| // Copyright (C) 2018 Peter Wong. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| /*--- |
| esid: pending |
| description: Behavior with a custom RegExp exec |
| info: | |
| %RegExpStringIteratorPrototype%.next ( ) |
| [...] |
| 9. Let match be ? RegExpExec(R, S). |
| |
| Runtime Semantics: RegExpExec ( R, S ) |
| 1. Assert: Type(R) is Object. |
| 2. Assert: Type(S) is String. |
| 3. Let exec be ? Get(R, "exec"). |
| 4. If IsCallable(exec) is true, then |
| a. Let result be ? Call(exec, R, « S »). |
| b. If Type(result) is neither Object or Null, throw a TypeError exception. |
| c. Return result. |
| features: [Symbol.matchAll] |
| ---*/ |
| |
| var regexp = /./g; |
| var str = 'abc'; |
| var iter = regexp[Symbol.matchAll](str); |
| |
| var callArgs, callCount; |
| function callNextWithExecReturnValue(returnValue) { |
| callArgs = undefined; |
| callCount = 0; |
| |
| RegExp.prototype.exec = function() { |
| callArgs = arguments; |
| callCount++; |
| return returnValue; |
| } |
| |
| return iter.next(); |
| } |
| |
| var firstExecReturnValue = ['ab']; |
| var result = callNextWithExecReturnValue(firstExecReturnValue); |
| assert.sameValue(result.value, firstExecReturnValue); |
| assert(!result.done); |
| |
| assert.sameValue(callArgs.length, 1); |
| assert.sameValue(callArgs[0], str); |
| assert.sameValue(callCount, 1); |
| |
| result = callNextWithExecReturnValue(null); |
| assert.sameValue(result.value, undefined); |
| assert(result.done); |
| |
| assert.sameValue(callArgs.length, 1); |
| assert.sameValue(callArgs[0], str); |
| assert.sameValue(callCount, 1); |