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package jcgp.backend.function;

import jcgp.backend.population.Connection;

public class BitwiseLogic extends FunctionSet {
	
	public BitwiseLogic() {
		name = "32-bit Logic";
		functionList = new Function[]{
				new ConstantZero(),
				new ConstantOne(),
				new WireA(),
				new WireB(),
				new NotA(),
				new NotB(),
				new And(),
				new AndNotA(),
				new AndNotB(),
				new Nor(),
				new Xor(),
				new Xnor(),
				new Or(),
				new OrNotA(),
				new OrNotB(),
				new Nand()};
		
		// TODO muxes
		
		enableAll();
	}
	
	public static class ConstantZero extends Function {
		@Override
		public Long run(Connection... connections) {
			return new Long(0);
		}

		@Override
		public int getArity() {
			return 0;
		}

		@Override
		public String getName() {
			return "0";
		}
	}
	
	public static class ConstantOne extends Function {
		@Override
		public Long run(Connection... connections) {
			return new Long(Long.MAX_VALUE);
		}

		@Override
		public int getArity() {
			return 0;
		}

		@Override
		public String getName() {
			return "1";
		}
	}
	
	public static class WireA extends Function {
		@Override
		public Long run(Connection... connections) {
			if (connections.length < getArity()) {
				throw new IllegalArgumentException(getName() + " received " + connections.length + " connections but arity is " + getArity() + ".");
			} else {
				return ((Long) connections[0].getValue()).longValue();
			}
		}

		@Override
		public int getArity() {
			return 2;
		}

		@Override
		public String getName() {
			return "Wire A";
		}
	}
	
	public static class WireB extends Function {
		@Override
		public Long run(Connection... connections) {
			if (connections.length < getArity()) {
				throw new IllegalArgumentException(getName() + " received " + connections.length + " connections but arity is " + getArity() + ".");
			} else {
				return ((Long) connections[1].getValue()).longValue();
			}
		}

		@Override
		public int getArity() {
			return 2;
		}

		@Override
		public String getName() {
			return "Wire B";
		}
	}
	
	public static class NotA extends Function {
		@Override
		public Long run(Connection... connections) {
			if (connections.length < getArity()) {
				throw new IllegalArgumentException(getName() + " received " + connections.length + " connections but arity is " + getArity() + ".");
			} else {
				return ~((Long) connections[0].getValue()).longValue();
			}
		}

		@Override
		public int getArity() {
			return 2;
		}

		@Override
		public String getName() {
			return "Not A";
		}
	}
	
	public static class NotB extends Function {
		@Override
		public Long run(Connection... connections) {
			if (connections.length < getArity()) {
				throw new IllegalArgumentException(getName() + " received " + connections.length + " connections but arity is " + getArity() + ".");
			} else {
				return ~((Long) connections[1].getValue()).longValue();
			}
		}

		@Override
		public int getArity() {
			return 2;
		}

		@Override
		public String getName() {
			return "Not B";
		}
	}
	
	public static class And extends Function {
		@Override
		public Long run(Connection... connections) {
			if (connections.length < getArity()) {
				throw new IllegalArgumentException(getName() + " received " + connections.length + " connections but arity is " + getArity() + ".");
			} else {
				Long arg1 = ((Long) connections[0].getValue());
				Long arg2 = ((Long) connections[1].getValue());
				Long result = arg1 & arg2;
				
				return result;
			}
		}

		@Override
		public int getArity() {
			return 2;
		}

		@Override
		public String getName() {
			return "And";
		}
	}
	
	public static class AndNotA extends Function {
		@Override
		public Long run(Connection... connections) {
			if (connections.length < getArity()) {
				throw new IllegalArgumentException(getName() + " received " + connections.length + " connections but arity is " + getArity() + ".");
			} else {
				Long arg1 = ((Long) connections[0].getValue());
				Long arg2 = ((Long) connections[1].getValue());
				Long result = ~arg1 & arg2;
				
				return result;
			}
		}

		@Override
		public int getArity() {
			return 2;
		}

		@Override
		public String getName() {
			return "And !A";
		}
	}
	
	public static class AndNotB extends Function {
		@Override
		public Long run(Connection... connections) {
			if (connections.length < getArity()) {
				throw new IllegalArgumentException(getName() + " received " + connections.length + " connections but arity is " + getArity() + ".");
			} else {
				Long arg1 = ((Long) connections[0].getValue());
				Long arg2 = ((Long) connections[1].getValue());
				Long result = arg1 & ~arg2;
				
