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