core: Replace num_enum with num_derive

core/Cargo.toml

@@ -21,15 +21,15 @@ ruffle_macros = { path = "macros" }
 swf = { path = "../swf" }
 bitflags = "1.2.1"
 smallvec = "1.6.1"
-num_enum = "0.5.1"
+num-traits = "0.2"
+num-derive = "0.3"
 quick-xml = "0.22.0"
 downcast-rs = "1.2.0"
 url = "2.2.2"
 weak-table = "0.3.0"
 percent-encoding = "2.1.0"
 thiserror = "1.0"
 chrono = "0.4"
-num-traits = "0.2"
 instant = "0.1"
 encoding_rs = "0.8.28"
 rand = { version = "0.8.3", features = ["std", "small_rng"], default-features = false }

core/src/avm1/globals/key.rs

@@ -5,7 +5,6 @@ use crate::avm1::property_decl::{define_properties_on, Declaration};
 use crate::avm1::{Object, ScriptObject, Value};
 use crate::events::KeyCode;
 use gc_arena::MutationContext;
-use std::convert::TryFrom;
 
 const OBJECT_DECLS: &[Declaration] = declare_properties! {
     "ALT" => int(18; DONT_ENUM | DONT_DELETE | READ_ONLY);
@@ -40,7 +39,7 @@ pub fn is_down<'gc>(
     if let Some(key) = args
         .get(0)
         .and_then(|v| v.coerce_to_f64(activation).ok())
-        .and_then(|k| KeyCode::try_from(k as u8).ok())
+        .and_then(|k| KeyCode::from_u8(k as u8))
     {
         Ok(activation.context.ui.is_key_down(key).into())
     } else {
@@ -62,7 +61,7 @@ pub fn get_code<'gc>(
     _this: Object<'gc>,
     _args: &[Value<'gc>],
 ) -> Result<Value<'gc>, Error<'gc>> {
-    let code: u8 = activation.context.ui.last_key_code().into();
+    let code = activation.context.ui.last_key_code().to_u8();
     Ok(code.into())
 }
 

core/src/avm1/globals/system.rs

@@ -8,8 +8,6 @@ use crate::avm_warn;
 use bitflags::bitflags;
 use core::fmt;
 use gc_arena::MutationContext;
-use num_enum::TryFromPrimitive;
-use std::convert::TryFrom;
 
 const OBJECT_DECLS: &[Declaration] = declare_properties! {
     "exactSettings" => property(get_exact_settings, set_exact_settings);
@@ -215,15 +213,20 @@ impl fmt::Display for PlayerType {
     }
 }
 
-#[derive(Debug, Copy, Clone, TryFromPrimitive)]
-#[repr(u8)]
+#[derive(Debug, Copy, Clone, FromPrimitive)]
 enum SettingsPanel {
     Privacy = 0,
     LocalStorage = 1,
     Microphone = 2,
     Camera = 3,
 }
 
+impl SettingsPanel {
+    pub fn from_u8(n: u8) -> Option<Self> {
+        num_traits::FromPrimitive::from_u8(n)
+    }
+}
+
 bitflags! {
     pub struct SystemCapabilities: u32 {
         const AV_HARDWARE      = 1 << 0;
@@ -438,7 +441,7 @@ pub fn show_settings<'gc>(
         .unwrap_or(&Value::Number(last_panel_pos as f64))
         .coerce_to_i32(activation)?;
 
-    let panel = SettingsPanel::try_from(panel_pos as u8).unwrap_or(SettingsPanel::Privacy);
+    let panel = SettingsPanel::from_u8(panel_pos as u8).unwrap_or(SettingsPanel::Privacy);
 
     avm_warn!(
         activation,

core/src/display_object/avm1_button.rs

@@ -12,7 +12,6 @@ use crate::types::{Degrees, Percent};
 use crate::vminterface::Instantiator;
 use gc_arena::{Collect, GcCell, MutationContext};
 use std::collections::BTreeMap;
-use std::convert::TryFrom;
 use std::sync::Arc;
 use swf::ButtonActionCondition;
 
@@ -55,9 +54,7 @@ impl<'gc> Avm1Button<'gc> {
                     actions.push(ButtonAction {
                         action_data: action_data.clone(),
                         condition: ButtonActionCondition::from_bits_truncate(bit),
-                        key_code: action
-                            .key_code
-                            .and_then(|k| ButtonKeyCode::try_from(k).ok()),
+                        key_code: action.key_code.and_then(ButtonKeyCode::from_u8),
                     });
                 }
                 bit <<= 1;

core/src/display_object/avm2_button.rs

@@ -13,7 +13,6 @@ use crate::tag_utils::{SwfMovie, SwfSlice};
 use crate::types::{Degrees, Percent};
 use crate::vminterface::Instantiator;
 use gc_arena::{Collect, GcCell, MutationContext};
-use std::convert::TryFrom;
 use std::sync::Arc;
 use swf::ButtonActionCondition;
 
