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Commit eb937f4d authored by Hao Ke's avatar Hao Ke Committed by Automerger Merge Worker
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Merge "Adding typed Parcel readMap and readHashMap APIs." am: c1f406eb am:... 

Merge "Adding typed Parcel readMap and readHashMap APIs." am: c1f406eb am: 4c669c66 am: 9bc15484

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1882888

Change-Id: Ica5ee4975ff02abcd126372d6372db4ea3ace057
parents d6c436b8 9bc15484

core/api/current.txt

+2 −0
Original line number Diff line number Diff line
@@ -31467,6 +31467,7 @@ package android.os { 
    method public float readFloat();

    method public void readFloatArray(@NonNull float[]);

    method @Nullable public java.util.HashMap readHashMap(@Nullable ClassLoader);

    method @Nullable public <K, V> java.util.HashMap<K,V> readHashMap(@Nullable ClassLoader, @NonNull Class<? extends K>, @NonNull Class<? extends V>);

    method public int readInt();

    method public void readIntArray(@NonNull int[]);

    method public <T extends android.os.IInterface> void readInterfaceArray(@NonNull T[], @NonNull java.util.function.Function<android.os.IBinder,T>);
@@ -31476,6 +31477,7 @@ package android.os { 
    method public long readLong();

    method public void readLongArray(@NonNull long[]);

    method public void readMap(@NonNull java.util.Map, @Nullable ClassLoader);

    method public <K, V> void readMap(@NonNull java.util.Map<? super K,? super V>, @Nullable ClassLoader, @NonNull Class<K>, @NonNull Class<V>);

    method @Nullable public <T extends android.os.Parcelable> T readParcelable(@Nullable ClassLoader);

    method @Nullable public <T extends android.os.Parcelable> T readParcelable(@Nullable ClassLoader, @NonNull Class<T>);

    method @Nullable public android.os.Parcelable[] readParcelableArray(@Nullable ClassLoader);

core/java/android/os/Parcel.java

+59 −11
Original line number Diff line number Diff line
@@ -2992,8 +2992,24 @@ public final class Parcel { 
     * from the parcel at the current dataPosition().

     */

    public final void readMap(@NonNull Map outVal, @Nullable ClassLoader loader) {

        int N = readInt();

        readMapInternal(outVal, N, loader);

        int n = readInt();

        readMapInternal(outVal, n, loader, /* clazzKey */ null, /* clazzValue */ null);

    }



    /**

     * Same as {@link #readMap(Map, ClassLoader)} but accepts {@code clazzKey} and

     * {@code clazzValue} parameter as the types required for each key and value pair.

     *

     * @throws BadParcelableException If the item to be deserialized is not an instance of that

     * class or any of its children class

     */

    public <K, V> void readMap(@NonNull Map<? super K, ? super V> outVal,

            @Nullable ClassLoader loader, @NonNull Class<K> clazzKey,

            @NonNull Class<V> clazzValue) {

        Objects.requireNonNull(clazzKey);

        Objects.requireNonNull(clazzValue);

        int n = readInt();

        readMapInternal(outVal, n, loader, clazzKey, clazzValue);

    }



    /**
@@ -3031,15 +3047,37 @@ public final class Parcel { 
    @Nullable

    public final HashMap readHashMap(@Nullable ClassLoader loader)

    {

        int N = readInt();

        if (N < 0) {

        int n = readInt();

        if (n < 0) {

            return null;

        }

        HashMap m = new HashMap(N);

        readMapInternal(m, N, loader);

        HashMap m = new HashMap(n);

        readMapInternal(m, n, loader, /* clazzKey */ null, /* clazzValue */ null);

        return m;

    }



    /**

     * Same as {@link #readHashMap(ClassLoader)} but accepts {@code clazzKey} and

     * {@code clazzValue} parameter as the types required for each key and value pair.

     *

     * @throws BadParcelableException if the item to be deserialized is not an instance of that

     * class or any of its children class

     */

    @SuppressLint({"ConcreteCollection", "NullableCollection"})

    @Nullable

    public <K, V> HashMap<K, V> readHashMap(@Nullable ClassLoader loader,

            @NonNull Class<? extends K> clazzKey, @NonNull Class<? extends V> clazzValue) {

        Objects.requireNonNull(clazzKey);

        Objects.requireNonNull(clazzValue);

        int n = readInt();

        if (n < 0) {

            return null;

        }

        HashMap<K, V> map = new HashMap<>(n);

        readMapInternal(map, n, loader, clazzKey, clazzValue);

        return map;

    }



    /**

     * Read and return a new Bundle object from the parcel at the current

     * dataPosition().  Returns null if the previously written Bundle object was
@@ -4472,13 +4510,23 @@ public final class Parcel { 
        destroy();

    }



    /* package */ void readMapInternal(@NonNull Map outVal, int N,

    /**

     * To be replaced by {@link #readMapInternal(Map, int, ClassLoader, Class, Class)}, but keep

     * the old API for compatibility usages.

     */

    /* package */ void readMapInternal(@NonNull Map outVal, int n,

            @Nullable ClassLoader loader) {

        while (N > 0) {

            Object key = readValue(loader);

            Object value = readValue(loader);

        readMapInternal(outVal, n, loader, /* clazzKey */null, /* clazzValue */null);

    }



    /* package */ <K, V> void readMapInternal(@NonNull Map<? super K, ? super V> outVal, int n,

            @Nullable ClassLoader loader, @Nullable Class<K> clazzKey,

            @Nullable Class<V> clazzValue) {

        while (n > 0) {

            K key = readValue(loader, clazzKey);

            V value = readValue(loader, clazzValue);

            outVal.put(key, value);

            N--;

            n--;

        }

    }