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
271
272
|
#!/usr/bin/env python3
# ex: set filetype=python:
"""Generate code to handle XDR struct types"""
from jinja2 import Environment
from generators import SourceGenerator, kernel_c_type
from generators import create_jinja2_environment, get_jinja2_template
from xdr_ast import _XdrBasic, _XdrVariableLengthString
from xdr_ast import _XdrFixedLengthOpaque, _XdrVariableLengthOpaque
from xdr_ast import _XdrFixedLengthArray, _XdrVariableLengthArray
from xdr_ast import _XdrOptionalData, _XdrStruct, _XdrDeclaration
from xdr_ast import public_apis
def emit_struct_declaration(environment: Environment, node: _XdrStruct) -> None:
"""Emit one declaration pair for an XDR struct type"""
if node.name in public_apis:
template = get_jinja2_template(environment, "declaration", "close")
print(template.render(name=node.name))
def emit_struct_member_definition(
environment: Environment, field: _XdrDeclaration
) -> None:
"""Emit a definition for one field in an XDR struct"""
if isinstance(field, _XdrBasic):
template = get_jinja2_template(environment, "definition", field.template)
print(
template.render(
name=field.name,
type=kernel_c_type(field.spec),
classifier=field.spec.c_classifier,
)
)
elif isinstance(field, _XdrFixedLengthOpaque):
template = get_jinja2_template(environment, "definition", field.template)
print(
template.render(
name=field.name,
size=field.size,
)
)
elif isinstance(field, _XdrVariableLengthOpaque):
template = get_jinja2_template(environment, "definition", field.template)
print(template.render(name=field.name))
elif isinstance(field, _XdrVariableLengthString):
template = get_jinja2_template(environment, "definition", field.template)
print(template.render(name=field.name))
elif isinstance(field, _XdrFixedLengthArray):
template = get_jinja2_template(environment, "definition", field.template)
print(
template.render(
name=field.name,
type=kernel_c_type(field.spec),
size=field.size,
)
)
elif isinstance(field, _XdrVariableLengthArray):
template = get_jinja2_template(environment, "definition", field.template)
print(
template.render(
name=field.name,
type=kernel_c_type(field.spec),
classifier=field.spec.c_classifier,
)
)
elif isinstance(field, _XdrOptionalData):
template = get_jinja2_template(environment, "definition", field.template)
print(
template.render(
name=field.name,
type=kernel_c_type(field.spec),
classifier=field.spec.c_classifier,
)
)
def emit_struct_definition(environment: Environment, node: _XdrStruct) -> None:
"""Emit one definition for an XDR struct type"""
template = get_jinja2_template(environment, "definition", "open")
print(template.render(name=node.name))
for field in node.fields:
emit_struct_member_definition(environment, field)
template = get_jinja2_template(environment, "definition", "close")
print(template.render(name=node.name))
def emit_struct_member_decoder(
environment: Environment, field: _XdrDeclaration
) -> None:
"""Emit a decoder for one field in an XDR struct"""
if isinstance(field, _XdrBasic):
template = get_jinja2_template(environment, "decoder", field.template)
print(
template.render(
name=field.name,
type=field.spec.type_name,
classifier=field.spec.c_classifier,
)
)
elif isinstance(field, _XdrFixedLengthOpaque):
template = get_jinja2_template(environment, "decoder", field.template)
print(
template.render(
name=field.name,
size=field.size,
)
)
elif isinstance(field, _XdrVariableLengthOpaque):
template = get_jinja2_template(environment, "decoder", field.template)
print(
template.render(
name=field.name,
maxsize=field.maxsize,
)
)
elif isinstance(field, _XdrVariableLengthString):
template = get_jinja2_template(environment, "decoder", field.template)
print(
template.render(
name=field.name,
maxsize=field.maxsize,
)
)
elif isinstance(field, _XdrFixedLengthArray):
