Package org.apache.bcel.verifier.statics

Class LocalVariableInfo

java.lang.Object

org.apache.bcel.verifier.statics.LocalVariableInfo

public class LocalVariableInfo
extends Object

A utility class holding the information about the name and the type of a local variable in a given slot (== index). This information often changes in course of byte code offsets.

Constructor Summary

Constructors

Constructor	Description
LocalVariableInfo()

Method Summary

Modifier and Type	Method	Description
void	add(String name, int startPc, int length, Type type)	Adds some information about this local variable (slot).
String	getName(int offset)	Returns the name of the local variable that uses this local variable slot at the given bytecode offset.
Type	getType(int offset)	Returns the type of the local variable that uses this local variable slot at the given bytecode offset.

Methods inherited from class java.lang.Object

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

Constructor Details

LocalVariableInfo

public LocalVariableInfo()

Method Details

add

public void add(String name,
 int startPc,
 int length,
 Type type)
         throws LocalVariableInfoInconsistentException

Adds some information about this local variable (slot).

Parameters:

name - variable name

startPc - Range in which the variable is valid.

length - length of ...

type - variable type

Throws:

LocalVariableInfoInconsistentException - if the new information conflicts with already gathered information.

getName

public String getName(int offset)

Returns the name of the local variable that uses this local variable slot at the given bytecode offset. Care for legal bytecode offsets yourself, otherwise the return value might be wrong. May return 'null' if nothing is known about the type of this local variable slot at the given bytecode offset.

Parameters:

offset - bytecode offset.

Returns:

the name of the local variable that uses this local variable slot at the given bytecode offset.

getType

public Type getType(int offset)

Returns the type of the local variable that uses this local variable slot at the given bytecode offset. Care for legal bytecode offsets yourself, otherwise the return value might be wrong. May return 'null' if nothing is known about the type of this local variable slot at the given bytecode offset.

Parameters:

offset - bytecode offset.

Returns:

the type of the local variable that uses this local variable slot at the given bytecode offset.