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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 Method descriptors conforming to JVMS 4.3.3 can be described nominally via MethodType::describeConstable; otherwise they cannot be described nominally.
See Java Virtual Machine Specification:
4.3.2 Field Descriptors
4.3.3 Method Descriptors
Since:
12

Nested Class Summary

Nested classes/interfaces declared in interface java.lang.invoke.TypeDescriptor

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

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

Methods declared in interface java.lang.invoke.TypeDescriptor

descriptorString

Method Details

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]}

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Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
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https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/lang/invoke/TypeDescriptor.OfMethod.html