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18 | <h1>
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19 | <a href="index.html">All files</a> cucumber_expression.js
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21 | <div class='clearfix'>
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22 | <div class='fl pad1y space-right2'>
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23 | <span class="strong">100% </span>
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24 | <span class="quiet">Statements</span>
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25 | <span class='fraction'>57/57</span>
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26 | </div>
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27 | <div class='fl pad1y space-right2'>
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28 | <span class="strong">100% </span>
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29 | <span class="quiet">Branches</span>
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30 | <span class='fraction'>12/12</span>
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31 | </div>
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32 | <div class='fl pad1y space-right2'>
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33 | <span class="strong">100% </span>
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34 | <span class="quiet">Functions</span>
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35 | <span class='fraction'>18/18</span>
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36 | </div>
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37 | <div class='fl pad1y space-right2'>
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38 | <span class="strong">100% </span>
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39 | <span class="quiet">Lines</span>
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40 | <span class='fraction'>52/52</span>
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41 | </div>
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42 | </div>
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43 | <p class="quiet">
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44 | Press <em>n</em> or <em>j</em> to go to the next uncovered block, <em>b</em>, <em>p</em> or <em>k</em> for the previous block.
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45 | </p>
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46 | </div>
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47 | <div class='status-line high'></div>
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48 | <pre><table class="coverage">
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49 | <tr><td class="line-count quiet"><a name='L1'></a><a href='#L1'>1</a>
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171 | <a name='L123'></a><a href='#L123'>123</a></td><td class="line-coverage quiet"><span class="cline-any cline-yes">1x</span>
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293 | <span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">const Argument = require('./argument')
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294 | const TreeRegexp = require('./tree_regexp')
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295 | const ParameterType = require('./parameter_type')
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296 | const {
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297 | UndefinedParameterTypeError,
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298 | CucumberExpressionError,
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299 | } = require('./errors')
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300 |
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301 | // RegExps with the g flag are stateful in JavaScript. In order to be able
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302 | // to reuse them we have to wrap them in a function.
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303 | // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp/test
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304 |
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305 | // Does not include (){} characters because they have special meaning
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306 | const ESCAPE_REGEXP = () => /([\\^[$.|?*+])/g
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307 | const PARAMETER_REGEXP = () => /(\\\\)?{([^}]*)}/g
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308 | const OPTIONAL_REGEXP = () => /(\\\\)?\(([^)]+)\)/g
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309 | const ALTERNATIVE_NON_WHITESPACE_TEXT_REGEXP = () =>
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310 | /([^\s^/]+)((\/[^\s^/]+)+)/g
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311 | const DOUBLE_ESCAPE = '\\\\'
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312 | const PARAMETER_TYPES_CANNOT_BE_ALTERNATIVE =
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313 | 'Parameter types cannot be alternative: '
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314 | const PARAMETER_TYPES_CANNOT_BE_OPTIONAL =
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315 | 'Parameter types cannot be optional: '
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316 |
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317 | class CucumberExpression {
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318 | /**
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319 | * @param expression
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320 | * @param parameterTypeRegistry
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321 | */
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322 | constructor(expression, parameterTypeRegistry) {
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323 | this._expression = expression
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324 | this._parameterTypes = []
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325 |
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326 | expression = this.processEscapes(expression)
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327 | expression = this.processOptional(expression)
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328 | expression = this.processAlternation(expression)
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329 | expression = this.processParameters(expression, parameterTypeRegistry)
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330 | expression = `^${expression}$`
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331 |
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332 | this._treeRegexp = new TreeRegexp(expression)
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333 | }
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334 |
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335 | processEscapes(expression) {
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336 | return expression.replace(ESCAPE_REGEXP(), '\\$1')
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337 | }
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338 |
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339 | processOptional(expression) {
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340 | return expression.replace(OPTIONAL_REGEXP(), (match, p1, p2) => {
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341 | if (p1 === DOUBLE_ESCAPE) {
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342 | return `\\(${p2}\\)`
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343 | }
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344 | this._checkNoParameterType(p2, PARAMETER_TYPES_CANNOT_BE_OPTIONAL)
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345 | return `(?:${p2})?`
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346 | })
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347 | }
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348 |
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349 | processAlternation(expression) {
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350 | return expression.replace(
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351 | ALTERNATIVE_NON_WHITESPACE_TEXT_REGEXP(),
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352 | match => {
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353 | // replace \/ with /
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354 | // replace / with |
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355 | const replacement = match.replace(/\//g, '|').replace(/\\\|/g, '/')
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356 | if (replacement.indexOf('|') !== -1) {
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357 | for (const part of replacement.split(/\|/)) {
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358 | this._checkNoParameterType(
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359 | part,
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360 | PARAMETER_TYPES_CANNOT_BE_ALTERNATIVE
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361 | )
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362 | }
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363 | return `(?:${replacement})`
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364 | } else {
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365 | return replacement
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366 | }
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367 | }
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368 | )
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369 | }
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370 |
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371 | processParameters(expression, parameterTypeRegistry) {
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372 | return expression.replace(PARAMETER_REGEXP(), (match, p1, p2) => {
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373 | if (p1 === DOUBLE_ESCAPE) return `\\{${p2}\\}`
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374 |
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375 | const typeName = p2
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376 | ParameterType.checkParameterTypeName(typeName)
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377 | const parameterType = parameterTypeRegistry.lookupByTypeName(typeName)
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378 | if (!parameterType) throw new UndefinedParameterTypeError(typeName)
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379 | this._parameterTypes.push(parameterType)
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380 | return buildCaptureRegexp(parameterType.regexps)
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381 | })
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382 | }
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383 |
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384 | match(text) {
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385 | return Argument.build(this._treeRegexp, text, this._parameterTypes)
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386 | }
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387 |
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388 | get regexp() {
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389 | return this._treeRegexp.regexp
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390 | }
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391 |
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392 | get source() {
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393 | return this._expression
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394 | }
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395 |
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396 | _checkNoParameterType(s, message) {
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397 | if (s.match(PARAMETER_REGEXP())) {
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398 | throw new CucumberExpressionError(message + this.source)
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399 | }
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400 | }
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401 | }
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402 |
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403 | function buildCaptureRegexp(regexps) {
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404 | if (regexps.length === 1) {
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405 | return `(${regexps[0]})`
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406 | }
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407 |
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408 | const captureGroups = regexps.map(group => {
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409 | return `(?:${group})`
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410 | })
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411 |
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412 | return `(${captureGroups.join('|')})`
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413 | }
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414 | module.exports = CucumberExpression
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415 | </pre></td></tr>
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416 | </table></pre>
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417 | <div class='push'></div>
|
418 | </div>
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419 | <div class='footer quiet pad2 space-top1 center small'>
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420 | Code coverage
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421 | generated by <a href="https://istanbul.js.org/" target="_blank">istanbul</a> at Fri Mar 22 2019 15:35:22 GMT+0000 (Coordinated Universal Time)
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422 | </div>
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423 | </div>
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424 | <script src="prettify.js"></script>
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425 | <script>
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426 | window.onload = function () {
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427 | if (typeof prettyPrint === 'function') {
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428 | prettyPrint();
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429 | }
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430 | };
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