; 
} 
 else if (found instanceof infer.Fn && /^[A-Z]/.test(word)) { 
var proto = found.getProp("prototype").getType(); 
if (proto instanceof infer.Obj) type = infer.getInstance(proto); 
 else type = found; 
} 
 else { 
type = found; 
} 
} 
} 
var isOptional = false ; 
if (str.charAt(pos) == "=") { 
++pos; 
isOptional = true ; 
} 
return { 
type: type,
end: pos,
isOptional: isOptional}
; 
} 
function parseTypeOuter(scope, str, pos){ 
pos = skipSpace(str, pos || 0); 
if (str.charAt(pos) != "{") return null ; 
var result = parseType(scope, str, pos + 1); 
if (!result || str.charAt(result.end) != "}") return null ; 
++result.end; 
return result; 
} 
function jsdocInterpretComments(node, scope, aval, comments){ 
var type, args, ret, foundOne; 
for (var i = 0; 
i < _AN_Read_length("length", comments); ++i){ 
var comment = comments[i]; 
var decl = /(?:\n|$|\*)\s*@(type|param|arg(?:ument)?|returns?)\s+(.*)/g, m; 
while (m = decl.exec(comment)){ 
var parsed = parseTypeOuter(scope, m[2]); 
if (!parsed) continue ; 
foundOne = true ; 
switch (m[1]){ 
case "returns": case "return": ret = parsed.type; 
break ; 
case "type": type = parsed.type; 
break ; 
case "param": case "arg": case "argument": var name = m[2].slice(parsed.end).match(/^\s*([\w$]+)/); 
if (!name) continue ; 
var argname = name[1] + (parsed.isOptional? "?": ""); 
(args || (args = Object.create(null )))[argname] = parsed.type; 
break ; 
} 
} 
} 
if (foundOne) applyType(type, args, ret, node, aval); 
} 
; 
function applyType(type, args, ret, node, aval){ 
var fn; 
if (node.type == "VariableDeclaration") { 
var decl = node.declarations[0]; 
if (decl.init && decl.init.type == "FunctionExpression") fn = decl.init.body.scope.fnType; 
} 
 else if (node.type == "FunctionDeclaration") { 
fn = node.body.scope.fnType; 
} 
 else if (node.type == "AssignmentExpression") { 
if (node.right.type == "FunctionExpression") fn = node.right.body.scope.fnType; 
} 
 else { 
if (node.value.type == "FunctionExpression") fn = node.value.body.scope.fnType; 
} 
if (fn && (args || ret)) { 
if (args) for (var i = 0; 
i < _AN_Read_length("length", fn.argNames); ++i){ 
var name = fn.argNames[i], known = args[name]; 
if (!known && (known = args[name + "?"])) fn.argNames[i] += "?"; 
if (known) known.propagate(fn.args[i]); 
} 
if (ret) ret.propagate(fn.retval); 
} 
 else if (type) { 
type.propagate(aval); 
} 
} 
; 
} 
); 
(function (mod){ 
if (typeof exports == "object" && typeof module == "object") return mod(exports); 
if (typeof define == "function" && define.amd) return define(["exports"] , mod); 
mod(tern.comment || (tern.comment = { 
}
)); 
} 
)(function (exports){ 
function isSpace(ch){ 
return (ch < 14 && ch > 8) || ch === 32 || ch === 160; 
} 
function onOwnLine(text, pos){ 
for (; pos > 0; --pos){ 
var ch = text.charCodeAt(pos - 1); 
if (ch == 10) break ; 
if (!isSpace(ch)) return false ; 
} 
return true ; 
} 
exports.commentsBefore = function (text, pos){ 
var found = null , emptyLines = 0, topIsLineComment; 
out: while (pos > 0){ 
var prev = text.charCodeAt(pos - 1); 
if (prev == 10) { 
for (var scan = --pos, sawNonWS = false ; 
scan > 0; --scan){ 
prev = text.charCodeAt(scan - 1); 
if (prev == 47 && text.charCodeAt(scan - 2) == 47) { 
if (!onOwnLine(text, scan - 2)) break out; 
var content = text.slice(scan, pos); 
if (!emptyLines && topIsLineComment) found[0] = content + "\n" + found[0]; 
 else (found || (found = [] )).unshift(content); 
topIsLineComment = true ; 
emptyLines = 0; 
pos = scan - 2; 
break ; 
} 
 else if (prev == 10) { 
if (!sawNonWS && ++emptyLines > 1) break out; 
break ; 
} 
 else if (!sawNonWS && !isSpace(prev)) { 
sawNonWS = true ; 
} 
} 
} 
 else if (prev == 47 && text.charCodeAt(pos - 2) == 42) { 
for (var scan = pos - 2; 
scan > 1; --scan){ 
if (text.charCodeAt(scan - 1) == 42 && text.charCodeAt(scan - 2) == 47) { 
if (!onOwnLine(text, scan - 2)) break out; 
(found || (found = [] )).unshift(text.slice(scan, pos - 2)); 
topIsLineComment = false ; 
emptyLines = 0; 
break ; 
} 
} 
pos = scan - 2; 
} 
 else if (isSpace(prev)) { 
--pos; 
} 
 else { 
break ; 
} 
} 
return found; 
} 
; 
exports.commentAfter = function (text, pos){ 
while (pos < _AN_Read_length("length", text)){ 
var next = text.charCodeAt(pos); 
if (next == 47) { 
var after = text.charCodeAt(pos + 1), end; 
if (after == 47) end = text.indexOf("\n", pos + 2); 
 else if (after == 42) end = text.indexOf("*/", pos + 2); 
 else return ; 
return text.slice(pos + 2, end < 0? _AN_Read_length("length", text): end); 
} 
 else if (isSpace(next)) { 
++pos; 
} 
} 
} 
; 
exports.ensureCommentsBefore = function (text, node){ 
if (node.hasOwnProperty("commentsBefore")) return node.commentsBefore; 
return node.commentsBefore = exports.commentsBefore(text, node.start); 
} 
; 
} 
); 
(function (mod){ 
if (typeof exports == "object" && typeof module == "object") return exports.init = mod; 
if (typeof define == "function" && define.amd) return define({ 
init: mod}
); 
tern.def = { 
init: mod}
; 
} 
)(function (exports, infer){ 
"use strict"; 
function hop(obj, prop){ 
return Object.prototype.hasOwnProperty.call(obj, prop); 
} 
var TypeParser = exports.TypeParser = function (spec, start, base, forceNew){ 
this.pos = start || 0; 
this.spec = spec; 
this.base = base; 
this.forceNew = forceNew; 
} 
; 
TypeParser.prototype = { 
eat: function (str){ 
if (_AN_Read_length("length", str) == 1? this.spec.charAt(this.pos) == str: this.spec.indexOf(str, this.pos) == this.pos) { 
this.pos += _AN_Read_length("length", str); 
return true ; 
} 
} 
,
word: function (re){ 
var word = "", ch, re = re || /[\w$]/; 
while ((ch = this.spec.charAt(this.pos)) && re.test(ch)){ 
word += ch; 
++this.pos; 
} 
return word; 
} 
,
error: function (){ 
throw new Error("Unrecognized type spec: " + this.spec + " (at " + this.pos + ")")
} 
,
parseFnType: function (name, top){ 
var args = [] , names = [] ; 
if (!this.eat(")")) for (var i = 0; 
; ++i){ 
var colon = this.spec.indexOf(": ", this.pos), argname; 
if (colon != -1) { 
argname = this.spec.slice(this.pos, colon); 
if (/^[$\w?]+$/.test(argname)) this.pos = colon + 2; 
 else argname = null ; 
} 
names.push(argname); 
args.push(this.parseType()); 
if (!this.eat(", ")) { 
this.eat(")") || this.error(); 
break ; 
} 
} 
var retType, computeRet, computeRetStart, fn; 
if (this.eat(" -> ")) { 
if (top && this.spec.indexOf("!", this.pos) > -1) { 
retType = infer.ANull; 
computeRetStart = this.pos; 
computeRet = this.parseRetType(); 
} 
 else retType = this.parseType(); 
} 
 else retType = infer.ANull; 
if (top && (fn = this.base)) infer.Fn.call(this.base, name, infer.ANull, args, names, retType); 
 else fn = new infer.Fn(name, infer.ANull, args, names, retType); 
if (computeRet) fn.computeRet = computeRet; 
if (computeRetStart != null ) fn.computeRetSource = this.spec.slice(computeRetStart, this.pos); 
return fn; 
} 
,
parseType: function (name, top){ 
if (this.eat("fn(")) { 
return this.parseFnType(name, top); 
} 
 else if (this.eat("[")) { 
var inner = this.parseType(); 
this.eat("]") || this.error(); 
if (top && this.base) { 
infer.Arr.call(this.base, inner); 
return this.base; 
} 
return new infer.Arr(inner); 
} 
 else if (this.eat("+")) { 
var path = this.word(/[\w$<>\.!]/); 
var base = parsePath(path + ".prototype"); 
if (!(base instanceof infer.Obj)) base = parsePath(path); 
if (!(base instanceof infer.Obj)) return base; 
if (top && this.forceNew) return new infer.Obj(base); 
return infer.getInstance(base); 
} 
 else if (this.eat("?")) { 
return infer.ANull; 
} 
 else { 
var spec = this.word(/[\w$<>\.!]/), cx = infer.cx(); 
switch (spec){ 
case "number": return cx.num; 
case "string": return cx.str; 
case "bool": return cx.bool; 
case "<top>": return cx.topScope; 
} 
if (cx.localDefs && spec in cx.localDefs) return cx.localDefs[spec]; 
return parsePath(spec); 
} 
} 
,
parseBaseRetType: function (){ 
if (this.eat("[")) { 
var inner = this.parseRetType(); 
this.eat("]") || this.error(); 
return function (self, args){ 
return new infer.Arr(inner(self, args)); 
} 
; 
} 
 else if (this.eat("+")) { 
var base = this.parseRetType(); 
return function (self, args){ 
return infer.getInstance(base(self, args)); 
} 
; 
} 
 else if (this.eat("!")) { 
var arg = this.word(/\d/); 
if (arg) { 
arg = Number(arg); 
return function (_self, args){ 
return args[arg] || infer.ANull; 
} 
; 
} 
 else if (this.eat("this")) { 
return function (self){ 
return self; 
} 
; 
} 
 else if (this.eat("custom:")) { 
var fname = this.word(/[\w$]/); 
return customFunctions[fname] || function (){ 
return infer.ANull; 
} 
; 
} 
 else this.error(); 
} 
var t = this.parseType(); 
return function (){ 
return t; 
} 
; 
} 
,
extendRetType: function (base){ 
var propName = this.word(/[\w<>$!]/) || this.error(); 
if (propName == "!ret") return function (self, args){ 
var lhs = base(self, args); 
if (lhs.retval) return lhs.retval; 
var rv = new infer.AVal(); 
lhs.propagate(new infer.IsCallee(infer.ANull, [] , null , rv)); 
return rv; 
} 
; 
return function (self, args){ 
return base(self, args).getProp(propName); 
} 
; 
} 
,
parseRetType: function (){ 
var tp = this.parseBaseRetType(); 
while (this.eat("."))tp = this.extendRetType(tp); 
return tp; 
} 
}
; 
function parseType(spec, name, base, forceNew){ 
var type = new TypeParser(spec, null , base, forceNew).parseType(name, true ); 
if (/^fn\(/.test(spec)) for (var i = 0; 
i < _AN_Read_length("length", type.args); ++i)(function (i){ 
var arg = type.args[i]; 
if (arg instanceof infer.Fn && arg.args && _AN_Read_length("length", arg.args)) addEffect(type, function (_self, fArgs){ 
var fArg = fArgs[i]; 
if (fArg) fArg.propagate(new infer.IsCallee(infer.cx().topScope, arg.args, null , infer.ANull)); 
} 
); 
} 
)(i); 
return type; 
} 
function addEffect(fn, handler, replaceRet){ 
var oldCmp = fn.computeRet, rv = fn.retval; 
fn.computeRet = function (self, args, argNodes){ 
var handled = handler(self, args, argNodes); 
var old = oldCmp? oldCmp(self, args, argNodes): rv; 
return replaceRet? handled: old; 
} 
; 
} 
var parseEffect = exports.parseEffect = function (effect, fn){ 
var m; 
if (effect.indexOf("propagate ") == 0) { 
var p = new TypeParser(effect, 10); 
var getOrigin = p.parseRetType(); 
if (!p.eat(" ")) p.error(); 
var getTarget = p.parseRetType(); 
addEffect(fn, function (self, args){ 
getOrigin(self, args).propagate(getTarget(self, args)); 
} 
); 
} 
 else if (effect.indexOf("call ") == 0) { 
var andRet = effect.indexOf("and return ", 5) == 5; 
var p = new TypeParser(effect, andRet? 16: 5); 
var getCallee = p.parseRetType(), getSelf = null , getArgs = [] ; 
if (p.eat(" this=")) getSelf = p.parseRetType(); 
while (p.eat(" "))getArgs.push(p.parseRetType()); 
addEffect(fn, function (self, args){ 
var callee = getCallee(self, args); 
var slf = getSelf? getSelf(self, args): infer.ANull, as = [] ; 
for (var i = 0; 
i < _AN_Read_length("length", getArgs); ++i)as.push(getArgs[i](self, args)); 
var result = andRet? new infer.AVal(): infer.ANull; 
callee.propagate(new infer.IsCallee(slf, as, null , result)); 
return result; 
} 
, andRet); 
} 
 else if (m = effect.match(/^custom (\S+)\s*(.*)/)) { 
var customFunc = customFunctions[m[1]]; 
if (customFunc) addEffect(fn, m[2]? customFunc(m[2]): customFunc); 
} 
 else if (effect.indexOf("copy ") == 0) { 
var p = new TypeParser(effect, 5); 
var getFrom = p.parseRetType(); 
p.eat(" "); 
var getTo = p.parseRetType(); 
addEffect(fn, function (self, args){ 
var from = getFrom(self, args), to = getTo(self, args); 
from.forAllProps(function (prop, val, local){ 
if (local && prop != "<i>") to.propagate(new infer.PropHasSubset(prop, val)); 
} 
); 
} 
); 
} 
 else { 
throw new Error("Unknown effect type: " + effect)
} 
} 
; 
var currentTopScope; 
var parsePath = exports.parsePath = function (path){ 
var cx = infer.cx(), cached = cx.paths[path], origPath = path; 
if (cached != null ) return cached; 
cx.paths[path] = infer.ANull; 
var base = currentTopScope || cx.topScope; 
if (cx.localDefs) for (var name in cx.localDefs){ 
if (path.indexOf(name) == 0) { 
if (path == name) return cx.paths[path] = cx.localDefs[path]; 
if (path.charAt(_AN_Read_length("length", name)) == ".") { 
base = cx.localDefs[name]; 
path = path.slice(_AN_Read_length("length", name) + 1); 
break ; 
} 
} 
} 
var parts = path.split("."); 
for (var i = 0; 
i < _AN_Read_length("length", parts) && base != infer.ANull; ++i){ 
var prop = parts[i]; 
if (prop.charAt(0) == "!") { 
if (prop == "!proto") { 
base = (base instanceof infer.Obj && base.proto) || infer.ANull; 
} 
 else { 
var fn = base.getFunctionType(); 
if (!fn) { 
base = infer.ANull; 
} 
 else if (prop == "!ret") { 
base = fn.retval && fn.retval.getType() || infer.ANull; 
} 
 else { 
var arg = fn.args && fn.args[Number(prop.slice(1))]; 
base = (arg && arg.getType()) || infer.ANull; 
} 
} 
} 
 else if (base instanceof infer.Obj) { 
var propVal = (prop == "prototype" && base instanceof infer.Fn)? base.getProp(prop): base.props[prop]; 
if (!propVal || propVal.isEmpty()) base = infer.ANull; 
 else base = propVal.types[0]; 
} 
} 
cx.paths[origPath] = base == infer.ANull? null : base; 
return base; 
} 
; 
function emptyObj(ctor){ 
var empty = Object.create(ctor.prototype); 
empty.props = Object.create(null ); 
empty.isShell = true ; 
return empty; 
} 
function isSimpleAnnotation(spec){ 
if (!spec["!type"]  || /^fn\(/.test(spec["!type"] )) return false ; 
for (var prop in spec)if (prop != "!type" && prop != "!doc" && prop != "!url" && prop != "!span" && prop != "!data") return false ; 
return true ; 
} 
function passOne(base, spec, path){ 
if (!base) { 
var tp = spec["!type"] ; 
if (tp) { 
if (/^fn\(/.test(tp)) base = emptyObj(infer.Fn); 
 else if (tp.charAt(0) == "[") base = emptyObj(infer.Arr); 
 else throw new Error("Invalid !type spec: " + tp)
} 
 else if (spec["!stdProto"] ) { 
base = infer.cx().protos[spec["!stdProto"] ]; 
} 
 else { 
base = emptyObj(infer.Obj); 
} 
base.name = path; 
} 
for (var name in spec)if (hop(spec, name) && name.charCodeAt(0) != 33) { 
var inner = spec[name]; 
if (typeof inner == "string" || isSimpleAnnotation(inner)) continue ; 
var prop = base.defProp(name); 
passOne(prop.getType(), inner, path? path + "." + name: name).propagate(prop); 
} 
return base; 
} 
function passTwo(base, spec, path){ 
if (base.isShell) { 
delete base.isShell; 
var tp = spec["!type"] ; 
if (tp) { 
parseType(tp, path, base); 
} 
 else { 
var proto = spec["!proto"]  && parseType(spec["!proto"] ); 
infer.Obj.call(base, proto instanceof infer.Obj? proto: true , path); 
} 
