Package org.apache.bcel.generic

Class Type

java.lang.Object

org.apache.bcel.generic.Type

Direct Known Subclasses:

BasicType, DOUBLE_Upper, LONG_Upper, ReferenceType, ReturnaddressType

public abstract class Type
extends java.lang.Object

Abstract super class for all possible Java types, namely basic types such as int, object types like String and array types, for example int[]

Field Summary

Fields

Modifier and Type	Field	Description
static BasicType	BOOLEAN
static BasicType	BYTE
static BasicType	CHAR
static ObjectType	CLASS
private static java.lang.ThreadLocal<java.lang.Integer>	CONSUMED_CHARS
static BasicType	DOUBLE
static BasicType	FLOAT
static BasicType	INT
static BasicType	LONG
static Type[]	NO_ARGS	Empty array.
static ReferenceType	NULL
static ObjectType	OBJECT
static BasicType	SHORT
protected java.lang.String	signature	Deprecated. (since 6.0) will be made private; do not access directly, use getter/setter
static ObjectType	STRING
static ObjectType	STRINGBUFFER
static ObjectType	THROWABLE
protected byte	type	Deprecated. (since 6.0) will be made private; do not access directly, use getter/setter
static Type	UNKNOWN
static BasicType	VOID	Predefined constants

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	Type(byte type, java.lang.String signature)

Method Summary

Modifier and Type	Method	Description
(package private) static int	consumed(int coded)
(package private) static int	encode(int size, int consumed)
boolean	equals(java.lang.Object o)
static Type[]	getArgumentTypes(java.lang.String signature)	Convert arguments of a method (signature) to an array of Type objects.
(package private) static int	getArgumentTypesSize(java.lang.String signature)
java.lang.String	getClassName()	Gets the class name.
static java.lang.String	getMethodSignature(Type returnType, Type[] argTypes)	Convert type to Java method signature, for example int[] f(java.lang.String x) becomes (Ljava/lang/String;)[I
static Type	getReturnType(java.lang.String signature)	Convert return value of a method (signature) to a Type object.
(package private) static int	getReturnTypeSize(java.lang.String signature)
java.lang.String	getSignature()	Gets the signature for this type.
static java.lang.String	getSignature(java.lang.reflect.Method meth)
int	getSize()	Gets the stack size of this type.
byte	getType()	Gets the type as defined in Constants.
static Type	getType(java.lang.Class<?> cls)	Convert runtime Class to BCEL Type object.
static Type	getType(java.lang.String signature)	Convert signature to a Type object.
static Type[]	getTypes(java.lang.Class<?>[] classes)	Convert runtime java.lang.Class[] to BCEL Type objects.
(package private) static int	getTypeSize(java.lang.String signature)
int	hashCode()	Gets the hash code of this Type.
(package private) static java.lang.String	internalTypeNameToSignature(java.lang.String internalTypeName)
Type	normalizeForStackOrLocal()	boolean, short and char variable are considered as int in the stack or local variable area.
(package private) static int	size(int coded)
java.lang.String	toString()
private static int	unwrap(java.lang.ThreadLocal<java.lang.Integer> tl)
private static void	wrap(java.lang.ThreadLocal<java.lang.Integer> tl, int value)

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

VOID

public static final BasicType VOID

Predefined constants

BOOLEAN

public static final BasicType BOOLEAN

INT

public static final BasicType INT

SHORT

public static final BasicType SHORT

BYTE

public static final BasicType BYTE

LONG

public static final BasicType LONG

DOUBLE

public static final BasicType DOUBLE

FLOAT

public static final BasicType FLOAT

CHAR

public static final BasicType CHAR

OBJECT

public static final ObjectType OBJECT

CLASS

public static final ObjectType CLASS

STRING

public static final ObjectType STRING

STRINGBUFFER

public static final ObjectType STRINGBUFFER

THROWABLE

public static final ObjectType THROWABLE

NO_ARGS

public static final Type[] NO_ARGS

Empty array.

