diff --git a/cloudformation/resources/aws-serverless-function_dynamodbevent.go b/cloudformation/resources/aws-serverless-function_dynamodbevent.go index af7933fc12..ceb6bd5b88 100644 --- a/cloudformation/resources/aws-serverless-function_dynamodbevent.go +++ b/cloudformation/resources/aws-serverless-function_dynamodbevent.go @@ -7,9 +7,9 @@ import "github.com/awslabs/goformation/cloudformation/policies" type AWSServerlessFunction_DynamoDBEvent struct { // BatchSize AWS CloudFormation Property - // Required: true + // Required: false // See: https://github.com/awslabs/serverless-application-model/blob/master/versions/2016-10-31.md#dynamodb - BatchSize int `json:"BatchSize"` + BatchSize int `json:"BatchSize,omitempty"` // StartingPosition AWS CloudFormation Property // Required: true diff --git a/cloudformation/resources/awsserverlessapi_definitionuri.go b/cloudformation/resources/awsserverlessapi_definitionuri.go index 821914efab..b29829ba1d 100644 --- a/cloudformation/resources/awsserverlessapi_definitionuri.go +++ b/cloudformation/resources/awsserverlessapi_definitionuri.go @@ -4,8 +4,6 @@ import ( "sort" "encoding/json" - - "github.com/mitchellh/mapstructure" ) // AWSServerlessApi_DefinitionUri is a helper struct that can hold either a String or S3Location value @@ -55,8 +53,9 @@ func (r *AWSServerlessApi_DefinitionUri) UnmarshalJSON(b []byte) error { r.String = &val case map[string]interface{}: + val = val // This ensures val is used to stop an error - mapstructure.Decode(val, &r.S3Location) + json.Unmarshal(b, &r.S3Location) case []interface{}: diff --git a/cloudformation/resources/awsserverlessapplication_location.go b/cloudformation/resources/awsserverlessapplication_location.go index 1db8eb2f56..d0d6c327e3 100644 --- a/cloudformation/resources/awsserverlessapplication_location.go +++ b/cloudformation/resources/awsserverlessapplication_location.go @@ -4,8 +4,6 @@ import ( "sort" "encoding/json" - - "github.com/mitchellh/mapstructure" ) // AWSServerlessApplication_Location is a helper struct that can hold either a String or ApplicationLocation value @@ -55,8 +53,9 @@ func (r *AWSServerlessApplication_Location) UnmarshalJSON(b []byte) error { r.String = &val case map[string]interface{}: + val = val // This ensures val is used to stop an error - mapstructure.Decode(val, &r.ApplicationLocation) + json.Unmarshal(b, &r.ApplicationLocation) case []interface{}: diff --git a/cloudformation/resources/awsserverlessfunction_codeuri.go b/cloudformation/resources/awsserverlessfunction_codeuri.go index 197d588640..50d82cb274 100644 --- a/cloudformation/resources/awsserverlessfunction_codeuri.go +++ b/cloudformation/resources/awsserverlessfunction_codeuri.go @@ -4,8 +4,6 @@ import ( "sort" "encoding/json" - - "github.com/mitchellh/mapstructure" ) // AWSServerlessFunction_CodeUri is a helper struct that can hold either a String or S3Location value @@ -55,8 +53,9 @@ func (r *AWSServerlessFunction_CodeUri) UnmarshalJSON(b []byte) error { r.String = &val case map[string]interface{}: + val = val // This ensures val is used to stop an error - mapstructure.Decode(val, &r.S3Location) + json.Unmarshal(b, &r.S3Location) case []interface{}: diff --git a/cloudformation/resources/awsserverlessfunction_events.go b/cloudformation/resources/awsserverlessfunction_events.go index 0d68f84e4e..3c00a72aa2 100644 --- a/cloudformation/resources/awsserverlessfunction_events.go +++ b/cloudformation/resources/awsserverlessfunction_events.go @@ -2,8 +2,6 @@ package resources import ( "encoding/json" - - "github.com/mitchellh/mapstructure" ) // AWSServerlessFunction_Events is a helper struct that can hold either a String or String value @@ -49,10 +47,11 @@ func (r *AWSServerlessFunction_Events) UnmarshalJSON(b []byte) error { r.StringArray = &val case map[string]interface{}: + val = val // This ensures val is used to stop an error case []interface{}: - mapstructure.Decode(val, &r.StringArray) + json.Unmarshal(b, &r.StringArray) } diff --git a/cloudformation/resources/awsserverlessfunction_policies.go b/cloudformation/resources/awsserverlessfunction_policies.go index e4ea3e625e..7e3daca96b 100644 --- a/cloudformation/resources/awsserverlessfunction_policies.go +++ b/cloudformation/resources/awsserverlessfunction_policies.go @@ -4,8 +4,6 @@ import ( "sort" "encoding/json" - - "github.com/mitchellh/mapstructure" ) // AWSServerlessFunction_Policies is a helper struct that can hold either a String, String, IAMPolicyDocument, or IAMPolicyDocument value @@ -70,14 +68,15 @@ func (r *AWSServerlessFunction_Policies) UnmarshalJSON(b []byte) error { r.StringArray = &val case map[string]interface{}: + val = val // This ensures val is used to stop an error - mapstructure.Decode(val, &r.IAMPolicyDocument) + json.Unmarshal(b, &r.IAMPolicyDocument) case []interface{}: - mapstructure.Decode(val, &r.StringArray) + json.Unmarshal(b, &r.StringArray) - mapstructure.Decode(val, &r.IAMPolicyDocumentArray) + json.Unmarshal(b, &r.IAMPolicyDocumentArray) } diff --git a/cloudformation/resources/awsserverlessfunction_properties.go b/cloudformation/resources/awsserverlessfunction_properties.go index 235ccb78de..1a4959f1ff 100644 --- a/cloudformation/resources/awsserverlessfunction_properties.go +++ b/cloudformation/resources/awsserverlessfunction_properties.go @@ -4,8 +4,6 @@ import ( "sort" "encoding/json" - - "github.com/mitchellh/mapstructure" ) // AWSServerlessFunction_Properties is a helper struct that can hold either a S3Event, SNSEvent, SQSEvent, KinesisEvent, DynamoDBEvent, ApiEvent, ScheduleEvent, CloudWatchEventEvent, IoTRuleEvent, or AlexaSkillEvent value @@ -91,26 +89,27 @@ func (r *AWSServerlessFunction_Properties) UnmarshalJSON(b []byte) error { switch val := typecheck.(type) { case map[string]interface{}: + val = val // This ensures val is used to stop an error - mapstructure.Decode(val, &r.S3Event) + json.Unmarshal(b, &r.S3Event) - mapstructure.Decode(val, &r.SNSEvent) + json.Unmarshal(b, &r.SNSEvent) - mapstructure.Decode(val, &r.SQSEvent) + json.Unmarshal(b, &r.SQSEvent) - mapstructure.Decode(val, &r.KinesisEvent) + json.Unmarshal(b, &r.KinesisEvent) - mapstructure.Decode(val, &r.DynamoDBEvent) + json.Unmarshal(b, &r.DynamoDBEvent) - mapstructure.Decode(val, &r.ApiEvent) + json.Unmarshal(b, &r.ApiEvent) - mapstructure.Decode(val, &r.ScheduleEvent) + json.Unmarshal(b, &r.ScheduleEvent) - mapstructure.Decode(val, &r.CloudWatchEventEvent) + json.Unmarshal(b, &r.CloudWatchEventEvent) - mapstructure.Decode(val, &r.IoTRuleEvent) + json.Unmarshal(b, &r.IoTRuleEvent) - mapstructure.Decode(val, &r.AlexaSkillEvent) + json.Unmarshal(b, &r.AlexaSkillEvent) case []interface{}: diff --git a/generate/property_test.go b/generate/property_test.go index 2ff07ea9dd..848da43a56 100644 --- a/generate/property_test.go +++ b/generate/property_test.go @@ -68,6 +68,22 @@ var _ = Describe("Goformation Code Generator", func() { }) + Context("properly marshals and unmarshals polymorphic values", func() { + + property := []byte(`{"Properties":{"Bucket":"asd","Events":"LATEST"},"Type":"S3"}`) + + result := &resources.AWSServerlessFunction_EventSource{} + err := json.Unmarshal(property, result) + output, err2 := json.Marshal(result) + + It("should marshal and unmarhal to same value", func() { + Expect(err).To(BeNil()) + Expect(err2).To(BeNil()) + Expect(output).To(Equal(property)) + }) + + }) + Context("properly Marshals best value", func() { expected := []byte(`{"BatchSize":10,"Stream":"arn"}`) diff --git a/generate/sam-2016-10-31.json b/generate/sam-2016-10-31.json index f233be9457..5a02c999d1 100644 --- a/generate/sam-2016-10-31.json +++ b/generate/sam-2016-10-31.json @@ -506,7 +506,7 @@ }, "BatchSize": { "Documentation": "https://github.com/awslabs/serverless-application-model/blob/master/versions/2016-10-31.md#dynamodb", - "Required": true, + "Required": false, "PrimitiveType": "Integer", "UpdateType": "Immutable" } diff --git a/generate/templates/polymorphic-property.template b/generate/templates/polymorphic-property.template index 81b194898f..9540ef7590 100644 --- a/generate/templates/polymorphic-property.template +++ b/generate/templates/polymorphic-property.template @@ -5,9 +5,6 @@ import ( "sort" {{end}} "encoding/json" - {{ if (or .Property.Types .Property.ItemTypes .Property.PrimitiveItemTypes)}} - "github.com/mitchellh/mapstructure" - {{end}} ) // {{.Name}} is a helper struct that can hold either a {{.TypesJoined}} value @@ -88,16 +85,17 @@ func (r *{{.Name}}) UnmarshalJSON(b []byte) error { {{end}} case map[string]interface{}: + val = val // This ensures val is used to stop an error {{range $type := $.Property.Types}} - mapstructure.Decode(val, &r.{{$type}}) + json.Unmarshal(b, &r.{{$type}}) {{end}} case []interface{}: {{range $type := $.Property.PrimitiveItemTypes}} - mapstructure.Decode(val, &r.{{$type}}Array) + json.Unmarshal(b, &r.{{$type}}Array) {{end}} {{range $type := $.Property.ItemTypes}} - mapstructure.Decode(val, &r.{{$type}}Array) + json.Unmarshal(b, &r.{{$type}}Array) {{end}} } diff --git a/go.sum b/go.sum index 1889483ace..dd85aa5d16 100644 --- a/go.sum +++ b/go.sum @@ -9,8 +9,6 @@ github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORN github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ= github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE= github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI= -github.com/mitchellh/mapstructure v1.1.0 h1:PoCJ/Ct9du6caE+91v8ov4CLjO4XEBgkPk/dF1v43eo= -github.com/mitchellh/mapstructure v1.1.0/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh9fWfEaFds41c1Y= github.com/mitchellh/mapstructure v1.1.2 h1:fmNYVwqnSfB9mZU6OS2O6GsXM+wcskZDuKQzvN1EDeE= github.com/mitchellh/mapstructure v1.1.2/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh9fWfEaFds41c1Y= github.com/onsi/ginkgo v1.5.0 h1:uZr+v/TFDdYkdA+j02sPO1kA5owrfjBGCJAogfIyThE= diff --git a/schema/sam.go b/schema/sam.go index bdd328ffe0..bdf7133502 100644 --- a/schema/sam.go +++ b/schema/sam.go @@ -40274,7 +40274,6 @@ var SamSchema = `{ } }, "required": [ - "BatchSize", "StartingPosition", "Stream" ], diff --git a/schema/sam.schema.json b/schema/sam.schema.json index 9ed9fcedbd..3289da2bf7 100644 --- a/schema/sam.schema.json +++ b/schema/sam.schema.json @@ -40271,7 +40271,6 @@ } }, "required": [ - "BatchSize", "StartingPosition", "Stream" ], diff --git a/vendor/github.com/mitchellh/mapstructure/.travis.yml b/vendor/github.com/mitchellh/mapstructure/.travis.yml deleted file mode 100644 index 1689c7d735..0000000000 --- a/vendor/github.com/mitchellh/mapstructure/.travis.yml +++ /dev/null @@ -1,8 +0,0 @@ -language: go - -go: - - "1.11.x" - - tip - -script: - - go test diff --git a/vendor/github.com/mitchellh/mapstructure/CHANGELOG.md b/vendor/github.com/mitchellh/mapstructure/CHANGELOG.md deleted file mode 100644 index 3b3cb723f8..0000000000 --- a/vendor/github.com/mitchellh/mapstructure/CHANGELOG.md +++ /dev/null @@ -1,21 +0,0 @@ -## 1.1.2 - -* Fix error when decode hook decodes interface implementation into interface - type. [GH-140] - -## 1.1.1 - -* Fix panic that can happen in `decodePtr` - -## 1.1.0 - -* Added `StringToIPHookFunc` to convert `string` to `net.IP` and `net.IPNet` [GH-133] -* Support struct to struct decoding [GH-137] -* If source map value is nil, then destination map value is nil (instead of empty) -* If source slice value is nil, then destination slice value is nil (instead of empty) -* If source pointer is nil, then destination pointer is set to nil (instead of - allocated zero value of type) - -## 1.0.0 - -* Initial tagged stable release. diff --git a/vendor/github.com/mitchellh/mapstructure/LICENSE b/vendor/github.com/mitchellh/mapstructure/LICENSE deleted file mode 100644 index f9c841a51e..0000000000 --- a/vendor/github.com/mitchellh/mapstructure/LICENSE +++ /dev/null @@ -1,21 +0,0 @@ -The MIT License (MIT) - -Copyright (c) 2013 Mitchell Hashimoto - -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. diff --git a/vendor/github.com/mitchellh/mapstructure/README.md b/vendor/github.com/mitchellh/mapstructure/README.md deleted file mode 100644 index 0018dc7d9f..0000000000 --- a/vendor/github.com/mitchellh/mapstructure/README.md +++ /dev/null @@ -1,46 +0,0 @@ -# mapstructure [![Godoc](https://godoc.org/github.com/mitchellh/mapstructure?status.svg)](https://godoc.org/github.com/mitchellh/mapstructure) - -mapstructure is a Go library for decoding generic map values to structures -and vice versa, while providing helpful error handling. - -This library is most useful when decoding values from some data stream (JSON, -Gob, etc.) where you don't _quite_ know the structure of the underlying data -until you read a part of it. You can therefore read a `map[string]interface{}` -and use this library to decode it into the proper underlying native Go -structure. - -## Installation - -Standard `go get`: - -``` -$ go get github.com/mitchellh/mapstructure -``` - -## Usage & Example - -For usage and examples see the [Godoc](http://godoc.org/github.com/mitchellh/mapstructure). - -The `Decode` function has examples associated with it there. - -## But Why?! - -Go offers fantastic standard libraries for decoding formats such as JSON. -The standard method is to have a struct pre-created, and populate that struct -from the bytes of the encoded format. This is great, but the problem is if -you have configuration or an encoding that changes slightly depending on -specific fields. For example, consider this JSON: - -```json -{ - "type": "person", - "name": "Mitchell" -} -``` - -Perhaps we