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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 org.codehaus.groovy.antlr.GroovySourceAST;
23  import org.codehaus.groovy.antlr.AntlrASTProcessor;
24  import org.codehaus.groovy.antlr.parser.GroovyTokenTypes;
25  
26  import antlr.collections.AST;
27  
28  /***                                                  
29   * Helper Class for Antlr AST traversal and visitation.
30   *
31   * @author <a href="mailto:groovy@ross-rayner.com">Jeremy Rayner</a>
32   * @version $Revision: 1.7 $
33   */
34  
35  public abstract class TraversalHelper implements AntlrASTProcessor {
36      protected List unvisitedNodes;
37      private Visitor v;
38  
39      public TraversalHelper(Visitor visitor) {
40          this.unvisitedNodes = new ArrayList();
41          this.v = visitor;
42      }
43  
44      protected void setUp(GroovySourceAST ast) {
45          v.setUp();
46      }
47      protected void tearDown(GroovySourceAST ast) {
48          v.tearDown();
49      }
50  
51      protected void visitNode(GroovySourceAST ast, int n) {
52          if (ast != null) {
53              switch (ast.getType()) {
54                  case GroovyTokenTypes.ABSTRACT                      :   v.visitAbstract(ast,n);                     break;
55                  case GroovyTokenTypes.ANNOTATION                    :   v.visitAnnotation(ast,n);                   break;
56                  case GroovyTokenTypes.ANNOTATIONS                   :   v.visitAnnotations(ast,n);                  break;
57                  case GroovyTokenTypes.ANNOTATION_ARRAY_INIT         :   v.visitAnnotationArrayInit(ast,n);          break;
58                  case GroovyTokenTypes.ANNOTATION_DEF                :   v.visitAnnotationDef(ast,n);                break;
59                  case GroovyTokenTypes.ANNOTATION_FIELD_DEF          :   v.visitAnnotationFieldDef(ast,n);           break;
60                  case GroovyTokenTypes.ANNOTATION_MEMBER_VALUE_PAIR  :   v.visitAnnotationMemberValuePair(ast,n);    break;
61                  case GroovyTokenTypes.ARRAY_DECLARATOR              :   v.visitArrayDeclarator(ast,n);              break;
62                  case GroovyTokenTypes.ASSIGN                        :   v.visitAssign(ast,n);                       break;
63                  case GroovyTokenTypes.AT                            :   v.visitAt(ast,n);                           break;
64                  case GroovyTokenTypes.BAND                          :   v.visitBand(ast,n);                         break;
65                  case GroovyTokenTypes.BAND_ASSIGN                   :   v.visitBandAssign(ast,n);                   break;
66                  case GroovyTokenTypes.BIG_SUFFIX                    :   v.visitBigSuffix(ast,n);                    break;
67                  case GroovyTokenTypes.BLOCK                         :   v.visitBlock(ast,n);                        break;
68                  case GroovyTokenTypes.BNOT                          :   v.visitBnot(ast,n);                         break;
69                  case GroovyTokenTypes.BOR                           :   v.visitBor(ast,n);                          break;
70                  case GroovyTokenTypes.BOR_ASSIGN                    :   v.visitBorAssign(ast,n);                    break;
71                  case GroovyTokenTypes.BSR                           :   v.visitBsr(ast,n);                          break;
72                  case GroovyTokenTypes.BSR_ASSIGN                    :   v.visitBsrAssign(ast,n);                    break;
73                  case GroovyTokenTypes.BXOR                          :   v.visitBxor(ast,n);                         break;
74                  case GroovyTokenTypes.BXOR_ASSIGN                   :   v.visitBxorAssign(ast,n);                   break;
75                  case GroovyTokenTypes.CASE_GROUP                    :   v.visitCaseGroup(ast,n);                    break;
76                  case GroovyTokenTypes.CLASS_DEF                     :   v.visitClassDef(ast,n);                     break;
77                  case GroovyTokenTypes.CLOSED_BLOCK                  :   v.visitClosedBlock(ast,n);                  break;
78                  case GroovyTokenTypes.CLOSURE_OP                    :   v.visitClosureOp(ast,n);                    break;
79                  case GroovyTokenTypes.COLON                         :   v.visitColon(ast,n);                        break;
