b6bef6b688
Produce JS-visible string results as UTF-16 at their source, including numeric formatting, BigInt and BigFraction formatting, URI encoding, console formatting, parser errors, regular expression errors, Intl and Temporal records, LibUnicode locale boundaries, and LibWeb bindings. Handle fractional radix formatting through the UTF-16 builder view.
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, Utf16String {}), 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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