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.
80 lines
2.6 KiB
C++
80 lines
2.6 KiB
C++
/*
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* Copyright (c) 2022, Idan Horowitz <idan.horowitz@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/Intl/Collator.h>
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#include <LibJS/Runtime/Intl/CollatorCompareFunction.h>
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namespace JS::Intl {
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GC_DEFINE_ALLOCATOR(CollatorCompareFunction);
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GC::Ref<CollatorCompareFunction> CollatorCompareFunction::create(Realm& realm, Collator& collator)
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{
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return realm.create<CollatorCompareFunction>(realm, collator);
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}
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CollatorCompareFunction::CollatorCompareFunction(Realm& realm, Collator& collator)
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: NativeFunction(realm.intrinsics().function_prototype())
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, m_collator(collator)
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{
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}
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void CollatorCompareFunction::initialize(Realm& realm)
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{
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Base::initialize(realm);
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auto& vm = this->vm();
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define_direct_property(vm.names.length, Value(2), Attribute::Configurable);
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define_direct_property(vm.names.name, PrimitiveString::create(vm, String {}), Attribute::Configurable);
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}
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void CollatorCompareFunction::visit_edges(Visitor& visitor)
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{
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Base::visit_edges(visitor);
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visitor.visit(m_collator);
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}
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// 10.3.3.1 Collator Compare Functions, https://tc39.es/ecma402/#sec-collator-compare-functions
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ThrowCompletionOr<Value> CollatorCompareFunction::call()
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{
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auto& vm = this->vm();
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// 1. Let collator be F.[[Collator]].
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// 2. Assert: Type(collator) is Object and collator has an [[InitializedCollator]] internal slot.
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// 3. If x is not provided, let x be undefined.
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// 4. If y is not provided, let y be undefined.
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// 5. Let X be ? ToString(x).
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auto x = TRY(vm.argument(0).to_utf16_string(vm));
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// 6. Let Y be ? ToString(y).
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auto y = TRY(vm.argument(1).to_utf16_string(vm));
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// 7. Return CompareStrings(collator, X, Y).
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return compare_strings(m_collator, x, y);
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}
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// 10.3.3.2 CompareStrings ( collator, x, y ), https://tc39.es/ecma402/#sec-collator-comparestrings
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int compare_strings(Collator const& collator, Utf16View const& x, Utf16View const& y)
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{
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auto result = collator.collator().compare(x, y);
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// The result is intended to correspond with a sort order of String values according to the effective locale and
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// collation options of collator, and will be negative when x is ordered before y, positive when x is ordered after
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// y, and zero in all other cases (representing no relative ordering between x and y).
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switch (result) {
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case Unicode::Collator::Order::Before:
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return -1;
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case Unicode::Collator::Order::Equal:
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return 0;
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case Unicode::Collator::Order::After:
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return 1;
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}
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VERIFY_NOT_REACHED();
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}
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}
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