80                  case GroovyTokenTypes.COMMA                         :   v.visitComma(ast,n);                        break;
81                  case GroovyTokenTypes.COMPARE_TO                    :   v.visitCompareTo(ast,n);                    break;
82                  case GroovyTokenTypes.CTOR_CALL                     :   v.visitCtorCall(ast,n);                     break;
83                  case GroovyTokenTypes.CTOR_IDENT                    :   v.visitCtorIdent(ast,n);                    break;
84                  case GroovyTokenTypes.DEC                           :   v.visitDec(ast,n);                          break;
85                  case GroovyTokenTypes.DIGIT                         :   v.visitDigit(ast,n);                        break;
86                  case GroovyTokenTypes.DIV                           :   v.visitDiv(ast,n);                          break;
87                  case GroovyTokenTypes.DIV_ASSIGN                    :   v.visitDivAssign(ast,n);                    break;
88                  case GroovyTokenTypes.DOLLAR                        :   v.visitDollar(ast,n);                       break;
89                  case GroovyTokenTypes.DOT                           :   v.visitDot(ast,n);                          break;
90                  case GroovyTokenTypes.DYNAMIC_MEMBER                :   v.visitDynamicMember(ast,n);                break;
91                  case GroovyTokenTypes.ELIST                         :   v.visitElist(ast,n);                        break;
92                  case GroovyTokenTypes.EMPTY_STAT                    :   v.visitEmptyStat(ast,n);                    break;
93                  case GroovyTokenTypes.ENUM_CONSTANT_DEF             :   v.visitEnumConstantDef(ast,n);              break;
94                  case GroovyTokenTypes.ENUM_DEF                      :   v.visitEnumDef(ast,n);                      break;
95                  case GroovyTokenTypes.EOF                           :   v.visitEof(ast,n);                          break;
96                  case GroovyTokenTypes.EQUAL                         :   v.visitEqual(ast,n);                        break;
97                  case GroovyTokenTypes.ESC                           :   v.visitEsc(ast,n);                          break;
98                  case GroovyTokenTypes.EXPONENT                      :   v.visitExponent(ast,n);                     break;
99                  case GroovyTokenTypes.EXPR                          :   v.visitExpr(ast,n);                         break;
100                 case GroovyTokenTypes.EXTENDS_CLAUSE                :   v.visitExtendsClause(ast,n);                break;
101                 case GroovyTokenTypes.FINAL                         :   v.visitFinal(ast,n);                        break;
102                 case GroovyTokenTypes.FLOAT_SUFFIX                  :   v.visitFloatSuffix(ast,n);                  break;
103                 case GroovyTokenTypes.FOR_CONDITION                 :   v.visitForCondition(ast,n);                 break;
104                 case GroovyTokenTypes.FOR_EACH_CLAUSE               :   v.visitForEachClause(ast,n);                break;
105                 case GroovyTokenTypes.FOR_INIT                      :   v.visitForInit(ast,n);                      break;
106                 case GroovyTokenTypes.FOR_IN_ITERABLE               :   v.visitForInIterable(ast,n);                break;
107                 case GroovyTokenTypes.FOR_ITERATOR                  :   v.visitForIterator(ast,n);                  break;
108                 case GroovyTokenTypes.GE                            :   v.visitGe(ast,n);                           break;
109                 case GroovyTokenTypes.GT                            :   v.visitGt(ast,n);                           break;
110                 case GroovyTokenTypes.HEX_DIGIT                     :   v.visitHexDigit(ast,n);                     break;
111                 case GroovyTokenTypes.IDENT                         :   v.visitIdent(ast,n);                        break;
112                 case GroovyTokenTypes.IMPLEMENTS_CLAUSE             :   v.visitImplementsClause(ast,n);             break;
113                 case GroovyTokenTypes.IMPLICIT_PARAMETERS           :   v.visitImplicitParameters(ast,n);           break;
114                 case GroovyTokenTypes.IMPORT                        :   v.visitImport(ast,n);                       break;
