import { CaretParser, CaretLeafParselet, TokensTag } from "@caret-js/core";
import { FractionToken } from "../tokens/fraction";
import { DivideNode } from "../nodes/divide";

export class FractionParselet extends CaretLeafParselet {
  parse(parser: CaretParser): DivideNode {
    const token = parser.consume();
    this.assert(token instanceof FractionToken, "Expected FractionToken");

    return DivideNode.from(
      parser.parseSubStrand(token.numerator),
      parser.parseSubStrand(token.denominator)
    ).addTag(new TokensTag([token]));
  }
}