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xapicollection.js
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xapicollection.js
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/* parser generated by jison 0.4.13 */
/*
Returns a Parser object of the following structure:
Parser: {
yy: {}
}
Parser.prototype: {
yy: {},
trace: function(),
symbols_: {associative list: name ==> number},
terminals_: {associative list: number ==> name},
productions_: [...],
performAction: function anonymous(yytext, yyleng, yylineno, yy, yystate, $$, _$),
table: [...],
defaultActions: {...},
parseError: function(str, hash),
parse: function(input),
lexer: {
EOF: 1,
parseError: function(str, hash),
setInput: function(input),
input: function(),
unput: function(str),
more: function(),
less: function(n),
pastInput: function(),
upcomingInput: function(),
showPosition: function(),
test_match: function(regex_match_array, rule_index),
next: function(),
lex: function(),
begin: function(condition),
popState: function(),
_currentRules: function(),
topState: function(),
pushState: function(condition),
options: {
ranges: boolean (optional: true ==> token location info will include a .range[] member)
flex: boolean (optional: true ==> flex-like lexing behaviour where the rules are tested exhaustively to find the longest match)
backtrack_lexer: boolean (optional: true ==> lexer regexes are tested in order and for each matching regex the action code is invoked; the lexer terminates the scan when a token is returned by the action code)
},
performAction: function(yy, yy_, $avoiding_name_collisions, YY_START),
rules: [...],
conditions: {associative list: name ==> set},
}
}
token location info (@$, _$, etc.): {
first_line: n,
last_line: n,
first_column: n,
last_column: n,
range: [start_number, end_number] (where the numbers are indexes into the input string, regular zero-based)
}
the parseError function receives a 'hash' object with these members for lexer and parser errors: {
text: (matched text)
token: (the produced terminal token, if any)
line: (yylineno)
}
while parser (grammar) errors will also provide these members, i.e. parser errors deliver a superset of attributes: {
loc: (yylloc)
expected: (string describing the set of expected tokens)
recoverable: (boolean: TRUE when the parser has a error recovery rule available for this particular error)
}
*/
var MathParser = (function(){
var parser = {trace: function trace() { },
yy: {},
symbols_: {"error":2,"expr":3,"OPEN_PAREN":4,"CLOSE_PAREN":5,"MINUS":6,"add_op":7,"PLUS":8,"mult_op":9,"TIMES":10,"DIVIDED_BY":11,"value":12,"NUMBER":13,"STRING":14,"xpath_op":15,"VALUE_XPATH":16,"LENGTH_XPATH":17,"SUM_XPATH":18,"SLICE_XPATH":19,"expression":20,"END":21,"$accept":0,"$end":1},
terminals_: {2:"error",4:"OPEN_PAREN",5:"CLOSE_PAREN",6:"MINUS",8:"PLUS",10:"TIMES",11:"DIVIDED_BY",13:"NUMBER",14:"STRING",16:"VALUE_XPATH",17:"LENGTH_XPATH",18:"SUM_XPATH",19:"SLICE_XPATH",21:"END"},
productions_: [0,[3,3],[3,2],[3,1],[7,3],[7,3],[7,1],[9,3],[9,3],[9,1],[12,1],[12,1],[12,1],[15,1],[15,1],[15,1],[15,1],[20,2]],
performAction: function anonymous(yytext, yyleng, yylineno, yy, yystate /* action[1] */, $$ /* vstack */, _$ /* lstack */) {
