edu.rice.cs.cunit.classFile.code.instructions
Class LineNumberTable

java.lang.Object
  edu.rice.cs.cunit.classFile.code.instructions.LineNumberTable

public class LineNumberTable
extends java.lang.Object

A table that relates PC values to line numbers.

Author:

Mathias Ricken

Field Summary

(package private) java.util.Hashtable<java.lang.Integer,java.lang.Integer>	_lineNumberToPC Hash table to convert from line numbers to PCs.
(package private) int	_maxLineNo Line number value just after the last instruction.
(package private) int	_maxPC PC value just after the last instruction.
(package private) java.util.Hashtable<java.lang.Integer,java.lang.Integer>	_pcToLineNumber Hash table to convert from PC to line numbers.

Constructor Summary

LineNumberTable(byte[] bytecode)
Create the line number table from bytecode.

LineNumberTable(InstructionList ilist)
Create a line number table from a list of instructions.

LineNumberTable(java.util.LinkedList<AInstruction> instrList)
Create a line number table from a list of instructions.

Method Summary

int	getLineNumber(int pc) Get the line number from the PC.
int	getPC(int lineNo) Get the PC from the line number.
protected void	put(int pc, int lineNo) Put this PC-line number pair into the hash tables.

Methods inherited from class java.lang.Object

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

Field Detail

_pcToLineNumber

java.util.Hashtable<java.lang.Integer,java.lang.Integer> _pcToLineNumber

Hash table to convert from PC to line numbers.

_lineNumberToPC

java.util.Hashtable<java.lang.Integer,java.lang.Integer> _lineNumberToPC

Hash table to convert from line numbers to PCs.

_maxPC

int _maxPC

PC value just after the last instruction.

_maxLineNo

int _maxLineNo

Line number value just after the last instruction.

Constructor Detail

LineNumberTable

public LineNumberTable(byte[] bytecode)

Create the line number table from bytecode.

Parameters:

bytecode - bytecode

LineNumberTable

public LineNumberTable(java.util.LinkedList<AInstruction> instrList)

Create a line number table from a list of instructions.

Parameters:

instrList - list of instructions

LineNumberTable

public LineNumberTable(InstructionList ilist)

Create a line number table from a list of instructions.

Parameters:

ilist - list of instructions

Method Detail

put

protected void put(int pc,
                   int lineNo)

Put this PC-line number pair into the hash tables.

Parameters:

pc - PC value

lineNo - line number

getLineNumber

public int getLineNumber(int pc)
                  throws java.util.NoSuchElementException

Get the line number from the PC.

Parameters:

pc - program counter

Returns:

line number

Throws:

java.util.NoSuchElementException

getPC

public int getPC(int lineNo)
          throws java.util.NoSuchElementException

Get the PC from the line number.

Parameters:

lineNo - line number

Returns:

program counter

Throws:

java.util.NoSuchElementException