web-dom: Simple dom Node structure.

src/web/web-dom/manifest.json

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+{
+    "$schema": "https://schemas.cute.engineering/stable/cutekit.manifest.component.v1",
+    "id": "web-dom",
+    "type": "lib",
+    "description": "Implementation of the HTML standard (https://html.spec.whatwg.org/multipage/)",
+    "requires": [
+        "karm-logger",
+        "web-base"
+    ]
+}

src/web/web-dom/node.h

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+#pragma once
+
+#include <karm-base/list.h>
+
+namespace Web::Dom {
+
+struct Node : public Meta::Static {
+    Node *_parent;
+    LlItem<Node> _siblings;
+    Ll<Node, &Node::_siblings> _children;
+
+    virtual ~Node() {}
+
+    /* --- Parent --- */
+
+    Node &parentNode() {
+        if (not _parent)
+            panic("node has no parent");
+        return *_parent;
+    }
+
+    Node const &parentNode() const {
+        if (not _parent)
+            panic("node has no parent");
+        return *_parent;
+    }
+
+    /* --- Children --- */
+
+    bool hasChildren() const {
+        return _children.len() > 0;
+    }
+
+    Node &firstChild() {
+        auto *res = _children._head;
+        if (not res)
+            panic("node has no children");
+        return *res;
+    }
+
+    Node const &firstChild() const {
+        auto *res = _children._head;
+        if (not res)
+            panic("node has no children");
+        return *res;
+    }
+
+    Node &lastChild() {
+        auto *res = _children._tail;
+        if (not res)
+            panic("node has no children");
+        return *res;
+    }
+
+    Node const &lastChild() const {
+        auto *res = _children._tail;
+        if (not res)
+            panic("node has no children");
+        return *res;
+    }
+
+    /* --- Siblings --- */
+
+    Node &previousSibling() {
+        auto *res = _siblings.prev;
+        if (not res)
+            panic("node has no previous sibling");
+        return *res;
+    }
+
+    Node const &previousSibling() const {
+        auto *res = _siblings.prev;
+        if (not res)
+            panic("node has no previous sibling");
+        return *res;
+    }
+
+    Node &nextSibling() {
+        auto *res = _siblings.next;
+        if (not res)
+            panic("node has no next sibling");
+        return *res;
+    }
+
+    Node const &nextSibling() const {
+        auto *res = _siblings.next;
+        if (not res)
+            panic("node has no next sibling");
+        return *res;
+    }
+};
+
+} // namespace Web::Dom

src/web/web-dom/tests/manifest.json

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+{
+    "$schema": "https://schemas.cute.engineering/stable/cutekit.manifest.component.v1",
+    "id": "web-dom-tests",
+    "type": "lib",
+    "props": {
+        "cpp-excluded": true
+    },
+    "requires": [
+        "web-dom",
+        "karm-test"
+    ],
+    "injects": [
+        "__tests__"
+    ]
+}

src/web/web-dom/tests/test-node.cpp

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+#include <karm-test/macros.h>
+#include <web-dom/node.h>
+
+namespace Web::Dom::Tests {
+
+test$(domTree) {
+    auto &root = *new Node();
+
+    delete &root;
+    return Ok();
+}
+
+} // namespace Web::Dom::Tests