How to use

MethodSignatureWriter$Nullness

in

me.seeber.gradle.ide.eclipse.annotations

/**
 * Append an array type signature
 *
 * @param type Array type to append
 * @param nullable Nullness of type
 * @param output Output to append to
 * @param <A> Type of output
 * @return Supplied output to append to
 */
public <A extends Appendable> A appendArrayTypeSignature(Generic type, Nullness nullable, A output) {
  try {
    output.append('[').append(nullable.getMarker());
    appendJavaTypeSignature(Validate.notNull(type.getComponentType()), Nullness.UNDEFINED, output);
    return output;
  }
  catch (Exception e) {
    throw new RuntimeException(String.format("Could not write array type %s", type));
  }
}

/**
 * @see me.seeber.gradle.ide.eclipse.annotations.Nullability#getParameterNullability(net.bytebuddy.description.method.ParameterDescription)
 */
@Override
public Nullness getParameterNullability(ParameterDescription parameter) {
  PackageDescription pakkage = parameter.getDeclaringMethod().getDeclaringType().asErasure().getPackage();
  Optional<AnnotationDescription> packageAnnotation = pakkage.getDeclaredAnnotations().stream()
      .filter(a -> a.getAnnotationType().getName().equals(this.nonnullParameterDefaultAnnotation)).findAny();
  Nullness defaultNullness = Validate
      .notNull(packageAnnotation.map(a -> Nullness.NONNULL).orElse(Nullness.UNDEFINED));
  Nullness nullability = getNullability(parameter.getDeclaredAnnotations());
  return defaultNullness.override(nullability);
}

/**
 * @see me.seeber.gradle.ide.eclipse.annotations.Nullability#getReturnValueNullability(MethodDescription)
 */
@Override
public Nullness getReturnValueNullability(MethodDescription method) {
  Nullness nullability = Nullness.UNDEFINED;
  for (Nullability provider : this.nullabilities) {
    Nullness override = provider.getReturnValueNullability(method);
    nullability = nullability.override(override);
  }
  return nullability;
}

/**
 * @see me.seeber.gradle.ide.eclipse.annotations.Nullability#getReturnValueNullability(MethodDescription)
 */
@Override
public Nullness getReturnValueNullability(MethodDescription method) {
  Nullness nullability = Nullness.UNDEFINED;
  for (Nullability provider : this.nullabilities) {
    Nullness override = provider.getReturnValueNullability(method);
    nullability = nullability.override(override);
  }
  return nullability;
}

/**
 * @see me.seeber.gradle.ide.eclipse.annotations.Nullability#getParameterNullability(net.bytebuddy.description.method.ParameterDescription)
 */
@Override
public Nullness getParameterNullability(ParameterDescription parameter) {
  Nullness nullability = Nullness.UNDEFINED;
  for (Nullability provider : this.nullabilities) {
    Nullness override = provider.getParameterNullability(parameter);
    nullability = nullability.override(override);
  }
  return nullability;
}

/**
 * @see me.seeber.gradle.ide.eclipse.annotations.Nullability#getParameterNullability(net.bytebuddy.description.method.ParameterDescription)
 */
@Override
public Nullness getParameterNullability(ParameterDescription parameter) {
  PackageDescription pakkage = parameter.getDeclaringMethod().getDeclaringType().asErasure().getPackage();
  Optional<AnnotationDescription> packageAnnotation = pakkage.getDeclaredAnnotations().stream()
      .filter(a -> a.getAnnotationType().getName().equals(this.nonnullParameterDefaultAnnotation)).findAny();
  Nullness defaultNullness = Validate
      .notNull(packageAnnotation.map(a -> Nullness.NONNULL).orElse(Nullness.UNDEFINED));
  Nullness nullability = getNullability(parameter.getDeclaredAnnotations());
  return defaultNullness.override(nullability);
}

/**
 * @see me.seeber.gradle.ide.eclipse.annotations.Nullability#getParameterNullability(net.bytebuddy.description.method.ParameterDescription)
 */
@Override
public Nullness getParameterNullability(ParameterDescription parameter) {
  Nullness nullability = Nullness.UNDEFINED;
  for (Nullability provider : this.nullabilities) {
    Nullness override = provider.getParameterNullability(parameter);
    nullability = nullability.override(override);
  }
  return nullability;
}

/**
 * Append a type variable signature
 *
 * @param typeVariable Type variable to append signature
 * @param nullable Nullness of type variable
 * @param output Output to append to
 * @param <A> Type of output
 * @return Supplied output to append to
 */
public <A extends Appendable> A appendTypeVariableSignature(Generic typeVariable, Nullness nullable, A output) {
  try {
    output.append('T').append(nullable.getMarker()).append(typeVariable.getTypeName()).append(';');
    return output;
  }
  catch (Exception e) {
    throw new RuntimeException(String.format("Could not type variable %s", typeVariable));
  }
}

/**
 * Append an array type signature
 *
 * @param type Array type to append
 * @param nullable Nullness of type
 * @param output Output to append to
 * @param <A> Type of output
 * @return Supplied output to append to
 */
public <A extends Appendable> A appendArrayTypeSignature(Generic type, Nullness nullable, A output) {
  try {
    output.append('[').append(nullable.getMarker());
    appendJavaTypeSignature(Validate.notNull(type.getComponentType()), Nullness.UNDEFINED, output);
    return output;
  }
  catch (Exception e) {
    throw new RuntimeException(String.format("Could not write array type %s", type));
  }
}

output.append('L').append(nullable.getMarker());

output.append('L').append(nullable.getMarker());

/**
 * Append a type variable signature
 *
 * @param typeVariable Type variable to append signature
 * @param nullable Nullness of type variable
 * @param output Output to append to
 * @param <A> Type of output
 * @return Supplied output to append to
 */
public <A extends Appendable> A appendTypeVariableSignature(Generic typeVariable, Nullness nullable, A output) {
  try {
    output.append('T').append(nullable.getMarker()).append(typeVariable.getTypeName()).append(';');
    return output;
  }
  catch (Exception e) {
    throw new RuntimeException(String.format("Could not type variable %s", typeVariable));
  }
}