Unmarshal into pointers

README.md

@@ -8,7 +8,7 @@ Development branch. Probably does not work.
 
 - [x] Unmarshal into maps.
 - [x] Support Array Tables.
-- [ ] Unmarshal into pointers.
+- [x] Unmarshal into pointers.
 - [ ] Support Date / times.
 - [ ] Support Unmarshaler interface.
 - [ ] Support struct tags annotations.

internal/imported_tests/unmarshal_imported_test.go

@@ -138,13 +138,8 @@ func TestInterface(t *testing.T) {
 func TestBasicUnmarshal(t *testing.T) {
 	result := basicMarshalTestStruct{}
 	err := toml.Unmarshal(basicTestToml, &result)
-	expected := basicTestData
-	if err != nil {
-		t.Fatal(err)
-	}
-	if !reflect.DeepEqual(result, expected) {
-		t.Errorf("Bad unmarshal: expected %v, got %v", expected, result)
-	}
+	require.NoError(t, err)
+	require.Equal(t, basicTestData, result)
 }
 
 type quotedKeyMarshalTestStruct struct {

targets.go

@@ -229,16 +229,20 @@ func scopeTableTarget(append bool, t target, name string) (target, error) {
 	x := t.get()
 
 	switch x.Kind() {
+	// Kinds that need to recurse
+
 	case reflect.Interface:
 		t, err := scopeInterface(append, t)
 		if err != nil {
 			return t, err
 		}
 		return scopeTableTarget(append, t, name)
-	case reflect.Struct:
-		return scopeStruct(x, name)
-	case reflect.Map:
-		return scopeMap(x, name)
+	case reflect.Ptr:
+		t, err := scopePtr(t)
+		if err != nil {
+			return t, err
+		}
+		return scopeTableTarget(append, t, name)
 	case reflect.Slice:
 		t, err := scopeSlice(append, t)
 		if err != nil {
@@ -246,6 +250,13 @@ func scopeTableTarget(append bool, t target, name string) (target, error) {
 		}
 		append = false
 		return scopeTableTarget(append, t, name)
+
+	// Terminal kinds
+
+	case reflect.Struct:
+		return scopeStruct(x, name)
+	case reflect.Map:
+		return scopeMap(x, name)
 	default:
 		panic(fmt.Errorf("can't scope on a %s", x.Kind()))
 	}
@@ -260,6 +271,22 @@ func scopeInterface(append bool, t target) (target, error) {
 	return interfaceTarget{t}, nil
 }
 
+func scopePtr(t target) (target, error) {
+	err := initPtr(t)
+	if err != nil {
+		return t, err
+	}
+	return valueTarget(t.get().Elem()), nil
+}
+
+func initPtr(t target) error {
+	x := t.get()
+	if !x.IsNil() {
+		return nil
+	}
+	return t.set(reflect.New(x.Type().Elem()))
+}
+
 // initInterface makes sure that the interface pointed at by the target is not
 // nil.
 // Returns the target to the initialized value of the target.