toString(JetType) extracted

compiler/frontend/src/org/jetbrains/jet/lang/types/JetTypeImpl.java

@@ -24,7 +24,6 @@ import org.jetbrains.jet.lang.resolve.scopes.JetScope;
 import org.jetbrains.jet.lang.types.checker.JetTypeChecker;
 
 import java.util.Collections;
-import java.util.Iterator;
 import java.util.List;
 
 public final class JetTypeImpl extends AnnotatedImpl implements JetType {
@@ -84,19 +83,7 @@ public final class JetTypeImpl extends AnnotatedImpl implements JetType {
 
     @Override
     public String toString() {
-        return constructor + (arguments.isEmpty() ? "" : "<" + argumentsToString() + ">") + (isNullable() ? "?" : "");
-    }
-
-    private StringBuilder argumentsToString() {
-        StringBuilder stringBuilder = new StringBuilder();
-        for (Iterator<TypeProjection> iterator = arguments.iterator(); iterator.hasNext();) {
-            TypeProjection argument = iterator.next();
-            stringBuilder.append(argument);
-            if (iterator.hasNext()) {
-                stringBuilder.append(", ");
-            }
-        }
-        return stringBuilder;
+        return TypeUtils.toString(this);
     }
 
     @Override

compiler/frontend/src/org/jetbrains/jet/lang/types/TypeUtils.java

@@ -180,6 +180,24 @@ public class TypeUtils {
                 new ChainedScope(null, scopes)); // TODO : check intersectibility, don't use a chanied scope
     }
 
+    @NotNull
+    public static String toString(@NotNull JetType type) {
+        List<TypeProjection> arguments = type.getArguments();
+        return type.getConstructor() + (arguments.isEmpty() ? "" : "<" + argumentsToString(arguments) + ">") + (type.isNullable() ? "?" : "");
+    }
+
+    private static StringBuilder argumentsToString(List<TypeProjection> arguments) {
+        StringBuilder stringBuilder = new StringBuilder();
+        for (Iterator<TypeProjection> iterator = arguments.iterator(); iterator.hasNext();) {
+            TypeProjection argument = iterator.next();
+            stringBuilder.append(argument);
+            if (iterator.hasNext()) {
+                stringBuilder.append(", ");
+            }
+        }
+        return stringBuilder;
+    }
+
     private static class TypeUnifier {
         private static class TypeParameterUsage {
             private final TypeParameterDescriptor typeParameterDescriptor;