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 and Description
static List<Class<? extends CompilerPass>>	DEPENDENCIES

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

NO_DEPENDENCIES

Constructor Summary

Constructors

Constructor and Description
LiveVariableAnalysis()

Method Summary

Methods

Modifier and Type	Method and Description
Object	execute(IRScope scope, Object... data) Meat of an individual pass.
String	getLabel() What is the user-friendly name of this compiler pass
boolean	invalidate(IRScope scope) 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(IRScope scope) 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, getDependencies, getPassesFromString, hashCode, run, run, run

Methods inherited from class java.lang.Object

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

Field Detail

DEPENDENCIES

public static List<Class<? extends CompilerPass>> DEPENDENCIES

Constructor Detail

LiveVariableAnalysis

public LiveVariableAnalysis()

Method Detail

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(IRScope scope)

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

execute

public Object execute(IRScope scope,
             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:

scope - is the scope to run this pass on

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

invalidate

public boolean invalidate(IRScope scope)

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:

scope - is where the pass stores its data.