1 | namespace HeuristicLab.Problems.ProgramSynthesis.Push.Expressions {
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2 | using HeuristicLab.Problems.ProgramSynthesis.Push.Attributes;
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3 | using HeuristicLab.Problems.ProgramSynthesis.Push.Generators;
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4 | using HeuristicLab.Problems.ProgramSynthesis.Push.Generators.CodeGenerator;
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5 | using HeuristicLab.Problems.ProgramSynthesis.Push.Interpreter;
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6 | using HeuristicLab.Problems.ProgramSynthesis.Push.Stack;
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7 | using HeuristicLab.Random;
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8 |
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9 | /// <summary>
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10 | /// Pushes a random NAME.
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11 | /// </summary>
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12 | [PushExpression(StackTypes.Name, "NAME.RAND")]
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13 | public class NameRandExpression : StatelessExpression {
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14 | public override bool Eval(IInternalPushInterpreter interpreter) {
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15 | if (!interpreter.Configuration.ErcOptions.NameErcOptions.IsEnabled)
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16 | return false;
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17 |
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18 | var name = interpreter.CustomExpressions.Count == 0 || interpreter.Random.NextDouble() < interpreter.Configuration.ErcOptions.NameErcOptions.NewNameProbability
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19 | ? ErcUtils.GetName(interpreter.Configuration.ErcOptions.NameErcOptions, interpreter.Random)
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20 | : interpreter.CustomExpressions.Keys.SampleRandom(interpreter.Random);
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21 |
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22 | interpreter.NameStack.Push(name);
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23 | return true;
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24 | }
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25 | }
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26 |
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27 | /// <summary>
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28 | /// Pushes a random integer.
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29 | /// </summary>
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30 | [PushExpression(StackTypes.Integer, "INTEGER.RAND")]
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31 | public class IntegerRandExpression : StatelessExpression {
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32 | public override bool Eval(IInternalPushInterpreter interpreter) {
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33 | if (!interpreter.Configuration.ErcOptions.IntegerErcOptions.IsEnabled)
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34 | return false;
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35 |
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36 | var value = ErcUtils.GetInteger(interpreter.Configuration.ErcOptions.IntegerErcOptions, interpreter.Random);
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37 | interpreter.IntegerStack.Push(value);
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38 | return true;
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39 | }
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40 | }
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41 |
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42 | /// <summary>
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43 | /// Pushes a random float.
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44 | /// </summary>
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45 | [PushExpression(StackTypes.Float, "FLOAT.RAND")]
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46 | public class FloatRandExpression : StatelessExpression {
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47 | public override bool Eval(IInternalPushInterpreter interpreter) {
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48 | if (!interpreter.Configuration.ErcOptions.FloatErcOptions.IsEnabled)
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49 | return false;
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50 |
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51 | var value = ErcUtils.GetDouble(interpreter.Configuration.ErcOptions.FloatErcOptions, interpreter.Random);
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52 | interpreter.FloatStack.Push(value);
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53 | return true;
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54 | }
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55 | }
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56 |
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57 | /// <summary>
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58 | /// Pushes a random boolean.
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59 | /// </summary>
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60 | [PushExpression(StackTypes.Boolean, "BOOLEAN.RAND")]
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61 | public class BooleanRandExpression : StatelessExpression {
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62 | public override bool Eval(IInternalPushInterpreter interpreter) {
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63 | if (!interpreter.Configuration.ErcOptions.BooleanErcOptions.IsEnabled)
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64 | return false;
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65 |
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66 | var value = ErcUtils.GetBoolean(interpreter.Configuration.ErcOptions.BooleanErcOptions, interpreter.Random);
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67 | interpreter.BooleanStack.Push(value);
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68 | return true;
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69 | }
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70 | }
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71 |
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72 | /// <summary>
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73 | /// Pushes random expressions onto the code stack.
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74 | /// </summary>
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75 | [PushExpression(StackTypes.Code, "CODE.RAND")]
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76 | public class CodeRandExpression : StatelessExpression {
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77 | public override bool Eval(IInternalPushInterpreter interpreter) {
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78 | if (interpreter.IntegerStack.Count == 0 ||
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79 | interpreter.IntegerStack.Top < 1) return false;
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80 |
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81 | var size = (int)(interpreter.IntegerStack.Pop() % interpreter.Configuration.MaxPointsInRandomExpression);
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82 | var program = LinearCodeGenerator.RandomProgram(
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83 | interpreter.PoolContainer.PushProgramPool,
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84 | interpreter.PoolContainer.ExpressionListPool,
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85 | size,
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86 | interpreter.Random,
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87 | interpreter.Configuration,
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88 | interpreter.CustomExpressions);
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89 |
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90 | interpreter.CodeStack.Push(program);
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91 | return true;
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92 | }
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93 | }
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94 | } |
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