source: addons/HeuristicLab.PushGP/HeuristicLab.Problems.ProgramSynthesis/Push/Expressions/InExpressions.cs

namespace HeuristicLab.Problems.ProgramSynthesis.Push.Expressions {
  using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
  using HeuristicLab.Problems.ProgramSynthesis.Push.Attributes;
  using HeuristicLab.Problems.ProgramSynthesis.Push.Interpreter;
  using HeuristicLab.Problems.ProgramSynthesis.Push.Stack;

  /// <summary>
  /// InExpression has a state, but this state is static at compile time and therefore InExpression can be seen as stateless at runtime
  /// </summary>
  [StorableClass]
  public abstract class InExpression : StatelessExpression {
    private readonly int index;

    protected InExpression(int nr) {
      index = nr - 1;
    }

    [StorableConstructor]
    protected InExpression(bool deserializing) : base(deserializing) { }

    public override bool IsNoop(IInternalPushInterpreter interpreter) {
      var expression = interpreter.InputExpressions[index];

      return expression.IsNoop(interpreter);
    }

    public override void Eval(IInternalPushInterpreter interpreter) {
      var expression = interpreter.InputExpressions[index];

      expression.Eval(interpreter);
    }
  }

  [PushExpression(
    StackTypes.None,
    "IN1",
    "Pushes first input parameter.",
    isHidden: true,
    inExpressionNr: 1)]
  [StorableClass]
  public class In1Expression : InExpression {
    public In1Expression() : base(1) { }

    [StorableConstructor]
    protected In1Expression(bool deserializing) : base(deserializing) { }
  }

  [PushExpression(
    StackTypes.None,
    "IN2",
    "Pushes second input parameter.",
    isHidden: true,
    inExpressionNr: 2)]
  [StorableClass]
  public class In2Expression : InExpression {
    public In2Expression() : base(2) { }

    [StorableConstructor]
    protected In2Expression(bool deserializing) : base(deserializing) { }
  }

  [PushExpression(
   StackTypes.None,
   "IN3",
   "Pushes third input parameter.",
    isHidden: true,
    inExpressionNr: 3)]
  [StorableClass]
  public class In3Expression : InExpression {
    public In3Expression() : base(3) { }

    [StorableConstructor]
    protected In3Expression(bool deserializing) : base(deserializing) { }
  }

  [PushExpression(
    StackTypes.None,
    "IN4",
    "Pushes fourth input parameter.",
    isHidden: true,
    inExpressionNr: 4)]
  [StorableClass]
  public class In4Expression : InExpression {
    public In4Expression() : base(4) { }

    [StorableConstructor]
    protected In4Expression(bool deserializing) : base(deserializing) { }
  }

  [PushExpression(
    StackTypes.None,
    "IN5",
    "Pushes fifth input parameter.",
    isHidden: true,
    inExpressionNr: 5)]
  [StorableClass]
  public class In5Expression : InExpression {
    public In5Expression() : base(5) { }

    [StorableConstructor]
    protected In5Expression(bool deserializing) : base(deserializing) { }
  }

  [PushExpression(
    StackTypes.None,
    "IN6",
    "Pushes sixth input parameter.",
    isHidden: true,
    inExpressionNr: 6)]
  [StorableClass]
  public class In6Expression : InExpression {
    public In6Expression() : base(6) { }

    [StorableConstructor]
    protected In6Expression(bool deserializing) : base(deserializing) { }
  }

  [PushExpression(
    StackTypes.None,
    "IN7",
    "Pushes seventh input parameter.",
    isHidden: true,
    inExpressionNr: 7)]
  [StorableClass]
  public class In7Expression : InExpression {
    public In7Expression() : base(7) { }

    [StorableConstructor]
    protected In7Expression(bool deserializing) : base(deserializing) { }
  }

  [PushExpression(
    StackTypes.None,
    "IN8",
    "Pushes eighth input parameter.",
    isHidden: true,
    inExpressionNr: 8)]
  [StorableClass]
  public class In8Expression : InExpression {
    public In8Expression() : base(8) { }

    [StorableConstructor]
    protected In8Expression(bool deserializing) : base(deserializing) { }
  }

  [PushExpression(
    StackTypes.None,
    "IN9",
    "Pushes nineth input parameter.",
    isHidden: true,
    inExpressionNr: 9)]
  [StorableClass]
  public class In9Expression : InExpression {
    public In9Expression() : base(9) { }

    [StorableConstructor]
    protected In9Expression(bool deserializing) : base(deserializing) { }
  }

  [PushExpression(
    StackTypes.None,
    "IN10",
    "Pushes tenth input parameter.",
    isHidden: true,
    inExpressionNr: 10)]
  [StorableClass]
  public class In10Expression : InExpression {
    public In10Expression() : base(10) { }

    [StorableConstructor]
    protected In10Expression(bool deserializing) : base(deserializing) { }
  }
}