OpenJDK 27 · jdk.internal.constant.MethodTypeDescImpl

Modifier and Type	Field and Description
private final ClassDesc[]	argTypes
private String	cachedDescriptorString
private final ClassDesc	returnType

Access	Constructor and Description
private	MethodTypeDescImpl(ClassDesc a `ClassDesc` describing the return type returnType, ClassDesc[] `ClassDesc`s describing the trusted and validated parameter types validatedArgTypes) Constructs a MethodTypeDesc with the specified return type and a trusted and already-validated parameter types array.

Method Summary

Modifier and Type	Method and Description
private String	buildDescriptorString()
private static ClassDesc[]	buildParamTypes(String descriptor, int cur, int end, List<ClassDesc> list)
public MethodTypeDesc	changeParameterType(int index, ClassDesc paramType) Implements java.lang.constant.MethodTypeDesc.changeParameterType. Returns a MethodTypeDesc that is identical to this one, except that a single parameter type has been changed to the specified type.
public MethodTypeDesc	changeReturnType(ClassDesc returnType) Implements java.lang.constant.MethodTypeDesc.changeReturnType. Returns a MethodTypeDesc that is identical to this one, except with the specified return type.
public String	descriptorString() Implements java.lang.constant.MethodTypeDesc.descriptorString. Returns the method type descriptor string.
public MethodTypeDesc	dropParameterTypes(int start, int end) Implements java.lang.constant.MethodTypeDesc.dropParameterTypes. Returns a MethodTypeDesc that is identical to this one, except that a range of parameter types have been removed.
public boolean	Returns: `true` if the specified `MethodTypeDescImpl` is equal to this `MethodTypeDescImpl`. equals(Object the `MethodTypeDescImpl` to compare to this `MethodTypeDescImpl` o) Overrides java.lang.Object.equals. Implements java.lang.constant.MethodTypeDesc.equals. Returns `true` if this MethodTypeDescImpl is equal to another MethodTypeDescImpl.
public int	hashCode() Overrides java.lang.Object.hashCode. Returns a hash code value for this object.
public MethodTypeDesc	insertParameterTypes(int pos, ClassDesc... paramTypes) Implements java.lang.constant.MethodTypeDesc.insertParameterTypes. Returns a MethodTypeDesc that is identical to this one, except that a range of additional parameter types have been inserted.
public static MethodTypeDescImpl	Returns: a MethodTypeDescImpl describing the desired method type ofDescriptor(String the method descriptor string descriptor) Hides java.lang.constant.MethodTypeDesc.ofDescriptor. Creates a MethodTypeDescImpl given a method descriptor string.
public static MethodTypeDescImpl	ofTrusted(ClassDesc a `ClassDesc` describing the return type returnType, ClassDesc[] `ClassDesc`s describing the trusted parameter types trustedArgTypes) Constructs a MethodTypeDesc with the specified return type and a trusted parameter types array, which will be validated.
public static MethodTypeDescImpl	ofValidated(ClassDesc a `ClassDesc` describing the return type returnType, ClassDesc... `ClassDesc`s describing the trusted parameter types trustedArgTypes) Constructs a MethodTypeDesc with the specified pre-validated return type and a pre-validated trusted parameter types array.
public ClassDesc[]	parameterArray() Implements java.lang.constant.MethodTypeDesc.parameterArray. Returns the parameter types as an array.
public int	parameterCount() Implements java.lang.constant.MethodTypeDesc.parameterCount. Returns the number of parameters of the method type described by this MethodTypeDesc.
public List<ClassDesc>	parameterList() Implements java.lang.constant.MethodTypeDesc.parameterList. Returns the parameter types as an immutable `List`.
public ClassDesc	parameterType(int index) Implements java.lang.constant.MethodTypeDesc.parameterType. Returns the parameter type of the `index`'th parameter of the method type described by this MethodTypeDesc.
private static ClassDesc[]	paramTypes(String descriptor, int start, int end)
public MethodType	resolveConstantDesc(MethodHandles.Lookup lookup) Implements java.lang.constant.MethodTypeDesc.resolveConstantDesc. Resolves this descriptor reflectively, emulating the resolution behavior of JVMS 5.4.3 and the access control behavior of JVMS 5.4.4.
public ClassDesc	returnType() Implements java.lang.constant.MethodTypeDesc.returnType. Gets the return type of the method type described by this MethodTypeDesc.
public String	toString() Overrides java.lang.Object.toString. Returns a string representation of the object.
private static ClassDesc	validateArgument(ClassDesc arg)