can't populate a specific structure without first reading -the "type" field from the JSON. We could always do two passes over the -decoding of the JSON (reading the "type" first, and the rest later). -However, it is much simpler to just decode this into a `map[string]interface{}` -structure, read the "type" key, then use something like this library -to decode it into the proper structure. diff --git a/vendor/github.com/mitchellh/mapstructure/decode_hooks.go b/vendor/github.com/mitchellh/mapstructure/decode_hooks.go deleted file mode 100644 index 1f0abc65ab..0000000000 --- a/vendor/github.com/mitchellh/mapstructure/decode_hooks.go +++ /dev/null @@ -1,217 +0,0 @@ -package mapstructure - -import ( - "errors" - "fmt" - "net" - "reflect" - "strconv" - "strings" - "time" -) - -// typedDecodeHook takes a raw DecodeHookFunc (an interface{}) and turns -// it into the proper DecodeHookFunc type, such as DecodeHookFuncType. -func typedDecodeHook(h DecodeHookFunc) DecodeHookFunc { - // Create variables here so we can reference them with the reflect pkg - var f1 DecodeHookFuncType - var f2 DecodeHookFuncKind - - // Fill in the variables into this interface and the rest is done - // automatically using the reflect package. - potential := []interface{}{f1, f2} - - v := reflect.ValueOf(h) - vt := v.Type() - for _, raw := range potential { - pt := reflect.ValueOf(raw).Type() - if vt.ConvertibleTo(pt) { - return v.Convert(pt).Interface() - } - } - - return nil -} - -// DecodeHookExec executes the given decode hook. This should be used -// since it'll naturally degrade to the older backwards compatible DecodeHookFunc -// that took reflect.Kind instead of reflect.Type. -func DecodeHookExec( - raw DecodeHookFunc, - from reflect.Type, to reflect.Type, - data interface{}) (interface{}, error) { - switch f := typedDecodeHook(raw).(type) { - case DecodeHookFuncType: - return f(from, to, data) - case DecodeHookFuncKind: - return f(from.Kind(), to.Kind(), data) - default: - return nil, errors.New("invalid decode hook signature") - } -} - -// ComposeDecodeHookFunc creates a single DecodeHookFunc that -// automatically composes multiple DecodeHookFuncs. -// -// The composed funcs are called in order, with the result of the -// previous transformation. -func ComposeDecodeHookFunc(fs ...DecodeHookFunc) DecodeHookFunc { - return func( - f reflect.Type, - t reflect.Type, - data interface{}) (interface{}, error) { - var err error - for _, f1 := range fs { - data, err = DecodeHookExec(f1, f, t, data) - if err != nil { - return nil, err - } - - // Modify the from kind to be correct with the new data - f = nil - if val := reflect.ValueOf(data); val.IsValid() { - f = val.Type() - } - } - - return data, nil - } -} - -// StringToSliceHookFunc returns a DecodeHookFunc that converts -// string to []string by splitting on the given sep. -func StringToSliceHookFunc(sep string) DecodeHookFunc { - return func( - f reflect.Kind, - t reflect.Kind, - data interface{}) (interface{}, error) { - if f != reflect.String || t != reflect.Slice { - return data, nil - } - - raw := data.(string) - if raw == "" { - return []string{}, nil - } - - return strings.Split(raw, sep), nil - } -} - -// StringToTimeDurationHookFunc returns a DecodeHookFunc that converts -// strings to time.Duration. -func StringToTimeDurationHookFunc() DecodeHookFunc { - return func( - f reflect.Type, - t reflect.Type, - data interface{}) (interface{}, error) { - if f.Kind() != reflect.String { - return data, nil - } - if t != reflect.TypeOf(time.Duration(5)) { - return data, nil - } - - // Convert it by parsing - return time.ParseDuration(data.(string)) - } -} - -// StringToIPHookFunc returns a DecodeHookFunc that converts -// strings to net.IP -func StringToIPHookFunc() DecodeHookFunc { - return func( - f reflect.Type, - t reflect.Type, - data interface{}) (interface{}, error) { - if f.Kind() != reflect.String { - return data, nil - } - if t != reflect.TypeOf(net.IP{}) { - return data, nil - } - - // Convert it by parsing - ip := net.ParseIP(data.(string)) - if ip == nil { - return net.IP{}, fmt.Errorf("failed parsing ip %v", data) - } - - return ip, nil - } -} - -// StringToIPNetHookFunc returns a DecodeHookFunc that converts -// strings to net.IPNet -func StringToIPNetHookFunc() DecodeHookFunc { - return func( - f reflect.Type, - t reflect.Type, - data interface{}) (interface{}, error) { - if f.Kind() != reflect.String { - return data, nil - } - if t != reflect.TypeOf(net.IPNet{}) { - return data, nil - } - - // Convert it by parsing - _, net, err := net.ParseCIDR(data.(string)) - return net, err - } -} - -// StringToTimeHookFunc returns a DecodeHookFunc that converts -// strings to time.Time. -func StringToTimeHookFunc(layout string) DecodeHookFunc { - return func( - f reflect.Type, - t reflect.Type, - data interface{}) (interface{}, error) { - if f.Kind() != reflect.String { - return data, nil - } - if t != reflect.TypeOf(time.Time{}) { - return data, nil - } - - // Convert it by parsing - return time.Parse(layout, data.(string)) - } -} - -// WeaklyTypedHook is a DecodeHookFunc which adds support for weak typing to -// the decoder. -// -// Note that this is significantly different from the WeaklyTypedInput option -// of the DecoderConfig. -func WeaklyTypedHook( - f reflect.Kind, - t reflect.Kind, - data interface{}) (interface{}, error) { - dataVal := reflect.ValueOf(data) - switch t { - case reflect.String: - switch f { - case reflect.Bool: - if dataVal.Bool() { - return "1", nil - } - return "0", nil - case reflect.Float32: - return strconv.FormatFloat(dataVal.Float(), 'f', -1, 64), nil - case reflect.Int: - return strconv.FormatInt(dataVal.Int(), 10), nil - case reflect.Slice: - dataType := dataVal.Type() - elemKind := dataType.Elem().Kind() - if elemKind == reflect.Uint8 { - return string(dataVal.Interface().([]uint8)), nil - } - case reflect.Uint: - return strconv.FormatUint(dataVal.Uint(), 10), nil - } - } - - return data, nil -} diff --git a/vendor/github.com/mitchellh/mapstructure/error.go b/vendor/github.com/mitchellh/mapstructure/error.go deleted file mode 100644 index 47a99e5af3..0000000000 --- a/vendor/github.com/mitchellh/mapstructure/error.go +++ /dev/null @@ -1,50 +0,0 @@ -package mapstructure - -import ( - "errors" - "fmt" - "sort" - "strings" -) - -// Error implements the error interface and can represents multiple -// errors that occur in the course of a single decode. -type Error struct { - Errors []string -} - -func (e *Error) Error() string { - points := make([]string, len(e.Errors)) - for i, err := range e.Errors { - points[i] = fmt.Sprintf("* %s", err) - } - - sort.Strings(points) - return fmt.Sprintf( - "%d error(s) decoding:\n\n%s", - len(e.Errors), strings.Join(points, "\n")) -} - -// WrappedErrors implements the errwrap.Wrapper interface to make this -// return value more useful with the errwrap and go-multierror libraries. -func (e *Error) WrappedErrors() []error { - if e == nil { - return nil - } - - result := make([]error, len(e.Errors)) - for i, e := range e.Errors { - result[i] = errors.New(e) - } - - return result -} - -func appendErrors(errors []string, err error) []string { - switch e := err.