115                 case GroovyTokenTypes.INC                           :   v.visitInc(ast,n);                          break;
116                 case GroovyTokenTypes.INDEX_OP                      :   v.visitIndexOp(ast,n);                      break;
117                 case GroovyTokenTypes.INSTANCE_INIT                 :   v.visitInstanceInit(ast,n);                 break;
118                 case GroovyTokenTypes.INTERFACE_DEF                 :   v.visitInterfaceDef(ast,n);                 break;
119                 case GroovyTokenTypes.LABELED_ARG                   :   v.visitLabeledArg(ast,n);                   break;
120                 case GroovyTokenTypes.LABELED_STAT                  :   v.visitLabeledStat(ast,n);                  break;
121                 case GroovyTokenTypes.LAND                          :   v.visitLand(ast,n);                         break;
122                 case GroovyTokenTypes.LBRACK                        :   v.visitLbrack(ast,n);                       break;
123                 case GroovyTokenTypes.LCURLY                        :   v.visitLcurly(ast,n);                       break;
124                 case GroovyTokenTypes.LE                            :   v.visitLe(ast,n);                           break;
125                 case GroovyTokenTypes.LETTER                        :   v.visitLetter(ast,n);                       break;
126                 case GroovyTokenTypes.LIST_CONSTRUCTOR              :   v.visitListConstructor(ast,n);              break;
127                 case GroovyTokenTypes.LITERAL_any                   :   v.visitLiteralAny(ast,n);                   break;
128                 case GroovyTokenTypes.LITERAL_as                    :   v.visitLiteralAs(ast,n);                    break;
129                 case GroovyTokenTypes.LITERAL_assert                :   v.visitLiteralAssert(ast,n);                break;
130                 case GroovyTokenTypes.LITERAL_boolean               :   v.visitLiteralBoolean(ast,n);               break;
131                 case GroovyTokenTypes.LITERAL_break                 :   v.visitLiteralBreak(ast,n);                 break;
132                 case GroovyTokenTypes.LITERAL_byte                  :   v.visitLiteralByte(ast,n);                  break;
133                 case GroovyTokenTypes.LITERAL_case                  :   v.visitLiteralCase(ast,n);                  break;
134                 case GroovyTokenTypes.LITERAL_catch                 :   v.visitLiteralCatch(ast,n);                 break;
135                 case GroovyTokenTypes.LITERAL_char                  :   v.visitLiteralChar(ast,n);                  break;
136                 case GroovyTokenTypes.LITERAL_class                 :   v.visitLiteralClass(ast,n);                 break;
137                 case GroovyTokenTypes.LITERAL_continue              :   v.visitLiteralContinue(ast,n);              break;
138                 case GroovyTokenTypes.LITERAL_def                   :   v.visitLiteralDef(ast,n);                   break;
139                 case GroovyTokenTypes.LITERAL_default               :   v.visitLiteralDefault(ast,n);               break;
140                 case GroovyTokenTypes.LITERAL_double                :   v.visitLiteralDouble(ast,n);                break;
141                 case GroovyTokenTypes.LITERAL_else                  :   v.visitLiteralElse(ast,n);                  break;
142                 case GroovyTokenTypes.LITERAL_enum                  :   v.visitLiteralEnum(ast,n);                  break;
143                 case GroovyTokenTypes.LITERAL_extends               :   v.visitLiteralExtends(ast,n);               break;
144                 case GroovyTokenTypes.LITERAL_false                 :   v.visitLiteralFalse(ast,n);                 break;
145                 case GroovyTokenTypes.LITERAL_finally               :   v.visitLiteralFinally(ast,n);               break;
146                 case GroovyTokenTypes.LITERAL_float                 :   v.visitLiteralFloat(ast,n);                 break;
147                 case GroovyTokenTypes.LITERAL_for                   :   v.visitLiteralFor(ast,n);                   break;
148                 case GroovyTokenTypes.LITERAL_if                    :   v.visitLiteralIf(ast,n);                    break;
149                 case GroovyTokenTypes.LITERAL_implements            :   v.visitLiteralImplements(ast,n);            break;
