Example usage for android.support.v4.util SupportContainerInternals EMPTY_INTS

Introduction

In this page you can find the example usage for android.support.v4.util SupportContainerInternals EMPTY_INTS.

Prototype

null EMPTY_INTS

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Usage

From source file:io.sweers.arraysetbackport.ArraySet.java

/**
 * Create a new empty ArraySet.  The default capacity of an array map is 0, and
 * will grow once items are added to it.
 *//* w  w w .  ja v  a  2 s. c o m*/
public ArraySet() {
    mHashes = SupportContainerInternals.EMPTY_INTS;
    mArray = SupportContainerInternals.EMPTY_OBJECTS;
    mSize = 0;
}

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From source file:io.sweers.arraysetbackport.ArraySet.java

/**
 * Create a new ArraySet with a given initial capacity.
 *///from   w  w w. jav a 2  s .  co m
public ArraySet(int capacity) {
    if (capacity == 0) {
        mHashes = SupportContainerInternals.EMPTY_INTS;
        mArray = SupportContainerInternals.EMPTY_OBJECTS;
    } else {
        allocArrays(capacity);
    }
    mSize = 0;
}

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From source file:io.sweers.arraysetbackport.ArraySet.java

/**
 * Make the array map empty.  All storage is released.
 *//*from  w  ww.j av a 2 s . co m*/
@Override
public void clear() {
    if (mSize != 0) {
        freeArrays(mHashes, mArray, mSize);
        mHashes = SupportContainerInternals.EMPTY_INTS;
        mArray = SupportContainerInternals.EMPTY_OBJECTS;
        mSize = 0;
    }
}

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From source file:io.sweers.arraysetbackport.ArraySet.java

/**
 * Remove the key/value mapping at the given index.
 * @param index The desired index, must be between 0 and {@link #size()}-1.
 * @return Returns the value that was stored at this index.
 *//*from  w ww.  j a va 2s  .  com*/
public E removeAt(int index) {
    final Object old = mArray[index];
    if (mSize <= 1) {
        // Now empty.
        if (DEBUG)
            Log.d(TAG, "remove: shrink from " + mHashes.length + " to 0");
        freeArrays(mHashes, mArray, mSize);
        mHashes = SupportContainerInternals.EMPTY_INTS;
        mArray = SupportContainerInternals.EMPTY_OBJECTS;
        mSize = 0;
    } else {
        if (mHashes.length > (BASE_SIZE * 2) && mSize < mHashes.length / 3) {
            // Shrunk enough to reduce size of arrays.  We don't allow it to
            // shrink smaller than (BASE_SIZE*2) to avoid flapping between
            // that and BASE_SIZE.
            final int n = mSize > (BASE_SIZE * 2) ? (mSize + (mSize >> 1)) : (BASE_SIZE * 2);

            if (DEBUG)
                Log.d(TAG, "remove: shrink from " + mHashes.length + " to " + n);

            final int[] ohashes = mHashes;
            final Object[] oarray = mArray;
            allocArrays(n);

            mSize--;
            if (index > 0) {
                if (DEBUG)
                    Log.d(TAG, "remove: copy from 0-" + index + " to 0");
                System.arraycopy(ohashes, 0, mHashes, 0, index);
                System.arraycopy(oarray, 0, mArray, 0, index);
            }
            if (index < mSize) {
                if (DEBUG)
                    Log.d(TAG, "remove: copy from " + (index + 1) + "-" + mSize + " to " + index);
                System.arraycopy(ohashes, index + 1, mHashes, index, mSize - index);
                System.arraycopy(oarray, index + 1, mArray, index, mSize - index);
            }
        } else {
            mSize--;
            if (index < mSize) {
                if (DEBUG)
                    Log.d(TAG, "remove: move " + (index + 1) + "-" + mSize + " to " + index);
                System.arraycopy(mHashes, index + 1, mHashes, index, mSize - index);
                System.arraycopy(mArray, index + 1, mArray, index, mSize - index);
            }
            mArray[mSize] = null;
        }
    }
    return (E) old;
}

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