Modifier and Type	Class and Description
public static interface	Position.LineMap
pack-priv static class	Position.LineMapImpl
public static class	Position.LineTabMapImpl A LineMap that handles tab expansion correctly.

Modifier and Type	Field and Description
public static final int	FIRSTCOLUMN
public static final int	FIRSTLINE
public static final int	FIRSTPOS
public static final int	LINESHIFT
public static final int	MAXCOLUMN
public static final int	MAXLINE
public static final int	MAXPOS
public static final int	NOPOS

Access	Constructor and Description
private	Position() This is class is not supposed to be instantiated.

Modifier and Type	Method and Description
public static int	Returns: an encoded position or `Position#NOPOS` if the line or column number is too big to represent in the encoded format encodePosition(int number of line (first is 1) line, int number of character on line (first is 1) col) Encode line and column numbers in an integer as: `line-number << LINESHIFT + column-number` .
public static Position.LineMap	makeLineMap(char[] Source characters src, int Number of characters to read max, boolean If true, expand tabs when calculating columns expandTabs) A two-way map between line/column numbers and positions, derived from a scan done at creation time.

FIRSTCOLUMN	back to summary
public static final int FIRSTCOLUMN

FIRSTLINE	back to summary
public static final int FIRSTLINE

FIRSTPOS	back to summary
public static final int FIRSTPOS

LINESHIFT	back to summary
public static final int LINESHIFT

MAXCOLUMN	back to summary
public static final int MAXCOLUMN

MAXLINE	back to summary
public static final int MAXLINE

MAXPOS	back to summary
public static final int MAXPOS

NOPOS	back to summary
public static final int NOPOS

Position	back to summary
private Position() This is class is not supposed to be instantiated.

Method Detail

encodePosition back to summary

encodePosition	back to summary
public static int encodePosition(int line, int col) Encode line and column numbers in an integer as: `line-number << LINESHIFT + column-number` . `Position#NOPOS` represents an undefined position. Parameters line:int number of line (first is 1) col:int number of character on line (first is 1) Returns:int an encoded position or `Position#NOPOS` if the line or column number is too big to represent in the encoded format Exceptions IllegalArgumentException: if line or col is less than 1

public static int encodePosition(int line, int col)

Encode line and column numbers in an integer as: line-number << LINESHIFT + column-number . Position#NOPOS represents an undefined position.

Parameters

line:int: number of line (first is 1)
col:int: number of character on line (first is 1)

Returns:int

an encoded position or Position#NOPOS if the line or column number is too big to represent in the encoded format

Exceptions

IllegalArgumentException:: if line or col is less than 1

makeLineMap	back to summary
public static Position.LineMap makeLineMap(char[] src, int max, boolean expandTabs) A two-way map between line/column numbers and positions, derived from a scan done at creation time. Tab expansion is optionally supported via a character map. Text content is not retained. Notes The first character position FIRSTPOS is at (FIRSTLINE,FIRSTCOLUMN). No account is taken of Unicode escapes. Parameters src:char[] Source characters max:int Number of characters to read expandTabs:boolean If true, expand tabs when calculating columns

makeLineMap

back to summary

public static Position.LineMap makeLineMap(char[] src, int max, boolean expandTabs)

A two-way map between line/column numbers and positions, derived from a scan done at creation time. Tab expansion is optionally supported via a character map. Text content is not retained.

Notes

The first character position FIRSTPOS is at (FIRSTLINE,FIRSTCOLUMN). No account is taken of Unicode escapes.

Parameters

src:char[]: Source characters
max:int: Number of characters to read
expandTabs:boolean: If true, expand tabs when calculating columns

com.sun.tools.javac.util back to summary

public Interface Position.LineMap

Known Direct Implementers: com.sun.tools.javac.util.Position.LineMapImpl

Method Summary

Modifier and Type	Method and Description
public int	Returns: the column number at which pos occurs getColumnNumber(int character offset of the position pos) Find the column for a character position.
public int	Returns: the line number on which pos occurs (first line is 1) getLineNumber(int character offset of the position pos) Find the line containing a position; a line termination character is on the line it terminates.
public int	Returns: position of character getPosition(int number of line (first is 1) line, int number of character on line (first is 1) column) Find the position corresponding to a (line,column).
public int	Returns: position of first character in line getStartPosition(int number of line (first is 1) line) Find the start position of a line.

