# ADR-0003 - Avoid introducing Groovy types to public API

## Date

2024-01-12

## Context

Gradle's public API requires equal access from all JVM-based languages.
Kotlin, Groovy, Java, and other JVM-based languages should be able to use the Gradle API without relying on another language's standard library.

Historically, Gradle has shipped with some Groovy types in very prominent APIs.

import java.io.IOException;

public class NbtException extends IOException {

    // error classes
    public static final int SUCCESS = 0;
    public static final int ERR_NAM_SRVC = 0x01;
    public static final int ERR_SSN_SRVC = 0x02;

    // name service error codes
    public static final int FMT_ERR = 0x1;
    public static final int SRV_ERR = 0x2;
    public static final int IMP_ERR = 0x4;

            }
            for( ; i < 15; i++ ) {
                dst[dstIndex + ( 2 * i + 1 )] = (byte)0x43;
                dst[dstIndex + ( 2 * i + 2 )] = (byte)0x41;
            }
            dst[dstIndex + TYPE_OFFSET] = (byte)((( hexCode & 0xF0 ) >> 4 ) + 0x41 );
            dst[dstIndex + TYPE_OFFSET + 1] = (byte)(( hexCode & 0x0F ) + 0x41 );

    // relative to headerStart
    static final int SETUP_OFFSET = 61;

    static final int DISCONNECT_TID = 0x01;
    static final int ONE_WAY_TRANSACTION = 0x02;

    private int pad;
    private int pad1;
    private boolean parametersDone, dataDone;

    protected int totalParameterCount;
    protected int totalDataCount;

     * and simply return 0. These would need to be completed for a server
     * implementation.
     */

    protected static final short SMB2_NEGOTIATE = 0x00;
    protected static final short SMB2_SESSION_SETUP = 0x01;
    protected static final short SMB2_LOGOFF = 0x02;
    protected static final short SMB2_TREE_CONNECT = 0x0003;
    protected static final short SMB2_TREE_DISCONNECT = 0x0004;

        (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, // NextCommand
        (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, // MessageId
        (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, // Reserved / AsyncId
        (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, // TreeId / AsyncId

    static final byte[] header = {
        (byte)0xFF, (byte)'S', (byte)'M', (byte)'B',
        (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x00,
        (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x00,
        (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x00,
        (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x00,
        (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x00
    };

    static void writeInt2( long val, byte[] dst, int dstIndex ) {

    byte result = 0x01;
    for (int i = 0; i < reps; i++) {
      HashCode checksum = new Fingerprint2011().hashBytes(testBytes, 0, testBytes.length);
      result = (byte) (result ^ checksum.asLong());
    }
    return result;
  }

  // Helpers + main

  private byte runHashFunction(int reps, HashFunction hashFunction) {
    byte result = 0x01;

        dstIndex += 2;
        dst[dstIndex++] = (byte)0x00;
        dst[dstIndex++] = (byte)0x00;
        dst[dstIndex++] = (byte)0x00;
        dst[dstIndex++] = (byte)0x00;
        dstIndex += writeString( path, dst, dstIndex );

        return dstIndex - start;
    }
    int writeDataWireFormat( byte[] dst, int dstIndex ) {
        return 0;
    }

        SMBUtil.writeInt2(mapInformationLevel(this.informationLevel), dst, dstIndex);
        dstIndex += 2;
        dst[ dstIndex++ ] = (byte) 0x00;
        dst[ dstIndex++ ] = (byte) 0x00;
        dst[ dstIndex++ ] = (byte) 0x00;
        dst[ dstIndex++ ] = (byte) 0x00;
        dstIndex += writeString(this.path, dst, dstIndex);

        return dstIndex - start;
    }


    /**
     * @param informationLevel2