remove IType interface

src/main/java/de/tla2b/types/IType.java

-package de.tla2b.types;
-
-import de.tla2b.output.TypeVisitorInterface;
-
-public interface IType {
-	int UNTYPED = 0;
-	int INTEGER = 1;
-	int BOOL = 2;
-	int STRING = 3;
-	int MODELVALUE = 4;
-	int POW = 5;
-	int PAIR = 6;
-	int STRUCT = 7;
-	int TUPLEORSEQ = 8;
-	int STRUCT_OR_FUNCTION = 9;
-	int FUNCTION = 10;
-	int TUPLE = 11;
-	int TUPLE_OR_FUNCTION = 12;
-	int REAL = 13;
-
-	void apply(TypeVisitorInterface visitor);
-}

src/main/java/de/tla2b/types/TLAType.java

@@ -2,8 +2,25 @@ package de.tla2b.types;
 
 import de.be4.classicalb.core.parser.node.PExpression;
 import de.tla2b.exceptions.UnificationException;
+import de.tla2b.output.TypeVisitorInterface;
+
+public abstract class TLAType {
+
+	static int UNTYPED = 0;
+	static int INTEGER = 1;
+	static int BOOL = 2;
+	static int STRING = 3;
+	static int MODELVALUE = 4;
+	static int POW = 5;
+	static int PAIR = 6;
+	static int STRUCT = 7;
+	static int TUPLEORSEQ = 8;
+	static int STRUCT_OR_FUNCTION = 9;
+	static int FUNCTION = 10;
+	static int TUPLE = 11;
+	static int TUPLE_OR_FUNCTION = 12;
+	static int REAL = 13;
 
-public abstract class TLAType implements IType {
 	private final int kind;
 
 	public TLAType(int t) {
@@ -14,8 +31,6 @@ public abstract class TLAType implements IType {
 		return kind;
 	}
 
-	public abstract String toString();
-
 	public abstract PExpression getBNode();
 
 	public abstract boolean compare(TLAType o);
@@ -36,7 +51,6 @@ public abstract class TLAType implements IType {
 		return current;
 	}
 
-	public final String printObjectToString() {
-		return super.toString();
-	}
+	public abstract void apply(TypeVisitorInterface visitor);
+
 }