1  /*
 2   * Copyright (C) 2020 Apple Inc. All rights reserved.
 3   *
 4   * Redistribution and use in source and binary forms, with or without
 5   * modification, are permitted provided that the following conditions
 6   * are met:
 7   * 1. Redistributions of source code must retain the above copyright
 8   *    notice, this list of conditions and the following disclaimer.
 9   * 2. Redistributions in binary form must reproduce the above copyright
10   *    notice, this list of conditions and the following disclaimer in the
11   *    documentation and/or other materials provided with the distribution.
12   *
13   * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15   * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16   * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17   * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20   * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21   * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23   * THE POSSIBILITY OF SUCH DAMAGE.
24   */
25  
26  #include "config.h"
27  #include "IntlSegmentIteratorPrototype.h"
28  
29  #include "IntlSegmentIterator.h"
30  #include "JSCInlines.h"
31  
32  namespace JSC {
33  
34  static JSC_DECLARE_HOST_FUNCTION(IntlSegmentIteratorPrototypeFuncNext);
35  
36  }
37  
38  #include "IntlSegmentIteratorPrototype.lut.h"
39  
40  namespace JSC {
41  
42  const ClassInfo IntlSegmentIteratorPrototype::s_info = { "Segment String Iterator", &Base::s_info, &segmentIteratorPrototypeTable, nullptr, CREATE_METHOD_TABLE(IntlSegmentIteratorPrototype) };
43  
44  /* Source for IntlSegmentIteratorPrototype.lut.h
45  @begin segmentIteratorPrototypeTable
46    next             IntlSegmentIteratorPrototypeFuncNext               DontEnum|Function 0
47  @end
48  */
49  
50  IntlSegmentIteratorPrototype* IntlSegmentIteratorPrototype::create(VM& vm, Structure* structure)
51  {
52      auto* object = new (NotNull, allocateCell<IntlSegmentIteratorPrototype>(vm.heap)) IntlSegmentIteratorPrototype(vm, structure);
53      object->finishCreation(vm);
54      return object;
55  }
56  
57  Structure* IntlSegmentIteratorPrototype::createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
58  {
59      return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info());
60  }
61  
62  IntlSegmentIteratorPrototype::IntlSegmentIteratorPrototype(VM& vm, Structure* structure)
63      : Base(vm, structure)
64  {
65  }
66  
67  void IntlSegmentIteratorPrototype::finishCreation(VM& vm)
68  {
69      Base::finishCreation(vm);
70      ASSERT(inherits(vm, info()));
71      JSC_TO_STRING_TAG_WITHOUT_TRANSITION();
72  }
73  
74  // https://tc39.es/proposal-intl-segmenter/#sec-%segmentiteratorprototype%.next
75  JSC_DEFINE_HOST_FUNCTION(IntlSegmentIteratorPrototypeFuncNext, (JSGlobalObject* globalObject, CallFrame* callFrame))
76  {
77      VM& vm = globalObject->vm();
78      auto scope = DECLARE_THROW_SCOPE(vm);
79  
80      auto* segmentIterator = jsDynamicCast<IntlSegmentIterator*>(vm, callFrame->thisValue());
81      if (!segmentIterator)
82          return throwVMTypeError(globalObject, scope, "Intl.SegmentIterator.prototype.next called on value that's not an object initialized as a SegmentIterator"_s);
83  
84      RELEASE_AND_RETURN(scope, JSValue::encode(segmentIterator->next(globalObject)));
85  }
86  
87  } // namespace JSC