Minor, add assertion messages, fix warnings

js/js.translator/src/org/jetbrains/k2js/translate/reference/ArrayAccessTranslator.java

@@ -100,10 +100,11 @@ public class ArrayAccessTranslator extends AbstractTranslator implements AccessT
 
         List<ResolvedValueArgument> arguments = resolvedCall.getValueArgumentsByIndex();
         if (arguments == null) {
-            throw new IllegalStateException("Failed to arrange value arguments by index");
+            throw new IllegalStateException("Failed to arrange value arguments by index: " + resolvedCall.getResultingDescriptor());
         }
         ResolvedValueArgument lastArgument = arguments.get(arguments.size() - 1);
-        assert lastArgument instanceof ExpressionValueArgument: "Last argument of array-like setter must be ExpressionValueArgument";
+        assert lastArgument instanceof ExpressionValueArgument:
+                "Last argument of array-like setter must be ExpressionValueArgument: " + lastArgument;
 
         ValueArgument valueArgument = ((ExpressionValueArgument) lastArgument).getValueArgument();
         assert valueArgument != null;

js/js.translator/src/org/jetbrains/k2js/translate/reference/CallArgumentTranslator.java

@@ -160,7 +160,7 @@ public class CallArgumentTranslator extends AbstractTranslator {
         List<JsExpression> result = new ArrayList<JsExpression>(valueParameters.size());
         List<ResolvedValueArgument> valueArgumentsByIndex = resolvedCall.getValueArgumentsByIndex();
         if (valueArgumentsByIndex == null) {
-            throw new IllegalStateException("Failed to arrange value arguments by index");
+            throw new IllegalStateException("Failed to arrange value arguments by index: " + resolvedCall.getResultingDescriptor());
         }
         List<JsExpression> argsBeforeVararg = null;
         for (ValueParameterDescriptor parameterDescriptor : valueParameters) {

js/js.translator/src/org/jetbrains/k2js/translate/reference/InlinedCallExpressionTranslator.java

@@ -148,7 +148,7 @@ public final class InlinedCallExpressionTranslator extends AbstractCallExpressio
     private TemporaryVariable createAliasForArgument(@NotNull ValueParameterDescriptor parameterDescriptor) {
         List<ResolvedValueArgument> actualArguments = resolvedCall.getValueArgumentsByIndex();
         if (actualArguments == null) {
-            throw new IllegalStateException("Failed to arrange value arguments by index");
+            throw new IllegalStateException("Failed to arrange value arguments by index: " + resolvedCall.getResultingDescriptor());
         }
         ResolvedValueArgument actualArgument = actualArguments.get(parameterDescriptor.getIndex());
         JsExpression translatedArgument = translateArgument(actualArgument);