react-datascript/src/parseQueryAttributes.js

React bindings for datascript

import { read } from 'edn-js';


export default function parseQueryAttributes(query) {
  const parsedQuery = read(query.trim());
  const whereKeywordIndex = parsedQuery.indexOf(Symbol.for(':where'));
  const whereClauses = parsedQuery.slice(whereKeywordIndex + 1);

  //TODO:  Get this to work with rules + not/or/or-join + expression
  //clauses...  Also figure out different parse rules for pull syntax
  return whereClauses.map(([_, attr]) => attr)
    .reduce((attrMap, attr) => Object.assign(attrMap, { [attr]: true }), {});
}