protected virtual DbLambda VisitLambda(DbLambda lambda)
{
EntityUtil.CheckArgumentNull(lambda, "lambda");
DbLambda result = lambda;
IList <DbVariableReferenceExpression> newFormals = this.VisitList(lambda.Variables, varRef =>
{
TypeUsage newVarType = this.VisitTypeUsage(varRef.ResultType);
if (!object.ReferenceEquals(varRef.ResultType, newVarType))
{
return(CqtBuilder.Variable(newVarType, varRef.VariableName));
}
else
{
return(varRef);
}
}
);
this.EnterScope(newFormals.ToArray()); // ToArray: Don't pass the List instance directly to OnEnterScope
DbExpression newBody = this.VisitExpression(lambda.Body);
this.ExitScope();
if (!object.ReferenceEquals(lambda.Variables, newFormals) ||
!object.ReferenceEquals(lambda.Body, newBody))
{
result = CqtBuilder.Lambda(newBody, newFormals);
}
return(result);
}