cl gmxProjMain: nil if no work

cl/_testspx/multiworks/out.go

@@ -18,7 +18,7 @@ func (this *Game) MainEntry() {
 	this.Server("protos")
 }
 func (this *Game) Main() {
-	mcp.Gopt_Game_Main(this, []mcp.ToolProto{new(hello)}, []mcp.PromptProto{new(foo)})
+	mcp.Gopt_Game_Main(this, nil, []mcp.ToolProto{new(hello)}, []mcp.PromptProto{new(foo)})
 }
 func (this *foo) Main(_gop_arg0 *mcp.Tool) string {
 	this.Prompt.Main(_gop_arg0)

cl/classfile.go

@@ -484,11 +484,15 @@ func gmxProjMain(pkg *gogen.Package, parent *pkgCtx, proj *gmxProject) {
 						tslice := sigParams.At(i).Type()
 						tn := tslice.(*types.Slice).Elem().(*types.Named)
 						sp := spriteByProto(sprites, tn.Obj().Name())
-						for _, spt := range sp.types {
-							spto := pkg.Ref(spt)
-							cb.Val(new).Val(spto).Call(1)
+						if n := len(sp.types); n > 0 {
+							for _, spt := range sp.types {
+								spto := pkg.Ref(spt)
+								cb.Val(new).Val(spto).Call(1)
+							}
+							cb.SliceLitEx(tslice, n, false)
+						} else {
+							cb.Val(nil)
 						}
-						cb.SliceLitEx(tslice, len(sp.types), false)
 					}
 				}
 			}

cl/cltest/cltest.go

@@ -101,6 +101,7 @@ func LookupClass(ext string) (c *modfile.Project, ok bool) {
 			Works: []*modfile.Class{
 				{Ext: "_tool.gox", Class: "Tool", Proto: "ToolProto"},
 				{Ext: "_prompt.gox", Class: "Prompt", Proto: "PromptProto"},
+				{Ext: "_res.gox", Class: "Resource", Proto: "ResourceProto"},
 			},
 			PkgPaths: []string{"github.com/goplus/gop/cl/internal/mcp"}}, true
 	}

cl/internal/mcp/classfile.go

@@ -45,6 +45,12 @@ func (p *Prompt) Main(*Tool) string {
 	return ""
 }
 
+type Resource struct {
+}
+
+func (p *Resource) Main() {
+}
+
 type ToolProto interface {
 	Main(name string) int
 }
@@ -53,5 +59,9 @@ type PromptProto interface {
 	Main(*Tool) string
 }
 
-func Gopt_Game_Main(game interface{ initGame() }, tools []ToolProto, prompts []PromptProto) {
+type ResourceProto interface {
+	Main()
+}
+
+func Gopt_Game_Main(game interface{ initGame() }, resources []ResourceProto, tools []ToolProto, prompts []PromptProto) {
 }