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Java Lang library for High Frequency Trading (Java 6+)
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/*
 *     Copyright (C) 2015  higherfrequencytrading.com
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU Lesser General Public License as published by
 *     the Free Software Foundation, either version 3 of the License.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU Lesser General Public License for more details.
 *
 *     You should have received a copy of the GNU Lesser General Public License
 *     along with this program.  If not, see .
 */

package net.openhft.lang.io;

import net.openhft.lang.model.constraints.NotNull;
import net.openhft.lang.model.constraints.Nullable;

import java.nio.BufferUnderflowException;

/**
 * @author peter.lawrey
 */
public interface ByteStringParser extends BytesCommon {
    /**
     * If set to true, the end of the Bytes will be the end of any consuming String, double or long.
     * If false, incomplete reads will throw a BufferUnderflowException

     * @param selfTerminate if true, the end of the Buffer is silent.
     */
    void selfTerminating(boolean selfTerminate);

    /**
     * @return if this Bytes self terminates.
     */
    boolean selfTerminating();

    /**
     * @return the next unsigned byte or -1 if selfTerminating and the end is reached.
     * @throws BufferUnderflowException if the end is reached and selfTerminating is false.
     */
    int readUnsignedByteOrThrow() throws BufferUnderflowException;

    /**
     * Return true or false, or null if it could not be detected
     * as true or false.  Case is not important
     *
     * false: f, false, n, no, 0
     *
     * true: t, true, y, yes, 1
     *
     * @param tester to detect the end of the text.
     * @return true, false, or null if neither.
     */
    Boolean parseBoolean(@NotNull StopCharTester tester) throws BufferUnderflowException;

    /**
     * Populate a StringBuilder with the UTF encoded text until the end.
     *
     * @param builder to zeroOut and append to.
     * @param tester  to detect when to stop.
     */
    void parseUtf8(@NotNull StringBuilder builder, @NotNull StopCharTester tester) throws BufferUnderflowException;

    @NotNull
    String parseUtf8(@NotNull StopCharTester tester) throws BufferUnderflowException;

    @Nullable
    > E parseEnum(@NotNull Class eClass, @NotNull StopCharTester tester) throws BufferUnderflowException;

    @NotNull
    MutableDecimal parseDecimal(@NotNull MutableDecimal decimal) throws BufferUnderflowException;

    /**
     * @return the next long, stopping at the first invalid character
     */
    long parseLong() throws BufferUnderflowException;

    /**
     * @param base to use.
     * @return the next long, stopping at the first invalid character
     */
    long parseLong(int base) throws BufferUnderflowException;

    double parseDouble() throws BufferUnderflowException;

    /**
     * Make sure we just read a stop character
     *
     * @param tester to stop at
     * @return true if we stopped at a stop character, false if we ran out of data.
     */
    boolean stepBackAndSkipTo(@NotNull StopCharTester tester);

    /**
     * Wind from this positionAddr to the end of the field
     *
     * @param tester to stop at
     * @return true if we stopped at a stop character, false if we ran out of data.
     */
    boolean skipTo(@NotNull StopCharTester tester);

    /**
     * Dump the contents of this Bytes as text in the Appendable.
     *
     * @param appendable to append to
     */
    void asString(Appendable appendable);

    /**
     * Dump the contents of Bytes as a CharSequence
     *
     * @return the CharSequence for these Bytes.
     */
    CharSequence asString();
}