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1   /***
2    *
3    * Copyright 2005 Jeremy Rayner
4    *
5    * Licensed under the Apache License, Version 2.0 (the "License");
6    * you may not use this file except in compliance with the License.
7    * You may obtain a copy of the License at
8    *
9    * http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   *
17   **/
18  package org.codehaus.groovy.antlr.treewalker;
19  
20  import java.util.List;
21  import java.util.ArrayList;
22  import java.util.Stack;
23  
24  import org.codehaus.groovy.antlr.GroovySourceAST;
25  import org.codehaus.groovy.antlr.AntlrASTProcessor;
26  import org.codehaus.groovy.antlr.parser.GroovyTokenTypes;
27  
28  import antlr.collections.AST;
29  
30  /***                                                  
31   * Helper Class for Antlr AST traversal and visitation.
32   *
33   * @author <a href="mailto:groovy@ross-rayner.com">Jeremy Rayner</a>
34   * @version $Revision: 1.8 $
35   */
36  
37  public abstract class TraversalHelper implements AntlrASTProcessor {
38      protected List unvisitedNodes;
39      private Visitor v;
40  
41      public TraversalHelper(Visitor visitor) {
42          this.unvisitedNodes = new ArrayList();
43          this.v = visitor;
44      }
45  
46      protected void setUp(GroovySourceAST ast) {
47          v.setUp();
48      }
49      protected void tearDown(GroovySourceAST ast) {
50          v.tearDown();
51      }
52  
53      protected void push(GroovySourceAST ast) {
54          v.push(ast);
55      }
56      protected GroovySourceAST pop() {
57          return v.pop();
58      }
59  
60      protected void visitNode(GroovySourceAST ast, int n) {
61          if (ast != null) {
62              switch (ast.getType()) {
63                  case GroovyTokenTypes.ABSTRACT                      :   v.visitAbstract(ast,n);                     break;
64                  case GroovyTokenTypes.ANNOTATION                    :   v.visitAnnotation(ast,n);                   break;
65                  case GroovyTokenTypes.ANNOTATIONS                   :   v.visitAnnotations(ast,n);                  break;
66                  case GroovyTokenTypes.ANNOTATION_ARRAY_INIT         :   v.visitAnnotationArrayInit(ast,n);          break;
67                  case GroovyTokenTypes.ANNOTATION_DEF                :   v.visitAnnotationDef(ast,n);                break;
68                  case GroovyTokenTypes.ANNOTATION_FIELD_DEF          :   v.visitAnnotationFieldDef(ast,n);           break;
69                  case GroovyTokenTypes.ANNOTATION_MEMBER_VALUE_PAIR  :   v.visitAnnotationMemberValuePair(ast,n);    break;
70                  case GroovyTokenTypes.ARRAY_DECLARATOR              :   v.visitArrayDeclarator(ast,n);              break;
71                  case GroovyTokenTypes.ASSIGN                        :   v.visitAssign(ast,n);                       break;
72                  case GroovyTokenTypes.AT                            :   v.visitAt(ast,n);                           break;
73                  case GroovyTokenTypes.BAND                          :   v.visitBand(ast,n);                         break;
74                  case GroovyTokenTypes.BAND_ASSIGN                   :   v.visitBandAssign(ast,n);                   break;
75                  case GroovyTokenTypes.BIG_SUFFIX                    :   v.visitBigSuffix(ast,n);                    break;
76                  case GroovyTokenTypes.BLOCK                         :   v.visitBlock(ast,n);                        break;
77                  case GroovyTokenTypes.BNOT                          :   v.visitBnot(ast,n);                         break;
78                  case GroovyTokenTypes.BOR                           :   v.visitBor(ast,n);                          break;
79                  case GroovyTokenTypes.BOR_ASSIGN                    :   v.visitBorAssign(ast,n);                    break;
80                  case GroovyTokenTypes.BSR                           :   v.visitBsr(ast,n);                          break;
81                  case GroovyTokenTypes.BSR_ASSIGN                    :   v.visitBsrAssign(ast,n);                    break;
82                  case GroovyTokenTypes.BXOR                          :   v.visitBxor(ast,n);                         break;
83                  case GroovyTokenTypes.BXOR_ASSIGN                   :   v.visitBxorAssign(ast,n);                   break;
84                  case GroovyTokenTypes.CASE_GROUP                    :   v.visitCaseGroup(ast,n);                    break;
