vendor: update github.com/dropbox/dropbox-sdk-go-unofficial

vendor/github.com/dropbox/dropbox-sdk-go-unofficial/generator/generate-sdk.sh

@@ -1,7 +1,7 @@
 #! /usr/bin/env bash
 set -euo pipefail
 
-if [[ $# -ne 0 ]]; then
+if [[ $# -gt 1 ]]; then
     echo "$0: Not expecting any command-line arguments, got $#." 1>&2
     exit 1
 fi
@@ -15,7 +15,7 @@ stone -v -a :all go_types.stoneg.py "$gen_dir" "$spec_dir"/*.stone
 stone -v -a :all go_client.stoneg.py "$gen_dir" "$spec_dir"/*.stone
 
 # Update SDK and API spec versions
-sdk_version="1.0.0-beta"
+sdk_version=${1:-"1.0.0-beta"}
 pushd ${spec_dir}
 spec_version=$(git rev-parse --short HEAD)
 popd

vendor/github.com/dropbox/dropbox-sdk-go-unofficial/generator/go_client.stoneg.py

@@ -1,7 +1,7 @@
 import os
 
-from stone.generator import CodeGenerator
-from stone.data_type import (
+from stone.backend import CodeBackend
+from stone.ir import (
     is_void_type,
     is_struct_type
 )
@@ -14,7 +14,7 @@ from go_helpers import (
 )
 
 
-class GoClientGenerator(CodeGenerator):
+class GoClientBackend(CodeBackend):
     def generate(self, api):
         for namespace in api.namespaces.values():
             if len(namespace.routes) > 0:
@@ -120,7 +120,7 @@ class GoClientGenerator(CodeGenerator):
 
         headers = {}
         if not is_void_type(route.arg_data_type):
-            if host == 'content':
+            if host == 'content' or style in ['upload', 'download']:
                 headers["Dropbox-API-Arg"] = "string(b)"
             else:
                 headers["Content-Type"] = '"application/json"'

vendor/github.com/dropbox/dropbox-sdk-go-unofficial/generator/go_helpers.py

@@ -1,5 +1,5 @@
-from stone.api import (ApiNamespace, ApiRoute)
-from stone.data_type import (
+from stone.ir import (ApiNamespace, ApiRoute)
+from stone.ir import (
     Boolean,
     Float32,
     Float64,
@@ -15,7 +15,7 @@ from stone.data_type import (
     is_struct_type,
     Void,
 )
-from stone.target import helpers
+from stone.backends import helpers
 
 HEADER = """\
 // Copyright (c) Dropbox, Inc.

vendor/github.com/dropbox/dropbox-sdk-go-unofficial/generator/go_rsrc/files/metadata.go

@@ -23,9 +23,9 @@ package files
 import "encoding/json"
 
 type listFolderResult struct {
-	Entries []metadataUnion `json:"entries"`
-	Cursor  string          `json:"cursor"`
-	HasMore bool            `json:"has_more"`
+	Entries []json.RawMessage `json:"entries"`
+	Cursor  string            `json:"cursor"`
+	HasMore bool              `json:"has_more"`
 }
 
 // UnmarshalJSON deserializes into a ListFolderResult instance
@@ -38,21 +38,18 @@ func (r *ListFolderResult) UnmarshalJSON(b []byte) error {
 	r.HasMore = l.HasMore
 	r.Entries = make([]IsMetadata, len(l.Entries))
 	for i, e := range l.Entries {
-		switch e.Tag {
-		case "file":
-			r.Entries[i] = e.File
-		case "folder":
-			r.Entries[i] = e.Folder
-		case "deleted":
-			r.Entries[i] = e.Deleted
+		metadata, err := IsMetadataFromJSON(e)
+		if err != nil {
+			return err
 		}
+		r.Entries[i] = metadata
 	}
 	return nil
 }
 
 type searchMatch struct {
 	MatchType *SearchMatchType `json:"match_type"`
-	Metadata  metadataUnion    `json:"metadata"`
+	Metadata  json.RawMessage  `json:"metadata"`
 }
 
 // UnmarshalJSON deserializes into a SearchMatch instance
@@ -62,38 +59,51 @@ func (s *SearchMatch) UnmarshalJSON(b []byte) error {
 		return err
 	}
 	s.MatchType = m.MatchType
-	e := m.Metadata
-	switch e.Tag {
-	case "file":
-		s.Metadata = e.File
-	case "folder":
-		s.Metadata = e.Folder
-	case "deleted":
-		s.Metadata = e.Deleted
+	metadata, err := IsMetadataFromJSON(m.Metadata)
+	if err != nil {
+		return err
 	}
+	s.Metadata = metadata
 	return nil
 }
 
 type deleteResult struct {
 	FileOpsResult
-	Metadata metadataUnion `json:"metadata"`
+	Metadata json.RawMessage `json:"metadata"`
 }
 
-// UnmarshalJSON deserializes into a SearchMatch instance
+// UnmarshalJSON deserializes into a DeleteResult instance
 func (s *DeleteResult) UnmarshalJSON(b []byte) error {
 	var m deleteResult
 	if err := json.Unmarshal(b, &m); err != nil {
 		return err
 	}
 	s.FileOpsResult = m.FileOpsResult
-	e := m.Metadata
-	switch e.Tag {
-	case "file":
-		s.Metadata = e.File
-	case "folder":
-		s.Metadata = e.Folder
-	case "deleted":
-		s.Metadata = e.Deleted
+	metadata, err := IsMetadataFromJSON(m.Metadata)
+	if err != nil {
+		return err
 	}
+	s.Metadata = metadata
+	return nil
+}
+
+type relocationResult struct {
+	FileOpsResult
+	// Metadata : Metadata of the relocated object.
+	Metadata json.RawMessage `json:"metadata"`
+}
+
+// UnmarshalJSON deserializes into a RelocationResult instance
+func (s *RelocationResult) UnmarshalJSON(b []byte) error {
+	var m relocationResult
+	if err := json.Unmarshal(b, &m); err != nil {
+		return err
+	}
+	s.FileOpsResult = m.FileOpsResult
+	metadata, err := IsMetadataFromJSON(m.Metadata)
+	if err != nil {
+		return err
+	}
+	s.Metadata = metadata
 	return nil
 }

vendor/github.com/dropbox/dropbox-sdk-go-unofficial/generator/go_types.stoneg.py

@@ -1,8 +1,8 @@
 import os
 import shutil
 
-from stone.generator import CodeGenerator
-from stone.data_type import (
+from stone.backend import CodeBackend
+from stone.ir import (
     is_boolean_type,
     is_nullable_type,
     is_primitive_type,
@@ -19,7 +19,7 @@ from go_helpers import (
 )
 
 
-class GoTypesGenerator(CodeGenerator):
+class GoTypesBackend(CodeBackend):
     def generate(self, api):
         rsrc_folder = os.path.join(os.path.dirname(__file__), 'go_rsrc')
         shutil.copy(os.path.join(rsrc_folder, 'sdk.go'),