|
static private ConditionalAccessRequiresNonStaticMember ( ) : |
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| Результат | ||
public static ConditionalMemberCSharpExpression ConditionalProperty(Expression expression, PropertyInfo property)
{
RequiresCanRead(expression, nameof(expression));
ContractUtils.RequiresNotNull(property, nameof(property));
if (!property.CanRead)
{
throw Error.ConditionalAccessRequiresReadableProperty();
}
if (property.GetIndexParameters().Length != 0)
{
throw Error.ConditionalAccessRequiresReadableProperty();
}
if (property.GetGetMethod(true).IsStatic)
{
throw Error.ConditionalAccessRequiresNonStaticMember();
}
var type = expression.Type.GetNonNullReceiverType();
if (!TypeUtils.IsValidInstanceType(property, type))
{
throw LinqError.PropertyNotDefinedForType(property, type);
}
return(ConditionalMemberCSharpExpression.Make(expression, property));
}
private static void ValidateConditionalMethod(ref Expression instance, MethodInfo method)
{
ContractUtils.RequiresNotNull(method, nameof(method));
ValidateMethodInfo(method);
if (method.IsStatic)
{
var parameters = method.GetParametersCached();
if (!method.IsDefined(typeof(ExtensionAttribute), false) || parameters.Length == 0 /* NB: someone could craft a method with [ExtensionAttribute] in IL */)
{
throw Error.ConditionalAccessRequiresNonStaticMember();
}
if (instance == null)
{
throw Error.ExtensionMethodRequiresInstance();
}
instance = ValidateOneArgument(parameters[0], instance);
}
else
{
RequiresCanRead(instance, nameof(instance));
var type = instance.Type.GetNonNullReceiverType();
ValidateCallInstanceType(type, method);
}
}
public static ConditionalMemberCSharpExpression ConditionalField(Expression expression, FieldInfo field)
{
RequiresCanRead(expression, nameof(expression));
ContractUtils.RequiresNotNull(field, nameof(field));
if (field.IsStatic)
{
throw Error.ConditionalAccessRequiresNonStaticMember();
}
var type = expression.Type.GetNonNullReceiverType();
if (!TypeUtils1.AreReferenceAssignable(field.DeclaringType, type))
{
throw LinqError.FieldInfoNotDefinedForType(field.DeclaringType, field.Name, type);
}
return(ConditionalMemberCSharpExpression.Make(expression, field));
}