Inherited from com.sun.source.tree.LineMap:: getColumnNumber getLineNumber getPosition getStartPosition

Method Detail

getColumnNumber	back to summary
public int getColumnNumber(int pos) Find the column for a character position. Note this method does not handle tab expansion. If tab expansion is needed, use a LineTabMap instead. Parameters pos:int character offset of the position Returns:int the column number at which pos occurs

getColumnNumber

back to summary

public int getColumnNumber(int pos)

Find the column for a character position.

Note

this method does not handle tab expansion. If tab expansion is needed, use a LineTabMap instead.

Parameters

pos:int: character offset of the position

Returns:int

the column number at which pos occurs

getLineNumber	back to summary
public int getLineNumber(int pos) Find the line containing a position; a line termination character is on the line it terminates. Parameters pos:int character offset of the position Returns:int the line number on which pos occurs (first line is 1)

getLineNumber

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public int getLineNumber(int pos)

Find the line containing a position; a line termination character is on the line it terminates.

Parameters

pos:int: character offset of the position

Returns:int

the line number on which pos occurs (first line is 1)

getPosition back to summary

getPosition	back to summary
public int getPosition(int line, int column) Find the position corresponding to a (line,column). Parameters line:int number of line (first is 1) column:int number of character on line (first is 1) Returns:int position of character Exceptions ArrayIndexOutOfBoundsException: if `line < 1` if `line > no. of lines`

public int getPosition(int line, int column)

Find the position corresponding to a (line,column).

Parameters

line:int: number of line (first is 1)
column:int: number of character on line (first is 1)

Returns:int

position of character

Exceptions

ArrayIndexOutOfBoundsException:: if line < 1 if line > no. of lines

getStartPosition back to summary

getStartPosition	back to summary
public int getStartPosition(int line) Find the start position of a line. Parameters line:int number of line (first is 1) Returns:int position of first character in line Exceptions ArrayIndexOutOfBoundsException: if `lineNumber < 1` if `lineNumber > no. of lines`

public int getStartPosition(int line)

Find the start position of a line.

Parameters

line:int: number of line (first is 1)

Returns:int

position of first character in line

Exceptions

ArrayIndexOutOfBoundsException:: if lineNumber < 1 if lineNumber > no. of lines

com.sun.tools.javac.util back to summary

pack-priv Class Position.LineMapImpl

Class Inheritance

extends Object
implements LineMap

java.lang.Object
com.sun.tools.javac.util.Position.LineMapImpl

All Implemented Interfaces

com.sun.tools.javac.util.Position.LineMap, com.sun.source.tree.LineMap

Known Direct Subclasses

com.sun.tools.javac.util.Position.LineTabMapImpl

Field Summary

Modifier and Type	Field and Description
private int	lastLine
private int	lastPosition
protected int[]	startPosition

Constructor Summary

Access	Constructor and Description
protected	LineMapImpl()

Method Summary

Modifier and Type	Method and Description
protected void	build(char[] src, int max)
public int	getColumnNumber(int pos) Implements com.sun.tools.javac.util.Position.LineMap.getColumnNumber. Find the column for a character position.
public long	getColumnNumber(long pos) Implements com.sun.source.tree.LineMap.getColumnNumber. Finds the column for a character position.
public int	getLineNumber(int pos) Implements com.sun.tools.javac.util.Position.LineMap.getLineNumber. Find the line containing a position; a line termination character is on the line it terminates.
public long	getLineNumber(long pos) Implements com.sun.source.tree.LineMap.getLineNumber. Finds the line containing a position; a line termination character is on the line it terminates.
public int	getPosition(int line, int column) Implements com.sun.tools.javac.util.Position.LineMap.getPosition. Find the position corresponding to a (line,column).
public long	getPosition(long line, long column) Implements com.sun.source.tree.LineMap.getPosition. Finds the position corresponding to a (line,column).
public int	getStartPosition(int line) Implements com.sun.tools.javac.util.Position.LineMap.getStartPosition. Find the start position of a line.
public long	getStartPosition(long line) Implements com.sun.source.tree.LineMap.getStartPosition. Finds the start position of a line.
private static int	longToInt(long longValue)
protected void	setTabPosition(int offset)

