1 | using System;
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2 | using System.Collections.Generic;
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3 | using HeuristicLab.Algorithms.PushGP.Expressions;
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4 |
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5 | using LinqExpression = System.Linq.Expressions.Expression;
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6 |
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7 | namespace HeuristicLab.Algorithms.PushGP
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8 | {
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9 | public static class ExpressionCreatorTable
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10 | {
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11 | private static Dictionary<OpCode, Func<Expression>> symbolTable = new Dictionary<OpCode, Func<Expression>>
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12 | {
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13 | #region Exec
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14 | { OpCode.ExecPop, GetExpressionCreator(typeof(ExecPopExpression)) },
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15 | { OpCode.ExecDup, GetExpressionCreator(typeof(ExecDuplicateExpression)) },
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16 | { OpCode.ExecDefine, GetExpressionCreator(typeof(ExecDefineExpression)) },
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17 | { OpCode.ExecDoXRange, GetExpressionCreator(typeof(ExecDoRangeExpression)) },
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18 | { OpCode.ExecY, GetExpressionCreator(typeof(ExecYExpression)) },
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19 | { OpCode.ExecIf, GetExpressionCreator(typeof(ExecIfExpression)) },
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20 | #endregion
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21 |
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22 | #region Code
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23 | { OpCode.CodeDup, GetExpressionCreator(typeof(CodeDuplicateExpression)) },
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24 | { OpCode.CodeDefine, GetExpressionCreator(typeof(CodeDefineExpression)) },
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25 | { OpCode.CodeQuote, GetExpressionCreator(typeof(CodeQuoteExpression)) },
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26 | { OpCode.CodeDo, GetExpressionCreator(typeof(CodeDoExpression)) },
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27 | { OpCode.CodeIf, GetExpressionCreator(typeof(CodeIfExpression)) },
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28 | #endregion Code
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29 |
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30 | #region Name
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31 | { OpCode.NamePop, GetExpressionCreator(typeof(NamePopExpression)) },
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32 | { OpCode.NameDup, GetExpressionCreator(typeof(NameDuplicateExpression)) },
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33 | #endregion Name
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34 |
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35 | #region Boolean
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36 | { OpCode.BooleanPop, GetExpressionCreator(typeof(BooleanPopExpression)) },
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37 | { OpCode.BooleanDup, GetExpressionCreator(typeof(BooleanDuplicateExpression)) },
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38 | { OpCode.BooleanDefine, GetExpressionCreator(typeof(BooleanDefineExpression)) },
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39 | { OpCode.BooleanOr, GetExpressionCreator(typeof(BooleanOrExpression)) },
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40 | { OpCode.BooleanAnd, GetExpressionCreator(typeof(BooleanAndExpression)) },
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41 | #endregion Boolean
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42 |
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43 | #region Integer
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44 | { OpCode.IntegerPop, GetExpressionCreator(typeof(IntegerPopExpression)) },
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45 | { OpCode.IntegerDup, GetExpressionCreator(typeof(IntegerDuplicateExpression)) },
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46 | { OpCode.IntegerDefine, GetExpressionCreator(typeof(IntegerDefineExpression)) },
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47 | { OpCode.IntegerMultiply, GetExpressionCreator(typeof(IntegerMultiplyExpression)) },
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48 | { OpCode.IntegerDivide, GetExpressionCreator(typeof(IntegerDivideExpression)) },
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49 | { OpCode.IntegerAdd, GetExpressionCreator(typeof(IntegerAddExpression)) },
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50 | { OpCode.IntegerSubtract, GetExpressionCreator(typeof(IntegerSubtractExpression)) },
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51 | { OpCode.IntegerMin, GetExpressionCreator(typeof(IntegerMinExpression)) },
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52 | { OpCode.IntegerMax, GetExpressionCreator(typeof(IntegerMaxExpression)) },
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53 | { OpCode.IntegerSmallerThan, GetExpressionCreator(typeof(IntegerSmallerThanExpression)) },
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54 | { OpCode.IntegerGreaterThan, GetExpressionCreator(typeof(IntegerGreaterThanExpression)) },
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55 | { OpCode.IntegerEquals, GetExpressionCreator(typeof(IntegerEqualsExpression)) },
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56 | #endregion Integer
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57 |
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58 | #region Float
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59 | { OpCode.FloatPop, GetExpressionCreator(typeof(FloatPopExpression)) },
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60 | { OpCode.FloatDup, GetExpressionCreator(typeof(FloatDuplicateExpression)) },
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61 | { OpCode.FloatDefine, GetExpressionCreator(typeof(FloatDefineExpression)) },
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62 | { OpCode.FloatAdd, GetExpressionCreator(typeof(FloatAddExpression)) },
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63 | { OpCode.FloatMultiply, GetExpressionCreator(typeof(FloatMultiplyExpression)) },
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64 | { OpCode.FloatDivide, GetExpressionCreator(typeof(FloatDivideExpression)) },
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65 | { OpCode.FloatSubtract, GetExpressionCreator(typeof(FloatSubtractExpression)) },
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66 | { OpCode.FloatMin, GetExpressionCreator(typeof(FloatMinExpression)) },
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67 | { OpCode.FloatMax, GetExpressionCreator(typeof(FloatMaxExpression)) },
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68 | { OpCode.FloatSmallerThan, GetExpressionCreator(typeof(FloatSmallerThanExpression)) },
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69 | { OpCode.FloatGreaterThan, GetExpressionCreator(typeof(FloatGreaterThanExpression)) },
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70 | { OpCode.FloatEquals, GetExpressionCreator(typeof(FloatEqualsExpression)) },
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71 | #endregion Float
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72 | };
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73 |
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74 | private static Func<Expression> GetExpressionCreator(Type type)
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75 | {
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76 | return LinqExpression.Lambda<Func<Expression>>(
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77 | LinqExpression.New(type.GetConstructor(Type.EmptyTypes))
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78 | ).Compile();
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79 | }
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80 |
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81 | public static Func<Expression> GetCreator(OpCode opCode)
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82 | {
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83 | Func<Expression> creator;
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84 | if (symbolTable.TryGetValue(opCode, out creator)) return creator;
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85 | else throw new NotSupportedException("OpCode: " + opCode);
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86 | }
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87 |
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88 | public static bool TryGetCreator(OpCode opCode, out Func<Expression> creator)
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89 | {
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90 | return symbolTable.TryGetValue(opCode, out creator);
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91 | }
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92 | }
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93 | }
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