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
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
|
# -*- coding: utf-8 -*-
# Copyright (c) 2015-2017 Claudiu Popa <pcmanticore@gmail.com>
# Copyright (c) 2015 Florian Bruhin <me@the-compiler.org>
# Copyright (c) 2018 ssolanki <sushobhitsolanki@gmail.com>
# Licensed under the GPL: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
# For details: https://github.com/PyCQA/pylint/blob/master/COPYING
"""Functions to generate files readable with Georg Sander's vcg
(Visualization of Compiler Graphs).
You can download vcg at http://rw4.cs.uni-sb.de/~sander/html/gshome.html
Note that vcg exists as a debian package.
See vcg's documentation for explanation about the different values that
maybe used for the functions parameters.
"""
ATTRS_VAL = {
"algos": (
"dfs",
"tree",
"minbackward",
"left_to_right",
"right_to_left",
"top_to_bottom",
"bottom_to_top",
"maxdepth",
"maxdepthslow",
"mindepth",
"mindepthslow",
"mindegree",
"minindegree",
"minoutdegree",
"maxdegree",
"maxindegree",
"maxoutdegree",
),
"booleans": ("yes", "no"),
"colors": (
"black",
"white",
"blue",
"red",
"green",
"yellow",
"magenta",
"lightgrey",
"cyan",
"darkgrey",
"darkblue",
"darkred",
"darkgreen",
"darkyellow",
"darkmagenta",
"darkcyan",
"gold",
"lightblue",
"lightred",
"lightgreen",
"lightyellow",
"lightmagenta",
"lightcyan",
"lilac",
"turquoise",
"aquamarine",
"khaki",
"purple",
"yellowgreen",
"pink",
"orange",
"orchid",
),
"shapes": ("box", "ellipse", "rhomb", "triangle"),
"textmodes": ("center", "left_justify", "right_justify"),
"arrowstyles": ("solid", "line", "none"),
"linestyles": ("continuous", "dashed", "dotted", "invisible"),
}
# meaning of possible values:
# O -> string
# 1 -> int
# list -> value in list
GRAPH_ATTRS = {
"title": 0,
"label": 0,
"color": ATTRS_VAL["colors"],
"textcolor": ATTRS_VAL["colors"],
"bordercolor": ATTRS_VAL["colors"],
"width": 1,
"height": 1,
"borderwidth": 1,
"textmode": ATTRS_VAL["textmodes"],
"shape": ATTRS_VAL["shapes"],
"shrink": 1,
"stretch": 1,
"orientation": ATTRS_VAL["algos"],
"vertical_order": 1,
"horizontal_order": 1,
"xspace": 1,
"yspace": 1,
"layoutalgorithm": ATTRS_VAL["algos"],
"late_edge_labels": ATTRS_VAL["booleans"],
"display_edge_labels": ATTRS_VAL["booleans"],
"dirty_edge_labels": ATTRS_VAL["booleans"],
"finetuning": ATTRS_VAL["booleans"],
"manhattan_edges": ATTRS_VAL["booleans"],
"smanhattan_edges": ATTRS_VAL["booleans"],
"port_sharing": ATTRS_VAL["booleans"],
"edges": ATTRS_VAL["booleans"],
"nodes": ATTRS_VAL["booleans"],
"splines": ATTRS_VAL["booleans"],
}
NODE_ATTRS = {
"title": 0,
"label": 0,
"color": ATTRS_VAL["colors"],
"textcolor": ATTRS_VAL["colors"],
"bordercolor": ATTRS_VAL["colors"],
"width": 1,
"height": 1,
"borderwidth": 1,
"textmode": ATTRS_VAL["textmodes"],
"shape": ATTRS_VAL["shapes"],
"shrink": 1,
"stretch": 1,
"vertical_order": 1,
"horizontal_order": 1,
}
EDGE_ATTRS = {
"sourcename": 0,
"targetname": 0,
"label": 0,
"linestyle": ATTRS_VAL["linestyles"],
"class": 1,
"thickness": 0,
"color": ATTRS_VAL["colors"],
"textcolor": ATTRS_VAL["colors"],
"arrowcolor": ATTRS_VAL["colors"],
"backarrowcolor": ATTRS_VAL["colors"],
"arrowsize": 1,
"backarrowsize": 1,
"arrowstyle": ATTRS_VAL["arrowstyles"],
"backarrowstyle": ATTRS_VAL["arrowstyles"],
"textmode": ATTRS_VAL["textmodes"],
"priority": 1,
"anchor": 1,
"horizontal_order": 1,
}
# Misc utilities ###############################################################
class VCGPrinter:
"""A vcg graph writer.
"""
def __init__(self, output_stream):
self._stream = output_stream
self._indent = ""
def open_graph(self, **args):
"""open a vcg graph
"""
self._stream.write("%sgraph:{\n" % self._indent)
self._inc_indent()
self._write_attributes(GRAPH_ATTRS, **args)
def close_graph(self):
"""close a vcg graph
"""
self._dec_indent()
self._stream.write("%s}\n" % self._indent)
def node(self, title, **args):
"""draw a node
"""
self._stream.write('%snode: {title:"%s"' % (self._indent, title))
self._write_attributes(NODE_ATTRS, **args)
self._stream.write("}\n")
def edge(self, from_node, to_node, edge_type="", **args):
"""draw an edge from a node to another.
"""
self._stream.write(
'%s%sedge: {sourcename:"%s" targetname:"%s"'
% (self._indent, edge_type, from_node, to_node)
)
self._write_attributes(EDGE_ATTRS, **args)
self._stream.write("}\n")
# private ##################################################################
def _write_attributes(self, attributes_dict, **args):
"""write graph, node or edge attributes
"""
for key, value in args.items():
try:
_type = attributes_dict[key]
except KeyError:
raise Exception(
"""no such attribute %s
possible attributes are %s"""
% (key, attributes_dict.keys())
)
if not _type:
self._stream.write('%s%s:"%s"\n' % (self._indent, key, value))
elif _type == 1:
self._stream.write("%s%s:%s\n" % (self._indent, key, int(value)))
elif value in _type:
self._stream.write("%s%s:%s\n" % (self._indent, key, value))
else:
raise Exception(
"""value %s isn\'t correct for attribute %s
correct values are %s"""
% (value, key, _type)
)
def _inc_indent(self):
"""increment indentation
"""
self._indent = " %s" % self._indent
def _dec_indent(self):
"""decrement indentation
"""
self._indent = self._indent[:-2]
|
