1 files changed, 98 insertions, 0 deletions
diff --git a/wlp_yacc.py b/wlp_yacc.py
new file mode 100644
index 0000000..a16f530
--- /dev/null
+++ b/wlp_yacc.py
@@ -0,0 +1,98 @@
+import logging
+
+import rply
+
+logging.basicConfig(format='%(levelname)s:%(funcName)s:%(message)s',
+                    level=logging.DEBUG)
+
+pg = rply.ParserGenerator(['OWNER', 'VAL', 'VAR'],
+                          cache_id='wlp_parser')
+
+"""
+    $accept ::= block $end
+
+    block ::= blockstatement
+         | block blockstatement
+
+    blockstatement ::= owner '{' commandline '}'
+
+    commandline ::= command
+               | commandline command
+
+    command ::= varpart '=' valpart
+
+    owner ::= OWNERID
+
+    varpart ::= VARID
+
+    valpart ::= VALID
+"""
+
+## Makes from this source
+##
+## <kame@innocent.com> {
+## 	From: = 'ME' Sender: = "Cosimo" Reply-to = "me"
+## }
+##
+## <alfarano@students.cs.unibo.it> {
+## 	From: = 'Cosimo Alfarano'
+## 	X-Firstname: = 'Cosimo'
+## }
+##
+## <kame@innocent.com> {
+## 	From: = 'kame@inwind.it'
+## 	Reply-to: = "KA"
+## 	Sender: = "Kalfa"
+## }
+##
+## this dictionary
+##
+##  expected_dict = {'alfarano@students.cs.unibo.it': {
+##      'From:': 'Cosimo Alfarano',
+##      'X-Firstname:': 'Cosimo'
+##  },
+##      'kame@innocent.com': {
+##      'From:': 'kame@inwind.it',
+##      'Reply-to': 'me',
+##      'Reply-to:': 'KA',
+##      'Sender:': 'Kalfa'}
+##  }
+
+
+@pg.production('main : block')
+def main(p):
+    return p[0]
+
+
+# block:
+#     blockstatement
+#     | block  blockstatement
+@pg.production('block : blockstatement')
+@pg.production('block : block blockstatement')
+def block(p):
+    logging.debug('block p = %s', p)
+
+
+# blockstatement:
+#     owner '{' commandline '}'
+@pg.production('blockstatement : OWNER commandline')
+def blockstatement(p):
+    logging.debug('blockstatement p = %s', p)
+
+
+# commandline:
+#     command | commandline command
+@pg.production('commandline : command')
+@pg.production('commandline : commandline command')
+def commandline(p):
+    logging.debug('commandline p = %s', p)
+
+
+# command:
+#     varpart '=' valpart { found(left,right,owner); }
+@pg.production('command : VAR VAL')
+def command(p):
+    logging.debug('command p = %s', p)
+    return (p[0], p[1])
+
+parser = pg.build()