(type) { - case *Error: - return append(errors, e.Errors...) - default: - return append(errors, e.Error()) - } -} diff --git a/vendor/github.com/mitchellh/mapstructure/go.mod b/vendor/github.com/mitchellh/mapstructure/go.mod deleted file mode 100644 index d2a7125620..0000000000 --- a/vendor/github.com/mitchellh/mapstructure/go.mod +++ /dev/null @@ -1 +0,0 @@ -module github.com/mitchellh/mapstructure diff --git a/vendor/github.com/mitchellh/mapstructure/mapstructure.go b/vendor/github.com/mitchellh/mapstructure/mapstructure.go deleted file mode 100644 index 256ee63fbf..0000000000 --- a/vendor/github.com/mitchellh/mapstructure/mapstructure.go +++ /dev/null @@ -1,1149 +0,0 @@ -// Package mapstructure exposes functionality to convert an arbitrary -// map[string]interface{} into a native Go structure. -// -// The Go structure can be arbitrarily complex, containing slices, -// other structs, etc. and the decoder will properly decode nested -// maps and so on into the proper structures in the native Go struct. -// See the examples to see what the decoder is capable of. -package mapstructure - -import ( - "encoding/json" - "errors" - "fmt" - "reflect" - "sort" - "strconv" - "strings" -) - -// DecodeHookFunc is the callback function that can be used for -// data transformations. See "DecodeHook" in the DecoderConfig -// struct. -// -// The type should be DecodeHookFuncType or DecodeHookFuncKind. -// Either is accepted. Types are a superset of Kinds (Types can return -// Kinds) and are generally a richer thing to use, but Kinds are simpler -// if you only need those. -// -// The reason DecodeHookFunc is multi-typed is for backwards compatibility: -// we started with Kinds and then realized Types were the better solution, -// but have a promise to not break backwards compat so we now support -// both. -type DecodeHookFunc interface{} - -// DecodeHookFuncType is a DecodeHookFunc which has complete information about -// the source and target types. -type DecodeHookFuncType func(reflect.Type, reflect.Type, interface{}) (interface{}, error) - -// DecodeHookFuncKind is a DecodeHookFunc which knows only the Kinds of the -// source and target types. -type DecodeHookFuncKind func(reflect.Kind, reflect.Kind, interface{}) (interface{}, error) - -// DecoderConfig is the configuration that is used to create a new decoder -// and allows customization of various aspects of decoding. -type DecoderConfig struct { - // DecodeHook, if set, will be called before any decoding and any - // type conversion (if WeaklyTypedInput is on). This lets you modify - // the values before they're set down onto the resulting struct. - // - // If an error is returned, the entire decode will fail with that - // error. - DecodeHook DecodeHookFunc - - // If ErrorUnused is true, then it is an error for there to exist - // keys in the original map that were unused in the decoding process - // (extra keys). - ErrorUnused bool - - // ZeroFields, if set to true, will zero fields before writing them. - // For example, a map will be emptied before decoded values are put in - // it. If this is false, a map will be merged. - ZeroFields bool - - // If WeaklyTypedInput is true, the decoder will make the following - // "weak" conversions: - // - // - bools to string (true = "1", false = "0") - // - numbers to string (base 10) - // - bools to int/uint (true = 1, false = 0) - // - strings to int/uint (base implied by prefix) - // - int to bool (true if value != 0) - // - string to bool (accepts: 1, t, T, TRUE, true, True, 0, f, F, - // FALSE, false, False. Anything else is an error) - // - empty array = empty map and vice versa - // - negative numbers to overflowed uint values (base 10) - // - slice of maps to a merged map - // - single values are converted to slices if required. Each - // element is weakly decoded. For example: "4" can become []int{4} - // if the target type is an int slice. - // - WeaklyTypedInput bool - - // Metadata is the struct that will contain extra metadata about - // the decoding. If this is nil, then no metadata will be tracked. - Metadata *Metadata - - // Result is a pointer to the struct that will contain the decoded - // value. - Result interface{} - - // The tag name that mapstructure reads for field names. This - // defaults to "mapstructure" - TagName string -} - -// A Decoder takes a raw interface value and turns it into structured -// data, keeping track of rich error information along the way in case -// anything goes wrong. Unlike the basic top-level Decode method, you can -// more finely control how the Decoder behaves using the DecoderConfig -// structure. The top-level Decode method is just a convenience that sets -// up the most basic Decoder. -type Decoder struct { - config *DecoderConfig -} - -// Metadata contains information about decoding a structure that -// is tedious or difficult to get otherwise. -type Metadata struct { - // Keys are the keys of the structure which were successfully decoded - Keys []string - - // Unused is a slice of keys that were found in the raw value but - // weren't decoded since there was no matching field in the result interface - Unused []string -} - -// Decode takes an input structure and uses reflection to translate it to -// the output structure. output must be a pointer to a map or struct. -func Decode(input interface{}, output interface{}) error { - config := &DecoderConfig{ - Metadata: nil, - Result: output, - } - - decoder, err := NewDecoder(config) - if err != nil { - return err - } - - return decoder.Decode(input) -} - -// WeakDecode is the same as Decode but is shorthand to enable -// WeaklyTypedInput. See DecoderConfig for more info. -func WeakDecode(input, output interface{}) error { - config := &DecoderConfig{ - Metadata: nil, - Result: output, - WeaklyTypedInput: true, - } - - decoder, err := NewDecoder(config) - if err != nil { - return err - } - - return decoder.Decode(input) -} - -// DecodeMetadata is the same as Decode, but is shorthand to -// enable metadata collection. See DecoderConfig for more info. -func DecodeMetadata(input interface{}, output interface{}, metadata *Metadata) error { - config := &DecoderConfig{ - Metadata: metadata, - Result: output, - } - - decoder, err := NewDecoder(config) - if err != nil { - return err - } - - return decoder.Decode(input) -} - -// WeakDecodeMetadata