import { Lang } from "../lang";
import * as ast from "../ast";
/**
 * Parses a string as a C0 expression.
 *
 * @param str The string to parse as a C0 expression.
 * @param options.lang The language standard to parse. (Default C1)
 * @param options.types The set of strings to interpret as type identifiers.
 *
 * @throws IncompleteParseError if the parse is not a valid C0 expression,
 * but could be extended into a valid C0 expression.
 */
export declare function parseExpression(str: string, options?: {
    lang?: Lang;
    types?: Set<string>;
}): ast.Expression;
/**
 * Parses a string as a sequence of C0 statements.
 * NOTE: allows the final trailing semicolon to be present or absent.
 *
 * @param str The string to parse as a sequence of C0 statements.
 * @param options.lang The language standard to parse. (Default C1)
 * @param options.types The set of strings to interpret as type identifiers.
 *
 * @throws IncompleteParseError if the parse is not a valid C0 expression,
 * but could be extended into a valid C0 expression.
 */
export declare function parseStatement(str: string, options?: {
    lang?: Lang;
    types?: Set<string>;
}): ast.Statement[];
/**
 * Parses a program as a series of C0 statements.
 * NOTE: allows the final trailing semicolon to be present or absent.
 *
 * @param str The string to parse as a C0 program.
 * @param options.lang The language standard to parse. (Default C1)
 * @param options.types The set of strings to interpret as type identifiers.
 *
 * @throws IncompleteParseError if the parse is not a valid C0 expression,
 * but could be extended into a valid C0 expression.
 */
export declare function parseProgram(lang: Lang, str: string, typedefs?: Set<string>): ast.Declaration[];