| static private OnlyStaticPropertiesHaveNullInstance ( string paramName ) : Exception | ||
| paramName | string | |
| return | Exception | |
private static void ValidateAccessor(Expression?instance, MethodInfo method, ParameterInfo[] indexes, ref ReadOnlyCollection <Expression> arguments, string?paramName)
{
ContractUtils.RequiresNotNull(arguments, nameof(arguments));
ValidateMethodInfo(method, nameof(method));
if ((method.CallingConvention & CallingConventions.VarArgs) != 0)
{
throw Error.AccessorsCannotHaveVarArgs(paramName);
}
if (method.IsStatic)
{
if (instance != null)
{
throw Error.OnlyStaticPropertiesHaveNullInstance(nameof(instance));
}
}
else
{
if (instance == null)
{
throw Error.OnlyStaticPropertiesHaveNullInstance(nameof(instance));
}
ExpressionUtils.RequiresCanRead(instance, nameof(instance));
ValidateCallInstanceType(instance.Type, method);
}
ValidateAccessorArgumentTypes(method, indexes, ref arguments, paramName);
}
public static MemberExpression Property(Expression expression, PropertyInfo property)
{
ContractUtils.RequiresNotNull(property, nameof(property));
var mi = property.GetGetMethod(nonPublic: true);
if (mi == null)
{
mi = property.GetSetMethod(nonPublic: true);
if (mi == null)
{
throw Error.PropertyDoesNotHaveAccessor(property, nameof(property));
}
if (mi.GetParameters().Length != 1)
{
throw Error.IncorrectNumberOfMethodCallArguments(mi, nameof(property));
}
}
else if (mi.GetParameters().Length != 0)
{
throw Error.IncorrectNumberOfMethodCallArguments(mi, nameof(property));
}
if (mi.IsStatic)
{
if (expression != null)
{
throw Error.OnlyStaticPropertiesHaveNullInstance(nameof(expression));
}
}
else
{
if (expression == null)
{
throw Error.OnlyStaticPropertiesHaveNullInstance(nameof(property));
}
ExpressionUtils.RequiresCanRead(expression, nameof(expression));
if (!TypeUtils.IsValidInstanceType(property, expression.Type))
{
throw Error.PropertyNotDefinedForType(property, expression.Type, nameof(property));
}
}
ValidateMethodInfo(mi, nameof(property));
return(MemberExpression.Make(expression, property));
}