150                 case GroovyTokenTypes.LITERAL_import                :   v.visitLiteralImport(ast,n);                break;
151                 case GroovyTokenTypes.LITERAL_in                    :   v.visitLiteralIn(ast,n);                    break;
152                 case GroovyTokenTypes.LITERAL_instanceof            :   v.visitLiteralInstanceof(ast,n);            break;
153                 case GroovyTokenTypes.LITERAL_int                   :   v.visitLiteralInt(ast,n);                   break;
154                 case GroovyTokenTypes.LITERAL_interface             :   v.visitLiteralInterface(ast,n);             break;
155                 case GroovyTokenTypes.LITERAL_long                  :   v.visitLiteralLong(ast,n);                  break;
156                 case GroovyTokenTypes.LITERAL_native                :   v.visitLiteralNative(ast,n);                break;
157                 case GroovyTokenTypes.LITERAL_new                   :   v.visitLiteralNew(ast,n);                   break;
158                 case GroovyTokenTypes.LITERAL_null                  :   v.visitLiteralNull(ast,n);                  break;
159                 case GroovyTokenTypes.LITERAL_package               :   v.visitLiteralPackage(ast,n);               break;
160                 case GroovyTokenTypes.LITERAL_private               :   v.visitLiteralPrivate(ast,n);               break;
161                 case GroovyTokenTypes.LITERAL_protected             :   v.visitLiteralProtected(ast,n);             break;
162                 case GroovyTokenTypes.LITERAL_public                :   v.visitLiteralPublic(ast,n);                break;
163                 case GroovyTokenTypes.LITERAL_return                :   v.visitLiteralReturn(ast,n);                break;
164                 case GroovyTokenTypes.LITERAL_short                 :   v.visitLiteralShort(ast,n);                 break;
165                 case GroovyTokenTypes.LITERAL_static                :   v.visitLiteralStatic(ast,n);                break;
166                 case GroovyTokenTypes.LITERAL_super                 :   v.visitLiteralSuper(ast,n);                 break;
167                 case GroovyTokenTypes.LITERAL_switch                :   v.visitLiteralSwitch(ast,n);                break;
168                 case GroovyTokenTypes.LITERAL_synchronized          :   v.visitLiteralSynchronized(ast,n);          break;
169                 case GroovyTokenTypes.LITERAL_this                  :   v.visitLiteralThis(ast,n);                  break;
170                 case GroovyTokenTypes.LITERAL_threadsafe            :   v.visitLiteralThreadsafe(ast,n);            break;
171                 case GroovyTokenTypes.LITERAL_throw                 :   v.visitLiteralThrow(ast,n);                 break;
172                 case GroovyTokenTypes.LITERAL_throws                :   v.visitLiteralThrows(ast,n);                break;
173                 case GroovyTokenTypes.LITERAL_transient             :   v.visitLiteralTransient(ast,n);             break;
174                 case GroovyTokenTypes.LITERAL_true                  :   v.visitLiteralTrue(ast,n);                  break;
175                 case GroovyTokenTypes.LITERAL_try                   :   v.visitLiteralTry(ast,n);                   break;
176                 case GroovyTokenTypes.LITERAL_void                  :   v.visitLiteralVoid(ast,n);                  break;
177                 case GroovyTokenTypes.LITERAL_volatile              :   v.visitLiteralVolatile(ast,n);              break;
178                 case GroovyTokenTypes.LITERAL_while                 :   v.visitLiteralWhile(ast,n);                 break;
179                 case GroovyTokenTypes.LITERAL_with                  :   v.visitLiteralWith(ast,n);                  break;
180                 case GroovyTokenTypes.LNOT                          :   v.visitLnot(ast,n);                         break;
181                 case GroovyTokenTypes.LOR                           :   v.visitLor(ast,n);                          break;
182                 case GroovyTokenTypes.LPAREN                        :   v.visitLparen(ast,n);                       break;
183                 case GroovyTokenTypes.LT                            :   v.visitLt(ast,n);                           break;
