rspec/rules/S131/java/rule.adoc
Fred Tingaud 51369b610e
Make sure that includes are always surrounded by empty lines (#2270)
When an include is not surrounded by empty lines, its content is inlined
on the same line as the adjacent content. That can lead to broken tags
and other display issues.
This PR fixes all such includes and introduces a validation step that
forbids introducing the same problem again.
2023-06-22 10:38:01 +02:00

91 lines
1.4 KiB
Plaintext

== Why is this an issue?
include::../description.adoc[]
=== Noncompliant code example
[source,java]
----
switch (param) { //missing default clause
case 0:
doSomething();
break;
case 1:
doSomethingElse();
break;
}
switch (param) {
default: // default clause should be the last one
error();
break;
case 0:
doSomething();
break;
case 1:
doSomethingElse();
break;
}
----
=== Compliant solution
[source,java]
----
switch (param) {
case 0:
doSomething();
break;
case 1:
doSomethingElse();
break;
default:
error();
break;
}
----
=== Exceptions
If the ``++switch++`` parameter is an ``++Enum++`` and if all the constants of this enum are used in the ``++case++`` statements, then no ``++default++`` clause is expected.
Example:
[source,java]
----
public enum Day {
SUNDAY, MONDAY
}
...
switch(day) {
case SUNDAY:
doSomething();
break;
case MONDAY:
doSomethingElse();
break;
}
----
== Resources
* https://cwe.mitre.org/data/definitions/478[MITRE, CWE-478] - Missing Default Case in Switch Statement
* https://wiki.sei.cmu.edu/confluence/x/RtYxBQ[CERT, MSC01-C.] - Strive for logical completeness
ifdef::env-github,rspecator-view[]
'''
== Implementation Specification
(visible only on this page)
include::../message.adoc[]
'''
== Comments And Links
(visible only on this page)
include::../comments-and-links.adoc[]
endif::env-github,rspecator-view[]