Deveel.Data.Linq.Evaluator.SubtreeEvaluator Class Reference

Evaluates & replaces sub-trees when first candidate is reached (top-down) More...

Inheritance diagram for Deveel.Data.Linq.Evaluator.SubtreeEvaluator:

Public Member Functions
override Expression	Visit (Expression exp)

Package Functions
	SubtreeEvaluator (HashSet< Expression > candidates)
Expression	Eval (Expression exp)

Private Member Functions
Expression	Evaluate (Expression e)

Private Attributes
HashSet< Expression >	candidates

Additional Inherited Members
Protected Member Functions inherited from Deveel.Data.Linq.ExpressionVisitor
	ExpressionVisitor ()
virtual MemberBinding	VisitBinding (MemberBinding binding)
virtual ElementInit	VisitElementInitializer (ElementInit initializer)
virtual Expression	VisitUnary (UnaryExpression u)
virtual Expression	VisitBinary (BinaryExpression b)
virtual Expression	VisitTypeIs (TypeBinaryExpression b)
virtual Expression	VisitConstant (ConstantExpression c)
virtual Expression	VisitConditional (ConditionalExpression c)
virtual Expression	VisitParameter (ParameterExpression p)
virtual Expression	VisitMemberAccess (MemberExpression m)
virtual Expression	VisitMethodCall (MethodCallExpression m)
virtual ReadOnlyCollection< Expression >	VisitExpressionList (ReadOnlyCollection< Expression > original)
virtual MemberAssignment	VisitMemberAssignment (MemberAssignment assignment)
virtual MemberMemberBinding	VisitMemberMemberBinding (MemberMemberBinding binding)
virtual MemberListBinding	VisitMemberListBinding (MemberListBinding binding)
virtual IEnumerable< MemberBinding >	VisitBindingList (ReadOnlyCollection< MemberBinding > original)
virtual IEnumerable< ElementInit >	VisitElementInitializerList (ReadOnlyCollection< ElementInit > original)
virtual Expression	VisitLambda (LambdaExpression lambda)
virtual NewExpression	VisitNew (NewExpression nex)
virtual Expression	VisitMemberInit (MemberInitExpression init)
virtual Expression	VisitListInit (ListInitExpression init)
virtual Expression	VisitNewArray (NewArrayExpression na)
virtual Expression	VisitInvocation (InvocationExpression iv)

Detailed Description

Evaluates & replaces sub-trees when first candidate is reached (top-down)

Definition at line 49 of file Evaluator.cs.

Constructor & Destructor Documentation

Deveel.Data.Linq.Evaluator.SubtreeEvaluator.SubtreeEvaluator ( HashSet< Expression >  candidates )

inlinepackage

Definition at line 52 of file Evaluator.cs.

                                                                      {
                this.candidates = candidates;
            }

Member Function Documentation

Expression Deveel.Data.Linq.Evaluator.SubtreeEvaluator.Eval ( Expression  exp )

inlinepackage

Definition at line 56 of file Evaluator.cs.

                                                     {
                return this.Visit(exp);
            }

Expression Deveel.Data.Linq.Evaluator.SubtreeEvaluator.Evaluate ( Expression  e )

inlineprivate

Definition at line 70 of file Evaluator.cs.

                                                      {
                if (e.NodeType == ExpressionType.Constant) {
                    return e;
                }
                LambdaExpression lambda = Expression.Lambda(e);
                Delegate fn = lambda.Compile();
                return Expression.Constant(fn.DynamicInvoke(null), e.Type);
            }

override Expression Deveel.Data.Linq.Evaluator.SubtreeEvaluator.Visit ( Expression  exp )

inlinevirtual

Reimplemented from Deveel.Data.Linq.ExpressionVisitor.

Definition at line 60 of file Evaluator.cs.

                                                             {
                if (exp == null) {
                    return null;
                }
                if (candidates.Contains(exp)) {
                    return Evaluate(exp);
                }
                return base.Visit(exp);
            }

Member Data Documentation

HashSet<Expression> Deveel.Data.Linq.Evaluator.SubtreeEvaluator.candidates

private

Definition at line 50 of file Evaluator.cs.

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The documentation for this class was generated from the following file:

• /var/calculate/remote/distfiles/egit-src/deveeldb.git/src/deveeldb-linq/Deveel.Data.Linq.old/Evaluator.cs