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Java Source Code / Java Documentation » Byte Code » Javassist » javassist.bytecode

Source Cross Reference Class Diagram Java Document (Java Doc)

java.lang .Object

javassist.bytecode .MethodInfo

MethodInfo
final public class MethodInfo (Code)
	`method_info` structure. See Also: javassist.CtMethod.getMethodInfo See Also: javassist.CtConstructor.getMethodInfo

Field Summary
int	accessFlags
LinkedList	attribute
String	cachedName
ConstPool	constPool
int	descriptor
int	name
final public static String	nameClinit The name of class initializer (static initializer): `<clinit>`.
final public static String	nameInit The name of constructors: `<init>`.

Constructor Summary
public	MethodInfo(ConstPool cp, String methodname, String desc) Constructs a `method_info` structure.
	MethodInfo(ConstPool cp, DataInputStream in)
public	MethodInfo(ConstPool cp, String methodname, MethodInfo src, Map classnameMap) Constructs a copy of `method_info` structure.

Method Summary
public void	addAttribute(AttributeInfo info) Appends an attribute.
void	compact(ConstPool cp) Copies all constant pool items to a given new constant pool and replaces the original items with the new ones.
public int	getAccessFlags() Returns access flags.
public AttributeInfo	getAttribute(String name) Returns the attribute with the specified name.
public List	getAttributes() Returns all the attributes.
public CodeAttribute	getCodeAttribute() Returns a Code attribute.
public ConstPool	getConstPool() Returns a constant pool table used by this method.
public String	getDescriptor() Returns a method descriptor.
public ExceptionsAttribute	getExceptionsAttribute() Returns an Exceptions attribute.
public int	getLineNumber(int pos) Returns the line number of the source line corresponding to the specified bytecode contained in this method. Parameters: pos - the position of the bytecode (>= 0).
public String	getName() Returns a method name.
public boolean	isConstructor() Returns true if this is a constructor.
public boolean	isMethod() Returns true if this is not a constructor or a class initializer (static initializer).
public boolean	isStaticInitializer() Returns true if this is a class initializer (static initializer).
void	prune(ConstPool cp)
public void	removeCodeAttribute() Removes a Code attribute.
public void	removeExceptionsAttribute() Removes an Exception attribute.
public void	setAccessFlags(int acc) Sets access flags.
public void	setCodeAttribute(CodeAttribute cattr) Adds a Code attribute.
public void	setDescriptor(String desc) Sets a method descriptor.
public void	setExceptionsAttribute(ExceptionsAttribute cattr) Adds an Exception attribute.
public void	setName(String newName) Sets a method name.
public void	setSuperclass(String superclass) Changes a super constructor called by this constructor. This method modifies a call to `super()`, which should be at the head of a constructor body, so that a constructor in a different super class is called.
public String	toString() Returns a string representation of the object.
void	write(DataOutputStream out)

Field Detail

accessFlags
int accessFlags(Code)

attribute
LinkedList attribute(Code)

cachedName
String cachedName(Code)

constPool
ConstPool constPool(Code)

descriptor
int descriptor(Code)

name
int name(Code)

nameClinit
final public static String nameClinit(Code)
	The name of class initializer (static initializer): `<clinit>`.

nameInit
final public static String nameInit(Code)
	The name of constructors: `<init>`.

Constructor Detail

MethodInfo
public MethodInfo(ConstPool cp, String methodname, String desc)(Code)
	Constructs a `method_info` structure. The initial value of `access_flags` is zero. Parameters: cp - a constant pool table Parameters: methodname - method name Parameters: desc - method descriptor See Also: Descriptor

MethodInfo
MethodInfo(ConstPool cp, DataInputStream in) throws IOException(Code)

MethodInfo
public MethodInfo(ConstPool cp, String methodname, MethodInfo src, Map classnameMap) throws BadBytecode(Code)
	Constructs a copy of `method_info` structure. Class names appearing in the source `method_info` are renamed according to `classnameMap`. Note: only `Code` and `Exceptions` attributes are copied from the source. The other attributes are ignored. Parameters: cp - a constant pool table Parameters: methodname - a method name Parameters: src - a source `method_info` Parameters: classnameMap - specifies pairs of replaced and substituted name. See Also: Descriptor

