Propagation + static method in Visitor for TokenVisitor

src/dev/peerat/parser/visitor/TokenVisitor.java

@@ -12,6 +12,12 @@ public class TokenVisitor extends Visitor<Token>{
 	private Predicate<Integer> line;
 	private Predicate<Integer> character;
 	
+	private boolean propagate;
+	
+	public TokenVisitor(boolean propagate){
+		this.propagate = propagate;
+	}
+
 	@Override
 	public boolean canVisit(Class<?> type){
 		return type.isAssignableFrom(Token.class);
@@ -19,7 +25,7 @@ public class TokenVisitor extends Visitor<Token>{
 
 	@Override
 	public boolean canPropagate(){
-		return false;
+		return this.propagate;
 	}
 	
 	public TokenVisitor named(Predicate<String> predicate){

src/dev/peerat/parser/visitor/Visitor.java

@@ -1,7 +1,17 @@
 package dev.peerat.parser.visitor;
 
+import dev.peerat.parser.Token;
+
 public abstract class Visitor<T>{
 	
+	public static Visitor<Token> allToken(){
+		return new TokenVisitor(true);
+	}
+	
+	public static Visitor<Token> token(){
+		return new TokenVisitor(false);
+	}
+	
 	public abstract boolean canVisit(Class<?> type); //TODO change "Class<?> type" into "Object element" ?
 	
 	public abstract boolean canPropagate();