template = get_jinja2_template(environment, "decoder", field.template)
print(
template.render(
name=field.name,
type=field.spec.type_name,
size=field.size,
classifier=field.spec.c_classifier,
)
)
elif isinstance(field, _XdrVariableLengthArray):
template = get_jinja2_template(environment, "decoder", field.template)
print(
template.render(
name=field.name,
type=field.spec.type_name,
maxsize=field.maxsize,
classifier=field.spec.c_classifier,
)
)
elif isinstance(field, _XdrOptionalData):
template = get_jinja2_template(environment, "decoder", field.template)
print(
template.render(
name=field.name,
type=field.spec.type_name,
classifier=field.spec.c_classifier,
)
)
def emit_struct_decoder(environment: Environment, node: _XdrStruct) -> None:
"""Emit one decoder function for an XDR struct type"""
template = get_jinja2_template(environment, "decoder", "open")
print(template.render(name=node.name))
for field in node.fields:
emit_struct_member_decoder(environment, field)
template = get_jinja2_template(environment, "decoder", "close")
print(template.render())
def emit_struct_member_encoder(
environment: Environment, field: _XdrDeclaration
) -> None:
"""Emit an encoder for one field in an XDR struct"""
if isinstance(field, _XdrBasic):
template = get_jinja2_template(environment, "encoder", field.template)
print(
template.render(
name=field.name,
type=field.spec.type_name,
)
)
elif isinstance(field, _XdrFixedLengthOpaque):
template = get_jinja2_template(environment, "encoder", field.template)
print(
template.render(
name=field.name,
size=field.size,
)
)
elif isinstance(field, _XdrVariableLengthOpaque):
template = get_jinja2_template(environment, "encoder", field.template)
print(
template.render(
name=field.name,
maxsize=field.maxsize,
)
)
elif isinstance(field, _XdrVariableLengthString):
template = get_jinja2_template(environment, "encoder", field.template)
print(
template.render(
name=field.name,
maxsize=field.maxsize,
)
)
elif isinstance(field, _XdrFixedLengthArray):
template = get_jinja2_template(environment, "encoder", field.template)
print(
template.render(
name=field.name,
type=field.spec.type_name,
size=field.size,
)
)
elif isinstance(field, _XdrVariableLengthArray):
template = get_jinja2_template(environment, "encoder", field.template)
print(
template.render(
name=field.name,
type=field.spec.type_name,
maxsize=field.maxsize,
)
)
elif isinstance(field, _XdrOptionalData):
template = get_jinja2_template(environment, "encoder", field.template)
print(
template.render(
name=field.name,
type=field.spec.type_name,
classifier=field.spec.c_classifier,
)
)
def emit_struct_encoder(environment: Environment, node: _XdrStruct) -> None:
"""Emit one encoder function for an XDR struct type"""
template = get_jinja2_template(environment, "encoder", "open")
print(template.render(name=node.name))
for field in node.fields:
emit_struct_member_encoder(environment, field)
template = get_jinja2_template(environment, "encoder", "close")
print(template.render())
class XdrStructGenerator(SourceGenerator):
"""Generate source code for XDR structs"""
def __init__(self, language: str, peer: str):
"""Initialize an instance of this class"""
self.environment = create_jinja2_environment(language, "struct")
self.peer = peer
def emit_declaration(self, node: _XdrStruct) -> None:
"""Emit one declaration pair for an XDR struct type"""
emit_struct_declaration(self.environment, node)
def emit_definition(self, node: _XdrStruct) -> None:
"""Emit one definition for an XDR struct type"""
emit_struct_definition(self.environment, node)
def emit_decoder(self, node: _XdrStruct) -> None:
"""Emit one decoder function for an XDR struct type"""
emit_struct_decoder(self.environment, node)
def emit_encoder(self, node: _XdrStruct) -> None:
"""Emit one encoder function for an XDR struct type"""
emit_struct_encoder(self.environment, node)
|
