diff tests/agcl/parsifal/factor.syn @ 0:13d2b8934445

Import AnaGram (near-)release tree into Mercurial.
author David A. Holland
date Sat, 22 Dec 2007 17:52:45 -0500
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/agcl/parsifal/factor.syn	Sat Dec 22 17:52:45 2007 -0500
@@ -0,0 +1,40 @@
+/*
+ * AnaGram, A System for Syntax Directed Programming
+ * Copyright 1993-2002 Parsifal Software. All Rights Reserved.
+ * See the file COPYING for license and usage terms.
+ */
+
+ factor $
+   -> "if", '(', true logical or exp, ',',
+               conditional exp:x, ',',
+               skip, ')'               =x;
+
+ factor
+   -> "if", '(', false logical or exp, ',',
+               skip, ',',
+               conditional exp:y, ')'               =y;
+
+false logical or exp, true logical or exp
+ -> logical or exp:c        ={if (c) CHANGE_REDUCTION("true_logical_or_exp");}
+
+
+skip
+ -> skip char...
+
+skip char
+ -> ~(eof + '(' + ')' + ',' + space)
+ -> balanced parens
+
+balanced parens
+ -> '(', [~(eof + '(' + ')') | balanced parens]..., ')'
+
+white space
+ -> space
+ -> comment
+
+[
+  disregard white space
+  lexeme {skip char}
+]
+
+