A hack to distinguish if..else from else: in case.

The old BIRD grammar needs two lookaheads to distinguish if..else from
else: in case, which caused the parser to fail on some combinations of
both expressions.

This patch replaces two tokens 'else' ':' by one token 'else:' to fix
that.

2 files changed, 9 insertions, 8 deletions

diff --git a/filter/config.Y b/filter/config.Y
index 8ff2046..b9aa67f 100644
--- a/filter/config.Y
+++ b/filter/config.Y
@@ -305,11 +305,11 @@ switch_body: /* EMPTY */ { $$ = NULL; }
      $$->data = $4;
      $$->left = $1;
    }
- | switch_body ELSE ':' cmds {
+ | switch_body ELSECOL cmds {
      $$ = f_new_tree(); 
      $$->from.type = T_VOID; 
      $$->to.type = T_VOID;
-     $$->data = $4;
+     $$->data = $3;
      $$->left = $1;
    }
  ;
diff --git a/filter/test.conf b/filter/test.conf
index 40fff19..6d7a708 100644
--- a/filter/test.conf
+++ b/filter/test.conf
@@ -27,14 +27,15 @@ int local1;
 int local2;
 int i;
 {
-	printn "Function callme called arguments ", arg1, " and ", arg2, ":" ;
+	printn "Function callme called arguments ", arg1, " and ", arg2, ": " ;
 	i = arg2;
 
 	case arg1 {
-	2: print "dva"; print "jeste jednou dva";
-	3 .. 5: print "tri az pet";
-	else: print "neco jineho";
-	}	
+	2: printn "dva, "; printn "jeste jednou dva";
+	3 .. 5: if arg2 < 3 then printn "tri az pet";
+	else: printn "neco jineho";
+	}
+	print;
 }
 
 function fifteen()
@@ -247,7 +248,7 @@ string s;
 	callme ( 2, 2 );
 	callme ( 2, 2 );
 	callme ( 3, 2 );
-	callme ( 4, 2 );
+	callme ( 4, 4 );
 	callme ( 7, 2 );
 
 	i = fifteen();