code: function(i, query) {
        if(this.COMPARISON_OPERATORS.indexOf(query.substr(i,3)) >= 0)  return [i+3, new this(query.substr(i,3))];
        else if(this.COMPARISON_OPERATORS.indexOf(query.substr(i,2)) >= 0) return [i+2, new this(query.substr(i,2))];
        else if(this.COMPARISON_OPERATORS.indexOf(query.substr(i,1)) >= 0) return [i+1, new this(query.substr(i,1))];
        else return null;
      }
docs: SpahQL.Token.ComparisonOperator.parseAt(i, query) -> Array\[resumeIndex, foundToken\] or null
  
  Identifies a string literal at the given index in the given string query and returns null
  if no token is identified, or a tuple of terminating index and the instantiated token if successful.