def modules():
return ["python_inv"]
def derive(module, parameters):
assert module == r"python_inv"
if parameters.keys() != {r"\width"}:
raise ValueError("Invalid parameters")
return "ilang", r"""
module \impl
wire width {width:d} input 1 \i
wire width {width:d} output 2 \o
cell $neg $0
parameter \A_SIGNED 1'0
parameter \A_WIDTH 32'{width:b}
parameter \Y_WIDTH 32'{width:b}
connect \A \i
connect \Y \o
end
end
module \python_inv
wire width {width:d} input 1 \i
wire width {width:d} output 2 \o
cell \impl $0
connect \i \i
connect \o \o
end
end
""".format(width=parameters[r"\width"])
# ----------------------------------------------------------------------------
import json
import argparse
import sys, socket, os
try:
import msvcrt, win32pipe, win32file
except ImportError:
msvcrt = win32pipe = win32file = None
def map_parameter(parameter):
if parameter["type"] == "unsigned":
return int(parameter["value"], 2)
if parameter["type"] == "signed":
width = len(parameter["value"])
value = int(parameter["value"], 2)
if value & (1 << (width - 1)):
value = -((1 << width) - value)
return value
if parameter["type"] == "string":
return parameter["value"]
if parameter["type"] == "real":
return float(parameter["value"])
def call(input_json):
input = json.loads(input_json)
if input["method"] == "modules":
return json.dumps({"modules": modules()})
if input["method"] == "derive":
try:
frontend, source = derive(input["module"],
{name: map_parameter(value) for name, value in input["parameters"].items()})
return json.dumps({"frontend": frontend, "source": source})
except ValueError as e:
return json.dumps({"error": str(e)})
def main():
parser = argparse.ArgumentParser()
modes = parser.add_subparsers(dest="mode")
mode_stdio = modes.add_parser("stdio")
if os.name == "posix":
mode_path = modes.add_parser("unix-socket")
if os.name == "nt":
mode_path = modes.add_parser("named-pipe")
mode_path.add_argument("path")
args = parser.parse_args()
if args.mode == "stdio":
while True:
input = sys.stdin.readline()
if not input: break
sys.stdout.write(call(input) + "\n")
sys.stdout.flush()
if args.mode == "unix-socket":
sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
sock.bind(args.path)
try:
sock.listen(1)
conn, addr = sock.accept()
file = conn.makefile("rw")
while True:
input = file.readline()
if not input: break
file.write(call(input) + "\n")
file.flush()
finally:
sock.close()
os.unlink(args.path)
if args.mode == "named-pipe":
pipe = win32pipe.CreateNamedPipe(args.path, win32pipe.PIPE_ACCESS_DUPLEX,
win32pipe.PIPE_TYPE_BYTE|win32pipe.PIPE_READMODE_BYTE|win32pipe.PIPE_WAIT,
1, 4096, 4096, 0, None)
win32pipe.ConnectNamedPipe(pipe, None)
try:
while True:
input = b""
while not input.endswith(b"\n"):
result, data = win32file.ReadFile(pipe, 4096)
assert result == 0
input += data
assert not b"\n" in input or input.endswith(b"\n")
output = (call(input.decode("utf-8")) + "\n").encode("utf-8")
length = len(output)
while length > 0:
result, done = win32file.WriteFile(pipe, output)
assert result == 0
length -= done
except win32file.error as e:
if e.args[0] == 109: # ERROR_BROKEN_PIPE
pass
else:
raise
if __name__ == "__main__":
main()
f='#n6'>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
|