public String toString()

in src/main/java/org/apache/commons/collections4/map/Flat3Map.java [1220:1251]

• 31 lines of code
• 12 McCabe index (conditional complexity)

    public String toString() {
        if (delegateMap != null) {
            return delegateMap.toString();
        }
        if (size == 0) {
            return "{}";
        }
        final StringBuilder buf = new StringBuilder(128);
        buf.append('{');
        switch (size) {  // drop through
        case 3:
            buf.append(key3 == this ? "(this Map)" : key3);
            buf.append('=');
            buf.append(value3 == this ? "(this Map)" : value3);
            buf.append(CollectionUtils.COMMA);
        case 2:
            buf.append(key2 == this ? "(this Map)" : key2);
            buf.append('=');
            buf.append(value2 == this ? "(this Map)" : value2);
            buf.append(CollectionUtils.COMMA);
        case 1:
            buf.append(key1 == this ? "(this Map)" : key1);
            buf.append('=');
            buf.append(value1 == this ? "(this Map)" : value1);
            break;
        // case 0: has already been dealt with
        default:
            throw new IllegalStateException("Invalid map index: " + size);
        }
        buf.append('}');
        return buf.toString();
    }