sun.tools.util

Class ModifierFilter

java.lang.Object

java.lang.reflect.Modifier

sun.tools.util.ModifierFilter

public class ModifierFilter
extends Modifier

A class whose instances are filters over Modifier bits. Filtering is done by returning boolean values. Classes, methods and fields can be filtered, or filtering can be done directly on modifier bits. WARNING: The contents of this source file are not part of any supported API. Code that depends on them does so at its own risk: they are subject to change or removal without notice.

Author:

Robert Field

See Also:

Modifier

Field Summary

Fields

Modifier and Type	Field and Description
static long	ALL_ACCESS All access modifiers.
static long	PACKAGE Package private access.

Fields inherited from class java.lang.reflect.Modifier

ABSTRACT, FINAL, INTERFACE, NATIVE, PRIVATE, PROTECTED, PUBLIC, STATIC, STRICT, SYNCHRONIZED, TRANSIENT, VOLATILE

Constructor Summary

Constructors

Constructor and Description
ModifierFilter(long oneOf) Constructor - Specify a filter.
ModifierFilter(long oneOf, long must, long cannot) Constructor - Specify a filter.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	checkClass(ClassDefinition cdef) Filter a ClassDefinition.
boolean	checkMember(MemberDefinition field) Filter a MemberDefinition.
boolean	checkModifier(int modifierBits) Filter on modifier bits.

Methods inherited from class java.lang.reflect.Modifier

classModifiers, constructorModifiers, fieldModifiers, interfaceModifiers, isAbstract, isFinal, isInterface, isNative, isPrivate, isProtected, isPublic, isStatic, isStrict, isSynchronized, isTransient, isVolatile, methodModifiers, toString

Methods inherited from class java.lang.Object

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

Field Detail

PACKAGE

public static final long PACKAGE

Package private access. A "pseudo-" modifier bit that can be used in the constructors of this class to specify package private access. This is needed since there is no Modifier.PACKAGE.

See Also:

Constant Field Values

ALL_ACCESS

public static final long ALL_ACCESS

All access modifiers. A short-hand set of modifier bits that can be used in the constructors of this class to specify all access modifiers, Same as PRIVATE | PROTECTED | PUBLIC | PACKAGE.

See Also:

Constant Field Values

Constructor Detail

ModifierFilter

public ModifierFilter(long oneOf)

Constructor - Specify a filter.

Parameters:

oneOf - If zero, everything passes the filter. If non-zero, at least one of the specified bits must be on in the modifier bits to pass the filter.

ModifierFilter

public ModifierFilter(long oneOf,
              long must,
              long cannot)

Constructor - Specify a filter. For example, the filter below will only pass synchronized methods that are private or package private access and are not native or static.

 ModifierFilter(  Modifier.PRIVATE | ModifierFilter.PACKAGE,
                  Modifier.SYNCHRONIZED,
                  Modifier.NATIVE | Modifier.STATIC)
 

Each of the three arguments must either be zero or the or'ed combination of the bits specified in the class Modifier or this class. During filtering, these values are compared against the modifier bits as follows:

Parameters:

oneOf - If zero, ignore this argument. If non-zero, at least one of the bits must be on.

must - All bits specified must be on.

cannot - None of the bits specified can be on.

Method Detail

checkModifier

public boolean checkModifier(int modifierBits)

Filter on modifier bits.

Parameters:

modifierBits - Bits as specified in the Modifier class

Returns:

Whether the modifierBits pass this filter.

checkMember

public boolean checkMember(MemberDefinition field)

Filter a MemberDefinition.

Parameters:

field - A MemberDefinition

Returns:

Whether the modifier of the field passes this filter.

See Also:

sun.tools.MemberDefinition

checkClass

public boolean checkClass(ClassDefinition cdef)

Filter a ClassDefinition.

Parameters:

cdef - A ClassDefinition

Returns:

Whether the modifier of the class passes this filter.

See Also:

sun.tools.ClassDefinition