Changeset 5749

Timestamp:

03/18/11 10:44:18 (14 years ago)

Author:

gkronber

Message:

#1418 Minor changes in SymbolicDataAnalysisExpressionTreeInterpreter to prepare for integration of interval arithmetic.

File:

• branches/DataAnalysis Refactoring/HeuristicLab.Problems.DataAnalysis.Symbolic/3.4/SymbolicDataAnalysisExpressionTreeInterpreter.cs (modified) (6 diffs)

branches/DataAnalysis Refactoring/HeuristicLab.Problems.DataAnalysis.Symbolic/3.4/SymbolicDataAnalysisExpressionTreeInterpreter.cs

@@ -26 +26 @@
 using HeuristicLab.Encodings.SymbolicExpressionTreeEncoding;
 using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
+using HeuristicLab.Data;
+using HeuristicLab.Parameters;
 
 namespace HeuristicLab.Problems.DataAnalysis.Symbolic {
   [StorableClass]
   [Item("SymbolicDataAnalysisExpressionTreeInterpreter", "Interpreter for symbolic expression trees including automatically defined functions.")]
-  public sealed class SymbolicDataAnalysisExpressionTreeInterpreter : NamedItem, ISymbolicDataAnalysisExpressionTreeInterpreter {
+  public sealed class SymbolicDataAnalysisExpressionTreeInterpreter : ParameterizedNamedItem, ISymbolicDataAnalysisExpressionTreeInterpreter {
+    private const string CheckExpressionsWithIntervalArithmeticParameterName = "CheckExpressionsWithIntervalArithmetic";
+    #region private classes
     private class InterpreterState {
       private const int ARGUMENT_STACK_SIZE = 1024;
@@ -88 +92 @@
       }
     }
-
     private class OpCodes {
       public const byte Add = 1;
@@ -129 +132 @@
       public const byte VariableCondition = 27;
     }
+    #endregion
 
     private Dictionary<Type, byte> symbolToOpcode = new Dictionary<Type, byte>() {
@@ -160 +164 @@
     };
 
-
     public override bool CanChangeName {
       get { return false; }
@@ -167 +170 @@
       get { return false; }
     }
+
+    #region parameter properties
+    public IValueParameter<BoolValue> CheckExpressionsWithIntervalArithmeticParameter {
+      get { return (IValueParameter<BoolValue>)Parameters[CheckExpressionsWithIntervalArithmeticParameterName]; }
+    }
+    #endregion
+
+    #region properties
+    public BoolValue CheckExpressionsWithIntervalArithmetic {
+      get { return CheckExpressionsWithIntervalArithmeticParameter.Value; }
+      set { CheckExpressionsWithIntervalArithmeticParameter.Value = value; }
+    }
+    #endregion
+
 
     [StorableConstructor]
@@ -176 +193 @@
 
     public SymbolicDataAnalysisExpressionTreeInterpreter()
-      : base() {
+      : base("SymbolicDataAnalysisExpressionTreeInterpreter", "Interpreter for symbolic expression trees including automatically defined functions.") {
+      Parameters.Add(new ValueParameter<BoolValue>(CheckExpressionsWithIntervalArithmeticParameterName, "Switch that determines if the interpreter checks the validity of expressions with interval arithmetic before evaluating the expression.", new BoolValue(false)));
     }
 
     public IEnumerable<double> GetSymbolicExpressionTreeValues(ISymbolicExpressionTree tree, Dataset dataset, IEnumerable<int> rows) {
+      if (CheckExpressionsWithIntervalArithmetic.Value)
+        throw new NotSupportedException("Interval arithmetic is not yet supported in the symbolic data analysis interpreter.");
       var compiler = new SymbolicExpressionTreeCompiler();
       Instruction[] code = compiler.Compile(tree, MapSymbolToOpCode);