85                  case GroovyTokenTypes.CLASS_DEF                     :   v.visitClassDef(ast,n);                     break;
86                  case GroovyTokenTypes.CLOSED_BLOCK                  :   v.visitClosedBlock(ast,n);                  break;
87                  case GroovyTokenTypes.CLOSURE_OP                    :   v.visitClosureOp(ast,n);                    break;
88                  case GroovyTokenTypes.COLON                         :   v.visitColon(ast,n);                        break;
89                  case GroovyTokenTypes.COMMA                         :   v.visitComma(ast,n);                        break;
90                  case GroovyTokenTypes.COMPARE_TO                    :   v.visitCompareTo(ast,n);                    break;
91                  case GroovyTokenTypes.CTOR_CALL                     :   v.visitCtorCall(ast,n);                     break;
92                  case GroovyTokenTypes.CTOR_IDENT                    :   v.visitCtorIdent(ast,n);                    break;
93                  case GroovyTokenTypes.DEC                           :   v.visitDec(ast,n);                          break;
94                  case GroovyTokenTypes.DIGIT                         :   v.visitDigit(ast,n);                        break;
95                  case GroovyTokenTypes.DIV                           :   v.visitDiv(ast,n);                          break;
96                  case GroovyTokenTypes.DIV_ASSIGN                    :   v.visitDivAssign(ast,n);                    break;
97                  case GroovyTokenTypes.DOLLAR                        :   v.visitDollar(ast,n);                       break;
98                  case GroovyTokenTypes.DOT                           :   v.visitDot(ast,n);                          break;
99                  case GroovyTokenTypes.DYNAMIC_MEMBER                :   v.visitDynamicMember(ast,n);                break;
100                 case GroovyTokenTypes.ELIST                         :   v.visitElist(ast,n);                        break;
101                 case GroovyTokenTypes.EMPTY_STAT                    :   v.visitEmptyStat(ast,n);                    break;
102                 case GroovyTokenTypes.ENUM_CONSTANT_DEF             :   v.visitEnumConstantDef(ast,n);              break;
103                 case GroovyTokenTypes.ENUM_DEF                      :   v.visitEnumDef(ast,n);                      break;
104                 case GroovyTokenTypes.EOF                           :   v.visitEof(ast,n);                          break;
105                 case GroovyTokenTypes.EQUAL                         :   v.visitEqual(ast,n);                        break;
106                 case GroovyTokenTypes.ESC                           :   v.visitEsc(ast,n);                          break;
107                 case GroovyTokenTypes.EXPONENT                      :   v.visitExponent(ast,n);                     break;
108                 case GroovyTokenTypes.EXPR                          :   v.visitExpr(ast,n);                         break;
109                 case GroovyTokenTypes.EXTENDS_CLAUSE                :   v.visitExtendsClause(ast,n);                break;
110                 case GroovyTokenTypes.FINAL                         :   v.visitFinal(ast,n);                        break;
111                 case GroovyTokenTypes.FLOAT_SUFFIX                  :   v.visitFloatSuffix(ast,n);                  break;
112                 case GroovyTokenTypes.FOR_CONDITION                 :   v.visitForCondition(ast,n);                 break;
113                 case GroovyTokenTypes.FOR_EACH_CLAUSE               :   v.visitForEachClause(ast,n);                break;
114                 case GroovyTokenTypes.FOR_INIT                      :   v.visitForInit(ast,n);                      break;
115                 case GroovyTokenTypes.FOR_IN_ITERABLE               :   v.visitForInIterable(ast,n);                break;
116                 case GroovyTokenTypes.FOR_ITERATOR                  :   v.visitForIterator(ast,n);                  break;
117                 case GroovyTokenTypes.GE                            :   v.visitGe(ast,n);                           break;
118                 case GroovyTokenTypes.GT                            :   v.visitGt(ast,n);                           break;
119                 case GroovyTokenTypes.HEX_DIGIT                     :   v.visitHexDigit(ast,n);                     break;