/* this == yyval */
var $0 = $$.length - 1;
switch (yystate) {
case 1: this.$ = $$[$0-1];
break;
case 2: this.$ = {op:'negate',value:$$[$0]};
break;
case 3: this.$ = $$[$0];
break;
case 4: this.$ = {op:'add',left:$$[$0-2],right:$$[$0]};
break;
case 5: this.$ = {op:'subtract',left:$$[$0-2],right:$$[$0]};
break;
case 6: this.$ = $$[$0];
break;
case 7: this.$ = {op:'multiply',left:$$[$0-2],right:$$[$0]};
break;
case 8: this.$ = {op:'divide',left:$$[$0-2],right:$$[$0]};
break;
case 9: this.$ = $$[$0];
break;
case 10: this.$ = {op:'literal',value:parseFloat(yytext)};
break;
case 11: this.$ = {op:'literal',value:yytext.slice(1,-1)};
break;
case 12: this.$ = $$[$0];
break;
case 13: this.$ = {op:'xpath',value:yytext.slice(2,-1)};
break;
case 14: this.$ = {op:'lengthof',value:{op:'xpath',value:yytext.slice(2,-1)}};
break;
case 15: this.$ = {op:'sum',value:{op:'xpath',value:yytext.slice(2,-1)}};
break;
case 16:
var data = yytext.slice(2,-1);
data = data.split('|');
this.$ = {op:'slice',value:{op:'xpath',value:data[0]}};
data = data[1].split(',');
if(isNaN(this.$.start = parseInt(data[0])))
this.$.start = undefined;
if(isNaN(this.$.end = parseInt(data[1])))
this.$.end = undefined;
break;
case 17:
var ret = {
xpaths: {}
};
function findXPaths(obj){
if(!obj){
return null;
}
else if(obj.op === 'xpath'){
ret.xpaths[obj.value] = null;
}
else if(obj.left && obj.right){
findXPaths(obj.left);
findXPaths(obj.right);
}
else {
findXPaths(obj.value);
}
}
findXPaths($$[$0-1]);
ret.evaluate = function(){
return (function evaluate(parse)
{
if(!parse)
return null;
else if(parse.op === 'literal')
return parse.value;
else if(parse.op === 'xpath'){
if(ret.xpaths[parse.value] === null){
throw 'No value for xpath '+parse.value;
}
else return ret.xpaths[parse.value];
}
else if(parse.op === 'add')
return evaluate(parse.left) + evaluate(parse.right);
else if(parse.op === 'subtract')
return evaluate(parse.left) - evaluate(parse.right);
else if(parse.op === 'multiply')
return evaluate(parse.left) * evaluate(parse.right);
else if(parse.op === 'divide')
return evaluate(parse.left) / evaluate(parse.right);
else if(parse.op === 'negate')
return -evaluate(parse.value);
else if(parse.op === 'sum'){
var val = evaluate(parse.value);
if(val.reduce)
return evaluate(parse.value).reduce(function(sum,val){return sum+val;},0);
else
return null;
}
else if(parse.op === 'lengthof')
return evaluate(parse.value).length || null;
else if(parse.op === 'slice'){
var val = evaluate(parse.value);
if(val.slice)
return val.slice(parse.start,parse.end);
else
return null;
}
else
throw 'Unknown operation: '+parse.op;
})($$[$0-1]);
};
return ret;
break;
}
},
