runtime/JSStringIterator.cpp

   1 /*
   2  * Copyright (C) 2015 Yusuke Suzuki <utatane.tea@gmail.com>.
   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. ``AS IS'' AND ANY
  14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
  17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #include "config.h"
  27 #include "JSStringIterator.h"
  28
  29 #include "JSCJSValueInlines.h"
  30 #include "JSCellInlines.h"
  31 #include "StructureInlines.h"
  32
  33 namespace JSC {
  34
  35 const ClassInfo JSStringIterator::s_info = { "String Iterator", &Base::s_info, 0, CREATE_METHOD_TABLE(JSStringIterator) };
  36
  37 void JSStringIterator::finishCreation(VM& vm, JSGlobalObject*, JSString* iteratedString)
  38 {
  39     Base::finishCreation(vm);
  40     ASSERT(inherits(info()));
  41     putDirect(vm, vm.propertyNames->iteratedStringPrivateName, iteratedString);
  42     putDirect(vm, vm.propertyNames->stringIteratorNextIndexPrivateName, jsNumber(0));
  43 }
  44
  45 JSValue JSStringIterator::iteratedValue(ExecState* exec) const
  46 {
  47     return getDirect(exec->vm(), exec->vm().propertyNames->iteratedStringPrivateName);
  48 }
  49
  50 JSStringIterator* JSStringIterator::clone(ExecState* exec)
  51 {
  52     VM& vm = exec->vm();
  53     JSValue iteratedString = getDirect(vm, vm.propertyNames->iteratedStringPrivateName);
  54     JSValue nextIndex = getDirect(vm, vm.propertyNames->stringIteratorNextIndexPrivateName);
  55
  56     auto clone = JSStringIterator::create(exec, exec->callee()->globalObject()->stringIteratorStructure(), asString(iteratedString));
  57     clone->putDirect(vm, vm.propertyNames->stringIteratorNextIndexPrivateName, nextIndex);
  58     return clone;
  59 }
  60
  61 } // namespace JSC