Inherited from java.lang.Object:: clone finalize getClass notify notifyAll wait wait wait

argTypes	back to summary
private final ClassDesc[] argTypes Annotations @Stable

cachedDescriptorString	back to summary
private String cachedDescriptorString Annotations @Stable

returnType	back to summary
private final ClassDesc returnType

MethodTypeDescImpl	back to summary
private MethodTypeDescImpl(ClassDesc returnType, ClassDesc[] validatedArgTypes) Constructs a MethodTypeDesc with the specified return type and a trusted and already-validated parameter types array. Parameters returnType:ClassDesc a `ClassDesc` describing the return type validatedArgTypes:ClassDesc[] `ClassDesc`s describing the trusted and validated parameter types

Method Detail

buildDescriptorString	back to summary
private String buildDescriptorString()

buildParamTypes	back to summary
private static ClassDesc[] buildParamTypes(String descriptor, int cur, int end, List<ClassDesc> list)

changeParameterType	back to summary
public MethodTypeDesc changeParameterType(int index, ClassDesc paramType) Implements java.lang.constant.MethodTypeDesc.changeParameterType. Doc from java.lang.constant.MethodTypeDesc.changeParameterType. Returns a MethodTypeDesc that is identical to this one, except that a single parameter type has been changed to the specified type. Annotations @Override

changeParameterType

back to summary

public MethodTypeDesc changeParameterType(int index, ClassDesc paramType)

Implements java.lang.constant.MethodTypeDesc.changeParameterType.

Doc from java.lang.constant.MethodTypeDesc.changeParameterType.

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

Annotations

@Override

changeReturnType	back to summary
public MethodTypeDesc changeReturnType(ClassDesc returnType) Implements java.lang.constant.MethodTypeDesc.changeReturnType. Doc from java.lang.constant.MethodTypeDesc.changeReturnType. Returns a MethodTypeDesc that is identical to this one, except with the specified return type. Annotations @Override

changeReturnType

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public MethodTypeDesc changeReturnType(ClassDesc returnType)

Implements java.lang.constant.MethodTypeDesc.changeReturnType.

Doc from java.lang.constant.MethodTypeDesc.changeReturnType.

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

Annotations

@Override

descriptorString	back to summary
public String descriptorString() Implements java.lang.constant.MethodTypeDesc.descriptorString. Doc from java.lang.constant.MethodTypeDesc.descriptorString. Returns the method type descriptor string. Annotations @Override

descriptorString

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public String descriptorString()

Implements java.lang.constant.MethodTypeDesc.descriptorString.

Doc from java.lang.constant.MethodTypeDesc.descriptorString.

Returns the method type descriptor string.

Annotations

@Override

dropParameterTypes	back to summary
public MethodTypeDesc dropParameterTypes(int start, int end) Implements java.lang.constant.MethodTypeDesc.dropParameterTypes. Doc from java.lang.constant.MethodTypeDesc.dropParameterTypes. Returns a MethodTypeDesc that is identical to this one, except that a range of parameter types have been removed. Annotations @Override

dropParameterTypes

back to summary

public MethodTypeDesc dropParameterTypes(int start, int end)

Implements java.lang.constant.MethodTypeDesc.dropParameterTypes.

Doc from java.lang.constant.MethodTypeDesc.dropParameterTypes.

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

Annotations

@Override

equals back to summary

equals	back to summary
public boolean equals(Object o) Overrides java.lang.Object.equals. Implements java.lang.constant.MethodTypeDesc.equals. Returns `true` if this MethodTypeDescImpl is equal to another MethodTypeDescImpl. Equality is determined by the two descriptors having equal return types and argument types. Parameters o:Object the `MethodTypeDescImpl` to compare to this `MethodTypeDescImpl` Returns:boolean `true` if the specified `MethodTypeDescImpl` is equal to this `MethodTypeDescImpl`. Annotations @Override

public boolean equals(Object o)

Overrides java.lang.Object.equals.

Implements java.lang.constant.MethodTypeDesc.equals.

Returns true if this MethodTypeDescImpl is equal to another MethodTypeDescImpl. Equality is determined by the two descriptors having equal return types and argument types.

Parameters

o:Object: the MethodTypeDescImpl to compare to this MethodTypeDescImpl

Returns:boolean

true if the specified MethodTypeDescImpl is equal to this MethodTypeDescImpl.

