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import org.checkerframework.checker.nullness.qual.*;
import org.checkerframework.checker.nullness.qual.NonNull;
class LogicOperations {
void andTrueClause(@Nullable Object a) {
if (a != null && helper()) {
a.toString();
}
}
void andTrueClauseReverse(@Nullable Object a) {
if (helper() && a != null) {
a.toString();
}
}
void oneAndComplement(@Nullable Object a) {
if (a != null && helper()) {
a.toString();
return;
}
// :: error: (dereference.of.nullable)
a.toString(); // error
}
void repAndComplement(@Nullable Object a, @Nullable Object b) {
if (a == null && b == null) {
// :: error: (dereference.of.nullable)
a.toString(); // error
return;
}
// :: error: (dereference.of.nullable)
a.toString(); // error
}
void oneOrComplement(@Nullable Object a) {
if (a == null || helper()) {
// :: error: (dereference.of.nullable)
a.toString(); // error
return;
}
a.toString();
}
void simpleOr1(@Nullable Object a, @Nullable Object b) {
if (a != null || b != null) {
// :: error: (dereference.of.nullable)
a.toString(); // error
}
}
void simpleOr2(@Nullable Object a, @Nullable Object b) {
if (a != null || b != null) {
// :: error: (dereference.of.nullable)
b.toString(); // error
}
}
void sideeffect() {
Object a = "m";
if ((a = null) != "n") {
// :: error: (assignment.type.incompatible)
@NonNull Object l1 = a;
}
// :: error: (assignment.type.incompatible)
@NonNull Object l2 = a;
}
static boolean helper() {
return true;
}
}
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