From 58f2f19c9840dd42a78b2b724a39f72cc59646cf Mon Sep 17 00:00:00 2001
From: Holger Hans Peter Freyther <zecke@selfish.org>
Date: Tue, 23 Nov 2010 23:48:52 +0100
Subject: [PATCH] GSM48Classmark1: Implement parsing the classmark

---
 GSM48.st | 12 ++++++++++++
 Tests.st |  4 ++++
 2 files changed, 16 insertions(+)

diff --git a/GSM48.st b/GSM48.st
index 7a2811c..6f92fc8 100644
--- a/GSM48.st
+++ b/GSM48.st
@@ -89,7 +89,19 @@ Object subclass: GSM48Classmark1 [
             yourself
     ]
 
+    GSM48Classmark1 class >> length: aByteArray [
+        ^ 1
+    ]
+
+    GSM48Classmark1 class >> parseFrom: aByteArray [
+        ^ (self new)
+            cm1: (aByteArray at: 1);
+            yourself
+    ]
+
     cm1: aCm [ <category: 'creation'> cm1 := aCm ]
+    cm1 [ ^ cm1 ]
+
     writeOnDirect: aMsg [
         <category: 'creation'>
         aMsg putByte: cm1.
diff --git a/Tests.st b/Tests.st
index bead9cb..260383c 100644
--- a/Tests.st
+++ b/Tests.st
@@ -140,6 +140,10 @@ TestCase subclass: GSM48Test [
         gsm writeOnDirect: msg.
 
         self assert: msg asByteArray = res.
+
+        self assert: (GSM48Classmark1 length: res) = res size.
+        gsm := GSM48Classmark1 parseFrom: res.
+        self assert: gsm cm1 = 16r33.
     ]
 
     testMI [