gx update and fix code to use new Cid type

package.json

@@ -9,21 +9,21 @@
   "gxDependencies": [
     {
       "author": "why",
-      "hash": "QmNr4E8z9bGTztvHJktp7uQaMdx9p3r9Asrq6eYk7iCh4a",
+      "hash": "QmURqt1jB9Yu3X4Tr9WQJf36QGN7vi8mGTzjnX2ij1CJwC",
       "name": "go-merkledag",
-      "version": "1.0.14"
+      "version": "1.1.0"
     },
     {
       "author": "whyrusleeping",
-      "hash": "QmX5CsuHyVZeTLxgRSYkgLSDQKb9UjE8xnhQzCEJWWWFsC",
+      "hash": "QmdDXJs4axxefSPgK6Y1QhpJWKuDPnGJiqgq4uncb4rFHL",
       "name": "go-ipld-format",
-      "version": "0.5.8"
+      "version": "0.6.0"
     },
     {
       "author": "whyrusleeping",
-      "hash": "QmZFbDTY9jfSBms2MchvYM9oYRbAF19K7Pby47yDBfpPrb",
+      "hash": "QmPSQnBKM9g7BaUcZCvswUJVscQ1ipjmwxN5PXCjkp9EQ7",
       "name": "go-cid",
-      "version": "0.8.0"
+      "version": "0.9.0"
     },
     {
       "hash": "QmRREK2CAZ5Re2Bd9zZFG6FeYDppUWt5cMgsoUEp3ktgSr",

path.go

@@ -36,7 +36,7 @@ func FromString(s string) Path {
 }
 
 // FromCid safely converts a cid.Cid type to a Path type.
-func FromCid(c *cid.Cid) Path {
+func FromCid(c cid.Cid) Path {
 	return Path("/ipfs/" + c.String())
 }
 
@@ -160,7 +160,7 @@ func SplitList(pth string) []string {
 
 // SplitAbsPath clean up and split fpath. It extracts the first component (which
 // must be a Multihash) and return it separately.
-func SplitAbsPath(fpath Path) (*cid.Cid, []string, error) {
+func SplitAbsPath(fpath Path) (cid.Cid, []string, error) {
 	parts := fpath.Segments()
 	if parts[0] == "ipfs" || parts[0] == "ipld" {
 		parts = parts[1:]
@@ -168,13 +168,13 @@ func SplitAbsPath(fpath Path) (*cid.Cid, []string, error) {
 
 	// if nothing, bail.
 	if len(parts) == 0 {
-		return nil, nil, ErrNoComponents
+		return cid.Cid{}, nil, ErrNoComponents
 	}
 
 	c, err := cid.Decode(parts[0])
 	// first element in the path is a cid
 	if err != nil {
-		return nil, nil, err
+		return cid.Cid{}, nil, err
 	}
 
 	return c, parts[1:], nil

resolver/resolver.go

@@ -25,7 +25,7 @@ var ErrNoComponents = errors.New(
 // ErrNoLink is returned when a link is not found in a path
 type ErrNoLink struct {
 	Name string
-	Node *cid.Cid
+	Node cid.Cid
 }
 
 // Error implements the Error interface for ErrNoLink with a useful
@@ -57,10 +57,10 @@ func NewBasicResolver(ds ipld.DAGService) *Resolver {
 
 // ResolveToLastNode walks the given path and returns the cid of the last node
 // referenced by the path
-func (r *Resolver) ResolveToLastNode(ctx context.Context, fpath path.Path) (*cid.Cid, []string, error) {
+func (r *Resolver) ResolveToLastNode(ctx context.Context, fpath path.Path) (cid.Cid, []string, error) {
 	c, p, err := path.SplitAbsPath(fpath)
 	if err != nil {
-		return nil, nil, err
+		return cid.Cid{}, nil, err
 	}
 
 	if len(p) == 0 {
@@ -69,7 +69,7 @@ func (r *Resolver) ResolveToLastNode(ctx context.Context, fpath path.Path) (*cid
 
 	nd, err := r.DAG.Get(ctx, c)
 	if err != nil {
-		return nil, nil, err
+		return cid.Cid{}, nil, err
 	}
 
 	for len(p) > 0 {
@@ -83,12 +83,12 @@ func (r *Resolver) ResolveToLastNode(ctx context.Context, fpath path.Path) (*cid
 		}
 
 		if err != nil {
-			return nil, nil, err
+			return cid.Cid{}, nil, err
 		}
 
 		next, err := lnk.GetNode(ctx, r.DAG)
 		if err != nil {
-			return nil, nil, err
+			return cid.Cid{}, nil, err
 		}
 		nd = next
 		p = rest
@@ -101,15 +101,15 @@ func (r *Resolver) ResolveToLastNode(ctx context.Context, fpath path.Path) (*cid
 	// Confirm the path exists within the object
 	val, rest, err := nd.Resolve(p)
 	if err != nil {
-		return nil, nil, err
+		return cid.Cid{}, nil, err
 	}
 
 	if len(rest) > 0 {
-		return nil, nil, errors.New("path failed to resolve fully")
+		return cid.Cid{}, nil, errors.New("path failed to resolve fully")
 	}
 	switch val.(type) {
 	case *ipld.Link:
-		return nil, nil, errors.New("inconsistent ResolveOnce / nd.Resolve")
+		return cid.Cid{}, nil, errors.New("inconsistent ResolveOnce / nd.Resolve")
 	default:
 		return nd.Cid(), p, nil
 	}