protected void addMapping()

in src/main/java/org/apache/commons/collections4/map/LRUMap.java [240:276]
36 lines of code
9 McCabe index (conditional complexity)

    protected void addMapping(final int hashIndex, final int hashCode, final K key, final V value) {
        if (isFull()) {
            LinkEntry<K, V> reuse = header.after;
            boolean removeLRUEntry = false;
            if (scanUntilRemovable) {
                while (reuse != header && reuse != null) {
                    if (removeLRU(reuse)) {
                        removeLRUEntry = true;
                        break;
                    }
                    reuse = reuse.after;
                }
                if (reuse == null) {
                    throw new IllegalStateException(
                        "Entry.after=null, header.after=" + header.after + " header.before=" + header.before +
                        " key=" + key + " value=" + value + " size=" + size + " maxSize=" + maxSize +
                        " This should not occur if your keys are immutable and you used synchronization properly.");
                }
            } else {
                removeLRUEntry = removeLRU(reuse);
            }

            if (removeLRUEntry) {
                if (reuse == null) {
                    throw new IllegalStateException(
                        "reuse=null, header.after=" + header.after + " header.before=" + header.before +
                        " key=" + key + " value=" + value + " size=" + size + " maxSize=" + maxSize +
                        " This should not occur if your keys are immutable and you used synchronization properly.");
                }
                reuseMapping(reuse, hashIndex, hashCode, key, value);
            } else {
                super.addMapping(hashIndex, hashCode, key, value);
            }
        } else {
            super.addMapping(hashIndex, hashCode, key, value);
        }
    }