184                 case GroovyTokenTypes.MAP_CONSTRUCTOR               :   v.visitMapConstructor(ast,n);               break;
185                 case GroovyTokenTypes.MEMBER_POINTER                :   v.visitMemberPointer(ast,n);                break;
186                 case GroovyTokenTypes.METHOD_CALL                   :   v.visitMethodCall(ast,n);                   break;
187                 case GroovyTokenTypes.METHOD_DEF                    :   v.visitMethodDef(ast,n);                    break;
188                 case GroovyTokenTypes.MINUS                         :   v.visitMinus(ast,n);                        break;
189                 case GroovyTokenTypes.MINUS_ASSIGN                  :   v.visitMinusAssign(ast,n);                  break;
190                 case GroovyTokenTypes.ML_COMMENT                    :   v.visitMlComment(ast,n);                    break;
191                 case GroovyTokenTypes.MOD                           :   v.visitMod(ast,n);                          break;
192                 case GroovyTokenTypes.MODIFIERS                     :   v.visitModifiers(ast,n);                    break;
193                 case GroovyTokenTypes.MOD_ASSIGN                    :   v.visitModAssign(ast,n);                    break;
194                 case GroovyTokenTypes.NLS                           :   v.visitNls(ast,n);                          break;
195                 case GroovyTokenTypes.NOT_EQUAL                     :   v.visitNotEqual(ast,n);                     break;
196                 case GroovyTokenTypes.NULL_TREE_LOOKAHEAD           :   v.visitNullTreeLookahead(ast,n);            break;
197                 case GroovyTokenTypes.NUM_BIG_DECIMAL               :   v.visitNumBigDecimal(ast,n);                break;
198                 case GroovyTokenTypes.NUM_BIG_INT                   :   v.visitNumBigInt(ast,n);                    break;
199                 case GroovyTokenTypes.NUM_DOUBLE                    :   v.visitNumDouble(ast,n);                    break;
200                 case GroovyTokenTypes.NUM_FLOAT                     :   v.visitNumFloat(ast,n);                     break;
201                 case GroovyTokenTypes.NUM_INT                       :   v.visitNumInt(ast,n);                       break;
202                 case GroovyTokenTypes.NUM_LONG                      :   v.visitNumLong(ast,n);                      break;
203                 case GroovyTokenTypes.OBJBLOCK                      :   v.visitObjblock(ast,n);                     break;
204                 case GroovyTokenTypes.ONE_NL                        :   v.visitOneNl(ast,n);                        break;
205                 case GroovyTokenTypes.OPTIONAL_DOT                  :   v.visitOptionalDot(ast,n);                  break;
206                 case GroovyTokenTypes.PACKAGE_DEF                   :   v.visitPackageDef(ast,n);                   break;
207                 case GroovyTokenTypes.PARAMETERS                    :   v.visitParameters(ast,n);                   break;
208                 case GroovyTokenTypes.PARAMETER_DEF                 :   v.visitParameterDef(ast,n);                 break;
209                 case GroovyTokenTypes.PLUS                          :   v.visitPlus(ast,n);                         break;
210                 case GroovyTokenTypes.PLUS_ASSIGN                   :   v.visitPlusAssign(ast,n);                   break;
211                 case GroovyTokenTypes.POST_DEC                      :   v.visitPostDec(ast,n);                      break;
212                 case GroovyTokenTypes.POST_INC                      :   v.visitPostInc(ast,n);                      break;
213                 case GroovyTokenTypes.QUESTION                      :   v.visitQuestion(ast,n);                     break;
214                 case GroovyTokenTypes.RANGE_EXCLUSIVE               :   v.visitRangeExclusive(ast,n);               break;
215                 case GroovyTokenTypes.RANGE_INCLUSIVE               :   v.visitRangeInclusive(ast,n);               break;
216                 case GroovyTokenTypes.RBRACK                        :   v.visitRbrack(ast,n);                       break;
217                 case GroovyTokenTypes.RCURLY                        :   v.visitRcurly(ast,n);                       break;
218                 case GroovyTokenTypes.REGEXP_CTOR_END               :   v.visitRegexpCtorEnd(ast,n);                break;
