From f55fe02ea3bdf7b064bd5314c740495a95174a98 Mon Sep 17 00:00:00 2001
From: Walter Bender <walter@walter-laptop.(none)>
Date: Mon, 22 Dec 2008 20:01:24 +0000
Subject: UCB logo export

Image cache check
---
(limited to 'talogo.py')

diff --git a/talogo.py b/talogo.py
index c3e6c14..77a772a 100644
--- a/talogo.py
+++ b/talogo.py
@@ -45,7 +45,6 @@ class logoerror(Exception):
     def __str__(self):
         return repr(self.value)
 
-
 def run_blocks(lc, spr, blocks):
     lc.stacks['stack1'] = None
     lc.stacks['stack2'] = None
@@ -56,6 +55,16 @@ def run_blocks(lc, spr, blocks):
     print code
     setup_cmd(lc, code)
 
+# walk through the blocks, but don't execute them
+# used by save Logo code
+def walk_blocks(lc, spr, blocks):
+    lc.stacks['stack1'] = None
+    lc.stacks['stack2'] = None
+    for i in blocks:
+        if i.proto.name=='hat1': lc.stacks['stack1']= readline(lc,blocks_to_code(i))
+        if i.proto.name=='hat2': lc.stacks['stack2']= readline(lc,blocks_to_code(i))
+    return blocks_to_code(spr)
+
 def blocks_to_code(spr):
     if spr==None: return ['%nothing%']
     code = []
@@ -311,6 +320,8 @@ def lcNew(tw):
 
     defprim(lc,'define', 2, prim_define)
     defprim(lc,'nop', 0, lambda lc: None)
+    defprim(lc,'nop1', 0, lambda lc: None)
+    defprim(lc,'nop2', 0, lambda lc: None)
     defprim(lc,'start', 0, lambda: None)
 
     lc.symtype = type(intern(lc, 'print'))
--
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