1 files changed, 73 insertions, 0 deletions
diff --git a/bin/pychart/chart_object.py b/bin/pychart/chart_object.py
new file mode 100644
index 00000000000..f23fbadd0c0
--- /dev/null
+++ b/bin/pychart/chart_object.py
@@ -0,0 +1,73 @@
+#
+# Copyright (C) 2000-2005 by Yasushi Saito (yasushi.saito@gmail.com)
+# 
+# Jockey is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the
+# Free Software Foundation; either version 2, or (at your option) any
+# later version.
+#
+# Jockey is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+# for more details.
+#
+import pychart_types
+import types
+
+def _check_attr_types(obj, keys):
+    for attr in obj.__dict__.keys():
+        if not keys.has_key(attr):
+            raise Exception, "%s: unknown attribute '%s'" % (obj, attr)
+        
+        typeval, default_value, docstring = keys[attr][0:3]
+        val = getattr(obj, attr)
+        if val == None or typeval == pychart_types.AnyType:
+            pass
+        elif isinstance(typeval, types.FunctionType):
+            # user-defined check procedure
+            error = apply(typeval, (val,))
+            if error != None:
+                raise Exception, "%s: %s for attribute '%s', but got '%s'" % (obj, error, attr, val)
+        elif 1:
+            try:
+                if isinstance(val, typeval):
+                    pass
+            except:
+                raise Exception, "%s: Expecting type %s, but got %s (attr=%s, %s)"  % (obj, typeval, val, attr, keys[attr])
+
+        else:
+            raise Exception, "%s: attribute '%s' expects type %s but found %s" % (obj, attr, typeval, val)
+
+def set_defaults(cls, **dict):
+    validAttrs = getattr(cls, "keys")
+    for attr, val in dict.items():
+        if not validAttrs.has_key(attr):
+            raise Exception, "%s: unknown attribute %s." % (cls, attr)
+        tuple = list(validAttrs[attr])
+        # 0 : type
+        # 1: defaultValue
+        # 2: document
+        # 3: defaultValue document (optional)
+        tuple[1] = val
+        validAttrs[attr] = tuple
+        
+class T(object):
+    def init(self, args):
+        keys = self.keys
+        for attr, tuple in keys.items():
+            defaultVal = tuple[1]
+            if isinstance(defaultVal, types.FunctionType):
+                # if the value is procedure, use the result of the proc call
+                # as the default value
+                defaultVal = apply(defaultVal, ())
+            setattr(self, attr, defaultVal)
+            
+        for key, val in args.items():
+            setattr(self, key, val)
+        _check_attr_types(self, keys)
+        
+    def __init__(self, **args):
+        self.init(args)
+
+    def type_check(self):
+        _check_attr_types(self, self.keys)