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use std::collections::HashMap;
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use std::convert::TryInto;
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use std::any::{Any, TypeId};
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pub use rmpv::Value;
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use nvim_rs::Neovim;
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use nvim_rs::compat::tokio::Compat;
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use flexi_logger::{Logger, Criterion, Naming, Cleanup};
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use tokio::process::ChildStdin;
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use parking_lot::RwLock;
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use log::warn;
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use crate::error_handling::ResultPanicExplanation;
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lazy_static! {
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pub static ref SETTINGS: Settings = Settings::new();
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}
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pub trait FromValue {
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fn from_value(&mut self, value: Value);
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}
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impl FromValue for f32 {
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fn from_value(&mut self, value: Value) {
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// TODO -- Warn when incorrect type
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if value.is_f32() {
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*self = value.as_f64().unwrap() as f32;
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}
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}
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}
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impl FromValue for u64 {
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fn from_value(&mut self, value: Value) {
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// TODO -- Warn when incorrect type
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if value.is_u64() {
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*self = value.as_u64().unwrap();
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}
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}
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}
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impl FromValue for u32 {
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fn from_value(&mut self, value: Value) {
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// TODO -- Warn when incorrect type
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if value.is_u64() {
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*self = value.as_u64().unwrap() as u32;
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}
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}
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}
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impl FromValue for i32 {
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fn from_value(&mut self, value: Value) {
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// TODO -- Warn when incorrect type
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if value.is_i64() {
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*self = value.as_i64().unwrap() as i32;
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}
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}
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}
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impl FromValue for String {
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fn from_value(&mut self, value: Value) {
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// TODO -- Warn when incorrect type
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if value.is_str() {
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*self = String::from(value.as_str().unwrap());
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}
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}
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}
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impl FromValue for bool {
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fn from_value(&mut self, value: Value) {
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// TODO -- Warn when incorrect type
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if value.is_bool() {
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*self = value.as_bool().unwrap();
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}
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}
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}
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#[macro_export]
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macro_rules! register_nvim_setting {
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($vim_setting_name: expr, $type_name:ident :: $field_name: ident) => {{
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fn update_func(value: Value) {
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let mut s = SETTINGS.get::<$type_name>();
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s.$field_name.from_value(value);
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SETTINGS.set(&s);
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}
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fn reader_func() -> Value {
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let s = SETTINGS.get::<$type_name>();
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s.$field_name.into()
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}
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SETTINGS.add_handlers($vim_setting_name, update_func, reader_func);
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}};
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}
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type UpdateHandlerFunc = fn(Value);
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type ReaderFunc = fn()->Value;
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struct SettingsObject {
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object: Box<dyn Any + Send + Sync>,
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}
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pub struct Settings {
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pub neovim_arguments: Vec<String>,
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settings: RwLock<HashMap<TypeId, SettingsObject>>,
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listeners: RwLock<HashMap<String, UpdateHandlerFunc>>,
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readers: RwLock<HashMap<String, ReaderFunc>>,
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}
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impl Settings {
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fn new() -> Settings {
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let mut no_idle = false;
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let mut buffer_frames = 1;
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// TODO -- Make command line parsing work again
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let neovim_arguments = std::env::args().filter(|arg| {
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if arg == "--log" {
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Logger::with_str("neovide")
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.log_to_file()
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.rotate(Criterion::Size(10_000_000), Naming::Timestamps, Cleanup::KeepLogFiles(1))
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.start()
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.expect("Could not start logger");
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false
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} else if arg == "--noIdle" {
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no_idle = true;
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false
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} else if arg == "--extraBufferFrames" {
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buffer_frames = 60;
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false
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} else {
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true
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}
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}).collect::<Vec<String>>();
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Settings{
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neovim_arguments,
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settings: RwLock::new(HashMap::new()),
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listeners: RwLock::new(HashMap::new()),
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readers: RwLock::new(HashMap::new()),
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}
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}
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pub fn add_handlers(&self, property_name: &str, update_func: UpdateHandlerFunc, reader_func: ReaderFunc) {
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self.listeners.write().insert(String::from(property_name), update_func);
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self.readers.write().insert(String::from(property_name), reader_func);
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}
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pub fn set<T: Clone + Send + Sync + 'static >(&self, t: &T) {
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let type_id : TypeId = TypeId::of::<T>();
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let t : T = (*t).clone();
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self.settings.write().insert(type_id, SettingsObject{ object: Box::new(t)});
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}
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pub fn get<'a, T: Clone + Send + Sync + 'static>(&'a self) -> T {
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let read_lock = self.settings.read();
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let boxed = &read_lock.get(&TypeId::of::<T>()).expect("Trying to retrieve a settings object that doesn't exist");
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let value: &T = boxed.object.downcast_ref::<T>().expect("Attempted to extract a settings object of the wrong type");
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(*value).clone()
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}
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pub async fn read_initial_values(&self, nvim: &Neovim<Compat<ChildStdin>>) {
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let keys : Vec<String> = self.listeners.read().keys().cloned().collect();
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for name in keys {
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let variable_name = format!("neovide_{}", name.to_string());
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match nvim.get_var(&variable_name).await {
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Ok(value) => {
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self.listeners.read().get(&name).unwrap()(value);
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},
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Err(error) => {
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warn!("Initial value load failed for {}: {}", name, error);
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let setting = self.readers.read().get(&name).unwrap()();
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nvim.set_var(&variable_name, setting).await.ok();
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}
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}
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}
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}
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pub async fn setup_changed_listeners(&self, nvim: &Neovim<Compat<ChildStdin>>) {
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let keys : Vec<String> = self.listeners.read().keys().cloned().collect();
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for name in keys {
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|
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let vimscript = format!(
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concat!(
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"exe \"",
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|
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"fun! NeovideNotify{0}Changed(d, k, z)\n",
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"call rpcnotify(1, 'setting_changed', '{0}', g:neovide_{0})\n",
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"endf\n",
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"call dictwatcheradd(g:, 'neovide_{0}', 'NeovideNotify{0}Changed')\"",
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)
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, name);
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nvim.command(&vimscript).await
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.unwrap_or_explained_panic(&format!("Could not setup setting notifier for {}", name));
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}
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}
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pub fn handle_changed_notification(&self, arguments: Vec<Value>) {
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let mut arguments = arguments.into_iter();
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let (name, value) = (arguments.next().unwrap(), arguments.next().unwrap());
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let name: Result<String, _>= name.try_into();
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let name = name.unwrap();
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self.listeners.read().get(&name).unwrap()(value);
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}
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}
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