FazBrowse GitHub Viewer
|
Trending
|
URL:
|
Home
Tools:
[Download Repo ZIP]
[View Raw Code]
[Original HTTPS Page]
cpython/Python/future.c at 3.6 · python/cpython · GitHub
Uh oh!
There was an error while loading.
Please reload this page
.
python
/
cpython
Public
Uh oh!
There was an error while loading.
Please reload this page
.
Notifications
You must be signed in to change notification settings
Fork
35.3k
Star
74.9k
Code
Issues
5k+
Pull requests
2.6k
Actions
Projects
Security and quality
0
Insights
Additional navigation options
Code
Issues
Pull requests
Actions
Projects
Security and quality
Insights
Expand file tree
Breadcrumbs
cpython
/
Python
/
future.c
Copy path
More file actions
More file actions
Latest commit
History
History
History
161 lines (140 loc) · 4.88 KB
Breadcrumbs
cpython
/
Python
/
future.c
Copy path
File metadata and controls
161 lines (140 loc) · 4.88 KB
Raw
Copy raw file
Download raw file
Open symbols panel
Edit and raw actions
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
#include
"Python.h"
#include
"Python-ast.h"
#include
"node.h"
#include
"token.h"
#include
"graminit.h"
#include
"code.h"
#include
"symtable.h"
#define
UNDEFINED_FUTURE_FEATURE
"future feature %.100s is not defined"
#define
ERR_LATE_FUTURE
\
"from __future__ imports must occur at the beginning of the file"
static
int
future_check_features
(
PyFutureFeatures
*
ff
,
stmt_ty
s
,
PyObject
*
filename
)
{
int
i
;
asdl_seq
*
names
;
assert
(
s
->
kind
==
ImportFrom_kind
);
names
=
s
->
v
.
ImportFrom
.
names
;
for
(
i
=
0
;
i
<
asdl_seq_LEN
(
names
);
i
++
) {
alias_ty
name
=
(
alias_ty
)
asdl_seq_GET
(
names
,
i
);
const
char
*
feature
=
PyUnicode_AsUTF8
(
name
->
name
);
if
(!
feature
)
return
0
;
if
(
strcmp
(
feature
,
FUTURE_NESTED_SCOPES
)
==
0
) {
continue
;
}
else
if
(
strcmp
(
feature
,
FUTURE_GENERATORS
)
==
0
) {
continue
;
}
else
if
(
strcmp
(
feature
,
FUTURE_DIVISION
)
==
0
) {
continue
;
}
else
if
(
strcmp
(
feature
,
FUTURE_ABSOLUTE_IMPORT
)
==
0
) {
continue
;
}
else
if
(
strcmp
(
feature
,
FUTURE_WITH_STATEMENT
)
==
0
) {
continue
;
}
else
if
(
strcmp
(
feature
,
FUTURE_PRINT_FUNCTION
)
==
0
) {
continue
;
}
else
if
(
strcmp
(
feature
,
FUTURE_UNICODE_LITERALS
)
==
0
) {
continue
;
}
else
if
(
strcmp
(
feature
,
FUTURE_BARRY_AS_BDFL
)
==
0
) {
ff
->
ff_features
|=
CO_FUTURE_BARRY_AS_BDFL
;
}
else
if
(
strcmp
(
feature
,
FUTURE_GENERATOR_STOP
)
==
0
) {
ff
->
ff_features
|=
CO_FUTURE_GENERATOR_STOP
;
}
else
if
(
strcmp
(
feature
,
"braces"
)
==
0
) {
PyErr_SetString
(
PyExc_SyntaxError
,
"not a chance"
);
PyErr_SyntaxLocationObject
(
filename
,
s
->
lineno
,
s
->
col_offset
);
return
0
;
}
else
{
PyErr_Format
(
PyExc_SyntaxError
,
UNDEFINED_FUTURE_FEATURE
,
feature
);
PyErr_SyntaxLocationObject
(
filename
,
s
->
lineno
,
s
->
col_offset
);
return
0
;
}
}
return
1
;
}
static
int
future_parse
(
PyFutureFeatures
*
ff
,
mod_ty
mod
,
PyObject
*
filename
)
{
int
i
,
done
=
0
,
prev_line
=
0
;
stmt_ty
first
;
if
(!(
mod
->
kind
==
Module_kind
||
mod
->
kind
==
Interactive_kind
))
return
1
;
if
(
asdl_seq_LEN
(
mod
->
v
.
Module
.
body
)
==
0
)
return
1
;
/* A subsequent pass will detect future imports that don't
appear at the beginning of the file. There's one case,
however, that is easier to handle here: A series of imports
joined by semi-colons, where the first import is a future
statement but some subsequent import has the future form
but is preceded by a regular import.
*/
i
=
0
;
first
=
(
stmt_ty
)
asdl_seq_GET
(
mod
->
v
.
Module
.
body
,
i
);
if
(
first
->
kind
==
Expr_kind
&&
(
first
->
v
.
Expr
.
value
->
kind
==
Str_kind
||
(
first
->
v
.
Expr
.
value
->
kind
==
Constant_kind
&&
PyUnicode_CheckExact
(
first
->
v
.
Expr
.
value
->
v
.
Constant
.
value
))))
i
++
;
for
(;
i
<
asdl_seq_LEN
(
mod
->
v
.
Module
.
body
);
i
++
) {
stmt_ty
s
=
(
stmt_ty
)
asdl_seq_GET
(
mod
->
v
.
Module
.
body
,
i
);
if
(
done
&&
s
->
lineno
>
prev_line
)
return
1
;
prev_line
=
s
->
lineno
;
/* The tests below will return from this function unless it is
still possible to find a future statement. The only things
that can precede a future statement are another future
statement and a doc string.
*/
if
(
s
->
kind
==
ImportFrom_kind
) {
identifier
modname
=
s
->
v
.
ImportFrom
.
module
;
if
(
modname
&&
_PyUnicode_EqualToASCIIString
(
modname
,
"__future__"
)) {
if
(
done
) {
PyErr_SetString
(
PyExc_SyntaxError
,
ERR_LATE_FUTURE
);
PyErr_SyntaxLocationObject
(
filename
,
s
->
lineno
,
s
->
col_offset
);
return
0
;
}
if
(!
future_check_features
(
ff
,
s
,
filename
))
return
0
;
ff
->
ff_lineno
=
s
->
lineno
;
}
else
{
done
=
1
;
}
}
else
{
done
=
1
;
}
}
return
1
;
}
PyFutureFeatures
*
PyFuture_FromASTObject
(
mod_ty
mod
,
PyObject
*
filename
)
{
PyFutureFeatures
*
ff
;
ff
=
(
PyFutureFeatures
*
)
PyObject_Malloc
(
sizeof
(
PyFutureFeatures
));
if
(
ff
==
NULL
) {
PyErr_NoMemory
();
return
NULL
;
}
ff
->
ff_features
=
0
;
ff
->
ff_lineno
=
-1
;
if
(!
future_parse
(
ff
,
mod
,
filename
)) {
PyObject_Free
(
ff
);
return
NULL
;
}
return
ff
;
}
PyFutureFeatures
*
PyFuture_FromAST
(
mod_ty
mod
,
const
char
*
filename_str
)
{
PyFutureFeatures
*
ff
;
PyObject
*
filename
;
filename
=
PyUnicode_DecodeFSDefault
(
filename_str
);
if
(
filename
==
NULL
)
return
NULL
;
ff
=
PyFuture_FromASTObject
(
mod
,
filename
);
Py_DECREF
(
filename
);
return
ff
;
}
Back
|
FazBrowse Home
|
New Git URL