NULL

public static final ReferenceType NULL

UNKNOWN

public static final Type UNKNOWN

CONSUMED_CHARS

private static final java.lang.ThreadLocal<java.lang.Integer> CONSUMED_CHARS

type

@Deprecated
protected byte type

Deprecated.

(since 6.0) will be made private; do not access directly, use getter/setter

signature

@Deprecated
protected java.lang.String signature

Deprecated.

(since 6.0) will be made private; do not access directly, use getter/setter

Constructor Detail

Type

protected Type(byte type,
               java.lang.String signature)

Method Detail

consumed

static int consumed(int coded)

encode

static int encode(int size,
                  int consumed)

getArgumentTypes

public static Type[] getArgumentTypes(java.lang.String signature)

Convert arguments of a method (signature) to an array of Type objects.

Parameters:

signature - signature string such as (Ljava/lang/String;)V.

Returns:

array of argument types.

getArgumentTypesSize

static int getArgumentTypesSize(java.lang.String signature)

getMethodSignature

public static java.lang.String getMethodSignature(Type returnType,
                                                  Type[] argTypes)

Convert type to Java method signature, for example int[] f(java.lang.String x) becomes (Ljava/lang/String;)[I

Parameters:

returnType - what the method returns.

argTypes - what are the argument types.

Returns:

method signature for given type(s).

getReturnType

public static Type getReturnType(java.lang.String signature)

Convert return value of a method (signature) to a Type object.

Parameters:

signature - signature string such as (Ljava/lang/String;)V.

Returns:

return type.

getReturnTypeSize

static int getReturnTypeSize(java.lang.String signature)

getSignature

public static java.lang.String getSignature(java.lang.reflect.Method meth)

getType

public static Type getType(java.lang.Class<?> cls)

Convert runtime Class to BCEL Type object.

Parameters:

cls - Java class.

Returns:

corresponding Type object.

getType

public static Type getType(java.lang.String signature)
                    throws java.lang.StringIndexOutOfBoundsException

Convert signature to a Type object.

Parameters:

signature - signature string such as Ljava/lang/String;.

Returns:

type object.

Throws:

java.lang.StringIndexOutOfBoundsException

getTypes

public static Type[] getTypes(java.lang.Class<?>[] classes)

Convert runtime java.lang.Class[] to BCEL Type objects.

Parameters:

classes - an array of runtime class objects.

Returns:

array of corresponding Type objects.

getTypeSize

static int getTypeSize(java.lang.String signature)
                throws java.lang.StringIndexOutOfBoundsException

Throws:

java.lang.StringIndexOutOfBoundsException

internalTypeNameToSignature

static java.lang.String internalTypeNameToSignature(java.lang.String internalTypeName)

size

static int size(int coded)

unwrap

private static int unwrap(java.lang.ThreadLocal<java.lang.Integer> tl)

wrap

private static void wrap(java.lang.ThreadLocal<java.lang.Integer> tl,
                         int value)

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

Returns:

whether the Types are equal.

getClassName

public java.lang.String getClassName()

Gets the class name.

Returns:

the class name.

getSignature

public java.lang.String getSignature()

Gets the signature for this type.

Returns:

signature for given type.

getSize

public int getSize()

Gets the stack size of this type.

Returns:

stack size of this type (2 for long and double, 0 for void, 1 otherwise).

getType

public byte getType()

Gets the type as defined in Constants.

Returns:

type as defined in Constants.

hashCode

public int hashCode()

Gets the hash code of this Type.

Overrides:

hashCode in class java.lang.Object

Returns:

hash code of Type.

normalizeForStackOrLocal

public Type normalizeForStackOrLocal()

boolean, short and char variable are considered as int in the stack or local variable area. Returns INT for BOOLEAN, SHORT or CHAR, otherwise returns the given type.

Returns:

the normalized type.

Since:

6.0

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

Returns:

Type string, for example 'int[]'.