lang: add pipelines and rename parser to lst_parser

crates/lang/src/lst_parser/grammar/expression/collection.rs

@@ -0,0 +1,25 @@
+use enumset::enum_set;
+
+use crate::lst_parser::{
+    syntax_kind::{SyntaxKind::*, TokenSet},
+    CompletedMarker, Parser,
+};
+
+use self::{attr_set::attr_set, vec::vec_matrix_list};
+
+mod attr_set;
+mod vec;
+
+const COLLECTION_START: TokenSet = enum_set!(L_BRACK | L_BRACE);
+
+pub fn collection(p: &mut Parser) -> Option<CompletedMarker> {
+    if !COLLECTION_START.contains(p.current()) {
+        return None;
+    }
+
+    Some(match p.current() {
+        L_BRACK => vec_matrix_list(p),
+        L_BRACE => attr_set(p),
+        _ => unreachable!(),
+    })
+}