rspec/rules/S3218/rule.adoc
2021-02-02 16:54:43 +01:00

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It's possible to name the members of an inner class the same as the ``++static++`` members of its enclosing class - possible, but a bad idea. That's because maintainers may be confused about which members are being used where. Instead the inner class' members should be renamed and all the references updated.
== Noncompliant Code Example
----
class Outer
{
public static int A;
public class Inner
{
public int A; //Noncompliant
public int MyProp
{
get { return A; } // Returns inner A. Was that intended?
}
}
}
----
After a rename
----
class Outer
{
public static int A;
public class Inner
{
public int B;
public int MyProp
{
get { return A; } // Still compiles and runs but functionality has changed
}
}
}
----
== Compliant Solution
----
class Outer
{
public static int A;
public class Inner
{
public int InnerA;
public int MyProp
{
get { return InnerA; }
}
}
}
----
== See
* https://wiki.sei.cmu.edu/confluence/x/5DVGBQ[CERT, DCL51-J.] - Do not shadow or obscure identifiers in subscopes