Refactor KeywordArgumentsDescriptorManager.EMPTY and move it to KeywordArgumentsDescriptor

Author: andrykonchin

src/main/java/org/truffleruby/cext/CExtNodes.java

@@ -95,7 +95,6 @@
 import org.truffleruby.language.arguments.ArgumentsDescriptor;
 import org.truffleruby.language.arguments.NoKeywordArgumentsDescriptor;
 import org.truffleruby.language.arguments.KeywordArgumentsDescriptor;
-import org.truffleruby.language.arguments.KeywordArgumentsDescriptorManager;
 import org.truffleruby.language.arguments.RubyArguments;
 import org.truffleruby.language.backtrace.Backtrace;
 import org.truffleruby.language.constants.GetConstantNode;
@@ -396,7 +395,7 @@ Object sendWithoutCExtLock(VirtualFrame frame, Object receiver, RubySymbol metho
                         dispatchNode, PRIVATE, ownedProfile);
             } else {
                 return sendWithoutCExtLock(frame, receiver, method, block,
-                        KeywordArgumentsDescriptorManager.EMPTY, args,
+                        KeywordArgumentsDescriptor.EMPTY, args,
                         dispatchNode, PRIVATE, ownedProfile);
             }
         }
@@ -434,7 +433,7 @@ Object sendWithoutCExtLock(VirtualFrame frame, Object receiver, RubySymbol metho
                         dispatchNode, PUBLIC, ownedProfile);
             } else {
                 return sendWithoutCExtLock(frame, receiver, method, block,
-                        KeywordArgumentsDescriptorManager.EMPTY, args,
+                        KeywordArgumentsDescriptor.EMPTY, args,
                         dispatchNode, PUBLIC, ownedProfile);
             }
         }

src/main/java/org/truffleruby/language/arguments/KeywordArgumentsDescriptor.java

@@ -18,6 +18,9 @@
  * arguments were passed. The callee must handle that for now. */
 public final class KeywordArgumentsDescriptor extends ArgumentsDescriptor {
 
+    public static final KeywordArgumentsDescriptor EMPTY = new KeywordArgumentsDescriptor(
+            StringUtils.EMPTY_STRING_ARRAY);
+
     @CompilationFinal(dimensions = 1) private final String[] keywords;
 
     /** Use {@link KeywordArgumentsDescriptorManager} to get an instance. */

src/main/java/org/truffleruby/language/arguments/KeywordArgumentsDescriptorManager.java

@@ -16,13 +16,10 @@
 
 public final class KeywordArgumentsDescriptorManager {
 
-    public static final KeywordArgumentsDescriptor EMPTY = new KeywordArgumentsDescriptor(
-            StringUtils.EMPTY_STRING_ARRAY);
-
     private final WeakValueCache<Key, KeywordArgumentsDescriptor> CANONICAL_KEYWORD_DESCRIPTORS = new WeakValueCache<>();
 
     public KeywordArgumentsDescriptorManager() {
-        CANONICAL_KEYWORD_DESCRIPTORS.put(new Key(StringUtils.EMPTY_STRING_ARRAY), EMPTY);
+        CANONICAL_KEYWORD_DESCRIPTORS.put(new Key(StringUtils.EMPTY_STRING_ARRAY), KeywordArgumentsDescriptor.EMPTY);
     }
 
