fix hashable

Author: wangjiejacques

CodeGeneratorTests/GeneratedHash.txt

@@ -6,9 +6,9 @@ extension EquatableClazz: Hashable {
 
     var hashValue: Int {
         var hashValue = 1
-        let hashableVars: [Hashable?] = [var0, var1, var2]
+        let hashableVars: [AnyHashable?] = [var0, var1, var2]
         hashableVars.forEach {
-            hashValue = 31 * hashValue + $0?.hashValue ?? 0
+            hashValue = 31 * hashValue + ($0?.hashValue ?? 0)
         }
         return hashValue
     }

Generate.../HashableGenerator.swift

@@ -47,11 +47,11 @@ struct HashableGenerator: Generator {
         lines.append("\(indentation)var hashValue: Int {")
         lines.append("\(indentation)\(indentation)var hashValue = 1")
         let hashableVars = varSignatures.map { $0.name }.joined(separator: ", ")
-        var varsType = "[Hashable]"
+        var varsType = "[AnyHashable]"
         var varHash = "$0.hashValue"
         if (varSignatures.filter { $0.type.isOptional }).count > 0 {
-            varsType = "[Hashable?]"
-            varHash = "$0?.hashValue ?? 0"
+            varsType = "[AnyHashable?]"
+            varHash = "($0?.hashValue ?? 0)"
         }
         lines.append("\(indentation)\(indentation)let hashableVars: \(varsType) = [\(hashableVars)]")