1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
|
from __future__ import absolute_import
__all__ = ['Serializer', 'SerializerError']
import re
try:
from .error import YAMLError
from .events import * # NOQA
from .nodes import * # NOQA
from .compat import nprint, DBG_NODE, dbg
except (ImportError, ValueError): # for Jython
from ruamel.yaml.error import YAMLError
from ruamel.yaml.events import * # NOQA
from ruamel.yaml.nodes import * # NOQA
from ruamel.yaml.compat import nprint, DBG_NODE, dbg
class SerializerError(YAMLError):
pass
class Serializer(object):
# 'id' and 3+ numbers, but not 000
ANCHOR_TEMPLATE = u'id%03d'
ANCHOR_RE = re.compile(u'id(?!000$)\\d{3,}')
def __init__(self, encoding=None, explicit_start=None, explicit_end=None,
version=None, tags=None):
self.use_encoding = encoding
self.use_explicit_start = explicit_start
self.use_explicit_end = explicit_end
self.use_version = version
self.use_tags = tags
self.serialized_nodes = {}
self.anchors = {}
self.last_anchor_id = 0
self.closed = None
self._templated_id = None
def open(self):
if self.closed is None:
self.emit(StreamStartEvent(encoding=self.use_encoding))
self.closed = False
elif self.closed:
raise SerializerError("serializer is closed")
else:
raise SerializerError("serializer is already opened")
def close(self):
if self.closed is None:
raise SerializerError("serializer is not opened")
elif not self.closed:
self.emit(StreamEndEvent())
self.closed = True
# def __del__(self):
# self.close()
def serialize(self, node):
if dbg(DBG_NODE):
nprint('Serializing nodes')
node.dump()
if self.closed is None:
raise SerializerError("serializer is not opened")
elif self.closed:
raise SerializerError("serializer is closed")
self.emit(DocumentStartEvent(explicit=self.use_explicit_start,
version=self.use_version,
tags=self.use_tags))
self.anchor_node(node)
self.serialize_node(node, None, None)
self.emit(DocumentEndEvent(explicit=self.use_explicit_end))
self.serialized_nodes = {}
self.anchors = {}
self.last_anchor_id = 0
def anchor_node(self, node):
if node in self.anchors:
if self.anchors[node] is None:
self.anchors[node] = self.generate_anchor(node)
else:
anchor = None
try:
if node.anchor.always_dump:
anchor = node.anchor.value
except:
pass
self.anchors[node] = anchor
if isinstance(node, SequenceNode):
for item in node.value:
self.anchor_node(item)
elif isinstance(node, MappingNode):
for key, value in node.value:
self.anchor_node(key)
self.anchor_node(value)
def generate_anchor(self, node):
try:
anchor = node.anchor.value
except:
anchor = None
if anchor is None:
self.last_anchor_id += 1
return self.ANCHOR_TEMPLATE % self.last_anchor_id
return anchor
def serialize_node(self, node, parent, index):
alias = self.anchors[node]
if node in self.serialized_nodes:
self.emit(AliasEvent(alias))
else:
self.serialized_nodes[node] = True
self.descend_resolver(parent, index)
if isinstance(node, ScalarNode):
detected_tag = self.resolve(ScalarNode, node.value,
(True, False))
default_tag = self.resolve(ScalarNode, node.value,
(False, True))
implicit = \
(node.tag == detected_tag), (node.tag == default_tag)
self.emit(ScalarEvent(alias, node.tag, implicit, node.value,
style=node.style, comment=node.comment))
elif isinstance(node, SequenceNode):
implicit = (node.tag
== self.resolve(SequenceNode, node.value, True))
comment = node.comment
# print('comment >>>>>>>>>>>>>.', comment, node.flow_style)
end_comment = None
seq_comment = None
if node.flow_style is True:
if comment: # eol comment on flow style sequence
seq_comment = comment[0]
# comment[0] = None
if comment and len(comment) > 2:
end_comment = comment[2]
else:
end_comment = None
self.emit(SequenceStartEvent(alias, node.tag, implicit,
flow_style=node.flow_style,
comment=node.comment))
index = 0
for item in node.value:
self.serialize_node(item, node, index)
index += 1
self.emit(SequenceEndEvent(comment=[seq_comment, end_comment]))
elif isinstance(node, MappingNode):
implicit = (node.tag
== self.resolve(MappingNode, node.value, True))
comment = node.comment
end_comment = None
map_comment = None
if node.flow_style is True:
if comment: # eol comment on flow style sequence
map_comment = comment[0]
# comment[0] = None
if comment and len(comment) > 2:
end_comment = comment[2]
self.emit(MappingStartEvent(alias, node.tag, implicit,
flow_style=node.flow_style,
comment=node.comment))
for key, value in node.value:
self.serialize_node(key, node, None)
self.serialize_node(value, node, key)
self.emit(MappingEndEvent(comment=[map_comment, end_comment]))
self.ascend_resolver()
def templated_id(s):
return Serializer.ANCHOR_RE.match(s)
|
