access modifiers support for fields

src/org/jetbrains/jet/j2k/ast/Field.java

@@ -1,7 +1,10 @@
 package org.jetbrains.jet.j2k.ast;
 
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.jet.j2k.util.AstUtil;
 
+import java.util.LinkedList;
+import java.util.List;
 import java.util.Set;
 
 /**
@@ -20,10 +23,30 @@ public class Field extends Node {
     myInitializer = initializer;
   }
 
+  private String accessModifier() {
+    for (String m : myModifiers)
+      if (m.equals(Modifier.PUBLIC) || m.equals(Modifier.PROTECTED) || m.equals(Modifier.PRIVATE))
+        return m;
+    return EMPTY; // package local converted to internal, but we use internal by default
+  }
+
+  String modifiersToKotlin() {
+    List<String> modifierList = new LinkedList<String>();
+
+    modifierList.add(accessModifier());
+
+    modifierList.add(myModifiers.contains(Modifier.FINAL) ? "val" : "var");
+
+    if (modifierList.size() > 0)
+      return AstUtil.join(modifierList, SPACE) + SPACE;
+
+    return EMPTY;
+  }
+
   @NotNull
   @Override
   public String toKotlin() {
-    String modifier = (myModifiers.contains(Modifier.FINAL) ? "val" : "var") + SPACE;
+    String modifier = modifiersToKotlin();
 
     if (myInitializer.toKotlin().isEmpty()) // TODO: remove
       return modifier + myIdentifier.toKotlin() + SPACE + COLON + SPACE + myType.toKotlin();

test/org/jetbrains/jet/j2k/ast/EnumTest.java

@@ -69,7 +69,7 @@ public class EnumTest extends JetTestCaseBase {
         "RED(23)\n" +
         "YELLOW(24)\n" +
         "BLUE(25)\n" +
-        "var code : Int\n" +
+        "private var code : Int\n" +
         "public fun getCode() : Int {\n" +
         "return code\n" +
         "}\n" +

test/org/jetbrains/jet/j2k/ast/FieldTest.java

@@ -27,4 +27,20 @@ public class FieldTest extends JetTestCaseBase {
       "val f : Foo? = Foo(1, 2)"
     );
   }
+
+  public void testPrivateField() throws Exception {
+    Assert.assertEquals(methodToSingleLineKotlin("private Foo f;"), "private var f : Foo?");
+  }
+
+  public void testProtectedField() throws Exception {
+    Assert.assertEquals(methodToSingleLineKotlin("protected Foo f;"), "protected var f : Foo?");
+  }
+
+  public void testPublicField() throws Exception {
+    Assert.assertEquals(methodToSingleLineKotlin("public Foo f;"), "public var f : Foo?");
+  }
+
+  public void testInternalField() throws Exception {
+    Assert.assertEquals(methodToSingleLineKotlin("Foo f;"), "var f : Foo?");
+  }
 }

test/org/jetbrains/jet/j2k/ast/TraitTest.java

@@ -36,9 +36,9 @@ public class TraitTest extends JetTestCaseBase {
         "}"
     ),
       "trait INode {\n" +
-        "val IN : String? = \"in\"\n" +
-        "val AT : String? = \"@\"\n" +
-        "val COMMA_WITH_SPACE : String? = (COMMA + SPACE)\n" +
+        "public val IN : String? = \"in\"\n" +
+        "public val AT : String? = \"@\"\n" +
+        "public val COMMA_WITH_SPACE : String? = (COMMA + SPACE)\n" +
         "}"
     );
   }