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Merge pull request #1924 from eamonnmcmanus/master

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Adjust some minor details of #1391.
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Éamonn McManus 2021-08-02 17:37:53 -07:00 committed by GitHub
commit a14f1618b5
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2 changed files with 32 additions and 31 deletions
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6
gson/src/main/java/com/google/gson/internal/$Gson$Types.java
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@ -339,13 +339,13 @@ public final class $Gson$Types {
}
public static Type resolve(Type context, Class<?> contextRawType, Type toResolve) {
return resolve(context, contextRawType, toResolve, new HashMap<TypeVariable, Type>());
return resolve(context, contextRawType, toResolve, new HashMap<TypeVariable<?>, Type>());
}
private static Type resolve(Type context, Class<?> contextRawType, Type toResolve,
Map<TypeVariable, Type> visitedTypeVariables) {
Map<TypeVariable<?>, Type> visitedTypeVariables) {
// this implementation is made a little more complicated in an attempt to avoid object-creation
TypeVariable resolving = null;
TypeVariable<?> resolving = null;
while (true) {
if (toResolve instanceof TypeVariable) {
TypeVariable<?> typeVariable = (TypeVariable<?>) toResolve;

57
gson/src/test/java/com/google/gson/functional/ReusedTypeVariablesFullyResolveTest.java
View File

@ -1,16 +1,17 @@
package com.google.gson.functional;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import org.junit.Before;
import org.junit.Test;
import java.util.Collection;
import java.util.Iterator;
import java.util.Set;
import static org.junit.Assert.*;
/**
* This test covers the scenario described in #1390 where a type variable needs to be used
* by a type definition multiple times. Both type variable references should resolve to the
@ -18,37 +19,37 @@ import static org.junit.Assert.*;
*/
public class ReusedTypeVariablesFullyResolveTest {
private Gson gson;
private Gson gson;
@Before
public void setUp() {
gson = new GsonBuilder().create();
}
@Before
public void setUp() {
gson = new GsonBuilder().create();
}
@SuppressWarnings("ConstantConditions") // The instances were being unmarshaled as Strings instead of TestEnums
@Test
public void testGenericsPreservation() {
TestEnumSetCollection withSet = gson.fromJson("{\"collection\":[\"ONE\",\"THREE\"]}", TestEnumSetCollection.class);
Iterator<TestEnum> iterator = withSet.collection.iterator();
assertNotNull(withSet);
assertNotNull(withSet.collection);
assertEquals(2, withSet.collection.size());
TestEnum first = iterator.next();
TestEnum second = iterator.next();
@SuppressWarnings("ConstantConditions") // The instances were being unmarshaled as Strings instead of TestEnums
@Test
public void testGenericsPreservation() {
TestEnumSetCollection withSet = gson.fromJson("{\"collection\":[\"ONE\",\"THREE\"]}", TestEnumSetCollection.class);
Iterator<TestEnum> iterator = withSet.collection.iterator();
assertNotNull(withSet);
assertNotNull(withSet.collection);
assertEquals(2, withSet.collection.size());
TestEnum first = iterator.next();
TestEnum second = iterator.next();
assertTrue(first instanceof TestEnum);
assertTrue(second instanceof TestEnum);
}
assertTrue(first instanceof TestEnum);
assertTrue(second instanceof TestEnum);
}
enum TestEnum { ONE, TWO, THREE }
enum TestEnum { ONE, TWO, THREE }
private static class TestEnumSetCollection extends SetCollection<TestEnum> {}
private static class TestEnumSetCollection extends SetCollection<TestEnum> {}
private static class SetCollection<T> extends BaseCollection<T, Set<T>> {}
private static class SetCollection<T> extends BaseCollection<T, Set<T>> {}
private static class BaseCollection<U, C extends Collection<U>>
{
public C collection;
}
private static class BaseCollection<U, C extends Collection<U>>
{
public C collection;
}
}