Handle createStringConstructor()

in lib/VM/JSLib/String.cpp [38:327]

• 281 lines of code
• 1 McCabe index (conditional complexity)

Handle<JSObject> createStringConstructor(Runtime &runtime) {
  auto stringPrototype = Handle<JSString>::vmcast(&runtime.stringPrototype);

  auto cons = defineSystemConstructor<JSString>(
      runtime,
      Predefined::getSymbolID(Predefined::String),
      stringConstructor,
      stringPrototype,
      1,
      CellKind::JSStringKind);

  // String.prototype.xxx methods.
  void *ctx = nullptr;
  defineMethod(
      runtime,
      stringPrototype,
      Predefined::getSymbolID(Predefined::toString),
      ctx,
      stringPrototypeToString,
      0);
  defineMethod(
      runtime,
      stringPrototype,
      Predefined::getSymbolID(Predefined::valueOf),
      ctx,
      stringPrototypeToString,
      0);
  defineMethod(
      runtime,
      stringPrototype,
      Predefined::getSymbolID(Predefined::charCodeAt),
      ctx,
      stringPrototypeCharCodeAt,
      1);
  defineMethod(
      runtime,
      stringPrototype,
      Predefined::getSymbolID(Predefined::codePointAt),
      ctx,
      stringPrototypeCodePointAt,
      1);
  defineMethod(
      runtime,
      stringPrototype,
      Predefined::getSymbolID(Predefined::concat),
      ctx,
      stringPrototypeConcat,
      1);
  defineMethod(
      runtime,
      stringPrototype,
      Predefined::getSymbolID(Predefined::substring),
      ctx,
      stringPrototypeSubstring,
      2);
  defineMethod(
      runtime,
      stringPrototype,
      Predefined::getSymbolID(Predefined::toLowerCase),
      ctx,
      stringPrototypeToLowerCase,
      0);
  defineMethod(
      runtime,
      stringPrototype,
      Predefined::getSymbolID(Predefined::toLocaleLowerCase),
      ctx,
      stringPrototypeToLocaleLowerCase,
      0);
  defineMethod(
      runtime,
      stringPrototype,
      Predefined::getSymbolID(Predefined::toUpperCase),
      ctx,
      stringPrototypeToUpperCase,
      0);
  defineMethod(
      runtime,
      stringPrototype,
      Predefined::getSymbolID(Predefined::toLocaleUpperCase),
      ctx,
      stringPrototypeToLocaleUpperCase,
      0);
  defineMethod(
      runtime,
      stringPrototype,
      Predefined::getSymbolID(Predefined::substr),
      ctx,
      stringPrototypeSubstr,
      2);
  defineMethod(
      runtime,
      stringPrototype,
      Predefined::getSymbolID(Predefined::trim),
      ctx,
      stringPrototypeTrim,
      0);
  defineMethod(
      runtime,
      stringPrototype,
      Predefined::getSymbolID(Predefined::localeCompare),
      ctx,
      stringPrototypeLocaleCompare,
      1);
  defineMethod(
      runtime,
      stringPrototype,
      Predefined::getSymbolID(Predefined::normalize),
      ctx,
      stringPrototypeNormalize,
      0);
  defineMethod(
      runtime,
      stringPrototype,
      Predefined::getSymbolID(Predefined::repeat),
      ctx,
      stringPrototypeRepeat,
      1);

  DefinePropertyFlags dpf = DefinePropertyFlags::getNewNonEnumerableFlags();
  auto trimStartRes =
      runtime.makeHandle<Callable>(runtime.ignoreAllocationFailure(defineMethod(
          runtime,
          stringPrototype,
          Predefined::getSymbolID(Predefined::trimStart),
          ctx,
          stringPrototypeTrimStart,
          0,
          dpf)));
  auto trimEndRes =
      runtime.makeHandle<Callable>(runtime.ignoreAllocationFailure(defineMethod(
          runtime,
          stringPrototype,
          Predefined::getSymbolID(Predefined::trimEnd),
          ctx,
          stringPrototypeTrimEnd,
          0,
          dpf)));

  defineProperty(
      runtime,
      stringPrototype,
      Predefined::getSymbolID(Predefined::trimLeft),
      trimStartRes);
  defineProperty(
      runtime,
      stringPrototype,
      Predefined::getSymbolID(Predefined::trimRight),
      trimEndRes);

