Add mpc.exe option to force output map mode #7

README.md

@@ -875,6 +875,7 @@ mpc arguments help:
   -c, --conditionalsymbol  [optional, default=empty]conditional compiler symbol
   -r, --resolvername       [optional, default=GeneratedResolver]Set resolver name
   -n, --namespace          [optional, default=MessagePack]Set namespace root name
+  -m, --usemapmode         [optional, default=false]Force use map mode serialization
 ```
 
 ```

src/MessagePack.CodeGenerator/CodeAnalysis/TypeCollector.cs

@@ -42,6 +42,7 @@ namespace MessagePack.CodeGenerator
                 typeQualificationStyle: SymbolDisplayTypeQualificationStyle.NameAndContainingTypes);
 
         readonly string csProjPath;
+        readonly bool isForceUseMap;
         readonly ReferenceSymbols typeReferences;
         readonly INamedTypeSymbol[] targetTypes;
         readonly HashSet<string> embeddedTypes = new HashSet<string>(new string[]
@@ -186,12 +187,13 @@ namespace MessagePack.CodeGenerator
 
         // --- 
 
-        public TypeCollector(string csProjPath, IEnumerable<string> conditinalSymbols, bool disallowInternal)
+        public TypeCollector(string csProjPath, IEnumerable<string> conditinalSymbols, bool disallowInternal, bool isForceUseMap)
         {
             this.csProjPath = csProjPath;
             var compilation = RoslynExtensions.GetCompilationFromProject(csProjPath, conditinalSymbols.Concat(new[] { CodegeneratorOnlyPreprocessorSymbol }).ToArray()).GetAwaiter().GetResult();
             this.typeReferences = new ReferenceSymbols(compilation);
             this.disallowInternal = disallowInternal;
+            this.isForceUseMap = isForceUseMap;
 
             targetTypes = compilation.GetNamedTypeSymbols()
                 .Where(x =>
@@ -431,9 +433,9 @@ namespace MessagePack.CodeGenerator
             var intMemebrs = new Dictionary<int, MemberSerializationInfo>();
             var stringMembers = new Dictionary<string, MemberSerializationInfo>();
 
-            if ((bool)contractAttr.ConstructorArguments[0].Value)
+            if (isForceUseMap || (bool)contractAttr.ConstructorArguments[0].Value)
             {
-                // Opt-out: All public members are serialize target except [Ignore] member.
+                // All public members are serialize target except [Ignore] member.
                 isIntKey = false;
 
                 var hiddenIntKey = 0;
@@ -483,7 +485,7 @@ namespace MessagePack.CodeGenerator
             }
             else
             {
-                // Opt-in: Only KeyAttribute members
+                // Only KeyAttribute members
                 var searchFirst = true;
                 var hiddenIntKey = 0;
 

src/MessagePack.CodeGenerator/Program.cs

@@ -17,6 +17,7 @@ namespace MessagePack.CodeGenerator
         public List<string> ConditionalSymbols { get; private set; }
         public string ResolverName { get; private set; }
         public string NamespaceRoot { get; private set; }
+        public bool IsUseMap { get; private set; }
 
         public bool IsParsed { get; set; }
 
@@ -25,6 +26,7 @@ namespace MessagePack.CodeGenerator
             ConditionalSymbols = new List<string>();
             NamespaceRoot = "MessagePack";
             ResolverName = "GeneratedResolver";
+            IsUseMap = false;
 
             var option = new OptionSet()
             {
@@ -33,6 +35,7 @@ namespace MessagePack.CodeGenerator
                 { "c|conditionalsymbol=", "[optional, default=empty]conditional compiler symbol", x => { ConditionalSymbols.AddRange(x.Split(',')); } },
                 { "r|resolvername=", "[optional, default=GeneratedResolver]Set resolver name", x => { ResolverName = x; } },
                 { "n|namespace=", "[optional, default=MessagePack]Set namespace root name", x => { NamespaceRoot = x; } },
+                { "m|usemapmode", "[optional, default=false]Force use map mode serialization", x => { IsUseMap = true; } },
             };
             if (args.Length == 0)
             {
@@ -76,7 +79,7 @@ namespace MessagePack.CodeGenerator
             var sw = Stopwatch.StartNew();
             Console.WriteLine("Project Compilation Start:" + cmdArgs.InputPath);
 
-            var collector = new TypeCollector(cmdArgs.InputPath, cmdArgs.ConditionalSymbols, true);
+            var collector = new TypeCollector(cmdArgs.InputPath, cmdArgs.ConditionalSymbols, true, cmdArgs.IsUseMap);
 
             Console.WriteLine("Project Compilation Complete:" + sw.Elapsed.ToString());
             Console.WriteLine();