[java] False negatives in AssignmentInOperand Rule

[Noah0120]

Affects PMD Version:
6.36.0+
7.0.0

Rule:
AssignmentInOperand
Please provide the rule name and a link to the rule documentation:
https://pmd.github.io/latest/pmd_rules_java_errorprone.html#assignmentinoperand

Description:
The term Operand means that subexpression of. another expression based on #3429.
Therefore, assignment in another expression should be detected.
However, PMD didn't detect the following five cases:

1. assignment in a method argument
2. assignment in a conditional expression
3. assignment in an array index
4. assignment in a method caller
5. assignment in a constructor

Code Sample demonstrating the issue:

class AssignmentInOperand{
        void test(){
        // case1
        keys.contains(k = random.nextLong());
        Character.isJavaIdentifierPart(text.charAt(--j));

        // case2
        addNextStaticMember = ((staticMember.getNextStaticMember() != null) ? true : false) ;
        ((null == theClassMethods) ? (theClassMethods = theClass.getMethods()) : theClassMethods); 

        // case3
        Character.isWhitespace(segment.array[offset++]);
        subPropMatches[i++];

        // case4
        (is = ia.getNext(null)).isPresent();
        (destFile = new File (dest, srcFO.getNameExt ())).exists();

        // case5
        new File(location, projectName = projectNamePrefix + "_" + num).exists();
        }
}

Expected outcome:
These are assignments in another expression.
Therefore, it should be detected.
These are false negatives.

Thank you.

Running PMD through: [CLI]

[VoidxHoshi]

Well, let me have a try.