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
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
|
'''
Flowchart based particle parser.
'''
import re
from .instrgeom import RayBundle, ParticleStory, ParticleCompGroup, ParticleState
from .flowchart import FCNTerminal, FCNDecisionBool, FCNDecisionMulti, FCNProcess, FlowChartControl
# terminal nodes implementation
def t_begin(args):
print("starting particle parsing")
def t_end(args):
print("ended particle parsing")
def t_error(args):
print(args['linegetter'].current())
raise Exception("error")
def t_error2(args):
print(args['linegetter'].current())
raise Exception("error2")
def t_error3(args):
print(args['linegetter'].current())
raise Exception("error3")
def t_error4(args):
print(args['linegetter'].current())
raise Exception("error4")
def t_error5(args):
print(args['linegetter'].current())
raise Exception("error5")
# decision nodes implementation
def d_isenter(args):
m = re.match(r'ENTER:', args['linegetter'].current())
return m is not None
def d_done(args):
return args['linegetter'].isempty()
def d_isstate(args):
m = re.match(r'STATE:', args['linegetter'].current())
return m is not None
def d_isscatter(args):
m = re.match(r'SCATTER:', args['linegetter'].current())
return m is not None
def d_iscomp(args):
m = re.match(r'COMP:', args['linegetter'].current())
return m is not None
def d_isleave(args):
m = re.match(r'LEAVE:', args['linegetter'].current())
return m is not None
def d_iskeywd(args):
line = args['linegetter'].current()
m0 = re.match(r'COMP:', line)
if m0:
return 0
m1 = re.match(r'SCATTER:', line)
if m1:
return 1
m2 = re.match(r'ABSORB:', line)
if m2:
return 2
m3 = re.match(r'LEAVE:', line)
if m3:
return 3
m4 = re.match(r'STATE:', line)
if m4:
return 4
m5 = re.match(r'ENTER:', line)
if m5:
return 4
raise Exception("wrong line: %s" % line)
# process nodes implementation --- NOTE: all process nodes increment line idx by one
def p_newparticle(args):
args['weaver'].new_story()
args['linegetter'].inc()
def p_ignoreline(args):
args['linegetter'].inc()
def p_addcomp(args):
linegetter = args['linegetter']
weaver = args['weaver']
weaver.close_comp()
weaver.new_comp(_get_compname(linegetter.current()))
linegetter.inc()
def p_addpoint(args):
linegetter = args['linegetter']
args['weaver'].new_point(_get_strcoords(linegetter.current()))
linegetter.inc()
def p_addpointclose(args):
linegetter = args['linegetter']
args['weaver'].new_point(_get_strcoords(linegetter.current()))
weaver = args['weaver']
weaver.close_comp()
weaver.close_story()
linegetter.inc()
# helper functions implementation
def _get_strcoords(line):
m = re.match(r'\w+: ([\d\.\+\-e]+), ([\d\.\+\-e]+), ([\d\.\+\-e]+), ([\d\.\+\-e]+), ([\d\.\+\-e]+), ([\d\.\+\-e]+), ([\d\.\+\-e]+), ([\d\.\+\-e]+), ([\d\.\+\-e]+), ([\d\.\+\-e]+), ([\d\.\+\-e]+)', line)
return [m.group(1), m.group(2), m.group(3), m.group(4), m.group(5), m.group(6), m.group(7), m.group(8), m.group(9), m.group(10), m.group(11)]
def _get_compname(line):
m = re.match(r'COMP: \"(\w+)\"', line)
return m.group(1)
# action code helper classes
class ParticleBundleWeaver(object):
''' creates the particle ray data structure by aid of a bunch of functions that can be called in succession '''
def __init__(self):
self._rays = []
self._bundle = RayBundle(self._rays)
self._compgroup = None
self._story = None
def new_story(self):
if self._story is not None:
raise Exception("Close the current story before adding a new one.")
self._story = ParticleStory()
self._rays.append(self._story)
def new_comp(self, compname):
if self._story is None:
raise Exception("You must add a particle story before adding a compgroup.")
if self._compgroup is not None:
raise Exception("Close the current compgroup before adding a new one.")
self._compgroup = ParticleCompGroup(compname)
self._story.add_group(self._compgroup)
def new_point(self, point_str):
if self._compgroup is None:
raise Exception("You must add a compgroup before adding points.")