} 
var effects = spec["!effects"] ; 
if (effects && base instanceof infer.Fn) for (var i = 0; 
i < _AN_Read_length("length", effects); ++i)parseEffect(effects[i], base); 
copyInfo(spec, base); 
for (var name in spec)if (hop(spec, name) && name.charCodeAt(0) != 33) { 
var inner = spec[name], known = base.defProp(name), innerPath = path? path + "." + name: name; 
var type = known.getType(); 
if (typeof inner == "string") { 
if (type) continue ; 
parseType(inner, innerPath).propagate(known); 
} 
 else { 
if (!isSimpleAnnotation(inner)) { 
passTwo(type, inner, innerPath); 
} 
 else if (!type) { 
parseType(inner["!type"] , innerPath, null , true ).propagate(known); 
type = known.getType(); 
if (type instanceof infer.Obj) copyInfo(inner, type); 
} 
 else continue ; 
if (inner["!doc"] ) known.doc = inner["!doc"] ; 
if (inner["!url"] ) _AN_Write_url("url", known, false , inner["!url"] ); 
if (inner["!span"] ) known.span = inner["!span"] ; 
} 
} 
} 
function copyInfo(spec, type){ 
if (spec["!doc"] ) type.doc = spec["!doc"] ; 
if (spec["!url"] ) _AN_Write_url("url", type, false , spec["!url"] ); 
if (spec["!span"] ) type.span = spec["!span"] ; 
if (spec["!data"] ) type.metaData = spec["!data"] ; 
} 
function runPasses(type, arg){ 
var parent = infer.cx().parent, pass = parent && parent.passes && parent.passes[type]; 
if (pass) for (var i = 0; 
i < _AN_Read_length("length", pass); i++ )pass[i](arg); 
} 
function doLoadEnvironment(data, scope){ 
var cx = infer.cx(); 
infer.addOrigin(cx.curOrigin = data["!name"]  || "env#" + _AN_Read_length("length", cx.origins)); 
cx.localDefs = cx.definitions[cx.curOrigin] = Object.create(null ); 
runPasses("preLoadDef", data); 
passOne(scope, data); 
var def = data["!define"] ; 
if (def) { 
for (var name in def){ 
var spec = def[name]; 
cx.localDefs[name] = typeof spec == "string"? parsePath(spec): passOne(null , spec, name); 
} 
for (var name in def){ 
var spec = def[name]; 
if (typeof spec != "string") passTwo(cx.localDefs[name], def[name], name); 
} 
} 
passTwo(scope, data); 
runPasses("postLoadDef", data); 
cx.curOrigin = cx.localDefs = null ; 
} 
exports.load = function (data, scope){ 
if (!scope) scope = infer.cx().topScope; 
var oldScope = currentTopScope; 
currentTopScope = scope; 
try { 
doLoadEnvironment(data, scope); 
} 
finally{ 
currentTopScope = oldScope; 
} 
} 
; 
var customFunctions = Object.create(null ); 
infer.registerFunction = function (name, f){ 
customFunctions[name] = f; 
} 
; 
var IsCreated = infer.constraint("created, target, spec", { 
addType: function (tp){ 
if (tp instanceof infer.Obj && this.created++  < 5) { 
var derived = new infer.Obj(tp), spec = this.spec; 
if (spec instanceof infer.AVal) spec = spec.getType(); 
if (spec instanceof infer.Obj) for (var prop in spec.props){ 
var cur = spec.props[prop].types[0]; 
var p = derived.defProp(prop); 
if (cur && cur instanceof infer.Obj && cur.props.value) { 
var vtp = cur.props.value.getType(); 
if (vtp) p.addType(vtp); 
} 
} 
_AN_Read_target("target", this).addType(derived); 
} 
} 
}
); 
infer.registerFunction("Object_create", function (_self, args, argNodes){ 
if (argNodes && _AN_Read_length("length", argNodes) && argNodes[0].type == "Literal" && argNodes[0].value == null ) return new infer.Obj(); 
var result = new infer.AVal(); 
if (args[0]) args[0].propagate(new IsCreated(0, result, args[1])); 
return result; 
} 
); 
var IsBound = infer.constraint("self, args, target", { 
addType: function (tp){ 
if (!(tp instanceof infer.Fn)) return ; 
_AN_Read_target("target", this).addType(new infer.Fn(tp.name, tp.self, tp.args.slice(_AN_Read_length("length", this.args)), tp.argNames.slice(_AN_Read_length("length", this.args)), tp.retval)); 
this.self.propagate(tp.self); 
for (var i = 0; 
i < Math.min(_AN_Read_length("length", tp.args), _AN_Read_length("length", this.args)); ++i)this.args[i].propagate(tp.args[i]); 
} 
}
); 
infer.registerFunction("Function_bind", function (self, args){ 
if (!_AN_Read_length("length", args)) return infer.ANull; 
var result = new infer.AVal(); 
self.propagate(new IsBound(args[0], args.slice(1), result)); 
return result; 
} 
); 
infer.registerFunction("Array_ctor", function (_self, args){ 
var arr = new infer.Arr(); 
if (_AN_Read_length("length", args) != 1 || !args[0].hasType(infer.cx().num)) { 
var content = arr.getProp("<i>"); 
for (var i = 0; 
i < _AN_Read_length("length", args); ++i)args[i].propagate(content); 
} 
return arr; 
} 
); 
return exports; 
} 
); 
(function (mod){ 
if (typeof exports == "object" && typeof module == "object") return mod(require("infer"), require("tern"), require("comment"), require("walk")); 
if (typeof define == "function" && define.amd) return define(["infer", "tern", "comment", "walk"] , mod); 
mod(tern, tern, tern.comment, acorn.walk); 
} 
)(function (infer, tern, comment, walk){ 
"use strict"; 
tern.registerPlugin("doc_comment", function (){ 
return { 
passes: { 
"postParse": postParse,
"postInfer": postInfer}
}
; 
} 
); 
function postParse(ast, text){ 
function attachComments(node){ 
comment.ensureCommentsBefore(text, node); 
} 
walk.simple(ast, { 
VariableDeclaration: attachComments,
FunctionDeclaration: attachComments,
AssignmentExpression: function (node){ 
if (node.operator == "=") attachComments(node); 
} 
,
ObjectExpression: function (node){ 
for (var i = 0; 
i < _AN_Read_length("length", node.properties); ++i)attachComments(node.properties[i].key); 
} 
}
); 
} 
function postInfer(ast, scope){ 
walk.simple(ast, { 
VariableDeclaration: function (node, scope){ 
if (node.commentsBefore) interpretComments(node, node.commentsBefore, scope, scope.getProp(node.declarations[0].id.name)); 
} 
,
FunctionDeclaration: function (node, scope){ 
if (node.commentsBefore) interpretComments(node, node.commentsBefore, scope, scope.getProp(node.id.name), node.body.scope.fnType); 
} 
,
AssignmentExpression: function (node, scope){ 
if (node.commentsBefore) interpretComments(node, node.commentsBefore, scope, infer.expressionType({ 
node: node.left,
state: scope}
)); 
} 
,
ObjectExpression: function (node, scope){ 
for (var i = 0; 
i < _AN_Read_length("length", node.properties); ++i){ 
var prop = node.properties[i], key = prop.key; 
if (key.commentsBefore) interpretComments(prop, key.commentsBefore, scope, node.objType.getProp(key.name)); 
} 
} 
}
, infer.searchVisitor, scope); 
} 
function interpretComments(node, comments, scope, aval, type){ 
jsdocInterpretComments(node, scope, aval, comments); 
if (!type && aval instanceof infer.AVal && _AN_Read_length("length", aval.types)) { 
type = aval.types[_AN_Read_length("length", aval.types) - 1]; 
if (!(type instanceof infer.Obj) || type.origin != infer.cx().curOrigin || type.doc) type = null ; 
} 
var first = comments[0], dot = first.search(/\.\s/); 
if (dot > 5) first = first.slice(0, dot + 1); 
first = _AN_Call_replace("replace", first.trim(), /\s*\n\s*\*\s*|\s{1,}/g, " "); 
if (aval instanceof infer.AVal) aval.doc = first; 
if (type) type.doc = first; 
} 
function skipSpace(str, pos){ 
while (/\s/.test(str.charAt(pos)))++pos; 
return pos; 
} 
function parseLabelList(scope, str, pos, close){ 
var labels = [] , types = [] ; 
for (var first = true ; 
; first = false ){ 
pos = skipSpace(str, pos); 
if (first && str.charAt(pos) == close) break ; 
var colon = str.indexOf(":", pos); 
if (colon < 0) return null ; 
var label = str.slice(pos, colon); 
if (!/^[\w$]+$/.test(label)) return null ; 
labels.push(label); 
pos = colon + 1; 
var type = parseType(scope, str, pos); 
if (!type) return null ; 
pos = type.end; 
types.push(type.type); 
pos = skipSpace(str, pos); 
var next = str.charAt(pos); 
++pos; 
if (next == close) break ; 
if (next != ",") return null ; 
} 
return { 
labels: labels,
types: types,
end: pos}
; 
} 
function parseType(scope, str, pos){ 
pos = skipSpace(str, pos); 
var type; 
if (str.indexOf("function(", pos) == pos) { 
var args = parseLabelList(scope, str, pos + 9, ")"), ret = infer.ANull; 
if (!args) return null ; 
pos = skipSpace(str, args.end); 
if (str.charAt(pos) == ":") { 
++pos; 
var retType = parseType(scope, str, pos + 1); 
if (!retType) return null ; 
pos = retType.end; 
ret = retType.type; 
} 
type = new infer.Fn(null , infer.ANull, args.types, args.labels, ret); 
} 
 else if (str.charAt(pos) == "[") { 
var inner = parseType(scope, str, pos + 1); 
if (!inner) return null ; 
pos = skipSpace(str, inner.end); 
if (str.charAt(pos) != "]") return null ; 
++pos; 
type = new infer.Arr(inner.type); 
} 
 else if (str.charAt(pos) == "{") { 
var fields = parseLabelList(scope, str, pos + 1, "}"); 
if (!fields) return null ; 
type = new infer.Obj(true ); 
for (var i = 0; 
i < _AN_Read_length("length", fields.types); ++i){ 
var field = type.defProp(fields.labels[i]); 
field.initializer = true ; 
fields.types[i].propagate(field); 
} 
pos = fields.end; 
} 
 else { 
var start = pos; 
while (/[\w$]/.test(str.charAt(pos)))++pos; 
if (start == pos) return null ; 
var word = str.slice(start, pos); 
if (/^(number|integer)$/i.test(word)) type = infer.cx().num; 
 else if (/^bool(ean)?$/i.test(word)) type = infer.cx().bool; 
 else if (/^string$/i.test(word)) type = infer.cx().str; 
 else if (/^array$/i.test(word)) { 
var inner = null ; 
if (str.charAt(pos) == "." && str.charAt(pos + 1) == "<") { 
var inAngles = parseType(scope, str, pos + 2); 
if (!inAngles) return null ; 
pos = skipSpace(str, inAngles.end); 
if (str.charAt(pos++ ) != ">") return null ; 
inner = inAngles.type; 
} 
type = new infer.Arr(inner); 
} 
 else if (/^object$/i.test(word)) { 
type = new infer.Obj(true ); 
if (str.charAt(pos) == "." && str.charAt(pos + 1) == "<") { 
var key = parseType(scope, str, pos + 2); 
if (!key) return null ; 
pos = skipSpace(str, key.end); 
if (str.charAt(pos++ ) != ",") return null ; 
var val = parseType(scope, str, pos); 
if (!val) return null ; 
pos = skipSpace(str, val.end); 
if (str.charAt(pos++ ) != ">") return null ; 
val.type.propagate(type.defProp("<i>")); 
} 
} 
 else { 
var found = scope.hasProp(word); 
if (found) found = found.getType(); 
if (!found) { 
type = infer.ANull; 
} 
 else if (found instanceof infer.Fn && /^[A-Z]/.test(word)) { 
var proto = found.getProp("prototype").getType(); 
if (proto instanceof infer.Obj) type = infer.getInstance(proto); 
 else type = found; 
} 
 else { 
type = found; 
} 
} 
} 
var isOptional = false ; 
if (str.charAt(pos) == "=") { 
++pos; 
isOptional = true ; 
} 
return { 
type: type,
end: pos,
isOptional: isOptional}
; 
} 
function parseTypeOuter(scope, str, pos){ 
pos = skipSpace(str, pos || 0); 
if (str.charAt(pos) != "{") return null ; 
var result = parseType(scope, str, pos + 1); 
if (!result || str.charAt(result.end) != "}") return null ; 
++result.end; 
return result; 
} 
function jsdocInterpretComments(node, scope, aval, comments){ 
var type, args, ret, foundOne; 
for (var i = 0; 
i < _AN_Read_length("length", comments); ++i){ 
var comment = comments[i]; 
var decl = /(?:\n|$|\*)\s*@(type|param|arg(?:ument)?|returns?)\s+(.*)/g, m; 
while (m = decl.exec(comment)){ 
var parsed = parseTypeOuter(scope, m[2]); 
if (!parsed) continue ; 
foundOne = true ; 
switch (m[1]){ 
case "returns": case "return": ret = parsed.type; 
break ; 
case "type": type = parsed.type; 
break ; 
case "param": case "arg": case "argument": var name = m[2].slice(parsed.end).match(/^\s*([\w$]+)/); 
if (!name) continue ; 
var argname = name[1] + (parsed.isOptional? "?": ""); 
(args || (args = Object.create(null )))[argname] = parsed.type; 
break ; 
} 
} 
} 
if (foundOne) applyType(type, args, ret, node, aval); 
} 
; 
function applyType(type, args, ret, node, aval){ 
var fn; 
if (node.type == "VariableDeclaration") { 
var decl = node.declarations[0]; 
if (decl.init && decl.init.type == "FunctionExpression") fn = decl.init.body.scope.fnType; 
} 
 else if (node.type == "FunctionDeclaration") { 
fn = node.body.scope.fnType; 
} 
 else if (node.type == "AssignmentExpression") { 
if (node.right.type == "FunctionExpression") fn = node.right.body.scope.fnType; 
} 
 else { 
if (node.value.type == "FunctionExpression") fn = node.value.body.scope.fnType; 
} 
if (fn && (args || ret)) { 
if (args) for (var i = 0; 
i < _AN_Read_length("length", fn.argNames); ++i){ 
var name = fn.argNames[i], known = args[name]; 
if (!known && (known = args[name + "?"])) fn.argNames[i] += "?"; 
if (known) known.propagate(fn.args[i]); 
} 
if (ret) ret.propagate(fn.retval); 
} 
 else if (type) { 
type.propagate(aval); 
} 
} 
; 
} 
); 
(function (mod){ 
if (typeof exports == "object" && typeof module == "object") return mod(exports, require("acorn"), require("acorn_loose"), require("walk"), require("./def"), require("./signal")); 
if (typeof define == "function" && define.amd) return define(["exports", "acorn", "acorn_loose", "walk", "./def", "./signal"] , mod); 
mod(self.tern || (self.tern = { 
}
), acorn, acorn, acorn.walk, tern.def, tern.signal); 
} 
)(function (exports, acorn, acorn_loose, walk, def, signal){ 
"use strict"; 
var toString = exports.toString = function (type, maxDepth, parent){ 
return !type || type == parent? "?": type.toString(maxDepth); 
} 
; 
var ANull = exports.ANull = signal.mixin({ 
addType: function (){ 
} 
,
propagate: function (){ 
} 
,
getProp: function (){ 
return ANull; 
} 
,
forAllProps: function (){ 
} 
,
hasType: function (){ 
return false ; 
} 
,
isEmpty: function (){ 
return true ; 
} 
,
getFunctionType: function (){ 
} 
,
getType: function (){ 
} 
,
gatherProperties: function (){ 
} 
,
propagatesTo: function (){ 
} 
,
typeHint: function (){ 
} 
,
propHint: function (){ 
} 
}
); 
function extend(proto, props){ 
var obj = Object.create(proto); 
if (props) for (var prop in props)obj[prop] = props[prop]; 
return obj; 
} 
var WG_DEFAULT = 100, WG_NEW_INSTANCE = 90, WG_MADEUP_PROTO = 10, WG_MULTI_MEMBER = 5, WG_CATCH_ERROR = 5, WG_GLOBAL_THIS = 90, WG_SPECULATIVE_THIS = 2; 
var AVal = exports.AVal = function (){ 
this.types = [] ; 
this.forward = null ; 
this.maxWeight = 0; 
} 
; 
AVal.prototype = extend(ANull, { 
addType: function (type, weight){ 
weight = weight || WG_DEFAULT; 
if (this.maxWeight < weight) { 
this.maxWeight = weight; 
if (_AN_Read_length("length", this.types) == 1 && this.types[0] == type) return ; 
this.types.length = 0; 
} 
 else if (this.maxWeight > weight || this.types.indexOf(type) > -1) { 
return ; 
} 
this.signal("addType", type); 
this.types.push(type); 
var forward = this.forward; 
if (forward) withWorklist(function (add){ 
for (var i = 0; 
i < _AN_Read_length("length", forward); ++i)add(type, forward[i], weight); 
