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// Test field initialization
// fields, initializers, static initializers, constructors.
import org.checkerframework.checker.nullness.qual.*;
interface FunctionInit<T extends @Nullable Object, R> {
R apply(T t);
}
interface Consumer<T> {
void consume(T t);
}
// For test purposes, f1 is never initialized
@SuppressWarnings({
"initialization.fields.uninitialized",
"initialization.static.fields.uninitialized"
})
class LambdaInit {
String f1;
String f2 = "";
@Nullable String f3 = "";
String f1b;
FunctionInit<String, String> ff0 =
s -> {
// :: error: (dereference.of.nullable)
f1.toString();
// :: error: (dereference.of.nullable)
f1b.toString();
f2.toString();
// :: error: (dereference.of.nullable)
f3.toString();
return "";
};
// Test field value refinement after initializer. f1b should still be @Nullable in the lambda.
Object o1 = f1b = "";
String f4;
{
f3 = "";
f4 = "";
FunctionInit<String, String> ff0 =
s -> {
// :: error: (dereference.of.nullable)
f1.toString();
f2.toString();
// :: error: (dereference.of.nullable)
f3.toString();
f4.toString();
return "";
};
}
String f5;
LambdaInit() {
f5 = "";
FunctionInit<String, String> ff0 =
s -> {
// :: error: (dereference.of.nullable)
f1.toString();
f2.toString();
// :: error: (dereference.of.nullable)
f3.toString();
f5.toString();
return "";
};
}
// // This is a bug
// // Could probably be fixed with CommittmentTreeAnnotator::visitMethod
// // Or more likely, TypeFromTree::212
// // AnnotatedTypeFactory::getImplicitReceiverType::1146(there is a todo...)
// Object o = new Object() {
// @Override
// public String toString() {
// f1.toString();
// f2.toString();
// return "";
// }
// };
//
// Works!
void method() {
FunctionInit<String, String> ff0 =
s -> {
f1.toString();
f2.toString();
// :: error: (dereference.of.nullable)
f3.toString();
return "";
};
}
// Test for nested
class Nested {
FunctionInit<String, String> ff0 =
s -> {
f1.toString();
f2.toString();
// :: error: (dereference.of.nullable)
f3.toString();
return "";
};
String f4;
{
f3 = "";
f4 = "";
FunctionInit<String, String> ff0 =
s -> {
f1.toString();
f2.toString();
// :: error: (dereference.of.nullable)
f3.toString();
f4.toString();
return "";
};
}
String f5;
Nested() {
f5 = "";
FunctionInit<String, String> ff0 =
s -> {
f1.toString();
f2.toString();
// :: error: (dereference.of.nullable)
f3.toString();
f5.toString();
return "";
};
}
void method() {
FunctionInit<String, String> ff0 =
s -> {
f1.toString();
f2.toString();
// :: error: (dereference.of.nullable)
f3.toString();
return "";
};
}
}
// Test for nested in a lambda
Consumer<String> func =
s -> {
Consumer<String> ff0 =
s2 -> {
// :: error: (dereference.of.nullable)
f1.toString();
f2.toString();
// :: error: (dereference.of.nullable)
f3.toString();
};
};
// Tests for static initializers.
static String sf1;
static String sf2 = "";
static @Nullable String sf3 = "";
static String sf1b;
static FunctionInit<String, String> sff0 =
s -> {
// This is an issue with static initializers in general
// // :: error: (dereference.of.nullable)
sf1.toString();
// This is an issue with static initializers in general
// // :: error: (dereference.of.nullable)
sf1b.toString();
sf2.toString();
// :: error: (dereference.of.nullable)
sf3.toString();
return "";
};
// Test field value refinement after initializer. f1b should still be null.
static Object so1 = sf1b = "";
static String sf4;
static {
sf3 = "";
sf4 = "";
FunctionInit<String, String> sff0 =
s -> {
// This is an issue with static initializers in general
// // :: error: (dereference.of.nullable)
sf1.toString();
sf2.toString();
// :: error: (dereference.of.nullable)
sf3.toString();
sf4.toString();
return "";
};
}
}
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