Author: julien_viet Date: 2010-11-26 16:24:55 -0500 (Fri, 26 Nov 2010) New Revision: 5304 Modified: portal/branches/navcontroller/component/web/controller/src/main/java/org/exoplatform/web/controller/regexp/RENode.java Log: preliminary visitor support Modified: portal/branches/navcontroller/component/web/controller/src/main/java/org/exoplatform/web/controller/regexp/RENode.java =================================================================== --- portal/branches/navcontroller/component/web/controller/src/main/java/org/exoplatform/web/controller/regexp/RENode.java 2010-11-26 21:11:05 UTC (rev 5303) +++ portal/branches/navcontroller/component/web/controller/src/main/java/org/exoplatform/web/controller/regexp/RENode.java 2010-11-26 21:24:55 UTC (rev 5304) @@ -28,6 +28,32 @@ public abstract String toString(); + public abstract void accept(Visitor visitor); + + /** + * A visitor. + */ + public static abstract class Visitor + { + public void enter(Disjunction disjunction) {} + public void leave(Disjunction disjunction) {} + public void enter(Alternative alternative) {} + public void leave(Alternative alternative) {} + public void enter(Group group) {} + public void leave(Group group) {} + public void visit(Assertion assertion) {} + public void visit(Dot dot) {} + public void visit(Character character) {} + public void enter(CharacterClass.Not not) {} + public void leave(CharacterClass.Not not) {} + public void enter(CharacterClass.Or or) {} + public void leave(CharacterClass.Or or) {} + public void enter(CharacterClass.And and) {} + public void leave(CharacterClass.And and) {} + public void visit(CharacterClass.Simple simple) {} + public void visit(CharacterClass.Range range) {} + } + public static class Disjunction extends RENode { @@ -66,6 +92,18 @@ return alternative.toString(); } } + + @Override + public void accept(Visitor visitor) + { + visitor.enter(this); + alternative.accept(visitor); + if (next != null) + { + next.accept(visitor); + } + visitor.leave(this); + } } public static class Alternative extends RENode @@ -104,6 +142,18 @@ return exp.toString(); } } + + @Override + public void accept(Visitor visitor) + { + visitor.enter(this); + exp.accept(visitor); + if (next != null) + { + next.accept(visitor); + } + visitor.leave(this); + } } public static abstract class Exp extends RENode @@ -158,6 +208,12 @@ private Assertion() { } + + @Override + public void accept(Visitor visitor) + { + visitor.visit(this); + } } public static abstract class Atom extends Exp @@ -179,6 +235,12 @@ { sb.append("<./>"); } + + @Override + public void accept(Visitor visitor) + { + visitor.visit(this); + } } public static final class Group extends Atom @@ -201,6 +263,14 @@ { sb.append("<(>").append(disjunction).append("</)>"); } + + @Override + public void accept(Visitor visitor) + { + visitor.enter(this); + disjunction.accept(visitor); + visitor.leave(this); + } } public static final class Character extends Atom @@ -219,6 +289,12 @@ { sb.append("<c>").append(value).append("</c>"); } + + @Override + public void accept(Visitor visitor) + { + visitor.visit(this); + } } public static abstract class CharacterClass extends Atom @@ -248,6 +324,14 @@ negated.toString(sb); sb.append("]"); } + + @Override + public void accept(Visitor visitor) + { + visitor.enter(this); + negated.accept(visitor); + visitor.leave(this); + } } public static class Or extends CharacterClass @@ -281,6 +365,15 @@ right.toString(sb); sb.append("]"); } + + @Override + public void accept(Visitor visitor) + { + visitor.enter(this); + left.accept(visitor); + right.accept(visitor); + visitor.leave(this); + } } public static class And extends CharacterClass @@ -315,6 +408,15 @@ right.toString(sb); sb.append("]"); } + + @Override + public void accept(Visitor visitor) + { + visitor.enter(this); + left.accept(visitor); + right.accept(visitor); + visitor.leave(this); + } } public static class Simple extends CharacterClass @@ -335,6 +437,12 @@ sb.append(value); sb.append("]"); } + + @Override + public void accept(Visitor visitor) + { + visitor.visit(this); + } } public static class Range extends CharacterClass @@ -361,6 +469,12 @@ sb.append(to); sb.append("]"); } + + @Override + public void accept(Visitor visitor) + { + visitor.visit(this); + } } } }