43 lines
905 B
Python
43 lines
905 B
Python
import collections
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from .lists import unique
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class Result(object):
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def __init__(self, value, messages):
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self.value = value
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self.messages = unique(messages)
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def map(self, func):
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return Result(func(self.value), self.messages)
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def bind(self, func):
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result = func(self.value)
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return Result(result.value, self.messages + result.messages)
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Message = collections.namedtuple("Message", ["type", "message"])
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def warning(message):
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return Message("warning", message)
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def success(value):
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return Result(value, [])
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def combine(results):
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values = []
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messages = []
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for result in results:
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values.append(result.value)
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for message in result.messages:
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messages.append(message)
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return Result(values, messages)
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def map(func, *args):
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return combine(args).map(lambda values: func(*values))
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