rspec/rules/S3923/kotlin/rule.adoc
Fred Tingaud 1d958ef229
Modify rule S3923: LaYC identical branches
Co-authored-by: Amélie Renard <44666826+amelie-renard-sonarsource@users.noreply.github.com>
2023-06-08 17:06:21 +02:00

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== Why is this an issue?
Having all branches of a `when` or `if` chain with the same implementation indicates a problem.
In the following code:
[source,kotlin]
----
if (b == 0) { // Noncompliant
doOneMoreThing()
} else {
doOneMoreThing()
}
when (i) { // Noncompliant
1 -> doSomething()
2 -> doSomething()
3 -> doSomething()
else -> doSomething()
}
----
Either there is a copy-paste error that needs fixing or an unnecessary `when` or `if` chain that needs removing.
=== Exceptions
This rule does not apply to `if` chains without `else`, nor to `when` without an `else` clause.
[source,kotlin]
----
if (b == 0) {
doOneMoreThing()
} else if (b == 1) {
doOneMoreThing()
}
----
ifdef::env-github,rspecator-view[]
'''
== Implementation Specification
(visible only on this page)
include::../message.adoc[]
include::../highlighting.adoc[]
'''
== Comments And Links
(visible only on this page)
include::../comments-and-links.adoc[]
endif::env-github,rspecator-view[]