Package org.jruby.ir.passes

Class LiveVariableAnalysis

java.lang.Object

org.jruby.ir.passes.CompilerPass

org.jruby.ir.passes.LiveVariableAnalysis

public class LiveVariableAnalysis
extends CompilerPass

Field Summary

Fields

Modifier and Type	Field	Description
private static final List<Class<? extends CompilerPass>>	DEPENDENCIES

Fields inherited from class org.jruby.ir.passes.CompilerPass

LOG

Constructor Summary

Constructors

Constructor	Description
LiveVariableAnalysis()

Method Summary

Modifier and Type	Method	Description
private void	collectNonLocalDirtyVars(FullInterpreterContext fic, Set<LocalVariable> vars, int minDepth)
Object	execute(FullInterpreterContext fic, Object... data)	Meat of an individual pass.
List<Class<? extends CompilerPass>>	getDependencies()
String	getLabel()	What is the user-friendly name of this compiler pass
boolean	invalidate(FullInterpreterContext fic)	The data that this pass is responsible for will get invalidated so that if this pass is then executed it will generate new pass data.
Object	previouslyRun(FullInterpreterContext fic)	If this pass has been previous run, then return the data from that last run.

Methods inherited from class org.jruby.ir.passes.CompilerPass

createPassInstance, createPassInstance, equals, getPassesFromString, getShortLabel, hashCode, run, run, run

Methods inherited from class java.lang.Object

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

Field Details

DEPENDENCIES

private static final List<Class<? extends CompilerPass>> DEPENDENCIES

Constructor Details

LiveVariableAnalysis

public LiveVariableAnalysis()

Method Details

getDependencies

public List<Class<? extends CompilerPass>> getDependencies()

Overrides:

getDependencies in class CompilerPass

getLabel

public String getLabel()

Description copied from class: CompilerPass

What is the user-friendly name of this compiler pass

Specified by:

getLabel in class CompilerPass

previouslyRun

public Object previouslyRun(FullInterpreterContext fic)

Description copied from class: CompilerPass

If this pass has been previous run, then return the data from that last run. Specific scopes can override this behavior.

Overrides:

previouslyRun in class CompilerPass

collectNonLocalDirtyVars

private void collectNonLocalDirtyVars(FullInterpreterContext fic,
 Set<LocalVariable> vars,
 int minDepth)

execute

public Object execute(FullInterpreterContext fic,
 Object... data)

Description copied from class: CompilerPass

Meat of an individual pass. run will call this after dependency resolution.

Specified by:

execute in class CompilerPass

Parameters:

fic - is the FullInterpreterContext to run this pass on

data - is the data supplied to this pass to use to execute the pass

invalidate

public boolean invalidate(FullInterpreterContext fic)

Description copied from class: CompilerPass

The data that this pass is responsible for will get invalidated so that if this pass is then executed it will generate new pass data. Note that some data will destructively manipulate dependent compiler pass data. In that case, the pass may wipe more than just it's data. In that case, an execute() should still rebuild everything fine because all compiler passes list their dependencies.

Overrides:

invalidate in class CompilerPass

Parameters:

fic - is where the pass stores its data.