org.apache.tools.ant

Class Location

java.lang.Object

org.apache.tools.ant.Location

All Implemented Interfaces:

Serializable

public class Location
extends Object
implements Serializable

Stores the location of a piece of text within a file (file name, line number and column number). Note that the column number is currently ignored.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static Location	UNKNOWN_LOCATION Location to use when one is needed but no information is available

Constructor Summary

Constructors

Constructor and Description
Location(org.xml.sax.Locator loc) Creates a location from the SAX locator using the system ID as the filename.
Location(String fileName) Creates a location consisting of a file name but no line number or column number.
Location(String fileName, int lineNumber, int columnNumber) Creates a location consisting of a file name, line number and column number.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object other) Equality operation.
int	getColumnNumber()
String	getFileName()
int	getLineNumber()
int	hashCode() Hash operation.
String	toString() Returns the file name, line number, a colon and a trailing space.

Methods inherited from class java.lang.Object

clone, getClass, notify, notifyAll, wait, wait, wait

Field Detail

UNKNOWN_LOCATION

public static final Location UNKNOWN_LOCATION

Location to use when one is needed but no information is available

Constructor Detail

Location

public Location(org.xml.sax.Locator loc)

Creates a location from the SAX locator using the system ID as the filename.

Parameters:

loc - Must not be null.

Since:

Ant 1.6

Location

public Location(String fileName)

Creates a location consisting of a file name but no line number or column number.

Parameters:

fileName - The name of the file. May be null, in which case the location is equivalent to UNKNOWN_LOCATION.

Location

public Location(String fileName,
                int lineNumber,
                int columnNumber)

Creates a location consisting of a file name, line number and column number.

Parameters:

fileName - The name of the file. May be null, in which case the location is equivalent to UNKNOWN_LOCATION.

lineNumber - Line number within the file. Use 0 for unknown positions within a file.

columnNumber - Column number within the line.

Method Detail

equals

public boolean equals(Object other)

Equality operation.

Overrides:

equals in class Object

Parameters:

other - the object to compare to.

Returns:

true if the other object contains the same information as this object.

Since:

Ant 1.6.3

See Also:

Object.hashCode(), HashMap

getColumnNumber

public int getColumnNumber()

Returns:

the column number

Since:

Ant 1.7

getFileName

public String getFileName()

Returns:

the filename portion of the location

Since:

Ant 1.6

getLineNumber

public int getLineNumber()

Returns:

the line number

Since:

Ant 1.6

hashCode

public int hashCode()

Hash operation.

Overrides:

hashCode in class Object

Returns:

a hash code value for this location.

Since:

Ant 1.6.3

See Also:

Object.equals(java.lang.Object), System.identityHashCode(java.lang.Object)

toString

public String toString()

Returns the file name, line number, a colon and a trailing space. An error message can be appended easily. For unknown locations, an empty string is returned.

Overrides:

toString in class Object

Returns:

a String of the form "fileName:lineNumber: " if both file name and line number are known, "fileName: " if only the file name is known, and the empty string for unknown locations.