Ensuring we use Parse.Ref to support replacing/ customizing compone…

…nts of the parser
djluck · Nov 24, 2021 · f9c37ea · f9c37ea
1 parent 4b786c0
commit f9c37ea
Showing 1 changed file with 4 additions and 4 deletions.
diff --git a/src/PromQL.Parser/Parser.cs b/src/PromQL.Parser/Parser.cs
@@ -334,11 +334,11 @@ from head in OneOf(
                  Parse.Ref(() => ParenExpression).Cast<PromToken, ParenExpression, Expr>(),
                  Parse.Ref(() => AggregateExpr).Cast<PromToken, AggregateExpr, Expr>(),
                  Parse.Ref(() => FunctionCall).Cast<PromToken, FunctionCall, Expr>(),
-                 Number.Cast<PromToken, NumberLiteral, Expr>().Try(),
+                 Parse.Ref(() => Number).Cast<PromToken, NumberLiteral, Expr>().Try(),
                  Parse.Ref(() => UnaryExpr).Cast<PromToken, UnaryExpr, Expr>(),
-                 MatrixSelector.Cast<PromToken, MatrixSelector, Expr>().Try(),
-                 VectorSelector.Cast<PromToken, VectorSelector, Expr>(),
-                 StringLiteral.Cast<PromToken, StringLiteral, Expr>()
+                 Parse.Ref(() => MatrixSelector).Cast<PromToken, MatrixSelector, Expr>().Try(),
+                 Parse.Ref(() => VectorSelector).Cast<PromToken, VectorSelector, Expr>(),
+                 Parse.Ref(() => StringLiteral).Cast<PromToken, StringLiteral, Expr>()
              )
 #pragma warning disable CS8602
              from offsetOrSubquery in Parse.Ref(() => OffsetOrSubquery(head)).AsNullable().OptionalOrDefault()