table: [{3:2,4:[1,3],6:[1,4],7:5,9:6,12:7,13:[1,8],14:[1,9],15:10,16:[1,11],17:[1,12],18:[1,13],19:[1,14],20:1},{1:[3]},{6:[1,17],8:[1,16],10:[1,18],11:[1,19],21:[1,15]},{3:20,4:[1,3],6:[1,4],7:5,9:6,12:7,13:[1,8],14:[1,9],15:10,16:[1,11],17:[1,12],18:[1,13],19:[1,14]},{3:21,4:[1,3],6:[1,4],7:5,9:6,12:7,13:[1,8],14:[1,9],15:10,16:[1,11],17:[1,12],18:[1,13],19:[1,14]},{5:[2,3],6:[2,3],8:[2,3],10:[2,3],11:[2,3],21:[2,3]},{5:[2,6],6:[2,6],8:[2,6],10:[2,6],11:[2,6],21:[2,6]},{5:[2,9],6:[2,9],8:[2,9],10:[2,9],11:[2,9],21:[2,9]},{5:[2,10],6:[2,10],8:[2,10],10:[2,10],11:[2,10],21:[2,10]},{5:[2,11],6:[2,11],8:[2,11],10:[2,11],11:[2,11],21:[2,11]},{5:[2,12],6:[2,12],8:[2,12],10:[2,12],11:[2,12],21:[2,12]},{5:[2,13],6:[2,13],8:[2,13],10:[2,13],11:[2,13],21:[2,13]},{5:[2,14],6:[2,14],8:[2,14],10:[2,14],11:[2,14],21:[2,14]},{5:[2,15],6:[2,15],8:[2,15],10:[2,15],11:[2,15],21:[2,15]},{5:[2,16],6:[2,16],8:[2,16],10:[2,16],11:[2,16],21:[2,16]},{1:[2,17]},{3:22,4:[1,3],6:[1,4],7:5,9:6,12:7,13:[1,8],14:[1,9],15:10,16:[1,11],17:[1,12],18:[1,13],19:[1,14]},{3:23,4:[1,3],6:[1,4],7:5,9:6,12:7,13:[1,8],14:[1,9],15:10,16:[1,11],17:[1,12],18:[1,13],19:[1,14]},{3:24,4:[1,3],6:[1,4],7:5,9:6,12:7,13:[1,8],14:[1,9],15:10,16:[1,11],17:[1,12],18:[1,13],19:[1,14]},{3:25,4:[1,3],6:[1,4],7:5,9:6,12:7,13:[1,8],14:[1,9],15:10,16:[1,11],17:[1,12],18:[1,13],19:[1,14]},{5:[1,26],6:[1,17],8:[1,16],10:[1,18],11:[1,19]},{5:[2,2],6:[2,2],8:[2,2],10:[2,2],11:[2,2],21:[2,2]},{5:[2,4],6:[2,4],8:[2,4],10:[1,18],11:[1,19],21:[2,4]},{5:[2,5],6:[2,5],8:[2,5],10:[1,18],11:[1,19],21:[2,5]},{5:[2,7],6:[2,7],8:[2,7],10:[2,7],11:[2,7],21:[2,7]},{5:[2,8],6:[2,8],8:[2,8],10:[2,8],11:[2,8],21:[2,8]},{5:[2,1],6:[2,1],8:[2,1],10:[2,1],11:[2,1],21:[2,1]}],
defaultActions: {15:[2,17]},
parseError: function parseError(str, hash) {
if (hash.recoverable) {
this.trace(str);
} else {
throw new Error(str);
}
},
parse: function parse(input) {
var self = this, stack = [0], vstack = [null], lstack = [], table = this.table, yytext = '', yylineno = 0, yyleng = 0, recovering = 0, TERROR = 2, EOF = 1;
var args = lstack.slice.call(arguments, 1);
this.lexer.setInput(input);
this.lexer.yy = this.yy;
this.yy.lexer = this.lexer;
this.yy.parser = this;
if (typeof this.lexer.yylloc == 'undefined') {
this.lexer.yylloc = {};
}
var yyloc = this.lexer.yylloc;
lstack.push(yyloc);
var ranges = this.lexer.options && this.lexer.options.ranges;
if (typeof this.yy.parseError === 'function') {
this.parseError = this.yy.parseError;
} else {
this.parseError = Object.getPrototypeOf(this).parseError;
}
function popStack(n) {
stack.length = stack.length - 2 * n;
vstack.length = vstack.length - n;
lstack.length = lstack.length - n;
}
function lex() {
var token;
token = self.lexer.lex() || EOF;
if (typeof token !== 'number') {
token = self.symbols_[token] || token;
}
return token;
}
var symbol, preErrorSymbol, state, action, a, r, yyval = {}, p, len, newState, expected;
while (true) {
state = stack[stack.length - 1];
if (this.defaultActions[state]) {
action = this.defaultActions[state];
} else {
if (symbol === null || typeof symbol == 'undefined') {
symbol = lex();
}
action = table[state] && table[state][symbol];
}
if (typeof action === 'undefined' || !action.length || !action[0]) {
var errStr = '';
expected = [];
for (p in table[state]) {
if (this.terminals_[p] && p > TERROR) {
expected.push('\'' + this.terminals_[p] + '\'');
}
}
if (this.lexer.showPosition) {
errStr = 'Parse error on line ' + (yylineno + 1) + ':\n' + this.lexer.showPosition() + '\nExpecting ' + expected.join(', ') + ', got \'' + (this.terminals_[symbol] || symbol) + '\'';
} else {
