From 9109b3cc8cca05f34d3ddee062cf7f8bc401af31 Mon Sep 17 00:00:00 2001
From: Aldo Cortesi <aldo@nullcube.com>
Date: Sat, 2 May 2015 16:17:00 +1200
Subject: Massive refactoring to split up language implementation.

---
 libpathod/language/websockets.py | 59 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 59 insertions(+)
 create mode 100644 libpathod/language/websockets.py

(limited to 'libpathod/language/websockets.py')

diff --git a/libpathod/language/websockets.py b/libpathod/language/websockets.py
new file mode 100644
index 00000000..29b7311c
--- /dev/null
+++ b/libpathod/language/websockets.py
@@ -0,0 +1,59 @@
+
+import netlib.websockets
+import contrib.pyparsing as pp
+from . import base, generators
+
+
+class WebsocketFrame(base._Message):
+    comps = (
+        base.Body,
+        base.PauseAt,
+        base.DisconnectAt,
+        base.InjectAt
+    )
+    logattrs = ["body"]
+
+    @classmethod
+    def expr(klass):
+        parts = [i.expr() for i in klass.comps]
+        atom = pp.MatchFirst(parts)
+        resp = pp.And(
+            [
+                base.WF.expr(),
+                base.Sep,
+                pp.ZeroOrMore(base.Sep + atom)
+            ]
+        )
+        resp = resp.setParseAction(klass)
+        return resp
+
+    def values(self, settings):
+        vals = []
+        if self.body:
+            bodygen = self.body.value.get_generator(settings)
+            length = len(self.body.value.get_generator(settings))
+        else:
+            bodygen = None
+            length = 0
+        frame = netlib.websockets.FrameHeader(
+            mask = True,
+            payload_length = length
+        )
+        vals = [frame.to_bytes()]
+        if self.body:
+            masker = netlib.websockets.Masker(frame.masking_key)
+            vals.append(
+                generators.TransformGenerator(
+                    bodygen,
+                    masker.mask
+                )
+            )
+        return vals
+
+    def resolve(self, settings, msg=None):
+        return self.__class__(
+            [i.resolve(settings, msg) for i in self.tokens]
+        )
+
+    def spec(self):
+        return ":".join([i.spec() for i in self.tokens])
-- 
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