219                 case GroovyTokenTypes.REGEXP_LITERAL                :   v.visitRegexpLiteral(ast,n);                break;
220                 case GroovyTokenTypes.REGEXP_SYMBOL                 :   v.visitRegexpSymbol(ast,n);                 break;
221                 case GroovyTokenTypes.REGEX_FIND                    :   v.visitRegexFind(ast,n);                    break;
222                 case GroovyTokenTypes.REGEX_MATCH                   :   v.visitRegexMatch(ast,n);                   break;
223                 case GroovyTokenTypes.RPAREN                        :   v.visitRparen(ast,n);                       break;
224                 case GroovyTokenTypes.SCOPE_ESCAPE                  :   v.visitScopeEscape(ast,n);                  break;
225                 case GroovyTokenTypes.SELECT_SLOT                   :   v.visitSelectSlot(ast,n);                   break;
226                 case GroovyTokenTypes.SEMI                          :   v.visitSemi(ast,n);                         break;
227                 case GroovyTokenTypes.SH_COMMENT                    :   v.visitShComment(ast,n);                    break;
228                 case GroovyTokenTypes.SL                            :   v.visitSl(ast,n);                           break;
229                 case GroovyTokenTypes.SLIST                         :   v.visitSlist(ast,n);                        break;
230                 case GroovyTokenTypes.SL_ASSIGN                     :   v.visitSlAssign(ast,n);                     break;
231                 case GroovyTokenTypes.SL_COMMENT                    :   v.visitSlComment(ast,n);                    break;
232                 case GroovyTokenTypes.SPREAD_ARG                    :   v.visitSpreadArg(ast,n);                    break;
233                 case GroovyTokenTypes.SPREAD_DOT                    :   v.visitSpreadDot(ast,n);                    break;
234                 case GroovyTokenTypes.SPREAD_MAP_ARG                :   v.visitSpreadMapArg(ast,n);                 break;
235                 case GroovyTokenTypes.SR                            :   v.visitSr(ast,n);                           break;
236                 case GroovyTokenTypes.SR_ASSIGN                     :   v.visitSrAssign(ast,n);                     break;
237                 case GroovyTokenTypes.STAR                          :   v.visitStar(ast,n);                         break;
238                 case GroovyTokenTypes.STAR_ASSIGN                   :   v.visitStarAssign(ast,n);                   break;
239                 case GroovyTokenTypes.STAR_STAR                     :   v.visitStarStar(ast,n);                     break;
240                 case GroovyTokenTypes.STAR_STAR_ASSIGN              :   v.visitStarStarAssign(ast,n);               break;
241                 case GroovyTokenTypes.STATIC_IMPORT                 :   v.visitStaticImport(ast,n);                 break;
242                 case GroovyTokenTypes.STATIC_INIT                   :   v.visitStaticInit(ast,n);                   break;
243                 case GroovyTokenTypes.STRICTFP                      :   v.visitStrictfp(ast,n);                     break;
244                 case GroovyTokenTypes.STRING_CH                     :   v.visitStringCh(ast,n);                     break;
245                 case GroovyTokenTypes.STRING_CONSTRUCTOR            :   v.visitStringConstructor(ast,n);            break;
246                 case GroovyTokenTypes.STRING_CTOR_END               :   v.visitStringCtorEnd(ast,n);                break;
247                 case GroovyTokenTypes.STRING_CTOR_MIDDLE            :   v.visitStringCtorMiddle(ast,n);             break;
248                 case GroovyTokenTypes.STRING_CTOR_START             :   v.visitStringCtorStart(ast,n);              break;
249                 case GroovyTokenTypes.STRING_LITERAL                :   v.visitStringLiteral(ast,n);                break;
250                 case GroovyTokenTypes.STRING_NL                     :   v.visitStringNl(ast,n);                     break;
251                 case GroovyTokenTypes.SUPER_CTOR_CALL               :   v.visitSuperCtorCall(ast,n);                break;
252                 case GroovyTokenTypes.TRIPLE_DOT                    :   v.visitTripleDot(ast,n);                    break;
253                 case GroovyTokenTypes.TYPE                          :   v.visitType(ast,n);                         break;
