Skip to content

feat: dictionary provider for Strings and Integrals #975

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
wants to merge 11 commits into
base: main
Choose a base branch
from
Open

feat: dictionary provider for Strings and Integrals #975

Show file tree
Hide file tree
Changes from 1 commit
Commits
Show all changes
11 commits
Select commit Hold shift + click to select a range
4884648
feat: allow creation of parameterized and generic array types
oetr Oct 10, 2025
986ede1
chore: add array of lists to stress test
oetr Oct 15, 2025
ac12f41
feat: add meta-annotation for multi-level annotation propagation
oetr Oct 27, 2025
66cc9b4
feat internal: weighted random sampler util
oetr Oct 10, 2025
770e8f8
chore: add global MutationRuntime
oetr Oct 30, 2025
bc4a764
feat: @DictionaryProvider - propagate values to type mutators
oetr Oct 16, 2025
60a488b
feat: String mutator now uses @DictionaryProvider
oetr Oct 16, 2025
4461462
feat: Integral mutators now use @DictionaryProvider
oetr Oct 28, 2025
84240e5
chore: update tests to use the sampler
oetr Oct 29, 2025
e9f25e2
chore: update stress test expectations
oetr Oct 29, 2025
84707f2
chore: increase test timeout
oetr Oct 29, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
18 changes: 12 additions & 6 deletions ...in/java/com/code_intelligence/jazzer/mutation/mutator/collection/ArrayMutatorFactory.java
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,7 @@
import static com.code_intelligence.jazzer.mutation.mutator.collection.ChunkMutations.MutationAction.pickRandomMutationAction;
import static com.code_intelligence.jazzer.mutation.support.Preconditions.require;
import static com.code_intelligence.jazzer.mutation.support.PropertyConstraintSupport.propagatePropertyConstraints;
import static com.code_intelligence.jazzer.mutation.support.TypeSupport.extractRawClass;
import static java.lang.Math.min;
import static java.lang.String.format;

Expand All @@ -35,6 +36,7 @@
import java.lang.reflect.AnnotatedArrayType;
import java.lang.reflect.AnnotatedType;
import java.lang.reflect.Array;
import java.lang.reflect.Type;
import java.util.Arrays;
import java.util.Optional;
import java.util.function.Predicate;
Expand All @@ -53,12 +55,16 @@ public Optional<SerializingMutator<?>> tryCreate(

AnnotatedType elementType = ((AnnotatedArrayType) type).getAnnotatedGenericComponentType();
AnnotatedType propagatedElementType = propagatePropertyConstraints(type, elementType);
Class<?> propagatedElementClazz = (Class<?>) propagatedElementType.getType();
return Optional.of(propagatedElementType)
.flatMap(factory::tryCreate)
.map(
elementMutator ->
new ArrayMutator<>(elementMutator, propagatedElementClazz, minLength, maxLength));
Type rawType = propagatedElementType.getType();
Copy link
Contributor

@simonresch simonresch Nov 3, 2025

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Is this change relevant to the DictionaryProvider? If not, it could make sense to split it from this PR.

return extractRawClass(rawType)
.flatMap(
propagatedElementClass ->
Optional.of(propagatedElementType)
.flatMap(factory::tryCreate)
.map(
elementMutator ->
new ArrayMutator<>(
elementMutator, propagatedElementClass, minLength, maxLength)));
}

enum CrossOverAction {
Expand Down
20 changes: 20 additions & 0 deletions src/main/java/com/code_intelligence/jazzer/mutation/support/TypeSupport.java
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -37,9 +37,12 @@
import java.lang.reflect.AnnotatedTypeVariable;
import java.lang.reflect.AnnotatedWildcardType;
import java.lang.reflect.Array;
import java.lang.reflect.GenericArrayType;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.lang.reflect.TypeVariable;
import java.lang.reflect.WildcardType;
import java.util.ArrayDeque;
import java.util.Arrays;
import java.util.Collections;
Expand Down Expand Up @@ -687,4 +690,21 @@ public static boolean annotatedTypeEquals(AnnotatedType left, AnnotatedType righ
return left.getType().equals(right.getType())
&& Arrays.equals(left.getAnnotations(), right.getAnnotations());
}

public static Optional<Class<?>> extractRawClass(Type type) {
if (type instanceof Class<?>) {
return Optional.of((Class<?>) type);
} else if (type instanceof ParameterizedType) {
return Optional.of((Class<?>) ((ParameterizedType) type).getRawType());
} else if (type instanceof GenericArrayType) {
Type componentType = ((GenericArrayType) type).getGenericComponentType();
Optional<Class<?>> componentClass = extractRawClass(componentType);
return componentClass.map(aClass -> Array.newInstance(aClass, 0).getClass());
} else if (type instanceof TypeVariable<?> || type instanceof WildcardType) {
// Default fallback — assume Object array
return Optional.of(Object.class);
} else {
return Optional.empty();
}
}
}