Signum Documentation

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Expression Visitor that takes the nominated subtrees of the ExpressionNominator, compiles and evaluates them and then replaces each subtree by the corresponding value.

ExpressionEvaluator.Eval also is able to evaluate a complete expression tree and return the value (or throw an exception if it's not possible to do so).

public class ExpressionEvaluator : ExpressionVisitor
   public static Expression PartialEval(Expression exp);

   public static object Eval(Expression expression);

In order to avoid compilation of too many sub-expressions, the ExpressionEvaluator catches the compilations for common sub-expressions:

  • Instance Mebers
  • Static Members
  • Instance methods with no arguments.
  • Static methods with no arguments.
  • Extension methods with no arguments.