refactor: migrate derive(Show) to Debug with Show compat impls

Author: Milky2018

alsa/host.mbt

@@ -20,14 +20,14 @@
 ///|
 pub struct Host {
   _unit : Unit
-} derive(Show, Eq)
+} derive(Debug, Eq)
 
 ///|
 pub struct Device {
   id : String
   desc : String?
   direction : @core.DeviceDirection
-} derive(Show, Eq)
+} derive(Debug, Eq)
 
 ///|
 pub fn default_host() -> Host {

alsa/moon.pkg

@@ -1,5 +1,6 @@
 import {
   "Milky2018/moon_cpal/core",
+  "moonbitlang/core/debug",
 }
 
 supported_targets = "native"

alsa/pkg.generated.mbti

@@ -3,6 +3,7 @@ package "Milky2018/moon_cpal/alsa"
 
 import {
   "Milky2018/moon_cpal/core",
+  "moonbitlang/core/debug",
 }
 
 // Values
@@ -19,7 +20,7 @@ pub struct Device {
   id : String
   desc : String?
   direction : @core.DeviceDirection
-} derive(Eq, Show)
+} derive(Eq, @debug.Debug)
 pub fn Device::build_input_stream(Self, @core.StreamConfig, (@core.Data, @core.InputCallbackInfo) -> Unit, (@core.StreamError) -> Unit, @core.Duration?) -> Stream raise @core.BuildStreamError
 pub fn Device::build_input_stream_raw(Self, @core.StreamConfig, @core.SampleFormat, (@core.Data, @core.InputCallbackInfo) -> Unit, (@core.StreamError) -> Unit, @core.Duration?) -> Stream raise @core.BuildStreamError
 pub fn Device::build_output_stream(Self, @core.StreamConfig, (@core.Data, @core.OutputCallbackInfo) -> Unit, (@core.StreamError) -> Unit, @core.Duration?) -> Stream raise @core.BuildStreamError
@@ -33,13 +34,15 @@ pub fn Device::supported_input_configs(Self) -> Array[@core.SupportedStreamConfi
 pub fn Device::supported_output_configs(Self) -> Array[@core.SupportedStreamConfigRange] raise @core.SupportedStreamConfigsError
 pub fn Device::supports_input(Self) -> Bool
 pub fn Device::supports_output(Self) -> Bool
+pub impl Show for Device
 
 pub struct Host {
   _unit : Unit
-} derive(Eq, Show)
+} derive(Eq, @debug.Debug)
 pub fn Host::default_input_device(Self) -> Device?
 pub fn Host::default_output_device(Self) -> Device?
 pub fn Host::devices(Self) -> Array[Device]
+pub impl Show for Host
 
 pub struct Stream {
   kind : StreamKind
@@ -51,11 +54,13 @@ pub fn Stream::pause(Self) -> Unit raise @core.PauseStreamError
 pub fn Stream::play(Self) -> Unit raise @core.PlayStreamError
 pub impl Eq for Stream
 pub impl Show for Stream
+pub impl @debug.Debug for Stream
 
 pub enum StreamKind {
   Output
   Input
-} derive(Eq, Show)
+} derive(Eq, @debug.Debug)
+pub impl Show for StreamKind
 
 type StreamOwner
 

alsa/show_compat.mbt

@@ -0,0 +1,41 @@
+// Copyright 2025 International Digital Economy Academy
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+///|
+fn[T : @debug.Debug] show_from_debug(value : T, logger : &Logger) -> Unit {
+  let rendered = @debug.render(@debug.Debug::to_repr(value))
+  logger.write_string(
+    rendered
+    .replace_all(old="{ ", new="{")
+    .replace_all(old=" }", new="}"),
+  )
+}
+
+///|
+pub impl Show for Host with output(self : Host, logger : &Logger) -> Unit {
+  show_from_debug(self, logger)
+}
+
+///|
+pub impl Show for Device with output(self : Device, logger : &Logger) -> Unit {
+  show_from_debug(self, logger)
+}
+
+///|
+pub impl Show for StreamKind with output(
+  self : StreamKind,
+  logger : &Logger,
+) -> Unit {
+  show_from_debug(self, logger)
+}

alsa/stream_types.mbt

@@ -23,7 +23,7 @@
 pub enum StreamKind {
   Output
   Input
-} derive(Show, Eq)
+} derive(Debug, Eq)
 
