More accurate name for structure that contains easy access to prototy…

…pes.

This is technically a breaking change, as it's an exported name,
but I don't think there are references to this value outside this repo
to date.

schema/dmt/operations.go

@@ -16,11 +16,11 @@ func ConcatenateSchemas(a, b *Schema) *Schema {
 	// The joy of having an intermediate form that's just regular data model:
 	// we can implement this by simply using data model "copy" operations,
 	// and the result is correct.
-	nb := Type.Schema.NewBuilder()
-	if err := datamodel.Copy(bindnode.Wrap(a, Type.Schema.Type()), nb); err != nil {
+	nb := Prototypes.Schema.NewBuilder()
+	if err := datamodel.Copy(bindnode.Wrap(a, Prototypes.Schema.Type()), nb); err != nil {
 		panic(err)
 	}
-	if err := datamodel.Copy(bindnode.Wrap(b, Type.Schema.Type()), nb); err != nil {
+	if err := datamodel.Copy(bindnode.Wrap(b, Prototypes.Schema.Type()), nb); err != nil {
 		panic(err)
 	}
 	return bindnode.Unwrap(nb.Build()).(*Schema)

schema/dmt/roundtrip_test.go

@@ -33,7 +33,7 @@ func testRoundtrip(t *testing.T, want string, updateFn func(string)) {
 
 	crre := regexp.MustCompile(`\r?\n`)
 	want = crre.ReplaceAllString(want, "\n")
-	nb := schemadmt.Type.Schema.Representation().NewBuilder()
+	nb := schemadmt.Prototypes.Schema.Representation().NewBuilder()
 	err := ipldjson.Decode(nb, strings.NewReader(want))
 	qt.Assert(t, err, qt.IsNil)
 	node := nb.Build().(schema.TypedNode)

schema/dmt/schema.go

@@ -10,7 +10,7 @@ import (
 
 // This schema follows https://ipld.io/specs/schemas/schema-schema.ipldsch.
 
-var Type struct {
+var Prototypes struct {
 	Schema schema.TypedPrototype
 }
 
@@ -435,7 +435,7 @@ func init() {
 
 	TypeSystem = ts
 
-	Type.Schema = bindnode.Prototype(
+	Prototypes.Schema = bindnode.Prototype(
 		(*Schema)(nil),
 		TypeSystem.TypeByName("Schema"),
 	)