Revert plugins.

src/fn_native.rs

@@ -1,7 +1,6 @@
 use crate::any::Dynamic;
 use crate::engine::Engine;
 use crate::parser::ScriptFnDef;
-use crate::plugin::PluginFunction;
 use crate::result::EvalAltResult;
 
 use crate::stdlib::{boxed::Box, fmt, rc::Rc, sync::Arc};
@@ -60,11 +59,6 @@ pub type FnAny =
 
 pub type IteratorFn = fn(Dynamic) -> Box<dyn Iterator<Item = Dynamic>>;
 
-#[cfg(feature = "sync")]
-pub type SharedPluginFunction = Arc<dyn PluginFunction + Send + Sync>;
-#[cfg(not(feature = "sync"))]
-pub type SharedPluginFunction = Rc<dyn PluginFunction>;
-
 #[cfg(not(feature = "sync"))]
 pub type Callback<T, R> = Box<dyn Fn(&T) -> R + 'static>;
 #[cfg(feature = "sync")]
@@ -80,8 +74,6 @@ pub enum CallableFunction {
     Method(Shared<FnAny>),
     /// An iterator function.
     Iterator(IteratorFn),
-    /// A plugin-defined function,
-    Plugin(SharedPluginFunction),
     /// A script-defined function.
     Script(Shared<ScriptFnDef>),
 }
@@ -92,7 +84,6 @@ impl fmt::Debug for CallableFunction {
             Self::Pure(_) => write!(f, "NativePureFunction"),
             Self::Method(_) => write!(f, "NativeMethod"),
             Self::Iterator(_) => write!(f, "NativeIterator"),
-            Self::Plugin(_) => write!(f, "PluginFunction"),
             Self::Script(fn_def) => fmt::Debug::fmt(fn_def, f),
         }
     }
@@ -104,7 +95,6 @@ impl CallableFunction {
         match self {
             Self::Pure(_) => true,
             Self::Method(_) | Self::Iterator(_) | Self::Script(_) => false,
-            Self::Plugin(_) => false,
         }
     }
     /// Is this a pure native Rust method-call?
@@ -112,7 +102,6 @@ impl CallableFunction {
         match self {
             Self::Method(_) => true,
             Self::Pure(_) | Self::Iterator(_) | Self::Script(_) => false,
-            Self::Plugin(_) => false,
         }
     }
     /// Is this an iterator function?
@@ -120,7 +109,6 @@ impl CallableFunction {
         match self {
             Self::Iterator(_) => true,
             Self::Pure(_) | Self::Method(_) | Self::Script(_) => false,
-            Self::Plugin(_) => false,
         }
     }
     /// Is this a Rhai-scripted function?
@@ -128,14 +116,6 @@ impl CallableFunction {
         match self {
             Self::Script(_) => true,
             Self::Pure(_) | Self::Method(_) | Self::Iterator(_) => false,
-            Self::Plugin(_) => false,
-        }
-    }
-    /// Is this a plugin-defined function?
-    pub fn is_plugin_fn(&self) -> bool {
-        match self {
-            Self::Plugin(_) => true,
-            Self::Pure(_) | Self::Method(_) | Self::Iterator(_) | Self::Script(_) => false,
         }
     }
     /// Get a reference to a native Rust function.
@@ -147,7 +127,6 @@ impl CallableFunction {
         match self {
             Self::Pure(f) | Self::Method(f) => f.as_ref(),
             Self::Iterator(_) | Self::Script(_) => panic!(),
-            Self::Plugin(_) => panic!(),
         }
     }
     /// Get a shared reference to a script-defined function definition.
@@ -157,7 +136,7 @@ impl CallableFunction {
     /// Panics if the `CallableFunction` is not `Script`.
     pub fn get_shared_fn_def(&self) -> Shared<ScriptFnDef> {
         match self {
-            Self::Pure(_) | Self::Method(_) | Self::Plugin(_) | Self::Iterator(_) => panic!(),
+            Self::Pure(_) | Self::Method(_) | Self::Iterator(_) => panic!(),
             Self::Script(f) => f.clone(),
         }
     }
@@ -170,7 +149,6 @@ impl CallableFunction {
         match self {
             Self::Pure(_) | Self::Method(_) | Self::Iterator(_) => panic!(),
             Self::Script(f) => f,
-            Self::Plugin(_) => panic!(),
         }
     }
     /// Get a reference to an iterator function.
@@ -182,18 +160,6 @@ impl CallableFunction {
         match self {
             Self::Iterator(f) => *f,
             Self::Pure(_) | Self::Method(_) | Self::Script(_) => panic!(),
-            Self::Plugin(_) => panic!(),
-        }
-    }
-    /// Get a reference to a plugin function.
-    ///
-    /// # Panics
-    ///
-    /// Panics if the `CallableFunction` is not `Plugin`.
-    pub fn get_plugin_fn<'s>(&'s self) -> SharedPluginFunction {
-        match self {
-            Self::Plugin(f) => f.clone(),
-            Self::Pure(_) | Self::Method(_) | Self::Script(_) | Self::Iterator(_) => panic!(),
         }
     }
     /// Create a new `CallableFunction::Pure`.
@@ -204,18 +170,6 @@ impl CallableFunction {
     pub fn from_method(func: Box<FnAny>) -> Self {
         Self::Method(func.into())
     }
-
-    #[cfg(feature = "sync")]
-    /// Create a new `CallableFunction::Plugin`.
-    pub fn from_plugin(plugin: impl PluginFunction + 'static + Send + Sync) -> Self {
-        Self::Plugin(Arc::new(plugin))
-    }
-
-    #[cfg(not(feature = "sync"))]
-    /// Create a new `CallableFunction::Plugin`.
-    pub fn from_plugin(plugin: impl PluginFunction + 'static) -> Self {
-        Self::Plugin(Rc::new(plugin))
-    }
 }
 
 impl From<IteratorFn> for CallableFunction {