 ///|
 // An external object that owns native stream resources.
@@ -44,6 +44,11 @@ pub impl Eq for Stream with equal(self : Stream, other : Stream) -> Bool {
   self.kind == other.kind && self.handle == other.handle
 }
 
+///|
+pub impl @debug.Debug for Stream with to_repr(self : Stream) -> @debug.Repr {
+  @debug.Debug::to_repr((self.kind, self.handle))
+}
+
 ///|
 pub impl Show for Stream with output(self : Stream, logger : &Logger) -> Unit {
   logger.write_string("\{self.kind}(\{self.handle})")

core/cpal_callback_info.mbt

@@ -28,7 +28,7 @@ pub struct InputStreamTimestamp {
     callback : StreamInstant,
     capture : StreamInstant,
   ) -> InputStreamTimestamp
-} derive(Show, Eq)
+} derive(Debug, Eq)
 
 ///|
 pub fn InputStreamTimestamp::new(
@@ -62,7 +62,7 @@ pub struct OutputStreamTimestamp {
     callback : StreamInstant,
     playback : StreamInstant,
   ) -> OutputStreamTimestamp
-} derive(Show, Eq)
+} derive(Debug, Eq)
 
 ///|
 pub fn OutputStreamTimestamp::new(
@@ -92,7 +92,7 @@ pub struct InputCallbackInfo {
   timestamp : InputStreamTimestamp
 
   fn new(timestamp : InputStreamTimestamp) -> InputCallbackInfo
-} derive(Show, Eq)
+} derive(Debug, Eq)
 
 ///|
 pub fn InputCallbackInfo::new(
@@ -114,7 +114,7 @@ pub struct OutputCallbackInfo {
   timestamp : OutputStreamTimestamp
 
   fn new(timestamp : OutputStreamTimestamp) -> OutputCallbackInfo
-} derive(Show, Eq)
+} derive(Debug, Eq)
 
 ///|
 pub fn OutputCallbackInfo::new(

core/cpal_data.mbt

@@ -32,7 +32,7 @@ pub struct Data {
   bytes : FixedArray[Byte]
 
   fn new(sample_format : SampleFormat, bytes : FixedArray[Byte]) -> Data
-} derive(Show, Eq)
+} derive(Debug, Eq)
 
 ///|
 pub fn Data::new(

core/cpal_device_description.mbt

@@ -30,7 +30,7 @@ pub enum DeviceType {
   Tuner
   Virtual
   Unknown
-} derive(Show, Eq)
+} derive(Debug, Eq)
 
 ///|
 pub fn DeviceType::speaker() -> DeviceType {
@@ -103,7 +103,7 @@ pub enum InterfaceType {
   DisplayPort
   Aggregate
   Unknown
-} derive(Show, Eq)
+} derive(Debug, Eq)
 
 ///|
 pub fn InterfaceType::built_in() -> InterfaceType {
@@ -181,7 +181,7 @@ pub enum DeviceDirection {
   Output
   Duplex
   Unknown
-} derive(Show, Eq)
+} derive(Debug, Eq)
 
 ///|
 pub fn DeviceDirection::input() -> DeviceDirection {
@@ -224,7 +224,7 @@ pub struct DeviceDescription {
     address? : String?,
     extended? : Array[String],
   ) -> DeviceDescription
-} derive(Show, Eq)
+} derive(Debug, Eq)
 
 ///|
 pub fn DeviceDescription::new(
@@ -389,7 +389,7 @@ pub struct DeviceDescriptionBuilder {
   extended : Array[String]
 
   fn new(name : String) -> DeviceDescriptionBuilder
-} derive(Show, Eq)
+} derive(Debug, Eq)
 