     public KeywordArgumentsDescriptor getArgumentsDescriptor(String[] keywords) {

src/main/java/org/truffleruby/language/dispatch/DispatchNode.java

@@ -27,8 +27,8 @@
 import org.truffleruby.language.RubyRootNode;
 import org.truffleruby.language.SpecialVariablesSendingNode;
 import org.truffleruby.language.arguments.ArgumentsDescriptor;
+import org.truffleruby.language.arguments.KeywordArgumentsDescriptor;
 import org.truffleruby.language.arguments.NoKeywordArgumentsDescriptor;
-import org.truffleruby.language.arguments.KeywordArgumentsDescriptorManager;
 import org.truffleruby.language.arguments.RubyArguments;
 import org.truffleruby.language.methods.CallInternalMethodNode;
 import org.truffleruby.language.methods.InternalMethod;
@@ -149,7 +149,7 @@ public Object callWithKeywords(Object receiver, String method, Object arg1,
         final Object[] rubyArgs = RubyArguments.allocate(2);
         RubyArguments.setSelf(rubyArgs, receiver);
         RubyArguments.setBlock(rubyArgs, nil);
-        RubyArguments.setDescriptor(rubyArgs, KeywordArgumentsDescriptorManager.EMPTY);
+        RubyArguments.setDescriptor(rubyArgs, KeywordArgumentsDescriptor.EMPTY);
         RubyArguments.setArgument(rubyArgs, 0, arg1);
         RubyArguments.setArgument(rubyArgs, 1, keywords);
         return execute(null, receiver, method, rubyArgs, PRIVATE);

src/main/java/org/truffleruby/language/dispatch/LiteralCallNode.java

@@ -20,7 +20,6 @@
 import com.oracle.truffle.api.CompilerDirectives.CompilationFinal;
 import org.truffleruby.language.arguments.NoKeywordArgumentsDescriptor;
 import org.truffleruby.language.arguments.KeywordArgumentsDescriptor;
-import org.truffleruby.language.arguments.KeywordArgumentsDescriptorManager;
 
 /** A literal call site in Ruby code: one of foo(), super or yield. */
 public abstract class LiteralCallNode extends RubyContextSourceNode {
@@ -58,7 +57,7 @@ protected ArgumentsDescriptor getArgumentsDescriptorAndCheckRuby2KeywordsHash(Ob
                 RubyHash hash = (RubyHash) lastArgument;
                 if (hash.ruby2_keywords) { // both branches profiled
                     copyRuby2KeywordsHashBoundary(args, hash);
-                    return KeywordArgumentsDescriptorManager.EMPTY;
+                    return KeywordArgumentsDescriptor.EMPTY;
                 } else {
                     if (!notRuby2KeywordsHashProfile) {
                         CompilerDirectives.transferToInterpreterAndInvalidate();

src/main/java/org/truffleruby/parser/YARPTranslator.java

@@ -61,7 +61,7 @@
 import org.truffleruby.language.RubyRootNode;
 import org.truffleruby.language.RubyTopLevelRootNode;
 import org.truffleruby.language.arguments.ArgumentsDescriptor;
-import org.truffleruby.language.arguments.KeywordArgumentsDescriptorManager;
+import org.truffleruby.language.arguments.KeywordArgumentsDescriptor;
 import org.truffleruby.language.arguments.NoKeywordArgumentsDescriptor;
 import org.truffleruby.language.arguments.ProfileArgumentNodeGen;
 import org.truffleruby.language.arguments.ReadSelfNode;
@@ -809,7 +809,7 @@ private ArgumentsDescriptor getKeywordArgumentsDescriptor(Nodes.Node[] arguments
         Nodes.Node last = ArrayUtils.getLast(arguments);
         // if `...` then we know there are no literal keyword arguments, only **kwrest
         if (last instanceof Nodes.ForwardingArgumentsNode) {
-            return KeywordArgumentsDescriptorManager.EMPTY;
+            return KeywordArgumentsDescriptor.EMPTY;
         }
         // if there are no keywords the descriptor is NoKeywordArgumentsDescriptor.INSTANCE
         if (!(last instanceof Nodes.KeywordHashNode keywords)) {
@@ -1826,7 +1826,7 @@ public RubyNode visitForwardingSuperNode(Nodes.ForwardingSuperNode node) {
         final RubyNode[] reloadSequence = reloadTranslator.reload(parametersNode);
 
         var descriptor = (parametersNode.keywords.length > 0 || parametersNode.keyword_rest != null)
-                ? KeywordArgumentsDescriptorManager.EMPTY
+                ? KeywordArgumentsDescriptor.EMPTY
                 : NoKeywordArgumentsDescriptor.INSTANCE;
         final int restParamIndex = reloadTranslator.getRestParameterIndex();
         final RubyNode arguments = new ReadZSuperArgumentsNode(restParamIndex, reloadSequence);