Extract generates wrappers for internal package methods for github.com/google/s2a-go

[phanvanpeterbloomreach]

Extract generates wrappers for internal package methods for github.com/google/s2a-go

The yaegi extract is generating wrappers for internal package methods, which violates the Go language's package visibility rules. This happens when extracting github.com/google/s2a-go package.

package main

func main() {
	if err := extractSymbols(); err != nil {
		log.Fatalln(err)
	}
}

func extractSymbols() error {
	wd, err := os.Getwd()
	if err != nil {
		return err
	}

	name := filepath.Base(wd)
	ext := extract.Extractor{
		Dest: name,
	}
	var buf bytes.Buffer
	importPath, err := ext.Extract("github.com/google/s2a-go", name, &buf)
	if err != nil {
		return err
	}

	r := strings.NewReplacer("/", "-", ".", "_", "~", "_")
	oFile := r.Replace(importPath) + ".go"
	f, err := os.Create(oFile)
	if err != nil {
		return err
	}

	if _, err := io.Copy(f, &buf); err != nil {
		_ = f.Close()
		return err
	}

	if err := f.Close(); err != nil {
		return err
	}

	return nil
}

Expected generated file

// Code generated by 'yaegi extract github.com/google/s2a-go'. DO NOT EDIT.

package yaegi_experiment

import (
	"context"
	"crypto/tls"
	"github.com/google/s2a-go"
	"google.golang.org/grpc/credentials"
	"reflect"
)

func init() {
	Symbols["github.com/google/s2a-go/s2a"] = map[string]reflect.Value{
		// function, constant and variable definitions
		"AuthInfoFromContext":             reflect.ValueOf(s2a.AuthInfoFromContext),
		"AuthInfoFromPeer":                reflect.ValueOf(s2a.AuthInfoFromPeer),
		"ConnectToGoogle":                 reflect.ValueOf(s2a.ConnectToGoogle),
		"DefaultClientOptions":            reflect.ValueOf(s2a.DefaultClientOptions),
		"DefaultServerOptions":            reflect.ValueOf(s2a.DefaultServerOptions),
		"NewClientCreds":                  reflect.ValueOf(s2a.NewClientCreds),
		"NewHostname":                     reflect.ValueOf(s2a.NewHostname),
		"NewS2ADialTLSContextFunc":        reflect.ValueOf(s2a.NewS2ADialTLSContextFunc),
		"NewServerCreds":                  reflect.ValueOf(s2a.NewServerCreds),
		"NewSpiffeID":                     reflect.ValueOf(s2a.NewSpiffeID),
		"NewTLSClientConfigFactory":       reflect.ValueOf(s2a.NewTLSClientConfigFactory),
		"NewUID":                          reflect.ValueOf(s2a.NewUID),
		"ReservedCustomVerificationMode3": reflect.ValueOf(s2a.ReservedCustomVerificationMode3),
		"ReservedCustomVerificationMode4": reflect.ValueOf(s2a.ReservedCustomVerificationMode4),
		"ReservedCustomVerificationMode5": reflect.ValueOf(s2a.ReservedCustomVerificationMode5),
		"Spiffe":                          reflect.ValueOf(s2a.Spiffe),
		"Unspecified":                     reflect.ValueOf(s2a.Unspecified),

		// type definitions
		"AuthInfo":               reflect.ValueOf((*s2a.AuthInfo)(nil)),
		"ClientOptions":          reflect.ValueOf((*s2a.ClientOptions)(nil)),
		"FallbackDialer":         reflect.ValueOf((*s2a.FallbackDialer)(nil)),
		"FallbackOptions":        reflect.ValueOf((*s2a.FallbackOptions)(nil)),
		"Identity":               reflect.ValueOf((*s2a.Identity)(nil)),
		"ServerOptions":          reflect.ValueOf((*s2a.ServerOptions)(nil)),
		"TLSClientConfigFactory": reflect.ValueOf((*s2a.TLSClientConfigFactory)(nil)),
		"TLSClientConfigOptions": reflect.ValueOf((*s2a.TLSClientConfigOptions)(nil)),
		"VerificationModeType":   reflect.ValueOf((*s2a.VerificationModeType)(nil)),

		// interface wrapper definitions
		"_AuthInfo":               reflect.ValueOf((*_github_com_google_s2a_go_AuthInfo)(nil)),
		"_Identity":               reflect.ValueOf((*_github_com_google_s2a_go_Identity)(nil)),
		"_TLSClientConfigFactory": reflect.ValueOf((*_github_com_google_s2a_go_TLSClientConfigFactory)(nil)),
	}
}

