RFC 110: Add "inherit-as-list" language construct

Initial MVP implementation for [RFC 110](NixOS/rfcs#110)
r-burns · Oct 18, 2021 · bfbd3dc · bfbd3dc
1 parent 663f0a1
commit bfbd3dc
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/src/libexpr/parser.y b/src/libexpr/parser.y
@@ -343,6 +343,15 @@ expr_function
         });
       $$ = new ExprLet($2, $4);
     }
+  | INHERIT '(' expr ')' '[' attrs ']'
+    { auto ret = new ExprList;
+      ret->elems.reserve($6->size());
+      /* !!! Should ensure sharing of the expression in $3. */
+      for (auto & i : *$6) {
+          ret->elems.push_back(new ExprSelect(makeCurPos(@6, data), $3, i.symbol));
+      }
+      $$ = ret;
+    }
   | expr_if
   ;