Class LocalVariableTableReader

java.lang.Object

com.ibm.wala.shrike.shrikeCT.AttributeReader

com.ibm.wala.shrike.shrikeCT.LocalVariableTableReader

public final class LocalVariableTableReader
extends AttributeReader

This class reads LocalVariableTable attributes.

Instead of constructing a LocalVariableTable directly, consider just calling LocalVariableTable.makeVarMap for convenient access to aggregate local variable data from all the LocalVariableTable attributes for a given Code.

Field Summary

Fields inherited from class AttributeReader

attr, cr, length

Modifier and Type	Field	Description
protected final int	attr
protected final ClassReader	cr
protected final int	length

Constructor Summary

Constructors

Constructor	Description
LocalVariableTableReader(ClassReader.AttrIterator iter)

Method Summary

Modifier and Type	Method	Description
int[]	getRawTable()
static int[][]	makeVarMap(CodeReader code)

Methods inherited from class AttributeReader

checkSize, checkSizeEquals, getClassReader, getRawOffset, getRawSize

Modifier and Type	Method	Description
protected final void	checkSize(int offset, int len)	Ensure that the len bytes starting at offset fall within the attribute data.
protected final void	checkSizeEquals(int offset, int len)	Ensure that the len bytes starting at offset end at the end of the attribute data.
final ClassReader	getClassReader()
final int	getRawOffset()
final int	getRawSize()

Methods inherited from class Object

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

Constructor Details

LocalVariableTableReader

public LocalVariableTableReader(ClassReader.AttrIterator iter)
                         throws InvalidClassFileException

Throws:

InvalidClassFileException

Method Details

getRawTable

public int[] getRawTable()

Returns:

the raw line number table data, a flattened sequence of (startPC, PClength, nameIndex, typeIndex, var) tuples

makeVarMap

public static int[][] makeVarMap(CodeReader code)
                          throws InvalidClassFileException,
IllegalArgumentException

Returns:

an array mapping bytecode offsets to arrays representing the local variable maps for each offset; a local variable map is represented as an array of localVars*2 elements, containing a pair (nameIndex, typeIndex) for each local variable; a pair (0,0) indicates there is no information for that local variable at that offset

Throws:

InvalidClassFileException

IllegalArgumentException