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 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::same_as<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<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.