natives/reflect: Use 'embedded' rather than 'anonymous'.

These have been renamed in Go 1.11. Update our code to match upstream.

Fixes:

	$ gopherjs build reflect
	reflect/reflect.go:153:6: unknown field offsetAnon in struct literal
	reflect/reflect.go:995:12: invalid operation: field (variable of type *structField) has no field or method anon

Follows golang/go@47be3d4.

Author: dmitshur

compiler/natives/src/reflect/reflect.go

@@ -143,14 +143,14 @@ func reflectType(typ *js.Object) *rtype {
 			reflectFields := make([]structField, fields.Length())
 			for i := range reflectFields {
 				f := fields.Index(i)
-				offsetAnon := uintptr(i) << 1
-				if f.Get("anonymous").Bool() {
-					offsetAnon |= 1
+				offsetEmbed := uintptr(i) << 1
+				if f.Get("embedded").Bool() {
+					offsetEmbed |= 1
 				}
 				reflectFields[i] = structField{
-					name:       newName(internalStr(f.Get("name")), internalStr(f.Get("tag")), f.Get("exported").Bool()),
-					typ:        reflectType(f.Get("typ")),
-					offsetAnon: offsetAnon,
+					name:        newName(internalStr(f.Get("name")), internalStr(f.Get("tag")), f.Get("exported").Bool()),
+					typ:         reflectType(f.Get("typ")),
+					offsetEmbed: offsetEmbed,
 				}
 			}
 			setKindType(rt, &structType{
@@ -993,7 +993,7 @@ func (v Value) Field(i int) Value {
 
 	fl := v.flag&(flagStickyRO|flagIndir|flagAddr) | flag(typ.Kind())
 	if !field.name.isExported() {
-		if field.anon() {
+		if field.embedded() {
 			fl |= flagEmbedRO
 		} else {
 			fl |= flagStickyRO

compiler/package.go

@@ -592,7 +592,7 @@ func (c *funcContext) initArgs(ty types.Type) string {
 			if !field.Exported() {
 				pkgPath = field.Pkg().Path()
 			}
-			fields[i] = fmt.Sprintf(`{prop: "%s", name: %s, anonymous: %t, exported: %t, typ: %s, tag: %s}`, fieldName(t, i), encodeString(field.Name()), field.Anonymous(), field.Exported(), c.typeName(field.Type()), encodeString(t.Tag(i)))
+			fields[i] = fmt.Sprintf(`{prop: "%s", name: %s, embedded: %t, exported: %t, typ: %s, tag: %s}`, fieldName(t, i), encodeString(field.Name()), field.Anonymous(), field.Exported(), c.typeName(field.Type()), encodeString(t.Tag(i)))
 		}
 		return fmt.Sprintf(`"%s", [%s]`, pkgPath, strings.Join(fields, ", "))
 	default:

compiler/prelude/types.go

@@ -289,7 +289,7 @@ var $newType = function(size, kind, string, named, pkg, exported, constructor) {
           };
         };
         fields.forEach(function(f) {
-          if (f.anonymous) {
+          if (f.embedded) {
             $methodSet(f.typ).forEach(function(m) {
               synthesizeMethod(typ, m, f);
               synthesizeMethod(typ.ptr, m, f);
@@ -429,7 +429,7 @@ var $methodSet = function(typ) {
       switch (e.typ.kind) {
       case $kindStruct:
         e.typ.fields.forEach(function(f) {
-          if (f.anonymous) {
+          if (f.embedded) {
             var fTyp = f.typ;
             var fIsPtr = (fTyp.kind === $kindPtr);
             next.push({typ: fIsPtr ? fTyp.elem : fTyp, indirect: e.indirect || fIsPtr});