errStr = 'Parse error on line ' + (yylineno + 1) + ': Unexpected ' + (symbol == EOF ? 'end of input' : '\'' + (this.terminals_[symbol] || symbol) + '\'');
}
this.parseError(errStr, {
text: this.lexer.match,
token: this.terminals_[symbol] || symbol,
line: this.lexer.yylineno,
loc: yyloc,
expected: expected
});
}
if (action[0] instanceof Array && action.length > 1) {
throw new Error('Parse Error: multiple actions possible at state: ' + state + ', token: ' + symbol);
}
switch (action[0]) {
case 1:
stack.push(symbol);
vstack.push(this.lexer.yytext);
lstack.push(this.lexer.yylloc);
stack.push(action[1]);
symbol = null;
if (!preErrorSymbol) {
yyleng = this.lexer.yyleng;
yytext = this.lexer.yytext;
yylineno = this.lexer.yylineno;
yyloc = this.lexer.yylloc;
if (recovering > 0) {
recovering--;
}
} else {
symbol = preErrorSymbol;
preErrorSymbol = null;
}
break;
case 2:
len = this.productions_[action[1]][1];
yyval.$ = vstack[vstack.length - len];
yyval._$ = {
first_line: lstack[lstack.length - (len || 1)].first_line,
last_line: lstack[lstack.length - 1].last_line,
first_column: lstack[lstack.length - (len || 1)].first_column,
last_column: lstack[lstack.length - 1].last_column
};
if (ranges) {
yyval._$.range = [
lstack[lstack.length - (len || 1)].range[0],
lstack[lstack.length - 1].range[1]
];
}
r = this.performAction.apply(yyval, [
yytext,
yyleng,
yylineno,
this.yy,
action[1],
vstack,
lstack
].concat(args));
if (typeof r !== 'undefined') {
return r;
}
if (len) {
stack = stack.slice(0, -1 * len * 2);
vstack = vstack.slice(0, -1 * len);
lstack = lstack.slice(0, -1 * len);
}
stack.push(this.productions_[action[1]][0]);
vstack.push(yyval.$);
lstack.push(yyval._$);
newState = table[stack[stack.length - 2]][stack[stack.length - 1]];
stack.push(newState);
break;
case 3:
return true;
}
}
return true;
}};
/* generated by jison-lex 0.2.1 */
var lexer = (function(){
var lexer = {
EOF:1,
parseError:function parseError(str, hash) {
if (this.yy.parser) {
this.yy.parser.parseError(str, hash);
} else {
throw new Error(str);
}
},
// resets the lexer, sets new input
setInput:function (input) {
this._input = input;
this._more = this._backtrack = this.done = false;
this.yylineno = this.yyleng = 0;
this.yytext = this.matched = this.match = '';
this.conditionStack = ['INITIAL'];
this.yylloc = {
first_line: 1,
first_column: 0,
last_line: 1,
last_column: 0
};
if (this.options.ranges) {
this.yylloc.range = [0,0];
}
this.offset = 0;
return this;
},
// consumes and returns one char from the input
input:function () {
var ch = this._input[0];
this.yytext += ch;
this.yyleng++;
this.offset++;
this.match += ch;
this.matched += ch;
var lines = ch.match(/(?:\r\n?|\n).*/g);
if (lines) {
this.yylineno++;
this.yylloc.last_line++;
} else {
this.yylloc.last_column++;
}
if (this.options.ranges) {
this.yylloc.range[1]++;
}
this._input = this._input.slice(1);
return ch;
},
// unshifts one char (or a string) into the input
unput:function (ch) {
var len = ch.length;
var lines = ch.split(/(?:\r\n?|\n)/g);
this._input = ch + this._input;
this.yytext = this.yytext.substr(0, this.yytext.length - len - 1);
//this.yyleng -= len;
this.offset -= len;