is the same as Decode, but is shorthand to -// enable both WeaklyTypedInput and metadata collection. See -// DecoderConfig for more info. -func WeakDecodeMetadata(input interface{}, output interface{}, metadata *Metadata) error { - config := &DecoderConfig{ - Metadata: metadata, - Result: output, - WeaklyTypedInput: true, - } - - decoder, err := NewDecoder(config) - if err != nil { - return err - } - - return decoder.Decode(input) -} - -// NewDecoder returns a new decoder for the given configuration. Once -// a decoder has been returned, the same configuration must not be used -// again. -func NewDecoder(config *DecoderConfig) (*Decoder, error) { - val := reflect.ValueOf(config.Result) - if val.Kind() != reflect.Ptr { - return nil, errors.New("result must be a pointer") - } - - val = val.Elem() - if !val.CanAddr() { - return nil, errors.New("result must be addressable (a pointer)") - } - - if config.Metadata != nil { - if config.Metadata.Keys == nil { - config.Metadata.Keys = make([]string, 0) - } - - if config.Metadata.Unused == nil { - config.Metadata.Unused = make([]string, 0) - } - } - - if config.TagName == "" { - config.TagName = "mapstructure" - } - - result := &Decoder{ - config: config, - } - - return result, nil -} - -// Decode decodes the given raw interface to the target pointer specified -// by the configuration. -func (d *Decoder) Decode(input interface{}) error { - return d.decode("", input, reflect.ValueOf(d.config.Result).Elem()) -} - -// Decodes an unknown data type into a specific reflection value. -func (d *Decoder) decode(name string, input interface{}, outVal reflect.Value) error { - var inputVal reflect.Value - if input != nil { - inputVal = reflect.ValueOf(input) - - // We need to check here if input is a typed nil. Typed nils won't - // match the "input == nil" below so we check that here. - if inputVal.Kind() == reflect.Ptr && inputVal.IsNil() { - input = nil - } - } - - if input == nil { - // If the data is nil, then we don't set anything, unless ZeroFields is set - // to true. - if d.config.ZeroFields { - outVal.Set(reflect.Zero(outVal.Type())) - - if d.config.Metadata != nil && name != "" { - d.config.Metadata.Keys = append(d.config.Metadata.Keys, name) - } - } - return nil - } - - if !inputVal.IsValid() { - // If the input value is invalid, then we just set the value - // to be the zero value. - outVal.Set(reflect.Zero(outVal.Type())) - if d.config.Metadata != nil && name != "" { - d.config.Metadata.Keys = append(d.config.Metadata.Keys, name) - } - return nil - } - - if d.config.DecodeHook != nil { - // We have a DecodeHook, so let's pre-process the input. - var err error - input, err = DecodeHookExec( - d.config.DecodeHook, - inputVal.Type(), outVal.Type(), input) - if err != nil { - return fmt.Errorf("error decoding '%s': %s", name, err) - } - } - - var err error - outputKind := getKind(outVal) - switch outputKind { - case reflect.Bool: - err = d.decodeBool(name, input, outVal) - case reflect.Interface: - err = d.decodeBasic(name, input, outVal) - case reflect.String: - err = d.decodeString(name, input, outVal) - case reflect.Int: - err = d.decodeInt(name, input, outVal) - case reflect.Uint: - err = d.decodeUint(name, input, outVal) - case reflect.Float32: - err = d.decodeFloat(name, input, outVal) - case reflect.Struct: - err = d.decodeStruct(name, input, outVal) - case reflect.Map: - err = d.decodeMap(name, input, outVal) - case reflect.Ptr: - err = d.decodePtr(name, input, outVal) - case reflect.Slice: - err = d.decodeSlice(name, input, outVal) - case reflect.Array: - err = d.decodeArray(name, input, outVal) - case reflect.Func: - err = d.decodeFunc(name, input, outVal) - default: - // If we reached this point then we weren't able to decode it - return fmt.Errorf("%s: unsupported type: %s", name, outputKind) - } - - // If we reached here, then we successfully decoded SOMETHING, so - // mark the key as used if we're tracking metainput. - if d.config.Metadata != nil && name != "" { - d.config.Metadata.Keys = append(d.config.Metadata.Keys, name) - } - - return err -} - -// This decodes a basic type (bool, int, string, etc.) and sets the -// value to "data" of that type. -func (d *Decoder) decodeBasic(name string, data interface{}, val reflect.Value) error { - if val.IsValid() && val.Elem().IsValid() { - return d.decode(name, data, val.Elem()) - } - - dataVal := reflect.ValueOf(data) - - // If the input data is a pointer, and the assigned type is the dereference - // of that exact pointer, then indirect it so that we can assign it. - // Example: *string to string - if dataVal.Kind() == reflect.Ptr && dataVal.Type().Elem() == val.Type() { - dataVal = reflect.Indirect(dataVal) - } - - if !dataVal.IsValid() { - dataVal = reflect.Zero(val.Type()) - } - - dataValType := dataVal.Type() - if !dataValType.AssignableTo(val.Type()) { - return fmt.Errorf( - "'%s' expected type '%s', got '%s'", - name, val.Type(), dataValType) - } - - val.Set(dataVal) - return nil -} - -func (d *Decoder) decodeString(name string, data interface{}, val reflect.Value) error { - dataVal := reflect.Indirect(reflect.ValueOf(data)) - dataKind := getKind(dataVal) - - converted := true - switch { - case dataKind == reflect.String: - val.SetString(dataVal.String()) - case dataKind == reflect.Bool && d.config.WeaklyTypedInput: - if dataVal.Bool() { - val.SetString("1") - } else { - val.SetString("0") - } - case dataKind == reflect.Int && d.config.WeaklyTypedInput: - val.SetString(strconv.FormatInt(dataVal.Int(), 10)) - case dataKind == reflect.Uint && d.config.WeaklyTypedInput: - val.SetString(strconv.FormatUint(dataVal.Uint(), 10)) - case dataKind == reflect.Float32 && d.config.WeaklyTypedInput: - val.SetString(strconv.FormatFloat(dataVal.Float(), 'f', -1, 64)) - case dataKind == reflect.Slice && d.config.WeaklyTypedInput, - dataKind == reflect.Array && d.config.WeaklyTypedInput: - dataType := dataVal.Type() - elemKind := dataType.Elem().Kind() - switch elemKind { - case reflect.Uint8: - var uints []uint8 - if dataKind == reflect.Array { - uints = make([]uint8, dataVal.Len(), dataVal.Len()) - for i := range uints { - uints[i] = dataVal.Index(i).Interface().(uint8) - } - } else { - uints = dataVal.Interface().