com.google.inject.util
Class LineNumbers

java.lang.Object
  com.google.inject.util.LineNumbers

public class LineNumbers
extends java.lang.Object

Looks up line numbers for classes and their members.

Author:

Chris Nokleberg

Constructor Summary

LineNumbers(java.lang.Class cls)
Reads line number information from the given class, if available.

Method Summary

int	getFirstLine() Gets the first line number.
java.lang.Integer	getLineNumber(java.lang.reflect.Member member) Get the line number associated with the given member.
java.lang.String	getSource() Get the source file name as read from the bytecode.

Methods inherited from class java.lang.Object

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

Constructor Detail

LineNumbers

public LineNumbers(java.lang.Class cls)
            throws java.io.IOException

Reads line number information from the given class, if available.

Parameters:

cls - the class to read line number information from

Throws:

java.lang.IllegalArgumentException - if the bytecode for the class cannot be found

java.io.IOException - if an error occurs while reading bytecode

Method Detail

getSource

public java.lang.String getSource()

Get the source file name as read from the bytecode.

Returns:

the source file name if available, or null

getLineNumber

public java.lang.Integer getLineNumber(java.lang.reflect.Member member)

Get the line number associated with the given member.

Parameters:

member - a field, constructor, or method belonging to the class used during construction

Returns:

the wrapped line number, or null if not available

Throws:

java.lang.IllegalArgumentException - if the member does not belong to the class used during construction

getFirstLine

public int getFirstLine()

Gets the first line number.