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 |
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 |
Return a method descriptor that is identical to this one, except that the return type has been changed to the specified type |
M |
dropParameterTypes |
Return a method descriptor that is identical to this one, except that a range of parameter types have been removed. |
M |
insertParameterTypes |
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 |
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 isnull
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 isnull -
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- ifstartis outside the half-open range[0, parameterCount), orendis outside the closed range[0, parameterCount], or ifstart > 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 isnull -
IndexOutOfBoundsException- ifposis outside the closed range {[0, parameterCount]}
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https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/invoke/TypeDescriptor.OfMethod.html