120                 case GroovyTokenTypes.IDENT                         :   v.visitIdent(ast,n);                        break;
121                 case GroovyTokenTypes.IMPLEMENTS_CLAUSE             :   v.visitImplementsClause(ast,n);             break;
122                 case GroovyTokenTypes.IMPLICIT_PARAMETERS           :   v.visitImplicitParameters(ast,n);           break;
123                 case GroovyTokenTypes.IMPORT                        :   v.visitImport(ast,n);                       break;
124                 case GroovyTokenTypes.INC                           :   v.visitInc(ast,n);                          break;
125                 case GroovyTokenTypes.INDEX_OP                      :   v.visitIndexOp(ast,n);                      break;
126                 case GroovyTokenTypes.INSTANCE_INIT                 :   v.visitInstanceInit(ast,n);                 break;
127                 case GroovyTokenTypes.INTERFACE_DEF                 :   v.visitInterfaceDef(ast,n);                 break;
128                 case GroovyTokenTypes.LABELED_ARG                   :   v.visitLabeledArg(ast,n);                   break;
129                 case GroovyTokenTypes.LABELED_STAT                  :   v.visitLabeledStat(ast,n);                  break;
130                 case GroovyTokenTypes.LAND                          :   v.visitLand(ast,n);                         break;
131                 case GroovyTokenTypes.LBRACK                        :   v.visitLbrack(ast,n);                       break;
132                 case GroovyTokenTypes.LCURLY                        :   v.visitLcurly(ast,n);                       break;
133                 case GroovyTokenTypes.LE                            :   v.visitLe(ast,n);                           break;
134                 case GroovyTokenTypes.LETTER                        :   v.visitLetter(ast,n);                       break;
135                 case GroovyTokenTypes.LIST_CONSTRUCTOR              :   v.visitListConstructor(ast,n);              break;
136                 case GroovyTokenTypes.LITERAL_any                   :   v.visitLiteralAny(ast,n);                   break;
137                 case GroovyTokenTypes.LITERAL_as                    :   v.visitLiteralAs(ast,n);                    break;
138                 case GroovyTokenTypes.LITERAL_assert                :   v.visitLiteralAssert(ast,n);                break;
139                 case GroovyTokenTypes.LITERAL_boolean               :   v.visitLiteralBoolean(ast,n);               break;
140                 case GroovyTokenTypes.LITERAL_break                 :   v.visitLiteralBreak(ast,n);                 break;
141                 case GroovyTokenTypes.LITERAL_byte                  :   v.visitLiteralByte(ast,n);                  break;
142                 case GroovyTokenTypes.LITERAL_case                  :   v.visitLiteralCase(ast,n);                  break;
143                 case GroovyTokenTypes.LITERAL_catch                 :   v.visitLiteralCatch(ast,n);                 break;
144                 case GroovyTokenTypes.LITERAL_char                  :   v.visitLiteralChar(ast,n);                  break;
145                 case GroovyTokenTypes.LITERAL_class                 :   v.visitLiteralClass(ast,n);                 break;
146                 case GroovyTokenTypes.LITERAL_continue              :   v.visitLiteralContinue(ast,n);              break;
147                 case GroovyTokenTypes.LITERAL_def                   :   v.visitLiteralDef(ast,n);                   break;
148                 case GroovyTokenTypes.LITERAL_default               :   v.visitLiteralDefault(ast,n);               break;
149                 case GroovyTokenTypes.LITERAL_double                :   v.visitLiteralDouble(ast,n);                break;
150                 case GroovyTokenTypes.LITERAL_else                  :   v.visitLiteralElse(ast,n);                  break;
151                 case GroovyTokenTypes.LITERAL_enum                  :   v.visitLiteralEnum(ast,n);                  break;
152                 case GroovyTokenTypes.LITERAL_extends               :   v.visitLiteralExtends(ast,n);               break;
153                 case GroovyTokenTypes.LITERAL_false                 :   v.visitLiteralFalse(ast,n);                 break;
154                 case GroovyTokenTypes.LITERAL_finally               :   v.visitLiteralFinally(ast,n);               break;
155                 case GroovyTokenTypes.LITERAL_float                 :   v.visitLiteralFloat(ast,n);                 break;
