import * as JSONElementType from "./jsonElement";
import * as Cmd from "../command";
import * as Expr from "../expression";
import * as Kw from "../keyword";
import Statement from "../runtime/statement";
/**
 * a default parser for Calcium language
 */
export default class Parser {
    readonly table: Map<Kw.Command, (stmt: Statement) => Cmd.Command>;
    /**
     *
     * @param table has default implementation when empty
     */
    constructor(table?: Map<Kw.Command, (stmt: Statement) => Cmd.Command>);
    /**
     * used by `Call`.
     * @param args arguments given to a function
     * @returns converted objects that will be evaluated in runtime
     */
    readArgs(args: JSONElementType.Any[]): Expr.Expression[];
    /**
     *
     * @param stmt a JSON array that represents one line to execute
     * @returns a command object to be executed
     */
    read(stmt: Statement): Cmd.Command;
    readBinOp(operator: string, expr: JSONElementType.BinaryOperation): Expr.BinaryOperation;
    /**
     * parse JSON element(s) and return `Expression`.
     * @param expr any JSON element
     * @returns an internal type or a reference
     */
    readExpr(expr: JSONElementType.Any): Expr.Expression;
    /**
     * parse a reference array and return an reference object used in runtime.
     * @param expr a reference array such as `["var", "x"]`
     * @returns a reference object to be evaluated later
     */
    readRef(expr: JSONElementType.Reference): Expr.Reference;
    readUnOp(operator: string, expr: JSONElementType.UnaryOperation): Expr.UnaryOperation;
}