Package kilim.analysis

Class Frame

java.lang.Object

kilim.analysis.Frame

public class Frame
extends java.lang.Object

An activation frame.

Field Summary

Fields

Modifier and Type	Field	Description
(package private) Value[]	locals
(package private) int	numMonitorsActive
(package private) Value[]	stack
(package private) int	stacklen

Constructor Summary

Constructors

Modifier	Constructor	Description
	Frame(int nLocals, int nStack)
private	Frame(int nLocals, int nStack, boolean init)
	Frame(java.lang.String classDesc, org.objectweb.asm.tree.MethodNode method)
private	Frame(Value[] alocals, Value[] astack, int astacklen, int aNumMonitorsActive)

Method Summary

Modifier and Type	Method	Description
private boolean	checkType(java.lang.String desc)
(package private) void	clearStack()
Frame	dup()
static Value[]	dupArray(Value[] a)
boolean	equals(java.lang.Object other)
Value	getLocal(int local)
Value	getLocal(int local, int opcode)
int	getMaxLocals()
Value	getStack(int pos)
int	getStackLen()
int	hashCode()
Frame	merge(Detector det, Frame inframe, boolean localsOnly, Usage usage)	Merge the local variables and stack from the incoming frame into the current frame.
Value	pop()
void	popn(int n)
Value	popWord()
Value	push(Value v)
int	setLocal(int local, Value v)
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

locals

Value[] locals

stack

Value[] stack

numMonitorsActive

int numMonitorsActive

stacklen

int stacklen

Constructor Detail

Frame

private Frame(int nLocals,
              int nStack,
              boolean init)

Frame

public Frame(int nLocals,
             int nStack)

Frame

private Frame(Value[] alocals,
              Value[] astack,
              int astacklen,
              int aNumMonitorsActive)

Frame

public Frame(java.lang.String classDesc,
             org.objectweb.asm.tree.MethodNode method)

Method Detail

merge

public Frame merge(Detector det,
                   Frame inframe,
                   boolean localsOnly,
                   Usage usage)

Merge the local variables and stack from the incoming frame into the current frame.

Parameters:

inframe - -- incoming frame

localsOnly - -- true for exception handlers, because the stack is cleared.

usage - -- Only those locals are merged that are deemed live (@see Usage#isLiveIn(int))

Returns:

this, if the merge didn't change anything or a new Frame if the operation changed a slot on the stack or a local variable

dupArray

public static Value[] dupArray(Value[] a)

dup

public Frame dup()

checkType

private boolean checkType(java.lang.String desc)

setLocal

public int setLocal(int local,
                    Value v)

getLocal

public Value getLocal(int local,
                      int opcode)

getLocal

public Value getLocal(int local)

getStack

public Value getStack(int pos)

push

public Value push(Value v)

pop

public Value pop()

popWord

public Value popWord()

popn

public void popn(int n)

clearStack

void clearStack()

equals

public boolean equals(java.lang.Object other)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

getMaxLocals

public int getMaxLocals()

getStackLen

public int getStackLen()