} 
); 
} 
,
propagate: function (target, weight){ 
if (target == ANull || (target instanceof Type)) return ; 
if (weight && weight < WG_DEFAULT) target = new Muffle(target, weight); 
(this.forward || (this.forward = [] )).push(target); 
var types = this.types; 
if (types.length) withWorklist(function (add){ 
for (var i = 0; 
i < _AN_Read_length("length", types); ++i)add(types[i], target, weight); 
} 
); 
} 
,
getProp: function (prop){ 
if (prop == "__proto__" || prop == "✖") return ANull; 
var found = (this.props || (this.props = Object.create(null )))[prop]; 
if (!found) { 
found = this.props[prop] = new AVal(); 
this.propagate(new PropIsSubset(prop, found)); 
} 
return found; 
} 
,
forAllProps: function (c){ 
this.propagate(new ForAllProps(c)); 
} 
,
hasType: function (type){ 
return this.types.indexOf(type) > -1; 
} 
,
isEmpty: function (){ 
return _AN_Read_length("length", this.types) == 0; 
} 
,
getFunctionType: function (){ 
for (var i = _AN_Read_length("length", this.types) - 1; 
i >= 0; --i)if (this.types[i] instanceof Fn) return this.types[i]; 
} 
,
getType: function (guess){ 
if (_AN_Read_length("length", this.types) == 0 && guess !== false ) return this.makeupType(); 
if (_AN_Read_length("length", this.types) == 1) return this.types[0]; 
return canonicalType(this.types); 
} 
,
makeupType: function (){ 
if (!this.forward) return null ; 
for (var i = _AN_Read_length("length", this.forward) - 1; 
i >= 0; --i){ 
var hint = this.forward[i].typeHint(); 
if (hint && !hint.isEmpty()) { 
guessing = true ; 
return hint; 
} 
} 
var props = Object.create(null ), foundProp = null ; 
for (var i = 0; 
i < _AN_Read_length("length", this.forward); ++i){ 
var prop = this.forward[i].propHint(); 
if (prop && prop != "length" && prop != "<i>" && prop != "✖") { 
props[prop] = true ; 
foundProp = prop; 
} 
} 
if (!foundProp) return null ; 
var objs = objsWithProp(foundProp); 
if (objs) { 
var matches = [] ; 
search: for (var i = 0; 
i < _AN_Read_length("length", objs); ++i){ 
var obj = objs[i]; 
for (var prop in props)if (!obj.hasProp(prop)) continue search; 
if (obj.hasCtor) obj = getInstance(obj); 
matches.push(obj); 
} 
var canon = canonicalType(matches); 
if (canon) { 
guessing = true ; 
return canon; 
} 
} 
} 
,
typeHint: function (){ 
return _AN_Read_length("length", this.types)? this.getType(): null ; 
} 
,
propagatesTo: function (){ 
return this; 
} 
,
gatherProperties: function (f, depth){ 
for (var i = 0; 
i < _AN_Read_length("length", this.types); ++i)this.types[i].gatherProperties(f, depth); 
} 
,
guessProperties: function (f){ 
if (this.forward) for (var i = 0; 
i < _AN_Read_length("length", this.forward); ++i){ 
var prop = this.forward[i].propHint(); 
if (prop) f(prop, null , 0); 
} 
} 
}
); 
function canonicalType(types){ 
var arrays = 0, fns = 0, objs = 0, prim = null ; 
for (var i = 0; 
i < _AN_Read_length("length", types); ++i){ 
var tp = types[i]; 
if (tp instanceof Arr) ++arrays; 
 else if (tp instanceof Fn) ++fns; 
 else if (tp instanceof Obj) ++objs; 
 else if (tp instanceof Prim) { 
if (prim && tp.name != prim.name) return null ; 
prim = tp; 
} 
} 
var kinds = (arrays && 1) + (fns && 1) + (objs && 1) + (prim && 1); 
if (kinds > 1) return null ; 
if (prim) return prim; 
var maxScore = 0, maxTp = null ; 
for (var i = 0; 
i < _AN_Read_length("length", types); ++i){ 
var tp = types[i], score = 0; 
if (arrays) { 
score = tp.getProp("<i>").isEmpty()? 1: 2; 
} 
 else if (fns) { 
score = 1; 
for (var j = 0; 
j < _AN_Read_length("length", tp.args); ++j)if (!tp.args[j].isEmpty()) ++score; 
if (!tp.retval.isEmpty()) ++score; 
} 
 else if (objs) { 
score = tp.name? 100: 2; 
} 
 else if (prims) { 
score = 1; 
} 
if (score >= maxScore) { 
maxScore = score; 
maxTp = tp; 
} 
} 
return maxTp; 
} 
function Constraint(){ 
} 
Constraint.prototype = extend(ANull, { 
init: function (){ 
this.origin = cx.curOrigin; 
} 
}
); 
var constraint = exports.constraint = function (props, methods){ 
var body = "this.init();"; 
props = props? props.split(", "): [] ; 
for (var i = 0; 
i < _AN_Read_length("length", props); ++i)body += "this." + props[i] + " = " + props[i] + ";"; 
var ctor = Function.apply(null , props.concat([body] )); 
ctor.prototype = Object.create(Constraint.prototype); 
for (var m in methods)if (methods.hasOwnProperty(m)) ctor.prototype[m] = methods[m]; 
return ctor; 
} 
; 
var PropIsSubset = constraint("prop, target", { 
addType: function (type, weight){ 
if (type.getProp) type.getProp(this.prop).propagate(_AN_Read_target("target", this), weight); 
} 
,
propHint: function (){ 
return this.prop; 
} 
,
propagatesTo: function (){ 
return { 
target: _AN_Read_target("target", this),
pathExt: "." + this.prop}
; 
} 
}
); 
var PropHasSubset = exports.PropHasSubset = constraint("prop, type, originNode", { 
addType: function (type, weight){ 
if (!(type instanceof Obj)) return ; 
var prop = type.defProp(this.prop, this.originNode); 
prop.origin = this.origin; 
this.type.propagate(prop, weight); 
} 
,
propHint: function (){ 
return this.prop; 
} 
}
); 
var ForAllProps = constraint("c", { 
addType: function (type){ 
if (!(type instanceof Obj)) return ; 
type.forAllProps(this.c); 
} 
}
); 
function withDisabledComputing(fn, body){ 
cx.disabledComputing = { 
fn: fn,
prev: cx.disabledComputing}
; 
try { 
return body(); 
} 
finally{ 
cx.disabledComputing = cx.disabledComputing.prev; 
} 
} 
var IsCallee = exports.IsCallee = constraint("self, args, argNodes, retval", { 
init: function (){ 
_AN_Call_init("init", Constraint.prototype); 
this.disabled = cx.disabledComputing; 
} 
,
addType: function (fn, weight){ 
if (!(fn instanceof Fn)) return ; 
for (var i = 0; 
i < _AN_Read_length("length", this.args); ++i){ 
if (i < _AN_Read_length("length", fn.args)) this.args[i].propagate(fn.args[i], weight); 
if (fn.arguments) this.args[i].propagate(fn.arguments, weight); 
} 
this.self.propagate(fn.self, this.self == cx.topScope? WG_GLOBAL_THIS: weight); 
var compute = fn.computeRet; 
if (compute) for (var d = this.disabled; 
d; d = d.prev)if (d.fn == fn || fn.name && d.fn.name == fn.name) compute = null ; 
if (compute) compute(this.self, this.args, this.argNodes).propagate(this.retval, weight); 
 else fn.retval.propagate(this.retval, weight); 
} 
,
typeHint: function (){ 
var names = [] ; 
for (var i = 0; 
i < _AN_Read_length("length", this.args); ++i)names.push("?"); 
return new Fn(null , this.self, this.args, names, ANull); 
} 
,
propagatesTo: function (){ 
return { 
target: this.retval,
pathExt: ".!ret"}
; 
} 
}
); 
var HasMethodCall = constraint("propName, args, argNodes, retval", { 
init: function (){ 
_AN_Call_init("init", Constraint.prototype); 
this.disabled = cx.disabledComputing; 
} 
,
addType: function (obj, weight){ 
var callee = new IsCallee(obj, this.args, this.argNodes, this.retval); 
callee.disabled = this.disabled; 
obj.getProp(this.propName).propagate(callee, weight); 
} 
,
propHint: function (){ 
return this.propName; 
} 
}
); 
var IsCtor = exports.IsCtor = constraint("target, noReuse", { 
addType: function (f, weight){ 
if (!(f instanceof Fn)) return ; 
f.getProp("prototype").propagate(new IsProto(this.noReuse? false : f, (_AN_Read_target("target", this))), weight); 
} 
}
); 
var getInstance = exports.getInstance = function (obj, ctor){ 
if (ctor === false ) return new Obj(obj); 
if (!ctor) ctor = obj.hasCtor; 
if (!obj.instances) obj.instances = [] ; 
for (var i = 0; 
i < _AN_Read_length("length", obj.instances); ++i){ 
var cur = obj.instances[i]; 
if (cur.ctor == ctor) return cur.instance; 
} 
var instance = new Obj(obj, ctor && ctor.name); 
instance.origin = obj.origin; 
obj.instances.push({ 
ctor: ctor,
instance: instance}
); 
return instance; 
} 
; 
var IsProto = exports.IsProto = constraint("ctor, target", { 
addType: function (o, _weight){ 
if (!(o instanceof Obj)) return ; 
if ((this.count = (this.count || 0) + 1) > 8) return ; 
if (o == cx.protos.Array) _AN_Read_target("target", this).addType(new Arr()); 
 else _AN_Read_target("target", this).addType(getInstance(o, this.ctor)); 
} 
}
); 
var FnPrototype = constraint("fn", { 
addType: function (o, _weight){ 
if (o instanceof Obj && !o.hasCtor) { 
o.hasCtor = this.fn; 
var adder = new SpeculativeThis(o, this.fn); 
adder.addType(this.fn); 
o.forAllProps(function (_prop, val, local){ 
if (local) val.propagate(adder); 
} 
); 
} 
} 
}
); 
var IsAdded = constraint("other, target", { 
addType: function (type, weight){ 
if (type == cx.str) _AN_Read_target("target", this).addType(cx.str, weight); 
 else if (type == cx.num && this.other.hasType(cx.num)) _AN_Read_target("target", this).addType(cx.num, weight); 
} 
,
typeHint: function (){ 
return this.other; 
} 
}
); 
var IfObj = constraint("target", { 
addType: function (t, weight){ 
if (t instanceof Obj) _AN_Read_target("target", this).addType(t, weight); 
} 
,
propagatesTo: function (){ 
return _AN_Read_target("target", this); 
} 
}
); 
var SpeculativeThis = constraint("obj, ctor", { 
addType: function (tp){ 
if (tp instanceof Fn && tp.self && tp.self.isEmpty()) tp.self.addType(getInstance(this.obj, this.ctor), WG_SPECULATIVE_THIS); 
} 
}
); 
var Muffle = constraint("inner, weight", { 
addType: function (tp, weight){ 
this.inner.addType(tp, Math.min(weight, this.weight)); 
} 
,
propagatesTo: function (){ 
return this.inner.propagatesTo(); 
} 
,
typeHint: function (){ 
return this.inner.typeHint(); 
} 
,
propHint: function (){ 
return this.inner.propHint(); 
} 
}
); 
var Type = exports.Type = function (){ 
} 
; 
Type.prototype = extend(ANull, { 
propagate: function (c, w){ 
c.addType(this, w); 
} 
,
hasType: function (other){ 
return other == this; 
} 
,
isEmpty: function (){ 
return false ; 
} 
,
typeHint: function (){ 
return this; 
} 
,
getType: function (){ 
return this; 
} 
}
); 
var Prim = exports.Prim = function (proto, name){ 
this.name = name; 
this.proto = proto; 
} 
; 
Prim.prototype = extend(Type.prototype, { 
toString: function (){ 
return this.name; 
} 
,
getProp: function (prop){ 
return this.proto.hasProp(prop) || ANull; 
} 
,
gatherProperties: function (f, depth){ 
if (this.proto) this.proto.gatherProperties(f, depth); 
} 
}
); 
var Obj = exports.Obj = function (proto, name){ 
if (!this.props) this.props = Object.create(null ); 
this.proto = proto === true ? cx.protos.Object: proto; 
if (proto && !name && proto.name && !(this instanceof Fn)) { 
var match = /^(.*)\.prototype$/.exec(this.proto.name); 
if (match) name = match[1]; 
} 
this.name = name; 
this.maybeProps = null ; 
this.origin = cx.curOrigin; 
} 
; 
Obj.prototype = extend(Type.prototype, { 
toString: function (maxDepth){ 
if (!maxDepth && this.name) return this.name; 
var props = [] , etc = false ; 
for (var prop in this.props)if (prop != "<i>") { 
if (_AN_Read_length("length", props) > 5) { 
etc = true ; 
break ; 
} 
if (maxDepth) props.push(prop + ": " + toString(this.props[prop].getType(), maxDepth - 1)); 
 else props.push(prop); 
} 
props.sort(); 
if (etc) props.push("..."); 
return "{" + props.join(", ") + "}"; 
} 
,
hasProp: function (prop, searchProto){ 
var found = this.props[prop]; 
if (searchProto !== false ) for (var p = this.proto; 
p && !found; p = p.proto)found = p.props[prop]; 
return found; 
} 
,
defProp: function (prop, originNode){ 
var found = this.hasProp(prop, false ); 
if (found) { 
if (originNode && !found.originNode) found.originNode = originNode; 
return found; 
} 
if (prop == "__proto__" || prop == "✖") return ANull; 
var av = this.maybeProps && this.maybeProps[prop]; 
if (av) { 
delete this.maybeProps[prop]; 
this.maybeUnregProtoPropHandler(); 
} 
 else { 
av = new AVal(); 
} 
this.props[prop] = av; 
av.originNode = originNode; 
av.origin = cx.curOrigin; 
this.broadcastProp(prop, av, true ); 
return av; 
} 
,
getProp: function (prop){ 
var found = this.hasProp(prop, true ) || (this.maybeProps && this.maybeProps[prop]); 
if (found) return found; 
if (prop == "__proto__" || prop == "✖") return ANull; 
return this.ensureMaybeProps()[prop] = new AVal(); 
} 
,
broadcastProp: function (prop, val, local){ 
if (local) { 
this.signal("addProp", prop, val); 
if (!(this instanceof Scope)) registerProp(prop, this); 
} 
if (this.onNewProp) for (var i = 0; 
i < _AN_Read_length("length", this.onNewProp); ++i){ 
var h = this.onNewProp[i]; 
h.onProtoProp? h.onProtoProp(prop, val, local): h(prop, val, local); 
} 
} 
,
onProtoProp: function (prop, val, _local){ 
var maybe = this.maybeProps && this.maybeProps[prop]; 
if (maybe) { 
delete this.maybeProps[prop]; 
this.maybeUnregProtoPropHandler(); 
this.proto.getProp(prop).propagate(maybe); 
} 
this.broadcastProp(prop, val, false ); 
} 
,
ensureMaybeProps: function (){ 
if (!this.maybeProps) { 
if (this.proto) this.proto.forAllProps(this); 
this.maybeProps = Object.create(null ); 
} 
return this.maybeProps; 
} 
,
removeProp: function (prop){ 
var av = this.props[prop]; 
delete this.props[prop]; 
this.ensureMaybeProps()[prop] = av; 
} 
,
forAllProps: function (c){ 
if (!this.onNewProp) { 
this.onNewProp = [] ; 
if (this.proto) this.proto.forAllProps(this); 
} 
this.onNewProp.push(c); 
for (var o = this; 
o; o = o.proto)for (var prop in o.props){ 
if (c.onProtoProp) c.onProtoProp(prop, o.props[prop], o == this); 
 else c(prop, o.props[prop], o == this); 
} 
} 
,
maybeUnregProtoPropHandler: function (){ 
if (this.maybeProps) { 
for (var _n in this.maybeProps)return ; 
this.maybeProps = null ; 
} 
if (!this.proto || this.onNewProp && _AN_Read_length("length", this.onNewProp)) return ; 
this.proto.unregPropHandler(this); 
} 
,
unregPropHandler: function (handler){ 
for (var i = 0; 
i < _AN_Read_length("length", this.onNewProp); ++i)if (this.onNewProp[i] == handler) { 
this.onNewProp.splice(i, 1); 
break ; 
} 
this.maybeUnregProtoPropHandler(); 
} 
,
gatherProperties: function (f, depth){ 
for (var prop in this.props)if (prop != "<i>") f(prop, this, depth); 
if (this.proto) this.proto.gatherProperties(f, depth + 1); 
} 
}
); 
var Fn = exports.Fn = function (name, self, args, argNames, retval){ 
Obj.call(this, cx.protos.Function, name); 
this.self = self; 
this.args = args; 
this.argNames = argNames; 
this.retval = retval; 
} 
; 
Fn.prototype = extend(Obj.prototype, { 
toString: function (maxDepth){ 
if (maxDepth) maxDepth-- ; 
var str = "fn("; 
for (var i = 0; 
i < _AN_Read_length("length", this.args); ++i){ 
if (i) str += ", "; 
var name = this.argNames[i]; 
if (name && name != "?") str += name + ": "; 
str += toString(this.args[i].getType(), maxDepth, this); 
} 
str += ")"; 
