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nullable annotations to ReadableMap, WritableMap, ReadableArray, Writable. (#23329)

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Summary:
Kotlin is getting traction and more developers write RN native modules in it. This PR adds nullable annotations to help with Kotlin null inference and improve developer experience. Also it'll help checking code quality using lint.

I skimmed through JavaOnlyMap.java, JavaOnlyArray.java, ReadableNativeArray.java, ReadableNativeMap.java, WritableNativeArray.java and WritableNativeMap.java to infer nullability.

This is breaking change to Kotlin code.

[Android] [Changed] - Add nullable annotations to ReadableMap, WritableMap, ReadableArray, Writable.
Pull Request resolved: https://github.com/facebook/react-native/pull/23329

Differential Revision: D14002571

Pulled By: cpojer

fbshipit-source-id: 899d8b3b0a5dad43e8300e6c4ea4208cca0f01a9
This commit is contained in:
Dulmandakh
2019-02-08 04:08:37 -08:00
committed by Facebook Github Bot
parent d002d30325
commit b640b6faf7
10 changed files with 114 additions and 88 deletions
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ReactAndroid/src/main/java/com/facebook/react/bridge/JavaOnlyArray.java
+10 -7
View File
@@ -11,6 +11,9 @@ import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
/**
* Java {@link ArrayList} backed implementation of {@link ReadableArray} and {@link WritableArray}
* Instances of this class SHOULD NOT be used for communication between java and JS, use instances
@@ -95,7 +98,7 @@ public class JavaOnlyArray implements ReadableArray, WritableArray {
}
@Override
public String getString(int index) {
public @Nullable String getString(int index) {
return (String) mBackingList.get(index);
}
@@ -115,12 +118,12 @@ public class JavaOnlyArray implements ReadableArray, WritableArray {
}
@Override
public Dynamic getDynamic(int index) {
public @Nonnull Dynamic getDynamic(int index) {
return DynamicFromArray.create(this, index);
}
@Override
public ReadableType getType(int index) {
public @Nonnull ReadableType getType(int index) {
Object object = mBackingList.get(index);
if (object == null) {
@@ -157,17 +160,17 @@ public class JavaOnlyArray implements ReadableArray, WritableArray {
}
@Override
public void pushString(String value) {
public void pushString(@Nonnull String value) {
mBackingList.add(value);
}
@Override
public void pushArray(WritableArray array) {
public void pushArray(@Nullable WritableArray array) {
mBackingList.add(array);
}
@Override
public void pushMap(WritableMap map) {
public void pushMap(@Nonnull WritableMap map) {
mBackingList.add(map);
}
@@ -177,7 +180,7 @@ public class JavaOnlyArray implements ReadableArray, WritableArray {
}
@Override
public ArrayList<Object> toArrayList() {
public @Nonnull ArrayList<Object> toArrayList() {
return new ArrayList<Object>(mBackingList);
}