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// 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/heap/factory.h"
#include "src/isolate.h"
#include "src/objects.h"
#include "src/objects/intl-objects.h"
#include "src/objects/managed.h"
// Has to be the last include (doesn't have include guards):
#include "src/objects/object-macros.h"
namespace U_ICU_NAMESPACE {
class NumberFormat;
} // namespace U_ICU_NAMESPACE
namespace v8 {
namespace internal {
class JSNumberFormat : public JSObject {
public:
// ecma402/#sec-initializenumberformat
V8_WARN_UNUSED_RESULT static MaybeHandle<JSNumberFormat> Initialize(
Isolate* isolate, Handle<JSNumberFormat> number_format,
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, double number);
// A utility function used by the above JSNumberFormat::FormatToParts()
// and JSRelativeTimeFormat::FormatToParts().
// Format the number by using the icu::NumberFormat to get the field
// information. It add an object into the result array, starting from the
// start_index and return the total number of elements in the result array.
// For each object added as element, it set the substring of the field as
// "value", the field type as "type". If the unit is not null, it also set
// unit as "unit" to each added object.
V8_WARN_UNUSED_RESULT static Maybe<int> FormatToParts(
Isolate* isolate, Handle<JSArray> result, int start_index,
const icu::NumberFormat& fmt, double number, Handle<String> unit);
V8_WARN_UNUSED_RESULT static MaybeHandle<String> FormatNumber(
Isolate* isolate, const icu::NumberFormat& number_format, double number);
static std::set<std::string> GetAvailableLocales();
Handle<String> StyleAsString() const;
Handle<String> CurrencyDisplayAsString() const;
DECL_CAST(JSNumberFormat)
DECL_PRINTER(JSNumberFormat)
DECL_VERIFIER(JSNumberFormat)
// [[Style]] is one of the values "decimal", "percent" or "currency",
// identifying the style of the number format.
enum class Style {
DECIMAL,
PERCENT,
CURRENCY,
COUNT
};
inline void set_style(Style style);
inline Style style() const;
// [[CurrencyDisplay]] is one of the values "code", "symbol" or "name",
// identifying the display of the currency number format.
enum class CurrencyDisplay {
CODE,
SYMBOL,
NAME,
COUNT
};
inline void set_currency_display(CurrencyDisplay currency_display);
inline CurrencyDisplay currency_display() const;
// Layout description.
#define JS_NUMBER_FORMAT_FIELDS(V) \
V(kLocaleOffset, kTaggedSize) \
V(kICUNumberFormatOffset, kTaggedSize) \
V(kBoundFormatOffset, kTaggedSize) \
V(kFlagsOffset, kTaggedSize) \
/* Total size. */ \
V(kSize, 0)
DEFINE_FIELD_OFFSET_CONSTANTS(JSObject::kHeaderSize, JS_NUMBER_FORMAT_FIELDS)
#undef JS_NUMBER_FORMAT_FIELDS
// Bit positions in |flags|.
#define FLAGS_BIT_FIELDS(V, _) \
V(StyleBits, Style, 2, _) \
V(CurrencyDisplayBits, CurrencyDisplay, 2, _)
DEFINE_BIT_FIELDS(FLAGS_BIT_FIELDS)
#undef FLAGS_BIT_FIELDS
STATIC_ASSERT(Style::DECIMAL <= StyleBits::kMax);
STATIC_ASSERT(Style::PERCENT <= StyleBits::kMax);
STATIC_ASSERT(Style::CURRENCY <= StyleBits::kMax);
STATIC_ASSERT(CurrencyDisplay::CODE <= CurrencyDisplayBits::kMax);
STATIC_ASSERT(CurrencyDisplay::SYMBOL <= CurrencyDisplayBits::kMax);
STATIC_ASSERT(CurrencyDisplay::NAME <= CurrencyDisplayBits::kMax);
DECL_ACCESSORS(locale, String)
DECL_ACCESSORS(icu_number_format, Managed<icu::NumberFormat>)
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) {}
};
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_
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