var oldLines = this.match.split(/(?:\r\n?|\n)/g);
this.match = this.match.substr(0, this.match.length - 1);
this.matched = this.matched.substr(0, this.matched.length - 1);
if (lines.length - 1) {
this.yylineno -= lines.length - 1;
}
var r = this.yylloc.range;
this.yylloc = {
first_line: this.yylloc.first_line,
last_line: this.yylineno + 1,
first_column: this.yylloc.first_column,
last_column: lines ?
(lines.length === oldLines.length ? this.yylloc.first_column : 0)
+ oldLines[oldLines.length - lines.length].length - lines[0].length :
this.yylloc.first_column - len
};
if (this.options.ranges) {
this.yylloc.range = [r[0], r[0] + this.yyleng - len];
}
this.yyleng = this.yytext.length;
return this;
},
// When called from action, caches matched text and appends it on next action
more:function () {
this._more = true;
return this;
},
// When called from action, signals the lexer that this rule fails to match the input, so the next matching rule (regex) should be tested instead.
reject:function () {
if (this.options.backtrack_lexer) {
this._backtrack = true;
} else {
return this.parseError('Lexical error on line ' + (this.yylineno + 1) + '. You can only invoke reject() in the lexer when the lexer is of the backtracking persuasion (options.backtrack_lexer = true).\n' + this.showPosition(), {
text: "",
token: null,
line: this.yylineno
});
}
return this;
},
// retain first n characters of the match
less:function (n) {
this.unput(this.match.slice(n));
},
// displays already matched input, i.e. for error messages
pastInput:function () {
var past = this.matched.substr(0, this.matched.length - this.match.length);
return (past.length > 20 ? '...':'') + past.substr(-20).replace(/\n/g, "");
},
// displays upcoming input, i.e. for error messages
upcomingInput:function () {
var next = this.match;
if (next.length < 20) {
next += this._input.substr(0, 20-next.length);
}
return (next.substr(0,20) + (next.length > 20 ? '...' : '')).replace(/\n/g, "");
},
// displays the character position where the lexing error occurred, i.e. for error messages
showPosition:function () {
var pre = this.pastInput();
var c = new Array(pre.length + 1).join("-");
return pre + this.upcomingInput() + "\n" + c + "^";
},
// test the lexed token: return FALSE when not a match, otherwise return token
test_match:function (match, indexed_rule) {
var token,
lines,
backup;
if (this.options.backtrack_lexer) {
// save context
backup = {
yylineno: this.yylineno,
yylloc: {
first_line: this.yylloc.first_line,
last_line: this.last_line,
first_column: this.yylloc.first_column,
last_column: this.yylloc.last_column
},
yytext: this.yytext,
match: this.match,
matches: this.matches,
matched: this.matched,
yyleng: this.yyleng,
offset: this.offset,
_more: this._more,
_input: this._input,
yy: this.yy,
conditionStack: this.conditionStack.slice(0),
done: this.done
};
if (this.options.ranges) {
backup.yylloc.range = this.yylloc.range.slice(0);
}
}
lines = match[0].match(/(?:\r\n?|\n).*/g);
if (lines) {
this.yylineno += lines.length;
}
this.yylloc = {
first_line: this.yylloc.last_line,
last_line: this.yylineno + 1,
first_column: this.yylloc.last_column,
last_column: lines ?
