caret / packages / math / src / nodes / positive.ts

import { TreeNode, h, t, VNode } from "@caret-js/core";
import { DecimalNode } from "./decimal";
import { MathExpressionTag } from "../tags/mathExpression";
import { CanBeAdjacentMultRightSideTag } from "../parselets/adjacentMultiplication";

export class PositiveNode extends TreeNode {
  constructor(public child: TreeNode) {
    super();
    this.addTag(new MathExpressionTag()).addTag(
      new CanBeAdjacentMultRightSideTag(false), // Negative nodes cannot be on the right side of adjacent multiplication (that would just be subtraction)
    );
  }

  static from(child: TreeNode): PositiveNode | DecimalNode {
    return new PositiveNode(child);
  }

  toDebugMathML(): VNode {
    return h("mrow", {}, h("mo", {}, t("+")), this.child.toDebugMathML());
  }
}