				return result;
			}
		}

		@Override
		public int getArity() {
			return 2;
		}

		@Override
		public String getName() {
			return "And !B";
		}
	}
	
	public static class Nor extends Function {
		@Override
		public Long run(Connection... connections) {
			if (connections.length < getArity()) {
				throw new IllegalArgumentException(getName() + " received " + connections.length + " connections but arity is " + getArity() + ".");
			} else {
				Long arg1 = ((Long) connections[0].getValue());
				Long arg2 = ((Long) connections[1].getValue());
				Long result = arg1 | arg2;

				return ~result;
			}
		}

		@Override
		public int getArity() {
			return 2;
		}

		@Override
		public String getName() {
			return "Nor";
		}
	}
	
	public static class Xor extends Function {
		@Override
		public Long run(Connection... connections) {
			if (connections.length < getArity()) {
				throw new IllegalArgumentException(getName() + " received " + connections.length + " connections but arity is " + getArity() + ".");
			} else {
				Long arg1 = ((Long) connections[0].getValue());
				Long arg2 = ((Long) connections[1].getValue());
				Long result = arg1 ^ arg2;

				return result;
			}
		}

		@Override
		public int getArity() {
			return 2;
		}

		@Override
		public String getName() {
			return "Xor";
		}
	}
	
	public static class Xnor extends Function {
		@Override
		public Long run(Connection... connections) {
			if (connections.length < getArity()) {
				throw new IllegalArgumentException(getName() + " received " + connections.length + " connections but arity is " + getArity() + ".");
			} else {
				Long arg1 = ((Long) connections[0].getValue());
				Long arg2 = ((Long) connections[1].getValue());
				Long result = arg1 ^ arg2;

				return ~result;
			}
		}

		@Override
		public int getArity() {
			return 2;
		}

		@Override
		public String getName() {
			return "Xnor";
		}
	}
	
	public static class Or extends Function {
		@Override
		public Long run(Connection... connections) {
			if (connections.length < getArity()) {
				throw new IllegalArgumentException(getName() + " received " + connections.length + " connections but arity is " + getArity() + ".");
			} else {
				Long arg1 = ((Long) connections[0].getValue());
				Long arg2 = ((Long) connections[1].getValue());
				Long result = arg1 | arg2;

				return result;
			}
		}

		@Override
		public int getArity() {
			return 2;
		}

		@Override
		public String getName() {
			return "Or";
		}
	}
	
	public static class OrNotA extends Function {
		@Override
		public Long run(Connection... connections) {
			if (connections.length < getArity()) {
				throw new IllegalArgumentException(getName() + " received " + connections.length + " connections but arity is " + getArity() + ".");
			} else {
				Long arg1 = ((Long) connections[0].getValue());
				Long arg2 = ((Long) connections[1].getValue());
				Long result = ~arg1 | arg2;

				return result;
			}
		}

		@Override
		public int getArity() {
			return 2;
		}

		@Override
		public String getName() {
			return "Or !A";
		}
	}
	
	public static class OrNotB extends Function {
		@Override
		public Long run(Connection... connections) {
			if (connections.length < getArity()) {
				throw new IllegalArgumentException(getName() + " received " + connections.length + " connections but arity is " + getArity() + ".");
			} else {
				Long arg1 = ((Long) connections[0].getValue());
				Long arg2 = ((Long) connections[1].getValue());
				Long result = arg1 | ~arg2;

				return result;
			}
		}

		@Override
		public int getArity() {
			return 2;
		}

		@Override
		public String getName() {
			return "Or !B";
		}
	}

	public static class Nand extends Function {
		@Override
		public Long run(Connection... connections) {
			if (connections.length < getArity()) {
				throw new IllegalArgumentException(getName() + " received " + connections.length + " connections but arity is " + getArity() + ".");
			} else {
				Long arg1 = ((Long) connections[0].getValue());
				Long arg2 = ((Long) connections[1].getValue());
				Long result = arg1 & arg2;

				return ~result;
			}
		}

		@Override
		public int getArity() {
			return 2;
		}

		@Override
		public String getName() {
			return "Nand";
		}
	}
}