Variable parser

A Command parser.

Examples

Parse the principal variation attribute from an info command

import parser from "uci-parser-ts/parse/parser";
import InfoCommand from "uci-parser-ts/InfoCommand";
import PrincipalVariationAttribute from "uci-parser-ts/info/PrincipalVariationAttribute";

function* getUciLines(): Iterator<string> {
  // ...
}

for (const line of getUciLines()) {
  try {
    const command = parser.tryParse(line);
    if (command instanceof InfoCommand) {
      for (const attr of command.attributes) {
        if (attr instanceof PrincipalVariationInfoAttr) {
          console.log(attr.moves);
        }
      }
    }
  } catch (err) {
    // it is usually best to ignore invalid UCI commands.
  }
}