Add list expressions to grammar/ast.

src/parser/ast.yaml

@@ -291,6 +291,9 @@ Class:
     - class_level_declarations:
         rule: ClassLevelDeclaration
         vec: true
+    - end_kw:
+        rule: End
+        skip: true
 
 # Function constructs
 Function:
@@ -604,6 +607,9 @@ Expression:
       - Closure:
           inner:
             kind: Closure
+      - List:
+          inner:
+            kind: ListExpression
     build:
       kind: TernaryExpression
 TernaryExpression:
@@ -888,9 +894,15 @@ PrimaryExpression:
       - Closure:
           wrap:
             enum_variant: Closure
+      - ListExpression:
+          wrap:
+            enum_variant: List
       - ParenthesizedExpression:
           return_build:
             kind: Expression
+ListExpression:
+  children:
+    - expression_list
 ParenthesizedExpression:
   children:
     - expression

src/parser/deimos.pest

@@ -726,9 +726,16 @@ PrimaryExpression = {
       Literal
     | FullyQualifiedName
     | Closure
+    | ListExpression
     | ParenthesizedExpression
 }
 
+ListExpression = {
+      "["
+    ~ ExpressionList?
+    ~ "]"
+}
+
 ParenthesizedExpression = {
       "("
     ~ Expression