com.sun.jna

Class VarArgsChecker

java.lang.Object

com.sun.jna.VarArgsChecker

abstract class VarArgsChecker
extends Object

Class for checking if a method has vararg parameters. Use method create() to create an instance of this class. How the returned instance work depends on the capabilities of the underlying JVM implementation. On older versions of the VM not supporting varargs, the returned VarArgsChecker will always return false on calls to isVarArgs(Method).

Author:

Max Bureck

Method Summary

Modifier and Type	Method and Description
(package private) static VarArgsChecker	create() Creates a new instance of a concrete subclass of VarArgsChecker, depending if Method.isVarArgs() exists.
(package private) abstract int	fixedArgs(Method m) If variadic, returns the number of fixed arguments to the method.
(package private) abstract boolean	isVarArgs(Method m) Checks if the given method was declared to take a variable number of arguments.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

create

static VarArgsChecker create()

Creates a new instance of a concrete subclass of VarArgsChecker, depending if Method.isVarArgs() exists.

Returns:

new instance of concrete VarArgsChecker subclass

isVarArgs

abstract boolean isVarArgs(Method m)

Checks if the given method was declared to take a variable number of arguments.

Parameters:

m - Method to be checked

Returns:

true if the given method takes a variable number of arguments, false otherwise.

fixedArgs

abstract int fixedArgs(Method m)

If variadic, returns the number of fixed arguments to the method.

Parameters:

m - Method to be checked

Returns:

Number of fixed arguments if the given method takes a variable number of arguments, zero otherwise.