gnu.bytecode

Class Variable

public class Variable extends Location implements Enumeration

Constructor Summary
	Variable()
	Variable(String name)
	Variable(String name, Type type)

Method Summary
void	allocateLocal(CodeAttr code) Allocate slots for a local variable (or parameter).
boolean	dead()
void	freeLocal(CodeAttr code)
boolean	hasMoreElements()
boolean	isAssigned() Returns true iff assigned to a local variable slot.
boolean	isParameter()
boolean	isSimple() Returns true for a "simple" variable.
Object	nextElement()
Variable	nextVar()
boolean	reserveLocal(int varIndex, CodeAttr code) Assign a local variable to a given local variable slot.
void	setParameter(boolean parameter)
void	setSimple(boolean simple)
String	toString()

Constructor Detail

Method Detail

allocateLocal

public void allocateLocal(CodeAttr code)

Allocate slots for a local variable (or parameter).

isAssigned

public final boolean isAssigned()

Returns true iff assigned to a local variable slot. Only relevant if isSimple ().

Returns true for a "simple" variable. A "simple" Variable can be stack-allocated using standard local variable slots. It is allocated by the codegen package. A non-simple variable may need heap allocation, or more more complex access; it is basically ignored by the codegen package, and must be managed by higher layers.

nextElement

public Object nextElement()

nextVar

public final Variable nextVar()

reserveLocal

public boolean reserveLocal(int varIndex, CodeAttr code)

Assign a local variable to a given local variable slot.

Parameters: varIndex the index of the local variables.

Returns: true iff we succeeded (i.e. the slot was unused)

setParameter

public final void setParameter(boolean parameter)

setSimple

public final void setSimple(boolean simple)

toString

public String toString()