Class LocalVariableInfo

java.lang.Object

org.ek9lang.compiler.backend.jvm.support.LocalVariableInfo

public final class LocalVariableInfo
extends Object

Metadata for a local variable needed for LocalVariableTable generation.

Tracks the variable name, type descriptor, scope, and JVM slot for generating debug information that enables jdb's 'locals' command.

The optional declaration label is the bytecode position immediately after the variable's null-init store (WP-B.2). Used as the LocalVariableTable range START so the range begins where the slot is verifier-defined — rather than at method entry, which made every local claim the method-wide range [0,end) and threw InconsistentDebugInfoException on a read-before-store (defect B-1).

Constructor Summary

Constructors

Constructor	Description
LocalVariableInfo(String name, String typeDescriptor, String scopeId)	Create local variable info.

Method Summary

Modifier and Type	Method	Description
org.objectweb.asm.Label	getDeclarationLabel()	The bytecode position after this variable's null-init store, or null for a parameter (which is live from method entry) or an uninstrumented compile.
String	getName()
String	getScopeId()
int	getSlot()
String	getTypeDescriptor()
void	setDeclarationLabel(org.objectweb.asm.Label declarationLabel)
void	setSlot(int slot)

Methods inherited from class Object

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

Constructor Details

LocalVariableInfo

public LocalVariableInfo(String name,
 String typeDescriptor,
 String scopeId)

Create local variable info.

Parameters:

name - Variable name

typeDescriptor - JVM type descriptor

scopeId - Scope identifier (may be null for method parameters)

Method Details

getName

public String getName()

getTypeDescriptor

public String getTypeDescriptor()

getScopeId

public String getScopeId()

getSlot

public int getSlot()

setSlot

public void setSlot(int slot)

getDeclarationLabel

public org.objectweb.asm.Label getDeclarationLabel()

The bytecode position after this variable's null-init store, or null for a parameter (which is live from method entry) or an uninstrumented compile. WP-B.2 range start.

setDeclarationLabel

public void setDeclarationLabel(org.objectweb.asm.Label declarationLabel)