156                 case GroovyTokenTypes.LITERAL_for                   :   v.visitLiteralFor(ast,n);                   break;
157                 case GroovyTokenTypes.LITERAL_if                    :   v.visitLiteralIf(ast,n);                    break;
158                 case GroovyTokenTypes.LITERAL_implements            :   v.visitLiteralImplements(ast,n);            break;
159                 case GroovyTokenTypes.LITERAL_import                :   v.visitLiteralImport(ast,n);                break;
160                 case GroovyTokenTypes.LITERAL_in                    :   v.visitLiteralIn(ast,n);                    break;
161                 case GroovyTokenTypes.LITERAL_instanceof            :   v.visitLiteralInstanceof(ast,n);            break;
162                 case GroovyTokenTypes.LITERAL_int                   :   v.visitLiteralInt(ast,n);                   break;
163                 case GroovyTokenTypes.LITERAL_interface             :   v.visitLiteralInterface(ast,n);             break;
164                 case GroovyTokenTypes.LITERAL_long                  :   v.visitLiteralLong(ast,n);                  break;
165                 case GroovyTokenTypes.LITERAL_native                :   v.visitLiteralNative(ast,n);                break;
166                 case GroovyTokenTypes.LITERAL_new                   :   v.visitLiteralNew(ast,n);                   break;
167                 case GroovyTokenTypes.LITERAL_null                  :   v.visitLiteralNull(ast,n);                  break;
168                 case GroovyTokenTypes.LITERAL_package               :   v.visitLiteralPackage(ast,n);               break;
169                 case GroovyTokenTypes.LITERAL_private               :   v.visitLiteralPrivate(ast,n);               break;
170                 case GroovyTokenTypes.LITERAL_protected             :   v.visitLiteralProtected(ast,n);             break;
171                 case GroovyTokenTypes.LITERAL_public                :   v.visitLiteralPublic(ast,n);                break;
172                 case GroovyTokenTypes.LITERAL_return                :   v.visitLiteralReturn(ast,n);                break;
173                 case GroovyTokenTypes.LITERAL_short                 :   v.visitLiteralShort(ast,n);                 break;
174                 case GroovyTokenTypes.LITERAL_static                :   v.visitLiteralStatic(ast,n);                break;
175                 case GroovyTokenTypes.LITERAL_super                 :   v.visitLiteralSuper(ast,n);                 break;
176                 case GroovyTokenTypes.LITERAL_switch                :   v.visitLiteralSwitch(ast,n);                break;
177                 case GroovyTokenTypes.LITERAL_synchronized          :   v.visitLiteralSynchronized(ast,n);          break;
178                 case GroovyTokenTypes.LITERAL_this                  :   v.visitLiteralThis(ast,n);                  break;
179                 case GroovyTokenTypes.LITERAL_threadsafe            :   v.visitLiteralThreadsafe(ast,n);            break;
180                 case GroovyTokenTypes.LITERAL_throw                 :   v.visitLiteralThrow(ast,n);                 break;
181                 case GroovyTokenTypes.LITERAL_throws                :   v.visitLiteralThrows(ast,n);                break;
182                 case GroovyTokenTypes.LITERAL_transient             :   v.visitLiteralTransient(ast,n);             break;
183                 case GroovyTokenTypes.LITERAL_true                  :   v.visitLiteralTrue(ast,n);                  break;
184                 case GroovyTokenTypes.LITERAL_try                   :   v.visitLiteralTry(ast,n);                   break;
185                 case GroovyTokenTypes.LITERAL_void                  :   v.visitLiteralVoid(ast,n);                  break;
186                 case GroovyTokenTypes.LITERAL_volatile              :   v.visitLiteralVolatile(ast,n);              break;
187                 case GroovyTokenTypes.LITERAL_while                 :   v.visitLiteralWhile(ast,n);                 break;
188                 case GroovyTokenTypes.LITERAL_with                  :   v.visitLiteralWith(ast,n);                  break;
189                 case GroovyTokenTypes.LNOT                          :   v.visitLnot(ast,n);                         break;
190                 case GroovyTokenTypes.LOR                           :   v.visitLor(ast,n);                          break;
