Plugin with evaluated call (#393)

* plugin trait

* impl of trait

* record and absolute path

* plugin example crate

* clippy error

* correcting cargo

* evaluated call for plugin

crates/nu_plugin_inc/src/inc.rs

@@ -1,5 +1,4 @@
-use nu_plugin::plugin::PluginError;
-use nu_protocol::{Span, Value};
+use nu_protocol::{ShellError, Span, Value};
 
 #[derive(Debug, Eq, PartialEq)]
 pub enum Action {
@@ -82,14 +81,14 @@ impl Inc {
         "Usage: inc field [--major|--minor|--patch]"
     }
 
-    pub fn inc(&self, value: &Value) -> Result<Value, PluginError> {
+    pub fn inc(&self, value: &Value) -> Result<Value, ShellError> {
         match value {
             Value::Int { val, span } => Ok(Value::Int {
                 val: val + 1,
                 span: *span,
             }),
             Value::String { val, .. } => Ok(self.apply(val)),
-            _ => Err(PluginError::RunTimeError("incrementable value".to_string())),
+            _ => Err(ShellError::InternalError("incrementable value".to_string())),
         }
     }
 }

crates/nu_plugin_inc/src/nu/mod.rs

@@ -1,8 +1,7 @@
 use crate::inc::SemVerAction;
 use crate::Inc;
-use nu_plugin::{plugin::PluginError, Plugin};
-use nu_protocol::ast::Call;
-use nu_protocol::{Signature, Span, Value};
+use nu_plugin::{EvaluatedCall, Plugin};
+use nu_protocol::{ShellError, Signature, Span, Value};
 
 impl Plugin for Inc {
     fn signature(&self) -> Vec<Signature> {
@@ -25,7 +24,12 @@ impl Plugin for Inc {
             )]
     }
 
-    fn run(&mut self, name: &str, call: &Call, input: &Value) -> Result<Value, PluginError> {
+    fn run(
+        &mut self,
+        name: &str,
+        call: &EvaluatedCall,
+        input: &Value,
+    ) -> Result<Value, ShellError> {
         if name != "inc" {
             return Ok(Value::Nothing {
                 span: Span::unknown(),