Source Code Cross Referenced for TreeVisitor.java in  » Database-DBMS » db4o-6.4 » EDU » purdue » cs » bloat » tree » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database DBMS » db4o 6.4 » EDU.purdue.cs.bloat.tree 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /* Copyright (C) 2004 - 2007  db4objects Inc.  http://www.db4o.com
002:
003:        This file is part of the db4o open source object database.
004:
005:        db4o is free software; you can redistribute it and/or modify it under
006:        the terms of version 2 of the GNU General Public License as published
007:        by the Free Software Foundation and as clarified by db4objects' GPL 
008:        interpretation policy, available at
009:        http://www.db4o.com/about/company/legalpolicies/gplinterpretation/
010:        Alternatively you can write to db4objects, Inc., 1900 S Norfolk Street,
011:        Suite 350, San Mateo, CA 94403, USA.
012:
013:        db4o is distributed in the hope that it will be useful, but WITHOUT ANY
014:        WARRANTY; without even the implied warranty of MERCHANTABILITY or
015:        FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
016:        for more details.
017:
018:        You should have received a copy of the GNU General Public License along
019:        with this program; if not, write to the Free Software Foundation, Inc.,
020:        59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. */
021:        package EDU.purdue.cs.bloat.tree;
022:
023:        import EDU.purdue.cs.bloat.cfg.*;
024:
025:        /**
026:         * TreeVisitor performs a traversal of a tree. It does so by having a method of
027:         * every kind of node in the tree. This abstract class performs default
028:         * operations for each kind of node visited. It must be subclasses to perform a
029:         * more interesting traversal.
030:         * 
031:         * @see Node
032:         * @see Tree
033:         * 
034:         * @see PrintVisitor
035:         * @see ReplaceVisitor
036:         * 
037:         */
038:        public abstract class TreeVisitor {
039:            public static final int FORWARD = 0;
040:
041:            public static final int REVERSE = 1;
042:
043:            boolean prune;
044:
045:            int direction;
046:
047:            public TreeVisitor() {
048:                this (TreeVisitor.FORWARD);
049:            }
050:
051:            public TreeVisitor(final int direction) {
052:                this .direction = direction;
053:            }
054:
055:            /**
056:             * @param prune
057:             *            Is the tree pruned during traversal?
058:             */
059:            public void setPrune(final boolean prune) {
060:                this .prune = prune;
061:            }
062:
063:            public boolean prune() {
064:                return prune;
065:            }
066:
067:            /**
068:             * @return The direction in which the tree is traversed.
069:             */
070:            public int direction() {
071:                return direction;
072:            }
073:
074:            /**
075:             * Returns <tt>true</tt> if the traversal traverses in the forward
076:             * direction?
077:             */
078:            public boolean forward() {
079:                return direction == TreeVisitor.FORWARD;
080:            }
081:
082:            public boolean reverse() {
083:                return direction == TreeVisitor.REVERSE;
084:            }
085:
086:            public void visitFlowGraph(final FlowGraph graph) {
087:                graph.visitChildren(this );
088:            }
089:
090:            public void visitBlock(final Block block) {
091:                block.visitChildren(this );
092:            }
093:
094:            public void visitTree(final Tree tree) {
095:                visitNode(tree);
096:            }
097:
098:            public void visitExprStmt(final ExprStmt stmt) {
099:                visitStmt(stmt);
100:            }
101:
102:            public void visitIfStmt(final IfStmt stmt) {
103:                visitStmt(stmt);
104:            }
105:
106:            public void visitIfCmpStmt(final IfCmpStmt stmt) {
107:                visitIfStmt(stmt);
108:            }
109:
110:            public void visitIfZeroStmt(final IfZeroStmt stmt) {
111:                visitIfStmt(stmt);
112:            }
113:
114:            public void visitInitStmt(final InitStmt stmt) {
115:                visitStmt(stmt);
116:            }
117:
118:            public void visitGotoStmt(final GotoStmt stmt) {
119:                visitStmt(stmt);
120:            }
121:
122:            public void visitLabelStmt(final LabelStmt stmt) {
123:                visitStmt(stmt);
124:            }
125:
126:            public void visitMonitorStmt(final MonitorStmt stmt) {
127:                visitStmt(stmt);
128:            }
129:
130:            public void visitPhiStmt(final PhiStmt stmt) {
131:                visitStmt(stmt);
132:            }
133:
134:            public void visitCatchExpr(final CatchExpr expr) {
135:                visitExpr(expr);
136:            }
137:
138:            public void visitDefExpr(final DefExpr expr) {
139:                visitExpr(expr);
140:            }
141:
142:            public void visitStackManipStmt(final StackManipStmt stmt) {
143:                visitStmt(stmt);
144:            }
