75 lines
2.6 KiB
Python
75 lines
2.6 KiB
Python
# -*- coding: utf-8 -*-
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#
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# Copyright (C) 2000-2005 by Yasushi Saito (yasushi.saito@gmail.com)
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#
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# Jockey is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by the
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# Free Software Foundation; either version 2, or (at your option) any
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# later version.
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#
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# Jockey is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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# for more details.
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#
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import pychart_types
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import types
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def _check_attr_types(obj, keys):
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for attr in obj.__dict__.keys():
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if not keys.has_key(attr):
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raise Exception, "%s: unknown attribute '%s'" % (obj, attr)
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typeval, default_value, docstring = keys[attr][0:3]
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val = getattr(obj, attr)
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if val == None or typeval == pychart_types.AnyType:
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pass
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elif isinstance(typeval, types.FunctionType):
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# user-defined check procedure
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error = apply(typeval, (val,))
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if error != None:
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raise Exception, "%s: %s for attribute '%s', but got '%s'" % (obj, error, attr, val)
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elif 1:
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try:
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if isinstance(val, typeval):
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pass
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except:
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raise Exception, "%s: Expecting type %s, but got %s (attr=%s, %s)" % (obj, typeval, val, attr, keys[attr])
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else:
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raise Exception, "%s: attribute '%s' expects type %s but found %s" % (obj, attr, typeval, val)
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def set_defaults(cls, **dict):
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validAttrs = getattr(cls, "keys")
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for attr, val in dict.items():
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if not validAttrs.has_key(attr):
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raise Exception, "%s: unknown attribute %s." % (cls, attr)
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tuple = list(validAttrs[attr])
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# 0 : type
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# 1: defaultValue
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# 2: document
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# 3: defaultValue document (optional)
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tuple[1] = val
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validAttrs[attr] = tuple
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class T(object):
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def init(self, args):
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keys = self.keys
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for attr, tuple in keys.items():
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defaultVal = tuple[1]
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if isinstance(defaultVal, types.FunctionType):
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# if the value is procedure, use the result of the proc call
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# as the default value
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defaultVal = apply(defaultVal, ())
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setattr(self, attr, defaultVal)
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for key, val in args.items():
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setattr(self, key, val)
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_check_attr_types(self, keys)
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def __init__(self, **args):
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self.init(args)
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def type_check(self):
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_check_attr_types(self, self.keys)
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