// _github_com_google_s2a_go_AuthInfo is an interface wrapper for AuthInfo type
type _github_com_google_s2a_go_AuthInfo struct {
	IValue                interface{}
	WApplicationProtocol  func() string
	WAuthType             func() string
	WIsHandshakeResumed   func() bool
	WLocalCertFingerprint func() []byte
	WPeerCertFingerprint  func() []byte
	WSecurityLevel        func() credentials.SecurityLevel
}

func (W _github_com_google_s2a_go_AuthInfo) ApplicationProtocol() string {
	return W.WApplicationProtocol()
}
func (W _github_com_google_s2a_go_AuthInfo) AuthType() string {
	return W.WAuthType()
}
func (W _github_com_google_s2a_go_AuthInfo) IsHandshakeResumed() bool {
	return W.WIsHandshakeResumed()
}
func (W _github_com_google_s2a_go_AuthInfo) LocalCertFingerprint() []byte {
	return W.WLocalCertFingerprint()
}
func (W _github_com_google_s2a_go_AuthInfo) PeerCertFingerprint() []byte {
	return W.WPeerCertFingerprint()
}
func (W _github_com_google_s2a_go_AuthInfo) SecurityLevel() credentials.SecurityLevel {
	return W.WSecurityLevel()
}

// _github_com_google_s2a_go_Identity is an interface wrapper for Identity type
type _github_com_google_s2a_go_Identity struct {
	IValue interface{}
	WName  func() string
}

func (W _github_com_google_s2a_go_Identity) Name() string {
	return W.WName()
}

// _github_com_google_s2a_go_TLSClientConfigFactory is an interface wrapper for TLSClientConfigFactory type
type _github_com_google_s2a_go_TLSClientConfigFactory struct {
	IValue interface{}
	WBuild func(ctx context.Context, opts *s2a.TLSClientConfigOptions) (*tls.Config, error)
}

func (W _github_com_google_s2a_go_TLSClientConfigFactory) Build(ctx context.Context, opts *s2a.TLSClientConfigOptions) (*tls.Config, error) {
	return W.WBuild(ctx, opts)
}

Actual generated file

// Code generated by 'yaegi extract github.com/google/s2a-go'. DO NOT EDIT.

package yaegi_experiment2

import (
	"context"
	"crypto/tls"
	"github.com/google/s2a-go"
	"github.com/google/s2a-go/internal/proto/common_go_proto"
	"google.golang.org/grpc/credentials"
	"reflect"
)

func init() {
	Symbols["github.com/google/s2a-go/s2a"] = map[string]reflect.Value{
		// function, constant and variable definitions
		"AuthInfoFromContext":             reflect.ValueOf(s2a.AuthInfoFromContext),
		"AuthInfoFromPeer":                reflect.ValueOf(s2a.AuthInfoFromPeer),
		"ConnectToGoogle":                 reflect.ValueOf(s2a.ConnectToGoogle),
		"DefaultClientOptions":            reflect.ValueOf(s2a.DefaultClientOptions),
		"DefaultServerOptions":            reflect.ValueOf(s2a.DefaultServerOptions),
		"NewClientCreds":                  reflect.ValueOf(s2a.NewClientCreds),
		"NewHostname":                     reflect.ValueOf(s2a.NewHostname),
		"NewS2ADialTLSContextFunc":        reflect.ValueOf(s2a.NewS2ADialTLSContextFunc),
		"NewServerCreds":                  reflect.ValueOf(s2a.NewServerCreds),
		"NewSpiffeID":                     reflect.ValueOf(s2a.NewSpiffeID),
		"NewTLSClientConfigFactory":       reflect.ValueOf(s2a.NewTLSClientConfigFactory),
		"NewUID":                          reflect.ValueOf(s2a.NewUID),
		"ReservedCustomVerificationMode3": reflect.ValueOf(s2a.ReservedCustomVerificationMode3),
		"ReservedCustomVerificationMode4": reflect.ValueOf(s2a.ReservedCustomVerificationMode4),
		"ReservedCustomVerificationMode5": reflect.ValueOf(s2a.ReservedCustomVerificationMode5),
		"Spiffe":                          reflect.ValueOf(s2a.Spiffe),
		"Unspecified":                     reflect.ValueOf(s2a.Unspecified),

