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
|
from pypy.interpreter.astcompiler import ast, misc
from pypy.interpreter.error import OperationError
class UnacceptableExpressionContext(Exception):
def __init__(self, node, msg):
self.node = node
self.msg = msg
setattr(ast, "UnacceptableExpressionContext", UnacceptableExpressionContext)
class __extend__(ast.AST):
def as_node_list(self, space):
raise AssertionError("only for expressions")
def set_context_copy(self, ctx):
""" make a copy of the node, with ctx set """
raise AssertionError("should only be on expressions")
def get_source_segment(self, source, padded=False):
lineno = self.lineno - 1 # both 0-based
end_lineno = self.end_lineno - 1
if lineno < 0:
return None
if end_lineno < 0:
return None
col_offset = self.col_offset
end_col_offset = self.end_col_offset
if col_offset < 0:
return None
if end_col_offset < 0:
return None
s = source.splitlines(True)
if lineno == end_lineno:
return s[lineno][col_offset:end_col_offset]
first = s[lineno][col_offset:]
if padded:
first = " " * col_offset + first
res = [first]
for i in range(lineno+1, end_lineno):
res.append(s[i])
res.append(s[end_lineno][:end_col_offset])
return "".join(res)
def location(self):
return (self.lineno, self.col_offset, self.end_lineno, self.end_col_offset)
class __extend__(ast.expr):
constant = False
_description = None
_type_name = None
def _get_descr(self, space):
return self._description or "???" # better than a crash
def _get_type_name(self, space):
return self._type_name
def as_node_list(self, space):
return None
def set_context_copy(self, ctx):
assert 0, "should be unreachable"
class __extend__(ast.List):
_description = "list"
def as_node_list(self, space):
return self.elts
def set_context_copy(self, ctx):
return ast.List(
set_context_copy_list(self.elts, ctx),
ctx,
*self.location())
class __extend__(ast.Attribute):
_description = 'attribute'
def set_context_copy(self, ctx):
return ast.Attribute(
self.value,
self.attr,
ctx,
*self.location())
self.ctx = ctx
class __extend__(ast.Subscript):
_description = 'subscript'
def set_context_copy(self, ctx):
return ast.Subscript(
self.value,
self.slice,
ctx,
*self.location())
class __extend__(ast.Name):
def set_context_copy(self, ctx):
return ast.Name(
self.id,
ctx,
*self.location())
class __extend__(ast.Tuple):
_description = "tuple"
_type_name = "tuple"
def as_node_list(self, space):
return self.elts
def set_context_copy(self, ctx):
return ast.Tuple(
set_context_copy_list(self.elts, ctx),
ctx,
*self.location())
class __extend__(ast.Lambda):
_description = "lambda"
_type_name = "function"
class __extend__(ast.Call):
_description = "function call"
class __extend__(ast.BoolOp, ast.BinOp, ast.UnaryOp):
_description = "expression"
class __extend__(ast.GeneratorExp):
_description = "generator expression"
_type_name = "generator"
class __extend__(ast.Yield):
_description = "yield expression"
class __extend__(ast.ListComp):
_description = "list comprehension"
_type_name = "list"
class __extend__(ast.SetComp):
_description = "set comprehension"
_type_name = "set"
class __extend__(ast.DictComp):
_description = "dict comprehension"
_type_name = "dict"
class __extend__(ast.List):
_type_name = "list"
class __extend__(ast.Dict):
_description = "dict literal"
_type_name = "dict"
class __extend__(ast.Set):
_description = "set display"
_type_name = "set"
class __extend__(ast.JoinedStr, ast.FormattedValue):
_description = "f-string expression"
_type_name = "str"
class __extend__(ast.Compare):
_description = "comparison"
class __extend__(ast.Starred):
_description = "starred expression"
def set_context_copy(self, ctx):
return ast.Starred(
self.value.set_context_copy(ctx),
ctx,
*self.location())
class __extend__(ast.NamedExpr):
_description = "named expression"
class __extend__(ast.IfExp):
_description = "conditional expression"
class __extend__(ast.Constant):
constant = True
_description = 'literal'
def as_node_list(self, space):
try:
values_w = space.unpackiterable(self.value)
except OperationError:
return None
line = self.lineno
column = self.col_offset
return [ast.Constant(w_obj, space.w_None, line, column, self.end_lineno, self.end_col_offset) for w_obj in values_w]
def _get_descr(self, space):
for singleton, name in [
(space.w_True, 'True'),
(space.w_False, 'False'),
(space.w_None, 'None'),
(space.w_Ellipsis, 'ellipsis')
]:
if space.is_w(self.value, singleton):
return name
return self._description
def _get_type_name(self, space):
return space.type(self.value).name
def set_context_copy_list(elts, ctx):
if elts is None:
return elts
return [elt.set_context_copy(ctx) for elt in elts]
|