191                 case GroovyTokenTypes.LPAREN                        :   v.visitLparen(ast,n);                       break;
192                 case GroovyTokenTypes.LT                            :   v.visitLt(ast,n);                           break;
193                 case GroovyTokenTypes.MAP_CONSTRUCTOR               :   v.visitMapConstructor(ast,n);               break;
194                 case GroovyTokenTypes.MEMBER_POINTER                :   v.visitMemberPointer(ast,n);                break;
195                 case GroovyTokenTypes.METHOD_CALL                   :   v.visitMethodCall(ast,n);                   break;
196                 case GroovyTokenTypes.METHOD_DEF                    :   v.visitMethodDef(ast,n);                    break;
197                 case GroovyTokenTypes.MINUS                         :   v.visitMinus(ast,n);                        break;
198                 case GroovyTokenTypes.MINUS_ASSIGN                  :   v.visitMinusAssign(ast,n);                  break;
199                 case GroovyTokenTypes.ML_COMMENT                    :   v.visitMlComment(ast,n);                    break;
200                 case GroovyTokenTypes.MOD                           :   v.visitMod(ast,n);                          break;
201                 case GroovyTokenTypes.MODIFIERS                     :   v.visitModifiers(ast,n);                    break;
202                 case GroovyTokenTypes.MOD_ASSIGN                    :   v.visitModAssign(ast,n);                    break;
203                 case GroovyTokenTypes.NLS                           :   v.visitNls(ast,n);                          break;
204                 case GroovyTokenTypes.NOT_EQUAL                     :   v.visitNotEqual(ast,n);                     break;
205                 case GroovyTokenTypes.NULL_TREE_LOOKAHEAD           :   v.visitNullTreeLookahead(ast,n);            break;
206                 case GroovyTokenTypes.NUM_BIG_DECIMAL               :   v.visitNumBigDecimal(ast,n);                break;
207                 case GroovyTokenTypes.NUM_BIG_INT                   :   v.visitNumBigInt(ast,n);                    break;
208                 case GroovyTokenTypes.NUM_DOUBLE                    :   v.visitNumDouble(ast,n);                    break;
209                 case GroovyTokenTypes.NUM_FLOAT                     :   v.visitNumFloat(ast,n);                     break;
210                 case GroovyTokenTypes.NUM_INT                       :   v.visitNumInt(ast,n);                       break;
211                 case GroovyTokenTypes.NUM_LONG                      :   v.visitNumLong(ast,n);                      break;
212                 case GroovyTokenTypes.OBJBLOCK                      :   v.visitObjblock(ast,n);                     break;
213                 case GroovyTokenTypes.ONE_NL                        :   v.visitOneNl(ast,n);                        break;
214                 case GroovyTokenTypes.OPTIONAL_DOT                  :   v.visitOptionalDot(ast,n);                  break;
215                 case GroovyTokenTypes.PACKAGE_DEF                   :   v.visitPackageDef(ast,n);                   break;
216                 case GroovyTokenTypes.PARAMETERS                    :   v.visitParameters(ast,n);                   break;
217                 case GroovyTokenTypes.PARAMETER_DEF                 :   v.visitParameterDef(ast,n);                 break;
218                 case GroovyTokenTypes.PLUS                          :   v.visitPlus(ast,n);                         break;
219                 case GroovyTokenTypes.PLUS_ASSIGN                   :   v.visitPlusAssign(ast,n);                   break;
220                 case GroovyTokenTypes.POST_DEC                      :   v.visitPostDec(ast,n);                      break;
221                 case GroovyTokenTypes.POST_INC                      :   v.visitPostInc(ast,n);                      break;
222                 case GroovyTokenTypes.QUESTION                      :   v.visitQuestion(ast,n);                     break;
223                 case GroovyTokenTypes.RANGE_EXCLUSIVE               :   v.visitRangeExclusive(ast,n);               break;
224                 case GroovyTokenTypes.RANGE_INCLUSIVE               :   v.visitRangeInclusive(ast,n);               break;
225                 case GroovyTokenTypes.RBRACK                        :   v.visitRbrack(ast,n);                       break;
226                 case GroovyTokenTypes.RCURLY                        :   v.visitRcurly(ast,n);                       break;
