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/* Generated Fix Gateway message codec */
package uk.co.real_logic.artio.other.decoder;

import uk.co.real_logic.artio.decoder.AbstractSequenceResetDecoder;
import org.agrona.AsciiNumberFormatException;
import uk.co.real_logic.artio.dictionary.Generated;
import org.agrona.MutableDirectBuffer;
import org.agrona.AsciiSequenceView;
import static uk.co.real_logic.artio.dictionary.generation.CodecUtil.*;
import static uk.co.real_logic.artio.dictionary.SessionConstants.*;
import uk.co.real_logic.artio.builder.Decoder;
import uk.co.real_logic.artio.other.decoder.HeaderDecoder;
import uk.co.real_logic.artio.other.decoder.TrailerDecoder;
import uk.co.real_logic.artio.fields.ReadOnlyDecimalFloat;
import uk.co.real_logic.artio.fields.DecimalFloat;
import uk.co.real_logic.artio.util.MutableAsciiBuffer;
import uk.co.real_logic.artio.util.AsciiBuffer;
import uk.co.real_logic.artio.fields.LocalMktDateEncoder;
import uk.co.real_logic.artio.fields.UtcTimestampEncoder;
import java.nio.charset.StandardCharsets;
import java.util.Arrays;
import uk.co.real_logic.artio.dictionary.CharArraySet;
import org.agrona.collections.IntHashSet;
import org.agrona.collections.IntHashSet.IntIterator;
import uk.co.real_logic.artio.EncodingException;
import uk.co.real_logic.artio.dictionary.CharArrayWrapper;
import uk.co.real_logic.artio.builder.Encoder;
import uk.co.real_logic.artio.builder.CommonDecoderImpl;
import static java.nio.charset.StandardCharsets.US_ASCII;
import static uk.co.real_logic.artio.builder.Validation.CODEC_VALIDATION_ENABLED;
import static uk.co.real_logic.artio.builder.RejectUnknownField.CODEC_REJECT_UNKNOWN_FIELD_ENABLED;
import static uk.co.real_logic.artio.builder.RejectUnknownEnumValue.CODEC_REJECT_UNKNOWN_ENUM_VALUE_ENABLED;
import uk.co.real_logic.artio.other.*;
import uk.co.real_logic.artio.other.builder.SequenceResetEncoder;

@Generated("uk.co.real_logic.artio")
public class SequenceResetDecoder extends CommonDecoderImpl implements MessageDecoder, AbstractSequenceResetDecoder
{
    public final IntHashSet REQUIRED_FIELDS = new IntHashSet(2);

    {
        if (CODEC_VALIDATION_ENABLED)
        {
            REQUIRED_FIELDS.add(Constants.NEW_SEQ_NO);
        }
    }

    private final IntHashSet alreadyVisitedFields = new IntHashSet(4);

    private final IntHashSet unknownFields = new IntHashSet(10);

    private final IntHashSet missingRequiredFields = new IntHashSet(2);

    public boolean validate()
    {
        if (rejectReason != Decoder.NO_ERROR)
        {
            return false;
        }
        final IntIterator missingFieldsIterator = missingRequiredFields.iterator();
        final IntIterator unknownFieldsIterator = unknownFields.iterator();
        if (CODEC_REJECT_UNKNOWN_FIELD_ENABLED && unknownFieldsIterator.hasNext())
        {
            invalidTagId = unknownFieldsIterator.nextValue();
            rejectReason = Constants.ALL_FIELDS.contains(invalidTagId) ? 2 : 0;
            return false;
        }
        if (!header.validate())
        {
            invalidTagId = header.invalidTagId();
            rejectReason = header.rejectReason();
            return false;
        }
        else if (!trailer.validate())
        {
            invalidTagId = trailer.invalidTagId();
            rejectReason = trailer.rejectReason();
            return false;
        }
        if (missingFieldsIterator.hasNext())
        {
            invalidTagId = missingFieldsIterator.nextValue();
            rejectReason = 1;
            return false;
        }
        return true;
    }

    public static final long MESSAGE_TYPE = 52L;

    public static final String MESSAGE_TYPE_AS_STRING = "4";

    public static final char[] MESSAGE_TYPE_CHARS = MESSAGE_TYPE_AS_STRING.toCharArray();

    public static final byte[] MESSAGE_TYPE_BYTES = MESSAGE_TYPE_AS_STRING.getBytes(US_ASCII);

    public final IntHashSet messageFields = new IntHashSet(38);

    {
        messageFields.add(Constants.BEGIN_STRING);
        messageFields.add(Constants.BODY_LENGTH);
        messageFields.add(Constants.MSG_TYPE);
        messageFields.add(Constants.SENDER_COMP_ID);
        messageFields.add(Constants.TARGET_COMP_ID);
        messageFields.add(Constants.MSG_SEQ_NUM);
        messageFields.add(Constants.SENDER_SUB_ID);
        messageFields.add(Constants.SENDER_LOCATION_ID);
        messageFields.add(Constants.TARGET_SUB_ID);
        messageFields.add(Constants.TARGET_LOCATION_ID);
        messageFields.add(Constants.POSS_DUP_FLAG);
        messageFields.add(Constants.POSS_RESEND);
        messageFields.add(Constants.SENDING_TIME);
        messageFields.add(Constants.ORIG_SENDING_TIME);
        messageFields.add(Constants.LAST_MSG_SEQ_NUM_PROCESSED);
        messageFields.add(Constants.TEST_FIELD);
        messageFields.add(Constants.GAP_FILL_FLAG);
        messageFields.add(Constants.NEW_SEQ_NO);
        messageFields.add(Constants.CHECK_SUM);
    }

    private final TrailerDecoder trailer = new TrailerDecoder();

    public TrailerDecoder trailer()
    {
        return trailer;
    }

    private final HeaderDecoder header = new HeaderDecoder(trailer);

    public HeaderDecoder header()
    {
        return header;
    }

    private boolean gapFillFlag;

    private boolean hasGapFillFlag;

