reflow_result.h

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#pragma once
 
#include "di/container/vector/prelude.h"
#include "di/reflect/prelude.h"
#include "di/types/integers.h"
#include "ttx/terminal/absolute_position.h"
 
namespace ttx::terminal {
class ReflowResult {
private:
    struct ReflowRange {
        AbsolutePosition position;
        i64 dr = 0;
        i32 dc = 0;
        bool absolute_column { false };
 
        auto operator==(ReflowRange const&) const -> bool = default;
 
        constexpr friend auto tag_invoke(di::Tag<di::reflect>, di::InPlaceType<ReflowRange>) {
            return di::make_fields<"ReflowRange">(di::field<"position", &ReflowRange::position>,
                                                  di::field<"dr", &ReflowRange::dr>, di::field<"dc", &ReflowRange::dc>,
                                                  di::field<"absolute_column", &ReflowRange::absolute_column>);
        }
    };
 
public:
    void add_offset(AbsolutePosition position, i64 dr, i32 dc, bool absolute_column = false);

    void merge(ReflowResult&& other);

    auto map_position(AbsolutePosition position) const -> AbsolutePosition;
 
    auto operator==(ReflowResult const&) const -> bool = default;
 
    constexpr friend auto tag_invoke(di::Tag<di::reflect>, di::InPlaceType<ReflowResult>) {
        return di::make_fields<"ReflowResult">(di::field<"ranges", &ReflowResult::m_ranges>);
    }
 
private:
    di::Vector<ReflowRange> m_ranges;
};
}