import { Ast } from 'thingtalk';
import * as C from '../ast_manip';
import { SlotBag } from '../slot_bag';
declare function isFilterCompatibleWithInfo(info: SlotBag, filter: Ast.BooleanExpression): boolean;
declare function isFilterCompatibleWithResult(topResult: Ast.DialogueHistoryResultItem, filter: Ast.BooleanExpression): boolean;
export declare function isSlotCompatibleWithResult(topResult: Ast.DialogueHistoryResultItem, pname: string, infoValue: Ast.Value): boolean;
declare function isInfoPhraseCompatibleWithResult(topResult: Ast.DialogueHistoryResultItem, info: SlotBag): boolean;
/**
 * Check if asking a question on the parameters "questions" is allowed.
 *
 * This checks two things: that all parameters are valid output parameters of the table,
 * and all parameters are filterable.
 */
declare function isValidSearchQuestion(expr: Ast.Expression, questions: C.ParamSlot[]): boolean;
declare function addParametersFromContext(toInvocation: Ast.Invocation, fromInvocation: Ast.Invocation): Ast.Invocation;
declare function findChainParam(topResult: Ast.DialogueHistoryResultItem, action: Ast.Invocation): string | undefined;
export declare function isSimpleFilterExpression(table: Ast.Expression): table is Ast.FilterExpression;
export { isFilterCompatibleWithInfo, isFilterCompatibleWithResult, isInfoPhraseCompatibleWithResult, isValidSearchQuestion, findChainParam, addParametersFromContext, };