lines[lines.length - 1].length - lines[lines.length - 1].match(/\r?\n?/)[0].length :
this.yylloc.last_column + match[0].length
};
this.yytext += match[0];
this.match += match[0];
this.matches = match;
this.yyleng = this.yytext.length;
if (this.options.ranges) {
this.yylloc.range = [this.offset, this.offset += this.yyleng];
}
this._more = false;
this._backtrack = false;
this._input = this._input.slice(match[0].length);
this.matched += match[0];
token = this.performAction.call(this, this.yy, this, indexed_rule, this.conditionStack[this.conditionStack.length - 1]);
if (this.done && this._input) {
this.done = false;
}
if (token) {
return token;
} else if (this._backtrack) {
// recover context
for (var k in backup) {
this[k] = backup[k];
}
return false; // rule action called reject() implying the next rule should be tested instead.
}
return false;
},
// return next match in input
next:function () {
if (this.done) {
return this.EOF;
}
if (!this._input) {
this.done = true;
}
var token,
match,
tempMatch,
index;
if (!this._more) {
this.yytext = '';
this.match = '';
}
var rules = this._currentRules();
for (var i = 0; i < rules.length; i++) {
tempMatch = this._input.match(this.rules[rules[i]]);
if (tempMatch && (!match || tempMatch[0].length > match[0].length)) {
match = tempMatch;
index = i;
if (this.options.backtrack_lexer) {
token = this.test_match(tempMatch, rules[i]);
if (token !== false) {
return token;
} else if (this._backtrack) {
match = false;
continue; // rule action called reject() implying a rule MISmatch.
} else {
// else: this is a lexer rule which consumes input without producing a token (e.g. whitespace)
return false;
}
} else if (!this.options.flex) {
break;
}
}
}
if (match) {
token = this.test_match(match, rules[index]);
if (token !== false) {
return token;
}
// else: this is a lexer rule which consumes input without producing a token (e.g. whitespace)
return false;
}
if (this._input === "") {
return this.EOF;
} else {
return this.parseError('Lexical error on line ' + (this.yylineno + 1) + '. Unrecognized text.\n' + this.showPosition(), {
text: "",
token: null,
line: this.yylineno
});
}
},
// return next match that has a token
lex:function lex() {
var r = this.next();
if (r) {
return r;
} else {
return this.lex();
}
},
// activates a new lexer condition state (pushes the new lexer condition state onto the condition stack)
begin:function begin(condition) {
this.conditionStack.push(condition);
},
// pop the previously active lexer condition state off the condition stack
popState:function popState() {
var n = this.conditionStack.length - 1;
if (n > 0) {
return this.conditionStack.pop();
} else {
return this.conditionStack[0];
}
},
// produce the lexer rule set which is active for the currently active lexer condition state
_currentRules:function _currentRules() {
if (this.conditionStack.length && this.conditionStack[this.conditionStack.length - 1]) {
return this.conditions[this.conditionStack[this.conditionStack.length - 1]].rules;
} else {
return this.conditions["INITIAL"].rules;
}
},
// return the currently active lexer condition state; when an index argument is provided it produces the N-th previous condition state, if available
topState:function topState(n) {
n = this.conditionStack.length - 1 - Math.abs(n || 0);
if (n >= 0) {
return this.conditionStack[n];
} else {
return "INITIAL";
}
},
// alias for begin(condition)
pushState:function pushState(condition) {
this.begin(condition);
},
// return the number of states currently on the stack
stateStackSize:function stateStackSize() {
return this.conditionStack.length;
},
options: {},
performAction: function anonymous(yy,yy_,$avoiding_name_collisions,YY_START) {
var YYSTATE=YY_START;
switch($avoiding_name_collisions) {
case 0:return 13;
break;
case 1:return 14;
break;
case 2:return 16;
break;
case 3:return 17;
break;
case 4:return 18;
break;
case 5:return 19;
break;
case 6:return 8;
break;
