Function getFilterFields

src/common/mapping/utils/L7LayerUtil.js:2084–2099

(filter)

function getFilterFields(filter) {
  const result = [];
  for (const exp of filter) {
    if (exp instanceof Array && exp[1] && typeof exp[1] === 'string') {
      result.push(exp[1]);
      continue;
    }
    if (exp instanceof Array) {
      const subResult = getFilterFields(exp);
      if (subResult && subResult.length > 0) {
        result.push(...subResult);
      }
    }
  }
  return result;
}