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dataflow-shaded is a dataflow framework based on the javac compiler. It differs from the org.checkerframework:dataflow artifact in two ways. First, the packages in this artifact have been renamed to org.checkerframework.shaded.*. Second, unlike the dataflow artifact, this artifact contains the dependencies it requires.

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package org.checkerframework.dataflow.expression;

import org.checkerframework.checker.nullness.qual.Nullable;
import org.checkerframework.dataflow.analysis.Store;
import org.checkerframework.javacutil.AnnotationProvider;
import org.checkerframework.javacutil.TypesUtils;

import javax.lang.model.type.TypeMirror;

/** A use of {@code this}. */
public class ThisReference extends JavaExpression {
    /**
     * Create a new ThisReference.
     *
     * @param type the type of the {@code this} reference
     */
    public ThisReference(TypeMirror type) {
        super(type);
    }

    @Override
    public boolean equals(@Nullable Object obj) {
        return obj instanceof ThisReference;
    }

    @Override
    public int hashCode() {
        return 0;
    }

    @Override
    public String toString() {
        return "this";
    }

    @Override
    public boolean containsOfClass(Class clazz) {
        return getClass() == clazz;
    }

    @Override
    public boolean isDeterministic(AnnotationProvider provider) {
        return true;
    }

    @Override
    public boolean isUnassignableByOtherCode() {
        return true;
    }

    @Override
    public boolean isUnmodifiableByOtherCode() {
        return TypesUtils.isImmutableTypeInJdk(type);
    }

    @Override
    public boolean syntacticEquals(JavaExpression je) {
        return je instanceof ThisReference;
    }

    @Override
    public boolean containsSyntacticEqualJavaExpression(JavaExpression other) {
        return this.syntacticEquals(other);
    }

    @Override
    public boolean containsModifiableAliasOf(Store store, JavaExpression other) {
        return false; // 'this' is not modifiable
    }

    @Override
    public  R accept(JavaExpressionVisitor visitor, P p) {
        return visitor.visitThisReference(this, p);
    }
}