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Fork of Esoteric Software's Kryo built by Nathan Sweet that replaces Minlog with slf4j as the logging facade. This contains the shaded reflectasm jar to prevent conflicts with other versions of asm.
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/* Copyright (c) 2008, Nathan Sweet
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following
 * conditions are met:
 * 
 * - Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following
 * disclaimer in the documentation and/or other materials provided with the distribution.
 * - Neither the name of Esoteric Software nor the names of its contributors may be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
 * SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */

package com.esotericsoftware.kryo.serializers;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.esotericsoftware.kryo.Kryo;
import com.esotericsoftware.kryo.KryoException;
import com.esotericsoftware.kryo.Registration;
import com.esotericsoftware.kryo.Serializer;
import com.esotericsoftware.kryo.io.Input;
import com.esotericsoftware.kryo.io.Output;
import com.esotericsoftware.kryo.serializers.FieldSerializer.CachedField;
import com.esotericsoftware.reflectasm.FieldAccess;

/*** Defer generation of serializers until it is really required at run-time. By default, use reflection-based approach. 
 * @author Nathan Sweet 
 * @author Roman Levenstein  */
class ObjectField extends CachedField {
	private static final Logger LOGGER = LoggerFactory.getLogger(ObjectField.class);
	
	public Class[] generics;
	final FieldSerializer fieldSerializer;
	final Class type;
	final Kryo kryo;

	ObjectField (FieldSerializer fieldSerializer) {
		this.fieldSerializer = fieldSerializer;
		this.kryo = fieldSerializer.kryo;
		this.type = fieldSerializer.type;
	}

	public Object getField (Object object) throws IllegalArgumentException, IllegalAccessException {
		return field.get(object);
	}

	public void setField (Object object, Object value) throws IllegalArgumentException, IllegalAccessException {
		field.set(object, value);
	}

	 public void write (Output output, Object object) {
		 final String methodName = "write : ";
		 
		try {
			// if(typeVar2concreteClass != null) {
			// // Push a new scope for generics
			// kryo.pushGenericsScope(type, new Generics(typeVar2concreteClass));
			// }

			LOGGER.trace("{} Write field: {} ({}) pos={}", methodName, this, object.getClass().getName(), output.position());

			Object value = getField(object);

			Serializer serializer = this.serializer;
			if (valueClass == null) {
				// The concrete type of the field is unknown, write the class first.
				if (value == null) {
					kryo.writeClass(output, null);
					return;
				}
				Registration registration = kryo.writeClass(output, value.getClass());
				if (serializer == null) serializer = registration.getSerializer();
				// if (generics != null)
				serializer.setGenerics(kryo, generics);
				kryo.writeObject(output, value, serializer);
			} else {
				// The concrete type of the field is known, always use the same serializer.
				if (serializer == null) this.serializer = serializer = kryo.getSerializer(valueClass);
				// if (generics != null)
				serializer.setGenerics(kryo, generics);
				if (canBeNull) {
					kryo.writeObjectOrNull(output, value, serializer);
				} else {
					if (value == null) {
						throw new KryoException("Field value is null but canBeNull is false: " + this + " (" + object.getClass().getName() + ")");
					}
					kryo.writeObject(output, value, serializer);
				}
			}
		} catch (IllegalAccessException ex) {
			throw new KryoException("Error accessing field: " + this + " (" + object.getClass().getName() + ")", ex);
		} catch (KryoException ex) {
			ex.addTrace(this + " (" + object.getClass().getName() + ")");
			throw ex;
		} catch (RuntimeException runtimeEx) {
			KryoException ex = new KryoException(runtimeEx);
			ex.addTrace(this + " (" + object.getClass().getName() + ")");
			throw ex;
		} finally {
			// if(typeVar2concreteClass != null)
			// kryo.popGenericsScope();
		}
	}

	public void read (Input input, Object object) {
		final String methodName = "read : ";
		
		try {
			LOGGER.trace("{} Read field: {} ({}) pos={}", methodName, this, type.getName(), input.position());
			Object value;

			Class concreteType = valueClass;
			Serializer serializer = this.serializer;
			if (concreteType == null) {
				Registration registration = kryo.readClass(input);
				if (registration == null)
					value = null;
				else {
					if (serializer == null) serializer = registration.getSerializer();
					// if (generics != null)
					serializer.setGenerics(kryo, generics);
					value = kryo.readObject(input, registration.getType(), serializer);
				}
			} else {
				if (serializer == null) this.serializer = serializer = kryo.getSerializer(valueClass);
				// if (generics != null)
				serializer.setGenerics(kryo, generics);
				if (canBeNull)
					value = kryo.readObjectOrNull(input, concreteType, serializer);
				else
					value = kryo.readObject(input, concreteType, serializer);
			}

