Package com.ibm.wala.shrike.shrikeCT

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 com.ibm.wala.shrike.shrikeCT.AttributeReader

attr, cr, 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 com.ibm.wala.shrike.shrikeCT.AttributeReader

checkSize, checkSizeEquals, getClassReader, getRawOffset, getRawSize

Methods inherited from class java.lang.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