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Diffstat (limited to 'node_modules/schema-utils/dist/util/Range.js')
| -rw-r--r-- | node_modules/schema-utils/dist/util/Range.js | 163 |
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 new file mode 100644 index 0000000..74bb057 --- /dev/null +++ b/node_modules/schema-utils/dist/util/Range.js @@ -0,0 +1,163 @@ +"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;
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