diff options
Diffstat (limited to 'vendor/google.golang.org/api/gensupport/json.go')
| -rw-r--r-- | vendor/google.golang.org/api/gensupport/json.go | 172 | 
1 files changed, 0 insertions, 172 deletions
| diff --git a/vendor/google.golang.org/api/gensupport/json.go b/vendor/google.golang.org/api/gensupport/json.go deleted file mode 100644 index dd7bcd2..0000000 --- a/vendor/google.golang.org/api/gensupport/json.go +++ /dev/null @@ -1,172 +0,0 @@ -// Copyright 2015 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package gensupport - -import ( -	"encoding/json" -	"fmt" -	"reflect" -	"strings" -) - -// MarshalJSON returns a JSON encoding of schema containing only selected fields. -// A field is selected if: -//   * it has a non-empty value, or -//     * its field name is present in forceSendFields, and -//     * it is not a nil pointer or nil interface. -// The JSON key for each selected field is taken from the field's json: struct tag. -func MarshalJSON(schema interface{}, forceSendFields []string) ([]byte, error) { -	if len(forceSendFields) == 0 { -		return json.Marshal(schema) -	} - -	mustInclude := make(map[string]struct{}) -	for _, f := range forceSendFields { -		mustInclude[f] = struct{}{} -	} - -	dataMap, err := schemaToMap(schema, mustInclude) -	if err != nil { -		return nil, err -	} -	return json.Marshal(dataMap) -} - -func schemaToMap(schema interface{}, mustInclude map[string]struct{}) (map[string]interface{}, error) { -	m := make(map[string]interface{}) -	s := reflect.ValueOf(schema) -	st := s.Type() - -	for i := 0; i < s.NumField(); i++ { -		jsonTag := st.Field(i).Tag.Get("json") -		if jsonTag == "" { -			continue -		} -		tag, err := parseJSONTag(jsonTag) -		if err != nil { -			return nil, err -		} -		if tag.ignore { -			continue -		} - -		v := s.Field(i) -		f := st.Field(i) -		if !includeField(v, f, mustInclude) { -			continue -		} - -		// nil maps are treated as empty maps. -		if f.Type.Kind() == reflect.Map && v.IsNil() { -			m[tag.apiName] = map[string]string{} -			continue -		} - -		// nil slices are treated as empty slices. -		if f.Type.Kind() == reflect.Slice && v.IsNil() { -			m[tag.apiName] = []bool{} -			continue -		} - -		if tag.stringFormat { -			m[tag.apiName] = formatAsString(v, f.Type.Kind()) -		} else { -			m[tag.apiName] = v.Interface() -		} -	} -	return m, nil -} - -// formatAsString returns a string representation of v, dereferencing it first if possible. -func formatAsString(v reflect.Value, kind reflect.Kind) string { -	if kind == reflect.Ptr && !v.IsNil() { -		v = v.Elem() -	} - -	return fmt.Sprintf("%v", v.Interface()) -} - -// jsonTag represents a restricted version of the struct tag format used by encoding/json. -// It is used to describe the JSON encoding of fields in a Schema struct. -type jsonTag struct { -	apiName      string -	stringFormat bool -	ignore       bool -} - -// parseJSONTag parses a restricted version of the struct tag format used by encoding/json. -// The format of the tag must match that generated by the Schema.writeSchemaStruct method -// in the api generator. -func parseJSONTag(val string) (jsonTag, error) { -	if val == "-" { -		return jsonTag{ignore: true}, nil -	} - -	var tag jsonTag - -	i := strings.Index(val, ",") -	if i == -1 || val[:i] == "" { -		return tag, fmt.Errorf("malformed json tag: %s", val) -	} - -	tag = jsonTag{ -		apiName: val[:i], -	} - -	switch val[i+1:] { -	case "omitempty": -	case "omitempty,string": -		tag.stringFormat = true -	default: -		return tag, fmt.Errorf("malformed json tag: %s", val) -	} - -	return tag, nil -} - -// Reports whether the struct field "f" with value "v" should be included in JSON output. -func includeField(v reflect.Value, f reflect.StructField, mustInclude map[string]struct{}) bool { -	// The regular JSON encoding of a nil pointer is "null", which means "delete this field". -	// Therefore, we could enable field deletion by honoring pointer fields' presence in the mustInclude set. -	// However, many fields are not pointers, so there would be no way to delete these fields. -	// Rather than partially supporting field deletion, we ignore mustInclude for nil pointer fields. -	// Deletion will be handled by a separate mechanism. -	if f.Type.Kind() == reflect.Ptr && v.IsNil() { -		return false -	} - -	// The "any" type is represented as an interface{}.  If this interface -	// is nil, there is no reasonable representation to send.  We ignore -	// these fields, for the same reasons as given above for pointers. -	if f.Type.Kind() == reflect.Interface && v.IsNil() { -		return false -	} - -	_, ok := mustInclude[f.Name] -	return ok || !isEmptyValue(v) -} - -// isEmptyValue reports whether v is the empty value for its type.  This -// implementation is based on that of the encoding/json package, but its -// correctness does not depend on it being identical. What's important is that -// this function return false in situations where v should not be sent as part -// of a PATCH operation. -func isEmptyValue(v reflect.Value) bool { -	switch v.Kind() { -	case reflect.Array, reflect.Map, reflect.Slice, reflect.String: -		return v.Len() == 0 -	case reflect.Bool: -		return !v.Bool() -	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64: -		return v.Int() == 0 -	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr: -		return v.Uint() == 0 -	case reflect.Float32, reflect.Float64: -		return v.Float() == 0 -	case reflect.Interface, reflect.Ptr: -		return v.IsNil() -	} -	return false -} | 
