5dd5896588
This is a continuation of the previous commit. Calling initialize() is the first thing that's done after allocating a cell on the JS heap - and in the common case of allocating an object, that's where properties are assigned and intrinsics occasionally accessed. Since those are supposed to live on the realm eventually, this is another step into that direction.
77 lines
2.5 KiB
C++
77 lines
2.5 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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CollatorCompareFunction* CollatorCompareFunction::create(GlobalObject& global_object, Collator& collator)
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{
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auto& realm = *global_object.associated_realm();
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return global_object.heap().allocate<CollatorCompareFunction>(global_object, realm, collator);
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}
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CollatorCompareFunction::CollatorCompareFunction(Realm& realm, Collator& collator)
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: NativeFunction(*realm.global_object().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&)
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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, js_string(vm, String::empty()), Attribute::Configurable);
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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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auto& global_object = this->global_object();
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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(global_object));
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// 6. Let Y be ? ToString(y).
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auto y = TRY(vm.argument(1).to_string(global_object));
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// 7. Return CompareStrings(collator, X, Y).
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return compare_strings(m_collator, Utf8View(x), Utf8View(y));
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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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