Interface MethodTypeDesc

Method Details

• ofDescriptor

  static MethodTypeDesc ofDescriptor(String descriptor)

  Creates a MethodTypeDesc given a method descriptor string.

  Parameters:

  descriptor - a method descriptor string

  Returns:

  a MethodTypeDesc describing the desired method type

  Throws:

  NullPointerException - if the argument is null

  IllegalArgumentException - if the descriptor string is not a valid method descriptor

  See Java Virtual Machine Specification:

  4.3.3 Method Descriptors
  

• of

  static MethodTypeDesc of(ClassDesc returnDesc, ClassDesc... paramDescs)

  Returns a MethodTypeDesc given the return type and parameter types.

  Parameters:

  returnDesc - a ClassDesc describing the return type

  paramDescs - ClassDescs describing the argument types

  Returns:

  a MethodTypeDesc describing the desired method type

  Throws:

  NullPointerException - if any argument or its contents are null

  IllegalArgumentException - if any element of paramDescs is a ClassDesc for void

• returnType

  ClassDesc returnType()

  Gets the return type of the method type described by this MethodTypeDesc.

  Specified by:

  returnType in interface TypeDescriptor.OfMethod<ClassDesc,MethodTypeDesc>

  Returns:

  a ClassDesc describing the return type of the method type

• parameterCount

  int parameterCount()

  Returns the number of parameters of the method type described by this MethodTypeDesc.

  Specified by:

  parameterCount in interface TypeDescriptor.OfMethod<ClassDesc,MethodTypeDesc>

  Returns:

  the number of parameters

• parameterType

  ClassDesc parameterType(int index)

  Returns the parameter type of the index'th parameter of the method type described by this MethodTypeDesc.

  Specified by:

  parameterType in interface TypeDescriptor.OfMethod<ClassDesc,MethodTypeDesc>

  Parameters:

  index - the index of the parameter to retrieve

  Returns:

  a ClassDesc describing the desired parameter type

  Throws:

  IndexOutOfBoundsException - if the index is outside the half-open range [0, parameterCount())

• parameterList

  List<ClassDesc> parameterList()

  Returns the parameter types as an immutable List.

  Specified by:

  parameterList in interface TypeDescriptor.OfMethod<ClassDesc,MethodTypeDesc>

  Returns:

  a List of ClassDesc describing the parameter types

• parameterArray

  ClassDesc[] parameterArray()

  Returns the parameter types as an array.

  Specified by:

  parameterArray in interface TypeDescriptor.OfMethod<ClassDesc,MethodTypeDesc>

  Returns:

  an array of ClassDesc describing the parameter types

• changeReturnType

  MethodTypeDesc changeReturnType(ClassDesc returnType)

  Returns a MethodTypeDesc that is identical to this one, except with the specified return type.

  Specified by:

  changeReturnType in interface TypeDescriptor.OfMethod<ClassDesc,MethodTypeDesc>

  Parameters:

  returnType - a ClassDesc describing the new return type

  Returns:

  a MethodTypeDesc describing the desired method type

  Throws:

  NullPointerException - if the argument is null

• changeParameterType

  MethodTypeDesc changeParameterType(int index, ClassDesc paramType)

  Returns a MethodTypeDesc that is identical to this one, except that a single parameter type has been changed to the specified type.

  Specified by:

  changeParameterType in interface TypeDescriptor.OfMethod<ClassDesc,MethodTypeDesc>

  Parameters:

  index - the index of the parameter to change

  paramType - a ClassDesc describing the new parameter type

  Returns:

  a MethodTypeDesc describing the desired method type

  Throws:

  NullPointerException - if any argument is null

  IndexOutOfBoundsException - if the index is outside the half-open range [0, parameterCount)

• dropParameterTypes

  MethodTypeDesc dropParameterTypes(int start, int end)

  Returns a MethodTypeDesc that is identical to this one, except that a range of parameter types have been removed.

  Specified by:

  dropParameterTypes in interface TypeDescriptor.OfMethod<ClassDesc,MethodTypeDesc>

  Parameters:

  start - the index of the first parameter to remove

  end - the index after the last parameter to remove

  Returns:

  a MethodTypeDesc describing the desired method type

  Throws:

  IndexOutOfBoundsException - if start is outside the half-open range [0, parameterCount), or end is outside the closed range [0, parameterCount], or if start > end

• insertParameterTypes

  MethodTypeDesc insertParameterTypes(int pos, ClassDesc... paramTypes)

  Returns a MethodTypeDesc that is identical to this one, except that a range of additional parameter types have been inserted.

  Specified by:

  insertParameterTypes in interface TypeDescriptor.OfMethod<ClassDesc,MethodTypeDesc>

  Parameters:

  pos - the index at which to insert the first inserted parameter

  paramTypes - ClassDescs describing the new parameter types to insert

  Returns:

  a MethodTypeDesc describing the desired method type

  Throws:

  NullPointerException - if any argument or its contents are null

  IndexOutOfBoundsException - if pos is outside the closed range [0, parameterCount]

  IllegalArgumentException - if any element of paramTypes is a ClassDesc for void

• descriptorString

  default String descriptorString()

  Returns the method type descriptor string.

  Specified by:

  descriptorString in interface TypeDescriptor

  Returns:

  the method type descriptor string

  See Java Virtual Machine Specification:

  4.3.3 Method Descriptors
  

• displayDescriptor

  default String displayDescriptor()

  Returns a human-readable descriptor for this method type, using the canonical names for parameter and return types.

  Returns:

  the human-readable descriptor for this method type

• equals

  boolean equals(Object o)

  Compares the specified object with this descriptor for equality. Returns true if and only if the specified object is also a MethodTypeDesc both have the same arity, their return types are equal, and each pair of corresponding parameter types are equal.

  Overrides:

  equals in class Object

  Parameters:

  o - the other object

  Returns:

  whether this descriptor is equal to the other object

  See Also:

  • Object.hashCode()
  • HashMap