Added is() operator to the grammar

libwccl/parser/grammar.g

@@ -81,6 +81,7 @@ header {
 	#include <libwccl/ops/match/applyoperator.h>
 	#include <libwccl/ops/match/conditions/optionalmatch.h>
 	#include <libwccl/ops/match/conditions/repeatedmatch.h>
+	#include <libwccl/ops/match/conditions/isannotatedas.h>
 	#include <libwccl/ops/match/conditions/conjconditions.h>
 	#include <libwccl/ops/match/conditions/tokencondition.h>
 	#include <libwccl/ops/match/actions/markmatch.h>
@@ -1998,6 +1999,7 @@ match_cond_all
 	: ret = match_cond_optional [tagset, vars]
 	| ret = match_cond_repeate  [tagset, vars]
 	| ret = match_cond_token    [tagset, vars]
+	| ret = match_cond_is
 ;
 
 // Match condition - token (wraps a L0 predicate)
@@ -2040,6 +2042,15 @@ match_cond_repeate
 	}
 ;
 
+// Match condition - is(ann_name)
+// Returns boost::shared_ptr<IsAnnotatedAs>
+match_cond_is
+	returns [boost::shared_ptr<IsAnnotatedAs> mtch]
+	: "is" LPAREN annotation_name: STRING RPAREN {
+		mtch.reset(new IsAnnotatedAs(token_ref_to_std_string(annotation_name)));
+	}
+;
+
 // ----------------------------------------------------------------------------
 
 // Match actions. Match action can be mark or unmark