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

lastLine	back to summary
private int lastLine

lastPosition	back to summary
private int lastPosition

startPosition	back to summary
protected int[] startPosition

Constructor Detail

LineMapImpl	back to summary
protected LineMapImpl()

Method Detail

build	back to summary
protected void build(char[] src, int max)

getColumnNumber	back to summary
public int getColumnNumber(int pos) Implements com.sun.tools.javac.util.Position.LineMap.getColumnNumber. Doc from com.sun.tools.javac.util.Position.LineMap.getColumnNumber. Find the column for a character position. Note this method does not handle tab expansion. If tab expansion is needed, use a LineTabMap instead.

getColumnNumber

back to summary

public int getColumnNumber(int pos)

Implements com.sun.tools.javac.util.Position.LineMap.getColumnNumber.

Doc from com.sun.tools.javac.util.Position.LineMap.getColumnNumber.

Find the column for a character position.

Note

this method does not handle tab expansion. If tab expansion is needed, use a LineTabMap instead.

getColumnNumber	back to summary
public long getColumnNumber(long pos) Implements com.sun.source.tree.LineMap.getColumnNumber. Doc from com.sun.source.tree.LineMap.getColumnNumber. Finds the column for a character position. Tab characters preceding the position on the same line will be expanded when calculating the column number. Annotations @DefinedBy:COMPILER_TREE

getColumnNumber

back to summary

public long getColumnNumber(long pos)

Implements com.sun.source.tree.LineMap.getColumnNumber.

Doc from com.sun.source.tree.LineMap.getColumnNumber.

Finds the column for a character position. Tab characters preceding the position on the same line will be expanded when calculating the column number.

Annotations

@DefinedBy:COMPILER_TREE

getLineNumber	back to summary
public int getLineNumber(int pos) Implements com.sun.tools.javac.util.Position.LineMap.getLineNumber. Doc from com.sun.tools.javac.util.Position.LineMap.getLineNumber. Find the line containing a position; a line termination character is on the line it terminates.

getLineNumber

back to summary

public int getLineNumber(int pos)

Implements com.sun.tools.javac.util.Position.LineMap.getLineNumber.

Doc from com.sun.tools.javac.util.Position.LineMap.getLineNumber.

Find the line containing a position; a line termination character is on the line it terminates.

getLineNumber	back to summary
public long getLineNumber(long pos) Implements com.sun.source.tree.LineMap.getLineNumber. Doc from com.sun.source.tree.LineMap.getLineNumber. Finds the line containing a position; a line termination character is on the line it terminates. Annotations @DefinedBy:COMPILER_TREE

getLineNumber

back to summary

public long getLineNumber(long pos)

Implements com.sun.source.tree.LineMap.getLineNumber.

Doc from com.sun.source.tree.LineMap.getLineNumber.

Finds the line containing a position; a line termination character is on the line it terminates.

Annotations

@DefinedBy:COMPILER_TREE

getPosition	back to summary
public int getPosition(int line, int column) Implements com.sun.tools.javac.util.Position.LineMap.getPosition. Doc from com.sun.tools.javac.util.Position.LineMap.getPosition. Find the position corresponding to a (line,column).

getPosition

back to summary

public int getPosition(int line, int column)

Implements com.sun.tools.javac.util.Position.LineMap.getPosition.

Doc from com.sun.tools.javac.util.Position.LineMap.getPosition.

Find the position corresponding to a (line,column).

getPosition	back to summary
public long getPosition(long line, long column) Implements com.sun.source.tree.LineMap.getPosition. Doc from com.sun.source.tree.LineMap.getPosition. Finds the position corresponding to a (line,column). Annotations @DefinedBy:COMPILER_TREE

getPosition

back to summary

public long getPosition(long line, long column)

Implements com.sun.source.tree.LineMap.getPosition.

Doc from com.sun.source.tree.LineMap.getPosition.

Finds the position corresponding to a (line,column).

Annotations

@DefinedBy:COMPILER_TREE

getStartPosition	back to summary
public int getStartPosition(int line) Implements com.sun.tools.javac.util.Position.LineMap.getStartPosition. Doc from com.sun.tools.javac.util.Position.LineMap.getStartPosition. Find the start position of a line.

getStartPosition

back to summary

public int getStartPosition(int line)

Implements com.sun.tools.javac.util.Position.LineMap.getStartPosition.

