You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
75 lines
2.1 KiB
75 lines
2.1 KiB
2 years ago
|
"use strict";
|
||
|
|
const _ = require("lodash");
|
||
|
|
function stringifyRangeBound(bound) {
|
||
|
|
if (bound === null) {
|
||
|
|
return "";
|
||
|
|
}
|
||
|
|
if (bound === Infinity || bound === -Infinity) {
|
||
|
|
return bound.toString().toLowerCase();
|
||
|
|
}
|
||
|
|
return JSON.stringify(bound);
|
||
|
|
}
|
||
|
|
function parseRangeBound(bound, parseType) {
|
||
|
|
if (!bound) {
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
if (bound === "infinity") {
|
||
|
|
return Infinity;
|
||
|
|
}
|
||
|
|
if (bound === "-infinity") {
|
||
|
|
return -Infinity;
|
||
|
|
}
|
||
|
|
return parseType(bound);
|
||
|
|
}
|
||
|
|
function stringify(data) {
|
||
|
|
if (data === null)
|
||
|
|
return null;
|
||
|
|
if (!Array.isArray(data))
|
||
|
|
throw new Error("range must be an array");
|
||
|
|
if (!data.length)
|
||
|
|
return "empty";
|
||
|
|
if (data.length !== 2)
|
||
|
|
throw new Error("range array length must be 0 (empty) or 2 (lower and upper bounds)");
|
||
|
|
if (Object.prototype.hasOwnProperty.call(data, "inclusive")) {
|
||
|
|
if (data.inclusive === false)
|
||
|
|
data.inclusive = [false, false];
|
||
|
|
else if (!data.inclusive)
|
||
|
|
data.inclusive = [true, false];
|
||
|
|
else if (data.inclusive === true)
|
||
|
|
data.inclusive = [true, true];
|
||
|
|
} else {
|
||
|
|
data.inclusive = [true, false];
|
||
|
|
}
|
||
|
|
_.each(data, (value, index) => {
|
||
|
|
if (_.isObject(value)) {
|
||
|
|
if (Object.prototype.hasOwnProperty.call(value, "inclusive"))
|
||
|
|
data.inclusive[index] = !!value.inclusive;
|
||
|
|
if (Object.prototype.hasOwnProperty.call(value, "value"))
|
||
|
|
data[index] = value.value;
|
||
|
|
}
|
||
|
|
});
|
||
|
|
const lowerBound = stringifyRangeBound(data[0]);
|
||
|
|
const upperBound = stringifyRangeBound(data[1]);
|
||
|
|
return `${(data.inclusive[0] ? "[" : "(") + lowerBound},${upperBound}${data.inclusive[1] ? "]" : ")"}`;
|
||
|
|
}
|
||
|
|
exports.stringify = stringify;
|
||
|
|
function parse(value, parser) {
|
||
|
|
if (value === null)
|
||
|
|
return null;
|
||
|
|
if (value === "empty") {
|
||
|
|
return [];
|
||
|
|
}
|
||
|
|
let result = value.substring(1, value.length - 1).split(",", 2);
|
||
|
|
if (result.length !== 2)
|
||
|
|
return value;
|
||
|
|
result = result.map((item, index) => {
|
||
|
|
return {
|
||
|
|
value: parseRangeBound(item, parser),
|
||
|
|
inclusive: index === 0 ? value[0] === "[" : value[value.length - 1] === "]"
|
||
|
|
};
|
||
|
|
});
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
exports.parse = parse;
|
||
|
|
//# sourceMappingURL=range.js.map
|