From 8b66b80ff28c28ee36ce43c96db94721557785fc Mon Sep 17 00:00:00 2001
From: Sebastian Harl <sh@tokkee.org>
Date: Tue, 21 Oct 2014 07:45:31 +0200
Subject: [PATCH] frontend/grammar: Added support for the IN operator.

This is a matcher checking if a value is included in an array. It's mostly
meant to be used to match backends at the moment.
---
 src/frontend/grammar.y | 10 +++++++++-
 src/frontend/scanner.l |  1 +
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/frontend/grammar.y b/src/frontend/grammar.y
index 78b45d2..23ba07f 100644
--- a/src/frontend/grammar.y
+++ b/src/frontend/grammar.y
@@ -92,7 +92,7 @@ sdb_fe_yyerror(YYLTYPE *lval, sdb_fe_yyscan_t scanner, const char *msg);
 
 %token AND OR IS NOT MATCHING FILTER
 %token CMP_EQUAL CMP_NEQUAL CMP_REGEX CMP_NREGEX
-%token CMP_LT CMP_LE CMP_GE CMP_GT
+%token CMP_LT CMP_LE CMP_GE CMP_GT IN
 %token CONCAT
 
 %token START END
@@ -115,6 +115,7 @@ sdb_fe_yyerror(YYLTYPE *lval, sdb_fe_yyscan_t scanner, const char *msg);
 %left CMP_EQUAL CMP_NEQUAL
 %left CMP_LT CMP_LE CMP_GE CMP_GT
 %nonassoc CMP_REGEX CMP_NREGEX
+%nonassoc IN
 %left CONCAT
 %nonassoc IS
 %left '+' '-'
@@ -469,6 +470,13 @@ compare_matcher:
 			$$ = sdb_store_isnnull_matcher($1);
 			sdb_object_deref(SDB_OBJ($1));
 		}
+	|
+	expression IN expression
+		{
+			$$ = sdb_store_in_matcher($1, $3);
+			sdb_object_deref(SDB_OBJ($1));
+			sdb_object_deref(SDB_OBJ($3));
+		}
 	;
 
 expression:
diff --git a/src/frontend/scanner.l b/src/frontend/scanner.l
index 9d8e73d..33b762c 100644
--- a/src/frontend/scanner.l
+++ b/src/frontend/scanner.l
@@ -55,6 +55,7 @@ static struct {
 	{ "END",        END },
 	{ "FETCH",      FETCH },
 	{ "FILTER",     FILTER },
+	{ "IN",         IN },
 	{ "IS",         IS },
 	{ "LIST",       LIST },
 	{ "LOOKUP",     LOOKUP },
-- 
2.30.2