Package com.tonic.renamer

Class RenamerContext

java.lang.Object

com.tonic.renamer.RenamerContext

public class RenamerContext
extends Object

Shared state for a rename run - the class pool, the mapping store, and a class hierarchy and descriptor/signature remappers derived from them.

Constructor Summary

Constructors

Constructor	Description
RenamerContext(ClassPool classPool, MappingStore mappings)	Creates a context and builds the class hierarchy and remappers from the given pool and mappings.

Method Summary

Modifier and Type	Method	Description
int	countNameAndTypeReferences(ConstPool cp, int natIndex)	Counts how many items reference a NameAndType entry.
Set<Integer>	findMatchingNameAndTypes(ClassFile cf, String methodName, String descriptor)	Collects all NameAndType indices that are used for a specific method signature.
List<ClassFile>	getAllClasses()
ClassFile	getClass(String internalName)	Gets a class from the ClassPool by name.
ClassPool	getClassPool()
DescriptorRemapper	getDescriptorRemapper()
ClassHierarchy	getHierarchy()
int	getIndexOf(ConstPool cp, Item<?> item)	Gets the index of an item in a constant pool.
MappingStore	getMappings()
SignatureRemapper	getSignatureRemapper()
boolean	isSharedNameAndType(ConstPool cp, int natIndex)	Checks if a NameAndType entry is shared by multiple references.
void	rebuildHierarchy()	Rebuilds the class hierarchy after class renames.
void	remapDescriptorsInClass(ClassFile cf)	Updates all Utf8 items that contain class references in descriptors.
int	updateNameAndTypeName(ConstPool cp, int natIndex, String newName)	Updates a specific NameAndType to use a new name.

Methods inherited from class java.lang.Object

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

Constructor Detail

RenamerContext

public RenamerContext(ClassPool classPool,
                      MappingStore mappings)

Creates a context and builds the class hierarchy and remappers from the given pool and mappings.

Parameters:

classPool - the classes being renamed

mappings - the old-to-new name mappings

Method Detail

getClassPool

public ClassPool getClassPool()

Returns:

the class pool being renamed

getMappings

public MappingStore getMappings()

Returns:

the store holding the old-to-new name mappings

getHierarchy

public ClassHierarchy getHierarchy()

Returns:

the class hierarchy built for the pool

getDescriptorRemapper

public DescriptorRemapper getDescriptorRemapper()

Returns:

the remapper that rewrites type descriptors

getSignatureRemapper

public SignatureRemapper getSignatureRemapper()

Returns:

the remapper that rewrites generic signatures

getAllClasses

public List<ClassFile> getAllClasses()

Returns:

every class in the pool

getClass

public ClassFile getClass(String internalName)

Gets a class from the ClassPool by name.

Parameters:

internalName - the internal class name (could be old or new name)

Returns:

the ClassFile, or null if not found

rebuildHierarchy

public void rebuildHierarchy()

Rebuilds the class hierarchy after class renames.

countNameAndTypeReferences

public int countNameAndTypeReferences(ConstPool cp,
                                      int natIndex)

Counts how many items reference a NameAndType entry.

Parameters:

cp - The constant pool

natIndex - The index of the NameAndType entry

Returns:

The number of items referencing this NameAndType

isSharedNameAndType

public boolean isSharedNameAndType(ConstPool cp,
                                   int natIndex)

Checks if a NameAndType entry is shared by multiple references.

Parameters:

cp - the constant pool to scan

natIndex - the index of the NameAndType entry

Returns:

true when more than one member reference points at it

getIndexOf

public int getIndexOf(ConstPool cp,
                      Item<?> item)

Gets the index of an item in a constant pool.

Parameters:

cp - the constant pool to search

item - the item to locate

Returns:

the pool index of the item

findMatchingNameAndTypes

public Set<Integer> findMatchingNameAndTypes(ClassFile cf,
                                             String methodName,
                                             String descriptor)

Collects all NameAndType indices that are used for a specific method signature.

Parameters:

cf - The ClassFile containing the constant pool

methodName - The method name to find

descriptor - The method descriptor

Returns:

Set of NAT indices matching this signature

remapDescriptorsInClass

public void remapDescriptorsInClass(ClassFile cf)

Updates all Utf8 items that contain class references in descriptors.

Parameters:

cf - The ClassFile to update

updateNameAndTypeName

public int updateNameAndTypeName(ConstPool cp,
                                 int natIndex,
                                 String newName)

Updates a specific NameAndType to use a new name.

Parameters:

cp - The constant pool

natIndex - The index of the NameAndType

newName - The new name to use

Returns:

The index of the (possibly new) NameAndType entry