From 5bae7e56ef0990312a7becf8280b2f06899db6ad Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jakub=20=C5=BD=C3=A1dn=C3=ADk?= <kubouch@gmail.com>
Date: Wed, 8 Jun 2022 21:31:36 +0300
Subject: [PATCH] Add `$nu.scope.engine_state` (#5739)

* Add number of items present in engine state

* Rename num_decls column to num_commands
---
 crates/nu-engine/src/eval.rs | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/crates/nu-engine/src/eval.rs b/crates/nu-engine/src/eval.rs
index 0469f30434..e7df663ceb 100644
--- a/crates/nu-engine/src/eval.rs
+++ b/crates/nu-engine/src/eval.rs
@@ -1174,6 +1174,40 @@ pub fn create_scope(
         span,
     });
 
+    let engine_state_cols = vec![
+        "source_bytes".to_string(),
+        "num_vars".to_string(),
+        "num_commands".to_string(),
+        "num_aliases".to_string(),
+        "num_blocks".to_string(),
+        "num_modules".to_string(),
+        "num_env_vars".to_string(),
+    ];
+
+    let engine_state_vals = vec![
+        Value::int(engine_state.next_span_start() as i64, span),
+        Value::int(engine_state.num_vars() as i64, span),
+        Value::int(engine_state.num_decls() as i64, span),
+        Value::int(engine_state.num_aliases() as i64, span),
+        Value::int(engine_state.num_blocks() as i64, span),
+        Value::int(engine_state.num_modules() as i64, span),
+        Value::int(
+            engine_state
+                .env_vars
+                .values()
+                .map(|overlay| overlay.len() as i64)
+                .sum(),
+            span,
+        ),
+    ];
+
+    output_cols.push("engine_state".to_string());
+    output_vals.push(Value::Record {
+        cols: engine_state_cols,
+        vals: engine_state_vals,
+        span,
+    });
+
     Ok(Value::Record {
         cols: output_cols,
         vals: output_vals,