| // Copyright 2018 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef V8_INTL_SUPPORT |
| #error Internationalization is expected to be enabled. |
| #endif // V8_INTL_SUPPORT |
| |
| #ifndef V8_OBJECTS_JS_NUMBER_FORMAT_H_ |
| #define V8_OBJECTS_JS_NUMBER_FORMAT_H_ |
| |
| #include <set> |
| #include <string> |
| |
| #include "src/execution/isolate.h" |
| #include "src/heap/factory.h" |
| #include "src/objects/intl-objects.h" |
| #include "src/objects/managed.h" |
| #include "src/objects/objects.h" |
| |
| // Has to be the last include (doesn't have include guards): |
| #include "src/objects/object-macros.h" |
| |
| namespace U_ICU_NAMESPACE { |
| class UnicodeString; |
| namespace number { |
| class LocalizedNumberFormatter; |
| } // namespace number |
| } // namespace U_ICU_NAMESPACE |
| |
| namespace v8 { |
| namespace internal { |
| |
| class JSNumberFormat : public JSObject { |
| public: |
| // ecma402/#sec-initializenumberformat |
| V8_WARN_UNUSED_RESULT static MaybeHandle<JSNumberFormat> New( |
| Isolate* isolate, Handle<Map> map, Handle<Object> locales, |
| Handle<Object> options); |
| |
| // ecma402/#sec-unwrapnumberformat |
| V8_WARN_UNUSED_RESULT static MaybeHandle<JSNumberFormat> UnwrapNumberFormat( |
| Isolate* isolate, Handle<JSReceiver> format_holder); |
| |
| // ecma402/#sec-intl.numberformat.prototype.resolvedoptions |
| static Handle<JSObject> ResolvedOptions(Isolate* isolate, |
| Handle<JSNumberFormat> number_format); |
| |
| V8_WARN_UNUSED_RESULT static MaybeHandle<JSArray> FormatToParts( |
| Isolate* isolate, Handle<JSNumberFormat> number_format, |
| Handle<Object> numeric_obj); |
| |
| V8_WARN_UNUSED_RESULT static MaybeHandle<String> FormatNumeric( |
| Isolate* isolate, |
| const icu::number::LocalizedNumberFormatter& number_format, |
| Handle<Object> numeric_obj); |
| |
| V8_EXPORT_PRIVATE static const std::set<std::string>& GetAvailableLocales(); |
| |
| // Helper functions shared with JSPluralRules. |
| static int32_t MinimumIntegerDigitsFromSkeleton( |
| const icu::UnicodeString& skeleton); |
| static bool FractionDigitsFromSkeleton(const icu::UnicodeString& skeleton, |
| int32_t* minimum, int32_t* maximum); |
| static bool SignificantDigitsFromSkeleton(const icu::UnicodeString& skeleton, |
| int32_t* minimum, int32_t* maximum); |
| static icu::number::LocalizedNumberFormatter SetDigitOptionsToFormatter( |
| const icu::number::LocalizedNumberFormatter& icu_number_formatter, |
| const Intl::NumberFormatDigitOptions& digit_options); |
| |
| DECL_CAST(JSNumberFormat) |
| DECL_PRINTER(JSNumberFormat) |
| DECL_VERIFIER(JSNumberFormat) |
| |
| // Current ECMA 402 spec mandates to record (Min|Max)imumFractionDigits |
| // unconditionally while the unified number proposal eventually will only |
| // record either (Min|Max)imumFractionDigits or (Min|Max)imumSignaficantDigits |
| // Since LocalizedNumberFormatter can only remember one set, and during |
| // 2019-1-17 ECMA402 meeting that the committee decide not to take a PR to |
| // address that prior to the unified number proposal, we have to add these two |
| // 5 bits int into flags to remember the (Min|Max)imumFractionDigits while |
| // (Min|Max)imumSignaficantDigits is present. |
| // TODO(ftang) remove the following once we ship int-number-format-unified |
| // * Four inline functions: (set_)?(min|max)imum_fraction_digits |
| // * kFlagsOffset |
| // * #define FLAGS_BIT_FIELDS |
| // * DECL_INT_ACCESSORS(flags) |
| |
| inline int minimum_fraction_digits() const; |
| inline void set_minimum_fraction_digits(int digits); |
| |
| inline int maximum_fraction_digits() const; |
| inline void set_maximum_fraction_digits(int digits); |
| |
| // [[Style]] is one of the values "decimal", "percent", "currency", |
| // or "unit" identifying the style of the number format. |
| // Note: "unit" is added in proposal-unified-intl-numberformat |
| enum class Style { DECIMAL, PERCENT, CURRENCY, UNIT }; |
| |
| inline void set_style(Style style); |
| inline Style style() const; |
| |
| // Layout description. |
| DEFINE_FIELD_OFFSET_CONSTANTS(JSObject::kHeaderSize, |
| TORQUE_GENERATED_JSNUMBER_FORMAT_FIELDS) |
| |
| // Bit positions in |flags|. |
| #define FLAGS_BIT_FIELDS(V, _) \ |
| V(MinimumFractionDigitsBits, int, 5, _) \ |
| V(MaximumFractionDigitsBits, int, 5, _) \ |
| V(StyleBits, Style, 2, _) |
| |
| DEFINE_BIT_FIELDS(FLAGS_BIT_FIELDS) |
| #undef FLAGS_BIT_FIELDS |
| |
| STATIC_ASSERT(20 <= MinimumFractionDigitsBits::kMax); |
| STATIC_ASSERT(20 <= MaximumFractionDigitsBits::kMax); |
| STATIC_ASSERT(Style::DECIMAL <= StyleBits::kMax); |
| STATIC_ASSERT(Style::PERCENT <= StyleBits::kMax); |
| STATIC_ASSERT(Style::CURRENCY <= StyleBits::kMax); |
| STATIC_ASSERT(Style::UNIT <= StyleBits::kMax); |
| |
| DECL_ACCESSORS(locale, String) |
| DECL_ACCESSORS(icu_number_formatter, |
| Managed<icu::number::LocalizedNumberFormatter>) |
| DECL_ACCESSORS(bound_format, Object) |
| DECL_INT_ACCESSORS(flags) |
| |
| OBJECT_CONSTRUCTORS(JSNumberFormat, JSObject); |
| }; |
| |
| struct NumberFormatSpan { |
| int32_t field_id; |
| int32_t begin_pos; |
| int32_t end_pos; |
| |
| NumberFormatSpan() = default; |
| NumberFormatSpan(int32_t field_id, int32_t begin_pos, int32_t end_pos) |
| : field_id(field_id), begin_pos(begin_pos), end_pos(end_pos) {} |
| }; |
| |
| V8_EXPORT_PRIVATE std::vector<NumberFormatSpan> FlattenRegionsToParts( |
| std::vector<NumberFormatSpan>* regions); |
| |
| } // namespace internal |
| } // namespace v8 |
| |
| #include "src/objects/object-macros-undef.h" |
| |
| #endif // V8_OBJECTS_JS_NUMBER_FORMAT_H_ |