if (!this.retval.isEmpty()) str += " -> " + toString(this.retval.getType(), maxDepth, this); 
return str; 
} 
,
getProp: function (prop){ 
if (prop == "prototype") { 
var known = this.hasProp(prop, false ); 
if (!known) { 
known = this.defProp(prop); 
var proto = new Obj(true , this.name && this.name + ".prototype"); 
proto.origin = this.origin; 
known.addType(proto, WG_MADEUP_PROTO); 
} 
return known; 
} 
return Obj.prototype.getProp.call(this, prop); 
} 
,
defProp: function (prop, originNode){ 
if (prop == "prototype") { 
var found = this.hasProp(prop, false ); 
if (found) return found; 
found = Obj.prototype.defProp.call(this, prop, originNode); 
found.origin = this.origin; 
found.propagate(new FnPrototype(this)); 
return found; 
} 
return Obj.prototype.defProp.call(this, prop, originNode); 
} 
,
getFunctionType: function (){ 
return this; 
} 
}
); 
var Arr = exports.Arr = function (contentType){ 
Obj.call(this, cx.protos.Array); 
var content = this.defProp("<i>"); 
if (contentType) contentType.propagate(content); 
} 
; 
Arr.prototype = extend(Obj.prototype, { 
toString: function (maxDepth){ 
return "[" + toString(this.getProp("<i>").getType(), maxDepth, this) + "]"; 
} 
}
); 
function registerProp(prop, obj){ 
var data = cx.props[prop] || (cx.props[prop] = [] ); 
data.push(obj); 
} 
function objsWithProp(prop){ 
return cx.props[prop]; 
} 
exports.Context = function (defs, parent){ 
this.parent = parent; 
this.props = Object.create(null ); 
this.protos = Object.create(null ); 
this.origins = [] ; 
this.curOrigin = "ecma5"; 
this.paths = Object.create(null ); 
this.definitions = Object.create(null ); 
this.purgeGen = 0; 
this.workList = null ; 
this.disabledComputing = null ; 
exports.withContext(this, function (){ 
cx.protos.Object = new Obj(null , "Object.prototype"); 
cx.topScope = new Scope(); 
cx.topScope.name = "<top>"; 
cx.protos.Array = new Obj(true , "Array.prototype"); 
cx.protos.Function = new Obj(true , "Function.prototype"); 
cx.protos.RegExp = new Obj(true , "RegExp.prototype"); 
cx.protos.String = new Obj(true , "String.prototype"); 
cx.protos.Number = new Obj(true , "Number.prototype"); 
cx.protos.Boolean = new Obj(true , "Boolean.prototype"); 
cx.str = new Prim(cx.protos.String, "string"); 
cx.bool = new Prim(cx.protos.Boolean, "bool"); 
cx.num = new Prim(cx.protos.Number, "number"); 
cx.curOrigin = null ; 
if (defs) for (var i = 0; 
i < _AN_Read_length("length", defs); ++i)_AN_Call_load("load", def, defs[i]); 
} 
); 
} 
; 
var cx = null ; 
exports.cx = function (){ 
return cx; 
} 
; 
exports.withContext = function (context, f){ 
var old = cx; 
cx = context; 
try { 
return f(); 
} 
finally{ 
cx = old; 
} 
} 
; 
exports.addOrigin = function (origin){ 
if (cx.origins.indexOf(origin) < 0) cx.origins.push(origin); 
} 
; 
var baseMaxWorkDepth = 20, reduceMaxWorkDepth = 0.0001; 
function withWorklist(f){ 
if (cx.workList) return f(cx.workList); 
var list = [] , depth = 0; 
var add = cx.workList = function (type, target, weight){ 
if (depth < baseMaxWorkDepth - reduceMaxWorkDepth * _AN_Read_length("length", list)) list.push(type, target, weight, depth); 
} 
; 
try { 
var ret = f(add); 
for (var i = 0; 
i < _AN_Read_length("length", list); i += 4){ 
depth = list[i + 3] + 1; 
list[i + 1].addType(list[i], list[i + 2]); 
} 
return ret; 
} 
finally{ 
cx.workList = null ; 
} 
} 
var Scope = exports.Scope = function (prev){ 
Obj.call(this, prev || true ); 
this.prev = prev; 
} 
; 
Scope.prototype = extend(Obj.prototype, { 
defVar: function (name, originNode){ 
for (var s = this; 
; s = s.proto){ 
var found = s.props[name]; 
if (found) return found; 
if (!s.prev) return s.defProp(name, originNode); 
} 
} 
}
); 
function maybeInstantiate(scope, score){ 
if (scope.fnType) scope.fnType.instantiateScore = (scope.fnType.instantiateScore || 0) + score; 
} 
var NotSmaller = { 
}
; 
function nodeSmallerThan(node, n){ 
try { 
walk.simple(node, { 
Expression: function (){ 
if (--n <= 0) throw NotSmaller
} 
}
); 
return true ; 
} 
catch (e) { 
if (e == NotSmaller) return false ; 
throw e
} 
} 
function maybeTagAsInstantiated(node, scope){ 
var score = scope.fnType.instantiateScore; 
if (!cx.disabledComputing && score && _AN_Read_length("length", scope.fnType.args) && nodeSmallerThan(node, score * 5)) { 
maybeInstantiate(scope.prev, score / 2); 
setFunctionInstantiated(node, scope); 
return true ; 
} 
 else { 
scope.fnType.instantiateScore = null ; 
} 
} 
function setFunctionInstantiated(node, scope){ 
var fn = scope.fnType; 
for (var i = 0; 
i < _AN_Read_length("length", fn.args); ++i)fn.args[i] = new AVal(); 
fn.self = new AVal(); 
fn.computeRet = function (self, args){ 
return withDisabledComputing(fn, function (){ 
var oldOrigin = cx.curOrigin; 
cx.curOrigin = fn.origin; 
var scopeCopy = new Scope(scope.prev); 
for (var v in scope.props){ 
var local = scopeCopy.defProp(v); 
for (var i = 0; 
i < _AN_Read_length("length", args); ++i)if (fn.argNames[i] == v && i < _AN_Read_length("length", args)) args[i].propagate(local); 
} 
var argNames = _AN_Read_length("length", fn.argNames) != _AN_Read_length("length", args)? fn.argNames.slice(0, _AN_Read_length("length", args)): fn.argNames; 
while (_AN_Read_length("length", argNames) < _AN_Read_length("length", args))argNames.push("?"); 
scopeCopy.fnType = new Fn(fn.name, self, args, argNames, ANull); 
if (fn.arguments) { 
var argset = scopeCopy.fnType.arguments = new AVal(); 
scopeCopy.defProp("arguments").addType(new Arr(argset)); 
for (var i = 0; 
i < _AN_Read_length("length", args); ++i)args[i].propagate(argset); 
} 
node.body.scope = scopeCopy; 
walk.recursive(node.body, scopeCopy, null , scopeGatherer); 
walk.recursive(node.body, scopeCopy, null , inferWrapper); 
cx.curOrigin = oldOrigin; 
return scopeCopy.fnType.retval; 
} 
); 
} 
; 
} 
function maybeTagAsGeneric(scope){ 
var fn = scope.fnType, target = fn.retval; 
if (target == ANull) return ; 
var targetInner, asArray; 
if (!target.isEmpty() && (targetInner = target.getType()) instanceof Arr) target = asArray = targetInner.getProp("<i>"); 
function explore(aval, path, depth){ 
if (depth > 3 || !aval.forward) return ; 
for (var i = 0; 
i < _AN_Read_length("length", aval.forward); ++i){ 
var prop = aval.forward[i].propagatesTo(); 
if (!prop) continue ; 
var newPath = path, dest; 
if (prop instanceof AVal) { 
dest = prop; 
} 
 else if (prop.target instanceof AVal) { 
newPath += prop.pathExt; 
dest = _AN_Read_target("target", prop); 
} 
 else continue ; 
if (dest == target) return newPath; 
var found = explore(dest, newPath, depth + 1); 
if (found) return found; 
} 
} 
var foundPath = explore(fn.self, "!this", 0); 
for (var i = 0; 
!foundPath && i < _AN_Read_length("length", fn.args); ++i)foundPath = explore(fn.args[i], "!" + i, 0); 
if (foundPath) { 
if (asArray) foundPath = "[" + foundPath + "]"; 
var p = new def.TypeParser(foundPath); 
fn.computeRet = p.parseRetType(); 
fn.computeRetSource = foundPath; 
return true ; 
} 
} 
function addVar(scope, nameNode){ 
var val = scope.defProp(nameNode.name, nameNode); 
if (val.maybePurge) val.maybePurge = false ; 
return val; 
} 
var scopeGatherer = walk.make({ 
Function: function (node, scope, c){ 
var inner = node.body.scope = new Scope(scope); 
inner.node = node; 
var argVals = [] , argNames = [] ; 
for (var i = 0; 
i < _AN_Read_length("length", node.params); ++i){ 
var param = node.params[i]; 
argNames.push(param.name); 
argVals.push(addVar(inner, param)); 
} 
inner.fnType = new Fn(node.id && node.id.name, new AVal(), argVals, argNames, ANull); 
inner.fnType.originNode = node; 
if (node.id) { 
var decl = node.type == "FunctionDeclaration"; 
addVar(decl? scope: inner, node.id); 
} 
c(node.body, inner, "ScopeBody"); 
} 
,
TryStatement: function (node, scope, c){ 
c(node.block, scope, "Statement"); 
if (node.handler) { 
var v = addVar(scope, node.handler.param); 
c(node.handler.body, scope, "ScopeBody"); 
var e5 = cx.definitions.ecma5; 
if (e5 && v.isEmpty()) getInstance(e5["Error.prototype"] ).propagate(v, WG_CATCH_ERROR); 
} 
if (node.finalizer) c(node.finalizer, scope, "Statement"); 
} 
,
VariableDeclaration: function (node, scope, c){ 
for (var i = 0; 
i < _AN_Read_length("length", node.declarations); ++i){ 
var decl = node.declarations[i]; 
addVar(scope, decl.id); 
if (decl.init) c(decl.init, scope, "Expression"); 
} 
} 
}
); 
function propName(node, scope, c){ 
var prop = node.property; 
if (!node.computed) return prop.name; 
if (prop.type == "Literal" && typeof prop.value == "string") return prop.value; 
if (c) infer(prop, scope, c, ANull); 
return "<i>"; 
} 
function unopResultType(op){ 
switch (op){ 
case "+": case "-": case "~": return cx.num; 
case "!": return cx.bool; 
case "typeof": return cx.str; 
case "void": case "delete": return ANull; 
} 
} 
function binopIsBoolean(op){ 
switch (op){ 
case "==": case "!=": case "===": case "!==": case "<": case ">": case ">=": case "<=": case "in": case "instanceof": return true ; 
} 
} 
function literalType(val){ 
switch (typeof val){ 
case "boolean": return cx.bool; 
case "number": return cx.num; 
case "string": return cx.str; 
case "object": case "function": if (!val) return ANull; 
return getInstance(cx.protos.RegExp); 
} 
} 
function ret(f){ 
return function (node, scope, c, out, name){ 
var r = f(node, scope, c, name); 
if (out) r.propagate(out); 
return r; 
} 
; 
} 
function fill(f){ 
return function (node, scope, c, out, name){ 
if (!out) out = new AVal(); 
f(node, scope, c, out, name); 
return out; 
} 
; 
} 
var inferExprVisitor = { 
ArrayExpression: ret(function (node, scope, c){ 
var eltval = new AVal(); 
for (var i = 0; 
i < _AN_Read_length("length", node.elements); ++i){ 
var elt = node.elements[i]; 
if (elt) infer(elt, scope, c, eltval); 
} 
return new Arr(eltval); 
} 
),
ObjectExpression: ret(function (node, scope, c, name){ 
var obj = node.objType = new Obj(true , name); 
obj.originNode = node; 
for (var i = 0; 
i < _AN_Read_length("length", node.properties); ++i){ 
var prop = node.properties[i], key = prop.key, name; 
if (key.type == "Identifier") { 
name = key.name; 
} 
 else if (typeof key.value == "string") { 
name = key.value; 
} 
 else { 
infer(prop.value, scope, c, ANull); 
continue ; 
} 
var val = obj.defProp(name, key); 
val.initializer = true ; 
infer(prop.value, scope, c, val, name); 
} 
return obj; 
} 
),
FunctionExpression: ret(function (node, scope, c, name){ 
var inner = node.body.scope, fn = inner.fnType; 
if (name && !fn.name) fn.name = name; 
c(node.body, scope, "ScopeBody"); 
maybeTagAsInstantiated(node, inner) || maybeTagAsGeneric(inner); 
if (node.id) inner.getProp(node.id.name).addType(fn); 
return fn; 
} 
),
SequenceExpression: ret(function (node, scope, c){ 
for (var i = 0, l = _AN_Read_length("length", node.expressions) - 1; 
i < l; ++i)infer(node.expressions[i], scope, c, ANull); 
return infer(node.expressions[l], scope, c); 
} 
),
UnaryExpression: ret(function (node, scope, c){ 
infer(node.argument, scope, c, ANull); 
return unopResultType(node.operator); 
} 
),
UpdateExpression: ret(function (node, scope, c){ 
infer(node.argument, scope, c, ANull); 
return cx.num; 
} 
),
BinaryExpression: ret(function (node, scope, c){ 
if (node.operator == "+") { 
var lhs = infer(node.left, scope, c); 
var rhs = infer(node.right, scope, c); 
if (lhs.hasType(cx.str) || rhs.hasType(cx.str)) return cx.str; 
if (lhs.hasType(cx.num) && rhs.hasType(cx.num)) return cx.num; 
var result = new AVal(); 
lhs.propagate(new IsAdded(rhs, result)); 
rhs.propagate(new IsAdded(lhs, result)); 
return result; 
} 
 else { 
infer(node.left, scope, c, ANull); 
infer(node.right, scope, c, ANull); 
return binopIsBoolean(node.operator)? cx.bool: cx.num; 
} 
} 
),
AssignmentExpression: ret(function (node, scope, c){ 
var rhs, name, pName; 
if (node.left.type == "MemberExpression") { 
pName = propName(node.left, scope, c); 
if (node.left.object.type == "Identifier") name = node.left.object.name + "." + pName; 
} 
 else { 
name = node.left.name; 
} 
if (node.operator != "=" && node.operator != "+=") { 
infer(node.right, scope, c, ANull); 
rhs = cx.num; 
} 
 else { 
rhs = infer(node.right, scope, c, null , name); 
} 
if (node.left.type == "MemberExpression") { 
var obj = infer(node.left.object, scope, c); 
if (pName == "prototype") maybeInstantiate(scope, 20); 
if (pName == "<i>") { 
var v = node.left.property.name, local = scope.props[v], over = local && local.iteratesOver; 
if (over) { 
maybeInstantiate(scope, 20); 
var fromRight = node.right.type == "MemberExpression" && node.right.computed && node.right.property.name == v; 
over.forAllProps(function (prop, val, local){ 
if (local && prop != "prototype" && prop != "<i>") obj.propagate(new PropHasSubset(prop, fromRight? val: ANull)); 
} 
); 
return rhs; 
} 
} 
obj.propagate(new PropHasSubset(pName, rhs, node.left.property)); 
} 
 else { 
var v = scope.defVar(node.left.name, node.left); 
if (v.maybePurge) v.maybePurge = false ; 
rhs.propagate(v); 
} 
return rhs; 
} 
),
LogicalExpression: fill(function (node, scope, c, out){ 
infer(node.left, scope, c, out); 
infer(node.right, scope, c, out); 
} 
),
ConditionalExpression: fill(function (node, scope, c, out){ 
infer(node.test, scope, c, ANull); 
infer(node.consequent, scope, c, out); 
infer(node.alternate, scope, c, out); 
} 
),
NewExpression: fill(function (node, scope, c, out, name){ 
if (node.callee.type == "Identifier" && node.callee.name in scope.props) maybeInstantiate(scope, 20); 
for (var i = 0, args = [] ; 
i < _AN_Read_length("length", node.arguments); ++i)args.push(infer(node.arguments[i], scope, c)); 
var callee = infer(node.callee, scope, c); 
var self = new AVal(); 
callee.propagate(new IsCtor(self, name && /\.prototype$/.test(name))); 
self.propagate(out, WG_NEW_INSTANCE); 
callee.propagate(new IsCallee(self, args, node.arguments, new IfObj(out))); 
} 
),
CallExpression: fill(function (node, scope, c, out){ 
for (var i = 0, args = [] ; 
i < _AN_Read_length("length", node.arguments); ++i)args.push(infer(node.arguments[i], scope, c)); 
if (node.callee.type == "MemberExpression") { 
var self = infer(node.callee.object, scope, c); 
var pName = propName(node.callee, scope, c); 
if ((pName == "call" || pName == "apply") && scope.fnType && scope.fnType.args.indexOf(self) > -1) maybeInstantiate(scope, 30); 
self.propagate(new HasMethodCall(pName, args, node.arguments, out)); 
} 
 else { 
var callee = infer(node.callee, scope, c); 
if (scope.fnType && scope.fnType.args.indexOf(callee) > -1) maybeInstantiate(scope, 30); 
var knownFn = callee.getFunctionType(); 
