Package org.jruby.ir.transformations.inlining

Class CloneInfo

java.lang.Object

org.jruby.ir.transformations.inlining.CloneInfo

Direct Known Subclasses:

InlineCloneInfo, SimpleCloneInfo

public abstract class CloneInfo
extends Object

Base class for cloning context object. Simple cloning and inline cloning both have some common state and logic such as needing to maintain references to new constructed replacement labels and variables.

Field Summary

Fields

Modifier and Type	Field	Description
protected final Map<Label,Label>	labelRenameMap
protected final IRScope	scope
protected final Map<Variable,Variable>	variableRenameMap

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	CloneInfo(IRScope scope)

Method Summary

Modifier and Type	Method	Description
SimpleCloneInfo	cloneForCloningClosure(IRClosure clonedClosure)
Label	getRenamedLabel(Label label)	Return a new instance of a label for the newly cloned scope.
protected abstract Label	getRenamedLabelSimple(Label l)
protected abstract Variable	getRenamedSelfVariable(Variable self)	How do we rename %self?
Variable	getRenamedVariable(Variable variable)	Return a new instance of a variable for the newly cloned scope.
protected abstract Variable	getRenamedVariableSimple(Variable variable)	How are typical variables renamed if they were not yet found in the variable renaming map?
IRScope	getScope()

Methods inherited from class java.lang.Object

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

Field Details

labelRenameMap

protected final Map<Label,Label> labelRenameMap

variableRenameMap

protected final Map<Variable,Variable> variableRenameMap

scope

protected final IRScope scope

Constructor Details

CloneInfo

protected CloneInfo(IRScope scope)

Method Details

cloneForCloningClosure

public SimpleCloneInfo cloneForCloningClosure(IRClosure clonedClosure)

getScope

public IRScope getScope()

Returns:

The IRScope this cloning operation is happening in (or is coming from).

getRenamedLabelSimple

protected abstract Label getRenamedLabelSimple(Label l)

getRenamedLabel

public Label getRenamedLabel(Label label)

Return a new instance of a label for the newly cloned scope. Maps are maintained because Labels expect to share the same instance across a CFG.

Parameters:

label - to be renamed.

Returns:

the new Label

getRenamedSelfVariable

protected abstract Variable getRenamedSelfVariable(Variable self)

How do we rename %self?

Parameters:

self - to be renamed

Returns:

the new self or itself

getRenamedVariableSimple

protected abstract Variable getRenamedVariableSimple(Variable variable)

How are typical variables renamed if they were not yet found in the variable renaming map?

Parameters:

variable - to be renamed

Returns:

the new variable

getRenamedVariable

public Variable getRenamedVariable(Variable variable)

Return a new instance of a variable for the newly cloned scope. Maps are maintained because Variables typically share the same instance across a CFG (of the same lexical depth).

Parameters:

variable - to be renamed

Returns:

the new Variable