Source Code Cross Referenced for TreeScanner.java in  » 6.0-JDK-Modules-sun » javac-compiler » com » sun » tools » javac » tree » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » 6.0 JDK Modules sun » javac compiler » com.sun.tools.javac.tree 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Copyright 2001-2006 Sun Microsystems, Inc.  All Rights Reserved.
003:         * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004:         *
005:         * This code is free software; you can redistribute it and/or modify it
006:         * under the terms of the GNU General Public License version 2 only, as
007:         * published by the Free Software Foundation.  Sun designates this
008:         * particular file as subject to the "Classpath" exception as provided
009:         * by Sun in the LICENSE file that accompanied this code.
010:         *
011:         * This code is distributed in the hope that it will be useful, but WITHOUT
012:         * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
013:         * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
014:         * version 2 for more details (a copy is included in the LICENSE file that
015:         * accompanied this code).
016:         *
017:         * You should have received a copy of the GNU General Public License version
018:         * 2 along with this work; if not, write to the Free Software Foundation,
019:         * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
020:         *
021:         * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
022:         * CA 95054 USA or visit www.sun.com if you need additional information or
023:         * have any questions.
024:         */
025:
026:        package com.sun.tools.javac.tree;
027:
028:        import com.sun.tools.javac.util.*;
029:        import com.sun.tools.javac.tree.JCTree.*;
030:
031:        /** A subclass of Tree.Visitor, this class defines
032:         *  a general tree scanner pattern. Translation proceeds recursively in
033:         *  left-to-right order down a tree. There is one visitor method in this class
034:         *  for every possible kind of tree node.  To obtain a specific
035:         *  scanner, it suffices to override those visitor methods which
036:         *  do some interesting work. The scanner class itself takes care of all
037:         *  navigational aspects.
038:         *
039:         *  <p><b>This is NOT part of any API supported by Sun Microsystems.  If
040:         *  you write code that depends on this, you do so at your own risk.
041:         *  This code and its internal interfaces are subject to change or
042:         *  deletion without notice.</b>
043:         */
044:        @Version("@(#)TreeScanner.java	1.32 07/05/05")
045:        public class TreeScanner extends Visitor {
046:
047:            /** Visitor method: Scan a single node.
048:             */
049:            public void scan(JCTree tree) {
050:                if (tree != null)
051:                    tree.accept(this );
052:            }
053:
054:            /** Visitor method: scan a list of nodes.
055:             */
056:            public void scan(List<? extends JCTree> trees) {
057:                if (trees != null)
058:                    for (List<? extends JCTree> l = trees; l.nonEmpty(); l = l.tail)
059:                        scan(l.head);
060:            }
061:
062:            /* ***************************************************************************
063:             * Visitor methods
064:             ****************************************************************************/
065:
066:            public void visitTopLevel(JCCompilationUnit tree) {
067:                scan(tree.packageAnnotations);
068:                scan(tree.pid);
069:                scan(tree.defs);
070:            }
071:
072:            public void visitImport(JCImport tree) {
073:                scan(tree.qualid);
074:            }
075:
076:            public void visitClassDef(JCClassDecl tree) {
077:                scan(tree.mods);
078:                scan(tree.typarams);
079:                scan(tree.extending);
080:                scan(tree.implementing);
081:                scan(tree.defs);
082:            }
083:
084:            public void visitMethodDef(JCMethodDecl tree) {
085:                scan(tree.mods);
086:                scan(tree.restype);
087:                scan(tree.typarams);
088:                scan(tree.params);
089:                scan(tree.thrown);
090:                scan(tree.body);
091:            }
092:
093:            public void visitVarDef(JCVariableDecl tree) {
094:                scan(tree.mods);
095:                scan(tree.vartype);
096:                scan(tree.init);
097:            }
098:
099:            public void visitSkip(JCSkip tree) {
100:            }
101:
102:            public void visitBlock(JCBlock tree) {
103:                scan(tree.stats);
104:            }
105:
106:            public void visitDoLoop(JCDoWhileLoop tree) {
107:                scan(tree.body);
108:                scan(tree.cond);
109:            }
110:
111:            public void visitWhileLoop(JCWhileLoop tree) {
112:                scan(tree.cond);
113:                scan(tree.body);
114:            }
115:
116:            public void visitForLoop(JCForLoop tree) {
117:                scan(tree.init);
118:                scan(tree.cond);
119:                scan(tree.step);
120:                scan(tree.body);
121:            }
122:
123:            public void visitForeachLoop(JCEnhancedForLoop tree) {
124:                scan(tree.var);
125:                scan(tree.expr);
126:                scan(tree.body);
127:            }