Annotations

@Override

hashCode back to summary

hashCode	back to summary
public int hashCode() Overrides java.lang.Object.hashCode. Doc from java.lang.Object.hashCode. Returns a hash code value for this object. This method is supported for the benefit of hash tables such as those provided by `java.util.HashMap`. The general contract of `hashCode` is: Whenever it is invoked on the same object more than once during an execution of a Java application, the `hashCode` method must consistently return the same integer, provided no information used in `equals` comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application. If two objects are equal according to the `equals` method, then calling the `hashCode` method on each of the two objects must produce the same integer result. It is not required that if two objects are unequal according to the `equals` method, then calling the `hashCode` method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables. Annotations @Override

public int hashCode()

Overrides java.lang.Object.hashCode.

Doc from java.lang.Object.hashCode.

Returns a hash code value for this object. This method is supported for the benefit of hash tables such as those provided by java.util.HashMap.

The general contract of hashCode is:

Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
If two objects are equal according to the equals method, then calling the hashCode method on each of the two objects must produce the same integer result.
It is not required that if two objects are unequal according to the equals method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.

Annotations

@Override

insertParameterTypes	back to summary
public MethodTypeDesc insertParameterTypes(int pos, ClassDesc... paramTypes) Implements java.lang.constant.MethodTypeDesc.insertParameterTypes. Doc from java.lang.constant.MethodTypeDesc.insertParameterTypes. Returns a MethodTypeDesc that is identical to this one, except that a range of additional parameter types have been inserted. Annotations @Override

insertParameterTypes

back to summary

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

Implements java.lang.constant.MethodTypeDesc.insertParameterTypes.

Doc from java.lang.constant.MethodTypeDesc.insertParameterTypes.

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

Annotations

@Override

ofDescriptor	back to summary
public static MethodTypeDescImpl ofDescriptor(String descriptor) Hides java.lang.constant.MethodTypeDesc.ofDescriptor. Creates a MethodTypeDescImpl given a method descriptor string. Parameters descriptor:String the method descriptor string Returns:MethodTypeDescImpl a MethodTypeDescImpl describing the desired method type Exceptions IllegalArgumentException: if the descriptor string is not a valid method descriptor Java Virtual Machine Specification 4.3.3 Method Descriptors

ofDescriptor

back to summary

public static MethodTypeDescImpl ofDescriptor(String descriptor)

Hides java.lang.constant.MethodTypeDesc.ofDescriptor.

Creates a MethodTypeDescImpl given a method descriptor string.

Parameters

descriptor:String: the method descriptor string

Returns:MethodTypeDescImpl

a MethodTypeDescImpl describing the desired method type

Exceptions

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

Java Virtual Machine Specification

4.3.3 Method Descriptors

ofTrusted back to summary

ofTrusted	back to summary
public static MethodTypeDescImpl ofTrusted(ClassDesc returnType, ClassDesc[] trustedArgTypes) Constructs a MethodTypeDesc with the specified return type and a trusted parameter types array, which will be validated. Parameters returnType:ClassDesc a `ClassDesc` describing the return type trustedArgTypes:ClassDesc[] `ClassDesc`s describing the trusted parameter types

public static MethodTypeDescImpl ofTrusted(ClassDesc returnType, ClassDesc[] trustedArgTypes)

Constructs a MethodTypeDesc with the specified return type and a trusted parameter types array, which will be validated.

Parameters

returnType:ClassDesc: a ClassDesc describing the return type
trustedArgTypes:ClassDesc[]: ClassDescs describing the trusted parameter types

ofValidated back to summary

ofValidated	back to summary
public static MethodTypeDescImpl ofValidated(ClassDesc returnType, ClassDesc... trustedArgTypes) Constructs a MethodTypeDesc with the specified pre-validated return type and a pre-validated trusted parameter types array. Parameters returnType:ClassDesc a `ClassDesc` describing the return type trustedArgTypes:ClassDesc[] `ClassDesc`s describing the trusted parameter types

public static MethodTypeDescImpl ofValidated(ClassDesc returnType, ClassDesc... trustedArgTypes)

Constructs a MethodTypeDesc with the specified pre-validated return type and a pre-validated trusted parameter types array.

Parameters

returnType:ClassDesc: a ClassDesc describing the return type
trustedArgTypes:ClassDesc[]: ClassDescs describing the trusted parameter types

parameterArray	back to summary
public ClassDesc[] parameterArray() Implements java.lang.constant.MethodTypeDesc.parameterArray. Doc from java.lang.constant.MethodTypeDesc.parameterArray. Returns the parameter types as an array. Annotations @Override

parameterArray

back to summary

public ClassDesc[] parameterArray()

Implements java.lang.constant.MethodTypeDesc.parameterArray.