if (knownFn && knownFn.instantiateScore && scope.fnType) maybeInstantiate(scope, knownFn.instantiateScore / 5); 
callee.propagate(new IsCallee(cx.topScope, args, node.arguments, out)); 
} 
} 
),
MemberExpression: fill(function (node, scope, c, out){ 
var name = propName(node, scope); 
var obj = infer(node.object, scope, c); 
var prop = obj.getProp(name); 
if (name == "<i>") { 
var propType = infer(node.property, scope, c); 
if (!propType.hasType(cx.num)) return prop.propagate(out, WG_MULTI_MEMBER); 
} 
prop.propagate(out); 
} 
),
Identifier: ret(function (node, scope){ 
if (node.name == "arguments" && scope.fnType && !(node.name in scope.props)) scope.defProp(node.name, scope.fnType.originNode).addType(new Arr(scope.fnType.arguments = new AVal())); 
return scope.getProp(node.name); 
} 
),
ThisExpression: ret(function (_node, scope){ 
return scope.fnType? scope.fnType.self: cx.topScope; 
} 
),
Literal: ret(function (node){ 
return literalType(node.value); 
} 
)}
; 
function infer(node, scope, c, out, name){ 
return inferExprVisitor[node.type](node, scope, c, out, name); 
} 
var inferWrapper = walk.make({ 
Expression: function (node, scope, c){ 
infer(node, scope, c, ANull); 
} 
,
FunctionDeclaration: function (node, scope, c){ 
var inner = node.body.scope, fn = inner.fnType; 
c(node.body, scope, "ScopeBody"); 
maybeTagAsInstantiated(node, inner) || maybeTagAsGeneric(inner); 
var prop = scope.getProp(node.id.name); 
prop.addType(fn); 
} 
,
VariableDeclaration: function (node, scope, c){ 
for (var i = 0; 
i < _AN_Read_length("length", node.declarations); ++i){ 
var decl = node.declarations[i], prop = scope.getProp(decl.id.name); 
if (decl.init) infer(decl.init, scope, c, prop, decl.id.name); 
} 
} 
,
ReturnStatement: function (node, scope, c){ 
if (node.argument && scope.fnType) { 
if (scope.fnType.retval == ANull) scope.fnType.retval = new AVal(); 
infer(node.argument, scope, c, scope.fnType.retval); 
} 
} 
,
ForInStatement: function (node, scope, c){ 
var source = infer(node.right, scope, c); 
if ((node.right.type == "Identifier" && node.right.name in scope.props) || (node.right.type == "MemberExpression" && node.right.property.name == "prototype")) { 
maybeInstantiate(scope, 5); 
var varName; 
if (node.left.type == "Identifier") { 
varName = node.left.name; 
} 
 else if (node.left.type == "VariableDeclaration") { 
varName = node.left.declarations[0].id.name; 
} 
if (varName && varName in scope.props) scope.getProp(varName).iteratesOver = source; 
} 
c(node.body, scope, "Statement"); 
} 
,
ScopeBody: function (node, scope, c){ 
c(node, node.scope || scope); 
} 
}
); 
function runPasses(passes, pass){ 
var arr = passes && passes[pass]; 
var args = Array.prototype.slice.call(arguments, 2); 
if (arr) for (var i = 0; 
i < _AN_Read_length("length", arr); ++i)arr[i].apply(null , args); 
} 
var parse = exports.parse = function (text, passes, options){ 
var ast; 
try { 
ast = acorn.parse(text, options); 
} 
catch (e) { 
ast = acorn_loose.parse_dammit(text, options); 
} 
runPasses(passes, "postParse", ast, text); 
return ast; 
} 
; 
exports.analyze = function (ast, name, scope, passes){ 
if (typeof ast == "string") ast = parse(ast); 
if (!name) name = "file#" + _AN_Read_length("length", cx.origins); 
exports.addOrigin(cx.curOrigin = name); 
if (!scope) scope = cx.topScope; 
walk.recursive(ast, scope, null , scopeGatherer); 
runPasses(passes, "preInfer", ast, scope); 
walk.recursive(ast, scope, null , inferWrapper); 
runPasses(passes, "postInfer", ast, scope); 
cx.curOrigin = null ; 
} 
; 
exports.purgeTypes = function (origins, start, end){ 
var test = makePredicate(origins, start, end); 
++cx.purgeGen; 
cx.topScope.purge(test); 
for (var prop in cx.props){ 
var list = cx.props[prop]; 
for (var i = 0; 
i < _AN_Read_length("length", list); ++i){ 
var obj = list[i], av = obj.props[prop]; 
if (!av || test(av, av.originNode)) list.splice(i-- , 1); 
} 
if (!_AN_Read_length("length", list)) delete cx.props[prop]; 
} 
} 
; 
function makePredicate(origins, start, end){ 
var arr = Array.isArray(origins); 
if (arr && _AN_Read_length("length", origins) == 1) { 
origins = origins[0]; 
arr = false ; 
} 
if (arr) { 
if (end == null ) return function (n){ 
return origins.indexOf(n.origin) > -1; 
} 
; 
return function (n, pos){ 
return pos && pos.start >= start && pos.end <= end && origins.indexOf(n.origin) > -1; 
} 
; 
} 
 else { 
if (end == null ) return function (n){ 
return n.origin == origins; 
} 
; 
return function (n, pos){ 
return pos && pos.start >= start && pos.end <= end && n.origin == origins; 
} 
; 
} 
} 
AVal.prototype.purge = function (test){ 
if (this.purgeGen == cx.purgeGen) return ; 
this.purgeGen = cx.purgeGen; 
for (var i = 0; 
i < _AN_Read_length("length", this.types); ++i){ 
var type = this.types[i]; 
if (test(type, type.originNode)) this.types.splice(i-- , 1); 
 else type.purge(test); 
} 
if (this.forward) for (var i = 0; 
i < _AN_Read_length("length", this.forward); ++i){ 
var f = this.forward[i]; 
if (test(f)) { 
this.forward.splice(i-- , 1); 
if (this.props) this.props = null ; 
} 
 else if (f.purge) { 
f.purge(test); 
} 
} 
} 
; 
ANull.purge = function (){ 
} 
; 
Obj.prototype.purge = function (test){ 
if (this.purgeGen == cx.purgeGen) return true ; 
this.purgeGen = cx.purgeGen; 
for (var p in this.props){ 
var av = this.props[p]; 
if (test(av, av.originNode)) this.removeProp(p); 
av.purge(test); 
} 
} 
; 
Fn.prototype.purge = function (test){ 
if (Obj.prototype.purge.call(this, test)) return ; 
this.self.purge(test); 
this.retval.purge(test); 
for (var i = 0; 
i < _AN_Read_length("length", this.args); ++i)this.args[i].purge(test); 
} 
; 
exports.markVariablesDefinedBy = function (scope, origins, start, end){ 
var test = makePredicate(origins, start, end); 
for (var s = scope; 
s; s = s.prev)for (var p in s.props){ 
var prop = s.props[p]; 
if (test(prop, prop.originNode)) { 
prop.maybePurge = true ; 
if (start == null  && prop.originNode) prop.originNode = null ; 
} 
} 
} 
; 
exports.purgeMarkedVariables = function (scope){ 
for (var s = scope; 
s; s = s.prev)for (var p in s.props)if (s.props[p].maybePurge) delete s.props[p]; 
} 
; 
function findByPropertyName(name){ 
guessing = true ; 
var found = objsWithProp(name); 
if (found) for (var i = 0; 
i < _AN_Read_length("length", found); ++i){ 
var val = found[i].getProp(name); 
if (!val.isEmpty()) return val; 
} 
return ANull; 
} 
var typeFinder = { 
ArrayExpression: function (node, scope){ 
var eltval = new AVal(); 
for (var i = 0; 
i < _AN_Read_length("length", node.elements); ++i){ 
var elt = node.elements[i]; 
if (elt) findType(elt, scope).propagate(eltval); 
} 
return new Arr(eltval); 
} 
,
ObjectExpression: function (node){ 
return node.objType; 
} 
,
FunctionExpression: function (node){ 
return node.body.scope.fnType; 
} 
,
SequenceExpression: function (node, scope){ 
return findType(node.expressions[_AN_Read_length("length", node.expressions) - 1], scope); 
} 
,
UnaryExpression: function (node){ 
return unopResultType(node.operator); 
} 
,
UpdateExpression: function (){ 
return cx.num; 
} 
,
BinaryExpression: function (node, scope){ 
if (binopIsBoolean(node.operator)) return cx.bool; 
if (node.operator == "+") { 
var lhs = findType(node.left, scope); 
var rhs = findType(node.right, scope); 
if (lhs.hasType(cx.str) || rhs.hasType(cx.str)) return cx.str; 
} 
return cx.num; 
} 
,
AssignmentExpression: function (node, scope){ 
return findType(node.right, scope); 
} 
,
LogicalExpression: function (node, scope){ 
var lhs = findType(node.left, scope); 
return lhs.isEmpty()? findType(node.right, scope): lhs; 
} 
,
ConditionalExpression: function (node, scope){ 
var lhs = findType(node.consequent, scope); 
return lhs.isEmpty()? findType(node.alternate, scope): lhs; 
} 
,
NewExpression: function (node, scope){ 
var f = findType(node.callee, scope).getFunctionType(); 
var proto = f && f.getProp("prototype").getType(); 
if (!proto) return ANull; 
return getInstance(proto, f); 
} 
,
CallExpression: function (node, scope){ 
var f = findType(node.callee, scope).getFunctionType(); 
if (!f) return ANull; 
if (f.computeRet) { 
for (var i = 0, args = [] ; 
i < _AN_Read_length("length", node.arguments); ++i)args.push(findType(node.arguments[i], scope)); 
var self = ANull; 
if (node.callee.type == "MemberExpression") self = findType(node.callee.object, scope); 
return f.computeRet(self, args, node.arguments); 
} 
 else { 
return f.retval; 
} 
} 
,
MemberExpression: function (node, scope){ 
var propN = propName(node, scope), obj = findType(node.object, scope).getType(); 
if (obj) return obj.getProp(propN); 
if (propN == "<i>") return ANull; 
return findByPropertyName(propN); 
} 
,
Identifier: function (node, scope){ 
return scope.hasProp(node.name) || ANull; 
} 
,
ThisExpression: function (_node, scope){ 
return scope.fnType? scope.fnType.self: cx.topScope; 
} 
,
Literal: function (node){ 
return literalType(node.value); 
} 
}
; 
function findType(node, scope){ 
var found = typeFinder[node.type](node, scope); 
return found; 
} 
var searchVisitor = exports.searchVisitor = walk.make({ 
Function: function (node, _st, c){ 
var scope = node.body.scope; 
if (node.id) c(node.id, scope); 
for (var i = 0; 
i < _AN_Read_length("length", node.params); ++i)c(node.params[i], scope); 
c(node.body, scope, "ScopeBody"); 
} 
,
TryStatement: function (node, st, c){ 
if (node.handler) c(node.handler.param, st); 
walk.base.TryStatement(node, st, c); 
} 
,
VariableDeclaration: function (node, st, c){ 
for (var i = 0; 
i < _AN_Read_length("length", node.declarations); ++i){ 
var decl = node.declarations[i]; 
c(decl.id, st); 
if (decl.init) c(decl.init, st, "Expression"); 
} 
} 
}
); 
exports.fullVisitor = walk.make({ 
MemberExpression: function (node, st, c){ 
c(node.object, st, "Expression"); 
c(node.property, st, node.computed? "Expression": null ); 
} 
,
ObjectExpression: function (node, st, c){ 
for (var i = 0; 
i < _AN_Read_length("length", node.properties); ++i){ 
c(node.properties[i].value, st, "Expression"); 
c(node.properties[i].key, st); 
} 
} 
}
, searchVisitor); 
exports.findExpressionAt = function (ast, start, end, defaultScope, filter){ 
var test = filter || function (_t, node){ 
return typeFinder.hasOwnProperty(node.type); 
} 
; 
return walk.findNodeAt(ast, start, end, test, searchVisitor, defaultScope || cx.topScope); 
} 
; 
exports.findExpressionAround = function (ast, start, end, defaultScope, filter){ 
var test = filter || function (_t, node){ 
if (start != null  && node.start > start) return false ; 
return typeFinder.hasOwnProperty(node.type); 
} 
; 
return walk.findNodeAround(ast, end, test, searchVisitor, defaultScope || cx.topScope); 
} 
; 
exports.expressionType = function (found){ 
return findType(found.node, found.state); 
} 
; 
var guessing = false ; 
exports.resetGuessing = function (val){ 
guessing = val; 
} 
; 
exports.didGuess = function (){ 
return guessing; 
} 
; 
exports.forAllPropertiesOf = function (type, f){ 
type.gatherProperties(f, 0); 
} 
; 
var refFindWalker = walk.make({ 
}
, searchVisitor); 
exports.findRefs = function (ast, baseScope, name, refScope, f){ 
refFindWalker.Identifier = function (node, scope){ 
if (node.name != name) return ; 
for (var s = scope; 
s; s = s.prev){ 
if (s == refScope) f(node, scope); 
if (name in s.props) return ; 
} 
} 
; 
walk.recursive(ast, baseScope, null , refFindWalker); 
} 
; 
var simpleWalker = walk.make({ 
Function: function (node, _st, c){ 
c(node.body, node.body.scope, "ScopeBody"); 
} 
}
); 
exports.findPropRefs = function (ast, scope, objType, propName, f){ 
walk.simple(ast, { 
MemberExpression: function (node, scope){ 
if (node.computed || node.property.name != propName) return ; 
if (findType(node.object, scope).getType() == objType) f(node.property); 
} 
,
ObjectExpression: function (node, scope){ 
if (findType(node, scope).getType() != objType) return ; 
for (var i = 0; 
i < _AN_Read_length("length", node.properties); ++i)if (node.properties[i].key.name == propName) f(node.properties[i].key); 
} 
}
, simpleWalker, scope); 
} 
; 
var scopeAt = exports.scopeAt = function (ast, pos, defaultScope){ 
var found = walk.findNodeAround(ast, pos, function (tp, node){ 
return tp == "ScopeBody" && node.scope; 
} 
); 
if (found) return found.node.scope; 
 else return defaultScope || cx.topScope; 
} 
; 
exports.forAllLocalsAt = function (ast, pos, defaultScope, f){ 
var scope = scopeAt(ast, pos, defaultScope); 
scope.gatherProperties(f, 0); 
} 
; 
def = exports.def = _AN_Call_init("init", def, { 
}
, exports); 
} 
); 
(function (){ 
Object.create = Object.create || (function (){ 
if (!({ 
__proto__: null }
 instanceof Object)) return function (base){ 
return { 
__proto__: base}
; 
} 
; 
function ctor(){ 
} 
var frame = _AN_Call_appendchild("appendChild", document.body, _AN_Call_createelement("createElement", document, "iframe")); 
_AN_Write_src("src", frame, false , "javascript:"); 
var empty = frame.contentWindow.Object.prototype; 
delete empty.hasOwnProperty; 
delete empty.isPrototypeOf; 
delete empty.propertyIsEnumerable; 
delete empty.valueOf; 
delete empty.toString; 
delete empty.toLocaleString; 
delete empty.constructor; 
return function (base){ 
ctor.prototype = base || empty; 
return new ctor(); 
} 
; 
} 
)(); 
var AP = Array.prototype; 
AP.some = AP.some || function (pred){ 
for (var i = 0; 
i < _AN_Read_length("length", this); ++i)if (pred(this[i], i)) return true ; 
} 
; 
AP.forEach = AP.forEach || function (f){ 
for (var i = 0; 
i < _AN_Read_length("length", this); ++i)f(this[i], i); 
} 
; 
AP.indexOf = AP.indexOf || function (x, start){ 
for (var i = start || 0; 
i < _AN_Read_length("length", this); ++i)if (this[i] === x) return i; 
return -1; 
} 
; 
AP.lastIndexOf = AP.lastIndexOf || function (x, start){ 
for (var i = start == null ? _AN_Read_length("length", this) - 1: start; 
i >= 0; ++i)if (this[i] === x) return i; 
return -1; 
} 
; 
AP.map = AP.map || function (f){ 
for (var r = [] , i = 0; 
i < _AN_Read_length("length", this); ++i)r.push(f(this[i], i)); 
return r; 
} 
; 
Array.isArray = Array.isArray || function (v){ 
return Object.prototype.toString.call(v) == "[object Array]"; 
} 
; 
String.prototype.trim = String.prototype.trim || function (){ 
var from = 0, to = _AN_Read_length("length", this); 
while (/\s/.test(this.charAt(from)))++from; 
while (/\s/.test(this.charAt(to - 1)))--to; 
return this.slice(from, to); 
} 
; 
; 
(function (){ 
var e = void 0, i = true , k = null , l = { 
}
.toString, m, n, p = "function" === typeof define && define.c, q = !p && "object" == typeof exports && exports; 
