01: /*
02: *******************************************************************************
03: * Copyright (C) 1998-2004, International Business Machines Corporation and *
04: * others. All Rights Reserved. *
05: *******************************************************************************
06: *
07: * Created on Dec 3, 2003
08: *
09: *******************************************************************************
10: */
11: package com.ibm.icu.dev.tool.layout;
12:
13: public abstract class TreeWalker {
14: abstract void down(int ch);
15:
16: abstract void up();
17:
18: abstract void ligature(int lig);
19:
20: abstract void done();
21: }
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