Fork starlib/util for serialization libs.

Prevents pulling in excessive transitive deps. See: https://github.com/kubernetes/kubernetes/pull/98946
2026-05-17 18:25:26 +00:00 · 2021-02-24 08:49:25 -08:00
parent 9a94c5ecd3
commit 61dcb3f548
7 changed files with 323 additions and 14 deletions
--- a/kyaml/fn/runtime/starlark/context.go
+++ b/kyaml/fn/runtime/starlark/context.go
@@ -8,10 +8,10 @@ import (
 	"os"
 	"strings"

-	"github.com/qri-io/starlib/util"
 	"go.starlark.net/starlark"
 	"go.starlark.net/starlarkstruct"
 	"sigs.k8s.io/kustomize/kyaml/errors"
+	"sigs.k8s.io/kustomize/kyaml/internal/forked/github.com/qri-io/starlib/util"
 	"sigs.k8s.io/kustomize/kyaml/openapi"
 	"sigs.k8s.io/kustomize/kyaml/yaml"
 )
--- a/kyaml/fn/runtime/starlark/starlark.go
+++ b/kyaml/fn/runtime/starlark/starlark.go
@@ -10,10 +10,10 @@ import (
 	"io/ioutil"
 	"net/http"

-	"github.com/qri-io/starlib/util"
 	"go.starlark.net/starlark"
 	"sigs.k8s.io/kustomize/kyaml/errors"
 	"sigs.k8s.io/kustomize/kyaml/fn/runtime/runtimeutil"
+	"sigs.k8s.io/kustomize/kyaml/internal/forked/github.com/qri-io/starlib/util"
 	"sigs.k8s.io/kustomize/kyaml/kio/filters"
 	"sigs.k8s.io/kustomize/kyaml/yaml"
 )
--- a/kyaml/go.mod
+++ b/kyaml/go.mod
@@ -11,7 +11,7 @@ require (
 	github.com/google/go-cmp v0.3.0
 	github.com/markbates/pkger v0.17.1
 	github.com/monochromegane/go-gitignore v0.0.0-20200626010858-205db1a8cc00
-	github.com/qri-io/starlib v0.4.2-0.20200213133954-ff2e8cd5ef8d
+	github.com/pkg/errors v0.8.0
 	github.com/sergi/go-diff v1.1.0
 	github.com/spf13/cobra v1.0.0
 	github.com/spf13/pflag v1.0.5
--- a/kyaml/go.sum
+++ b/kyaml/go.sum
@@ -1,8 +1,6 @@
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-github.com/360EntSecGroup-Skylar/excelize v1.4.1/go.mod h1:vnax29X2usfl7HHkBrX5EvSCJcmH3dT9luvxzu8iGAE=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
-github.com/PuerkitoBio/goquery v1.5.0/go.mod h1:qD2PgZ9lccMbQlc7eEOjaeRlFQON7xY8kdmcsrnKqMg=
 github.com/PuerkitoBio/purell v1.1.0/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbtSwDGJws/X0=
 github.com/PuerkitoBio/purell v1.1.1 h1:WEQqlqaGbrPkxLJWfBwQmfEAE1Z7ONdDLqrN38tNFfI=
 github.com/PuerkitoBio/purell v1.1.1/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbtSwDGJws/X0=
@@ -12,7 +10,6 @@ github.com/agnivade/levenshtein v1.0.1/go.mod h1:CURSv5d9Uaml+FovSIICkLbAUZ9S4Rq
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
 github.com/andreyvit/diff v0.0.0-20170406064948-c7f18ee00883/go.mod h1:rCTlJbsFo29Kk6CurOXKm700vrz8f0KW0JNfpkRJY/8=
-github.com/andybalholm/cascadia v1.0.0/go.mod h1:GsXiBklL0woXo1j/WYWtSYYC4ouU9PqHO0sqidkEA4Y=
 github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
 github.com/asaskevich/govalidator v0.0.0-20180720115003-f9ffefc3facf/go.mod h1:lB+ZfQJz7igIIfQNfa7Ml4HSf2uFQQRzpGGRXenZAgY=
 github.com/asaskevich/govalidator v0.0.0-20190424111038-f61b66f89f4a h1:idn718Q4B6AGu/h5Sxe66HYVdqdGu2l9Iebqhi/AEoA=
@@ -37,7 +34,6 @@ github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZm
 github.com/dgryski/go-sip13 v0.0.0-20181026042036-e10d5fee7954/go.mod h1:vAd38F8PWV+bWy6jNmig1y/TA+kYO4g3RSRF0IAv0no=
 github.com/docker/go-units v0.3.3/go.mod h1:fgPhTUdO+D/Jk86RDLlptpiXQzgHJF7gydDDbaIK4Dk=
 github.com/docker/go-units v0.4.0/go.mod h1:fgPhTUdO+D/Jk86RDLlptpiXQzgHJF7gydDDbaIK4Dk=
-github.com/dustmop/soup v1.1.2-0.20190516214245-38228baa104e/go.mod h1:CgNC6SGbT+Xb8wGGvzilttZL1mc5sQ/5KkcxsZttMIk=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
 github.com/globalsign/mgo v0.0.0-20180905125535-1ca0a4f7cbcb/go.mod h1:xkRDCp4j0OGD1HRkm4kmhM+pmpv3AKq5SU7GMg4oO/Q=