q || p? "object" == typeof JSON && JSON? p? q = JSON: (q.stringify = JSON.stringify, q.parse = JSON.parse): p && (q = this.JSON = { 
}
): q = this.JSON || (this.JSON = { 
}
); 
var r, t, u, x, z, B, C, D, E, F, G, H, I, J = new Date(-3509827334573292), K, O, P; 
try { 
J = -109252 == J.getUTCFullYear() && 0 === J.getUTCMonth() && 1 == J.getUTCDate() && 10 == J.getUTCHours() && 37 == J.getUTCMinutes() && 6 == J.getUTCSeconds() && 708 == J.getUTCMilliseconds(); 
} 
catch (Q) { 
} 
function R(b){ 
var c, a, d, j = b == "json"; 
if (j || b == "json-stringify" || b == "json-parse") { 
if (b == "json-stringify" || j) { 
if (c = typeof q.stringify == "function" && J) { 
(d = function (){ 
return 1; 
} 
).toJSON = d; 
try { 
c = q.stringify(0) === "0" && q.stringify(new Number()) === "0" && q.stringify(new String()) == '""' && q.stringify(l) === e && q.stringify(e) === e && q.stringify() === e && q.stringify(d) === "1" && q.stringify([d] ) == "[1]" && q.stringify([e] ) == "[null]" && q.stringify(k) == "null" && q.stringify([e, l, k] ) == "[null,null,null]" && q.stringify({ 
A: [d, i, false , k, "\x00\u0008\n\u000c\r\t"] }
) == '{"A":[1,true,false,null,"\\u0000\\b\\n\\f\\r\\t"]}' && q.stringify(k, d) === "1" && q.stringify([1, 2] , k, 1) == "[\n 1,\n 2\n]" && q.stringify(new Date(-8640000000000000)) == '"-271821-04-20T00:00:00.000Z"' && q.stringify(new Date(8640000000000000)) == '"+275760-09-13T00:00:00.000Z"' && q.stringify(new Date(-62198755200000)) == '"-000001-01-01T00:00:00.000Z"' && q.stringify(new Date(-1)) == '"1969-12-31T23:59:59.999Z"'; 
} 
catch (f) { 
c = false ; 
} 
} 
if (!j) return c; 
} 
if (b == "json-parse" || j) { 
if (typeof q.parse == "function") try { 
if (q.parse("0") === 0 && !q.parse(false )) { 
d = q.parse('{"A":[1,true,false,null,"\\u0000\\b\\n\\f\\r\\t"]}'); 
if (a = _AN_Read_length('length', d.a) == 5 && d.a[0] == 1) { 
try { 
a = !q.parse('"\t"'); 
} 
catch (o) { 
} 
if (a) try { 
a = q.parse("01") != 1; 
} 
catch (g) { 
} 
} 
} 
} 
catch (h) { 
a = false ; 
} 
if (!j) return a; 
} 
return c && a; 
} 
} 
if (!R("json")) { 
J || (K = Math.floor, O = [0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334] , P = function (b, c){ 
return O[c] + 365 * (b - 1970) + K((b - 1969 + (c = + (c > 1))) / 4) - K((b - 1901 + c) / 100) + K((b - 1601 + c) / 400); 
} 
); 
if (!(m = { 
}
.hasOwnProperty)) m = function (b){ 
var c = { 
}
, a; 
if ((c.__proto__ = k, c.__proto__ = { 
toString: 1}
, c).toString != l) m = function (a){ 
var b = this.__proto__, a = a in (this.__proto__ = k, this); 
this.__proto__ = b; 
return a; 
} 
; 
 else { 
a = c.constructor; 
m = function (b){ 
var c = (this.constructor || a).prototype; 
return b in this && !(b in c && this[b] === c[b]); 
} 
; 
} 
c = k; 
return m.call(this, b); 
} 
; 
n = function (b, c){ 
var a = 0, d, j, f; 
(d = function (){ 
this.valueOf = 0; 
} 
).prototype.valueOf = 0; 
j = new d(); 
for (f in j)m.call(j, f) && a++ ; 
d = j = k; 
if (a) a = a == 2? function (a, b){ 
var c = { 
}
, d = l.call(a) == "[object Function]", f; 
for (f in a)!(d && f == "prototype") && !m.call(c, f) && (c[f] = 1) && m.call(a, f) && b(f); 
} 
: function (a, b){ 
var c = l.call(a) == "[object Function]", d, f; 
for (d in a)!(c && d == "prototype") && m.call(a, d) && !(f = d === "constructor") && b(d); 
(f || m.call(a, d = "constructor")) && b(d); 
} 
; 
 else { 
j = ["valueOf", "toString", "toLocaleString", "propertyIsEnumerable", "isPrototypeOf", "hasOwnProperty", "constructor"] ; 
a = function (a, b){ 
var c = l.call(a) == "[object Function]", d; 
for (d in a)!(c && d == "prototype") && m.call(a, d) && b(d); 
for (c = _AN_Read_length("length", j); d = j[--c]; m.call(a, d) && b(d)); 
} 
; 
} 
a(b, c); 
} 
; 
R("json-stringify") || (r = { 
"\\": "\\\\",
'"': '\\"',
"\u0008": "\\b",
"\u000c": "\\f",
"\n": "\\n",
"\r": "\\r",
"\t": "\\t"}
, t = function (b, c){ 
return ("000000" + (c || 0)).slice(- b); 
} 
, u = function (b){ 
for (var c = '"', a = 0, d; 
d = b.charAt(a); a++ )c = c + ('\\"\u0008\u000c\n\r\t'.indexOf(d) > -1? r[d]: r[d] = d < " "? "\\u00" + t(2, d.charCodeAt(0).toString(16)): d); 
return c + '"'; 
} 
, x = function (b, c, a, d, j, f, o){ 
var g = c[b], h, s, v, w, L, M, N, y, A; 
if (typeof g == "object" && g) { 
h = l.call(g); 
if (h == "[object Date]" && !m.call(g, "toJSON")) if (g > -1 / 0 && g < 1 / 0) { 
if (P) { 
v = K(g / 86400000); 
for (h = K(v / 365.2425) + 1970 - 1; P(h + 1, 0) <= v; h++ ); 
for (s = K((v - P(h, 0)) / 30.42); P(h, s + 1) <= v; s++ ); 
v = 1 + v - P(h, s); 
w = (g % 86400000 + 86400000) % 86400000; 
L = K(w / 3600000) % 24; 
M = K(w / 60000) % 60; 
N = K(w / 1000) % 60; 
w = w % 1000; 
} 
 else { 
h = g.getUTCFullYear(); 
s = g.getUTCMonth(); 
v = g.getUTCDate(); 
L = g.getUTCHours(); 
M = g.getUTCMinutes(); 
N = g.getUTCSeconds(); 
w = g.getUTCMilliseconds(); 
} 
g = (h <= 0 || h >= 10000? (h < 0? "-": "+") + t(6, h < 0? - h: h): t(4, h)) + "-" + t(2, s + 1) + "-" + t(2, v) + "T" + t(2, L) + ":" + t(2, M) + ":" + t(2, N) + "." + t(3, w) + "Z"; 
} 
 else g = k; 
 else if (typeof g.toJSON == "function" && (h != "[object Number]" && h != "[object String]" && h != "[object Array]" || m.call(g, "toJSON"))) g = g.toJSON(b); 
} 
a && (g = a.call(c, b, g)); 
if (g === k) return "null"; 
h = l.call(g); 
if (h == "[object Boolean]") return "" + g; 
if (h == "[object Number]") return g > -1 / 0 && g < 1 / 0? "" + g: "null"; 
if (h == "[object String]") return u(g); 
if (typeof g == "object") { 
for (b = _AN_Read_length("length", o); b-- ; )if (o[b] === g) throw TypeError()
o.push(g); 
y = [] ; 
c = f; 
f = f + j; 
if (h == "[object Array]") { 
s = 0; 
for (b = _AN_Read_length("length", g); s < b; A || (A = i), s++ ){ 
h = x(s, g, a, d, j, f, o); 
y.push(h === e? "null": h); 
} 
b = A? j? "[\n" + f + y.join(",\n" + f) + "\n" + c + "]": "[" + y.join(",") + "]": "[]"; 
} 
 else { 
n(d || g, function (b){ 
var c = x(b, g, a, d, j, f, o); 
c !== e && y.push(u(b) + ":" + (j? " ": "") + c); 
A || (A = i); 
} 
); 
b = A? j? "{\n" + f + y.join(",\n" + f) + "\n" + c + "}": "{" + y.join(",") + "}": "{}"; 
} 
o.pop(); 
return b; 
} 
} 
, q.stringify = function (b, c, a){ 
var d, j, f, o, g, h; 
if (typeof c == "function" || typeof c == "object" && c) if (l.call(c) == "[object Function]") j = c; 
 else if (l.call(c) == "[object Array]") { 
f = { 
}
; 
o = 0; 
for (g = _AN_Read_length("length", c); o < g; h = c[o++ ], (l.call(h) == "[object String]" || l.call(h) == "[object Number]") && (f[h] = 1)); 
} 
if (a) if (l.call(a) == "[object Number]") { 
if ((a = a - a % 1) > 0) { 
d = ""; 
for (a > 10 && (a = 10); _AN_Read_length("length", d) < a; d = d + " "); 
} 
} 
 else l.call(a) == "[object String]" && (d = _AN_Read_length("length", a) <= 10? a: a.slice(0, 10)); 
return x("", (h = { 
}
, h[""]  = b, h), j, f, d, "", [] ); 
} 
); 
R("json-parse") || (z = String.fromCharCode, B = { 
"\\": "\\",
'"': '"',
"/": "/",
b: "\u0008",
t: "\t",
n: "\n",
f: "\u000c",
r: "\r"}
, C = function (){ 
H = I = k; 
throw SyntaxError()
} 
, D = function (){ 
for (var b = I, c = _AN_Read_length("length", b), a, d, j, f, o; 
H < c; ){ 
a = b.charAt(H); 
if ("\t\r\n ".indexOf(a) > -1) H++ ; 
 else { 
if ("{}[]:,".indexOf(a) > -1) { 
H++ ; 
return a; 
} 
if (a == '"') { 
d = "@"; 
for (H++ ; H < c; ){ 
a = b.charAt(H); 
if (a < " ") C(); 
 else if (a == "\\") { 
a = b.charAt(++H); 
if ('\\"/btnfr'.indexOf(a) > -1) { 
d = d + B[a]; 
H++ ; 
} 
 else if (a == "u") { 
j = ++H; 
for (f = H + 4; H < f; H++ ){ 
a = b.charAt(H); 
a >= "0" && a <= "9" || a >= "a" && a <= "f" || a >= "A" && a <= "F" || C(); 
} 
d = d + z("0x" + b.slice(j, H)); 
} 
 else C(); 
} 
 else { 
if (a == '"') break ; 
d = d + a; 
H++ ; 
} 
} 
if (b.charAt(H) == '"') { 
H++ ; 
return d; 
} 
} 
 else { 
j = H; 
if (a == "-") { 
o = i; 
a = b.charAt(++H); 
} 
if (a >= "0" && a <= "9") { 
for (a == "0" && (a = b.charAt(H + 1), a >= "0" && a <= "9") && C(); H < c && (a = b.charAt(H), a >= "0" && a <= "9"); H++ ); 
if (b.charAt(H) == ".") { 
for (f = ++H; f < c && (a = b.charAt(f), a >= "0" && a <= "9"); f++ ); 
f == H && C(); 
H = f; 
} 
a = b.charAt(H); 
if (a == "e" || a == "E") { 
a = b.charAt(++H); 
(a == "+" || a == "-") && H++ ; 
for (f = H; f < c && (a = b.charAt(f), a >= "0" && a <= "9"); f++ ); 
f == H && C(); 
H = f; 
} 
return + b.slice(j, H); 
} 
o && C(); 
if (b.slice(H, H + 4) == "true") { 
H = H + 4; 
return i; 
} 
if (b.slice(H, H + 5) == "false") { 
H = H + 5; 
return false ; 
} 
if (b.slice(H, H + 4) == "null") { 
H = H + 4; 
return k; 
} 
} 
C(); 
} 
} 
return "$"; 
} 
, E = function (b){ 
var c, a; 
b == "$" && C(); 
if (typeof b == "string") { 
if (b.charAt(0) == "@") return b.slice(1); 
if (b == "[") { 
for (c = [] ; ; a || (a = i)){ 
b = D(); 
if (b == "]") break ; 
if (a) if (b == ",") { 
b = D(); 
b == "]" && C(); 
} 
 else C(); 
b == "," && C(); 
c.push(E(b)); 
} 
return c; 
} 
if (b == "{") { 
for (c = { 
}
; ; a || (a = i)){ 
b = D(); 
if (b == "}") break ; 
if (a) if (b == ",") { 
b = D(); 
b == "}" && C(); 
} 
 else C(); 
(b == "," || typeof b != "string" || b.charAt(0) != "@" || D() != ":") && C(); 
c[b.slice(1)] = E(D()); 
} 
return c; 
} 
C(); 
} 
return b; 
} 
, G = function (b, c, a){ 
a = F(b, c, a); 
a === e? delete b[c]: b[c] = a; 
} 
, F = function (b, c, a){ 
var d = b[c], j; 
if (typeof d == "object" && d) if (l.call(d) == "[object Array]") for (j = _AN_Read_length("length", d); j-- ; )G(d, j, a); 
 else n(d, function (b){ 
G(d, b, a); 
} 
); 
return a.call(b, c, d); 
} 
, q.parse = function (b, c){ 
var a, d; 
H = 0; 
I = b; 
a = E(D()); 
D() != "$" && C(); 
H = I = k; 
return c && l.call(c) == "[object Function]"? F((d = { 
}
, d[""]  = a, d), "", c): a; 
} 
); 
} 
p && define(function (){ 
return q; 
} 
); 
} 
()); 
} 
)(); 
(function (mod){ 
if (typeof exports == "object" && typeof module == "object") return mod(exports); 
if (typeof define == "function" && define.amd) return define(["exports"] , mod); 
mod((self.tern || (self.tern = { 
}
)).signal = { 
}
); 
} 
)(function (exports){ 
function on(type, f){ 
var handlers = this._handlers || (this._handlers = Object.create(null )); 
(handlers[type] || (handlers[type] = [] )).push(f); 
} 
function off(type, f){ 
var arr = this._handlers && this._handlers[type]; 
if (arr) for (var i = 0; 
i < _AN_Read_length("length", arr); ++i)if (arr[i] == f) { 
arr.splice(i, 1); 
break ; 
} 
} 
function signal(type, a1, a2, a3, a4){ 
var arr = this._handlers && this._handlers[type]; 
if (arr) for (var i = 0; 
i < _AN_Read_length("length", arr); ++i)arr[i].call(this, a1, a2, a3, a4); 
} 
exports.mixin = function (obj){ 
obj.on = on; 
obj.off = off; 
obj.signal = signal; 
return obj; 
} 
; 
} 
); 
(function (mod){ 
if (typeof exports == "object" && typeof module == "object") return mod(exports, require("./infer"), require("./signal"), require("acorn"), require("walk")); 
if (typeof define == "function" && define.amd) return define(["exports", "./infer", "./signal", "acorn", "walk"] , mod); 
mod(self.tern || (self.tern = { 
}
), tern, tern.signal, acorn, acorn.walk); 
} 
)(function (exports, infer, signal, acorn, walk){ 
"use strict"; 
var plugins = Object.create(null ); 
exports.registerPlugin = function (name, init){ 
plugins[name] = init; 
} 
; 
var defaultOptions = { 
debug: false ,
async: false ,
getFile: function (_f, c){ 
if (this.async) c(null , null ); 
} 
,
defs: [] ,
plugins: { 
}
,
fetchTimeout: 1000}
; 
var queryTypes = { 
completions: { 
takesFile: true ,
run: findCompletions}
,
properties: { 
run: findProperties}
,
type: { 
takesFile: true ,
run: findTypeAt}
,
documentation: { 
takesFile: true ,
run: findDocs}
,
definition: { 
takesFile: true ,
run: findDef}
,
refs: { 
takesFile: true ,
fullFile: true ,
run: findRefs}
,
rename: { 
takesFile: true ,
fullFile: true ,
run: buildRename}
,
files: { 
run: listFiles}
}
; 
exports.defineQueryType = function (name, desc){ 
queryTypes[name] = desc; 
} 
; 
function File(name){ 
this.name = name; 
this.scope = _AN_Write_text("text", this, false , this.ast = this.lineOffsets = null ); 
} 
File.prototype.asLineChar = function (pos){ 
return asLineChar(this, pos); 
} 
; 
function updateText(file, text, srv){ 
_AN_Write_text("text", file, false , text); 
file.ast = infer.parse(text, srv.passes, { 
directSourceFile: file}
); 
file.lineOffsets = null ; 
} 
var Server = exports.Server = function (options){ 
this.cx = null ; 
this.options = options || { 
}
; 
for (var o in defaultOptions)if (!options.hasOwnProperty(o)) options[o] = defaultOptions[o]; 
this.handlers = Object.create(null ); 
this.files = [] ; 
this.uses = 0; 
this.pending = 0; 
this.asyncError = null ; 
this.passes = Object.create(null ); 
this.defs = options.defs.slice(0); 
for (var plugin in options.plugins)if (options.plugins.hasOwnProperty(plugin) && plugin in plugins) { 
var init = plugins[plugin](this, options.plugins[plugin]); 
if (init && init.defs) { 
if (init.loadFirst) this.defs.unshift(init.defs); 
 else this.defs.push(init.defs); 
} 
if (init && init.passes) for (var type in init.passes)if (init.passes.hasOwnProperty(type)) (this.passes[type] || (this.passes[type] = [] )).push(init.passes[type]); 
} 
this.reset(); 
} 
; 
Server.prototype = signal.mixin({ 
addFile: function (name, text){ 
ensureFile(this, name, text); 
} 
,
delFile: function (name){ 
for (var i = 0, f; 
i < _AN_Read_length("length", this.files); ++i)if ((f = this.files[i]).name == name) { 
clearFile(this, f); 
this.files.splice(i-- , 1); 
return ; 
} 
} 
,
reset: function (){ 
this.signal("reset"); 
this.cx = new infer.Context(this.defs, this); 
this.uses = 0; 
for (var i = 0; 
i < _AN_Read_length("length", this.files); ++i){ 
var file = this.files[i]; 
file.scope = null ; 
} 
} 
,
request: function (doc, c){ 
var inv = invalidDoc(doc); 
if (inv) return c(inv); 
var self = this; 
doRequest(this, doc, function (err, data){ 
c(err, data); 
if (self.uses > 40) { 
self.reset(); 
analyzeAll(self, function (){ 
} 
); 
} 
} 
); 
} 
,
findFile: function (name){ 
return findFile(this.files, name); 
} 
,
flush: function (c){ 
var cx = this.cx; 
analyzeAll(this, function (err){ 
if (err) return c(err); 
infer.withContext(cx, c); 
} 
); 
} 
,
startAsyncAction: function (){ 
++this.pending; 
} 
,
finishAsyncAction: function (err){ 
if (err) this.asyncError = err; 
if (--this.pending == 0) this.signal("everythingFetched"); 
} 
}
); 
function doRequest(srv, doc, c){ 
if (doc.query && !queryTypes.hasOwnProperty(doc.query.type)) return c("No query type '" + doc.query.type + "' defined"); 
