package org.checkerframework.framework.util.typeinference.constraint;

import org.checkerframework.framework.type.AnnotatedTypeMirror;
import org.checkerframework.framework.type.AnnotatedTypeMirror.AnnotatedTypeVariable;

/**
 * A constraint of the form: {@code T <: U}
 *
 * @see org.checkerframework.framework.util.typeinference.constraint.TUConstraint
 */
public class TSubU extends TUConstraint {
  public TSubU(AnnotatedTypeVariable typeVariable, AnnotatedTypeMirror relatedType) {
    this(typeVariable, relatedType, false);
  }

  /** Create a constraint with a variable less than a type. */
  public TSubU(
      AnnotatedTypeVariable typeVariable, AnnotatedTypeMirror relatedType, boolean uIsArg) {
    super(typeVariable, relatedType, uIsArg);
  }

  @Override
  public String toString() {
    return "TSubU( " + typeVariable + " <: " + relatedType + " )";
  }
}