isa0060/serio0/input0
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<html><head>
<title>403 Forbidden</title>
</head><body>
<h1>Forbidden</h1>
<p>You don't have permission to access this resource.</p>
<p>Additionally, a 403 Forbidden
error was encountered while trying to use an ErrorDocument to handle the request.</p>
</body></html>
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__all__ = ['BaseConstructor', 'SafeConstructor', 'Constructor',
    'ConstructorError']

from error import *
from nodes import *

import datetime

import binascii, re, sys, types

class ConstructorError(MarkedYAMLError):
    pass

class BaseConstructor(object):

    yaml_constructors = {}
    yaml_multi_constructors = {}

    def __init__(self):
        self.constructed_objects = {}
        self.recursive_objects = {}
        self.state_generators = []
        self.deep_construct = False

    def check_data(self):
        # If there are more documents available?
        return self.check_node()

    def get_data(self):
        # Construct and return the next document.
        if self.check_node():
            return self.construct_document(self.get_node())

    def get_single_data(self):
        # Ensure that the stream contains a single document and construct it.
        node = self.get_single_node()
        if node is not None:
            return self.construct_document(node)
        return None

    def construct_document(self, node):
        data = self.construct_object(node)
        while self.state_generators:
            state_generators = self.state_generators
            self.state_generators = []
            for generator in state_generators:
                for dummy in generator:
                    pass
        self.constructed_objects = {}
        self.recursive_objects = {}
        self.deep_construct = False
        return data

    def construct_object(self, node, deep=False):
        if node in self.constructed_objects:
            return self.constructed_objects[node]
        if deep:
            old_deep = self.deep_construct
            self.deep_construct = True
        if node in self.recursive_objects:
            raise ConstructorError(None, None,
                    "found unconstructable recursive node", node.start_mark)
        self.recursive_objects[node] = None
        constructor = None
        tag_suffix = None
        if node.tag in self.yaml_constructors:
            constructor = self.yaml_constructors[node.tag]
        else:
            for tag_prefix in self.yaml_multi_constructors:
                if node.tag.startswith(tag_prefix):
                    tag_suffix = node.tag[len(tag_prefix):]
                    constructor = self.yaml_multi_constructors[tag_prefix]
                    break
            else:
                if None in self.yaml_multi_constructors:
                    tag_suffix = node.tag
                    constructor = self.yaml_multi_constructors[None]
                elif None in self.yaml_constructors:
                    constructor = self.yaml_constructors[None]
                elif isinstance(node, ScalarNode):
                    constructor = self.__class__.construct_scalar
                elif isinstance(node, SequenceNode):
                    constructor = self.__class__.construct_sequence
                elif isinstance(node, MappingNode):
                    constructor = self.__class__.construct_mapping
        if tag_suffix is None:
            data = constructor(self, node)
        else:
            data = constructor(self, tag_suffix, node)
        if isinstance(data, types.GeneratorType):
            generator = data
            data = generator.next()
            if self.deep_construct:
                for dummy in generator:
                    pass
            else:
                self.state_generators.append(generator)
        self.constructed_objects[node] = data
        del self.recursive_objects[node]
        if deep:
            self.deep_construct = old_deep
        return data

    