Package gnu.bytecode

Class LocalVarsAttr

java.lang.Object

gnu.bytecode.Attribute

gnu.bytecode.LocalVarsAttr

public class LocalVarsAttr
extends Attribute

Field Summary

Fields

Modifier and Type	Field	Description
Scope	current_scope

Constructor Summary

Constructors

Constructor	Description
LocalVarsAttr(CodeAttr code)	Add a new LocalVarsAttr to a CodeAttr.
LocalVarsAttr(Method method)	Create, but don't link into method.code's attributes list (yet).

Method Summary

Modifier and Type	Method	Description
VarEnumerator	allVars()
void	assignConstants(ClassType cl)	Add any needed constant pool entries for this Attribute.
void	enterScope(Scope scope)
final int	getCount()
final int	getLength()	Return the length of the attribute in bytes.
final Method	getMethod()
final boolean	isEmpty()
void	preserveVariablesUpto(Scope scope)	Mark scopes upto specified scope as 'preserved'.
void	print(ClassTypeWriter dst)
void	write(DataOutputStream dstr)	Write out the contents of the Attribute.

Methods inherited from class gnu.bytecode.Attribute

addToFrontOf, assignConstants, count, get, getConstants, getContainer, getLengthAll, getName, getNameIndex, getNext, isSkipped, setContainer, setName, setNameIndex, setNext, setSkipped, setSkipped, writeAll

Methods inherited from class java.lang.Object

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

Field Details

current_scope

public Scope current_scope

Constructor Details

LocalVarsAttr

public LocalVarsAttr(CodeAttr code)

Add a new LocalVarsAttr to a CodeAttr.

LocalVarsAttr

public LocalVarsAttr(Method method)

Create, but don't link into method.code's attributes list (yet).

Method Details

getMethod

public final Method getMethod()

allVars

public VarEnumerator allVars()

enterScope

public void enterScope(Scope scope)

preserveVariablesUpto

public void preserveVariablesUpto(Scope scope)

Mark scopes upto specified scope as 'preserved'. This means that the local variable slots are not available for reuse when the scope exits. The effected scopes are all ancestor scopes from the current scope (inclusive) upto the specified scope (exclusive).

isEmpty

public final boolean isEmpty()

getCount

public final int getCount()

getLength

public final int getLength()

Description copied from class: Attribute

Return the length of the attribute in bytes. Does not include the 6-byte header (for the name_index and the length).

Specified by:

getLength in class Attribute

assignConstants

public void assignConstants(ClassType cl)

Description copied from class: Attribute

Add any needed constant pool entries for this Attribute. Overridden by sub-classes. Do any other cleanup needed before writing out a .class file.

Overrides:

assignConstants in class Attribute

write

public void write(DataOutputStream dstr)
           throws IOException

Description copied from class: Attribute

Write out the contents of the Attribute. Does not write the 6-byte attribute header.

Specified by:

write in class Attribute

Throws:

IOException

print

public void print(ClassTypeWriter dst)

Overrides:

print in class Attribute