import { CompilationUnitContext } from './parser/JavaParser';
import { JavaParserListener } from './parser/JavaParserListener';
import { JavaParserVisitor } from './parser/JavaParserVisitor';
import { AbstractParseTreeVisitor } from 'antlr4ts/tree/AbstractParseTreeVisitor';
import { ParseTreeVisitor } from 'antlr4ts/tree/ParseTreeVisitor';
import { RuleNode } from 'antlr4ts/tree/RuleNode';
/**
 * Parses the given source code and returns the AST
 * @param source Java source code to parse
 */
export declare function parse(source: string): ParseTree;
export interface ParseTree extends CompilationUnitContext {
}
/**
 * Walks a parse tree
 * @see https://github.com/antlr/antlr4/blob/master/doc/listeners.md
 */
export declare function walk(listener: JavaParserListener, tree: ParseTree): void;
export { JavaParserListener } from './parser/JavaParserListener';
/**
 * Create a parse tree visitor
 */
export declare function createVisitor<T>(visitor: Visitor<T>): ConcreteVisitor<T>;
export declare function createVisitor(visitor: VoidVisitor): ConcreteVisitor<void>;
export interface Visitor<T> extends AbstractVisitor<T>, OmitStrict<JavaParserVisitor<T>, NonOverridableMethods> {
}
export interface VoidVisitor extends OmitStrict<Visitor<void>, 'defaultResult' | 'aggregateResult'> {
}
type NonOverridableMethods = keyof ParseTreeVisitor<any>;
type OmitStrict<T, K extends keyof T> = Omit<T, K>;
export interface ConcreteVisitor<T> extends AbstractParseTreeVisitor<T> {
}
interface AbstractVisitor<T> {
    /**
     * Gets the default value returned by visitor methods. This value is
     * returned by the default implementations of
     * {@link #visitTerminal visitTerminal}, {@link #visitErrorNode visitErrorNode}.
     * The default implementation of {@link #visitChildren visitChildren}
     * initializes its aggregate result to this value.
     *
     * @return The default value returned by visitor methods.
     */
    defaultResult: () => T;
    /**
     * Aggregates the results of visiting multiple children of a node. After
     * either all children are visited or {@link #shouldVisitNextChild} returns
     * {@code false}, the aggregate value is returned as the result of
     * {@link #visitChildren}.
     *
     * <p>The default implementation returns {@code nextResult}, meaning
     * {@link #visitChildren} will return the result of the last child visited
     * (or return the initial value if the node has no children).</p>
     *
     * @param aggregate The previous aggregate value. In the default
     * implementation, the aggregate value is initialized to
     * {@link #defaultResult}, which is passed as the {@code aggregate} argument
     * to this method after the first child node is visited.
     * @param nextResult The result of the immediately preceeding call to visit
     * a child node.
     *
     * @return The updated aggregate result.
     */
    aggregateResult: (aggregate: T, nextResult: T) => T;
    /**
     * This method is called after visiting each child in
     * {@link #visitChildren}. This method is first called before the first
     * child is visited; at that point {@code currentResult} will be the initial
     * value (in the default implementation, the initial value is returned by a
     * call to {@link #defaultResult}. This method is not called after the last
     * child is visited.
     *
     * <p>The default implementation always returns {@code true}, indicating that
     * {@code visitChildren} should only return after all children are visited.
     * One reason to override this method is to provide a "short circuit"
     * evaluation option for situations where the result of visiting a single
     * child has the potential to determine the result of the visit operation as
     * a whole.</p>
     *
     * @param node The {@link RuleNode} whose children are currently being
     * visited.
     * @param currentResult The current aggregate result of the children visited
     * to the current point.
     *
     * @return {@code true} to continue visiting children. Otherwise return
     * {@code false} to stop visiting children and immediately return the
     * current aggregate result from {@link #visitChildren}.
     */
    shouldVisitNextChild?: (node: RuleNode, currentResult: T) => boolean;
}
export * from './parser/JavaContexts';