// Copyright 2018 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef V8_INTL_SUPPORT
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#error Internationalization is expected to be enabled.
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#endif // V8_INTL_SUPPORT
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#ifndef V8_OBJECTS_JS_RELATIVE_TIME_FORMAT_H_
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#define V8_OBJECTS_JS_RELATIVE_TIME_FORMAT_H_
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#include "src/heap/factory.h"
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#include "src/isolate.h"
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#include "src/objects.h"
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#include "unicode/uversion.h"
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// Has to be the last include (doesn't have include guards):
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#include "src/objects/object-macros.h"
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namespace U_ICU_NAMESPACE {
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class RelativeDateTimeFormatter;
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}
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namespace v8 {
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namespace internal {
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class JSRelativeTimeFormat : public JSObject {
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public:
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// Initializes relative time format object with properties derived from input
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// locales and options.
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static MaybeHandle<JSRelativeTimeFormat> InitializeRelativeTimeFormat(
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Isolate* isolate,
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Handle<JSRelativeTimeFormat> relative_time_format_holder,
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Handle<Object> locales, Handle<Object> options);
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static Handle<JSObject> ResolvedOptions(
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Isolate* isolate, Handle<JSRelativeTimeFormat> format_holder);
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// Unpacks formatter object from corresponding JavaScript object.
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static icu::RelativeDateTimeFormatter* UnpackFormatter(
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Handle<JSRelativeTimeFormat> relative_time_format_holder);
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Handle<String> StyleAsString() const;
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Handle<String> NumericAsString() const;
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DECL_CAST(JSRelativeTimeFormat)
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// RelativeTimeFormat accessors.
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DECL_ACCESSORS(locale, String)
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DECL_ACCESSORS(formatter, Foreign)
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// Style: identifying the relative time format style used.
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//
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// ecma402/#sec-properties-of-intl-relativetimeformat-instances
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enum class Style {
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LONG, // Everything spelled out.
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SHORT, // Abbreviations used when possible.
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NARROW, // Use the shortest possible form.
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COUNT
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};
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inline void set_style(Style style);
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inline Style style() const;
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// Numeric: identifying whether numerical descriptions are always used, or
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// used only when no more specific version is available (e.g., "1 day ago" vs
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// "yesterday").
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//
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// ecma402/#sec-properties-of-intl-relativetimeformat-instances
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enum class Numeric {
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ALWAYS, // numerical descriptions are always used ("1 day ago")
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AUTO, // numerical descriptions are used only when no more specific
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// version is available ("yesterday")
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COUNT
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};
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inline void set_numeric(Numeric numeric);
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inline Numeric numeric() const;
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// Bit positions in |flags|.
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#define FLAGS_BIT_FIELDS(V, _) \
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V(StyleBits, Style, 2, _) \
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V(NumericBits, Numeric, 1, _)
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DEFINE_BIT_FIELDS(FLAGS_BIT_FIELDS)
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#undef FLAGS_BIT_FIELDS
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STATIC_ASSERT(Style::LONG <= StyleBits::kMax);
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STATIC_ASSERT(Style::SHORT <= StyleBits::kMax);
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STATIC_ASSERT(Style::NARROW <= StyleBits::kMax);
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STATIC_ASSERT(Numeric::AUTO <= NumericBits::kMax);
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STATIC_ASSERT(Numeric::ALWAYS <= NumericBits::kMax);
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// [flags] Bit field containing various flags about the function.
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DECL_INT_ACCESSORS(flags)
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DECL_PRINTER(JSRelativeTimeFormat)
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DECL_VERIFIER(JSRelativeTimeFormat)
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// Layout description.
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static const int kJSRelativeTimeFormatOffset = JSObject::kHeaderSize;
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static const int kLocaleOffset = kJSRelativeTimeFormatOffset + kPointerSize;
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static const int kFormatterOffset = kLocaleOffset + kPointerSize;
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static const int kFlagsOffset = kFormatterOffset + kPointerSize;
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static const int kSize = kFlagsOffset + kPointerSize;
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private:
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static Style getStyle(const char* str);
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static Numeric getNumeric(const char* str);
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DISALLOW_IMPLICIT_CONSTRUCTORS(JSRelativeTimeFormat);
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};
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} // namespace internal
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} // namespace v8
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#include "src/objects/object-macros-undef.h"
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#endif // V8_OBJECTS_JS_RELATIVE_TIME_FORMAT_H_
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