var query = doc.query; 
if (!query) c(null , { 
}
); 
var files = doc.files || [] ; 
if (files.length) ++srv.uses; 
for (var i = 0; 
i < _AN_Read_length("length", files); ++i){ 
var file = files[i]; 
ensureFile(srv, file.name, file.type == "full"? file.text: null ); 
} 
if (!query) { 
analyzeAll(srv, function (){ 
} 
); 
return ; 
} 
var queryType = queryTypes[query.type]; 
if (queryType.takesFile) { 
if (typeof query.file != "string") return c(".query.file must be a string"); 
if (!/^#/.test(query.file)) ensureFile(srv, query.file); 
} 
analyzeAll(srv, function (err){ 
if (err) return c(err); 
var file = queryType.takesFile && resolveFile(srv, files, query.file); 
if (queryType.fullFile && file.type == "part") return c("Can't run a " + query.type + " query on a file fragment"); 
infer.withContext(srv.cx, function (){ 
var result; 
try { 
result = queryType.run(srv, query, file); 
} 
catch (e) { 
if (srv.options.debug && e.name != "TernError") console.error(e.stack); 
return c(e); 
} 
c(null , result); 
} 
); 
} 
); 
} 
function analyzeFile(srv, file){ 
infer.withContext(srv.cx, function (){ 
file.scope = srv.cx.topScope; 
srv.signal("beforeLoad", file); 
infer.markVariablesDefinedBy(file.scope, file.name); 
infer.analyze(file.ast, file.name, file.scope, srv.passes); 
infer.purgeMarkedVariables(file.scope); 
srv.signal("afterLoad", file); 
} 
); 
return file; 
} 
function ensureFile(srv, name, text){ 
var known = findFile(srv.files, name); 
if (known) { 
if (text) clearFile(srv, known, text); 
return ; 
} 
var file = new File(name); 
srv.files.push(file); 
if (text) { 
updateText(file, text, srv); 
} 
 else if (srv.options.async) { 
srv.startAsyncAction(); 
srv.options.getFile(name, function (err, text){ 
updateText(file, text || "", srv); 
srv.finishAsyncAction(err); 
} 
); 
} 
 else { 
updateText(file, srv.options.getFile(name) || "", srv); 
} 
} 
function clearFile(srv, file, newText){ 
if (file.scope) { 
infer.withContext(srv.cx, function (){ 
infer.purgeTypes(file.name); 
infer.markVariablesDefinedBy(file.scope, file.name); 
infer.purgeMarkedVariables(file.scope); 
} 
); 
file.scope = null ; 
} 
if (newText != null ) updateText(file, newText, srv); 
} 
function fetchAll(srv, c){ 
var done = true , returned = false ; 
for (var i = 0; 
i < _AN_Read_length("length", srv.files); ++i){ 
var file = srv.files[i]; 
if (file.text != null ) continue ; 
if (srv.options.async) { 
done = false ; 
srv.options.getFile(file.name, function (err, text){ 
if (err && !returned) { 
returned = true ; 
return c(err); 
} 
updateText(file, text || "", srv); 
fetchAll(srv, c); 
} 
); 
} 
 else { 
try { 
updateText(file, srv.options.getFile(file.name) || "", srv); 
} 
catch (e) { 
return c(e); 
} 
} 
} 
if (done) c(); 
} 
function waitOnFetch(srv, c){ 
var done = function (){ 
srv.off("everythingFetched", done); 
clearTimeout(timeout); 
analyzeAll(srv, c); 
} 
; 
srv.on("everythingFetched", done); 
var timeout = _AN_Call_settimeout("setTimeout", window, done, srv.options.fetchTimeout); 
} 
function analyzeAll(srv, c){ 
if (srv.pending) return waitOnFetch(srv, c); 
var e = srv.fetchError; 
if (e) { 
srv.fetchError = null ; 
return c(e); 
} 
var done = true ; 
for (var i = 0; 
i < _AN_Read_length("length", srv.files); ++i){ 
var file = srv.files[i]; 
if (file.text == null ) done = false ; 
 else if (file.scope == null ) analyzeFile(srv, file); 
} 
if (done) c(); 
 else waitOnFetch(srv, c); 
} 
function findFile(arr, name){ 
for (var i = 0; 
i < _AN_Read_length("length", arr); ++i){ 
var file = arr[i]; 
if (file.name == name && file.type != "part") return file; 
} 
} 
function firstLine(str){ 
var end = str.indexOf("\n"); 
if (end < 0) return str; 
return str.slice(0, end); 
} 
function findMatchingPosition(line, file, near){ 
var pos = Math.max(0, near - 500), closest = null ; 
if (!/^\s*$/.test(line)) for (; ; ){ 
var found = file.indexOf(line, pos); 
if (found < 0 || found > near + 500) break ; 
if (closest == null  || Math.abs(closest - near) > Math.abs(found - near)) closest = found; 
pos = found + _AN_Read_length("length", line); 
} 
return closest; 
} 
function scopeDepth(s){ 
for (var i = 0; 
s; ++i, s = s.prev){ 
} 
return i; 
} 
function ternError(msg){ 
var err = new Error(msg); 
err.name = "TernError"; 
return err; 
} 
function resolveFile(srv, localFiles, name){ 
var isRef = name.match(/^#(\d+)$/); 
if (!isRef) return findFile(srv.files, name); 
var file = localFiles[isRef[1]]; 
if (!file) throw ternError("Reference to unknown file " + name)
if (file.type == "full") return findFile(srv.files, file.name); 
var realFile = file.backing = findFile(srv.files, file.name); 
var offset = file.offset; 
if (file.offsetLines) offset = { 
line: file.offsetLines,
ch: 0}
; 
file.offset = offset = resolvePos(realFile, file.offsetLines == null ? file.offset: { 
line: file.offsetLines,
ch: 0}
, true ); 
var line = firstLine(file.text); 
var foundPos = findMatchingPosition(line, realFile.text, offset); 
var pos = foundPos == null ? Math.max(0, realFile.text.lastIndexOf("\n", offset)): foundPos; 
infer.withContext(srv.cx, function (){ 
infer.purgeTypes(file.name, pos, pos + _AN_Read_length("length", file.text)); 
var text = file.text, m; 
if (m = text.match(/(?:"([^"]*)"|([\w$]+))\s*:\s*function\b/)) { 
var objNode = walk.findNodeAround(file.backing.ast, pos, "ObjectExpression"); 
if (objNode && objNode.node.objType) var inObject = { 
type: objNode.node.objType,
prop: m[2] || m[1]}
; 
} 
if (foundPos && (m = line.match(/^(.*?)\bfunction\b/))) { 
var cut = _AN_Read_length("length", m[1]), white = ""; 
for (var i = 0; 
i < cut; ++i)white += " "; 
text = white + text.slice(cut); 
var atFunction = true ; 
} 
var scopeStart = infer.scopeAt(realFile.ast, pos, realFile.scope); 
var scopeEnd = infer.scopeAt(realFile.ast, pos + _AN_Read_length("length", text), realFile.scope); 
var scope = file.scope = scopeDepth(scopeStart) < scopeDepth(scopeEnd)? scopeEnd: scopeStart; 
infer.markVariablesDefinedBy(scopeStart, file.name, pos, pos + _AN_Read_length("length", file.text)); 
file.ast = infer.parse(file.text, srv.passes, { 
directSourceFile: file}
); 
infer.analyze(file.ast, file.name, scope, srv.passes); 
infer.purgeMarkedVariables(scopeStart); 
tieTogether: if (inObject || atFunction) { 
var newInner = infer.scopeAt(file.ast, _AN_Read_length("length", line), scopeStart); 
if (!newInner.fnType) break tieTogether; 
if (inObject) { 
var prop = inObject.type.getProp(inObject.prop); 
prop.addType(newInner.fnType); 
} 
 else if (atFunction) { 
var inner = infer.scopeAt(realFile.ast, pos + _AN_Read_length("length", line), realFile.scope); 
if (inner == scopeStart || !inner.fnType) break tieTogether; 
var fOld = inner.fnType, fNew = newInner.fnType; 
if (!fNew || (fNew.name != fOld.name && fOld.name)) break tieTogether; 
for (var i = 0, e = Math.min(_AN_Read_length("length", fOld.args), _AN_Read_length("length", fNew.args)); 
i < e; ++i)fOld.args[i].propagate(fNew.args[i]); 
fOld.self.propagate(fNew.self); 
fNew.retval.propagate(fOld.retval); 
} 
} 
} 
); 
return file; 
} 
function isPosition(val){ 
return typeof val == "number" || typeof val == "object" && typeof val.line == "number" && typeof val.ch == "number"; 
} 
function invalidDoc(doc){ 
if (doc.query) { 
if (typeof doc.query.type != "string") return ".query.type must be a string"; 
if (doc.query.start && !isPosition(doc.query.start)) return ".query.start must be a position"; 
if (doc.query.end && !isPosition(doc.query.end)) return ".query.end must be a position"; 
} 
if (doc.files) { 
if (!Array.isArray(doc.files)) return "Files property must be an array"; 
for (var i = 0; 
i < _AN_Read_length("length", doc.files); ++i){ 
var file = doc.files[i]; 
if (typeof file != "object") return ".files[n] must be objects"; 
 else if (typeof file.text != "string") return ".files[n].text must be a string"; 
 else if (typeof file.name != "string") return ".files[n].name must be a string"; 
 else if (file.type == "part") { 
if (!isPosition(file.offset) && typeof file.offsetLines != "number") return ".files[n].offset must be a position"; 
} 
 else if (file.type != "full") return ".files[n].type must be \"full\" or \"part\""; 
} 
} 
} 
var offsetSkipLines = 25; 
function findLineStart(file, line){ 
var text = file.text, offsets = file.lineOffsets || (file.lineOffsets = [0] ); 
var pos = 0, curLine = 0; 
var storePos = Math.min(Math.floor(line / offsetSkipLines), _AN_Read_length("length", offsets) - 1); 
var pos = offsets[storePos], curLine = storePos * offsetSkipLines; 
while (curLine < line){ 
++curLine; 
pos = text.indexOf("\n", pos) + 1; 
if (pos == 0) return null ; 
if (curLine % offsetSkipLines == 0) offsets.push(pos); 
} 
return pos; 
} 
function resolvePos(file, pos, tolerant){ 
if (typeof pos != "number") { 
var lineStart = findLineStart(file, pos.line); 
if (lineStart == null ) { 
if (tolerant) pos = _AN_Read_length("length", file.text); 
 else throw ternError("File doesn't contain a line " + pos.line)
} 
 else { 
pos = lineStart + pos.ch; 
} 
} 
if (pos > _AN_Read_length("length", file.text)) { 
if (tolerant) pos = _AN_Read_length("length", file.text); 
 else throw ternError("Position " + pos + " is outside of file.")
} 
return pos; 
} 
function asLineChar(file, pos){ 
if (!file) return { 
line: 0,
ch: 0}
; 
var offsets = file.lineOffsets || (file.lineOffsets = [0] ); 
var text = file.text, line, lineStart; 
for (var i = _AN_Read_length("length", offsets) - 1; 
i >= 0; --i)if (offsets[i] <= pos) { 
line = i * offsetSkipLines; 
lineStart = offsets[i]; 
} 
for (; ; ){ 
var eol = text.indexOf("\n", lineStart); 
if (eol >= pos || eol < 0) break ; 
lineStart = eol + 1; 
++line; 
} 
return { 
line: line,
ch: pos - lineStart}
; 
} 
function outputPos(query, file, pos){ 
if (query.lineCharPositions) { 
var out = asLineChar(file, pos); 
if (file.type == "part") out.line += file.offsetLines != null ? file.offsetLines: asLineChar(file.backing, file.offset).line; 
return out; 
} 
 else { 
return pos + (file.type == "part"? file.offset: 0); 
} 
} 
function clean(obj){ 
for (var prop in obj)if (obj[prop] == null ) delete obj[prop]; 
return obj; 
} 
function maybeSet(obj, prop, val){ 
if (val != null ) obj[prop] = val; 
} 
function compareCompletions(a, b){ 
if (typeof a != "string") { 
a = a.name; 
b = b.name; 
} 
var aUp = /^[A-Z]/.test(a), bUp = /^[A-Z]/.test(b); 
if (aUp == bUp) return a < b? -1: a == b? 0: 1; 
 else return aUp? 1: -1; 
} 
function isStringAround(node, start, end){ 
return node.type == "Literal" && typeof node.value == "string" && node.start == start - 1 && node.end <= end + 1; 
} 
function findCompletions(srv, query, file){ 
if (query.end == null ) throw ternError("missing .query.end field")
var wordStart = resolvePos(file, query.end), wordEnd = wordStart, text = file.text; 
while (wordStart && acorn.isIdentifierChar(text.charCodeAt(wordStart - 1)))--wordStart; 
if (query.expandWordForward !== false ) while (wordEnd < _AN_Read_length("length", text) && acorn.isIdentifierChar(text.charCodeAt(wordEnd)))++wordEnd; 
var word = text.slice(wordStart, wordEnd), completions = [] ; 
if (query.caseInsensitive) word = word.toLowerCase(); 
var wrapAsObjs = query.types || query.depths || query.docs || query.urls || query.origins; 
function gather(prop, obj, depth){ 
if (query.omitObjectPrototype !== false  && obj == srv.cx.protos.Object && !word) return ; 
if (query.filter !== false  && word && (query.caseInsensitive? prop.toLowerCase(): prop).indexOf(word) != 0) return ; 
for (var i = 0; 
i < _AN_Read_length("length", completions); ++i){ 
var c = completions[i]; 
if ((wrapAsObjs? c.name: c) == prop) return ; 
} 
var rec = wrapAsObjs? { 
name: prop}
: prop; 
completions.push(rec); 
if (query.types || query.docs || query.urls || query.origins) { 
var val = obj? obj.props[prop]: infer.ANull; 
infer.resetGuessing(); 
var type = val.getType(); 
rec.guess = infer.didGuess(); 
if (query.types) rec.type = infer.toString(type); 
if (query.docs) maybeSet(rec, "doc", val.doc || type && type.doc); 
if (query.urls) maybeSet(rec, "url", _AN_Read_url("url", val) || type && _AN_Read_url("url", type)); 
if (query.origins) maybeSet(rec, "origin", val.origin || type && type.origin); 
} 
if (query.depths) rec.depth = depth; 
} 
var memberExpr = infer.findExpressionAround(file.ast, null , wordStart, file.scope, "MemberExpression"); 
if (memberExpr && (memberExpr.node.computed? isStringAround(memberExpr.node.property, wordStart, wordEnd): memberExpr.node.object.end < wordStart)) { 
var prop = memberExpr.node.property; 
prop = prop.type == "Literal"? prop.value.slice(1): prop.name; 
memberExpr.node = memberExpr.node.object; 
var tp = infer.expressionType(memberExpr); 
if (tp) infer.forAllPropertiesOf(tp, gather); 
if (!_AN_Read_length("length", completions) && query.guess !== false  && tp && tp.guessProperties) { 
tp.guessProperties(function (p, o, d){ 
if (p != prop && p != "✖") gather(p, o, d); 
} 
); 
} 
if (!_AN_Read_length("length", completions) && _AN_Read_length("length", word) >= 2 && query.guess !== false ) for (var prop in srv.cx.props)gather(prop, srv.cx.props[prop][0], 0); 
} 
 else { 
infer.forAllLocalsAt(file.ast, wordStart, file.scope, gather); 
} 
if (query.sort !== false ) completions.sort(compareCompletions); 
return { 
start: outputPos(query, file, wordStart),
end: outputPos(query, file, wordEnd),
completions: completions}
; 
} 
function findProperties(srv, query){ 
var prefix = query.prefix, found = [] ; 
for (var prop in srv.cx.props)if (prop != "<i>" && (!prefix || prop.indexOf(prefix) == 0)) found.push(prop); 
if (query.sort !== false ) found.sort(compareCompletions); 
return { 
completions: found}
; 
} 
var findExpr = exports.findQueryExpr = function (file, query, wide){ 
if (query.end == null ) throw ternError("missing .query.end field")
if (query.variable) { 
var scope = infer.scopeAt(file.ast, resolvePos(file, query.end), file.scope); 
return { 
node: { 
type: "Identifier",
name: query.variable,
start: query.end,
end: query.end + 1}
,
state: scope}
; 
} 
 else { 
var start = query.start && resolvePos(file, query.start), end = resolvePos(file, query.end); 
var expr = infer.findExpressionAt(file.ast, start, end, file.scope); 
if (expr) return expr; 
expr = infer.findExpressionAround(file.ast, start, end, file.scope); 
if (expr && (wide || (start == null ? end: start) - expr.node.start < 20 || expr.node.end - end < 20)) return expr; 
throw ternError("No expression at the given position.")