@@ -148,14 +144,13 @@ github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5
 github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
 github.com/mitchellh/mapstructure v1.1.2 h1:fmNYVwqnSfB9mZU6OS2O6GsXM+wcskZDuKQzvN1EDeE=
 github.com/mitchellh/mapstructure v1.1.2/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh9fWfEaFds41c1Y=
-github.com/mohae/deepcopy v0.0.0-20170929034955-c48cc78d4826/go.mod h1:TaXosZuwdSHYgviHp1DAtfrULt5eUgsSMsZf+YrPgl8=
 github.com/monochromegane/go-gitignore v0.0.0-20200626010858-205db1a8cc00 h1:n6/2gBQ3RWajuToeY6ZtZTIKv2v7ThUy5KKusIT0yc0=
 github.com/monochromegane/go-gitignore v0.0.0-20200626010858-205db1a8cc00/go.mod h1:Pm3mSP3c5uWn86xMLZ5Sa7JB9GsEZySvHYXCTK4E9q4=
 github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
 github.com/oklog/ulid v1.3.1/go.mod h1:CirwcVhetQ6Lv90oh/F+FBtV6XMibvdAFo93nm5qn4U=
-github.com/paulmach/orb v0.1.3/go.mod h1:VFlX/8C+IQ1p6FTRRKzKoOPJnvEtA5G0Veuqwbu//Vk=
 github.com/pborman/uuid v1.2.0/go.mod h1:X/NO0urCmaxf9VXbdlT7C2Yzkj2IKimNn4k+gtPdI/k=
 github.com/pelletier/go-toml v1.2.0/go.mod h1:5z9KED0ma1S8pY6P1sdut58dfprrGBbd/94hg7ilaic=
+github.com/pkg/errors v0.8.0 h1:WdK/asTD0HN+q6hsWO3/vpuAkAr+tw6aNJNDFFf0+qw=
 github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
@@ -168,8 +163,6 @@ github.com/prometheus/common v0.4.0/go.mod h1:TNfzLD0ON7rHzMJeJkieUDPYmFC7Snx/y8
 github.com/prometheus/procfs v0.0.0-20181005140218-185b4288413d/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk=
 github.com/prometheus/procfs v0.0.0-20190507164030-5867b95ac084/go.mod h1:TjEm7ze935MbeOT/UhFTIMYKhuLP4wbCsTZCD3I8kEA=
 github.com/prometheus/tsdb v0.7.1/go.mod h1:qhTCs0VvXwvX/y3TZrWD7rabWM+ijKTux40TwIPHuXU=
-github.com/qri-io/starlib v0.4.2-0.20200213133954-ff2e8cd5ef8d h1:K6eOUihrFLdZjZnA4XlRp864fmWXv9YTIk7VPLhRacA=
-github.com/qri-io/starlib v0.4.2-0.20200213133954-ff2e8cd5ef8d/go.mod h1:7DPO4domFU579Ga6E61sB9VFNaniPVwJP5C4bBCu3wA=
 github.com/rogpeppe/fastuuid v0.0.0-20150106093220-6724a57986af/go.mod h1:XWv6SoW27p1b0cqNHllgS5HIMJraePCO15w5zCzIWYg=
 github.com/russross/blackfriday/v2 v2.0.1/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
 github.com/sergi/go-diff v1.0.0/go.mod h1:0CfEIISq7TuYL3j771MWULgwwjU+GofnZX9QAmXWZgo=
@@ -193,7 +186,6 @@ github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+
 github.com/stretchr/objx v0.2.0 h1:Hbg2NidpLE8veEBkEZTL3CvlkUIVzuU9jDplZO54c48=
 github.com/stretchr/objx v0.2.0/go.mod h1:qt09Ya8vawLte6SNmTgCsAVtYtaKzEcn8ATUoHMkEqE=
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
-github.com/stretchr/testify v1.2.3-0.20181224173747-660f15d67dbb/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
@@ -211,7 +203,6 @@ go.mongodb.org/mongo-driver v1.0.3/go.mod h1:u7ryQJ+DOzQmeO7zB6MHyr8jkEQvC8vH7qL
 go.mongodb.org/mongo-driver v1.1.1/go.mod h1:u7ryQJ+DOzQmeO7zB6MHyr8jkEQvC8vH7qLUO4lqsUM=
 go.mongodb.org/mongo-driver v1.1.2 h1:jxcFYjlkl8xaERsgLo+RNquI0epW6zuy/ZRQs6jnrFA=
 go.mongodb.org/mongo-driver v1.1.2/go.mod h1:u7ryQJ+DOzQmeO7zB6MHyr8jkEQvC8vH7qLUO4lqsUM=
-go.starlark.net v0.0.0-20190528202925-30ae18b8564f/go.mod h1:c1/X6cHgvdXj6pUlmWKMkuqRnW4K8x2vwt6JAaaircg=
 go.starlark.net v0.0.0-20200306205701-8dd3e2ee1dd5 h1:+FNtrFTmVw0YZGpBGX56XDee331t6JAXeK2bcyhLOOc=
 go.starlark.net v0.0.0-20200306205701-8dd3e2ee1dd5/go.mod h1:nmDLcffg48OtT/PSW0Hg7FvpRQsQh5OSqIylirxKC7o=
 go.uber.org/atomic v1.4.0/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
@@ -224,7 +215,6 @@ golang.org/x/crypto v0.0.0-20190611184440-5c40567a22f8/go.mod h1:yigFU9vqHzYiE8U
 golang.org/x/crypto v0.0.0-20190617133340-57b3e21c3d56/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
 golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
-golang.org/x/net v0.0.0-20180218175443-cbe0f9307d01/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20181005035420-146acd28ed58/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20181114220301-adae6a3d119a/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
--- a/kyaml/internal/forked/github.com/qri-io/starlib/util/LICENSE
+++ b/kyaml/internal/forked/github.com/qri-io/starlib/util/LICENSE
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2018 QRI, Inc.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
--- a/kyaml/internal/forked/github.com/qri-io/starlib/util/doc.go
+++ b/kyaml/internal/forked/github.com/qri-io/starlib/util/doc.go
@@ -0,0 +1,25 @@
+// The MIT License (MIT)
+
+// Copyright (c) 2018 QRI, Inc.
+
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+// Package util is forked from https://github.com/qri-io/starlib in order to prune
+// excessive transitive dependencies from pulling in that library.
+package util
--- a/kyaml/internal/forked/github.com/qri-io/starlib/util/util.go
+++ b/kyaml/internal/forked/github.com/qri-io/starlib/util/util.go
@@ -0,0 +1,273 @@
+// The MIT License (MIT)
+
+// Copyright (c) 2018 QRI, Inc.
+
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package util
+
+import (
+	"fmt"
+
+	"github.com/pkg/errors"
+	"go.starlark.net/starlark"
+	"go.starlark.net/starlarkstruct"
+)
+
+// // asString unquotes a starlark string value
+// func asString(x starlark.Value) (string, error) {
+// 	return strconv.Unquote(x.String())
+// }
+
+// IsEmptyString checks is a starlark string is empty ("" for a go string)
+// starlark.String.String performs repr-style quotation, which is necessary
+// for the starlark.Value contract but a frequent source of errors in API
+// clients. This helper method makes sure it'll work properly
+func IsEmptyString(s starlark.String) bool {
+	return s.String() == `""`
+}
+
+// Unmarshal decodes a starlark.Value into it's golang counterpart
+//nolint:nakedret
+func Unmarshal(x starlark.Value) (val interface{}, err error) {
+	switch v := x.(type) {
+	case starlark.NoneType:
+		val = nil
+	case starlark.Bool:
+		val = v.Truth() == starlark.True
+	case starlark.Int:
+		val, err = starlark.AsInt32(x)
+	case starlark.Float:
+		if f, ok := starlark.AsFloat(x); !ok {
+			err = fmt.Errorf("couldn't parse float")
+		} else {
+			val = f
+		}
+	case starlark.String:
+		val = v.GoString()
+	// case starlibtime.Time:
+	// 	val = time.Time(v)
+	case *starlark.Dict:
+		var (
+			dictVal starlark.Value
+			pval    interface{}
+			kval    interface{}
+			keys    []interface{}
+			vals    []interface{}
+			// key as interface if found one key is not a string
+			ki bool
+		)
+
+		for _, k := range v.Keys() {
+			dictVal, _, err = v.Get(k)
+			if err != nil {
+				return
+			}
+
+			pval, err = Unmarshal(dictVal)
+			if err != nil {
+				err = fmt.Errorf("unmarshaling starlark value: %w", err)
+				return
+			}
+
+			kval, err = Unmarshal(k)
+			if err != nil {
+				err = fmt.Errorf("unmarshaling starlark key: %w", err)
+				return
+			}
+
+			if _, ok := kval.(string); !ok {
+				// found key as not a string
+				ki = true
+			}
+
+			keys = append(keys, kval)
+			vals = append(vals, pval)
+		}
+
+		// prepare result
+
+		rs := map[string]interface{}{}
+		ri := map[interface{}]interface{}{}
+
+		for i, key := range keys {
+			// key as interface
+			if ki {
+				ri[key] = vals[i]
+			} else {
+				rs[key.(string)] = vals[i]
+			}
+		}
+
+		if ki {
+			val = ri // map[interface{}]interface{}
+		} else {
