StackHeights

java.lang.Object

org.jboss.byteman.rule.compiler.StackHeights

public class StackHeights extends Object

container to track either the current or the maximum local variable count and stack height while generating compiled code for a rule

Field Summary

Fields

Modifier and Type

Field

Description

int

localCount

number of local variable slots

int

stackCount

number of stack slots
Constructor Summary

Constructors

Constructor

Description

StackHeights()

create withinitial counts 0

StackHeights(StackHeights toCopy)

create a copy with the same counts as the original
Method Summary

Modifier and Type

Method

Description

StackHeights

addLocalCount(int increment)

increment the local count and return this to allow chaining

StackHeights

addStackCount(int increment)

increment the stack count and return this to allow chaining

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details
- stackCount
  
  public int stackCount
  
  number of stack slots
- localCount
  
  public int localCount
  
  number of local variable slots
Constructor Details
- StackHeights
  
  public StackHeights()
  
  create withinitial counts 0
- StackHeights
  
  public StackHeights(StackHeights toCopy)
  
  create a copy with the same counts as the original
  
  Parameters:
  
  toCopy - the StackHeights instance to copy
Method Details
- addStackCount
  
  public StackHeights addStackCount(int increment) throws CompileException
  
  increment the stack count and return this to allow chaining
  
  Parameters:
  
  increment - the amount ot add to stackCount (can be negative)
  
  Returns:
  
  this
  
  Throws:
  
  CompileException - if the stack count goes negative
- addLocalCount
  
  public StackHeights addLocalCount(int increment) throws CompileException
  
  increment the local count and return this to allow chaining
  
  Parameters:
  
  increment - the amount ot add to localCount (can be negative)
  
  Returns:
  
  this
  
  Throws:
  
  CompileException - if the local count goes negative