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static private FieldInfoNotDefinedForType ( object p0, object p1, object p2 ) : |
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| p0 | object | |
| p1 | object | |
| p2 | object | |
| return | ||
public static MemberExpression Field(Expression expression, FieldInfo field)
{
ContractUtils.RequiresNotNull(field, nameof(field));
if (field.IsStatic)
{
if (expression != null)
{
throw Error.OnlyStaticFieldsHaveNullInstance(nameof(expression));
}
}
else
{
if (expression == null)
{
throw Error.OnlyStaticFieldsHaveNullInstance(nameof(field));
}
RequiresCanRead(expression, nameof(expression));
if (!TypeUtils.AreReferenceAssignable(field.DeclaringType, expression.Type))
{
throw Error.FieldInfoNotDefinedForType(field.DeclaringType, field.Name, expression.Type);
}
}
return(MemberExpression.Make(expression, field));
}
/// <summary>
/// Creates a <see cref="MemberExpression"/> accessing a field.
/// </summary>
/// <param name="expression">The containing object of the field. This can be null for static fields.</param>
/// <param name="field">The field to be accessed.</param>
/// <returns>The created <see cref="MemberExpression"/>.</returns>
public static MemberExpression Field(Expression expression, FieldInfo field)
{
ContractUtils.RequiresNotNull(field, "field");
if (field.IsStatic)
{
if (expression != null)
{
throw new ArgumentException(Strings.OnlyStaticFieldsHaveNullInstance, "expression");
}
}
else
{
if (expression == null)
{
throw new ArgumentException(Strings.OnlyStaticFieldsHaveNullInstance, "field");
}
RequiresCanRead(expression, "expression");
if (!TypeHelper.AreReferenceAssignable(field.DeclaringType, expression.Type))
{
throw Error.FieldInfoNotDefinedForType(field.DeclaringType, field.Name, expression.Type);
}
}
return(MemberExpression.Make(expression, field));
}
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));
}