227                 case GroovyTokenTypes.REGEXP_CTOR_END               :   v.visitRegexpCtorEnd(ast,n);                break;
228                 case GroovyTokenTypes.REGEXP_LITERAL                :   v.visitRegexpLiteral(ast,n);                break;
229                 case GroovyTokenTypes.REGEXP_SYMBOL                 :   v.visitRegexpSymbol(ast,n);                 break;
230                 case GroovyTokenTypes.REGEX_FIND                    :   v.visitRegexFind(ast,n);                    break;
231                 case GroovyTokenTypes.REGEX_MATCH                   :   v.visitRegexMatch(ast,n);                   break;
232                 case GroovyTokenTypes.RPAREN                        :   v.visitRparen(ast,n);                       break;
233                 case GroovyTokenTypes.SCOPE_ESCAPE                  :   v.visitScopeEscape(ast,n);                  break;
234                 case GroovyTokenTypes.SELECT_SLOT                   :   v.visitSelectSlot(ast,n);                   break;
235                 case GroovyTokenTypes.SEMI                          :   v.visitSemi(ast,n);                         break;
236                 case GroovyTokenTypes.SH_COMMENT                    :   v.visitShComment(ast,n);                    break;
237                 case GroovyTokenTypes.SL                            :   v.visitSl(ast,n);                           break;
238                 case GroovyTokenTypes.SLIST                         :   v.visitSlist(ast,n);                        break;
239                 case GroovyTokenTypes.SL_ASSIGN                     :   v.visitSlAssign(ast,n);                     break;
240                 case GroovyTokenTypes.SL_COMMENT                    :   v.visitSlComment(ast,n);                    break;
241                 case GroovyTokenTypes.SPREAD_ARG                    :   v.visitSpreadArg(ast,n);                    break;
242                 case GroovyTokenTypes.SPREAD_DOT                    :   v.visitSpreadDot(ast,n);                    break;
243                 case GroovyTokenTypes.SPREAD_MAP_ARG                :   v.visitSpreadMapArg(ast,n);                 break;
244                 case GroovyTokenTypes.SR                            :   v.visitSr(ast,n);                           break;
245                 case GroovyTokenTypes.SR_ASSIGN                     :   v.visitSrAssign(ast,n);                     break;
246                 case GroovyTokenTypes.STAR                          :   v.visitStar(ast,n);                         break;
247                 case GroovyTokenTypes.STAR_ASSIGN                   :   v.visitStarAssign(ast,n);                   break;
248                 case GroovyTokenTypes.STAR_STAR                     :   v.visitStarStar(ast,n);                     break;
249                 case GroovyTokenTypes.STAR_STAR_ASSIGN              :   v.visitStarStarAssign(ast,n);               break;
250                 case GroovyTokenTypes.STATIC_IMPORT                 :   v.visitStaticImport(ast,n);                 break;
251                 case GroovyTokenTypes.STATIC_INIT                   :   v.visitStaticInit(ast,n);                   break;
252                 case GroovyTokenTypes.STRICTFP                      :   v.visitStrictfp(ast,n);                     break;
253                 case GroovyTokenTypes.STRING_CH                     :   v.visitStringCh(ast,n);                     break;
254                 case GroovyTokenTypes.STRING_CONSTRUCTOR            :   v.visitStringConstructor(ast,n);            break;
255                 case GroovyTokenTypes.STRING_CTOR_END               :   v.visitStringCtorEnd(ast,n);                break;
256                 case GroovyTokenTypes.STRING_CTOR_MIDDLE            :   v.visitStringCtorMiddle(ast,n);             break;
257                 case GroovyTokenTypes.STRING_CTOR_START             :   v.visitStringCtorStart(ast,n);              break;
258                 case GroovyTokenTypes.STRING_LITERAL                :   v.visitStringLiteral(ast,n);                break;
259                 case GroovyTokenTypes.STRING_NL                     :   v.visitStringNl(ast,n);                     break;
260                 case GroovyTokenTypes.SUPER_CTOR_CALL               :   v.visitSuperCtorCall(ast,n);                break;
261                 case GroovyTokenTypes.TRIPLE_DOT                    :   v.visitTripleDot(ast,n);                    break;
