feat: cli versions

internal/cli/codec.go

@@ -0,0 +1,55 @@
+package cli
+
+import (
+	"fmt"
+
+	"git.maximhutz.com/max/lambda/pkg/codec"
+)
+
+type Codec interface {
+	codec.Codec[Repr, Repr]
+
+	InType() string
+	OutType() string
+}
+
+type convertedCodec[T, U any] struct {
+	codec           codec.Codec[T, U]
+	inType, outType string
+}
+
+func (c convertedCodec[T, U]) Decode(r Repr) (Repr, error) {
+	u, ok := r.Data().(U)
+	if !ok {
+		return nil, fmt.Errorf("could not parse '%v' as '%s'", r, c.inType)
+	}
+
+	t, err := c.codec.Decode(u)
+	if err != nil {
+		return nil, err
+	}
+
+	return NewRepr(c.outType, t), nil
+}
+
+func (c convertedCodec[T, U]) Encode(r Repr) (Repr, error) {
+	t, ok := r.Data().(T)
+	if !ok {
+		return nil, fmt.Errorf("could not parse '%v' as '%s'", t, c.outType)
+	}
+
+	u, err := c.codec.Encode(t)
+	if err != nil {
+		return nil, err
+	}
+
+	return NewRepr(c.inType, u), nil
+}
+
+func (c convertedCodec[T, U]) InType() string { return c.inType }
+
+func (c convertedCodec[T, U]) OutType() string { return c.outType }
+
+func ConvertCodec[T, U any](e codec.Codec[T, U], inType, outType string) Codec {
+	return convertedCodec[T, U]{e, inType, outType}
+}

internal/cli/engine.go

@@ -0,0 +1,49 @@
+package cli
+
+import (
+	"fmt"
+
+	"git.maximhutz.com/max/lambda/pkg/engine"
+)
+
+type Engine interface {
+	engine.Engine[Repr]
+
+	Name() string
+	InType() string
+}
+
+type convertedEngine[T any] struct {
+	engine engine.Engine[T]
+	name   string
+	inType string
+}
+
+func (b convertedEngine[T]) InType() string { return b.inType }
+
+func (b convertedEngine[T]) Name() string { return b.name }
+
+func (b convertedEngine[T]) Get() (Repr, error) {
+	s, err := b.engine.Get()
+	if err != nil {
+		return nil, err
+	}
+
+	return NewRepr(b.inType, s), nil
+}
+
+func (b convertedEngine[T]) Set(r Repr) error {
+	if t, ok := r.Data().(T); ok {
+		return b.engine.Set(t)
+	}
+
+	return fmt.Errorf("Incorrent format '%s' for engine '%s'.", r.Id(), b.inType)
+}
+
+func (b convertedEngine[T]) Step(i int) bool {
+	return b.engine.Step(i)
+}
+
+func ConvertEngine[T any](e engine.Engine[T], name string, inType string) Engine {
+	return convertedEngine[T]{e, name, inType}
+}

internal/cli/marshaler.go

@@ -0,0 +1,42 @@
+package cli
+
+import (
+	"fmt"
+
+	"git.maximhutz.com/max/lambda/pkg/codec"
+)
+
+type Marshaler interface {
+	codec.Marshaler[Repr]
+
+	InType() string
+}
+
+type convertedMarshaler[T any] struct {
+	codec  codec.Marshaler[T]
+	inType string
+}
+
+func (c convertedMarshaler[T]) Decode(s string) (Repr, error) {
+	t, err := c.codec.Decode(s)
+	if err != nil {
+		return nil, err
+	}
+
+	return NewRepr(c.inType, t), nil
+}
+
+func (c convertedMarshaler[T]) Encode(r Repr) (string, error) {
+	t, ok := r.Data().(T)
+	if !ok {
+		return "", fmt.Errorf("could not parse '%v' as 'string'", t)
+	}
+
+	return c.codec.Encode(t)
+}
+
+func (c convertedMarshaler[T]) InType() string { return c.inType }
+
+func ConvertMarshaler[T any](e codec.Marshaler[T], inType string) Marshaler {
+	return convertedMarshaler[T]{e, inType}
+}

internal/cli/repr.go

@@ -0,0 +1,21 @@
+package cli
+
+type Repr interface {
+	// Id returns to name of the objects underlying representation. If is
+	// assumed that if two Repr objects have the same Id(), they share the same
+	// representation.
+	Id() string
+
+	Data() any
+}
+
+type baseRepr struct {
+	id   string
+	data any
+}
+
+func (r baseRepr) Id() string { return r.id }
+
+func (r baseRepr) Data() any { return r.data }
+
+func NewRepr(id string, data any) Repr { return baseRepr{id, data} }