chromium/third_party/blink/renderer/platform/text/bidi_paragraph.cc

// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/351564777): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif

#include "third_party/blink/renderer/platform/text//bidi_paragraph.h"

#include "third_party/blink/renderer/platform/text/icu_error.h"
#include "third_party/blink/renderer/platform/wtf/text/character_names.h"
#include "third_party/blink/renderer/platform/wtf/text/string_builder.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"

namespace blink {

bool BidiParagraph::SetParagraph(const String& text,
                                 std::optional<TextDirection> base_direction) { … }

// static
template <>
std::optional<TextDirection> BidiParagraph::BaseDirectionForString(
    base::span<const LChar> text,
    bool (*stop_at)(UChar)) { … }

// static
template <>
std::optional<TextDirection> BidiParagraph::BaseDirectionForString(
    base::span<const UChar> text,
    bool (*stop_at)(UChar)) { … }

// static
std::optional<TextDirection> BidiParagraph::BaseDirectionForString(
    const StringView& text,
    bool (*stop_at)(UChar)) { … }

// static
String BidiParagraph::StringWithDirectionalOverride(const StringView& text,
                                                    TextDirection direction) { … }

unsigned BidiParagraph::GetLogicalRun(unsigned start, UBiDiLevel* level) const { … }

void BidiParagraph::GetLogicalRuns(const String& text, Runs* runs) const { … }

void BidiParagraph::GetVisualRuns(const String& text, Runs* runs) const { … }

// static
void BidiParagraph::IndicesInVisualOrder(
    const Vector<UBiDiLevel, 32>& levels,
    Vector<int32_t, 32>* indices_in_visual_order_out) { … }

}  // namespace blink