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org.jboss.classfilewriter.util

public Class DescriptorUtils

Class Inheritance

extends Object

java.lang.Object
org.jboss.classfilewriter.util.DescriptorUtils

Imports

java.lang.reflect.Constructor, .Method, java.util.ArrayList, .List

Utility class for working with method descriptors

Author: Stuart Douglas

Field Summary

Modifier and Type	Field and Description
pack-priv static final String	BOOLEAN_CLASS_DESCRIPTOR
pack-priv static final String	BYTE_CLASS_DESCRIPTOR
pack-priv static final String	CHAR_CLASS_DESCRIPTOR
pack-priv static final String	DOUBLE_CLASS_DESCRIPTOR
pack-priv static final String	FLOAT_CLASS_DESCRIPTOR
pack-priv static final String	INT_CLASS_DESCRIPTOR
pack-priv static final String	LONG_CLASS_DESCRIPTOR
pack-priv static final String	SHORT_CLASS_DESCRIPTOR
pack-priv static final String	VOID_CLASS_DESCRIPTOR

Constructor Summary

Access	Constructor and Description
public	DescriptorUtils()

Method Summary

Modifier and Type	Method and Description
public static boolean	isPrimitive(String descriptor) returns true if the descriptor represents a primitive type
public static boolean	isWide(String descriptor) returns true if the descriptor represents a long or a double
public static boolean	isWide(Class<?> cls) returns true if the class represents a long or a double
public static String	makeDescriptor(String className) Changes a class name to the internal form suitable for use in a descriptor string.
public static String	makeDescriptor(Class<?> c)
public static String	makeDescriptor(Constructor<?> c)
public static String	methodDescriptor(Method m)
public static String	methodDescriptor(String[] parameters, String returnType)
public static String[]	parameterDescriptors(String methodDescriptor) returns an array of String representations of the parameter types.
public static String[]	parameterDescriptors(Method m)
public static String[]	parameterDescriptors(Class<?>[] parameters)
public static String	returnType(String methodDescriptor)
public static String	validateDescriptor(String descriptor) performs basic validation on a descriptor

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

Field Detail

BOOLEAN_CLASS_DESCRIPTOR	back to summary
pack-priv static final String BOOLEAN_CLASS_DESCRIPTOR

BYTE_CLASS_DESCRIPTOR	back to summary
pack-priv static final String BYTE_CLASS_DESCRIPTOR

CHAR_CLASS_DESCRIPTOR	back to summary
pack-priv static final String CHAR_CLASS_DESCRIPTOR

DOUBLE_CLASS_DESCRIPTOR	back to summary
pack-priv static final String DOUBLE_CLASS_DESCRIPTOR

FLOAT_CLASS_DESCRIPTOR	back to summary
pack-priv static final String FLOAT_CLASS_DESCRIPTOR

INT_CLASS_DESCRIPTOR	back to summary
pack-priv static final String INT_CLASS_DESCRIPTOR

LONG_CLASS_DESCRIPTOR	back to summary
pack-priv static final String LONG_CLASS_DESCRIPTOR

SHORT_CLASS_DESCRIPTOR	back to summary
pack-priv static final String SHORT_CLASS_DESCRIPTOR

VOID_CLASS_DESCRIPTOR	back to summary
pack-priv static final String VOID_CLASS_DESCRIPTOR

Constructor Detail

DescriptorUtils	back to summary
public DescriptorUtils()

Method Detail

isPrimitive	back to summary
public static boolean isPrimitive(String descriptor) returns true if the descriptor represents a primitive type

isWide	back to summary
public static boolean isWide(String descriptor) returns true if the descriptor represents a long or a double

isWide	back to summary
public static boolean isWide(Class<?> cls) returns true if the class represents a long or a double

makeDescriptor

back to summary

public static String makeDescriptor(String className)

Changes a class name to the internal form suitable for use in a descriptor string.

e.g. java.lang.String => Ljava/lang/String;

makeDescriptor	back to summary
public static String makeDescriptor(Class<?> c)

makeDescriptor	back to summary
public static String makeDescriptor(Constructor<?> c)

methodDescriptor	back to summary
public static String methodDescriptor(Method m)

methodDescriptor	back to summary
public static String methodDescriptor(String[] parameters, String returnType)

parameterDescriptors	back to summary
public static String[] parameterDescriptors(String methodDescriptor) returns an array of String representations of the parameter types. Primitives are returned as their native representations, while clases are returned in the internal descriptor form e.g. Ljava/lang/Integer;

parameterDescriptors	back to summary
public static String[] parameterDescriptors(Method m)

parameterDescriptors	back to summary
public static String[] parameterDescriptors(Class<?>[] parameters)

returnType	back to summary
public static String returnType(String methodDescriptor)

validateDescriptor	back to summary
public static String validateDescriptor(String descriptor) performs basic validation on a descriptor