 ///|
 pub fn DeviceDescriptionBuilder::new(name : String) -> DeviceDescriptionBuilder {

core/cpal_device_id.mbt

@@ -21,7 +21,7 @@
 pub suberror DeviceIdError {
   UnsupportedPlatform
   BackendSpecific(BackendSpecificError)
-} derive(Show, Eq)
+} derive(Debug, Eq)
 
 ///|
 pub fn device_id_error_unsupported_platform() -> DeviceIdError {
@@ -48,7 +48,7 @@ pub struct DeviceId {
   device_id : String
 
   fn new(host_id : HostId, device_id : String) -> DeviceId
-} derive(Show, Eq)
+} derive(Debug, Eq)
 
 ///|
 pub fn DeviceId::new(host_id : HostId, device_id : String) -> DeviceId {

core/cpal_error.mbt

@@ -22,7 +22,7 @@ pub struct BackendSpecificError {
   description : String
 
   fn new(description : String) -> BackendSpecificError
-} derive(Show, Eq)
+} derive(Debug, Eq)
 
 ///|
 pub fn BackendSpecificError::new(description : String) -> BackendSpecificError {
@@ -46,7 +46,7 @@ pub suberror DefaultStreamConfigError {
   DeviceBusy
   StreamTypeNotSupported
   BackendSpecific(BackendSpecificError)
-} derive(Show, Eq)
+} derive(Debug, Eq)
 
 ///|
 pub fn DefaultStreamConfigError::to_string(
@@ -70,7 +70,7 @@ pub suberror SupportedStreamConfigsError {
   DeviceBusy
   InvalidArgument
   BackendSpecific(BackendSpecificError)
-} derive(Show, Eq)
+} derive(Debug, Eq)
 
 ///|
 pub fn SupportedStreamConfigsError::to_string(
@@ -91,7 +91,7 @@ pub fn SupportedStreamConfigsError::to_string(
 /// An error that might occur while attempting to enumerate devices.
 pub suberror DevicesError {
   BackendSpecific(BackendSpecificError)
-} derive(Show, Eq)
+} derive(Debug, Eq)
 
 ///|
 pub fn DevicesError::to_string(self : DevicesError) -> String {
@@ -104,7 +104,7 @@ pub fn DevicesError::to_string(self : DevicesError) -> String {
 /// An error that may occur while attempting to retrieve a device name.
 pub suberror DeviceNameError {
   BackendSpecific(BackendSpecificError)
-} derive(Show, Eq)
+} derive(Debug, Eq)
 
 ///|
 pub fn DeviceNameError::to_string(self : DeviceNameError) -> String {
@@ -122,7 +122,7 @@ pub suberror BuildStreamError {
   InvalidArgument
   StreamIdOverflow
   BackendSpecific(BackendSpecificError)
-} derive(Show, Eq)
+} derive(Debug, Eq)
 
 ///|
 pub fn BuildStreamError::to_string(self : BuildStreamError) -> String {
@@ -145,7 +145,7 @@ pub fn BuildStreamError::to_string(self : BuildStreamError) -> String {
 pub suberror PlayStreamError {
   DeviceNotAvailable
   BackendSpecific(BackendSpecificError)
-} derive(Show, Eq)
+} derive(Debug, Eq)
 
 ///|
 pub fn PlayStreamError::to_string(self : PlayStreamError) -> String {
@@ -160,7 +160,7 @@ pub fn PlayStreamError::to_string(self : PlayStreamError) -> String {
 pub suberror PauseStreamError {
   DeviceNotAvailable
   BackendSpecific(BackendSpecificError)
-} derive(Show, Eq)
+} derive(Debug, Eq)
 
 ///|
 pub fn PauseStreamError::to_string(self : PauseStreamError) -> String {
@@ -177,7 +177,7 @@ pub suberror StreamError {
   StreamInvalidated
   BufferUnderrun
   BackendSpecific(BackendSpecificError)
-} derive(Show, Eq)
+} derive(Debug, Eq)
 
 ///|
 pub fn StreamError::to_string(self : StreamError) -> String {