145:
146:            public void visitPhiCatchStmt(final PhiCatchStmt stmt) {
147:                visitPhiStmt(stmt);
148:            }
149:
150:            public void visitPhiJoinStmt(final PhiJoinStmt stmt) {
151:                visitPhiStmt(stmt);
152:            }
153:
154:            public void visitRetStmt(final RetStmt stmt) {
155:                visitStmt(stmt);
156:            }
157:
158:            public void visitReturnExprStmt(final ReturnExprStmt stmt) {
159:                visitStmt(stmt);
160:            }
161:
162:            public void visitReturnStmt(final ReturnStmt stmt) {
163:                visitStmt(stmt);
164:            }
165:
166:            public void visitAddressStoreStmt(final AddressStoreStmt stmt) {
167:                visitStmt(stmt);
168:            }
169:
170:            public void visitStoreExpr(final StoreExpr expr) {
171:                visitExpr(expr);
172:            }
173:
174:            public void visitJsrStmt(final JsrStmt stmt) {
175:                visitStmt(stmt);
176:            }
177:
178:            public void visitSwitchStmt(final SwitchStmt stmt) {
179:                visitStmt(stmt);
180:            }
181:
182:            public void visitThrowStmt(final ThrowStmt stmt) {
183:                visitStmt(stmt);
184:            }
185:
186:            public void visitStmt(final Stmt stmt) {
187:                visitNode(stmt);
188:            }
189:
190:            public void visitSCStmt(final SCStmt stmt) {
191:                visitStmt(stmt);
192:            }
193:
194:            public void visitSRStmt(final SRStmt stmt) {
195:                visitStmt(stmt);
196:            }
197:
198:            public void visitArithExpr(final ArithExpr expr) {
199:                visitExpr(expr);
200:            }
201:
202:            public void visitArrayLengthExpr(final ArrayLengthExpr expr) {
203:                visitExpr(expr);
204:            }
205:
206:            public void visitMemExpr(final MemExpr expr) {
207:                visitDefExpr(expr);
208:            }
209:
210:            public void visitMemRefExpr(final MemRefExpr expr) {
211:                visitMemExpr(expr);
212:            }
213:
214:            public void visitArrayRefExpr(final ArrayRefExpr expr) {
215:                visitMemRefExpr(expr);
216:            }
217:
218:            public void visitCallExpr(final CallExpr expr) {
219:                visitExpr(expr);
220:            }
221:
222:            public void visitCallMethodExpr(final CallMethodExpr expr) {
223:                visitCallExpr(expr);
224:            }
225:
226:            public void visitCallStaticExpr(final CallStaticExpr expr) {
227:                visitCallExpr(expr);
228:            }
229:
230:            public void visitCastExpr(final CastExpr expr) {
231:                visitExpr(expr);
232:            }
233:
234:            public void visitConstantExpr(final ConstantExpr expr) {
235:                visitExpr(expr);
236:            }
237:
238:            public void visitFieldExpr(final FieldExpr expr) {
239:                visitMemRefExpr(expr);
240:            }
241:
242:            public void visitInstanceOfExpr(final InstanceOfExpr expr) {
243:                visitExpr(expr);
244:            }
245:
246:            public void visitLocalExpr(final LocalExpr expr) {
247:                visitVarExpr(expr);
248:            }
249:
250:            public void visitNegExpr(final NegExpr expr) {
251:                visitExpr(expr);
252:            }
253:
254:            public void visitNewArrayExpr(final NewArrayExpr expr) {
255:                visitExpr(expr);
256:            }
257:
258:            public void visitNewExpr(final NewExpr expr) {
259:                visitExpr(expr);
260:            }
261:
262:            public void visitNewMultiArrayExpr(final NewMultiArrayExpr expr) {
263:                visitExpr(expr);
264:            }
265:
266:            public void visitCheckExpr(final CheckExpr expr) {
267:                visitExpr(expr);
268:            }
269:
270:            public void visitZeroCheckExpr(final ZeroCheckExpr expr) {
271:                visitCheckExpr(expr);
272:            }
273:
274:            public void visitRCExpr(final RCExpr expr) {
275:                visitCheckExpr(expr);
276:            }
277:
278:            public void visitUCExpr(final UCExpr expr) {
279:                visitCheckExpr(expr);
280:            }
281:
282:            public void visitReturnAddressExpr(final ReturnAddressExpr expr) {
283:                visitExpr(expr);
284:            }
285:
286:            public void visitShiftExpr(final ShiftExpr expr) {
287:                visitExpr(expr);
288:            }
289:
290:            public void visitStackExpr(final StackExpr expr) {
291:                visitVarExpr(expr);
292:            }
293:
294:            public void visitVarExpr(final VarExpr expr) {
295:                visitMemExpr(expr);
296:            }
297:
298:            public void visitStaticFieldExpr(final StaticFieldExpr expr) {
299:                visitMemRefExpr(expr);
300:            }
301:
302:            public void visitExpr(final Expr expr) {
303:                visitNode(expr);
304:            }
305:
306:            public void visitNode(final Node node) {
307:                node.visitChildren(this);
308:            }
309:        }
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