Run parser: deserialize the AutoSplitterSettings

This commit implements the deserialization of the AutoSplitterSettings XML section of a LiveSplit splits file.
This can surely use some improvements regarding the compatibility without the auto-splitting feature and some other things.
I think it is good as a first step though and we can keep iterating on it.

crates/livesplit-auto-splitting/src/settings/gui.rs

@@ -2,7 +2,7 @@ use std::sync::Arc;
 
 /// A setting widget that is meant to be shown to and modified by the user.
 #[non_exhaustive]
-#[derive(Clone)]
+#[derive(Clone, PartialEq)]
 pub struct Widget {
     /// A unique identifier for this setting. This is not meant to be shown to
     /// the user and is only used to keep track of the setting. This key is used
@@ -19,7 +19,7 @@ pub struct Widget {
 }
 
 /// The type of a [`Widget`] and additional information about it.
-#[derive(Clone)]
+#[derive(Debug, Clone, PartialEq)]
 pub enum WidgetKind {
     /// A title that is shown to the user. It doesn't by itself store a value
     /// and is instead used to group settings together.
@@ -51,7 +51,7 @@ pub enum WidgetKind {
 }
 
 /// A filter for a file selection setting.
-#[derive(Clone)]
+#[derive(Clone, Debug, PartialEq)]
 pub enum FileFilter {
     /// A filter that matches on the name of the file.
     Name {
@@ -82,7 +82,7 @@ pub enum FileFilter {
 }
 
 /// An option for a choice setting.
-#[derive(Clone, Eq, Hash, PartialEq)]
+#[derive(Clone, Debug, Eq, Hash, PartialEq)]
 pub struct ChoiceOption {
     /// The unique identifier of the option. This is not meant to be shown to
     /// the user and is only used to keep track of the option. This key is used

src/auto_splitting/mod.rs

@@ -559,15 +559,16 @@ use crate::{
 use arc_swap::ArcSwapOption;
 pub use livesplit_auto_splitting::{settings, wasi_path};
 use livesplit_auto_splitting::{
-    AutoSplitter, Config, CreationError, LogLevel, Timer as AutoSplitTimer, TimerState,
+    AutoSplitter, CompiledAutoSplitter, Config, CreationError, LogLevel,
+    Timer as AutoSplitTimer, TimerState,
 };
 use snafu::Snafu;
 use std::{
     fmt, fs, io,
     path::PathBuf,
     sync::{
         mpsc::{self, Receiver, RecvTimeoutError, Sender},
-        Condvar, Mutex,
+        Condvar, Mutex, RwLock,
     },
     thread,
     time::{Duration, Instant},
@@ -602,6 +603,7 @@ pub struct Runtime<T: event::CommandSink + TimerQuery + Send + 'static> {
     shared_state: Arc<SharedState<T>>,
     changed_sender: Sender<()>,
     runtime: livesplit_auto_splitting::Runtime,
+    compiled_auto_splitter: RwLock<Option<CompiledAutoSplitter>>,
 }
 
 struct SharedState<T> {
@@ -676,18 +678,32 @@ impl<T: event::CommandSink + TimerQuery + Send + 'static> Runtime<T> {
             changed_sender,
             // TODO: unwrap?
             runtime: livesplit_auto_splitting::Runtime::new(Config::default()).unwrap(),
+            compiled_auto_splitter: RwLock::new(None),
         }
     }
 
     /// Attempts to load a wasm file containing an auto splitter module.
     pub fn load(&self, path: PathBuf, timer: T) -> Result<(), Error> {
         let data = fs::read(path).map_err(|e| Error::ReadFileFailed { source: e })?;
 
-        let auto_splitter = self
+        let compiled_auto_splitter = self
             .runtime
             .compile(&data)
-            .map_err(|e| Error::LoadFailed { source: e })?
-            .instantiate(Timer(timer), None, None)
+            .map_err(|e| Error::LoadFailed { source: e })?;
+        self.instantiate(&compiled_auto_splitter, timer)?;
+        *self.compiled_auto_splitter.write().unwrap() = Some(compiled_auto_splitter);
+        Ok(())
+    }
+
+    /// Instantiates the compiled auto splitter.
+    fn instantiate(
+        &self,
+        compiled_auto_splitter: &CompiledAutoSplitter,
+        timer: T,
+    ) -> Result<(), Error> {
+        let settings_map = timer.get_timer().run().auto_splitter_settings_map_load();
+        let auto_splitter = compiled_auto_splitter
+            .instantiate(Timer(timer), settings_map, None)
             .map_err(|e| Error::LoadFailed { source: e })?;
 
         self.shared_state
@@ -710,6 +726,15 @@ impl<T: event::CommandSink + TimerQuery + Send + 'static> Runtime<T> {
             .map_err(|_| Error::ThreadStopped)
     }
 
