BKE_attribute_filters.hh

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/* SPDX-FileCopyrightText: 2023 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */

 
#pragma once
 
#include "BKE_attribute_filter.hh"
 
#include "BLI_set.hh"
 
namespace blender::bke {

template<typename Fn> struct AttributeFilterFromFunc : public AttributeFilter {
 private:
  Fn fn_;
 
  static_assert(std::is_invocable_r_v<Result, Fn, StringRef>);
 
 public:
  constexpr AttributeFilterFromFunc(Fn fn) : fn_(std::move(fn)) {}
 
  Result filter(const StringRef name) const override
  {
    return fn_(name);
  }
};

inline auto attribute_filter_with_skip_ref(AttributeFilter filter, const Span<StringRef> skip)
{
  return AttributeFilterFromFunc([filter, skip](const StringRef name) {
    if (skip.contains(name)) {
      return AttributeFilter::Result::AllowSkip;
    }
    return filter.filter(name);
  });
}

template<typename StringT>
inline auto attribute_filter_with_skip_ref(AttributeFilter filter, const Set<StringT> &skip)
{
  return AttributeFilterFromFunc([filter, &skip](const StringRef name) {
    if (skip.contains_as(name)) {
      return AttributeFilter::Result::AllowSkip;
    }
    return filter.filter(name);
  });
}

inline auto attribute_filter_from_skip_ref(const Span<StringRef> skip)
{
  return AttributeFilterFromFunc([skip](const StringRef name) {
    if (skip.contains(name)) {
      return AttributeFilter::Result::AllowSkip;
    }
    return AttributeFilter::Result::Process;
  });
}

template<typename StringT> inline auto attribute_filter_from_skip_ref(const Set<StringT> &skip)
{
  return AttributeFilterFromFunc([&skip](const StringRef name) {
    if (skip.contains_as(name)) {
      return AttributeFilter::Result::AllowSkip;
    }
    return AttributeFilter::Result::Process;
  });
}
 
}  // namespace blender::bke