([]uint8) - } - val.SetString(string(uints)) - default: - converted = false - } - default: - converted = false - } - - if !converted { - return fmt.Errorf( - "'%s' expected type '%s', got unconvertible type '%s'", - name, val.Type(), dataVal.Type()) - } - - return nil -} - -func (d *Decoder) decodeInt(name string, data interface{}, val reflect.Value) error { - dataVal := reflect.Indirect(reflect.ValueOf(data)) - dataKind := getKind(dataVal) - dataType := dataVal.Type() - - switch { - case dataKind == reflect.Int: - val.SetInt(dataVal.Int()) - case dataKind == reflect.Uint: - val.SetInt(int64(dataVal.Uint())) - case dataKind == reflect.Float32: - val.SetInt(int64(dataVal.Float())) - case dataKind == reflect.Bool && d.config.WeaklyTypedInput: - if dataVal.Bool() { - val.SetInt(1) - } else { - val.SetInt(0) - } - case dataKind == reflect.String && d.config.WeaklyTypedInput: - i, err := strconv.ParseInt(dataVal.String(), 0, val.Type().Bits()) - if err == nil { - val.SetInt(i) - } else { - return fmt.Errorf("cannot parse '%s' as int: %s", name, err) - } - case dataType.PkgPath() == "encoding/json" && dataType.Name() == "Number": - jn := data.(json.Number) - i, err := jn.Int64() - if err != nil { - return fmt.Errorf( - "error decoding json.Number into %s: %s", name, err) - } - val.SetInt(i) - default: - return fmt.Errorf( - "'%s' expected type '%s', got unconvertible type '%s'", - name, val.Type(), dataVal.Type()) - } - - return nil -} - -func (d *Decoder) decodeUint(name string, data interface{}, val reflect.Value) error { - dataVal := reflect.Indirect(reflect.ValueOf(data)) - dataKind := getKind(dataVal) - - switch { - case dataKind == reflect.Int: - i := dataVal.Int() - if i < 0 && !d.config.WeaklyTypedInput { - return fmt.Errorf("cannot parse '%s', %d overflows uint", - name, i) - } - val.SetUint(uint64(i)) - case dataKind == reflect.Uint: - val.SetUint(dataVal.Uint()) - case dataKind == reflect.Float32: - f := dataVal.Float() - if f < 0 && !d.config.WeaklyTypedInput { - return fmt.Errorf("cannot parse '%s', %f overflows uint", - name, f) - } - val.SetUint(uint64(f)) - case dataKind == reflect.Bool && d.config.WeaklyTypedInput: - if dataVal.Bool() { - val.SetUint(1) - } else { - val.SetUint(0) - } - case dataKind == reflect.String && d.config.WeaklyTypedInput: - i, err := strconv.ParseUint(dataVal.String(), 0, val.Type().Bits()) - if err == nil { - val.SetUint(i) - } else { - return fmt.Errorf("cannot parse '%s' as uint: %s", name, err) - } - default: - return fmt.Errorf( - "'%s' expected type '%s', got unconvertible type '%s'", - name, val.Type(), dataVal.Type()) - } - - return nil -} - -func (d *Decoder) decodeBool(name string, data interface{}, val reflect.Value) error { - dataVal := reflect.Indirect(reflect.ValueOf(data)) - dataKind := getKind(dataVal) - - switch { - case dataKind == reflect.Bool: - val.SetBool(dataVal.Bool()) - case dataKind == reflect.Int && d.config.WeaklyTypedInput: - val.SetBool(dataVal.Int() != 0) - case dataKind == reflect.Uint && d.config.WeaklyTypedInput: - val.SetBool(dataVal.Uint() != 0) - case dataKind == reflect.Float32 && d.config.WeaklyTypedInput: - val.SetBool(dataVal.Float() != 0) - case dataKind == reflect.String && d.config.WeaklyTypedInput: - b, err := strconv.ParseBool(dataVal.String()) - if err == nil { - val.SetBool(b) - } else if dataVal.String() == "" { - val.SetBool(false) - } else { - return fmt.Errorf("cannot parse '%s' as bool: %s", name, err) - } - default: - return fmt.Errorf( - "'%s' expected type '%s', got unconvertible type '%s'", - name, val.Type(), dataVal.Type()) - } - - return nil -} - -func (d *Decoder) decodeFloat(name string, data interface{}, val reflect.Value) error { - dataVal := reflect.Indirect(reflect.ValueOf(data)) - dataKind := getKind(dataVal) - dataType := dataVal.Type() - - switch { - case dataKind == reflect.Int: - val.SetFloat(float64(dataVal.Int())) - case dataKind == reflect.Uint: - val.SetFloat(float64(dataVal.Uint())) - case dataKind == reflect.Float32: - val.SetFloat(dataVal.Float()) - case dataKind == reflect.Bool && d.config.WeaklyTypedInput: - if dataVal.Bool() { - val.SetFloat(1) - } else { - val.SetFloat(0) - } - case dataKind == reflect.String && d.config.WeaklyTypedInput: - f, err := strconv.ParseFloat(dataVal.String(), val.Type().Bits()) - if err == nil { - val.SetFloat(f) - } else { - return fmt.Errorf("cannot parse '%s' as float: %s", name, err) - } - case dataType.PkgPath() == "encoding/json" && dataType.Name() == "Number": - jn := data.(json.Number) - i, err := jn.Float64() - if err != nil { - return fmt.Errorf( - "error decoding json.Number into %s: %s", name, err) - } - val.SetFloat(i) - default: - return fmt.Errorf( - "'%s' expected type '%s', got unconvertible type '%s'", - name, val.Type(), dataVal.Type()) - } - - return nil -} - -func (d *Decoder) decodeMap(name string, data interface{}, val reflect.Value) error { - valType := val.Type() - valKeyType := valType.Key() - valElemType := valType.Elem() - - // By default we overwrite keys in the current map - valMap := val - - // If the map is nil or we're purposely zeroing fields, make a new map - if valMap.IsNil() || d.config.ZeroFields { - // Make a new map to hold our result - mapType := reflect.MapOf(valKeyType, valElemType) - valMap = reflect.MakeMap(mapType) - } - - // Check input type and based on the input type jump to the proper func - dataVal := reflect.Indirect(reflect.ValueOf(data)) - switch dataVal.Kind() { - case reflect.Map: - return d.decodeMapFromMap(name, dataVal, val, valMap) - - case reflect.Struct: - return d.decodeMapFromStruct(name, dataVal, val, valMap) - - case reflect.Array, reflect.Slice: - if d.config.WeaklyTypedInput { - return d.decodeMapFromSlice(name, dataVal, val, valMap) - } - - fallthrough - - default: - return fmt.Errorf("'%s' expected a map, got '%s'", name, dataVal.Kind()) - } -} - -func (d *Decoder) decodeMapFromSlice(name string, dataVal reflect.Value, val reflect.Value, valMap reflect.Value) error { - // Special case for BC reasons (covered by tests) - if dataVal.Len() == 0 { - val.Set(valMap) - return nil - } - - for i := 0; i < dataVal.Len(); i++ { - err := d.decode( - fmt.Sprintf("%s[%d]", name, i), - dataVal.Index(i).Interface(), val) - if err != nil { - return err - } - } - - return nil -} - -func (d *Decoder) decodeMapFromMap(name string, dataVal reflect.Value, val reflect.Value, valMap reflect.Value) error { - valType := val.Type() - valKeyType := valType.Key() - valElemType := valType.Elem() - - // Accumulate errors - errors := make([]string, 0) - - // If the input data is empty, then we just match what the input data is. - if dataVal.Len() == 0 { - if dataVal.IsNil() { - if !val.IsNil() { - val.Set(dataVal) - } - } else { - // Set to empty allocated value - val.Set(valMap) - } - - return nil - } - - for _, k := range dataVal.MapKeys() { - fieldName := fmt.Sprintf("%s[%s]", name, k) - - // First decode the key into the proper type - currentKey := reflect.Indirect(reflect.New(valKeyType)) - if err := d.decode(fieldName, k.Interface(), currentKey); err != nil { - errors = appendErrors(errors, err) - continue - } - - // Next decode the data into the proper type - v := dataVal.MapIndex(k).Interface() - currentVal := reflect.Indirect(reflect.New(valElemType)) - if