+    /// Reloads the auto splitter without re-compiling.
+    pub fn reload(&self, timer: T) -> Result<(), Error> {
+        self.unload()?;
+        if let Some(compiled_auto_splitter) = self.compiled_auto_splitter.read().unwrap().as_ref() {
+            self.instantiate(compiled_auto_splitter, timer)?;
+        }
+        Ok(())
+    }
+
     /// Accesses a copy of the currently stored settings. The auto splitter can
     /// change these at any time. If you intend to make modifications to the
     /// settings, you need to set them again via

src/platform/no_std/mod.rs

@@ -1,8 +1,10 @@
 mod time;
 pub use self::time::*;
 
+#[allow(unused)]
 pub struct RwLock<T>(core::cell::RefCell<T>);
 
+#[allow(unused)]
 impl<T> RwLock<T> {
     pub fn new(value: T) -> Self {
         Self(core::cell::RefCell::new(value))

src/run/auto_splitter_settings.rs

@@ -0,0 +1,24 @@
+use crate::run::parser::livesplit::Version;
+use core::fmt::Debug;
+use livesplit_auto_splitting::settings;
+
+#[derive(Debug, Default, Clone, PartialEq)]
+pub struct AutoSplitterSettings {
+    pub version: Version,
+    pub script_path: String,
+    pub custom_settings: settings::Map,
+}
+
+impl AutoSplitterSettings {
+    pub fn set_version(&mut self, version: Version) {
+        self.version = version;
+    }
+
+    pub fn set_script_path(&mut self, script_path: String) {
+        self.script_path = script_path;
+    }
+
+    pub fn set_custom_settings(&mut self, custom_settings: settings::Map) {
+        self.custom_settings = custom_settings;
+    }
+}

src/run/mod.rs

@@ -15,6 +15,9 @@
 //! ```
 
 mod attempt;
+
+#[cfg(feature = "auto-splitting")]
+mod auto_splitter_settings;
 mod comparisons;
 pub mod editor;
 mod linked_layout;
@@ -35,6 +38,8 @@ pub use run_metadata::{CustomVariable, RunMetadata};
 pub use segment::Segment;
 pub use segment_history::SegmentHistory;
 
+#[cfg(feature = "auto-splitting")]
+use crate::run::auto_splitter_settings::AutoSplitterSettings;
 use crate::{
     comparison::{default_generators, personal_best, ComparisonGenerator, RACE_COMPARISON_PREFIX},
     platform::prelude::*,
@@ -75,6 +80,8 @@ pub struct Run {
     custom_comparisons: Vec<String>,
     comparison_generators: ComparisonGenerators,
     auto_splitter_settings: String,
+    #[cfg(feature = "auto-splitting")]
+    parsed_auto_splitter_settings: Option<AutoSplitterSettings>,
     linked_layout: Option<LinkedLayout>,
 }
 
@@ -128,6 +135,8 @@ impl Run {
             custom_comparisons: vec![personal_best::NAME.to_string()],
             comparison_generators: ComparisonGenerators(default_generators()),
             auto_splitter_settings: String::new(),
+            #[cfg(feature = "auto-splitting")]
+            parsed_auto_splitter_settings: None,
             linked_layout: None,
         }
     }
@@ -326,6 +335,40 @@ impl Run {
         &mut self.auto_splitter_settings
     }
 
+    /// Loads a copy of the Auto Splitter Settings as a settings map.
+    #[inline]
+    #[cfg(feature = "auto-splitting")]
+    pub fn auto_splitter_settings_map_load(
+        &self,
+    ) -> Option<livesplit_auto_splitting::settings::Map> {
+        if let Some(p) = &self.parsed_auto_splitter_settings {
+            return Some(p.custom_settings.clone());
+        }
+        None
+    }
+
+    /// Stores a settings map into the parsed auto splitter settings.
+    #[cfg(feature = "auto-splitting")]
+    pub fn auto_splitter_settings_map_store(
+        &mut self,
+        settings_map: livesplit_auto_splitting::settings::Map,
+    ) {
+        let p = &mut self.parsed_auto_splitter_settings;
+        match p {
+            None => {
+                if settings_map.is_empty() {
+                    return;
+                }
+                let mut a = AutoSplitterSettings::default();
+                a.set_custom_settings(settings_map);
+                *p = Some(a);
+            }
+            Some(a) => {
+                a.set_custom_settings(settings_map);
+            }
+        }
+    }
+
     /// Accesses the [`LinkedLayout`] of this `Run`. If a
     /// [`Layout`](crate::Layout) is linked, it is supposed to be loaded to
     /// visualize the `Run`.