grammar,compiler: Add Support For Fixed-Width Integers

Distinguishing between signed and unsigned fixed-width integer
types must still be done.

Signed-off-by: Will Hawkins <hawkinsw@obs.cr>

Sources/Macros/Macros.swift

@@ -229,6 +229,38 @@ public struct SkipUnlessNodeType: CodeItemMacro {
   }
 }
 
+public struct SkipUnlessNodesTypes: CodeItemMacro {
+  public static func expansion(
+    of node: some FreestandingMacroExpansionSyntax, in context: some MacroExpansionContext
+  ) throws -> [CodeBlockItemSyntax] {
+
+    let arguments = node.arguments.indices
+    var arg_index = arguments.startIndex
+
+    let node_to_check = node.arguments[arg_index].expression
+
+    arg_index = arguments.index(after: arg_index)
+    guard let expected_types = node.arguments[arg_index].expression.as(ArrayExprSyntax.self) else {
+      throw MacroError(withMessage: "Node(s) to check must be in an array")
+    }
+
+    arg_index = arguments.index(after: arg_index)
+
+    let ifs = expected_types.elements.map { l in
+      "\(node_to_check).nodeType != \(l.expression)"
+    }.joined(separator: " && ")
+
+    return [
+      CodeBlockItemSyntax(
+        """
+        if \(raw: ifs) {
+          return Result.Ok(.none)
+        }
+        """)
+    ]
+  }
+}
+
 public struct MustOr: CodeItemMacro {
   public static func expansion(
     of node: some FreestandingMacroExpansionSyntax, in context: some MacroExpansionContext
@@ -261,6 +293,7 @@ public struct MustOr: CodeItemMacro {
 struct P4Macros: CompilerPlugin {
   var providingMacros: [Macro.Type] = [
     RequireResult.self, RequireErrorResult.self, UseOkResult.self, UseErrorResult.self,
-    RequireNodeType.self, SkipUnlessNodeType.self, RequireNodesType.self, MustOr.self,
+    RequireNodeType.self, SkipUnlessNodeType.self, SkipUnlessNodesTypes.self, RequireNodesType.self,
+    MustOr.self,
   ]
 }