case 7:return 6;
break;
case 8:return 10;
break;
case 9:return 11;
break;
case 10:return 4;
break;
case 11:return 5;
break;
case 12:return 21;
break;
case 13:;
break;
}
},
rules: [/^(?:-?[0-9]+(\.[0-9]+)?)/,/^(?:"[^"]+")/,/^(?:\$\([^\)]+\))/,/^(?:\$\|[^|]+\|)/,/^(?:\$\{[^\}]+\})/,/^(?:\$\[[^|]+\|-?[0-9]+(,-?[0-9]+)?\])/,/^(?:\+)/,/^(?:-)/,/^(?:\*)/,/^(?:\/)/,/^(?:\()/,/^(?:\))/,/^(?:$)/,/^(?:[ \t\n])/],
conditions: {"INITIAL":{"rules":[0,1,2,3,4,5,6,7,8,9,10,11,12,13],"inclusive":true}}
};
return lexer;
})();
parser.lexer = lexer;
function Parser () {
this.yy = {};
}
Parser.prototype = parser;parser.Parser = Parser;
return new Parser;
})();
if (typeof require !== 'undefined' && typeof exports !== 'undefined') {
exports.parser = MathParser;
exports.Parser = MathParser.Parser;
exports.parse = function () { return MathParser.parse.apply(MathParser, arguments); };
exports.main = function commonjsMain(args) {
if (!args[1]) {
console.log('Usage: '+args[0]+' FILE');
process.exit(1);
}
var source = require('fs').readFileSync(require('path').normalize(args[1]), "utf8");
return exports.parser.parse(source);
};
if (typeof module !== 'undefined' && require.main === module) {
exports.main(process.argv.slice(1));
}
};/***********************************************************************
* collection.js: Run queries on Experience API data
*
* Initialize the ADL.Collection class with a list of xAPI statements,
* then run SQL-style queries over the data, e.g. where, select, count.
*
* Comes in two versions: CollectionSync and CollectionAsync.
***********************************************************************/
"use strict";
// guarantee window.ADL, even in a worker
try {
window.ADL = window.ADL || {};
}
catch(e){
var window = {'ADL': {}};
}
// figure out script path if available
try {
var workerScript = document.querySelector('script[src*="xapicollection"]').src;
}
catch(e){}
// poly-fill array checking
if(!Array.isArray){
Array.isArray = function(obj){
return obj.length >= 0 && !obj['length'];
}
}
/*
* Client scope
*/
(function(ADL){
/*
* Retrieves some deep value at path from an object
*/
function getVal(path,obj)
{
// if nothing to search, return null
if(obj === undefined){
return null;
}
// if no descent, just return object
else if(path.length === 0){
return obj;
}
else {
// break xpath into individual keys
var parts;
if(Array.isArray(path)){
parts = path;
}
else {
parts = path.split('.');
for(var i=0; i<parts.length;){
if(parts[i].slice(-1) === '\\')
parts.splice(i, 2, parts[i].slice(0,-1)+'.'+parts[i+1]);
else
i++;
}
}
// fetch deep path
var scoped = parts[0], rest = parts.slice(1);
if( scoped === '*' )
{
var ret = [], keys = [];
if(Array.isArray(obj)){
for(var i=0; i<obj.length; i++) keys.push(i);
}
else {
keys = Object.keys(obj);
}
for(var i=0; i<keys.length; i++){
var keyout = getVal(rest, obj[keys[i]]);
if(Array.isArray(keyout))
ret.push.apply(ret,keyout);
else
ret.push(keyout);
}
return ret;
}
else {
return getVal(rest, obj[scoped]);
}
}
}
/*
* Set some deep value in an object
*/
function setVal(obj,path,value)
{
// break xpath into individual keys
var parts;
if(Array.isArray(path)){
parts = path;
}
else {
parts = path.split('.');
for(var i=0; i<parts.length;){
if(parts[i].slice(-1) === '\\')
parts.splice(i, 2, parts[i].slice(0,-1)+'.'+parts[i+1]);
else
i++;
}
}
if(!obj){
obj = {};
}
if(parts.length === 1){
obj[parts[0]] = value;
}
else {
if(obj[parts[0]] !== undefined)
obj[parts[0]] = setVal(obj[parts[0]], parts.slice(1), value);
else
obj[parts[0]] = setVal({}, parts.slice(1), value);
}
return obj;
}
/*************************************************************
* CollectionSync - the core processor of statements
*
* This is where the magic happens. CollectionSync is initialized
* with an array of statements, processes those statements
* based on the method called, and returns a new CollectionSync
* object containing the results of the query.
