cmd/mobyextgen: Use a distinctive mobyextcontract import alias

cmd/mobyextgen/generation_test.go

@@ -131,8 +131,8 @@ type Runtime interface{ Do(ctx interface{}, req *Req) (*Resp, error) }
 	wire, err := emitWire(pt)
 	assert.NilError(t, err)
 	src := string(wire)
-	assert.Check(t, strings.Contains(src, "func RegisterServer(r grpc.ServiceRegistrar, impl p.Runtime)"), src)
-	assert.Check(t, strings.Contains(src, "func NewClient(conn grpc.ClientConnInterface) p.Runtime"), src)
+	assert.Check(t, strings.Contains(src, "func RegisterServer(r grpc.ServiceRegistrar, impl mobyextcontract.Runtime)"), src)
+	assert.Check(t, strings.Contains(src, "func NewClient(conn grpc.ClientConnInterface) mobyextcontract.Runtime"), src)
 	assert.Check(t, !strings.Contains(src, "ServerPoint"), "a non-point contract must not emit point registrations:\n%s", src)
 	assert.Check(t, !strings.Contains(src, "clientpoint"), "a non-point contract must not import the point packages:\n%s", src)
 	assert.Check(t, !strings.Contains(src, "servicev0"), "an unpublished contract must not emit typed publication APIs:\n%s", src)
@@ -163,7 +163,7 @@ var Point = extensions.DefinePoint[Runtime]("my.proto.pkg.v1")
 	assert.Check(t, strings.Contains(src, "var ClientPoint = clientpoint.Registration{"), src)
 	assert.Check(t, strings.Contains(src, "func NewRuntimeClient(cc grpc.ClientConnInterface) RuntimeClient"),
 		"ordinary point must retain its raw gRPC client:\n%s", src)
-	assert.Check(t, strings.Contains(src, "func NewClient(conn grpc.ClientConnInterface) p.Runtime"),
+	assert.Check(t, strings.Contains(src, "func NewClient(conn grpc.ClientConnInterface) mobyextcontract.Runtime"),
 		"ordinary point must expose its handwritten client:\n%s", src)
 	assert.Check(t, !strings.Contains(src, "servicev0") && !strings.Contains(src, "func Bind("),
 		"ordinary Point transport must not contain extension-side publication bindings:\n%s", src)

cmd/mobyextgen/model.go

@@ -6,7 +6,6 @@ package main
 // model
 
 type point struct {
-	pkgName       string // Go package name
 	importPath    string // package import path
 	protoPath     string // module-relative path of the .proto
 	licenseHeader string // SPDX notices from the contract interface's source file

cmd/mobyextgen/parse.go

@@ -38,21 +38,21 @@ func parseContract(dir, serviceIdentity string) (point, error) {
 	}
 
 	var files []*ast.File
-	var pkgName string
+	foundPackage := false
 	for name, pkg := range pkgs {
 		if strings.HasSuffix(name, "_test") {
 			continue
 		}
-		pkgName = name
+		foundPackage = true
 		for _, f := range pkg.Files {
 			files = append(files, f)
 		}
 	}
-	if pkgName == "" {
+	if !foundPackage {
 		return point{}, fmt.Errorf("no package found in %s", dir)
 	}
 
-	pt := point{pkgName: pkgName}
+	var pt point
 
 	if serviceIdentity != "" {
 		pkg, service, ok := splitServiceIdentity(serviceIdentity)

cmd/mobyextgen/wire.go

@@ -14,7 +14,7 @@ import (
 
 func emitWire(pt point) ([]byte, error) {
 	var b strings.Builder
-	cpkg := pt.pkgName
+	const cpkg = "mobyextcontract"
 	svc, iface := pt.service, pt.iface
 	b.WriteString(pt.licenseHeader)
 	fmt.Fprintln(&b, "// Code generated by mobyextgen. DO NOT EDIT.")