Package javassist.bytecode

Class LineNumberAttribute

java.lang.Object

javassist.bytecode.AttributeInfo

javassist.bytecode.LineNumberAttribute

public class LineNumberAttribute
extends AttributeInfo

LineNumberTable_attribute.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	LineNumberAttribute.Pc	Used as a return type of toNearPc().

Field Summary

Fields

Modifier and Type	Field	Description
static final String	tag	The name of this attribute "LineNumberTable".

Method Summary

Modifier and Type	Method	Description
AttributeInfo	copy(ConstPool newCp, Map<String,String> classnames)	Makes a copy.
int	lineNumber(int i)	Returns line_number_table[i].line_number.
int	startPc(int i)	Returns line_number_table[i].start_pc.
int	tableLength()	Returns line_number_table_length.
int	toLineNumber(int pc)	Returns the line number corresponding to the specified bytecode.
LineNumberAttribute.Pc	toNearPc(int line)	Returns the index into the code array at which the code for the specified line (or the nearest line after the specified one) begins.
int	toStartPc(int line)	Returns the index into the code array at which the code for the specified line begins.

Methods inherited from class javassist.bytecode.AttributeInfo

get, getConstPool, getName, length, set

Methods inherited from class java.lang.Object

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

Field Details

tag

public static final String tag

The name of this attribute "LineNumberTable".

See Also:

• Constant Field Values

Method Details

tableLength

public int tableLength()

Returns line_number_table_length. This represents the number of entries in the table.

startPc

public int startPc(int i)

Returns line_number_table[i].start_pc. This represents the index into the code array at which the code for a new line in the original source file begins.

Parameters:

i - the i-th entry.

lineNumber

public int lineNumber(int i)

Returns line_number_table[i].line_number. This represents the corresponding line number in the original source file.

Parameters:

i - the i-th entry.

toLineNumber

public int toLineNumber(int pc)

Returns the line number corresponding to the specified bytecode.

Parameters:

pc - the index into the code array.

toStartPc

public int toStartPc(int line)

Returns the index into the code array at which the code for the specified line begins.

Parameters:

line - the line number.

Returns:

-1 if the specified line is not found.

toNearPc

public LineNumberAttribute.Pc toNearPc(int line)

Returns the index into the code array at which the code for the specified line (or the nearest line after the specified one) begins.

Parameters:

line - the line number.

Returns:

a pair of the index and the line number of the bytecode at that index.

copy

public AttributeInfo copy(ConstPool newCp,
 Map<String,String> classnames)

Makes a copy.

Overrides:

copy in class AttributeInfo

Parameters:

newCp - the constant pool table used by the new copy.

classnames - should be null.