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- 'use strict';
- const Hoek = require('@hapi/hoek');
- const Any = require('../any');
- const Ref = require('../../ref');
- const internals = {
- precisionRx: /(?:\.(\d+))?(?:[eE]([+-]?\d+))?$/,
- normalizeExponent(str) {
- return str
- .replace(/\.?0+e/, 'e')
- .replace(/e\+/, 'e')
- .replace(/^\+/, '')
- .replace(/^(-?)0+([1-9])/, '$1$2');
- },
- normalizeDecimal(str) {
- str = str
- .replace(/^\+/, '')
- .replace(/\.0+$/, '')
- .replace(/^(-?)0+([1-9])/, '$1$2');
- if (str.includes('.') && str.endsWith('0')) {
- str = str.replace(/0+$/, '');
- }
- return str;
- }
- };
- internals.Number = class extends Any {
- constructor() {
- super();
- this._type = 'number';
- this._flags.unsafe = false;
- this._invalids.add(Infinity);
- this._invalids.add(-Infinity);
- }
- _base(value, state, options) {
- const result = {
- errors: null,
- value
- };
- if (typeof value === 'string' &&
- options.convert) {
- const matches = value.match(/^\s*[+-]?\d+(?:\.\d+)?(?:e([+-]?\d+))?\s*$/i);
- if (matches) {
- value = value.trim();
- result.value = parseFloat(value);
- if (!this._flags.unsafe) {
- if (value.includes('e')) {
- if (internals.normalizeExponent(`${result.value / Math.pow(10, matches[1])}e${matches[1]}`) !== internals.normalizeExponent(value)) {
- result.errors = this.createError('number.unsafe', { value }, state, options);
- return result;
- }
- }
- else {
- if (result.value.toString() !== internals.normalizeDecimal(value)) {
- result.errors = this.createError('number.unsafe', { value }, state, options);
- return result;
- }
- }
- }
- }
- }
- const isNumber = typeof result.value === 'number' && !isNaN(result.value);
- if (options.convert && 'precision' in this._flags && isNumber) {
- // This is conceptually equivalent to using toFixed but it should be much faster
- const precision = Math.pow(10, this._flags.precision);
- result.value = Math.round(result.value * precision) / precision;
- }
- if (isNumber) {
- if (!this._flags.unsafe &&
- (value > Number.MAX_SAFE_INTEGER || value < Number.MIN_SAFE_INTEGER)) {
- result.errors = this.createError('number.unsafe', { value }, state, options);
- }
- }
- else {
- result.errors = this.createError('number.base', { value }, state, options);
- }
- return result;
- }
- multiple(base) {
- const isRef = Ref.isRef(base);
- if (!isRef) {
- Hoek.assert(typeof base === 'number' && isFinite(base), 'multiple must be a number');
- Hoek.assert(base > 0, 'multiple must be greater than 0');
- }
- return this._test('multiple', base, function (value, state, options) {
- const divisor = isRef ? base(state.reference || state.parent, options) : base;
- if (isRef && (typeof divisor !== 'number' || !isFinite(divisor))) {
- return this.createError('number.ref', { ref: base.key }, state, options);
- }
- if (value % divisor === 0) {
- return value;
- }
- return this.createError('number.multiple', { multiple: base, value }, state, options);
- });
- }
- integer() {
- return this._test('integer', undefined, function (value, state, options) {
- return Math.trunc(value) - value === 0 ? value : this.createError('number.integer', { value }, state, options);
- });
- }
- unsafe(enabled = true) {
- Hoek.assert(typeof enabled === 'boolean', 'enabled must be a boolean');
- if (this._flags.unsafe === enabled) {
- return this;
- }
- const obj = this.clone();
- obj._flags.unsafe = enabled;
- return obj;
- }
- negative() {
- return this._test('negative', undefined, function (value, state, options) {
- if (value < 0) {
- return value;
- }
- return this.createError('number.negative', { value }, state, options);
- });
- }
- positive() {
- return this._test('positive', undefined, function (value, state, options) {
- if (value > 0) {
- return value;
- }
- return this.createError('number.positive', { value }, state, options);
- });
- }
- precision(limit) {
- Hoek.assert(Number.isSafeInteger(limit), 'limit must be an integer');
- Hoek.assert(!('precision' in this._flags), 'precision already set');
- const obj = this._test('precision', limit, function (value, state, options) {
- const places = value.toString().match(internals.precisionRx);
- const decimals = Math.max((places[1] ? places[1].length : 0) - (places[2] ? parseInt(places[2], 10) : 0), 0);
- if (decimals <= limit) {
- return value;
- }
- return this.createError('number.precision', { limit, value }, state, options);
- });
- obj._flags.precision = limit;
- return obj;
- }
- port() {
- return this._test('port', undefined, function (value, state, options) {
- if (!Number.isSafeInteger(value) || value < 0 || value > 65535) {
- return this.createError('number.port', { value }, state, options);
- }
- return value;
- });
- }
- };
- internals.compare = function (type, compare) {
- return function (limit) {
- const isRef = Ref.isRef(limit);
- const isNumber = typeof limit === 'number' && !isNaN(limit);
- Hoek.assert(isNumber || isRef, 'limit must be a number or reference');
- return this._test(type, limit, function (value, state, options) {
- let compareTo;
- if (isRef) {
- compareTo = limit(state.reference || state.parent, options);
- if (!(typeof compareTo === 'number' && !isNaN(compareTo))) {
- return this.createError('number.ref', { ref: limit.key }, state, options);
- }
- }
- else {
- compareTo = limit;
- }
- if (compare(value, compareTo)) {
- return value;
- }
- return this.createError('number.' + type, { limit: compareTo, value }, state, options);
- });
- };
- };
- internals.Number.prototype.min = internals.compare('min', (value, limit) => value >= limit);
- internals.Number.prototype.max = internals.compare('max', (value, limit) => value <= limit);
- internals.Number.prototype.greater = internals.compare('greater', (value, limit) => value > limit);
- internals.Number.prototype.less = internals.compare('less', (value, limit) => value < limit);
- module.exports = new internals.Number();
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