From 57474710ff641b89bdcfe1dd52a0402e475d7fe6 Mon Sep 17 00:00:00 2001
From: Rick Guo <hello@liuxi.ng>
Date: Thu, 23 Jul 2026 17:27:31 +0800
Subject: [PATCH] fix(ixgo): export comparator classfile package

---
 .../pkg/github.com/goplus/llar/cmp/export.go  | 35 +++++++++++++++++++
 internal/ixgo/pkgs.go                         |  2 ++
 internal/modules/comparator_test.go           | 19 ++++++++++
 3 files changed, 56 insertions(+)
 create mode 100644 internal/ixgo/pkg/github.com/goplus/llar/cmp/export.go

diff --git a/internal/ixgo/pkg/github.com/goplus/llar/cmp/export.go b/internal/ixgo/pkg/github.com/goplus/llar/cmp/export.go
new file mode 100644
index 00000000..542bc60d
--- /dev/null
+++ b/internal/ixgo/pkg/github.com/goplus/llar/cmp/export.go
@@ -0,0 +1,35 @@
+// export by github.com/goplus/ixgo/cmd/qexp
+
+package cmp
+
+import (
+	q "github.com/goplus/llar/cmp"
+
+	"go/constant"
+	"reflect"
+
+	"github.com/goplus/ixgo"
+)
+
+func init() {
+	ixgo.RegisterPackage(&ixgo.Package{
+		Name: "cmp",
+		Path: "github.com/goplus/llar/cmp",
+		Deps: map[string]string{
+			"github.com/goplus/llar/mod/module": "module",
+		},
+		Interfaces: map[string]reflect.Type{},
+		NamedTypes: map[string]reflect.Type{
+			"CmpApp": reflect.TypeOf((*q.CmpApp)(nil)).Elem(),
+		},
+		AliasTypes: map[string]reflect.Type{},
+		Vars:       map[string]reflect.Value{},
+		Funcs: map[string]reflect.Value{
+			"Gopt_CmpApp_Main": reflect.ValueOf(q.Gopt_CmpApp_Main),
+		},
+		TypedConsts: map[string]ixgo.TypedConst{},
+		UntypedConsts: map[string]ixgo.UntypedConst{
+			"GopPackage": {"untyped bool", constant.MakeBool(bool(q.GopPackage))},
+		},
+	})
+}
diff --git a/internal/ixgo/pkgs.go b/internal/ixgo/pkgs.go
index d7d8040a..09590db7 100644
--- a/internal/ixgo/pkgs.go
+++ b/internal/ixgo/pkgs.go
@@ -5,6 +5,7 @@
 package ixgo
 
 //go:generate qexp -outdir pkg github.com/goplus/llar/formula
+//go:generate qexp -outdir pkg github.com/goplus/llar/cmp
 //go:generate qexp -outdir pkg github.com/goplus/llar/mod/versions
 //go:generate qexp -outdir pkg golang.org/x/mod/semver
 //go:generate qexp -outdir pkg github.com/goplus/llar/x/gnu
@@ -178,6 +179,7 @@ import (
 	// _ "github.com/goplus/ixgo/pkg/testing/iotest"
 	// _ "github.com/goplus/ixgo/pkg/testing/quick"
 	// _ "github.com/goplus/ixgo/pkg/testing/slogtest"
+	_ "github.com/goplus/llar/internal/ixgo/pkg/github.com/goplus/llar/cmp"
 	_ "github.com/goplus/llar/internal/ixgo/pkg/github.com/goplus/llar/formula"
 	_ "github.com/goplus/llar/internal/ixgo/pkg/github.com/goplus/llar/mod/module"
 	_ "github.com/goplus/llar/internal/ixgo/pkg/github.com/goplus/llar/mod/versions"
diff --git a/internal/modules/comparator_test.go b/internal/modules/comparator_test.go
index d3eb1d5d..dd1ba018 100644
--- a/internal/modules/comparator_test.go
+++ b/internal/modules/comparator_test.go
@@ -3,6 +3,7 @@ package modules
 import (
 	"io/fs"
 	"os"
+	"path/filepath"
 	"reflect"
 	"testing"
 
@@ -149,6 +150,24 @@ func TestLoadComparator_Fake(t *testing.T) {
 	}
 }
 
+func TestLoadComparator_OutsideModule(t *testing.T) {
+	formulaDir, err := filepath.Abs("testdata/DaveGamble/cJSON")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// Formula repositories do not contain go.mod. For example, llarhub stores
+	// CJSON_cmp.gox beside versions.json, so loading it must not invoke go list.
+	t.Chdir(t.TempDir())
+	comp, err := loadComparatorFS(os.DirFS(formulaDir).(fs.ReadFileFS), "CJSON_cmp.gox")
+	if err != nil {
+		t.Fatalf("loadComparatorFS outside a module: %v", err)
+	}
+	if got := comp(module.Version{Version: "v1.0.0"}, module.Version{Version: "v2.0.0"}); got >= 0 {
+		t.Fatalf("comparison = %d, want a negative value", got)
+	}
+}
+
 func TestLoadComparator_InvalidFileExtension(t *testing.T) {
 	// Create a temp file with wrong extension
 	tempDir := t.TempDir()