2692db8699
Note that as of this commit, there aren't any such throwers, and the call site in Heap::allocate will drop exceptions on the floor. This commit only serves to change the declaration of the overrides, make sure they return an empty value, and to propagate OOM errors frm their base initialize invocations.
77 lines
2.4 KiB
C++
77 lines
2.4 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 <AK/Utf8View.h>
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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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NonnullGCPtr<CollatorCompareFunction> CollatorCompareFunction::create(Realm& realm, Collator& collator)
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{
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return realm.heap().allocate<CollatorCompareFunction>(realm, 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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ThrowCompletionOr<void> CollatorCompareFunction::initialize(Realm&)
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{
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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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return {};
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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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double compare_strings(Collator& collator, Utf8View const& x, Utf8View const& y)
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{
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// FIXME: Implement https://unicode.org/reports/tr10
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(void)collator;
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auto x_iterator = x.begin();
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auto y_iterator = y.begin();
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for (; x_iterator != x.end() && y_iterator != y.end(); ++x_iterator, ++y_iterator) {
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if (*x_iterator != *y_iterator)
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return static_cast<double>(*x_iterator) - static_cast<double>(*y_iterator);
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}
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if (x_iterator != x.end())
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return 1.0;
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if (y_iterator != y.end())
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return -1.0;
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return 0.0;
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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_string(vm));
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// 6. Let Y be ? ToString(y).
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auto y = TRY(vm.argument(1).to_string(vm));
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// 7. Return CompareStrings(collator, X, Y).
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return compare_strings(m_collator, x.code_points(), y.code_points());
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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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}
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