Removed usages of getTuple() and isTupleType()

compiler/backend/src/org/jetbrains/jet/codegen/intrinsics/IntrinsicMethods.java

@@ -147,9 +147,9 @@ public class IntrinsicMethods {
         declareIntrinsicProperty(Name.identifier("CharSequence"), Name.identifier("length"), new StringLength());
         declareIntrinsicProperty(Name.identifier("String"), Name.identifier("length"), new StringLength());
 
-        Name tuple0Name = KotlinBuiltIns.getInstance().getTuple(0).getName();
+        Name unitName = KotlinBuiltIns.getInstance().getUnit().getName();
         intrinsicsMap.registerIntrinsic(
-                getClassObjectFqName(tuple0Name),
+                getClassObjectFqName(unitName),
                 Name.identifier("VALUE"), -1, new UnitValue());
 
         for (PrimitiveType type : PrimitiveType.NUMBER_TYPES) {

compiler/frontend.java/src/org/jetbrains/jet/lang/resolve/java/kotlinSignature/TypeTransformingVisitor.java

@@ -95,8 +95,9 @@ public class TypeTransformingVisitor extends JetVisitor<JetType, Void> {
         String shortName = type.getReferenceExpression().getReferencedName();
         String longName = (qualifier == null ? "" : qualifier.getText() + ".") + shortName;
 
+        // TODO remove this code when Unit will be not a synonym for Tuple0
         if (KotlinBuiltIns.UNIT_ALIAS.getName().equals(longName)) {
-            return visitCommonType(KotlinBuiltIns.getInstance().getTuple(0), type);
+            return visitCommonType(KotlinBuiltIns.getInstance().getUnit(), type);
         }
 
         return visitCommonType(longName, type);

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

@@ -429,6 +429,11 @@ public class KotlinBuiltIns {
         return getBuiltInClassByName("Number");
     }
 
+    @NotNull
+    public ClassDescriptor getUnit() {
+        return getBuiltInClassByName("Tuple0");
+    }
+
     @NotNull
     public ClassDescriptor getFunction(int parameterCount) {
         return getBuiltInClassByName("Function" + parameterCount);

idea/src/org/jetbrains/jet/plugin/JetPluginUtil.java

@@ -54,7 +54,7 @@ public class JetPluginUtil {
 
     public static boolean checkTypeIsStandard(JetType type, Project project) {
         if (KotlinBuiltIns.getInstance().isAny(type) || KotlinBuiltIns.getInstance().isNothingOrNullableNothing(type) || KotlinBuiltIns.getInstance().isUnit(type) ||
-            KotlinBuiltIns.getInstance().isTupleType(type) || KotlinBuiltIns.getInstance().isFunctionOrExtensionFunctionType(type)) {
+             KotlinBuiltIns.getInstance().isFunctionOrExtensionFunctionType(type)) {
             return true;
         }
 

idea/src/org/jetbrains/jet/plugin/references/BuiltInsReferenceResolver.java

@@ -56,7 +56,7 @@ import java.util.List;
 public class BuiltInsReferenceResolver extends AbstractProjectComponent {
     private BindingContext bindingContext = null;
 
-    private final FqName TUPLE0_FQ_NAME = DescriptorUtils.getFQName(KotlinBuiltIns.getInstance().getTuple(0)).toSafe();
+    private final FqName TUPLE0_FQ_NAME = DescriptorUtils.getFQName(KotlinBuiltIns.getInstance().getUnit()).toSafe();
 
     public BuiltInsReferenceResolver(
             Project project,