All Superinterfaces:

ConstantDesc, TypeDescriptor, TypeDescriptor.OfMethod<ClassDesc,​MethodTypeDesc>

public interface MethodTypeDesc
extends ConstantDesc, TypeDescriptor.OfMethod<ClassDesc,​MethodTypeDesc>

API Note:

In the future, if the Java language permits, MethodTypeDesc may become a sealed interface, which would prohibit subclassing except by explicitly permitted types. Non-platform classes should not implement MethodTypeDesc directly.

Since:

12

• Nested Class Summary

• Method Summary

• Method Details

  • ofDescriptor

    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

    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

    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

    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

    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

    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

    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

    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

    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

    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