*************************************************************/
function CollectionSync(data){
if(Array.isArray(data)){
this.contents = data.slice();
}
else if(data instanceof CollectionSync){
this.contents = data.contents.slice();
this.parent = data;
}
else {
this.contents = [];
}
}
CollectionSync.prototype.exec = function(cb){
cb(this.contents);
return this.parent;
}
CollectionSync.prototype.save = function(){
return new CollectionSync(this);
}
CollectionSync.prototype.append = function(data){
this.contents = this.contents.concat(data);
return this;
}
/*
* Generate a CSV based on the contents of the collection
* Returns a CSV string
*/
CollectionSync.prototype.toCSV = function()
{
function sanitize(str){
if( typeof str === 'object' ) str = JSON.stringify(str);
if( typeof str === 'string' ) str = str.replace(/"/g, '""');
return '"' + str + '"';
}
if(this.contents.length > 0)
{
var ret = '';
var headers = Object.keys(this.contents[0]);
ret += headers.map(sanitize).join(',') + '\r\n';
for(var i=0; i<this.contents.length; i++){
ret += headers.map(function(h){
return sanitize(this.contents[i][h]);
}.bind(this))
.join(',') + '\r\n';
}
return ret;
}
else {
return '';
}
}
/*
* Filter out data entries not matching the query expression
*/
CollectionSync.prototype.where = function(query)
{
/*
* Query format example
* stmts.where('verb.id = passed or verb.id = failed and result.score.raw >= 50');
*
* Query grammar:
* value := parseInt | parseFloat | "(.*)" | /(.*)/i?
* xpath := [A-Za-z0-9_]+(\.[A-za-z0-9_]+)*
* cond := <xpath> (=|!=|>|<|>=|<=) <value>
* andGrp := <expr> 'and' <expr> | <cond>
* orGrp := <expr> 'or' <expr> | <andGrp>
* expr := '(' <expr> ')' | <orGrp>
*/
var PARSE_ERROR = NaN;
function parseWhere(str)
{
// expr := '(' <expr> ')' | <orGrp>
function expr(str)
{
// check for parens
var match = /^\s*\((.*)\)\s*$/.exec(str);
if(match){
return expr(match[1]);
}
else {
return orGrp(str);
}
}
// check if a string has the same number of left and right parens
function matchedParens(str){
var level = 0;
for(var i=0; i<str.length; i++){
if(str[i] === '('){
level++;
}
else if(str[i] === ')'){
level--;
}
}
return level === 0;
}
// orGrp := <expr> 'or' <expr> | <andGrp>
function orGrp(str)
{
// loop over each possible combo of or arguments
var parts = str.split(/\bor\b/);
var expr1 = '', expr2 = '';
for(var i=1; i<parts.length; i++)
{
var tempexpr1 = parts.slice(0,i).join('or');
var tempexpr2 = parts.slice(i).join('or');
// if both args have matched parens, continue