rspec/rules/S1121/java/rule.adoc

== Why is this an issue?

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=== Exceptions

Assignments in ``++while++`` statement conditions, and assignments enclosed in relational expressions are ignored.

----
BufferedReader br = new BufferedReader(/* ... */);
String line;
while ((line = br.readLine()) != null) {...}
if ((i = j) >= 1) {...}
----

Chained assignments, including compound assignments, are ignored.

----
int i = j = 0;
int k = (j += 1);
result = (bresult = new byte[len]);
----

== Resources

* https://cwe.mitre.org/data/definitions/481[MITRE, CWE-481] - Assigning instead of Comparing
* https://wiki.sei.cmu.edu/confluence/x/ZNYxBQ[CERT, EXP45-C.] - Do not perform assignments in selection statements
* https://wiki.sei.cmu.edu/confluence/x/ITZGBQ[CERT, EXP51-J.] - Do not perform assignments in conditional expressions

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== Implementation Specification
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== Comments And Links
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