128:
129:            public void visitLabelled(JCLabeledStatement tree) {
130:                scan(tree.body);
131:            }
132:
133:            public void visitSwitch(JCSwitch tree) {
134:                scan(tree.selector);
135:                scan(tree.cases);
136:            }
137:
138:            public void visitCase(JCCase tree) {
139:                scan(tree.pat);
140:                scan(tree.stats);
141:            }
142:
143:            public void visitSynchronized(JCSynchronized tree) {
144:                scan(tree.lock);
145:                scan(tree.body);
146:            }
147:
148:            public void visitTry(JCTry tree) {
149:                scan(tree.body);
150:                scan(tree.catchers);
151:                scan(tree.finalizer);
152:            }
153:
154:            public void visitCatch(JCCatch tree) {
155:                scan(tree.param);
156:                scan(tree.body);
157:            }
158:
159:            public void visitConditional(JCConditional tree) {
160:                scan(tree.cond);
161:                scan(tree.truepart);
162:                scan(tree.falsepart);
163:            }
164:
165:            public void visitIf(JCIf tree) {
166:                scan(tree.cond);
167:                scan(tree.thenpart);
168:                scan(tree.elsepart);
169:            }
170:
171:            public void visitExec(JCExpressionStatement tree) {
172:                scan(tree.expr);
173:            }
174:
175:            public void visitBreak(JCBreak tree) {
176:            }
177:
178:            public void visitContinue(JCContinue tree) {
179:            }
180:
181:            public void visitReturn(JCReturn tree) {
182:                scan(tree.expr);
183:            }
184:
185:            public void visitThrow(JCThrow tree) {
186:                scan(tree.expr);
187:            }
188:
189:            public void visitAssert(JCAssert tree) {
190:                scan(tree.cond);
191:                scan(tree.detail);
192:            }
193:
194:            public void visitApply(JCMethodInvocation tree) {
195:                scan(tree.meth);
196:                scan(tree.args);
197:            }
198:
199:            public void visitNewClass(JCNewClass tree) {
200:                scan(tree.encl);
201:                scan(tree.clazz);
202:                scan(tree.args);
203:                scan(tree.def);
204:            }
205:
206:            public void visitNewArray(JCNewArray tree) {
207:                scan(tree.elemtype);
208:                scan(tree.dims);
209:                scan(tree.elems);
210:            }
211:
212:            public void visitParens(JCParens tree) {
213:                scan(tree.expr);
214:            }
215:
216:            public void visitAssign(JCAssign tree) {
217:                scan(tree.lhs);
218:                scan(tree.rhs);
219:            }
220:
221:            public void visitAssignop(JCAssignOp tree) {
222:                scan(tree.lhs);
223:                scan(tree.rhs);
224:            }
225:
226:            public void visitUnary(JCUnary tree) {
227:                scan(tree.arg);
228:            }
229:
230:            public void visitBinary(JCBinary tree) {
231:                scan(tree.lhs);
232:                scan(tree.rhs);
233:            }
234:
235:            public void visitTypeCast(JCTypeCast tree) {
236:                scan(tree.clazz);
237:                scan(tree.expr);
238:            }
239:
240:            public void visitTypeTest(JCInstanceOf tree) {
241:                scan(tree.expr);
242:                scan(tree.clazz);
243:            }
244:
245:            public void visitIndexed(JCArrayAccess tree) {
246:                scan(tree.indexed);
247:                scan(tree.index);
248:            }
249:
250:            public void visitSelect(JCFieldAccess tree) {
251:                scan(tree.selected);
252:            }
253:
254:            public void visitIdent(JCIdent tree) {
255:            }
256:
257:            public void visitLiteral(JCLiteral tree) {
258:            }
259:
260:            public void visitTypeIdent(JCPrimitiveTypeTree tree) {
261:            }
262:
263:            public void visitTypeArray(JCArrayTypeTree tree) {
264:                scan(tree.elemtype);
265:            }
266:
267:            public void visitTypeApply(JCTypeApply tree) {
268:                scan(tree.clazz);
269:                scan(tree.arguments);
270:            }
271:
272:            public void visitTypeParameter(JCTypeParameter tree) {
273:                scan(tree.bounds);
274:            }
275:
276:            @Override
277:            public void visitWildcard(JCWildcard tree) {
278:                scan(tree.kind);
279:                if (tree.inner != null)
280:                    scan(tree.inner);
281:            }
282:
283:            @Override
284:            public void visitTypeBoundKind(TypeBoundKind that) {
285:            }
286:
287:            public void visitModifiers(JCModifiers tree) {
288:                scan(tree.annotations);
289:            }
290:
291:            public void visitAnnotation(JCAnnotation tree) {
292:                scan(tree.annotationType);
293:                scan(tree.args);
294:            }
295:
296:            public void visitErroneous(JCErroneous tree) {
297:            }
298:
299:            public void visitLetExpr(LetExpr tree) {
300:                scan(tree.defs);
301:                scan(tree.expr);
302:            }
303:
304:            public void visitTree(JCTree tree) {
305:                assert false;
306:            }
307:        }
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