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authorGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
committerGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
commite06ec920f7a5d784e674c4c4b4e6d1da3dc7391d (patch)
tree55713f725f77b44ebfec86e4eec3ce33e71458ca /node_modules/schema-utils/dist/util/Range.js
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-rw-r--r--node_modules/schema-utils/dist/util/Range.js163
1 files changed, 163 insertions, 0 deletions
diff --git a/node_modules/schema-utils/dist/util/Range.js b/node_modules/schema-utils/dist/util/Range.js
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+"use strict";
+
+/**
+ * @typedef {[number, boolean]} RangeValue
+ */
+
+/**
+ * @callback RangeValueCallback
+ * @param {RangeValue} rangeValue
+ * @returns {boolean}
+ */
+class Range {
+ /**
+ * @param {"left" | "right"} side
+ * @param {boolean} exclusive
+ * @returns {">" | ">=" | "<" | "<="}
+ */
+ static getOperator(side, exclusive) {
+ if (side === 'left') {
+ return exclusive ? '>' : '>=';
+ }
+
+ return exclusive ? '<' : '<=';
+ }
+ /**
+ * @param {number} value
+ * @param {boolean} logic is not logic applied
+ * @param {boolean} exclusive is range exclusive
+ * @returns {string}
+ */
+
+
+ static formatRight(value, logic, exclusive) {
+ if (logic === false) {
+ return Range.formatLeft(value, !logic, !exclusive);
+ }
+
+ return `should be ${Range.getOperator('right', exclusive)} ${value}`;
+ }
+ /**
+ * @param {number} value
+ * @param {boolean} logic is not logic applied
+ * @param {boolean} exclusive is range exclusive
+ * @returns {string}
+ */
+
+
+ static formatLeft(value, logic, exclusive) {
+ if (logic === false) {
+ return Range.formatRight(value, !logic, !exclusive);
+ }
+
+ return `should be ${Range.getOperator('left', exclusive)} ${value}`;
+ }
+ /**
+ * @param {number} start left side value
+ * @param {number} end right side value
+ * @param {boolean} startExclusive is range exclusive from left side
+ * @param {boolean} endExclusive is range exclusive from right side
+ * @param {boolean} logic is not logic applied
+ * @returns {string}
+ */
+
+
+ static formatRange(start, end, startExclusive, endExclusive, logic) {
+ let result = 'should be';
+ result += ` ${Range.getOperator(logic ? 'left' : 'right', logic ? startExclusive : !startExclusive)} ${start} `;
+ result += logic ? 'and' : 'or';
+ result += ` ${Range.getOperator(logic ? 'right' : 'left', logic ? endExclusive : !endExclusive)} ${end}`;
+ return result;
+ }
+ /**
+ * @param {Array<RangeValue>} values
+ * @param {boolean} logic is not logic applied
+ * @return {RangeValue} computed value and it's exclusive flag
+ */
+
+
+ static getRangeValue(values, logic) {
+ let minMax = logic ? Infinity : -Infinity;
+ let j = -1;
+ const predicate = logic ?
+ /** @type {RangeValueCallback} */
+ ([value]) => value <= minMax :
+ /** @type {RangeValueCallback} */
+ ([value]) => value >= minMax;
+
+ for (let i = 0; i < values.length; i++) {
+ if (predicate(values[i])) {
+ [minMax] = values[i];
+ j = i;
+ }
+ }
+
+ if (j > -1) {
+ return values[j];
+ }
+
+ return [Infinity, true];
+ }
+
+ constructor() {
+ /** @type {Array<RangeValue>} */
+ this._left = [];
+ /** @type {Array<RangeValue>} */
+
+ this._right = [];
+ }
+ /**
+ * @param {number} value
+ * @param {boolean=} exclusive
+ */
+
+
+ left(value, exclusive = false) {
+ this._left.push([value, exclusive]);
+ }
+ /**
+ * @param {number} value
+ * @param {boolean=} exclusive
+ */
+
+
+ right(value, exclusive = false) {
+ this._right.push([value, exclusive]);
+ }
+ /**
+ * @param {boolean} logic is not logic applied
+ * @return {string} "smart" range string representation
+ */
+
+
+ format(logic = true) {
+ const [start, leftExclusive] = Range.getRangeValue(this._left, logic);
+ const [end, rightExclusive] = Range.getRangeValue(this._right, !logic);
+
+ if (!Number.isFinite(start) && !Number.isFinite(end)) {
+ return '';
+ }
+
+ const realStart = leftExclusive ? start + 1 : start;
+ const realEnd = rightExclusive ? end - 1 : end; // e.g. 5 < x < 7, 5 < x <= 6, 6 <= x <= 6
+
+ if (realStart === realEnd) {
+ return `should be ${logic ? '' : '!'}= ${realStart}`;
+ } // e.g. 4 < x < ∞
+
+
+ if (Number.isFinite(start) && !Number.isFinite(end)) {
+ return Range.formatLeft(start, logic, leftExclusive);
+ } // e.g. ∞ < x < 4
+
+
+ if (!Number.isFinite(start) && Number.isFinite(end)) {
+ return Range.formatRight(end, logic, rightExclusive);
+ }
+
+ return Range.formatRange(start, end, leftExclusive, rightExclusive, logic);
+ }
+
+}
+
+module.exports = Range; \ No newline at end of file