1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
|
'use strict';
var Scalar = require('../../nodes/Scalar.js');
var stringifyNumber = require('../../stringify/stringifyNumber.js');
const floatNaN = {
identify: value => typeof value === 'number',
default: true,
tag: 'tag:yaml.org,2002:float',
test: /^(?:[-+]?\.(?:inf|Inf|INF|nan|NaN|NAN))$/,
resolve: str => str.slice(-3).toLowerCase() === 'nan'
? NaN
: str[0] === '-'
? Number.NEGATIVE_INFINITY
: Number.POSITIVE_INFINITY,
stringify: stringifyNumber.stringifyNumber
};
const floatExp = {
identify: value => typeof value === 'number',
default: true,
tag: 'tag:yaml.org,2002:float',
format: 'EXP',
test: /^[-+]?(?:\.[0-9]+|[0-9]+(?:\.[0-9]*)?)[eE][-+]?[0-9]+$/,
resolve: str => parseFloat(str),
stringify(node) {
const num = Number(node.value);
return isFinite(num) ? num.toExponential() : stringifyNumber.stringifyNumber(node);
}
};
const float = {
identify: value => typeof value === 'number',
default: true,
tag: 'tag:yaml.org,2002:float',
test: /^[-+]?(?:\.[0-9]+|[0-9]+\.[0-9]*)$/,
resolve(str) {
const node = new Scalar.Scalar(parseFloat(str));
const dot = str.indexOf('.');
if (dot !== -1 && str[str.length - 1] === '0')
node.minFractionDigits = str.length - dot - 1;
return node;
},
stringify: stringifyNumber.stringifyNumber
};
exports.float = float;
exports.floatExp = floatExp;
exports.floatNaN = floatNaN;
|
