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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_SEGMENT_ITERATOR_H_
#define V8_OBJECTS_JS_SEGMENT_ITERATOR_H_
#include "src/execution/isolate.h"
#include "src/heap/factory.h"
#include "src/objects/js-segmenter.h"
#include "src/objects/managed.h"
#include "src/objects/objects.h"
#include "unicode/uversion.h"
// Has to be the last include (doesn't have include guards):
#include "src/objects/object-macros.h"
namespace U_ICU_NAMESPACE {
class BreakIterator;
class UnicodeString;
} // namespace U_ICU_NAMESPACE
namespace v8 {
namespace internal {
class JSSegmentIterator : public JSObject {
public:
// ecma402 #sec-CreateSegmentIterator
V8_WARN_UNUSED_RESULT static MaybeHandle<JSSegmentIterator> Create(
Isolate* isolate, icu::BreakIterator* icu_break_iterator,
JSSegmenter::Granularity granularity, Handle<String> string);
// ecma402 #sec-segment-iterator-prototype-next
V8_WARN_UNUSED_RESULT static MaybeHandle<JSReceiver> Next(
Isolate* isolate, Handle<JSSegmentIterator> segment_iterator_holder);
// ecma402 #sec-segment-iterator-prototype-following
static Maybe<bool> Following(
Isolate* isolate, Handle<JSSegmentIterator> segment_iterator_holder,
Handle<Object> from);
// ecma402 #sec-segment-iterator-prototype-preceding
static Maybe<bool> Preceding(
Isolate* isolate, Handle<JSSegmentIterator> segment_iterator_holder,
Handle<Object> from);
// ecma402 #sec-segment-iterator-prototype-index
static Handle<Object> Index(
Isolate* isolate, Handle<JSSegmentIterator> segment_iterator_holder);
Handle<String> GranularityAsString() const;
DECL_BOOLEAN_ACCESSORS(is_break_type_set)
// ecma402 #sec-segment-iterator-prototype-breakType
Handle<Object> BreakType() const;
V8_WARN_UNUSED_RESULT MaybeHandle<String> GetSegment(Isolate* isolate,
int32_t start,
int32_t end) const;
DECL_CAST(JSSegmentIterator)
// SegmentIterator accessors.
DECL_ACCESSORS(icu_break_iterator, Managed<icu::BreakIterator>)
DECL_ACCESSORS(unicode_string, Managed<icu::UnicodeString>)
DECL_PRINTER(JSSegmentIterator)
DECL_VERIFIER(JSSegmentIterator)
inline void set_granularity(JSSegmenter::Granularity granularity);
inline JSSegmenter::Granularity granularity() const;
// Bit positions in |flags|.
#define FLAGS_BIT_FIELDS(V, _) \
V(GranularityBits, JSSegmenter::Granularity, 2, _) \
V(BreakTypeSetBits, bool, 1, _)
DEFINE_BIT_FIELDS(FLAGS_BIT_FIELDS)
#undef FLAGS_BIT_FIELDS
STATIC_ASSERT(JSSegmenter::Granularity::GRAPHEME <= GranularityBits::kMax);
STATIC_ASSERT(JSSegmenter::Granularity::WORD <= GranularityBits::kMax);
STATIC_ASSERT(JSSegmenter::Granularity::SENTENCE <= GranularityBits::kMax);
// [flags] Bit field containing various flags about the function.
DECL_INT_ACCESSORS(flags)
// Layout description.
DEFINE_FIELD_OFFSET_CONSTANTS(JSObject::kHeaderSize,
TORQUE_GENERATED_JSSEGMENT_ITERATOR_FIELDS)
OBJECT_CONSTRUCTORS(JSSegmentIterator, JSObject);
};
} // namespace internal
} // namespace v8
#include "src/objects/object-macros-undef.h"
#endif // V8_OBJECTS_JS_SEGMENT_ITERATOR_H_
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