internal static ProjectionPlan CompilePlan(LambdaExpression projection, Dictionary <Expression, Expression> normalizerRewrites)
{
Debug.Assert(projection != null, "projection != null");
Debug.Assert(projection.Parameters.Count == 1, "projection.Parameters.Count == 1");
Debug.Assert(
projection.Body.NodeType == ExpressionType.Constant ||
projection.Body.NodeType == ExpressionType.MemberInit ||
projection.Body.NodeType == ExpressionType.MemberAccess ||
projection.Body.NodeType == ExpressionType.Convert ||
projection.Body.NodeType == ExpressionType.ConvertChecked ||
projection.Body.NodeType == ExpressionType.New,
"projection.Body.NodeType == Constant, MemberInit, MemberAccess, Convert(Checked) New");
ProjectionPlanCompiler rewriter = new ProjectionPlanCompiler(normalizerRewrites);
#if TRACE_CLIENT_PROJECTIONS
Trace.WriteLine("Projection: " + projection);
#endif
Expression plan = rewriter.Visit(projection);
#if TRACE_CLIENT_PROJECTIONS
Trace.WriteLine("Becomes: " + plan);
#endif
ProjectionPlan result = new ProjectionPlan();
result.Plan = (Func <object, object, Type, object>)((LambdaExpression)plan).Compile();
result.ProjectedType = projection.Body.Type;
#if DEBUG
result.SourceProjection = projection;
result.TargetProjection = plan;
#endif
return(result);
}
internal static ProjectionPlan CompilePlan(LambdaExpression projection, Dictionary<Expression, Expression> normalizerRewrites)
{
Debug.Assert(projection != null, "projection != null");
Debug.Assert(projection.Parameters.Count == 1, "projection.Parameters.Count == 1");
Debug.Assert(
projection.Body.NodeType == ExpressionType.Constant ||
projection.Body.NodeType == ExpressionType.MemberInit ||
projection.Body.NodeType == ExpressionType.MemberAccess ||
projection.Body.NodeType == ExpressionType.Convert ||
projection.Body.NodeType == ExpressionType.ConvertChecked ||
projection.Body.NodeType == ExpressionType.New,
"projection.Body.NodeType == Constant, MemberInit, MemberAccess, Convert(Checked) New");
ProjectionPlanCompiler rewriter = new ProjectionPlanCompiler(normalizerRewrites);
#if TRACE_CLIENT_PROJECTIONS
Trace.WriteLine("Projection: " + projection);
#endif
Expression plan = rewriter.Visit(projection);
#if TRACE_CLIENT_PROJECTIONS
Trace.WriteLine("Becomes: " + plan);
#endif
ProjectionPlan result = new ProjectionPlan();
result.Plan = (Func<object, object, Type, object>)((LambdaExpression)plan).Compile();
result.ProjectedType = projection.Body.Type;
#if DEBUG
result.SourceProjection = projection;
result.TargetProjection = plan;
#endif
return result;
}