Implement new Lua bindings file and commands for CLI tool.

Directory.Packages.props

@@ -4,5 +4,6 @@
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="16.11.0" />
     <PackageVersion Include="NUnit" Version="3.13.2" />
     <PackageVersion Include="NUnit3TestAdapter" Version="4.0.0" />
+    <PackageVersion Include="MoonSharp" Version="2.0.0" />
   </ItemGroup>
 </Project>

src/CLI/CLI.cs

@@ -156,7 +156,12 @@ namespace CppSharp
                     GetFilesFromPath(args, errorMessages);
                 }
                 else if (File.Exists(args))
+                {
+                    if (Path.GetExtension(args) == ".lua")
+                        options.LuaBindingsFiles.Add(args);
+                    else
                         options.HeaderFiles.Add(args);
+                }
                 else
                 {
                     errorMessages.Add($"File '{args}' could not be found.");
@@ -207,7 +212,7 @@ namespace CppSharp
             }
         }
 
-        static void GetGeneratorKind(string generator, List<string> errorMessages)
+        public static void GetGeneratorKind(string generator, List<string> errorMessages)
         {
             foreach (GeneratorKind generatorKind in GeneratorKind.Registered)
             {
@@ -221,7 +226,7 @@ namespace CppSharp
             errorMessages.Add($"Unknown generator kind: {generator}.");
         }
 
-        static void GetDestinationPlatform(string platform, List<string> errorMessages)
+        public static void GetDestinationPlatform(string platform, List<string> errorMessages)
         {
             switch (platform.ToLower())
             {
@@ -242,7 +247,7 @@ namespace CppSharp
             errorMessages.Add($"Unknown target platform: {platform}. Defaulting to {options.Platform}");
         }
 
-        static void GetDestinationArchitecture(string architecture, List<string> errorMessages)
+        public static void GetDestinationArchitecture(string architecture, List<string> errorMessages)
         {
             switch (architecture.ToLower())
             {
@@ -284,6 +289,13 @@ namespace CppSharp
                 return;
             }
 
+            var luaContext = new LuaContext(options, errorMessages);
+            foreach (var luaFile in options.LuaBindingsFiles)
+            {
+                Directory.SetCurrentDirectory(Path.GetDirectoryName(luaFile));
+                luaContext.LoadFile(luaFile);
+            }
+
             var gen = new Generator(options);
 
             var validOptions = gen.ValidateOptions(errorMessages);

src/CLI/CppSharp.CLI.csproj

@@ -5,5 +5,6 @@
   
   <ItemGroup>
     <ProjectReference Include="..\Generator\CppSharp.Generator.csproj" />
+    <PackageReference Include="MoonSharp" />
   </ItemGroup>
 </Project>

src/CLI/LuaContext.cs

@@ -0,0 +1,85 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using CppSharp;
+using MoonSharp.Interpreter;
+
+class LuaContext
+{
+    public Script script;
+    public Options options;
+    public List<string> errorMessages;
+
+    public string CurrentModule;
+
+    public LuaContext(Options options, List<string> errorMessages)
+    {
+        this.options = options;
+        this.errorMessages = errorMessages;
+
+        script = new Script(CoreModules.Basic | CoreModules.String |
+                            CoreModules.Table | CoreModules.TableIterators);
+
+        script.Globals["generator"] = (string kind) =>
+        {
+            CLI.GetGeneratorKind(kind, errorMessages);
+        };
+
+        script.Globals["platform"] = (string platform) =>
+        {
+            CLI.GetDestinationPlatform(platform, errorMessages);
+        };
+
+        script.Globals["architecture"] = (string arch) =>
+        {
+            CLI.GetDestinationArchitecture(arch, errorMessages);
+        };
+
+        script.Globals["output"] = script.Globals["location"] = (string dir) =>
+        {
+            options.OutputDir = dir;
+        };
+
+        script.Globals["includedirs"] = (List<string> dirs) =>
+        {
+            foreach (var dir in dirs)
+            {
+                options.IncludeDirs.Add(dir);
+            }
+        };
+
+        script.Globals["module"] = (string name) =>
+        {
+            CurrentModule = name;
+            options.OutputFileName = name;
+        };
+
+        script.Globals["namespace"] = (string name) =>
+        {
+            options.OutputNamespace = name;
+        };
+
+        script.Globals["headers"] = (List<string> files) =>
+        {
+            foreach (var file in files)
+            {
+                options.HeaderFiles.Add(file);
+            }
+        };
+    }
+
+    public DynValue LoadFile(string luaFile)
+    {
+        var code = script.LoadFile(luaFile);
+
+        try
+        {
+            return code.Function.Call();
+        }
+        catch (Exception ex)
+        {
+            Console.Error.WriteLine($"Error running {Path.GetFileName(luaFile)}:\n{ex.Message}");
+            return null;
+        }
+    }
+}

src/CLI/Options.cs

@@ -13,6 +13,8 @@ namespace CppSharp
 
     class Options
     {
+        public List<string> LuaBindingsFiles { get; } = new List<string>();
+
         public List<string> HeaderFiles { get; } = new List<string>();
 
         public List<string> IncludeDirs { get; } = new List<string>();

src/Generator/Generators/QuickJS/QuickJSGenerator.cs

@@ -45,8 +45,8 @@ namespace CppSharp.Generators.C
         {
             var outputs = new List<CodeGenerator>();
 
-            var header = new QuickJSHeaders(Context, units);
+            // var header = new QuickJSHeaders(Context, units);
-            outputs.Add(header);
+            // outputs.Add(header);
 
             var source = new QuickJSSources(Context, units);
             outputs.Add(source);