Add a module command

crates/nu-command/src/default_context.rs

@@ -7,7 +7,7 @@ use nu_protocol::{
 
 use crate::{
     where_::Where, Alias, Benchmark, BuildString, Def, Do, Each, External, For, Git, GitCheckout,
-    If, Length, Let, LetEnv, Lines, ListGitBranches, Ls, Table,
+    If, Length, Let, LetEnv, Lines, ListGitBranches, Ls, Module, Table,
 };
 
 pub fn create_default_context() -> Rc<RefCell<EngineState>> {
@@ -46,6 +46,8 @@ pub fn create_default_context() -> Rc<RefCell<EngineState>> {
 
         working_set.add_decl(Box::new(Ls));
 
+        working_set.add_decl(Box::new(Module));
+
         working_set.add_decl(Box::new(Table));
 
         working_set.add_decl(Box::new(External));

crates/nu-command/src/lib.rs

@@ -16,6 +16,7 @@ mod lines;
 mod list_git_branches;
 mod ls;
 mod run_external;
+mod module;
 mod table;
 mod where_;
 
@@ -37,4 +38,5 @@ pub use lines::Lines;
 pub use list_git_branches::ListGitBranches;
 pub use ls::Ls;
 pub use run_external::External;
+pub use module::Module;
 pub use table::Table;

crates/nu-parser/src/parser.rs

@@ -2747,13 +2747,34 @@ pub fn parse_module(
 
         working_set.exit_scope();
 
-        // WIP error:
+        let block_id = working_set.add_block(block);
+
+        let block_expr = Expression {
+            expr: Expr::Block(block_id),
+            span: block_span,
+            ty: Type::Block,
+            custom_completion: None,
+        };
+
+        let module_decl_id = working_set
+            .find_decl(b"module")
+            .expect("internal error: missing module command");
+
+        let call = Box::new(Call {
+            head: spans[0],
+            decl_id: module_decl_id,
+            positional: vec![name_expr, block_expr],
+            named: vec![],
+        });
+
         (
-            garbage_statement(spans),
-            Some(ParseError::UnknownState(
-                "This is OK module".into(),
-                span(spans),
-            )),
+            Statement::Pipeline(Pipeline::from_vec(vec![Expression {
+                expr: Expr::Call(call),
+                span: span(spans),
+                ty: Type::Unknown,
+                custom_completion: None,
+            }])),
+            error,
         )
     } else {
         (