Doc from com.sun.tools.javac.util.Position.LineMap.getStartPosition.

Find the start position of a line.

getStartPosition	back to summary
public long getStartPosition(long line) Implements com.sun.source.tree.LineMap.getStartPosition. Doc from com.sun.source.tree.LineMap.getStartPosition. Finds the start position of a line. Annotations @DefinedBy:COMPILER_TREE

getStartPosition

back to summary

public long getStartPosition(long line)

Implements com.sun.source.tree.LineMap.getStartPosition.

Doc from com.sun.source.tree.LineMap.getStartPosition.

Finds the start position of a line.

Annotations

@DefinedBy:COMPILER_TREE

longToInt	back to summary
private static int longToInt(long longValue)

setTabPosition	back to summary
protected void setTabPosition(int offset)

com.sun.tools.javac.util back to summary

public Class Position.LineTabMapImpl

Class Inheritance

extends LineMapImpl

java.lang.Object
com.sun.tools.javac.util.Position.LineMapImpl
com.sun.tools.javac.util.Position.LineTabMapImpl

A LineMap that handles tab expansion correctly. The cost is an additional bit per character in the source array.

Field Summary

Modifier and Type	Field and Description
private BitSet	tabMap

Inherited from com.sun.tools.javac.util.Position.LineMapImpl:: startPosition

Constructor Summary

Access	Constructor and Description
public	LineTabMapImpl(int max)

Method Summary

Modifier and Type	Method and Description
public int	getColumnNumber(int pos) Overrides com.sun.tools.javac.util.Position.LineMapImpl.getColumnNumber. Implements com.sun.tools.javac.util.Position.LineMap.getColumnNumber. Find the column for a character position.
public int	getPosition(int line, int column) Overrides com.sun.tools.javac.util.Position.LineMapImpl.getPosition. Implements com.sun.tools.javac.util.Position.LineMap.getPosition. Find the position corresponding to a (line,column).
protected void	setTabPosition(int offset) Overrides com.sun.tools.javac.util.Position.LineMapImpl.setTabPosition.

Inherited from com.sun.tools.javac.util.Position.LineMapImpl:: build getColumnNumber getLineNumber getLineNumber getPosition getStartPosition getStartPosition

Field Detail

tabMap	back to summary
private BitSet tabMap

Constructor Detail

LineTabMapImpl	back to summary
public LineTabMapImpl(int max)

Method Detail

getColumnNumber	back to summary
public int getColumnNumber(int pos) Overrides com.sun.tools.javac.util.Position.LineMapImpl.getColumnNumber. Implements com.sun.tools.javac.util.Position.LineMap.getColumnNumber. Doc from com.sun.tools.javac.util.Position.LineMap.getColumnNumber. Find the column for a character position. Note this method does not handle tab expansion. If tab expansion is needed, use a LineTabMap instead.

getColumnNumber

back to summary

public int getColumnNumber(int pos)

Overrides com.sun.tools.javac.util.Position.LineMapImpl.getColumnNumber.

Implements com.sun.tools.javac.util.Position.LineMap.getColumnNumber.

Doc from com.sun.tools.javac.util.Position.LineMap.getColumnNumber.

Find the column for a character position.

Note

this method does not handle tab expansion. If tab expansion is needed, use a LineTabMap instead.

getPosition	back to summary
public int getPosition(int line, int column) Overrides com.sun.tools.javac.util.Position.LineMapImpl.getPosition. Implements com.sun.tools.javac.util.Position.LineMap.getPosition. Doc from com.sun.tools.javac.util.Position.LineMap.getPosition. Find the position corresponding to a (line,column).

getPosition

back to summary

public int getPosition(int line, int column)

Overrides com.sun.tools.javac.util.Position.LineMapImpl.getPosition.

Implements com.sun.tools.javac.util.Position.LineMap.getPosition.

Doc from com.sun.tools.javac.util.Position.LineMap.getPosition.

Find the position corresponding to a (line,column).

setTabPosition	back to summary
protected void setTabPosition(int offset) Overrides com.sun.tools.javac.util.Position.LineMapImpl.setTabPosition.

public Class Position

Nested and Inner Type Summary

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail

public Interface Position.LineMap

Method Summary

Method Detail

pack-priv Class Position.LineMapImpl

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail

public Class Position.LineTabMapImpl

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail