libamxo  4.3.4
Object Definition Language (ODL) parsing
action_rr.py
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1 # https://pypi.org/project/railroad-diagrams/
2 # https://jakearchibald.github.io/svgomg/
3 
4 from railroad import *
5 
6 css_rr = """svg.railroad-diagram {
7  background-color:hsl(30,20%,95%);
8 }
9 svg.railroad-diagram path {
10  stroke-width:3;
11  stroke:black;
12  fill:rgba(0,0,0,0);
13 }
14 svg.railroad-diagram text {
15  font:bold 14px monospace;
16  text-anchor:middle;
17 }
18 svg.railroad-diagram text.label{
19  text-anchor:start;
20 }
21 svg.railroad-diagram text.comment{
22  font:italic 12px monospace;
23 }
24 svg.railroad-diagram rect{
25  stroke-width:3;
26  stroke:black;
27  fill:hsl(120,100%,90%);
28 }
29 svg.railroad-diagram g.non-terminal rect{
30  stroke: black;
31  fill: white;
32 )
33 svg.railroad-diagram rect.group-box {
34  stroke: gray;
35  stroke-dasharray: 10 5;
36  fill: none;
37 }"""
38 
39 d = Diagram(
40  Sequence(
41  Terminal("on"),
42  Terminal("action"),
43  Choice(0,
44  Terminal("read"),
45  Terminal("write"),
46  Terminal("list"),
47  Terminal("describe"),
48  Terminal("validate"),
49  Terminal("destroy"),
50  Terminal("add-inst"),
51  Terminal("del-inst"),
52  Terminal("translate"),
53  Terminal("apply")
54  ),
55  Terminal("call"),
56  Choice(0,
57  Terminal("<NAME>"),
58  Terminal("'<NAME>'"),
59  Terminal('"<NAME>"')
60  ),
61  Optional(
62  NonTerminal("RESOLVER"), "skip"
63  ),
64  Optional(
65  Terminal("<VALUE>"), "skip"
66  ),
67  Terminal(";")
68  )
69 )
70 
71 d.writeStandalone(sys.stdout.write, css=css_rr)