		// type definitions
		"AuthInfo":               reflect.ValueOf((*s2a.AuthInfo)(nil)),
		"ClientOptions":          reflect.ValueOf((*s2a.ClientOptions)(nil)),
		"FallbackDialer":         reflect.ValueOf((*s2a.FallbackDialer)(nil)),
		"FallbackOptions":        reflect.ValueOf((*s2a.FallbackOptions)(nil)),
		"Identity":               reflect.ValueOf((*s2a.Identity)(nil)),
		"ServerOptions":          reflect.ValueOf((*s2a.ServerOptions)(nil)),
		"TLSClientConfigFactory": reflect.ValueOf((*s2a.TLSClientConfigFactory)(nil)),
		"TLSClientConfigOptions": reflect.ValueOf((*s2a.TLSClientConfigOptions)(nil)),
		"VerificationModeType":   reflect.ValueOf((*s2a.VerificationModeType)(nil)),

		// interface wrapper definitions
		"_AuthInfo":               reflect.ValueOf((*_github_com_google_s2a_go_AuthInfo)(nil)),
		"_Identity":               reflect.ValueOf((*_github_com_google_s2a_go_Identity)(nil)),
		"_TLSClientConfigFactory": reflect.ValueOf((*_github_com_google_s2a_go_TLSClientConfigFactory)(nil)),
	}
}

// _github_com_google_s2a_go_AuthInfo is an interface wrapper for AuthInfo type
type _github_com_google_s2a_go_AuthInfo struct {
	IValue                interface{}
	WApplicationProtocol  func() string
	WAuthType             func() string
	WCiphersuite          func() common_go_proto.Ciphersuite
	WIsHandshakeResumed   func() bool
	WLocalCertFingerprint func() []byte
	WLocalIdentity        func() *common_go_proto.Identity
	WPeerCertFingerprint  func() []byte
	WPeerIdentity         func() *common_go_proto.Identity
	WSecurityLevel        func() credentials.SecurityLevel
	WTLSVersion           func() common_go_proto.TLSVersion
}

func (W _github_com_google_s2a_go_AuthInfo) ApplicationProtocol() string {
	return W.WApplicationProtocol()
}
func (W _github_com_google_s2a_go_AuthInfo) AuthType() string {
	return W.WAuthType()
}
func (W _github_com_google_s2a_go_AuthInfo) Ciphersuite() common_go_proto.Ciphersuite {
	return W.WCiphersuite()
}
func (W _github_com_google_s2a_go_AuthInfo) IsHandshakeResumed() bool {
	return W.WIsHandshakeResumed()
}
func (W _github_com_google_s2a_go_AuthInfo) LocalCertFingerprint() []byte {
	return W.WLocalCertFingerprint()
}
func (W _github_com_google_s2a_go_AuthInfo) LocalIdentity() *common_go_proto.Identity {
	return W.WLocalIdentity()
}
func (W _github_com_google_s2a_go_AuthInfo) PeerCertFingerprint() []byte {
	return W.WPeerCertFingerprint()
}
func (W _github_com_google_s2a_go_AuthInfo) PeerIdentity() *common_go_proto.Identity {
	return W.WPeerIdentity()
}
func (W _github_com_google_s2a_go_AuthInfo) SecurityLevel() credentials.SecurityLevel {
	return W.WSecurityLevel()
}
func (W _github_com_google_s2a_go_AuthInfo) TLSVersion() common_go_proto.TLSVersion {
	return W.WTLSVersion()
}

// _github_com_google_s2a_go_Identity is an interface wrapper for Identity type
type _github_com_google_s2a_go_Identity struct {
	IValue interface{}
	WName  func() string
}

func (W _github_com_google_s2a_go_Identity) Name() string {
	return W.WName()
}

// _github_com_google_s2a_go_TLSClientConfigFactory is an interface wrapper for TLSClientConfigFactory type
type _github_com_google_s2a_go_TLSClientConfigFactory struct {
	IValue interface{}
	WBuild func(ctx context.Context, opts *s2a.TLSClientConfigOptions) (*tls.Config, error)
}

func (W _github_com_google_s2a_go_TLSClientConfigFactory) Build(ctx context.Context, opts *s2a.TLSClientConfigOptions) (*tls.Config, error) {
	return W.WBuild(ctx, opts)
}

Yaegi Version

v0.16.1