classUtils.javassist.bytecode
Class MethodInfo

java.lang.Object
  classUtils.javassist.bytecode.MethodInfo

public final class MethodInfo
extends java.lang.Object

method_info structure.

See Also:

CtMethod.getMethodInfo(), CtConstructor.getMethodInfo()

Field Summary

static java.lang.String	nameClinit The name of class initializer (static initializer): <clinit>.
static java.lang.String	nameInit The name of constructors: <init>.

Constructor Summary

MethodInfo(ConstPool cp, java.lang.String methodname, MethodInfo src, java.util.Map classnameMap)
Constructs a copy of method_info structure.

MethodInfo(ConstPool cp, java.lang.String methodname, java.lang.String desc)
Constructs a method_info structure.

Method Summary

void	addAttribute(AttributeInfo info) Appends an attribute.
int	getAccessFlags() Returns access flags.
AttributeInfo	getAttribute(java.lang.String name) Returns the attribute with the specified name.
java.util.List	getAttributes() Returns all the attributes.
CodeAttribute	getCodeAttribute() Returns a Code attribute.
ConstPool	getConstPool() Returns a constant pool table used by this method.
java.lang.String	getDescriptor() Returns a method descriptor.
ExceptionsAttribute	getExceptionsAttribute() Returns an Exceptions attribute.
int	getLineNumber(int pos) Returns the line number of the source line corresponding to the specified bytecode contained in this method.
java.lang.String	getName() Returns a method name.
boolean	isConstructor() Returns true if this is a constructor.
boolean	isMethod() Returns true if this is not a constructor or a class initializer (static initializer).
boolean	isStaticInitializer() Returns true if this is a class initializer (static initializer).
void	removeCodeAttribute() Removes a Code attribute.
void	removeExceptionsAttribute() Removes an Exception attribute.
void	setAccessFlags(int acc) Sets access flags.
void	setCodeAttribute(CodeAttribute cattr) Adds a Code attribute.
void	setDescriptor(java.lang.String desc) Sets a method descriptor.
void	setExceptionsAttribute(ExceptionsAttribute cattr) Adds an Exception attribute.
void	setName(java.lang.String newName) Sets a method name.
void	setSuperclass(java.lang.String superclass) Changes a super constructor called by this constructor.

Methods inherited from class java.lang.Object

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

Field Detail

nameInit

public static final java.lang.String nameInit

The name of constructors: <init>.

See Also:

Constant Field Values

nameClinit

public static final java.lang.String nameClinit

The name of class initializer (static initializer): <clinit>.

See Also:

Constant Field Values

Constructor Detail

MethodInfo

public MethodInfo(ConstPool cp,
                  java.lang.String methodname,
                  java.lang.String desc)

Constructs a method_info structure.

Parameters:

cp - a constant pool table

methodname - method name

desc - method descriptor

See Also:

Descriptor

MethodInfo

public MethodInfo(ConstPool cp,
                  java.lang.String methodname,
                  MethodInfo src,
                  java.util.Map classnameMap)
           throws BadBytecode

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

methodname - a method name

src - a source method_info

classnameMap - specifies pairs of replaced and substituted name.

Throws:

BadBytecode

See Also:

Descriptor

Method Detail

getName

public java.lang.String getName()

Returns a method name.

setName

public void setName(java.lang.String newName)

Sets a method name.

isMethod

public boolean isMethod()

Returns true if this is not a constructor or a class initializer (static initializer).

getConstPool

public ConstPool getConstPool()

Returns a constant pool table used by this method.

isConstructor

public boolean isConstructor()

Returns true if this is a constructor.

isStaticInitializer

public boolean isStaticInitializer()

Returns true if this is a class initializer (static initializer).

getAccessFlags

public int getAccessFlags()

Returns access flags.

See Also:

AccessFlag

setAccessFlags

public void setAccessFlags(int acc)

Sets access flags.

See Also:

AccessFlag

getDescriptor

public java.lang.String getDescriptor()

Returns a method descriptor.

See Also:

Descriptor

setDescriptor

public void setDescriptor(java.lang.String desc)

Sets a method descriptor.

See Also:

Descriptor

getAttributes

public java.util.List getAttributes()

Returns all the attributes.

Returns:

a list of AttributeInfo objects.

See Also:

AttributeInfo

getAttribute

public AttributeInfo getAttribute(java.lang.String name)

Returns the attribute with the specified name. If it is not found, this method returns null.

Parameters:

name - attribute name

Returns:

an AttributeInfo object or null.

addAttribute

public void addAttribute(AttributeInfo info)

Appends an attribute. If there is already an attribute with the same name, the new one substitutes for it.

getExceptionsAttribute

public ExceptionsAttribute getExceptionsAttribute()

Returns an Exceptions attribute.

Returns:

an Exceptions attribute or null if it is not specified.

getCodeAttribute

public CodeAttribute getCodeAttribute()

Returns a Code attribute.

Returns:

a Code attribute or null if it is not specified.

removeExceptionsAttribute

public void removeExceptionsAttribute()

Removes an Exception attribute.

setExceptionsAttribute

public void setExceptionsAttribute(ExceptionsAttribute cattr)

Adds an Exception attribute.

The added attribute must share the same constant pool table as this method_info structure.

removeCodeAttribute

public void removeCodeAttribute()

Removes a Code attribute.

setCodeAttribute

public void setCodeAttribute(CodeAttribute cattr)

Adds a Code attribute.

The added attribute must share the same constant pool table as this method_info structure.

getLineNumber

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). an index into the code array.

Returns:

-1 if this information is not available.

setSuperclass

public void setSuperclass(java.lang.String superclass)
                   throws BadBytecode

Changes a super constructor called by this constructor.

This method modifies a call to super(), which should be affineTransform 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

Throws:

BadBytecode