Module java.base
Package java.lang.invoke

Interface TypeDescriptor.OfMethod<F extends TypeDescriptor.OfField<F>,​M extends TypeDescriptor.OfMethod<F,​M>>

  • Type Parameters:
    F - the type representing field type descriptors
    M - the class implementing TypeDescriptor.OfMethod
    All Superinterfaces:
    TypeDescriptor
    All Known Subinterfaces:
    MethodTypeDesc
    All Known Implementing Classes:
    MethodType
    Enclosing interface:
    TypeDescriptor
    public static interface TypeDescriptor.OfMethod<F extends TypeDescriptor.OfField<F>,​M extends TypeDescriptor.OfMethod<F,​M>>
extends TypeDescriptor
    An entity that has a method type descriptor
    Since:
    12
    See The Java™ Virtual Machine Specification:
    4.3.2 Field Descriptors, 4.3.3 Method Descriptors

    • Method Summary

      Modifier and Type Method Description
      M changeParameterType​(int index, F paramType)
      Return a method descriptor that is identical to this one, except that a single parameter type has been changed to the specified type.
      M changeReturnType​(F newReturn)
      Return a method descriptor that is identical to this one, except that the return type has been changed to the specified type
      M dropParameterTypes​(int start, int end)
      Return a method descriptor that is identical to this one, except that a range of parameter types have been removed.
      M insertParameterTypes​(int pos, F... paramTypes)
      Return a method descriptor that is identical to this one, except that a range of additional parameter types have been inserted.
      F[] parameterArray()
      Return an array of field descriptors for the parameter types of the method type described by this descriptor
      int parameterCount()
      Return the number of parameters in the method type
      List<F> parameterList()
      Return an immutable list of field descriptors for the parameter types of the method type described by this descriptor
      F parameterType​(int i)
      Return a field descriptor describing the requested parameter of the method type described by this descriptor
      F returnType()
      Return a field descriptor describing the return type of the method type described by this descriptor

    • Method Detail

      • parameterCount

        int parameterCount()
        Return the number of parameters in the method type
        Returns:
        the number of parameters

      • parameterType

        F parameterType​(int i)
        Return a field descriptor describing the requested parameter of the method type described by this descriptor
        Parameters:
        i - the index of the parameter
        Returns:
        a field descriptor for the requested parameter type
        Throws:
        IndexOutOfBoundsException - if the index is outside the half-open range {[0, parameterCount)}

      • returnType

        F returnType()
        Return a field descriptor describing the return type of the method type described by this descriptor
        Returns:
        a field descriptor for the return type

      • parameterArray

        F[] parameterArray()
        Return an array of field descriptors for the parameter types of the method type described by this descriptor
        Returns:
        field descriptors for the parameter types

      • parameterList

        List<F> parameterList()
        Return an immutable list of field descriptors for the parameter types of the method type described by this descriptor
        Returns:
        field descriptors for the parameter types

      • changeReturnType

        M changeReturnType​(F newReturn)
        Return a method descriptor that is identical to this one, except that the return type has been changed to the specified type
        Parameters:
        newReturn - a field descriptor for the new return type
        Returns:
        the new method descriptor
        Throws:
        NullPointerException - if any argument is null

      • changeParameterType

        M changeParameterType​(int index,
                      F paramType)
        Return a method descriptor that is identical to this one, except that a single parameter type has been changed to the specified type.
        Parameters:
        index - the index of the parameter to change
        paramType - a field descriptor describing the new parameter type
        Returns:
        the new method descriptor
        Throws:
        NullPointerException - if any argument is null
        IndexOutOfBoundsException - if the index is outside the half-open range {[0, parameterCount)}

      • dropParameterTypes

        M dropParameterTypes​(int start,
                     int end)
        Return a method descriptor that is identical to this one, except that a range of parameter types have been removed.
        Parameters:
        start - the index of the first parameter to remove
        end - the index after the last parameter to remove
        Returns:
        the new method descriptor
        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

        M insertParameterTypes​(int pos,
                       F... paramTypes)
        Return a method descriptor that is identical to this one, except that a range of additional parameter types have been inserted.
        Parameters:
        pos - the index at which to insert the first inserted parameter
        paramTypes - field descriptors describing the new parameter types to insert
        Returns:
        the new method descriptor
        Throws:
        NullPointerException - if any argument is null
        IndexOutOfBoundsException - if pos is outside the closed range {[0, parameterCount]}