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a0253af8c1
Intl.NumberFormat is meant to format both Number and BigInt types. To prepare for formatting BigInt types, this generalizes our NumberFormat implementation to operate on Value instances rather than doubles. All arithmetic is moved to static helpers that can now be updated with BigInt semantics.
63 lines
2.1 KiB
C++
63 lines
2.1 KiB
C++
/*
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* Copyright (c) 2021, Tim Flynn <trflynn89@pm.me>
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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/NumberFormat.h>
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#include <LibJS/Runtime/Intl/NumberFormatFunction.h>
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namespace JS::Intl {
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// 15.1.4 Number Format Functions, https://tc39.es/ecma402/#sec-number-format-functions
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NumberFormatFunction* NumberFormatFunction::create(GlobalObject& global_object, NumberFormat& number_format)
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{
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return global_object.heap().allocate<NumberFormatFunction>(global_object, number_format, *global_object.function_prototype());
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}
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NumberFormatFunction::NumberFormatFunction(NumberFormat& number_format, Object& prototype)
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: NativeFunction(prototype)
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, m_number_format(number_format)
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{
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}
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void NumberFormatFunction::initialize(GlobalObject& global_object)
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{
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auto& vm = this->vm();
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Base::initialize(global_object);
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define_direct_property(vm.names.length, Value(1), 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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ThrowCompletionOr<Value> NumberFormatFunction::call()
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{
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auto& global_object = this->global_object();
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auto& vm = global_object.vm();
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// 1. Let nf be F.[[NumberFormat]].
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// 2. Assert: Type(nf) is Object and nf has an [[InitializedNumberFormat]] internal slot.
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// 3. If value is not provided, let value be undefined.
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auto value = vm.argument(0);
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// 4. Let x be ? ToNumeric(value).
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value = TRY(value.to_numeric(global_object));
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// FIXME: Support BigInt number formatting.
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if (value.is_bigint())
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return vm.throw_completion<InternalError>(global_object, ErrorType::NotImplemented, "BigInt number formatting");
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// 5. Return ? FormatNumeric(nf, x).
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// Note: Our implementation of FormatNumeric does not throw.
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auto formatted = format_numeric(global_object, m_number_format, value);
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return js_string(vm, move(formatted));
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}
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void NumberFormatFunction::visit_edges(Cell::Visitor& visitor)
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{
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Base::visit_edges(visitor);
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visitor.visit(&m_number_format);
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}
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}
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