7025dd1fa7
Thread UTF-16 string input through JSON, script parsing, Date parsing, Intl option parsing, Temporal parsing, and the helper library boundaries that feed those parsers. Preserve ASCII fast paths where the source data is known to be ASCII.
58 lines
1.4 KiB
C++
58 lines
1.4 KiB
C++
/*
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* Copyright (c) 2020, Matthew Olsson <mattco@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibJS/Runtime/GlobalObject.h>
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#include <LibJS/Runtime/NativeFunction.h>
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#include <LibJS/Runtime/StringIterator.h>
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namespace JS {
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GC_DEFINE_ALLOCATOR(StringIterator);
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GC::Ref<StringIterator> StringIterator::create(Realm& realm, Utf16String string)
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{
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return realm.create<StringIterator>(move(string), realm.intrinsics().string_iterator_prototype());
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}
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StringIterator::StringIterator(Utf16String string, Object& prototype)
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: Object(ConstructWithPrototypeTag::Tag, prototype)
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, m_string(move(string))
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, m_iterator(m_string.begin())
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{
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}
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BuiltinIterator* StringIterator::as_builtin_iterator_if_next_is_not_redefined(Value next_method)
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{
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if (auto native_function = next_method.as_if<NativeFunction>()) {
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if (native_function->is_string_prototype_next_builtin())
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return this;
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}
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return nullptr;
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}
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ThrowCompletionOr<void> StringIterator::next(VM& vm, bool& done, Value& value)
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{
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if (m_done) {
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done = true;
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value = js_undefined();
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return {};
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}
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if (m_iterator == m_string.end()) {
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m_done = true;
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done = true;
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value = js_undefined();
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return {};
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}
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auto code_point = Utf16String::from_code_point(*m_iterator);
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++m_iterator;
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value = PrimitiveString::create(vm, move(code_point));
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return {};
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}
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}
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