Method Detail

addAttribute
public void addAttribute(AttributeInfo info)(Code)
	Appends an attribute. If there is already an attribute with the same name, the new one substitutes for it. See Also: MethodInfo.getAttributes()

compact
void compact(ConstPool cp)(Code)
	Copies all constant pool items to a given new constant pool and replaces the original items with the new ones. This is used for garbage collecting the items of removed fields and methods. Parameters: cp - the destination

getAccessFlags
public int getAccessFlags()(Code)
	Returns access flags. See Also: AccessFlag

getAttribute
public AttributeInfo getAttribute(String name)(Code)
	Returns the attribute with the specified name. If it is not found, this method returns null. Parameters: name - attribute name an `AttributeInfo` object or null. See Also: MethodInfo.getAttributes()

getAttributes
public List getAttributes()(Code)
	Returns all the attributes. The returned `List` object is shared with this object. If you add a new attribute to the list, the attribute is also added to the method represented by this object. If you remove an attribute from the list, it is also removed from the method. a list of `AttributeInfo` objects. See Also: AttributeInfo

getCodeAttribute
public CodeAttribute getCodeAttribute()(Code)
	Returns a Code attribute. a Code attribute or null if it is not specified.

getConstPool
public ConstPool getConstPool()(Code)
	Returns a constant pool table used by this method.

getDescriptor
public String getDescriptor()(Code)
	Returns a method descriptor. See Also: Descriptor

getExceptionsAttribute
public ExceptionsAttribute getExceptionsAttribute()(Code)
	Returns an Exceptions attribute. an Exceptions attribute or null if it is not specified.

getLineNumber
public int getLineNumber(int pos)(Code)
	Returns the line number of the source line corresponding to the specified bytecode contained in this method. Parameters: pos - the position of the bytecode (>= 0). an index into the codearray. -1 if this information is not available.

getName
public String getName()(Code)
	Returns a method name.

isConstructor
public boolean isConstructor()(Code)
	Returns true if this is a constructor.

isMethod
public boolean isMethod()(Code)
	Returns true if this is not a constructor or a class initializer (static initializer).

isStaticInitializer
public boolean isStaticInitializer()(Code)
	Returns true if this is a class initializer (static initializer).

prune
void prune(ConstPool cp)(Code)

removeCodeAttribute
public void removeCodeAttribute()(Code)
	Removes a Code attribute.

removeExceptionsAttribute
public void removeExceptionsAttribute()(Code)
	Removes an Exception attribute.

setAccessFlags
public void setAccessFlags(int acc)(Code)
	Sets access flags. See Also: AccessFlag

setCodeAttribute
public void setCodeAttribute(CodeAttribute cattr)(Code)
	Adds a Code attribute. The added attribute must share the same constant pool table as this `method_info` structure.

setDescriptor
public void setDescriptor(String desc)(Code)
	Sets a method descriptor. See Also: Descriptor

setExceptionsAttribute
public void setExceptionsAttribute(ExceptionsAttribute cattr)(Code)
	Adds an Exception attribute. The added attribute must share the same constant pool table as this `method_info` structure.

setName
public void setName(String newName)(Code)
	Sets a method name.

setSuperclass

public void setSuperclass(String superclass) throws BadBytecode(Code)

Changes a super constructor called by this constructor.

This method modifies a call to super(), which should be at the head of a constructor body, so that a constructor in a different super class is called. This method does not change actural parameters. Hence the new super class must have a constructor with the same signature as the original one.

This method should be called when the super class of the class declaring this method is changed.

This method does not perform anything unless this MethodInfo represents a constructor.
Parameters:
superclass - the new super class

toString
public String toString()(Code)
	Returns a string representation of the object.

write
void write(DataOutputStream out) throws IOException(Code)

Methods inherited from java.lang.Object

native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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