254                 case GroovyTokenTypes.TYPECAST                      :   v.visitTypecast(ast,n);                     break;
255                 case GroovyTokenTypes.TYPE_ARGUMENT                 :   v.visitTypeArgument(ast,n);                 break;
256                 case GroovyTokenTypes.TYPE_ARGUMENTS                :   v.visitTypeArguments(ast,n);                break;
257                 case GroovyTokenTypes.TYPE_LOWER_BOUNDS             :   v.visitTypeLowerBounds(ast,n);              break;
258                 case GroovyTokenTypes.TYPE_PARAMETER                :   v.visitTypeParameter(ast,n);                break;
259                 case GroovyTokenTypes.TYPE_PARAMETERS               :   v.visitTypeParameters(ast,n);               break;
260                 case GroovyTokenTypes.TYPE_UPPER_BOUNDS             :   v.visitTypeUpperBounds(ast,n);              break;
261                 case GroovyTokenTypes.UNARY_MINUS                   :   v.visitUnaryMinus(ast,n);                   break;
262                 case GroovyTokenTypes.UNARY_PLUS                    :   v.visitUnaryPlus(ast,n);                    break;
263                 case GroovyTokenTypes.UNUSED_CONST                  :   v.visitUnusedConst(ast,n);                  break;
264                 case GroovyTokenTypes.UNUSED_DO                     :   v.visitUnusedDo(ast,n);                     break;
265                 case GroovyTokenTypes.UNUSED_GOTO                   :   v.visitUnusedGoto(ast,n);                   break;
266                 case GroovyTokenTypes.VARIABLE_DEF                  :   v.visitVariableDef(ast,n);                  break;
267                 case GroovyTokenTypes.VARIABLE_PARAMETER_DEF        :   v.visitVariableParameterDef(ast,n);         break;
268                 case GroovyTokenTypes.VOCAB                         :   v.visitVocab(ast,n);                        break;
269                 case GroovyTokenTypes.WILDCARD_TYPE                 :   v.visitWildcardType(ast,n);                 break;
270                 case GroovyTokenTypes.WS                            :   v.visitWs(ast,n);                           break;
271 
272 
273                 default                                             :   v.visitDefault(ast,n);                      break;
274             }
275         } else {
276             // the supplied AST was null
277             v.visitDefault(null,n);
278         }
279     }
280     protected abstract void accept(GroovySourceAST currentNode);
281 
282     protected void accept_v_FirstChildsFirstChild_v_Child2_Child3_v_Child4_v___v_LastChild(GroovySourceAST t) {
283         openingVisit(t);
284         GroovySourceAST expr2 = t.childAt(0);
285         skip(expr2);
286         accept(expr2.childAt(0));
287         closingVisit(t);
288 
289         GroovySourceAST sibling = (GroovySourceAST)expr2.getNextSibling();
290         boolean firstSList = true;
291         while (sibling != null) {
292             if (!firstSList) {
293                 subsequentVisit(t);
294             }
295             firstSList = false;
296             accept(sibling);
297             sibling = (GroovySourceAST)sibling.getNextSibling();
298         }
299     }
300 
301     protected void accept_v_FirstChildsFirstChild_v_RestOfTheChildren(GroovySourceAST t) {
302         openingVisit(t);
303         GroovySourceAST expr = t.childAt(0);
304         skip(expr);
305         accept(expr.childAt(0));
306         closingVisit(t);
307         acceptSiblings(expr);
308     }
309 
310     protected void accept_FirstChild_v_SecondChild(GroovySourceAST t) {
311         accept(t.childAt(0));
312         subsequentVisit(t);
313         accept(t.childAt(1));
314     }
315     protected void accept_FirstChild_v_SecondChild_v(GroovySourceAST t) {
316         accept(t.childAt(0));
317         openingVisit(t);
318         accept(t.childAt(1));
319         closingVisit(t);
320     }
321 
322     protected void accept_FirstChild_v_SecondChildsChildren_v(GroovySourceAST t) {
323         accept(t.childAt(0));
324 
325         openingVisit(t);
326         GroovySourceAST secondChild = t.childAt(1);
327         if (secondChild != null) {
328             acceptChildren(secondChild);
329         }
330         closingVisit(t);
331     }
332 
333     protected void accept_FirstChild_v_SecondChild_v_ThirdChild_v(GroovySourceAST t) {
334         accept(t.childAt(0));
335         openingVisit(t);