+			val = rs // map[string]interface{}
+		}
+	case *starlark.List:
+		var (
+			i       int
+			listVal starlark.Value
+			iter    = v.Iterate()
+			value   = make([]interface{}, v.Len())
+		)
+
+		defer iter.Done()
+		for iter.Next(&listVal) {
+			value[i], err = Unmarshal(listVal)
+			if err != nil {
+				return
+			}
+			i++
+		}
+		val = value
+	case starlark.Tuple:
+		var (
+			i        int
+			tupleVal starlark.Value
+			iter     = v.Iterate()
+			value    = make([]interface{}, v.Len())
+		)
+
+		defer iter.Done()
+		for iter.Next(&tupleVal) {
+			value[i], err = Unmarshal(tupleVal)
+			if err != nil {
+				return
+			}
+			i++
+		}
+		val = value
+	case *starlark.Set:
+		fmt.Println("errnotdone: SET")
+		err = fmt.Errorf("sets aren't yet supported")
+	case *starlarkstruct.Struct:
+		if _var, ok := v.Constructor().(Unmarshaler); ok {
+			err = _var.UnmarshalStarlark(x)
+			if err != nil {
+				err = errors.Wrapf(err, "failed marshal %q to Starlark object", v.Constructor().Type())
+				return
+			}
+			val = _var
+		} else {
+			err = fmt.Errorf("constructor object from *starlarkstruct.Struct not supported Marshaler to starlark object: %s", v.Constructor().Type())
+		}
+	default:
+		fmt.Println("errbadtype:", x.Type())
+		err = fmt.Errorf("unrecognized starlark type: %s", x.Type())
+	}
+	return
+}
+
+// Marshal turns go values into starlark types
+//nolint:nakedret
+func Marshal(data interface{}) (v starlark.Value, err error) {
+	switch x := data.(type) {
+	case nil:
+		v = starlark.None
+	case bool:
+		v = starlark.Bool(x)
+	case string:
+		v = starlark.String(x)
+	case int:
+		v = starlark.MakeInt(x)
+	case int8:
+		v = starlark.MakeInt(int(x))
+	case int16:
+		v = starlark.MakeInt(int(x))
+	case int32:
+		v = starlark.MakeInt(int(x))
+	case int64:
+		v = starlark.MakeInt64(x)
+	case uint:
+		v = starlark.MakeUint(x)
+	case uint8:
+		v = starlark.MakeUint(uint(x))
+	case uint16:
+		v = starlark.MakeUint(uint(x))
+	case uint32:
+		v = starlark.MakeUint(uint(x))
+	case uint64:
+		v = starlark.MakeUint64(x)
+	case float32:
+		v = starlark.Float(float64(x))
+	case float64:
+		v = starlark.Float(x)
+	// case time.Time:
+	// 	v = starlibtime.Time(x)
+	case []interface{}:
+		var elems = make([]starlark.Value, len(x))
+		for i, val := range x {
+			elems[i], err = Marshal(val)
+			if err != nil {
+				return
+			}
+		}
+		v = starlark.NewList(elems)
+	case map[interface{}]interface{}:
+		dict := &starlark.Dict{}
+		var elem starlark.Value
+		for ki, val := range x {
+			var key starlark.Value
+			key, err = Marshal(ki)
+			if err != nil {
+				return
+			}
+
+			elem, err = Marshal(val)
+			if err != nil {
+				return
+			}
+			if err = dict.SetKey(key, elem); err != nil {
+				return
+			}
+		}
+		v = dict
+	case map[string]interface{}:
+		dict := &starlark.Dict{}
+		var elem starlark.Value
+		for key, val := range x {
+			elem, err = Marshal(val)
+			if err != nil {
+				return
+			}
+			if err = dict.SetKey(starlark.String(key), elem); err != nil {
+				return
+			}
+		}
+		v = dict
+	case Marshaler:
+		v, err = x.MarshalStarlark()
+	default:
+		return starlark.None, fmt.Errorf("unrecognized type: %#v", x)
+	}
+	return
+}
+
+// Unmarshaler is the interface use to unmarshal starlark custom types.
+type Unmarshaler interface {
+	// UnmarshalStarlark unmarshal a starlark object to custom type.
+	UnmarshalStarlark(starlark.Value) error
+}
+
+// Marshaler is the interface use to marshal starlark custom types.
+type Marshaler interface {
+	// MarshalStarlark marshal a custom type to starlark object.
+	MarshalStarlark() (starlark.Value, error)
+}