Support filters being call chained

Previously filters were not treated the same as variable, as a
result it was not possible to call the result of a filter. Since
filters are treated as regular variable and therefore can be called
any number of times, this change was necessary to allow them to be
parsed the same way.

1 files changed, 2 insertions, 7 deletions

diff --git a/grammar.ebnf b/grammar.ebnf
index 1939e5e..34b8897 100644
--- a/grammar.ebnf
+++ b/grammar.ebnf
@@ -334,13 +334,8 @@ variable_filter
     "|" {SP}* @:filter

     ;

 filter =

-    name:IDENTIFIER

-    [arguments:filter_parameters]

-    ;

-

-filter_parameters

-    =

-    "(" @:variable_accessor_call_parameters ")"

+    variable:IDENTIFIER

+    accessors:{ variable_accessor_call }*

     ;

 

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