			setField(object, value);
		} catch (IllegalAccessException ex) {
			throw new KryoException("Error accessing field: " + this + " (" + type.getName() + ")", ex);
		} catch (KryoException ex) {
			ex.addTrace(this + " (" + type.getName() + ")");
			throw ex;
		} catch (RuntimeException runtimeEx) {
			KryoException ex = new KryoException(runtimeEx);
			ex.addTrace(this + " (" + type.getName() + ")");
			throw ex;
		} finally {
			// if(typeVar2concreteClass != null)
			// kryo.popGenericsScope();
		}
	}

	public void copy (Object original, Object copy) {
		try {
			if (accessIndex != -1) {
				FieldAccess access = (FieldAccess)fieldSerializer.access;
				access.set(copy, accessIndex, kryo.copy(access.get(original, accessIndex)));
			} else
				setField(copy, kryo.copy(getField(original)));
		} catch (IllegalAccessException ex) {
			throw new KryoException("Error accessing field: " + this + " (" + type.getName() + ")", ex);
		} catch (KryoException ex) {
			ex.addTrace(this + " (" + type.getName() + ")");
			throw ex;
		} catch (RuntimeException runtimeEx) {
			KryoException ex = new KryoException(runtimeEx);
			ex.addTrace(this + " (" + type.getName() + ")");
			throw ex;
		}
	}

	final static class ObjectIntField extends ObjectField {
		public ObjectIntField (FieldSerializer fieldSerializer) {
			super(fieldSerializer);
		}

		public Object getField (Object object) throws IllegalArgumentException, IllegalAccessException {
			return field.getInt(object);
		}

		public void write (Output output, Object object) {
			try {
				if (varIntsEnabled)
					output.writeInt(field.getInt(object), false);
				else
					output.writeInt(field.getInt(object));
			} catch (Exception e) {
				KryoException ex = new KryoException(e);
				ex.addTrace(this + " (" + type.getName() + ")");
				throw ex;
			}
		}

		public void read (Input input, Object object) {
			try {
				if (varIntsEnabled)
					field.setInt(object, input.readInt(false));
				else
					field.setInt(object, input.readInt());
			} catch (Exception e) {
				KryoException ex = new KryoException(e);
				ex.addTrace(this + " (" + type.getName() + ")");
				throw ex;
			}
		}

		public void copy (Object original, Object copy) {
			try {
				field.setInt(copy, field.getInt(original));
			} catch (Exception e) {
				KryoException ex = new KryoException(e);
				ex.addTrace(this + " (" + type.getName() + ")");
				throw ex;
			}
		}
	}

	final static class ObjectFloatField extends ObjectField {
		public ObjectFloatField (FieldSerializer fieldSerializer) {
			super(fieldSerializer);
		}

		public Object getField (Object object) throws IllegalArgumentException, IllegalAccessException {
			return field.getFloat(object);
		}

		public void write (Output output, Object object) {
			try {
				output.writeFloat(field.getFloat(object));
			} catch (Exception e) {
				KryoException ex = new KryoException(e);
				ex.addTrace(this + " (" + type.getName() + ")");
				throw ex;
			}
		}

		public void read (Input input, Object object) {
			try {
				field.setFloat(object, input.readFloat());
			} catch (Exception e) {
				KryoException ex = new KryoException(e);
				ex.addTrace(this + " (" + type.getName() + ")");
				throw ex;
			}
		}

		public void copy (Object original, Object copy) {
			try {
				field.setFloat(copy, field.getFloat(original));
			} catch (Exception e) {
				KryoException ex = new KryoException(e);
				ex.addTrace(this + " (" + type.getName() + ")");
				throw ex;
			}
		}
	}

	final static class ObjectShortField extends ObjectField {
		public ObjectShortField (FieldSerializer fieldSerializer) {
			super(fieldSerializer);
		}

		public Object getField (Object object) throws IllegalArgumentException, IllegalAccessException {
			return field.getShort(object);
		}

		public void write (Output output, Object object) {
			try {
				output.writeShort(field.getShort(object));
			} catch (Exception e) {
				KryoException ex = new KryoException(e);
				ex.addTrace(this + " (" + type.getName() + ")");
				throw ex;
			}
		}

		public void read (Input input, Object object) {
			try {
				field.setShort(object, input.readShort());
			} catch (Exception e) {
				KryoException ex = new KryoException(e);
				ex.addTrace(this + " (" + type.getName() + ")");
				throw ex;
			}
		}

		public void copy (Object original, Object copy) {
			try {
				field.setShort(copy, field.getShort(original));
			} catch (Exception e) {
				KryoException ex = new KryoException(e);
				ex.addTrace(this + " (" + type.getName() + ")");
				throw ex;
			}
		}
	}

	final static class ObjectByteField extends ObjectField {
		public ObjectByteField (FieldSerializer fieldSerializer) {
			super(fieldSerializer);
		}

		public Object getField (Object object) throws IllegalArgumentException, IllegalAccessException {
			return field.getByte(object);
		}

		public void write (Output output, Object object) {
			try {
				output.writeByte(field.getByte(object));
			} catch (Exception e) {
				KryoException ex = new KryoException(e);
				ex.addTrace(this + " (" + type.getName() + ")");
				throw ex;
			}
		}