Doc from java.lang.constant.MethodTypeDesc.parameterArray.

Returns the parameter types as an array.

Annotations

@Override

parameterCount	back to summary
public int parameterCount() Implements java.lang.constant.MethodTypeDesc.parameterCount. Doc from java.lang.constant.MethodTypeDesc.parameterCount. Returns the number of parameters of the method type described by this MethodTypeDesc. Annotations @Override

parameterCount

back to summary

public int parameterCount()

Implements java.lang.constant.MethodTypeDesc.parameterCount.

Doc from java.lang.constant.MethodTypeDesc.parameterCount.

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

Annotations

@Override

parameterList back to summary

parameterList	back to summary
public List<ClassDesc> parameterList() Implements java.lang.constant.MethodTypeDesc.parameterList. Doc from java.lang.constant.MethodTypeDesc.parameterList. Returns the parameter types as an immutable `List`. Annotations @Override

public List<ClassDesc> parameterList()

Implements java.lang.constant.MethodTypeDesc.parameterList.

Doc from java.lang.constant.MethodTypeDesc.parameterList.

Returns the parameter types as an immutable List.

Annotations

@Override

parameterType back to summary

parameterType	back to summary
public ClassDesc parameterType(int index) Implements java.lang.constant.MethodTypeDesc.parameterType. Doc from java.lang.constant.MethodTypeDesc.parameterType. Returns the parameter type of the `index`'th parameter of the method type described by this MethodTypeDesc. Annotations @Override

public ClassDesc parameterType(int index)

Implements java.lang.constant.MethodTypeDesc.parameterType.

Doc from java.lang.constant.MethodTypeDesc.parameterType.

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

Annotations

@Override

paramTypes	back to summary
private static ClassDesc[] paramTypes(String descriptor, int start, int end)

resolveConstantDesc back to summary

resolveConstantDesc	back to summary
public MethodType resolveConstantDesc(MethodHandles.Lookup lookup) throws ReflectiveOperationException Implements java.lang.constant.MethodTypeDesc.resolveConstantDesc. Doc from java.lang.constant.MethodTypeDesc.resolveConstantDesc. Resolves this descriptor reflectively, emulating the resolution behavior of JVMS 5.4.3 and the access control behavior of JVMS 5.4.4. The resolution and access control context is provided by the `MethodHandles.Lookup` parameter. No caching of the resulting value is performed. Annotations @Override Exceptions ReflectiveOperationException: Doc from java.lang.constant.ConstantDesc.resolveConstantDesc. if a class, method, or field could not be reflectively resolved in the course of resolution

public MethodType resolveConstantDesc(MethodHandles.Lookup lookup) throws ReflectiveOperationException

Implements java.lang.constant.MethodTypeDesc.resolveConstantDesc.

Doc from java.lang.constant.MethodTypeDesc.resolveConstantDesc.

Resolves this descriptor reflectively, emulating the resolution behavior of JVMS 5.4.3 and the access control behavior of JVMS 5.4.4. The resolution and access control context is provided by the MethodHandles.Lookup parameter. No caching of the resulting value is performed.

Annotations

@Override

Exceptions

ReflectiveOperationException:

Doc from java.lang.constant.ConstantDesc.resolveConstantDesc.

if a class, method, or field could not be reflectively resolved in the course of resolution

returnType	back to summary
public ClassDesc returnType() Implements java.lang.constant.MethodTypeDesc.returnType. Doc from java.lang.constant.MethodTypeDesc.returnType. Gets the return type of the method type described by this MethodTypeDesc. Annotations @Override

returnType

back to summary

public ClassDesc returnType()

Implements java.lang.constant.MethodTypeDesc.returnType.

Doc from java.lang.constant.MethodTypeDesc.returnType.

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

Annotations

@Override

toString back to summary

toString	back to summary
public String toString() Overrides java.lang.Object.toString. Doc from java.lang.Object.toString. Returns a string representation of the object. Satisfying this method's contract implies a non-`null` result must be returned. Annotations @Override

public String toString()

Overrides java.lang.Object.toString.

Doc from java.lang.Object.toString.

Returns a string representation of the object. Satisfying this method's contract implies a non-null result must be returned.

Annotations

@Override

validateArgument	back to summary
private static ClassDesc validateArgument(ClassDesc arg)

public final Class MethodTypeDescImpl

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