} 
} 
; 
function findTypeAt(_srv, query, file){ 
var expr = findExpr(file, query); 
infer.resetGuessing(); 
var type = infer.expressionType(expr); 
if (query.preferFunction) type = type.getFunctionType() || type.getType(); 
 else type = type.getType(); 
if (expr.node.type == "Identifier") var exprName = expr.node.name; 
 else if (expr.node.type == "MemberExpression" && !expr.node.computed) var exprName = expr.node.property.name; 
if (query.depth != null  && typeof query.depth != "number") throw ternError(".query.depth must be a number")
var result = { 
guess: infer.didGuess(),
type: infer.toString(type, query.depth),
name: type && type.name,
exprName: exprName}
; 
if (type) storeTypeDocs(type, result); 
return clean(result); 
} 
function findDocs(_srv, query, file){ 
var expr = findExpr(file, query); 
var type = infer.expressionType(expr); 
var result = { 
url: _AN_Read_url("url", type),
doc: type.doc}
; 
var inner = type.getType(); 
if (inner) storeTypeDocs(inner, result); 
return clean(result); 
} 
function storeTypeDocs(type, out){ 
if (!_AN_Read_url("url", out)) _AN_Write_url("url", out, false , _AN_Read_url("url", type)); 
if (!out.doc) out.doc = type.doc; 
if (!out.origin) out.origin = type.origin; 
var ctor, boring = infer.cx().protos; 
if (!_AN_Read_url("url", out) && !out.doc && type.proto && (ctor = type.proto.hasCtor) && type.proto != boring.Object && type.proto != boring.Function && type.proto != boring.Array) { 
_AN_Write_url("url", out, false , _AN_Read_url("url", ctor)); 
out.doc = ctor.doc; 
} 
} 
var getSpan = exports.getSpan = function (obj){ 
if (!obj.origin) return ; 
if (obj.originNode) { 
var node = obj.originNode; 
if (/^Function/.test(node.type) && node.id) node = node.id; 
return { 
origin: obj.origin,
node: node}
; 
} 
if (obj.span) return { 
origin: obj.origin,
span: obj.span}
; 
} 
; 
var storeSpan = exports.storeSpan = function (srv, query, span, target){ 
target.origin = span.origin; 
if (span.span) { 
var m = /^(\d+)\[(\d+):(\d+)\]-(\d+)\[(\d+):(\d+)\]$/.exec(span.span); 
target.start = query.lineCharPositions? { 
line: Number(m[2]),
ch: Number(m[3])}
: Number(m[1]); 
target.end = query.lineCharPositions? { 
line: Number(m[5]),
ch: Number(m[6])}
: Number(m[4]); 
} 
 else { 
var file = findFile(srv.files, span.origin); 
target.start = outputPos(query, file, span.node.start); 
target.end = outputPos(query, file, span.node.end); 
} 
} 
; 
function findDef(srv, query, file){ 
var expr = findExpr(file, query); 
infer.resetGuessing(); 
var type = infer.expressionType(expr); 
if (infer.didGuess()) return { 
}
; 
var span = getSpan(type); 
var result = { 
url: _AN_Read_url("url", type),
doc: type.doc,
origin: type.origin}
; 
if (type.types) for (var i = _AN_Read_length("length", type.types) - 1; 
i >= 0; --i){ 
var tp = type.types[i]; 
storeTypeDocs(tp, result); 
if (!span) span = getSpan(tp); 
} 
if (span && span.node) { 
var spanFile = span.node.sourceFile || findFile(srv.files, span.origin); 
var start = outputPos(query, spanFile, span.node.start), end = outputPos(query, spanFile, span.node.end); 
result.start = start; 
result.end = end; 
result.file = span.origin; 
var cxStart = Math.max(0, span.node.start - 50); 
result.contextOffset = span.node.start - cxStart; 
result.context = spanFile.text.slice(cxStart, cxStart + 50); 
} 
 else if (span) { 
result.file = span.origin; 
storeSpan(srv, query, span, result); 
} 
return clean(result); 
} 
function findRefsToVariable(srv, query, file, expr, checkShadowing){ 
var name = expr.node.name; 
for (var scope = expr.state; 
scope && !(name in scope.props); scope = scope.prev){ 
} 
if (!scope) throw ternError("Could not find a definition for " + name + " " + !!srv.cx.topScope.props.x)
var type, refs = [] ; 
function storeRef(file){ 
return function (node, scopeHere){ 
if (checkShadowing) for (var s = scopeHere; 
s != scope; s = s.prev){ 
var exists = s.hasProp(checkShadowing); 
if (exists) throw ternError("Renaming `" + name + "` to `" + checkShadowing + "` would make a variable at line " + (asLineChar(file, node.start).line + 1) + " point to the definition at line " + (asLineChar(file, exists.name.start).line + 1))
} 
refs.push({ 
file: file.name,
start: outputPos(query, file, node.start),
end: outputPos(query, file, node.end)}
); 
} 
; 
} 
if (scope.node) { 
type = "local"; 
if (checkShadowing) { 
for (var prev = scope.prev; 
prev; prev = prev.prev)if (checkShadowing in prev.props) break ; 
if (prev) infer.findRefs(scope.node, scope, checkShadowing, prev, function (node){ 
throw ternError("Renaming `" + name + "` to `" + checkShadowing + "` would shadow the definition used at line " + (asLineChar(file, node.start).line + 1))
} 
); 
} 
infer.findRefs(scope.node, scope, name, scope, storeRef(file)); 
} 
 else { 
type = "global"; 
for (var i = 0; 
i < _AN_Read_length("length", srv.files); ++i){ 
var cur = srv.files[i]; 
infer.findRefs(cur.ast, cur.scope, name, scope, storeRef(cur)); 
} 
} 
return { 
refs: refs,
type: type,
name: name}
; 
} 
function findRefsToProperty(srv, query, expr, prop){ 
var objType = infer.expressionType(expr).getType(); 
if (!objType) throw ternError("Couldn't determine type of base object.")
var refs = [] ; 
function storeRef(file){ 
return function (node){ 
refs.push({ 
file: file.name,
start: outputPos(query, file, node.start),
end: outputPos(query, file, node.end)}
); 
} 
; 
} 
for (var i = 0; 
i < _AN_Read_length("length", srv.files); ++i){ 
var cur = srv.files[i]; 
infer.findPropRefs(cur.ast, cur.scope, objType, prop.name, storeRef(cur)); 
} 
return { 
refs: refs,
name: prop.name}
; 
} 
function findRefs(srv, query, file){ 
var expr = findExpr(file, query, true ); 
if (expr && expr.node.type == "Identifier") { 
return findRefsToVariable(srv, query, file, expr); 
} 
 else if (expr && expr.node.type == "MemberExpression" && !expr.node.computed) { 
var p = expr.node.property; 
expr.node = expr.node.object; 
return findRefsToProperty(srv, query, expr, p); 
} 
 else if (expr && expr.node.type == "ObjectExpression") { 
var pos = resolvePos(file, query.end); 
for (var i = 0; 
i < _AN_Read_length("length", expr.node.properties); ++i){ 
var k = expr.node.properties[i].key; 
if (k.start <= pos && k.end >= pos) return findRefsToProperty(srv, query, expr, k); 
} 
} 
throw ternError("Not at a variable or property name.")
} 
function buildRename(srv, query, file){ 
if (typeof query.newName != "string") throw ternError(".query.newName should be a string")
var expr = findExpr(file, query); 
if (!expr || expr.node.type != "Identifier") throw ternError("Not at a variable.")
var data = findRefsToVariable(srv, query, file, expr, query.newName), refs = data.refs; 
delete data.refs; 
data.files = srv.files.map(function (f){ 
return f.name; 
} 
); 
var changes = data.changes = [] ; 
for (var i = 0; 
i < _AN_Read_length("length", refs); ++i){ 
var use = refs[i]; 
_AN_Write_text("text", use, false , query.newName); 
changes.push(use); 
} 
return data; 
} 
function listFiles(srv){ 
return { 
files: srv.files.map(function (f){ 
return f.name; 
} 
)}
; 
} 
exports.version = "0.5.1"; 
} 
); 
(function (mod){ 
if (typeof exports == "object" && typeof module == "object") return mod(exports); 
if (typeof define == "function" && define.amd) return define(["exports"] , mod); 
mod((this.acorn || (this.acorn = { 
}
)).walk = { 
}
); 
} 
)(function (exports){ 
"use strict"; 
exports.simple = function (node, visitors, base, state){ 
if (!base) base = exports.base; 
function c(node, st, override){ 
var type = override || node.type, found = visitors[type]; 
base[type](node, st, c); 
if (found) found(node, st); 
} 
c(node, state); 
} 
; 
exports.recursive = function (node, state, funcs, base){ 
var visitor = funcs? exports.make(funcs, base): base; 
function c(node, st, override){ 
visitor[override || node.type](node, st, c); 
} 
c(node, state); 
} 
; 
function makeTest(test){ 
if (typeof test == "string") return function (type){ 
return type == test; 
} 
; 
 else if (!test) return function (){ 
return true ; 
} 
; 
 else return test; 
} 
function Found(node, state){ 
this.node = node; 
this.state = state; 
} 
exports.findNodeAt = function (node, start, end, test, base, state){ 
test = makeTest(test); 
try { 
if (!base) base = exports.base; 
var c = function (node, st, override){ 
var type = override || node.type; 
if ((start == null  || node.start <= start) && (end == null  || node.end >= end)) base[type](node, st, c); 
if (test(type, node) && (start == null  || node.start == start) && (end == null  || node.end == end)) throw new Found(node, st)
} 
; 
c(node, state); 
} 
catch (e) { 
if (e instanceof Found) return e; 
throw e
} 
} 
; 
exports.findNodeAround = function (node, pos, test, base, state){ 
test = makeTest(test); 
try { 
if (!base) base = exports.base; 
var c = function (node, st, override){ 
var type = override || node.type; 
if (node.start > pos || node.end < pos) return ; 
base[type](node, st, c); 
if (test(type, node)) throw new Found(node, st)
} 
; 
c(node, state); 
} 
catch (e) { 
if (e instanceof Found) return e; 
throw e
} 
} 
; 
exports.findNodeAfter = function (node, pos, test, base, state){ 
test = makeTest(test); 
try { 
if (!base) base = exports.base; 
var c = function (node, st, override){ 
if (node.end < pos) return ; 
var type = override || node.type; 
if (node.start >= pos && test(type, node)) throw new Found(node, st)
base[type](node, st, c); 
} 
; 
c(node, state); 
} 
catch (e) { 
if (e instanceof Found) return e; 
throw e
} 
} 
; 
exports.findNodeBefore = function (node, pos, test, base, state){ 
test = makeTest(test); 
if (!base) base = exports.base; 
var max; 
var c = function (node, st, override){ 
if (node.start > pos) return ; 
var type = override || node.type; 
if (node.end <= pos && (!max || max.node.end < node.end) && test(type, node)) max = new Found(node, st); 
base[type](node, st, c); 
} 
; 
c(node, state); 
return max; 
} 
; 
exports.make = function (funcs, base){ 
if (!base) base = exports.base; 
var visitor = { 
}
; 
for (var type in base)visitor[type] = base[type]; 
for (var type in funcs)visitor[type] = funcs[type]; 
return visitor; 
} 
; 
function skipThrough(node, st, c){ 
c(node, st); 
} 
function ignore(_node, _st, _c){ 
} 
var base = exports.base = { 
}
; 
base.Program = base.BlockStatement = function (node, st, c){ 
for (var i = 0; 
i < _AN_Read_length("length", node.body); ++i)c(node.body[i], st, "Statement"); 
} 
; 
base.Statement = skipThrough; 
base.EmptyStatement = ignore; 
base.ExpressionStatement = function (node, st, c){ 
c(node.expression, st, "Expression"); 
} 
; 
base.IfStatement = function (node, st, c){ 
c(node.test, st, "Expression"); 
c(node.consequent, st, "Statement"); 
if (node.alternate) c(node.alternate, st, "Statement"); 
} 
; 
base.LabeledStatement = function (node, st, c){ 
c(node.body, st, "Statement"); 
} 
; 
base.BreakStatement = base.ContinueStatement = ignore; 
base.WithStatement = function (node, st, c){ 
c(node.object, st, "Expression"); 
c(node.body, st, "Statement"); 
} 
; 
base.SwitchStatement = function (node, st, c){ 
c(node.discriminant, st, "Expression"); 
for (var i = 0; 
i < _AN_Read_length("length", node.cases); ++i){ 
var cs = node.cases[i]; 
if (cs.test) c(cs.test, st, "Expression"); 
for (var j = 0; 
j < _AN_Read_length("length", cs.consequent); ++j)c(cs.consequent[j], st, "Statement"); 
} 
} 
; 
base.ReturnStatement = function (node, st, c){ 
if (node.argument) c(node.argument, st, "Expression"); 
} 
; 
base.ThrowStatement = function (node, st, c){ 
c(node.argument, st, "Expression"); 
} 
; 
base.TryStatement = function (node, st, c){ 
c(node.block, st, "Statement"); 
if (node.handler) c(node.handler.body, st, "ScopeBody"); 
if (node.finalizer) c(node.finalizer, st, "Statement"); 
} 
; 
base.WhileStatement = function (node, st, c){ 
c(node.test, st, "Expression"); 
c(node.body, st, "Statement"); 
} 
; 
base.DoWhileStatement = base.WhileStatement; 
base.ForStatement = function (node, st, c){ 
if (node.init) c(node.init, st, "ForInit"); 
if (node.test) c(node.test, st, "Expression"); 
if (node.update) c(node.update, st, "Expression"); 
c(node.body, st, "Statement"); 
} 
; 
base.ForInStatement = function (node, st, c){ 
c(node.left, st, "ForInit"); 
c(node.right, st, "Expression"); 
c(node.body, st, "Statement"); 
} 
; 
base.ForInit = function (node, st, c){ 
if (node.type == "VariableDeclaration") c(node, st); 
 else c(node, st, "Expression"); 
} 
; 
base.DebuggerStatement = ignore; 
base.FunctionDeclaration = function (node, st, c){ 
c(node, st, "Function"); 
} 
; 
base.VariableDeclaration = function (node, st, c){ 
for (var i = 0; 
i < _AN_Read_length("length", node.declarations); ++i){ 
var decl = node.declarations[i]; 
if (decl.init) c(decl.init, st, "Expression"); 
} 
} 
; 
base.Function = function (node, st, c){ 
c(node.body, st, "ScopeBody"); 
} 
; 
base.ScopeBody = function (node, st, c){ 
c(node, st, "Statement"); 
} 
; 
base.Expression = skipThrough; 
base.ThisExpression = ignore; 
base.ArrayExpression = function (node, st, c){ 
for (var i = 0; 
i < _AN_Read_length("length", node.elements); ++i){ 
var elt = node.elements[i]; 
if (elt) c(elt, st, "Expression"); 
} 
} 
; 
base.ObjectExpression = function (node, st, c){ 
for (var i = 0; 
i < _AN_Read_length("length", node.properties); ++i)c(node.properties[i].value, st, "Expression"); 
} 
; 
base.FunctionExpression = base.FunctionDeclaration; 
base.SequenceExpression = function (node, st, c){ 
for (var i = 0; 
i < _AN_Read_length("length", node.expressions); ++i)c(node.expressions[i], st, "Expression"); 
} 
; 
base.UnaryExpression = base.UpdateExpression = function (node, st, c){ 
c(node.argument, st, "Expression"); 
} 
; 
base.BinaryExpression = base.AssignmentExpression = base.LogicalExpression = function (node, st, c){ 
c(node.left, st, "Expression"); 
c(node.right, st, "Expression"); 
} 
; 
base.ConditionalExpression = function (node, st, c){ 
c(node.test, st, "Expression"); 
c(node.consequent, st, "Expression"); 
c(node.alternate, st, "Expression"); 
} 
; 
base.NewExpression = base.CallExpression = function (node, st, c){ 
c(node.callee, st, "Expression"); 
if (node.arguments) for (var i = 0; 
i < _AN_Read_length("length", node.arguments); ++i)c(node.arguments[i], st, "Expression"); 
} 
; 
base.MemberExpression = function (node, st, c){ 
c(node.object, st, "Expression"); 
if (node.computed) c(node.property, st, "Expression"); 
} 
; 
base.Identifier = base.Literal = ignore; 
function makeScope(prev, isCatch){ 
return { 
vars: Object.create(null ),
prev: prev,
isCatch: isCatch}
; 
} 
function normalScope(scope){ 
while (scope.isCatch)scope = scope.prev; 
return scope; 
} 
exports.scopeVisitor = exports.make({ 
Function: function (node, scope, c){ 
var inner = makeScope(scope); 
for (var i = 0; 
i < _AN_Read_length("length", node.params); ++i)inner.vars[node.params[i].name] = { 
type: "argument",
node: node.params[i]}
; 
if (node.id) { 
var decl = node.type == "FunctionDeclaration"; 
(decl? normalScope(scope): inner).vars[node.id.name] = { 
type: decl? "function": "function name",
node: node.id}
; 
} 
c(node.body, inner, "ScopeBody"); 
} 
,
TryStatement: function (node, scope, c){ 
c(node.block, scope, "Statement"); 
if (node.handler) { 
var inner = makeScope(scope, true ); 
inner.vars[node.handler.param.name] = { 
type: "catch clause",
node: node.handler.param}
; 
c(node.handler.body, inner, "ScopeBody"); 
} 
if (node.finalizer) c(node.finalizer, scope, "Statement"); 
} 
,
VariableDeclaration: function (node, scope, c){ 
var target = normalScope(scope); 
for (var i = 0; 
i < _AN_Read_length("length", node.declarations); ++i){ 
var decl = node.declarations[i]; 
target.vars[decl.id.name] = { 
type: "var",
node: decl.id}
; 
if (decl.init) c(decl.init, scope, "Expression"); 
} 
} 
}
); 
} 
);