262                 case GroovyTokenTypes.TYPE                          :   v.visitType(ast,n);                         break;
263                 case GroovyTokenTypes.TYPECAST                      :   v.visitTypecast(ast,n);                     break;
264                 case GroovyTokenTypes.TYPE_ARGUMENT                 :   v.visitTypeArgument(ast,n);                 break;
265                 case GroovyTokenTypes.TYPE_ARGUMENTS                :   v.visitTypeArguments(ast,n);                break;
266                 case GroovyTokenTypes.TYPE_LOWER_BOUNDS             :   v.visitTypeLowerBounds(ast,n);              break;
267                 case GroovyTokenTypes.TYPE_PARAMETER                :   v.visitTypeParameter(ast,n);                break;
268                 case GroovyTokenTypes.TYPE_PARAMETERS               :   v.visitTypeParameters(ast,n);               break;
269                 case GroovyTokenTypes.TYPE_UPPER_BOUNDS             :   v.visitTypeUpperBounds(ast,n);              break;
270                 case GroovyTokenTypes.UNARY_MINUS                   :   v.visitUnaryMinus(ast,n);                   break;
271                 case GroovyTokenTypes.UNARY_PLUS                    :   v.visitUnaryPlus(ast,n);                    break;
272                 case GroovyTokenTypes.UNUSED_CONST                  :   v.visitUnusedConst(ast,n);                  break;
273                 case GroovyTokenTypes.UNUSED_DO                     :   v.visitUnusedDo(ast,n);                     break;
274                 case GroovyTokenTypes.UNUSED_GOTO                   :   v.visitUnusedGoto(ast,n);                   break;
275                 case GroovyTokenTypes.VARIABLE_DEF                  :   v.visitVariableDef(ast,n);                  break;
276                 case GroovyTokenTypes.VARIABLE_PARAMETER_DEF        :   v.visitVariableParameterDef(ast,n);         break;
277                 case GroovyTokenTypes.VOCAB                         :   v.visitVocab(ast,n);                        break;
278                 case GroovyTokenTypes.WILDCARD_TYPE                 :   v.visitWildcardType(ast,n);                 break;
279                 case GroovyTokenTypes.WS                            :   v.visitWs(ast,n);                           break;
280 
281 
282                 default                                             :   v.visitDefault(ast,n);                      break;
283             }
284         } else {
285             // the supplied AST was null
286             v.visitDefault(null,n);
287         }
288     }
289     protected abstract void accept(GroovySourceAST currentNode);
290 
291     protected void accept_v_FirstChildsFirstChild_v_Child2_Child3_v_Child4_v___v_LastChild(GroovySourceAST t) {
292         openingVisit(t);
293         GroovySourceAST expr2 = t.childAt(0);
294         skip(expr2);
295         accept(expr2.childAt(0));
296         closingVisit(t);
297 
298         GroovySourceAST sibling = (GroovySourceAST)expr2.getNextSibling();
299         boolean firstSList = true;
300         while (sibling != null) {
301             if (!firstSList) {
302                 subsequentVisit(t);
303             }
304             firstSList = false;
305             accept(sibling);
306             sibling = (GroovySourceAST)sibling.getNextSibling();
307         }
308     }
309 
310     protected void accept_v_FirstChildsFirstChild_v_RestOfTheChildren(GroovySourceAST t) {
311         openingVisit(t);
312         GroovySourceAST expr = t.childAt(0);
313         skip(expr);
314         accept(expr.childAt(0));
315         closingVisit(t);
316         acceptSiblings(expr);
317     }
318 
319     protected void accept_FirstChild_v_SecondChild(GroovySourceAST t) {
320         accept(t.childAt(0));
321         subsequentVisit(t);
322         accept(t.childAt(1));
323     }
324     protected void accept_FirstChild_v_SecondChild_v(GroovySourceAST t) {
325         accept(t.childAt(0));
326         openingVisit(t);
327         accept(t.childAt(1));
328         closingVisit(t);
329     }
330 
331     protected void accept_FirstChild_v_SecondChildsChildren_v(GroovySourceAST t) {
332         accept(t.childAt(0));
333 
334         openingVisit(t);
335         GroovySourceAST secondChild = t.childAt(1);
336         if (secondChild != null) {
337             acceptChildren(secondChild);
338         }
339         closingVisit(t);
340     }
341 
342     protected void accept_FirstChild_v_SecondChild_v_ThirdChild_v(GroovySourceAST t) {
