Package edu.umd.cs.findbugs.classfile

Class DescriptorFactory

java.lang.Object

edu.umd.cs.findbugs.classfile.DescriptorFactory

public class DescriptorFactory
extends java.lang.Object

Factory for creating ClassDescriptors, MethodDescriptors, and FieldDescriptors.

Author:

David Hovemeyer

Method Summary

Modifier and Type	Method	Description
void	canonicalize(FieldDescriptor m)
void	canonicalize(MethodDescriptor m)
static java.lang.String	canonicalizeString(java.lang.String s)	Deprecated. this hack is needless for modern JVM, at least Java8
static void	clearInstance()
static ClassDescriptor	createClassDescriptor(java.lang.Class<?> aClass)
static ClassDescriptor	createClassDescriptor(java.lang.String className)
static ClassDescriptor[]	createClassDescriptor(java.lang.String[] classNames)
static ClassDescriptor	createClassDescriptor(org.apache.bcel.classfile.JavaClass c)
static ClassDescriptor	createClassDescriptorFromDottedClassName(java.lang.String dottedClassName)
static ClassDescriptor	createClassDescriptorFromFieldSignature(java.lang.String signature)	Create a class descriptor from a field signature
static ClassDescriptor	createClassDescriptorFromResourceName(java.lang.String resourceName)	Create a class descriptor from a resource name.
static ClassDescriptor	createClassDescriptorFromSignature(java.lang.String signature)
static ClassDescriptor	createClassOrObjectDescriptorFromSignature(java.lang.String signature)
java.util.Collection<ClassDescriptor>	getAllClassDescriptors()
ClassDescriptor	getClassDescriptor(java.lang.Class<?> actualClass)
ClassDescriptor	getClassDescriptor(java.lang.String className)	Get a ClassDescriptor for a class name in VM (slashed) format.
static ClassDescriptor	getClassDescriptor(org.apache.bcel.generic.ObjectType type)	Get a ClassDescriptor for the class described by given ObjectType object.
ClassDescriptor	getClassDescriptorForDottedClassName(java.lang.String dottedClassName)	Get a ClassDescriptor for a class name in dotted format.
FieldDescriptor	getFieldDescriptor(FieldAnnotation ma)
FieldDescriptor	getFieldDescriptor(java.lang.String className, java.lang.String name, java.lang.String signature, boolean isStatic)	Get a FieldDescriptor.
FieldDescriptor	getFieldDescriptor(java.lang.String className, org.apache.bcel.classfile.Field ma)
MethodDescriptor	getMethodDescriptor(MethodAnnotation ma)
MethodDescriptor	getMethodDescriptor(java.lang.String className, java.lang.String name, java.lang.String signature, boolean isStatic)	Get a MethodDescriptor.
MethodDescriptor	getMethodDescriptor(org.apache.bcel.classfile.JavaClass jClass, org.apache.bcel.classfile.Method method)
static DescriptorFactory	instance()	Get the singleton instance of the DescriptorFactory.
static boolean	isClassResource(java.lang.String resourceName)	Determine whether or not the given resource name refers to a class.
static boolean	isModuleInfo(java.lang.String resourceName)	Determine whether or not the given resource name refers to a module-info class.
void	profile()
void	purge(java.util.Collection<ClassDescriptor> unusable)

Methods inherited from class java.lang.Object

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

Method Detail

canonicalizeString

@Deprecated
public static java.lang.String canonicalizeString(@CheckForNull
                                                  java.lang.String s)

Deprecated.

this hack is needless for modern JVM, at least Java8

This method was designed to canonicalize String to improve performance, but now GC cost is cheaper than calculation cost in application thread so removing this old optimization makes SpotBugs 16% faster.

Returns:

given string instance

instance

public static DescriptorFactory instance()

Get the singleton instance of the DescriptorFactory.

Returns:

the singleton instance of the DescriptorFactory

clearInstance

public static void clearInstance()

getAllClassDescriptors

public java.util.Collection<ClassDescriptor> getAllClassDescriptors()

purge

public void purge(java.util.Collection<ClassDescriptor> unusable)

getClassDescriptor

@Nonnull
public ClassDescriptor getClassDescriptor(java.lang.Class<?> actualClass)

getClassDescriptor

@Nonnull
public ClassDescriptor getClassDescriptor(@SlashedClassName
                                          java.lang.String className)

Get a ClassDescriptor for a class name in VM (slashed) format.