336         accept(t.childAt(1));
337         subsequentVisit(t);
338         accept(t.childAt(2));
339         closingVisit(t);
340     }
341     protected void accept_v_FirstChild_v_SecondChild_v___LastChild_v(GroovySourceAST t) {
342         openingVisit(t);
343         GroovySourceAST child = (GroovySourceAST)t.getFirstChild();
344         if (child != null){
345             accept(child);
346             GroovySourceAST sibling = (GroovySourceAST)child.getNextSibling();
347             while (sibling != null) {
348                 subsequentVisit(t);
349                 accept(sibling);
350                 sibling = (GroovySourceAST)sibling.getNextSibling();
351             }
352         }
353         closingVisit(t);
354     }
355 
356     protected void accept_v_FirstChild_v(GroovySourceAST t) {
357         openingVisit(t);
358         accept(t.childAt(0));
359         closingVisit(t);
360     }
361 
362     protected void accept_v_AllChildren_v_Siblings(GroovySourceAST t) {
363         openingVisit(t);
364         acceptChildren(t);
365         closingVisit(t);
366         acceptSiblings(t);
367     }
368 
369     protected void accept_v_AllChildren_v(GroovySourceAST t) {
370         openingVisit(t);
371         acceptChildren(t);
372         closingVisit(t);
373     }
374 
375     protected void accept_FirstChild_v_RestOfTheChildren(GroovySourceAST t) {
376         accept(t.childAt(0));
377         openingVisit(t);
378         closingVisit(t);
379         acceptSiblings(t.childAt(0));
380     }
381     protected void accept_FirstChild_v_RestOfTheChildren_v_LastChild(GroovySourceAST t) {
382         int count = 0;
383         accept(t.childAt(0));
384         count++;
385         openingVisit(t);
386         if (t.childAt(0) != null) {
387             GroovySourceAST sibling = (GroovySourceAST)t.childAt(0).getNextSibling();
388             while (sibling != null) {
389                 if (count == t.getNumberOfChildren() - 1) {closingVisit(t);}
390                 accept(sibling);
391                 count++;
392                 sibling = (GroovySourceAST)sibling.getNextSibling();
393             }
394         }
395 
396 
397     }
398     protected void accept_FirstChild_v_RestOfTheChildren_v(GroovySourceAST t) {
399         accept(t.childAt(0));
400         openingVisit(t);
401         acceptSiblings(t.childAt(0));
402         closingVisit(t);
403     }
404     protected void accept_v_FirstChild_v_RestOfTheChildren(GroovySourceAST t) {
405         accept_v_FirstChild_v(t);
406         acceptSiblings(t.childAt(0));
407     }
408 
409     protected void accept_v_FirstChild_v_RestOfTheChildren_v(GroovySourceAST t) {
410         openingVisit(t);
411         accept(t.childAt(0));
412         subsequentVisit(t);
413         acceptSiblings(t.childAt(0));
414         closingVisit(t);
415     }
416 
417     protected void acceptSiblings(GroovySourceAST t) {
418         if (t != null) {
419             GroovySourceAST sibling = (GroovySourceAST)t.getNextSibling();
420             while (sibling != null) {
421                 accept(sibling);
422                 sibling = (GroovySourceAST)sibling.getNextSibling();
423             }
424         }
425     }
426 
427     protected void acceptChildren(GroovySourceAST t) {
428         if (t != null) {
429             GroovySourceAST child = (GroovySourceAST)t.getFirstChild();
430             if (child != null){
431                 accept(child);
432                 acceptSiblings(child);
433             }
434         }
435     }
436 
437     protected void skip(GroovySourceAST expr) {
438         unvisitedNodes.remove(expr);
439     }
440 
441     protected void openingVisit(GroovySourceAST t) {
442         unvisitedNodes.remove(t);
443 
444         int n = Visitor.OPENING_VISIT;
445         visitNode(t, n);
446     }
447 
448     protected void subsequentVisit(GroovySourceAST t) {
449         int n = Visitor.SUBSEQUENT_VISIT;
450         visitNode(t, n);
451     }
452 
453     protected void closingVisit(GroovySourceAST t) {
454         int n = Visitor.CLOSING_VISIT;
455         visitNode(t, n);
456     }
457     
458     public AST process(AST t) {
459         GroovySourceAST node = (GroovySourceAST) t;
460         
461         // process each node in turn
462         setUp(node);
463         accept(node);
464         acceptSiblings(node);
465         tearDown(node);
466         return null;
467     }    
468 }