Add support for module imports

crates/nu-protocol/src/ast/import_pattern.rs

@@ -0,0 +1,13 @@
+use crate::Span;
+
+#[derive(Debug, Clone)]
+pub enum ImportPatternMember {
+    Glob { span: Span },
+    Name { name: Vec<u8>, span: Span },
+}
+
+#[derive(Debug, Clone)]
+pub struct ImportPattern {
+    pub head: Vec<u8>,
+    pub members: Vec<ImportPatternMember>,
+}

crates/nu-protocol/src/ast/mod.rs

@@ -3,6 +3,7 @@ mod call;
 mod cell_path;
 mod expr;
 mod expression;
+mod import_pattern;
 mod operator;
 mod pipeline;
 mod statement;
@@ -12,6 +13,7 @@ pub use call::*;
 pub use cell_path::*;
 pub use expr::*;
 pub use expression::*;
+pub use import_pattern::*;
 pub use operator::*;
 pub use pipeline::*;
 pub use statement::*;