fun sizeTreeFromBundle()

in toolargetool/src/main/java/com/gu/toolargetool/TooLargeTool.kt [131:154]

• 24 lines of code
• 2 McCabe index (conditional complexity)

fun sizeTreeFromBundle(bundle: Bundle): SizeTree {
    val results = ArrayList<SizeTree>(bundle.size())
    // We measure the totalSize of each value by measuring the total totalSize of the bundle before and
    // after removing that value and calculating the difference. We make a copy of the original
    // bundle so we can put all the original values back at the end. It's not possible to
    // carry out the measurements on the copy because of the way Android parcelables work
    // under the hood where certain objects are actually stored as references.
    val copy = Bundle(bundle)
    try {
        var bundleSize = sizeAsParcel(bundle)
        // Iterate over copy's keys because we're removing those of the original bundle
        for (key in copy.keySet()) {
            bundle.remove(key)
            val newBundleSize = sizeAsParcel(bundle)
            val valueSize = bundleSize - newBundleSize
            results.add(SizeTree(key, valueSize, emptyList()))
            bundleSize = newBundleSize
        }
    } finally {
        // Put everything back into original bundle
        bundle.putAll(copy)
    }
    return SizeTree("Bundle" + System.identityHashCode(bundle), sizeAsParcel(bundle), results)
}