How to use

Prototype

in

com.android.dx.rop.type

Prototype prototype(boolean includeThis) {
  return Prototype.intern(descriptor(includeThis));
}

private void checkPrototype(Prototype proto) {
 checkDescriptor(proto.getReturnType().getDescriptor());
 StdTypeList args = proto.getParameterTypes();
 for (int i = 0; i < args.size(); i++) {
   checkDescriptor(args.get(i).getDescriptor());
 }
}
private void checkDescriptor(String typeDescriptor) {

Type[] params = makeParameterArray(descriptor);
int paramCount = 0;
int at = 1;
result = new Prototype(descriptor, returnType, parameterTypes);
return putIntern(result);

/**
 * Interns an instance, adding to the descriptor as necessary based
 * on the given definer, name, and flags. For example, an init
 * method has an uninitialized object of type {@code definer}
 * as its first argument.
 *
 * @param descriptor {@code non-null;} the descriptor string
 * @param definer {@code non-null;} class the method is defined on
 * @param isStatic whether this is a static method
 * @param isInit whether this is an init method
 * @return {@code non-null;} the interned instance
 */
public static Prototype intern(String descriptor, Type definer,
    boolean isStatic, boolean isInit) {
  Prototype base = intern(descriptor);
  if (isStatic) {
    return base;
  }
  if (isInit) {
    definer = definer.asUninitialized(Integer.MAX_VALUE);
  }
  return base.withFirstParameter(definer);
}

/**
 * Returns a new interned instance, which is the same as this instance,
 * except that it has an additional parameter prepended to the original's
 * argument list.
 *
 * @param param {@code non-null;} the new first parameter
 * @return {@code non-null;} an appropriately-constructed instance
 */
public Prototype withFirstParameter(Type param) {
  String newDesc = "(" + param.getDescriptor() + descriptor.substring(1);
  StdTypeList newParams = parameterTypes.withFirst(param);
  newParams.setImmutable();
  Prototype result =
    new Prototype(newDesc, returnType, newParams);
  return putIntern(result);
}

/**
 * Gets the register that begins the method's parameter range (including
 * the 'this' parameter for non-static methods). The range continues until
 * {@code regSize}
 *
 * @return register as noted above.
 */
private int getParamBase() {
  return regSize
      - desc.getParameterTypes().getWordCount() - (isStatic? 0 : 1);
}

/**
 * {@inheritDoc}
 *
 * In this case, this method returns the <i>return type</i> of this method.
 *
 * @return {@code non-null;} the method's return type
 */
@Override
public final Type getType() {
  return prototype.getReturnType();
}

/** {@inheritDoc} */
@Override
public String toHuman() {
  return prototype.getDescriptor();
}

/**
 * Returns the appropriate {@code invoke-static} rop for the
 * given type. The result is typically a newly-allocated instance.
 *
 * @param meth {@code non-null;} descriptor of the method
 * @return {@code non-null;} an appropriate instance
 */
public static Rop opInvokeStatic(Prototype meth) {
  return new Rop(RegOps.INVOKE_STATIC,
          meth.getParameterFrameTypes(),
          StdTypeList.THROWABLE);
}

/** {@inheritDoc} */
@Override
protected int compareTo0(Constant other) {
  CstProtoRef otherCstProtoRef = (CstProtoRef) other;
  return prototype.compareTo(otherCstProtoRef.getPrototype());
}

Type[] params = makeParameterArray(descriptor);
int paramCount = 0;
int at = 1;
return new Prototype(descriptor, returnType, parameterTypes);

/**
 * Gets the prototype of this method as either a
 * {@code static} or instance method. In the case of a
 * {@code static} method, this is the same as the raw
 * prototype. In the case of an instance method, this has an
 * appropriately-typed {@code this} argument as the first
 * one.
 *
 * @param isStatic whether the method should be considered static
 * @return {@code non-null;} the method prototype
 */
public final Prototype getPrototype(boolean isStatic) {
  if (isStatic) {
    return prototype;
  } else {
    if (instancePrototype == null) {
      Type thisType = getDefiningClass().getClassType();
      instancePrototype = prototype.withFirstParameter(thisType);
    }
    return instancePrototype;
  }
}

/**
 * Returns the unique instance corresponding to the
 * given method descriptor. See vmspec-2 sec4.3.3 for details on the
 * field descriptor syntax.
 *
 * @param descriptor {@code non-null;} the descriptor
 * @return {@code non-null;} the corresponding instance
 * @throws IllegalArgumentException thrown if the descriptor has
 * invalid syntax
 */
public static Prototype intern(String descriptor) {
  if (descriptor == null) {
    throw new NullPointerException("descriptor == null");
  }
  Prototype result = internTable.get(descriptor);
  if (result != null) {
    return result;
  }
  result = fromDescriptor(descriptor);
  return putIntern(result);
}

Type[] params = makeParameterArray(descriptor);
int paramCount = 0;
int at = 1;
result = new Prototype(descriptor, returnType, parameterTypes);
return putIntern(result);

/**
 * Interns an instance, adding to the descriptor as necessary based
 * on the given definer, name, and flags. For example, an init
 * method has an uninitialized object of type {@code definer}
 * as its first argument.
 *
 * @param descriptor {@code non-null;} the descriptor string
 * @param definer {@code non-null;} class the method is defined on
 * @param isStatic whether this is a static method
 * @param isInit whether this is an init method
 * @return {@code non-null;} the interned instance
 */
public static Prototype intern(String descriptor, Type definer,
    boolean isStatic, boolean isInit) {
  Prototype base = intern(descriptor);
  if (isStatic) {
    return base;
  }
  if (isInit) {
    definer = definer.asUninitialized(Integer.MAX_VALUE);
  }
  return base.withFirstParameter(definer);
}

/**
 * Returns a new interned instance, which is the same as this instance,
 * except that it has an additional parameter prepended to the original's
 * argument list.
 *
 * @param param {@code non-null;} the new first parameter
 * @return {@code non-null;} an appropriately-constructed instance
 */
public Prototype withFirstParameter(Type param) {
  String newDesc = "(" + param.getDescriptor() + descriptor.substring(1);
  StdTypeList newParams = parameterTypes.withFirst(param);
  newParams.setImmutable();
  Prototype result =
    new Prototype(newDesc, returnType, newParams);
  return putIntern(result);
}

/**
 * Gets the register that begins the method's parameter range (including
 * the 'this' parameter for non-static methods). The range continues until
 * {@code regSize}
 *
 * @return register as noted above
 */
private int getParamBase() {
  return regSize
      - desc.getParameterTypes().getWordCount() - (isStatic? 0 : 1);
}

/**
 * Gets the return type.
 *
 * @return {@code non-null;} the return type
 */
public Type getReturnType() {
  return prototype.getReturnType();
}

/** {@inheritDoc} */
@Override
public String toHuman() {
  return prototype.getDescriptor();
}

/**
 * Returns the appropriate {@code invoke-static} rop for the
 * given type. The result is typically a newly-allocated instance.
 *
 * @param meth {@code non-null;} descriptor of the method
 * @return {@code non-null;} an appropriate instance
 */
public static Rop opInvokeStatic(Prototype meth) {
  return new Rop(RegOps.INVOKE_STATIC,
          meth.getParameterFrameTypes(),
          StdTypeList.THROWABLE);
}