Parameters:

className - a class name in VM (slashed) format

Returns:

ClassDescriptor for that class

getClassDescriptorForDottedClassName

public ClassDescriptor getClassDescriptorForDottedClassName(@DottedClassName
                                                            java.lang.String dottedClassName)

Get a ClassDescriptor for a class name in dotted format.

Parameters:

dottedClassName - a class name in dotted format

Returns:

ClassDescriptor for that class

getMethodDescriptor

public MethodDescriptor getMethodDescriptor(org.apache.bcel.classfile.JavaClass jClass,
                                            org.apache.bcel.classfile.Method method)

getMethodDescriptor

public MethodDescriptor getMethodDescriptor(@SlashedClassName
                                            java.lang.String className,
                                            java.lang.String name,
                                            java.lang.String signature,
                                            boolean isStatic)

Get a MethodDescriptor.

Parameters:

className - name of the class containing the method, in VM format (e.g., "java/lang/String")

name - name of the method

signature - signature of the method

isStatic - true if method is static, false otherwise

Returns:

MethodDescriptor

profile

public void profile()

canonicalize

public void canonicalize(MethodDescriptor m)

canonicalize

public void canonicalize(FieldDescriptor m)

getMethodDescriptor

public MethodDescriptor getMethodDescriptor(MethodAnnotation ma)

getFieldDescriptor

public FieldDescriptor getFieldDescriptor(@SlashedClassName
                                          java.lang.String className,
                                          java.lang.String name,
                                          java.lang.String signature,
                                          boolean isStatic)

Get a FieldDescriptor.

Parameters:

className - the name of the class the field belongs to, in VM format (e.g., "java/lang/String")

name - the name of the field

signature - the field signature (type)

isStatic - true if field is static, false if not

Returns:

FieldDescriptor

getFieldDescriptor

public FieldDescriptor getFieldDescriptor(@SlashedClassName
                                          java.lang.String className,
                                          org.apache.bcel.classfile.Field ma)

getFieldDescriptor

public FieldDescriptor getFieldDescriptor(FieldAnnotation ma)

getClassDescriptor

public static ClassDescriptor getClassDescriptor(org.apache.bcel.generic.ObjectType type)

Get a ClassDescriptor for the class described by given ObjectType object.

Parameters:

type - an ObjectType

Returns:

a ClassDescriptor for the class described by the ObjectType

createClassDescriptor

public static ClassDescriptor createClassDescriptor(org.apache.bcel.classfile.JavaClass c)

createClassDescriptorFromResourceName

public static ClassDescriptor createClassDescriptorFromResourceName(java.lang.String resourceName)

Create a class descriptor from a resource name.

Parameters:

resourceName - the resource name

Returns:

the class descriptor

createClassDescriptorFromFieldSignature

@CheckForNull
public static ClassDescriptor createClassDescriptorFromFieldSignature(java.lang.String signature)

Create a class descriptor from a field signature

isClassResource

public static boolean isClassResource(java.lang.String resourceName)

Determine whether or not the given resource name refers to a class.

Parameters:

resourceName - the resource name

Returns:

true if the resource is a class, false otherwise

isModuleInfo

public static boolean isModuleInfo(java.lang.String resourceName)

Determine whether or not the given resource name refers to a module-info class.

Parameters:

resourceName - the resource name

Returns:

true if the resource is a module-info class, false otherwise

createClassDescriptorFromSignature

public static ClassDescriptor createClassDescriptorFromSignature(java.lang.String signature)

createClassOrObjectDescriptorFromSignature

public static ClassDescriptor createClassOrObjectDescriptorFromSignature(java.lang.String signature)

createClassDescriptor

public static ClassDescriptor createClassDescriptor(java.lang.Class<?> aClass)

createClassDescriptor

@Nonnull
public static ClassDescriptor createClassDescriptor(@SlashedClassName
                                                    java.lang.String className)

createClassDescriptor

public static ClassDescriptor[] createClassDescriptor(java.lang.String[] classNames)

createClassDescriptorFromDottedClassName

public static ClassDescriptor createClassDescriptorFromDottedClassName(java.lang.String dottedClassName)