/*!
 * Copyright 2016 The ANTLR Project. All rights reserved.
 * Licensed under the BSD-3-Clause license. See LICENSE file in the project root for license information.
 */
import { Interval } from './misc/Interval';
import { IntStream } from './IntStream';
/** A source of characters for an ANTLR lexer. */
export interface CharStream extends IntStream {
    /**
     * This method returns the text for a range of characters within this input
     * stream. This method is guaranteed to not throw an exception if the
     * specified {@code interval} lies entirely within a marked range. For more
     * information about marked ranges, see {@link IntStream#mark}.
     *
     * @param interval an interval within the stream
     * @return the text of the specified interval
     *
     * @throws NullPointerException if {@code interval} is {@code null}
     * @throws IllegalArgumentException if {@code interval.a < 0}, or if
     * {@code interval.b < interval.a - 1}, or if {@code interval.b} lies at or
     * past the end of the stream
     * @throws UnsupportedOperationException if the stream does not support
     * getting the text of the specified interval
     */
    getText(interval: Interval): string;
}