protected override Expression VisitConstant(ConstantExpression node)
{
if (node.CheckNotNull(nameof(node)).Value.AsQueryableResourceTypeOrNull() is Type resourceType)
{
var typeInfo = _typeInfoProvider.GetTypeInfo(resourceType);
var queryableResourceDescriptor = new QueryableResourceDescriptor(typeInfo);
return(new ConstantExpression(queryableResourceDescriptor));
}
if (node.Value is ConstantQueryArgument constantQueryArgument)
{
var copy = new DynamicObject(constantQueryArgument.Value);
foreach (var property in copy.Properties.AsEmptyIfNull())
{
if (property.Value.AsQueryableResourceTypeOrNull() is Type resourceTypePropertyValue)
{
var typeInfo = _typeInfoProvider.GetTypeInfo(resourceTypePropertyValue);
var queryableResourceDescriptor = new QueryableResourceDescriptor(typeInfo);
property.Value = queryableResourceDescriptor;
}
}
return(new ConstantExpression(new ConstantQueryArgument(copy), node.Type));
}
if (node.Value is CancellationToken)
{
var substitutionValue = new SubstitutionValue(node.Type);
return(new ConstantExpression(substitutionValue, node.Type));
}
return(base.VisitConstant(node));
}
protected override ConstantExpression VisitConstant(ConstantExpression expression)
{
var queryable = AsQueryableOrNull(expression.Value);
if (!(queryable is null))
{
var typeInfo = _typeInfoProvider.Get(queryable.ElementType);
var queryableResourceDescriptor = new QueryableResourceDescriptor(typeInfo);
return(new ConstantExpression(queryableResourceDescriptor));
}
var constantQueryArgument = expression.Value as ConstantQueryArgument;
if (!(constantQueryArgument is null))
{
var newConstantQueryArgument = new ConstantQueryArgument(constantQueryArgument);
var properties = newConstantQueryArgument.Properties ?? Enumerable.Empty <Property>();
foreach (var property in properties)
{
var value = AsQueryableOrNull(property.Value);
if (!(value is null))
{
var typeInfo = _typeInfoProvider.Get(value.ElementType);
var queryableResourceDescriptor = new QueryableResourceDescriptor(typeInfo);
property.Value = queryableResourceDescriptor;
}
}
return(new ConstantExpression(newConstantQueryArgument, expression.Type));
}
return(base.VisitConstant(expression));
}
protected override ConstantExpression VisitConstant(ConstantExpression node)
{
var queryable = node.CheckNotNull(nameof(node)).Value.AsQueryableOrNull();
if (queryable != null)
{
var typeInfo = _typeInfoProvider.GetTypeInfo(queryable.ElementType);
var queryableResourceDescriptor = new QueryableResourceDescriptor(typeInfo);
return(new ConstantExpression(queryableResourceDescriptor));
}
if (node.Value is ConstantQueryArgument constantQueryArgument)
{
var newConstantQueryArgument = new ConstantQueryArgument(constantQueryArgument);
var properties = newConstantQueryArgument.Properties ?? Enumerable.Empty <Property>();
foreach (var property in properties)
{
var value = property.Value.AsQueryableOrNull();
if (value != null)
{
var typeInfo = _typeInfoProvider.GetTypeInfo(value.ElementType);
var queryableResourceDescriptor = new QueryableResourceDescriptor(typeInfo);
property.Value = queryableResourceDescriptor;
}
}
return(new ConstantExpression(newConstantQueryArgument, node.Type));
}
return(base.VisitConstant(node));
}
protected override ConstantExpression VisitConstant(ConstantExpression expression)
{
var queryable = AsQueryableOrNull(expression.Value);
if (!ReferenceEquals(null, queryable))
{
var queryableResourceDescriptor = new QueryableResourceDescriptor(queryable.ElementType);
return(new ConstantExpression(queryableResourceDescriptor));
}
var constantQueryArgument = expression.Value as ConstantQueryArgument;
if (!ReferenceEquals(null, constantQueryArgument))
{
var newConstantQueryArgument = new ConstantQueryArgument(constantQueryArgument);
var properties = newConstantQueryArgument.Properties ?? Enumerable.Empty <Property>();
foreach (var property in properties)
{
var value = AsQueryableOrNull(property.Value);
if (!ReferenceEquals(null, value))
{
var queryableResourceDescriptor = new QueryableResourceDescriptor(value.ElementType);
property.Value = queryableResourceDescriptor;
}
}
return(new ConstantExpression(newConstantQueryArgument, expression.Type));
}
return(base.VisitConstant(expression));
}
