1 Number._parse = function Number$_parse(value, cultureInfo) {
2 value = value.trim();
3
4 if (value.match(/^[+-]?infinity$/i)) {
5 return parseFloat(value);
6 }
7 if (value.match(/^0x[a-f0-9]+$/i)) {
8 return parseInt(value);
9 }
10 var numFormat = cultureInfo.numberFormat;
11 var signInfo = Number._parseNumberNegativePattern(value, numFormat, numFormat.NumberNegativePattern);
12 var sign = signInfo[0];
13 var num = signInfo[1];
14
15 if ((sign === '') && (numFormat.NumberNegativePattern !== 1)) {
16 signInfo = Number._parseNumberNegativePattern(value, numFormat, 1);
17 sign = signInfo[0];
18 num = signInfo[1];
19 }
20 if (sign === '') sign = '+';
21
22 var exponent;
23 var intAndFraction;
24 var exponentPos = num.indexOf('e');
25 if (exponentPos < 0) exponentPos = num.indexOf('E');
26 if (exponentPos < 0) {
27 intAndFraction = num;
28 exponent = null;
29 }
30 else {
31 intAndFraction = num.substr(0, exponentPos);
32 exponent = num.substr(exponentPos + 1);
33 }
34
35 var integer;
36 var fraction;
37 var decimalPos = intAndFraction.indexOf(numFormat.NumberDecimalSeparator);
38 if (decimalPos < 0) {
39 integer = intAndFraction;
40 fraction = null;
41 }
42 else {
43 integer = intAndFraction.substr(0, decimalPos);
44 fraction = intAndFraction.substr(decimalPos + numFormat.NumberDecimalSeparator.length);
45 }
46
47 integer = integer.split(numFormat.NumberGroupSeparator).join('');
48
49 var p = sign + integer;
50 if (fraction !== null) {
51 p += '.' + fraction;
52 }
53 if (exponent !== null) {
54 var expSignInfo = Number._parseNumberNegativePattern(exponent, numFormat, 1);
55 if (expSignInfo[0] === '') {
56 expSignInfo[0] = '+';
57 }
58 p += 'e' + expSignInfo[0] + expSignInfo[1];
59 }
60 if (p.match(/^[+-]?\d*\.?\d*(e[+-]?\d+)?$/)) {
61 return parseFloat(p);
62 }
63 return Number.NaN;
64 }
