Re-add void support

Author: j-f1

Sources/WebIDL/IntermediateRepresentation/IRGenerator.swift

@@ -196,7 +196,6 @@ public class IRGenerator {
                  .readWriteMaplike,
                  .readWriteSetlike:
                 fatalError("Member type \(member) not yet implemented")
-                return nil
             }
         }
 

Sources/WebIDL/Parser/Parser.swift

@@ -1635,7 +1635,8 @@ public class Parser {
          SingleType ::
          DistinguishableType
          any
-         undefinedå
+         undefined
+         void [removed from most recent spec]
          PromiseType
          */
 
@@ -1648,7 +1649,7 @@ public class Parser {
             tokens.removeFirst()
             return .any
 
-        case .terminal(.undefined):
+        case .terminal(.undefined), .terminal(.void):
             tokens.removeFirst()
             return .undefined
 
@@ -2444,7 +2445,7 @@ func firstSet(for symbol: NonTerminal) -> Set<Token> {
     case .SingleType:
         return union(
             firstSet(for: .DistinguishableType),
-            [.terminal(.any), .terminal(.undefined)],
+            [.terminal(.any), .terminal(.undefined), .terminal(.void)],
             firstSet(for: .PromiseType)
         )
 

Sources/WebIDL/Tokenizer/Terminal.swift

@@ -82,6 +82,7 @@ public enum Terminal: String, Equatable, CustomStringConvertible {
     case unsigned = "unsigned"
     case short = "short"
     case long = "long"
+    case void = "void" // deprecated
     case undefined = "undefined"
 
     case ArrayBuffer = "ArrayBuffer"

Tests/WebIDL-files/console.webidl

@@ -1,29 +1,29 @@
 [Exposed=(Window,Worker,Worklet)]
 namespace console { // but see namespace object requirements below
   // Logging
-  undefined assert(optional boolean condition = false, any... data);
-  undefined clear();
-  undefined debug(any... data);
-  undefined error(any... data);
-  undefined info(any... data);
-  undefined log(any... data);
-  undefined table(optional any tabularData, optional sequence<DOMString> properties);
-  undefined trace(any... data);
-  undefined warn(any... data);
-  undefined dir(optional any item, optional object? options);
-  undefined dirxml(any... data);
+  void assert(optional boolean condition = false, any... data);
+  void clear();
+  void debug(any... data);
+  void error(any... data);
+  void info(any... data);
+  void log(any... data);
+  void table(optional any tabularData, optional sequence<DOMString> properties);
+  void trace(any... data);
+  void warn(any... data);
+  void dir(optional any item, optional object? options);
+  void dirxml(any... data);
 
   // Counting
-  undefined count(optional DOMString label = "default");
-  undefined countReset(optional DOMString label = "default");
+  void count(optional DOMString label = "default");
+  void countReset(optional DOMString label = "default");
 
   // Grouping
-  undefined group(any... data);
-  undefined groupCollapsed(any... data);
-  undefined groupEnd();
+  void group(any... data);
+  void groupCollapsed(any... data);
+  void groupEnd();
 
   // Timing
-  undefined time(optional DOMString label = "default");
-  undefined timeLog(optional DOMString label = "default", any... data);
-  undefined timeEnd(optional DOMString label = "default");
+  void time(optional DOMString label = "default");
+  void timeLog(optional DOMString label = "default", any... data);
+  void timeEnd(optional DOMString label = "default");
 };