donner::ElementLike Concept Reference

Concept for types that can be matched against a selector, such as a donner::svg::SVGElement. More...

#include "donner/base/element/ElementLike.h"

Concept definition

template<typename T>
concept donner::ElementLike = 
    requires(const T t, const T otherT, const xml::XMLQualifiedNameRef attribName) {
      { t.operator==(otherT) } -> std::same_as<bool>;
      { t.parentElement() } -> std::same_as<std::optional<T>>;
      { t.firstChild() } -> std::same_as<std::optional<T>>;
      { t.lastChild() } -> std::same_as<std::optional<T>>;
      { t.previousSibling() } -> std::same_as<std::optional<T>>;
      { t.nextSibling() } -> std::same_as<std::optional<T>>;
      { t.tagName() } -> std::convertible_to<xml::XMLQualifiedNameRef>;
      { t.isKnownType() } -> std::same_as<bool>;
      { t.id() } -> std::same_as<RcString>;
      { t.className() } -> std::same_as<RcString>;
      { t.getAttribute(attribName) } -> std::same_as<std::optional<RcString>>;
      {
        t.findMatchingAttributes(attribName)
      } -> std::same_as<SmallVector<xml::XMLQualifiedNameRef, 1>>;
    }

Detailed Description

Concept for types that can be matched against a selector, such as a donner::svg::SVGElement.

The type must support tree traversal operations, such as parentElement() and previousSibling(), and type and class information to match against the respective selectors.