140 lines
3.6 KiB
JavaScript
140 lines
3.6 KiB
JavaScript
const ANY = Symbol('SemVer ANY')
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// hoisted class for cyclic dependency
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class Comparator {
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static get ANY () {
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return ANY
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}
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constructor (comp, options) {
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if (!options || typeof options !== 'object') {
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options = {
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loose: !!options,
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includePrerelease: false
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}
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}
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if (comp instanceof Comparator) {
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if (comp.loose === !!options.loose) {
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return comp
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} else {
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comp = comp.value
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}
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}
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debug('comparator', comp, options)
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this.options = options
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this.loose = !!options.loose
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this.parse(comp)
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if (this.semver === ANY) {
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this.value = ''
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} else {
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this.value = this.operator + this.semver.version
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}
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debug('comp', this)
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}
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parse (comp) {
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const r = this.options.loose ? re[t.COMPARATORLOOSE] : re[t.COMPARATOR]
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const m = comp.match(r)
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if (!m) {
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throw new TypeError(`Invalid comparator: ${comp}`)
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}
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this.operator = m[1] !== undefined ? m[1] : ''
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if (this.operator === '=') {
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this.operator = ''
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}
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// if it literally is just '>' or '' then allow anything.
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if (!m[2]) {
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this.semver = ANY
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} else {
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this.semver = new SemVer(m[2], this.options.loose)
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}
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}
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toString () {
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return this.value
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}
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test (version) {
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debug('Comparator.test', version, this.options.loose)
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if (this.semver === ANY || version === ANY) {
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return true
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}
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if (typeof version === 'string') {
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try {
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version = new SemVer(version, this.options)
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} catch (er) {
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return false
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}
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}
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return cmp(version, this.operator, this.semver, this.options)
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}
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intersects (comp, options) {
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if (!(comp instanceof Comparator)) {
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throw new TypeError('a Comparator is required')
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}
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if (!options || typeof options !== 'object') {
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options = {
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loose: !!options,
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includePrerelease: false
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}
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}
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if (this.operator === '') {
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if (this.value === '') {
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return true
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}
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return new Range(comp.value, options).test(this.value)
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} else if (comp.operator === '') {
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if (comp.value === '') {
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return true
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}
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return new Range(this.value, options).test(comp.semver)
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}
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const sameDirectionIncreasing =
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(this.operator === '>=' || this.operator === '>') &&
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(comp.operator === '>=' || comp.operator === '>')
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const sameDirectionDecreasing =
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(this.operator === '<=' || this.operator === '<') &&
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(comp.operator === '<=' || comp.operator === '<')
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const sameSemVer = this.semver.version === comp.semver.version
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const differentDirectionsInclusive =
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(this.operator === '>=' || this.operator === '<=') &&
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(comp.operator === '>=' || comp.operator === '<=')
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const oppositeDirectionsLessThan =
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cmp(this.semver, '<', comp.semver, options) &&
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(this.operator === '>=' || this.operator === '>') &&
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(comp.operator === '<=' || comp.operator === '<')
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const oppositeDirectionsGreaterThan =
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cmp(this.semver, '>', comp.semver, options) &&
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(this.operator === '<=' || this.operator === '<') &&
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(comp.operator === '>=' || comp.operator === '>')
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return (
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sameDirectionIncreasing ||
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sameDirectionDecreasing ||
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(sameSemVer && differentDirectionsInclusive) ||
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oppositeDirectionsLessThan ||
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oppositeDirectionsGreaterThan
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)
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}
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}
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module.exports = Comparator
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const {re, t} = require('../internal/re')
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const cmp = require('../functions/cmp')
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const debug = require('../internal/debug')
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const SemVer = require('./semver')
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const Range = require('./range')
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