de.matthias_burbach.util
Class Node

java.lang.Object
  de.matthias_burbach.util.Node

class Node

extends java.lang.Object

Private helper class for Diff. The symbol table routines in this class all understand the symbol table format, which is a binary tree. The methods are: addSymbol, symbolIsUnique, showSymbol.

Field Summary

(package private) static int	bothonce
(package private) static int	freshnode
(package private) java.lang.String	line
(package private) int	linenum
(package private) int	linestate
(package private) static int	newonce
(package private) static int	oldonce
(package private) static int	other
(package private) static Node	panchor
(package private) Node	pleft
(package private) Node	pright

Constructor Summary

(package private)

Node(java.lang.String pline) Construct a new symbol table node and fill in its fields.

Method Summary

(package private) static Node	addSymbol(java.lang.String pline, boolean inoldfile, int linenum) addSymbol(String pline) - Saves line into the symbol table.
(package private) static Node	matchsymbol(java.lang.String pline) matchsymbol Searches tree for a match to the line.
(package private) void	showSymbol(java.io.PrintWriter printWriter) showSymbol Prints the line to stdout.
(package private) boolean	symbolIsUnique() symbolIsUnique Arg is a ptr previously returned by addSymbol. -------------- Returns true if the line was added to the symbol table exactly once with inoldfile true, and exactly once with inoldfile false.

Methods inherited from class java.lang.Object

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

Field Detail

pleft

Node pleft

pright

Node pright

linenum

int linenum

freshnode

static final int freshnode

See Also:

Constant Field Values

oldonce

static final int oldonce

See Also:

Constant Field Values

newonce

static final int newonce

See Also:

Constant Field Values

bothonce

static final int bothonce

See Also:

Constant Field Values

other

static final int other

See Also:

Constant Field Values

linestate

int linestate

line

java.lang.String line

panchor

static Node panchor

Constructor Detail

Node

Node(java.lang.String pline)

Construct a new symbol table node and fill in its fields.

Method Detail

matchsymbol

static Node matchsymbol(java.lang.String pline)

matchsymbol Searches tree for a match to the line.

addSymbol

static Node addSymbol(java.lang.String pline,
                      boolean inoldfile,
                      int linenum)

addSymbol(String pline) - Saves line into the symbol table. Returns a handle to the symtab entry for that unique line. If inoldfile nonzero, then linenum is remembered.

symbolIsUnique

boolean symbolIsUnique()

symbolIsUnique Arg is a ptr previously returned by addSymbol. -------------- Returns true if the line was added to the symbol table exactly once with inoldfile true, and exactly once with inoldfile false.

showSymbol

void showSymbol(java.io.PrintWriter printWriter)

showSymbol Prints the line to stdout.