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source: branches/PushGP/HeuristicLab.PushGP/HeuristicLab.Problems.ProgramSynthesis/Push/Expressions/VectorReverseExpressions.cs @ 14834

Last change on this file since 14834 was 14834, checked in by pkimmesw, 7 years ago

#2665 LexicaseSelector, Performance improvements, UI Fixes, Debugger only shows used stacks, fixed Debugger stepping, Added vector expressions, ERCOptions,

File size: 1.8 KB
Line 
1using System.Collections.Generic;
2
3namespace HeuristicLab.Problems.ProgramSynthesis.Push.Expressions {
4  using HeuristicLab.Problems.ProgramSynthesis.Push.Attributes;
5  using HeuristicLab.Problems.ProgramSynthesis.Push.Interpreter;
6  using HeuristicLab.Problems.ProgramSynthesis.Push.Stack;
7
8  /// <summary>
9  /// Takes the reverse of the top item on the type stack.
10  /// </summary>
11  /// <param name="vectorStack"></param>
12  /// <returns></returns>
13  public abstract class VectorReverseExpression<T> : StatelessExpression {
14    protected bool Eval(IPushStack<List<T>> vectorStack) {
15      if (vectorStack.IsEmpty)
16        return false;
17
18      vectorStack.Top.Reverse();
19      return true;
20    }
21  }
22
23  [PushExpression(StackTypes.IntegerVector, "INTEGER[].REVERSE")]
24  public class IntegerVectorReverseExpression : VectorReverseExpression<long> {
25    public override bool Eval(IInternalPushInterpreter interpreter) {
26      return Eval(interpreter.IntegerVectorStack);
27    }
28  }
29
30  [PushExpression(StackTypes.FloatVector, "FLOAT[].REVERSE")]
31  public class FloatVectorReverseExpression : VectorReverseExpression<double> {
32    public override bool Eval(IInternalPushInterpreter interpreter) {
33      return Eval(interpreter.FloatVectorStack);
34    }
35  }
36
37  [PushExpression(StackTypes.BooleanVector, "BOOLEAN[].REVERSE")]
38  public class BooleanVectorReverseExpression : VectorReverseExpression<bool> {
39    public override bool Eval(IInternalPushInterpreter interpreter) {
40      return Eval(interpreter.BooleanVectorStack);
41    }
42  }
43
44  [PushExpression(StackTypes.StringVector, "STRING[].REVERSE")]
45  public class StringVectorReverseExpression : VectorReverseExpression<string> {
46    public override bool Eval(IInternalPushInterpreter interpreter) {
47      return Eval(interpreter.StringVectorStack);
48    }
49  }
50}
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