343         accept(t.childAt(0));
344         openingVisit(t);
345         accept(t.childAt(1));
346         subsequentVisit(t);
347         accept(t.childAt(2));
348         closingVisit(t);
349     }
350     protected void accept_v_FirstChild_v_SecondChild_v___LastChild_v(GroovySourceAST t) {
351         openingVisit(t);
352         GroovySourceAST child = (GroovySourceAST)t.getFirstChild();
353         if (child != null){
354             accept(child);
355             GroovySourceAST sibling = (GroovySourceAST)child.getNextSibling();
356             while (sibling != null) {
357                 subsequentVisit(t);
358                 accept(sibling);
359                 sibling = (GroovySourceAST)sibling.getNextSibling();
360             }
361         }
362         closingVisit(t);
363     }
364 
365     protected void accept_v_FirstChild_v(GroovySourceAST t) {
366         openingVisit(t);
367         accept(t.childAt(0));
368         closingVisit(t);
369     }
370 
371     protected void accept_v_AllChildren_v_Siblings(GroovySourceAST t) {
372         openingVisit(t);
373         acceptChildren(t);
374         closingVisit(t);
375         acceptSiblings(t);
376     }
377 
378     protected void accept_v_AllChildren_v(GroovySourceAST t) {
379         openingVisit(t);
380         acceptChildren(t);
381         closingVisit(t);
382     }
383 
384     protected void accept_FirstChild_v_RestOfTheChildren(GroovySourceAST t) {
385         accept(t.childAt(0));
386         openingVisit(t);
387         closingVisit(t);
388         acceptSiblings(t.childAt(0));
389     }
390     protected void accept_FirstChild_v_RestOfTheChildren_v_LastChild(GroovySourceAST t) {
391         int count = 0;
392         accept(t.childAt(0));
393         count++;
394         openingVisit(t);
395         if (t.childAt(0) != null) {
396             GroovySourceAST sibling = (GroovySourceAST)t.childAt(0).getNextSibling();
397             while (sibling != null) {
398                 if (count == t.getNumberOfChildren() - 1) {closingVisit(t);}
399                 accept(sibling);
400                 count++;
401                 sibling = (GroovySourceAST)sibling.getNextSibling();
402             }
403         }
404 
405 
406     }
407     protected void accept_FirstChild_v_RestOfTheChildren_v(GroovySourceAST t) {
408         accept(t.childAt(0));
409         openingVisit(t);
410         acceptSiblings(t.childAt(0));
411         closingVisit(t);
412     }
413     protected void accept_v_FirstChild_v_RestOfTheChildren(GroovySourceAST t) {
414         accept_v_FirstChild_v(t);
415         acceptSiblings(t.childAt(0));
416     }
417 
418     protected void accept_v_FirstChild_v_RestOfTheChildren_v(GroovySourceAST t) {
419         openingVisit(t);
420         accept(t.childAt(0));
421         subsequentVisit(t);
422         acceptSiblings(t.childAt(0));
423         closingVisit(t);
424     }
425 
426     protected void acceptSiblings(GroovySourceAST t) {
427         if (t != null) {
428             GroovySourceAST sibling = (GroovySourceAST)t.getNextSibling();
429             while (sibling != null) {
430                 accept(sibling);
431                 sibling = (GroovySourceAST)sibling.getNextSibling();
432             }
433         }
434     }
435 
436     protected void acceptChildren(GroovySourceAST t) {
437         if (t != null) {
438             GroovySourceAST child = (GroovySourceAST)t.getFirstChild();
439             if (child != null){
440                 accept(child);
441                 acceptSiblings(child);
442             }
443         }
444     }
445 
446     protected void skip(GroovySourceAST expr) {
447         unvisitedNodes.remove(expr);
448     }
449 
450     protected void openingVisit(GroovySourceAST t) {
451         unvisitedNodes.remove(t);
452 
453         int n = Visitor.OPENING_VISIT;
454         visitNode(t, n);
455     }
456 
457     protected void subsequentVisit(GroovySourceAST t) {
458         int n = Visitor.SUBSEQUENT_VISIT;
459         visitNode(t, n);
460     }
461 
462     protected void closingVisit(GroovySourceAST t) {
463         int n = Visitor.CLOSING_VISIT;
464         visitNode(t, n);
465     }
466     
467     public AST process(AST t) {
468         GroovySourceAST node = (GroovySourceAST) t;
469         
470         // process each node in turn
471         setUp(node);
472         accept(node);
473         acceptSiblings(node);
474         tearDown(node);
475         return null;
476     }    
477 }