forked from hakril/PythonForWindows
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathstruct_parser.py
More file actions
158 lines (133 loc) · 5.57 KB
/
Copy pathstruct_parser.py
File metadata and controls
158 lines (133 loc) · 5.57 KB
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
import dummy_wintypes
import itertools
from winstruct import WinStruct, WinUnion, WinStructType, Ptr, WinEnum
from simpleparser import *
class WinStructParser(Parser):
def __init__(self, *args, **kwargs):
super(WinStructParser, self).__init__(*args, **kwargs)
self.pack = None
def parse_array(self, ):
self.assert_token_type(OpenSquareBracketToken)
number = self.assert_token_type(NameToken).value
self.assert_token_type(CloseSquareBracketToken)
return number
def parse_def(self):
if self.peek() == KeywordToken("struct"):
discard = self.next_token()
def_type_tok = self.assert_token_type(NameToken)
def_type = WinStructType(def_type_tok.value)
if type(self.peek()) == StarToken:
def_type = Ptr(def_type)
discard_star = self.next_token()
def_name = self.assert_token_type(NameToken)
if type(self.peek()) == ColonToken:
self.next_token()
return (def_type, def_name, 1)
number_rep = self.parse_array()
self.assert_token_type(ColonToken)
return (def_type, def_name, number_rep)
def parse_typedef(self, struct):
sep = CommaToken()
while type(sep) == CommaToken:
add_to_typedef = struct.add_typedef
if type(self.peek()) == StarToken:
self.next_token()
add_to_typedef = struct.add_ptr_typedef
name = self.assert_token_type(NameToken)
# UGLY HACK for LDR definition
if name.value == "RESTRICTED_POINTER":
name = self.assert_token_type(NameToken)
add_to_typedef(name.value)
sep = self.next_token()
self.assert_token_type(ColonToken, sep)
def parse_enum(self):
"""Handle enum typedef with no value assignement and 1 typedef after"""
enum_name = self.assert_token_type(NameToken).value
res_enum = WinEnum(enum_name)
self.assert_token_type(OpenBracketToken)
count = itertools.count()
assigned_value = False
while type(self.peek()) != CloseBracketToken:
i = next(count)
name = self.assert_token_type(NameToken)
if type(self.peek()) == EqualToken:
if i != 0 and not assigned_value:
raise ParsingError("Enum {0} mix def with and without equal".format(enum_name))
assigned_value = True
self.assert_token_type(EqualToken)
i = self.promote_to_int(self.next_token())
else:
if assigned_value:
raise ParsingError("Enum {0} mix def with and without equal".format(enum_name))
res_enum.add_enum_entry(i, name.value)
if not type(self.peek()) == CloseBracketToken:
self.assert_token_type(CommaToken)
self.assert_token_type(CloseBracketToken)
self.parse_typedef(res_enum)
#other_name = self.assert_token_type(NameToken).value
#res_enum.add_typedef(other_name)
#self.assert_token_type(ColonToken)
return res_enum
def parse_winstruct(self):
is_typedef = False
peeked = self.peek()
if peeked == KeywordToken("typedef"):
self.assert_keyword("typedef")
is_typedef = True
def_type = self.assert_token_type(KeywordToken)
if def_type.value == "enum":
return self.parse_enum()
if def_type.value == "struct":
WinDefType = WinStruct
elif def_type.value == "union":
WinDefType = WinUnion
else:
raise ParsingError("Expecting union or struct got <{0}> instead".format(def_type.value))
struct_name = self.assert_token_type(NameToken)
self.assert_token_type(OpenBracketToken)
result = WinDefType(struct_name.value, self.pack)
while type(self.peek()) != CloseBracketToken:
tok_type, tok_name, nb_rep = self.parse_def()
result.add_field((tok_type, tok_name.value, nb_rep))
self.assert_token_type(CloseBracketToken)
if is_typedef:
self.parse_typedef(result)
else:
self.assert_token_type(ColonToken)
return result
def parse(self):
strucs = []
enums = []
while self.peek() is not None:
# HANDLE PRAGMA_PACK / PRAGMA_NOPACK
if type(self.peek()) == NameToken:
pragma = self.next_token().value
if pragma == "PRAGMA_NOPACK":
self.pack = None
continue
if pragma != "PRAGMA_PACK":
raise ValueError("Expected struct/union def or PRAGMA_[NO]PACK")
pack_value = self.promote_to_int(self.next_token())
self.pack = pack_value
x = self.parse_winstruct()
#x.packing = self.pack
#if x.packing != None:
# print("{0} pack = {1}".format(x.name, x.packing))
if type(x) == WinStruct or type(x) == WinUnion:
strucs.append(x)
elif type(x) == WinEnum:
enums.append(x)
else:
raise ValueError("Unknow returned type {0}".format(x))
return strucs, enums
def dbg_lexer(data):
for i in Lexer(data).token_generation():
print i
def dbg_parser(data):
return WinStructParser(data).parse()
def dbg_validate(data):
return validate_structs(Parser(data).parse())
if __name__ == "__main__":
import sys
#data = open(sys.argv[1], 'r').read()
#ctypes_code = generate_ctypes(data)