  (void)defineMethod(
      runtime,
      stringPrototype,
      Predefined::getSymbolID(Predefined::SymbolIterator),
      Predefined::getSymbolID(Predefined::squareSymbolIterator),
      ctx,
      stringPrototypeSymbolIterator,
      0,
      dpf);

  // String.xxx() methods.
  defineMethod(
      runtime,
      cons,
      Predefined::getSymbolID(Predefined::fromCharCode),
      ctx,
      stringFromCharCode,
      1);
  defineMethod(
      runtime,
      cons,
      Predefined::getSymbolID(Predefined::fromCodePoint),
      ctx,
      stringFromCodePoint,
      1);
  defineMethod(
      runtime,
      cons,
      Predefined::getSymbolID(Predefined::raw),
      ctx,
      stringRaw,
      1);
  defineMethod(
      runtime,
      stringPrototype,
      Predefined::getSymbolID(Predefined::matchAll),
      ctx,
      stringPrototypeMatchAll,
      1);
  defineMethod(
      runtime,
      stringPrototype,
      Predefined::getSymbolID(Predefined::replaceAll),
      ctx,
      stringPrototypeReplaceAll,
      2);
  defineMethod(
      runtime,
      stringPrototype,
      Predefined::getSymbolID(Predefined::match),
      ctx,
      stringPrototypeMatch,
      1);
  defineMethod(
      runtime,
      stringPrototype,
      Predefined::getSymbolID(Predefined::padEnd),
      (void *)false,
      stringPrototypePad,
      1);
  defineMethod(
      runtime,
      stringPrototype,
      Predefined::getSymbolID(Predefined::padStart),
      (void *)true,
      stringPrototypePad,
      1);
  defineMethod(
      runtime,
      stringPrototype,
      Predefined::getSymbolID(Predefined::replace),
      ctx,
      stringPrototypeReplace,
      2);
  defineMethod(
      runtime,
      stringPrototype,
      Predefined::getSymbolID(Predefined::search),
      ctx,
      stringPrototypeSearch,
      1);
  defineMethod(
      runtime,
      stringPrototype,
      Predefined::getSymbolID(Predefined::charAt),
      ctx,
      stringPrototypeCharAt,
      1);
  defineMethod(
      runtime,
      stringPrototype,
      Predefined::getSymbolID(Predefined::endsWith),
      ctx,
      stringPrototypeEndsWith,
      1);
  defineMethod(
      runtime,
      stringPrototype,
      Predefined::getSymbolID(Predefined::slice),
      ctx,
      stringPrototypeSlice,
      2);
  defineMethod(
      runtime,
      stringPrototype,
      Predefined::getSymbolID(Predefined::split),
      ctx,
      stringPrototypeSplit,
      2);
  defineMethod(
      runtime,
      stringPrototype,
      Predefined::getSymbolID(Predefined::includes),
      (void *)false,
      stringPrototypeIncludesOrStartsWith,
      1);
  defineMethod(
      runtime,
      stringPrototype,
      Predefined::getSymbolID(Predefined::indexOf),
      ctx,
      stringPrototypeIndexOf,
      1);
  defineMethod(
      runtime,
      stringPrototype,
      Predefined::getSymbolID(Predefined::lastIndexOf),
      ctx,
      stringPrototypeLastIndexOf,
      1);
  defineMethod(
      runtime,
      stringPrototype,
      Predefined::getSymbolID(Predefined::startsWith),
      (void *)true,
      stringPrototypeIncludesOrStartsWith,
      1);

  return cons;
}