1 files changed, 129 insertions, 0 deletions
diff --git a/js/src/builtin/intl/NumberFormat.h b/js/src/builtin/intl/NumberFormat.h
new file mode 100644
index 0000000000..a4d552510f
--- /dev/null
+++ b/js/src/builtin/intl/NumberFormat.h
@@ -0,0 +1,129 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: set ts=8 sts=2 et sw=2 tw=80:
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef builtin_intl_NumberFormat_h
+#define builtin_intl_NumberFormat_h
+
+#include <stdint.h>
+
+#include "builtin/SelfHostingDefines.h"
+#include "js/Class.h"
+#include "vm/NativeObject.h"
+
+namespace mozilla::intl {
+class NumberFormat;
+class NumberRangeFormat;
+}  // namespace mozilla::intl
+
+namespace js {
+
+class NumberFormatObject : public NativeObject {
+ public:
+  static const JSClass class_;
+  static const JSClass& protoClass_;
+
+  static constexpr uint32_t INTERNALS_SLOT = 0;
+  static constexpr uint32_t UNUMBER_FORMATTER_SLOT = 1;
+  static constexpr uint32_t UNUMBER_RANGE_FORMATTER_SLOT = 2;
+  static constexpr uint32_t SLOT_COUNT = 3;
+
+  static_assert(INTERNALS_SLOT == INTL_INTERNALS_OBJECT_SLOT,
+                "INTERNALS_SLOT must match self-hosting define for internals "
+                "object slot");
+
+  // Estimated memory use for UNumberFormatter and UFormattedNumber
+  // (see IcuMemoryUsage).
+  static constexpr size_t EstimatedMemoryUse = 972;
+
+  // Estimated memory use for UNumberRangeFormatter and UFormattedNumberRange
+  // (see IcuMemoryUsage).
+  static constexpr size_t EstimatedRangeFormatterMemoryUse = 19894;
+
+  mozilla::intl::NumberFormat* getNumberFormatter() const {
+    const auto& slot = getFixedSlot(UNUMBER_FORMATTER_SLOT);
+    if (slot.isUndefined()) {
+      return nullptr;
+    }
+    return static_cast<mozilla::intl::NumberFormat*>(slot.toPrivate());
+  }
+
+  void setNumberFormatter(mozilla::intl::NumberFormat* formatter) {
+    setFixedSlot(UNUMBER_FORMATTER_SLOT, PrivateValue(formatter));
+  }
+
+  mozilla::intl::NumberRangeFormat* getNumberRangeFormatter() const {
+    const auto& slot = getFixedSlot(UNUMBER_RANGE_FORMATTER_SLOT);
+    if (slot.isUndefined()) {
+      return nullptr;
+    }
+    return static_cast<mozilla::intl::NumberRangeFormat*>(slot.toPrivate());
+  }
+
+  void setNumberRangeFormatter(mozilla::intl::NumberRangeFormat* formatter) {
+    setFixedSlot(UNUMBER_RANGE_FORMATTER_SLOT, PrivateValue(formatter));
+  }
+
+ private:
+  static const JSClassOps classOps_;
+  static const ClassSpec classSpec_;
+
+  static void finalize(JS::GCContext* gcx, JSObject* obj);
+};
+
+/**
+ * Returns a new instance of the standard built-in NumberFormat constructor.
+ * Self-hosted code cannot cache this constructor (as it does for others in
+ * Utilities.js) because it is initialized after self-hosted code is compiled.
+ *
+ * Usage: numberFormat = intl_NumberFormat(locales, options)
+ */
+[[nodiscard]] extern bool intl_NumberFormat(JSContext* cx, unsigned argc,
+                                            Value* vp);
+
+/**
+ * Returns the numbering system type identifier per Unicode
+ * Technical Standard 35, Unicode Locale Data Markup Language, for the
+ * default numbering system for the given locale.
+ *
+ * Usage: defaultNumberingSystem = intl_numberingSystem(locale)
+ */
+[[nodiscard]] extern bool intl_numberingSystem(JSContext* cx, unsigned argc,
+                                               Value* vp);
+
+/**
+ * Returns a string representing the number x according to the effective
+ * locale and the formatting options of the given NumberFormat.
+ *
+ * Spec: ECMAScript Internationalization API Specification, 11.3.2.
+ *
+ * Usage: formatted = intl_FormatNumber(numberFormat, x, formatToParts)
+ */
+[[nodiscard]] extern bool intl_FormatNumber(JSContext* cx, unsigned argc,
+                                            Value* vp);
+
+/**
+ * Returns a string representing the number range «x - y» according to the
+ * effective locale and the formatting options of the given NumberFormat.
+ *
+ * Usage: formatted = intl_FormatNumberRange(numberFormat, x, y, formatToParts)
+ */
+[[nodiscard]] extern bool intl_FormatNumberRange(JSContext* cx, unsigned argc,
+                                                 Value* vp);
+
+#if DEBUG || MOZ_SYSTEM_ICU
+/**
+ * Returns an object with all available measurement units.
+ *
+ * Usage: units = intl_availableMeasurementUnits()
+ */
+[[nodiscard]] extern bool intl_availableMeasurementUnits(JSContext* cx,
+                                                         unsigned argc,
+                                                         Value* vp);
+#endif
+
+}  // namespace js
+
+#endif /* builtin_intl_NumberFormat_h */