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#pragma once
#include <set>
#include <string>
#include <vector>
#include <memory>
#include <mbgl/util/noncopyable.hpp>
namespace mbgl {
class BiDi;
class BiDiImpl;
std::u16string applyArabicShaping(const std::u16string&);
// StyledText pairs each code point in a string with an integer indicating
// the styling options to use for rendering that code point
// The data structure is intended to accomodate the reordering/interleaving
// of formatting that can happen when BiDi rearranges inputs
using StyledText = std::pair<std::u16string, std::vector<uint8_t>>;
class BiDi : private util::noncopyable {
public:
BiDi();
~BiDi();
// Given text in logical ordering and a set of line break points,
// return a set of lines in visual order with bidi and line breaking applied
std::vector<std::u16string> processText(const std::u16string&, std::set<std::size_t>);
// Same as processText but preserves per-code-point formatting information
std::vector<StyledText> processStyledText(const StyledText&, std::set<std::size_t>);
private:
void mergeParagraphLineBreaks(std::set<std::size_t>&);
std::vector<std::u16string> applyLineBreaking(std::set<std::size_t>);
std::u16string getLine(std::size_t start, std::size_t end);
std::u16string writeReverse(const std::u16string&, std::size_t, std::size_t);
std::unique_ptr<BiDiImpl> impl;
};
} // end namespace mbgl
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