    /* GapFillFlag = 123 */
    public boolean gapFillFlag()
    {
        if (!hasGapFillFlag)
        {
            throw new IllegalArgumentException("No value for optional field: GapFillFlag");
        }

        return gapFillFlag;
    }

    public boolean hasGapFillFlag()
    {
        return hasGapFillFlag;
    }



    private int newSeqNo = MISSING_INT;

    /* NewSeqNo = 36 */
    public int newSeqNo()
    {
        return newSeqNo;
    }



    public int decode(final AsciiBuffer buffer, final int offset, final int length)
    {
        // Decode SequenceReset
        int seenFieldCount = 0;
        if (CODEC_VALIDATION_ENABLED)
        {
            missingRequiredFields.copy(REQUIRED_FIELDS);
            alreadyVisitedFields.clear();
        }
        this.buffer = buffer;
        final int end = offset + length;
        int position = offset;
        position += header.decode(buffer, position, length);
        int tag;

        while (position < end)
        {
            final int equalsPosition = buffer.scan(position, end, '=');
            if (equalsPosition == AsciiBuffer.UNKNOWN_INDEX)
            {
               return position;
            }
            tag = buffer.getInt(position, equalsPosition);
            final int valueOffset = equalsPosition + 1;
            int endOfField = buffer.scan(valueOffset, end, START_OF_HEADER);
            if (endOfField == AsciiBuffer.UNKNOWN_INDEX)
            {
                rejectReason = 5;
                break;
            }
            final int valueLength = endOfField - valueOffset;
            if (CODEC_VALIDATION_ENABLED)
            {
                if (tag <= 0)
                {
                    invalidTagId = tag;
                    rejectReason = 0;
                }
                else if (valueLength == 0)
                {
                    invalidTagId = tag;
                    rejectReason = 4;
                }
                if (!alreadyVisitedFields.add(tag))
                {
                    invalidTagId = tag;
                    rejectReason = 13;
                }
                missingRequiredFields.remove(tag);
                seenFieldCount++;
            }

            switch (tag)
            {
            case Constants.GAP_FILL_FLAG:
                hasGapFillFlag = true;
                gapFillFlag = buffer.getBoolean(valueOffset);
                break;

            case Constants.NEW_SEQ_NO:
                newSeqNo = getInt(buffer, valueOffset, endOfField, 36, CODEC_VALIDATION_ENABLED);
                break;

            default:
                if (!CODEC_REJECT_UNKNOWN_FIELD_ENABLED)
                {
                    alreadyVisitedFields.remove(tag);
                }
                else
                {
                    if (!(trailer.REQUIRED_FIELDS.contains(tag)))
                    {
                        unknownFields.add(tag);
                    }
                }
                if (CODEC_REJECT_UNKNOWN_FIELD_ENABLED || (trailer.REQUIRED_FIELDS.contains(tag)))
                {
                    position += trailer.decode(buffer, position, end - position);
                    return position - offset;
                }

            }

            if (position < (endOfField + 1))
            {
                position = endOfField + 1;
            }
        }
        position += trailer.decode(buffer, position, end - position);
        return position - offset;
    }

    public void reset()
    {
        header.reset();
        trailer.reset();
        resetMessage();
        buffer = null;
        if (CODEC_VALIDATION_ENABLED)
        {
            invalidTagId = Decoder.NO_ERROR;
            rejectReason = Decoder.NO_ERROR;
            missingRequiredFields.clear();
            unknownFields.clear();
            alreadyVisitedFields.clear();
        }
    }

    public void resetMessage()
    {
        this.resetGapFillFlag();
        this.resetNewSeqNo();
    }

    public void resetGapFillFlag()
    {
        hasGapFillFlag = false;
    }

    public void resetNewSeqNo()
    {
        newSeqNo = MISSING_INT;
    }

    public String toString()
    {
        return appendTo(new StringBuilder()).toString();
    }

    public StringBuilder appendTo(final StringBuilder builder)
    {
        return appendTo(builder, 1);
    }

    public StringBuilder appendTo(final StringBuilder builder, final int level)
    {
        builder.append("{\n");        indent(builder, level);
        builder.append("\"MessageName\": \"SequenceReset\",\n");
        builder.append("  \"header\": ");
        header.appendTo(builder, level + 1);
        builder.append("\n");
        if (hasGapFillFlag())
        {
            indent(builder, level);
            builder.append("\"GapFillFlag\": \"");
            builder.append(gapFillFlag);
            builder.append("\",\n");
        }

        indent(builder, level);
        builder.append("\"NewSeqNo\": \"");
        builder.append(newSeqNo);
        builder.append("\",\n");
        indent(builder, level - 1);
        builder.append("}");
        return builder;
    }

    public SequenceResetEncoder toEncoder(final Encoder encoder)
    {
        return toEncoder((SequenceResetEncoder)encoder);
    }

    public SequenceResetEncoder toEncoder(final SequenceResetEncoder encoder)
    {
        encoder.reset();
        if (hasGapFillFlag())
        {
            encoder.gapFillFlag(this.gapFillFlag());
        }

        encoder.newSeqNo(this.newSeqNo());        return encoder;
    }

}




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