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#ifndef FILTER_H_932BA9C6
#define FILTER_H_932BA9C6
#include <list>
#include <string>
#include <memory>
#include "../vendor/hkutil/vendor/variant.hpp"
#include "../vendor/hkutil/hkutil/recptr.h"
#include "field.h"
#include "enums.h"
namespace verbly {
class filter {
public:
enum class type {
empty,
singleton,
group,
mask
};
enum class comparison {
int_equals,
int_does_not_equal,
int_is_at_least,
int_is_greater_than,
int_is_at_most,
int_is_less_than,
boolean_equals,
string_equals,
string_does_not_equal,
string_is_like,
string_is_not_like,
is_null,
is_not_null,
matches,
does_not_match,
hierarchally_matches,
does_not_hierarchally_match,
field_equals,
field_does_not_equal
};
// Accessors
type getType() const
{
return type_;
}
// Empty
filter() = default;
// Singleton
filter(field filterField, comparison filterType, int filterValue);
filter(field filterField, comparison filterType, std::string filterValue);
filter(field filterField, comparison filterType, bool filterValue);
filter(field filterField, comparison filterType);
filter(field joinOn, comparison filterType, filter joinCondition);
filter(field filterField, comparison filterType, field compareField);
field getField() const;
comparison getComparison() const;
filter getJoinCondition() const;
std::string getStringArgument() const;
int getIntegerArgument() const;
bool getBooleanArgument() const;
field getCompareField() const;
// Group
explicit filter(bool orlogic);
bool getOrlogic() const;
filter operator+(filter condition) const;
filter& operator+=(filter condition);
using const_iterator = std::list<filter>::const_iterator;
const_iterator begin() const;
const_iterator end() const;
// Mask
filter(std::string name, bool internal, filter subfilter);
const std::string& getMaskName() const;
bool isMaskInternal() const;
const filter& getMaskFilter() const;
// Negation
filter operator!() const;
// Groupifying
filter operator&&(filter condition) const;
filter operator||(filter condition) const;
filter& operator&=(filter condition);
filter& operator|=(filter condition);
// Maskifying
static filter mask(std::string name, filter subfilter);
// Utility
filter normalize(object context) const;
filter compact() const;
private:
using rec_filter = hatkirby::recptr<filter>;
struct singleton_type {
field filterField;
comparison filterType;
mpark::variant<
mpark::monostate,
rec_filter,
std::string,
int,
bool,
field> data;
};
struct group_type {
std::list<filter> children;
bool orlogic;
};
struct mask_type {
std::string name;
bool internal;
rec_filter subfilter;
};
using variant_type =
mpark::variant<
mpark::monostate,
singleton_type,
group_type,
mask_type>;
type type_ = type::empty;
variant_type variant_;
};
};
#endif /* end of include guard: FILTER_H_932BA9C6 */
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