point = ParticleState(point_str)
self._compgroup.add_event(point)
def close_comp(self):
self._compgroup = None
def close_story(self):
self._story = None
def get_particles(self):
if self._story == None and self._compgroup == None:
return self._bundle
else:
raise Exception("Close compgroup and story before fetching the particle bundle.")
class LineGetter(object):
def __init__(self, text):
self.lines = text.splitlines()
self.idx = 0
def current(self):
if not self.idx >= len(self.lines):
return self.lines[self.idx]
def prev(self):
if not self.idx == 0:
return self.lines[self.idx-1]
def next(self):
if not self.idx == len(self.lines) - 1:
return self.lines[self.idx+1]
def inc(self):
self.idx += 1
def isempty(self):
return self.idx >= len(self.lines)
# flowchart assembly and execution
class FlowChartParticleTraceParser(object):
def __init__(self):
# terminal nodes
t1 = FCNTerminal(key="begin", fct=t_begin)
t2 = FCNTerminal(key="end", fct=t_end)
t3 = FCNTerminal(key="error", fct=t_error)
t4 = FCNTerminal(key="error2", fct=t_error2)
t5 = FCNTerminal(key="error3", fct=t_error3)
t6 = FCNTerminal(key="error4", fct=t_error4)
t7 = FCNTerminal(key="error5", fct=t_error5)
# decision nodes
d0 = FCNDecisionBool(fct=d_done)
d1 = FCNDecisionBool(fct=d_isenter)
d2 = FCNDecisionBool(fct=d_isstate)
d3 = FCNDecisionMulti(fct=d_iskeywd)
d4 = FCNDecisionBool(fct=d_isstate)
d5 = FCNDecisionBool(fct=d_isstate)
d5_b = FCNDecisionBool(fct=d_isscatter)
d5_c = FCNDecisionBool(fct=d_iscomp)
d6 = FCNDecisionBool(fct=d_isstate)
d7 = FCNDecisionBool(fct=d_isstate)
d8 = FCNDecisionBool(fct=d_isleave)
# process nodes
p1 = FCNProcess(fct=p_newparticle)
p2 = FCNProcess(fct=p_ignoreline)
p3 = FCNProcess(fct=p_addcomp)
p4 = FCNProcess(fct=p_addpoint)
p5 = FCNProcess(fct=p_addpoint)
p6 = FCNProcess(fct=p_ignoreline)
p7 = FCNProcess(fct=p_ignoreline)
p8 = FCNProcess(fct=p_addpoint)
p9 = FCNProcess(fct=p_ignoreline)
p10 = FCNProcess(fct=p_addpointclose)
p12 = FCNProcess(fct=p_ignoreline)
# assemble the flowchart from top
t1.set_nodenext(node_next=d0)
d0.set_nodes(node_T=t2, node_F=d1)
d1.set_nodes(node_T=p1, node_F=t3)
p1.set_nodenext(node_next=d2)
d2.set_nodes(node_T=p2, node_F=t4)
p2.set_nodenext(node_next=d3)
d3.set_node_lst(node_lst=[p3, p5, p7, p9, p12])
p3.set_nodenext(node_next=d4)
d4.set_nodes(node_T=p4, node_F=t5)
p4.set_nodenext(node_next=d3)
p5.set_nodenext(node_next=d5)
d5.set_nodes(node_T=p6, node_F=d5_b)
d5_b.set_nodes(node_T=p5, node_F=d5_c)
d5_c.set_nodes(node_T=d3, node_F=t6)
p6.set_nodenext(node_next=d3)
p7.set_nodenext(node_next=d6)
d6.set_nodes(node_T=p8, node_F=d3)
p8.set_nodenext(node_next=d8) # <-- this event rarely happens for most instruments!
d8.set_nodes(node_T=p7, node_F=d3)
p9.set_nodenext(node_next=d7)
d7.set_nodes(node_T=p10, node_F=t7)
p10.set_nodenext(node_next=d0)
p12.set_nodenext(node_next=d3)
self.rootnode = t1
def execute(self, text):
# set args according to the above implementation and execute the flowchart
args = {}
args['linegetter'] = LineGetter(text)
weaver = ParticleBundleWeaver()
args['weaver'] = weaver
flowchart = FlowChartControl(self.rootnode)
flowchart.process(args)
return weaver.get_particles()
|
