harpoon.Analysis.PreciseGC
Class RCTransformer

java.lang.Object
  harpoon.Analysis.Transformation.MethodSplitter
      harpoon.Analysis.PreciseGC.RCTransformer

All Implemented Interfaces:

Serializable

public class RCTransformer
extends MethodSplitter

RCTransformer transforms recursive constructors that build their data structures in a top-down fashion into methods that build their data structures in a bottom-up fashion. Also transforms the callers of these methods.

Version:

$Id: RCTransformer.java,v 1.5 2004/02/08 03:20:07 cananian Exp $

Author:

Karen Zee <kkz@tmi.lcs.mit.edu>

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class harpoon.Analysis.Transformation.MethodSplitter

MethodSplitter.Token

Field Summary

static MethodSplitter.Token

CREATOR The CREATOR token represents the transformed version of the method.

Fields inherited from class harpoon.Analysis.Transformation.MethodSplitter

ORIGINAL

Constructor Summary

RCTransformer(HCodeFactory parent, ClassHierarchy ch, Linker lnkr)
Creates a RCTransformer.

Method Summary

protected boolean	isValidToken(MethodSplitter.Token which) Check the validity of a given MethodSplitter.Token.
protected String	mutateDescriptor(HMethod hm, MethodSplitter.Token which) Mutated constructors have signatures differing from the original.
protected HCode	mutateHCode(HCodeAndMaps input, MethodSplitter.Token which) Modifies two classes of methods: - mutates recursive constructors into "creators", methods that build objects in a bottom-up fashion - modifies callers of these constructors to call the new creator methods

Methods inherited from class harpoon.Analysis.Transformation.MethodSplitter

cloneHCode, codeFactory, isVirtual, mutateCodeName, select

Methods inherited from class java.lang.Object

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

Field Detail

CREATOR

public static final MethodSplitter.Token CREATOR

The CREATOR token represents the transformed version of the method.

Constructor Detail

RCTransformer

public RCTransformer(HCodeFactory parent,
                     ClassHierarchy ch,
                     Linker lnkr)

Creates a RCTransformer.

Method Detail

mutateDescriptor

protected String mutateDescriptor(HMethod hm,
                                  MethodSplitter.Token which)

Mutated constructors have signatures differing from the original.

Overrides:

mutateDescriptor in class MethodSplitter

mutateHCode

protected HCode mutateHCode(HCodeAndMaps input,
                            MethodSplitter.Token which)

Modifies two classes of methods: - mutates recursive constructors into "creators", methods that build objects in a bottom-up fashion - modifies callers of these constructors to call the new creator methods

Overrides:

mutateHCode in class MethodSplitter

isValidToken

protected boolean isValidToken(MethodSplitter.Token which)

Check the validity of a given MethodSplitter.Token.

Overrides:

isValidToken in class MethodSplitter