@@ -77,9 +76,7 @@ impl<'gc> Avm2Button<'gc> {
                     actions.push(ButtonAction {
                         action_data: action_data.clone(),
                         condition: ButtonActionCondition::from_bits_truncate(bit),
-                        key_code: action
-                            .key_code
-                            .and_then(|k| ButtonKeyCode::try_from(k).ok()),
+                        key_code: action.key_code.and_then(ButtonKeyCode::from_u8),
                     });
                 }
                 bit <<= 1;

core/src/display_object/movie_clip.rs

@@ -33,7 +33,6 @@ use gc_arena::{Collect, Gc, GcCell, MutationContext};
 use smallvec::SmallVec;
 use std::cell::{Ref, RefCell, RefMut};
 use std::collections::HashMap;
-use std::convert::TryFrom;
 use std::sync::Arc;
 use swf::extensions::ReadSwfExt;
 use swf::{FrameLabelData, Tag};
@@ -3498,7 +3497,7 @@ impl ClipAction {
                 ClipEventFlag::KEY_DOWN => ClipEvent::KeyDown,
                 ClipEventFlag::KEY_PRESS => ClipEvent::KeyPress {
                     key_code: key_code
-                        .and_then(|k| ButtonKeyCode::try_from(k).ok())
+                        .and_then(ButtonKeyCode::from_u8)
                         .unwrap_or(ButtonKeyCode::Unknown),
                 },
                 ClipEventFlag::LOAD => ClipEvent::Load,

core/src/events.rs

@@ -1,5 +1,3 @@
-use num_enum::{IntoPrimitive, TryFromPrimitive};
-
 #[derive(Debug)]
 pub enum PlayerEvent {
     KeyDown { key_code: KeyCode },
@@ -137,8 +135,7 @@ impl ClipEvent {
 }
 
 /// Flash virtual keycode.
-#[derive(Debug, Copy, Clone, PartialEq, Eq, TryFromPrimitive, IntoPrimitive)]
-#[repr(u8)]
+#[derive(Debug, Copy, Clone, PartialEq, Eq, FromPrimitive, ToPrimitive)]
 pub enum KeyCode {
     Unknown = 0,
     Backspace = 8,
@@ -238,13 +235,22 @@ pub enum KeyCode {
     Apostrophe = 222,
 }
 
+impl KeyCode {
+    pub fn from_u8(n: u8) -> Option<Self> {
+        num_traits::FromPrimitive::from_u8(n)
+    }
+
+    pub fn to_u8(&self) -> u8 {
+        num_traits::ToPrimitive::to_u8(self).unwrap()
+    }
+}
+
 /// Key codes for SWF4 keyPress button handlers. These are annoyingly different than
 /// `Key.isDown` key codes.
 /// TODO: After 18, these are mostly ASCII... should we just use u8? How are different
 /// keyboard layouts/languages handled?
 /// SWF19 pp. 198-199
-#[derive(Debug, PartialEq, Eq, Copy, Clone, TryFromPrimitive, IntoPrimitive)]
-#[repr(u8)]
+#[derive(Debug, PartialEq, Eq, Copy, Clone, FromPrimitive)]
 pub enum ButtonKeyCode {
     Unknown = 0,
     Left = 1,
@@ -358,6 +364,12 @@ pub enum ButtonKeyCode {
     Tilde = 126,
 }
 
+impl ButtonKeyCode {
+    pub fn from_u8(n: u8) -> Option<Self> {
+        num_traits::FromPrimitive::from_u8(n)
+    }
+}
+
 pub fn key_code_to_button_key_code(key_code: KeyCode) -> Option<ButtonKeyCode> {
     let out = match key_code {
         KeyCode::Left => ButtonKeyCode::Left,

core/src/lib.rs

@@ -18,6 +18,9 @@ extern crate smallvec;
 #[macro_use]
 extern crate downcast_rs;
 
+#[macro_use]
+extern crate num_derive;
+
 #[macro_use]
 mod avm1;
 mod avm2;

core/src/player.rs

@@ -34,7 +34,6 @@ use instant::Instant;
 use log::info;
 use rand::{rngs::SmallRng, SeedableRng};
 use std::collections::{HashMap, VecDeque};
-use std::convert::TryFrom;
 use std::ops::DerefMut;
 use std::sync::{Arc, Mutex, Weak};
 use std::time::Duration;
@@ -826,7 +825,7 @@ impl Player {
                 if codepoint as u32 >= 32 && codepoint as u32 <= 126 =>
             {
                 Some(ClipEvent::KeyPress {
-                    key_code: ButtonKeyCode::try_from(codepoint as u8).unwrap(),
+                    key_code: ButtonKeyCode::from_u8(codepoint as u8).unwrap(),
                 })
             }