err := d.decode(fieldName, v, currentVal); err != nil { - errors = appendErrors(errors, err) - continue - } - - valMap.SetMapIndex(currentKey, currentVal) - } - - // Set the built up map to the value - val.Set(valMap) - - // If we had errors, return those - if len(errors) > 0 { - return &Error{errors} - } - - return nil -} - -func (d *Decoder) decodeMapFromStruct(name string, dataVal reflect.Value, val reflect.Value, valMap reflect.Value) error { - typ := dataVal.Type() - for i := 0; i < typ.NumField(); i++ { - // Get the StructField first since this is a cheap operation. If the - // field is unexported, then ignore it. - f := typ.Field(i) - if f.PkgPath != "" { - continue - } - - // Next get the actual value of this field and verify it is assignable - // to the map value. - v := dataVal.Field(i) - if !v.Type().AssignableTo(valMap.Type().Elem()) { - return fmt.Errorf("cannot assign type '%s' to map value field of type '%s'", v.Type(), valMap.Type().Elem()) - } - - tagValue := f.Tag.Get(d.config.TagName) - tagParts := strings.Split(tagValue, ",") - - // Determine the name of the key in the map - keyName := f.Name - if tagParts[0] != "" { - if tagParts[0] == "-" { - continue - } - keyName = tagParts[0] - } - - // If "squash" is specified in the tag, we squash the field down. - squash := false - for _, tag := range tagParts[1:] { - if tag == "squash" { - squash = true - break - } - } - if squash && v.Kind() != reflect.Struct { - return fmt.Errorf("cannot squash non-struct type '%s'", v.Type()) - } - - switch v.Kind() { - // this is an embedded struct, so handle it differently - case reflect.Struct: - x := reflect.New(v.Type()) - x.Elem().Set(v) - - vType := valMap.Type() - vKeyType := vType.Key() - vElemType := vType.Elem() - mType := reflect.MapOf(vKeyType, vElemType) - vMap := reflect.MakeMap(mType) - - err := d.decode(keyName, x.Interface(), vMap) - if err != nil { - return err - } - - if squash { - for _, k := range vMap.MapKeys() { - valMap.SetMapIndex(k, vMap.MapIndex(k)) - } - } else { - valMap.SetMapIndex(reflect.ValueOf(keyName), vMap) - } - - default: - valMap.SetMapIndex(reflect.ValueOf(keyName), v) - } - } - - if val.CanAddr() { - val.Set(valMap) - } - - return nil -} - -func (d *Decoder) decodePtr(name string, data interface{}, val reflect.Value) error { - // If the input data is nil, then we want to just set the output - // pointer to be nil as well. - isNil := data == nil - if !isNil { - switch v := reflect.Indirect(reflect.ValueOf(data)); v.Kind() { - case reflect.Chan, - reflect.Func, - reflect.Interface, - reflect.Map, - reflect.Ptr, - reflect.Slice: - isNil = v.IsNil() - } - } - if isNil { - if !val.IsNil() && val.CanSet() { - nilValue := reflect.New(val.Type()).Elem() - val.Set(nilValue) - } - - return nil - } - - // Create an element of the concrete (non pointer) type and decode - // into that. Then set the value of the pointer to this type. - valType := val.Type() - valElemType := valType.Elem() - if val.CanSet() { - realVal := val - if realVal.IsNil() || d.config.ZeroFields { - realVal = reflect.New(valElemType) - } - - if err := d.decode(name, data, reflect.Indirect(realVal)); err != nil { - return err - } - - val.Set(realVal) - } else { - if err := d.decode(name, data, reflect.Indirect(val)); err != nil { - return err - } - } - return nil -} - -func (d *Decoder) decodeFunc(name string, data interface{}, val reflect.Value) error { - // Create an element of the concrete (non pointer) type and decode - // into that. Then set the value of the pointer to this type. - dataVal := reflect.Indirect(reflect.ValueOf(data)) - if val.Type() != dataVal.Type() { - return fmt.Errorf( - "'%s' expected type '%s', got unconvertible type '%s'", - name, val.Type(), dataVal.Type()) - } - val.Set(dataVal) - return nil -} - -func (d *Decoder) decodeSlice(name string, data interface{}, val reflect.Value) error { - dataVal := reflect.Indirect(reflect.ValueOf(data)) - dataValKind := dataVal.Kind() - valType := val.Type() - valElemType := valType.Elem() - sliceType := reflect.SliceOf(valElemType) - - valSlice := val - if valSlice.IsNil() || d.config.ZeroFields { - if d.config.WeaklyTypedInput { - switch { - // Slice and array we use the normal logic - case dataValKind == reflect.Slice, dataValKind == reflect.Array: - break - - // Empty maps turn into empty slices - case dataValKind == reflect.Map: - if dataVal.Len() == 0 { - val.Set(reflect.MakeSlice(sliceType, 0, 0)) - return nil - } - // Create slice of maps of other sizes - return d.decodeSlice(name, []interface{}{data}, val) - - case dataValKind == reflect.String && valElemType.Kind() == reflect.Uint8: - return d.decodeSlice(name, []byte(dataVal.String()), val) - - // All other types we try to convert to the slice type - // and "lift" it into it. i.e. a string becomes a string slice. - default: - // Just re-try this function with data as a slice. - return d.decodeSlice(name, []interface{}{data}, val) - } - } - - // Check input type - if dataValKind != reflect.Array && dataValKind != reflect.Slice { - return fmt.Errorf( - "'%s': source data must be an array or slice, got %s", name, dataValKind) - - } - - // If the input value is empty, then don't allocate since non-nil != nil - if dataVal.Len() == 0 { - return nil - } - - // Make a new slice to hold our result, same size as the original data. - valSlice = reflect.MakeSlice(sliceType, dataVal.Len(), dataVal.Len()) - } - - // Accumulate any errors - errors := make([]string, 0) - - for i := 0; i < dataVal.Len(); i++ { - currentData := dataVal.Index(i).Interface() - for valSlice.Len() <= i { - valSlice = reflect.Append(valSlice, reflect.Zero(valElemType)) - } - currentField := valSlice.Index(i) - - fieldName := fmt.Sprintf("%s[%d]", name, i) - if err := d.decode(fieldName, currentData, currentField); err != nil { - errors = appendErrors(errors, err) - } - } - - // Finally, set the value to the slice we built up - val.Set(valSlice) - - // If there were errors, we return those - if len(errors) > 0 { - return &Error{errors} - } - - return nil -} - -func (d *Decoder) decodeArray(name string, data interface{}, val reflect.Value) error { - dataVal := reflect.Indirect(reflect.ValueOf(data)) - dataValKind := dataVal.Kind() - valType := val.Type() - valElemType := valType.Elem() - arrayType := reflect.ArrayOf(valType.Len(), valElemType) - - valArray := val - - if valArray.Interface() == reflect.Zero(valArray.Type()).Interface() || d.config.ZeroFields { - // Check input type - if dataValKind != reflect.Array && dataValKind != reflect.Slice { - if d.config.WeaklyTypedInput { - switch { - // Empty maps turn into empty arrays - case dataValKind == reflect.Map: - if dataVal.Len() == 0 { - val.Set(reflect.Zero(arrayType)) - return nil - } - - // All other types we try to convert to the array type - // and "lift" it into it. i.e. a string becomes a string array. - default: - // Just re-try this function with data as a slice. - return d.decodeArray(name, []interface{}{data}, val) - } - } - - return fmt.Errorf( - "'%s': source data must be an array or slice, got %s", name, dataValKind) - - } - if dataVal.Len() > arrayType.Len() { - return fmt.Errorf( - "'%s': expected source data to have length less or equal to %d, got %d", name, arrayType.Len(), dataVal.Len()) - - } - - // Make a new array to hold our result, same size as the original data. - valArray = reflect.New(arrayType).Elem() - } - - // Accumulate any errors - errors := make([]string, 0) - - for i := 0; i < dataVal.Len(); i++ { - currentData := dataVal.Index(i).Interface() - currentField := valArray.Index(i) - - fieldName := fmt.Sprintf("%s[%d]", name, i) - if err := d.decode(fieldName, currentData, currentField); err != nil { - errors = appendErrors(errors, err) - } - } - - // Finally, set the value to the array we built up - val.Set(valArray) - - // If there were errors, we return those - if len(errors) > 0 { - return &Error{errors} - } - - return nil -} - -func (d *Decoder) decodeStruct(name string, data interface{}, val reflect.Value) error { - dataVal := reflect.Indirect(reflect.ValueOf(data)) - - // If the type of the value to write to and the data match directly, - // then we just set it directly instead of recursing into the structure. - if dataVal.Type() == val.Type() { - val.Set(dataVal) - return nil - } - - dataValKind := dataVal.Kind() - switch dataValKind { - case reflect.Map: - return d.decodeStructFromMap(name, dataVal, val) - - case reflect.Struct: - // Not the most efficient way to do this but we can optimize later if - // we want to. To convert from struct to struct we go to map first - // as an intermediary. - m := make(map[string]interface{}) - mval := reflect.Indirect(reflect.ValueOf(&m)) - if err := d.decodeMapFromStruct(name, dataVal, mval, mval); err != nil { - return err - } - - result := d.decodeStructFromMap(name, mval, val) - return result - - default: - return fmt.Errorf("'%s' expected a map, got '%s'", name, dataVal.Kind()) - } -} - -func (d *Decoder) decodeStructFromMap(name string, dataVal, val reflect.Value) error { - dataValType := dataVal.Type() - if kind := dataValType.Key().Kind(); kind != reflect.String && kind != reflect.Interface { - return fmt.Errorf( - "'%s' needs a map with string keys, has '%s' keys", - name, dataValType.Key().Kind()) - } - - dataValKeys := make(map[reflect.Value]struct{}) - dataValKeysUnused := make(map[interface{}]struct{}) - for _, dataValKey := range dataVal.MapKeys() { - dataValKeys[dataValKey] = struct{}{} - dataValKeysUnused[dataValKey.Interface()] = struct{}{} - } - - errors := make([]string, 0) - - // This slice will keep track of all the structs we'll be decoding. - // There can be more than one struct if there are embedded structs - // that are squashed. - structs := make([]reflect.Value, 1, 5) - structs[0] = val - - // Compile the list of all the fields that we're going to be decoding - // from all the structs. - type field struct { - field reflect.StructField - val reflect.Value - } - fields := []field{} - for len(structs) > 0 { - structVal := structs[0] - structs = structs[1:] - - structType := structVal.Type() - - for i := 0; i < structType.NumField(); i++ { - fieldType := structType.Field(i) - fieldKind := fieldType.Type.Kind() - - // If "squash" is specified in the tag, we squash the field down. - squash := false - tagParts := strings.Split(fieldType.Tag.Get(d.config.TagName), ",") - for _, tag := range tagParts[1:] { - if tag == "squash" { - squash = true - break - } - } - - if squash { - if fieldKind != reflect.Struct { - errors = appendErrors(errors, - fmt.Errorf("%s: unsupported type for squash: %s", fieldType.Name, fieldKind)) - } else { - structs = append(structs, structVal.FieldByName(fieldType.Name)) - } - continue - } - - // Normal struct field, store it away - fields = append(fields, field{fieldType, structVal.Field(i)}) - } - } - - // for fieldType, field := range fields { - for _, f := range fields { - field, fieldValue := f.field, f.val - fieldName := field.Name - - tagValue := field.Tag.Get(d.config.TagName) - tagValue = strings.SplitN(tagValue, ",", 2)[0] - if tagValue != "" { - fieldName = tagValue - } - - rawMapKey := reflect.ValueOf(fieldName) - rawMapVal := dataVal.MapIndex(rawMapKey) - if !rawMapVal.IsValid() { - // Do a slower search by iterating over each key and - // doing case-insensitive search. - for dataValKey := range dataValKeys { - mK, ok := dataValKey.Interface().(string) - if !ok { - // Not a string key - continue - } - - if strings.EqualFold(mK, fieldName) { - rawMapKey = dataValKey - rawMapVal = dataVal.MapIndex(dataValKey) - break - } - } - - if !rawMapVal.IsValid() { - // There was no matching key in the map for the value in - // the struct. Just ignore. - continue - } - } - - // Delete the key we're using from the unused map so we stop tracking - delete(dataValKeysUnused, rawMapKey.Interface()) - - if !fieldValue.IsValid() { - // This should never happen - panic("field is not valid") - } - - // If we can't set the field, then it is unexported or something, - // and we just continue onwards. - if !fieldValue.CanSet() { - continue - } - - // If the name is empty string, then we're at the root, and we - // don't dot-join the fields. - if name != "" { - fieldName = fmt.Sprintf("%s.%s", name, fieldName) - } - - if err := d.decode(fieldName, rawMapVal.Interface(), fieldValue); err != nil { - errors = appendErrors(errors, err) - } - } - - if d.config.ErrorUnused && len(dataValKeysUnused) > 0 { - keys := make([]string, 0, len(dataValKeysUnused)) - for rawKey := range dataValKeysUnused { - keys = append(keys, rawKey.(string)) - } - sort.Strings(keys) - - err := fmt.Errorf("'%s' has invalid keys: %s", name, strings.Join(keys, ", ")) - errors = appendErrors(errors, err) - } - - if len(errors) > 0 { - return &Error{errors} - } - - // Add the unused keys to the list of unused keys if we're tracking metadata - if d.config.Metadata != nil { - for rawKey := range dataValKeysUnused { - key := rawKey.(string) - if name != "" { - key = fmt.Sprintf("%s.%s", name, key) - } - - d.config.Metadata.Unused = append(d.config.Metadata.Unused, key) - } - } - - return nil -} - -func getKind(val reflect.Value) reflect.Kind { - kind := val.Kind() - - switch { - case kind >= reflect.Int && kind <= reflect.Int64: - return reflect.Int - case kind >= reflect.Uint && kind <= reflect.Uint64: - return reflect.Uint - case kind >= reflect.Float32 && kind <= reflect.Float64: - return reflect.Float32 - default: - return kind - } -}