		public void read (Input input, Object object) {
			try {
				field.setByte(object, input.readByte());
			} catch (Exception e) {
				KryoException ex = new KryoException(e);
				ex.addTrace(this + " (" + type.getName() + ")");
				throw ex;
			}
		}

		public void copy (Object original, Object copy) {
			try {
				field.setByte(copy, field.getByte(original));
			} catch (Exception e) {
				KryoException ex = new KryoException(e);
				ex.addTrace(this + " (" + type.getName() + ")");
				throw ex;
			}
		}
	}

	final static class ObjectBooleanField extends ObjectField {
		public ObjectBooleanField (FieldSerializer fieldSerializer) {
			super(fieldSerializer);
		}

		public Object getField (Object object) throws IllegalArgumentException, IllegalAccessException {
			return field.getBoolean(object);
		}

		public void write (Output output, Object object) {
			try {
				output.writeBoolean(field.getBoolean(object));
			} catch (Exception e) {
				KryoException ex = new KryoException(e);
				ex.addTrace(this + " (" + type.getName() + ")");
				throw ex;
			}
		}

		public void read (Input input, Object object) {
			try {
				field.setBoolean(object, input.readBoolean());
			} catch (Exception e) {
				KryoException ex = new KryoException(e);
				ex.addTrace(this + " (" + type.getName() + ")");
				throw ex;
			}
		}

		public void copy (Object original, Object copy) {
			try {
				field.setBoolean(copy, field.getBoolean(original));
			} catch (Exception e) {
				KryoException ex = new KryoException(e);
				ex.addTrace(this + " (" + type.getName() + ")");
				throw ex;
			}
		}
	}

	final static class ObjectCharField extends ObjectField {
		public ObjectCharField (FieldSerializer fieldSerializer) {
			super(fieldSerializer);
		}

		public Object getField (Object object) throws IllegalArgumentException, IllegalAccessException {
			return field.getChar(object);
		}

		public void write (Output output, Object object) {
			try {
				output.writeChar(field.getChar(object));
			} catch (Exception e) {
				KryoException ex = new KryoException(e);
				ex.addTrace(this + " (" + type.getName() + ")");
				throw ex;
			}
		}

		public void read (Input input, Object object) {
			try {
				field.setChar(object, input.readChar());
			} catch (Exception e) {
				KryoException ex = new KryoException(e);
				ex.addTrace(this + " (" + type.getName() + ")");
				throw ex;
			}
		}

		public void copy (Object original, Object copy) {
			try {
				field.setChar(copy, field.getChar(original));
			} catch (Exception e) {
				KryoException ex = new KryoException(e);
				ex.addTrace(this + " (" + type.getName() + ")");
				throw ex;
			}
		}
	}

	final static class ObjectLongField extends ObjectField {
		public ObjectLongField (FieldSerializer fieldSerializer) {
			super(fieldSerializer);
		}

		public Object getField (Object object) throws IllegalArgumentException, IllegalAccessException {
			return field.getLong(object);
		}

		public void write (Output output, Object object) {
			try {
				if (varIntsEnabled)
					output.writeLong(field.getLong(object), false);
				else
					output.writeLong(field.getLong(object));
			} catch (Exception e) {
				KryoException ex = new KryoException(e);
				ex.addTrace(this + " (" + type.getName() + ")");
				throw ex;
			}
		}

		public void read (Input input, Object object) {
			try {
				if (varIntsEnabled)
					field.setLong(object, input.readLong(false));
				else
					field.setLong(object, input.readLong());
			} catch (Exception e) {
				KryoException ex = new KryoException(e);
				ex.addTrace(this + " (" + type.getName() + ")");
				throw ex;
			}
		}

		public void copy (Object original, Object copy) {
			try {
				field.setLong(copy, field.getLong(original));
			} catch (Exception e) {
				KryoException ex = new KryoException(e);
				ex.addTrace(this + " (" + type.getName() + ")");
				throw ex;
			}
		}
	}

	final static class ObjectDoubleField extends ObjectField {
		public ObjectDoubleField (FieldSerializer fieldSerializer) {
			super(fieldSerializer);
		}

		public Object getField (Object object) throws IllegalArgumentException, IllegalAccessException {
			return field.getDouble(object);
		}

		public void write (Output output, Object object) {
			try {
				output.writeDouble(field.getDouble(object));
			} catch (Exception e) {
				KryoException ex = new KryoException(e);
				ex.addTrace(this + " (" + type.getName() + ")");
				throw ex;
			}
		}

		public void read (Input input, Object object) {
			try {
				field.setDouble(object, input.readDouble());
			} catch (Exception e) {
				KryoException ex = new KryoException(e);
				ex.addTrace(this + " (" + type.getName() + ")");
				throw ex;
			}
		}

		public void copy (Object original, Object copy) {
			try {
				field.setDouble(copy, field.getDouble(original));
			} catch (Exception e) {
				KryoException ex = new KryoException(e);
				ex.addTrace(this + " (" + type.getName() + ")");
				throw ex;
			}
		}
	}
}