-
Notifications
You must be signed in to change notification settings - Fork 1
/
translator.py
164 lines (146 loc) · 6.76 KB
/
translator.py
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
# -*- coding: utf-8 -*-
import string
import javatools
import javatools.opcodes as opcodes
from javatools.pack import unpack
import re
def template_name(name):
import os
return 'templates' + os.sep + name + 'Template.java'
def escaped_name(name):
def f(matchobj):
s = matchobj.group(0)
hm = {
'/': u'αsα',
'(': u'αlα',
')': u'αrα',
';': u'αscα',
}
return hm[s]
return re.sub("[/();]", f, name)
def fill_template(template, **kwargs):
def f(match_name, indent=''):
return indent + ("\n" + indent).join(unicode(kwargs[match_name]).split('\n'))
return re.sub("<%(\w+)%>", lambda m: f(m.group(1)),
re.sub("(.*)<%(\w+)%>", lambda m: f(m.group(2), m.group(1)), template, flags=re.MULTILINE))
class Method(object):
def __init__(self, method_info, action_type):
self.action_type = action_type
self.info = method_info
self.code = []
def escaped_name(self):
return escaped_name(self.info.get_name()) + '_' + \
escaped_name(self.info.get_descriptor())
def java_code(self):
with open(template_name(self.action_type.capitalize())) as f:
template = f.read()
code = '\n'.join('mv.' + line + ';' for line in self.code)
return fill_template(template, name=self.escaped_name(), code=code)
class Translator(object):
def __init__(self):
self.class_codes = {}
def java_code(self):
with open(template_name('Factory')) as f:
template = f.read()
code = ''
for name in self.class_codes.keys():
code += fill_template(
'if (name.equals("<%name%>")) return new Class<%escaped_name%>Adapter(api, cv);',
name=name, escaped_name=escaped_name(name))
return fill_template(template, code=code) + '\n'.join(self.class_codes.values())
def handle_class(self, klass):
results = []
for m in klass.methods:
result = self.handle_method(m)
if result is not None:
results.append(result)
with open(template_name('Class')) as f:
template = f.read()
code = ""
for m in results:
code += fill_template("""
if (name.equals("<%name%>") && desc.equals("<%desc%>")) {
if (access != <%access%>) throw new AssertionError("access flag mismatch: Expected " + <%access%> + " but got " + access);
return new Method<%escaped_name%>Adapter(mv);
}\n""", name=m.info.get_name(), desc=m.info.get_descriptor(),
access=m.info.access_flags,
escaped_name=m.escaped_name())
code += "return mv;"
class_name = klass.get_this()
self.class_codes[class_name] = \
fill_template(template, name=escaped_name(class_name), code=code,
method_code="\n".join(m.java_code() for m in results))
def handle_method(self, method):
code = method.get_code()
if code is None:
return
m = None
for ann in method.get_invisible_annotations():
t = ann.pretty_type().split('.')[-1]
if t in ['replace', 'prepend']:
m = Method(method, t)
break
else:
return
cpool = code.cpool
for offset, opcode, args in code.disassemble():
name = opcodes.get_opname_by_code(opcode).upper()
if m.action_type != 'replace' and 'RETURN' in name:
continue
if name in ['NOP', 'ACONST_NULL', 'ICONST_M1', 'ICONST_0',
'ICONST_1', 'ICONST_2', 'ICONST_3', 'ICONST_4', 'ICONST_5',
'LCONST_0', 'LCONST_1', 'FCONST_0', 'FCONST_1', 'FCONST_2',
'DCONST_0', 'DCONST_1', 'IALOAD', 'LALOAD', 'FALOAD',
'DALOAD', 'AALOAD', 'BALOAD', 'CALOAD', 'SALOAD', 'IASTORE',
'LASTORE', 'FASTORE', 'DASTORE', 'AASTORE', 'BASTORE',
'CASTORE', 'SASTORE', 'POP', 'POP2', 'DUP', 'DUP_X1',
'DUP_X2', 'DUP2', 'DUP2_X1', 'DUP2_X2', 'SWAP', 'IADD',
'LADD', 'FADD', 'DADD', 'ISUB', 'LSUB', 'FSUB', 'DSUB',
'IMUL', 'LMUL', 'FMUL', 'DMUL', 'IDIV', 'LDIV', 'FDIV',
'DDIV', 'IREM', 'LREM', 'FREM', 'DREM', 'INEG', 'LNEG',
'FNEG', 'DNEG', 'ISHL', 'LSHL', 'ISHR', 'LSHR', 'IUSHR',
'LUSHR', 'IAND', 'LAND', 'IOR', 'LOR', 'IXOR', 'LXOR',
'I2L', 'I2F', 'I2D', 'L2I', 'L2F', 'L2D', 'F2I', 'F2L',
'F2D', 'D2I', 'D2L', 'D2F', 'I2B', 'I2C', 'I2S', 'LCMP',
'FCMPL', 'FCMPG', 'DCMPL', 'DCMPG', 'IRETURN', 'LRETURN',
'FRETURN', 'DRETURN', 'ARETURN', 'RETURN', 'ARRAYLENGTH',
'ATHROW', 'MONITORENTER', 'MONITOREXIT']:
m.code.append('visitInsn(Opcodes.%s)' % name)
elif name in ['BIPUSH', 'SIPUSH']:
m.code.append('visitIntInsn(Opcodes.%s, %d)' % args[0])
elif 'LDC' in name:
t, v = cpool.get_const(args[0])
const = cpool.deref_const(args[0])
if t == javatools.CONST_String:
m.code.append('visitLdcInsn("%s")' % const)
elif t == javatools.CONST_Long:
m.code.append('visitLdcInsn(%sL)' % const)
elif t == javatools.CONST_Double:
m.code.append('visitLdcInsn(%sd)' % const)
else: # TODO
m.code.append('visitLdcInsn(%s)' % const)
elif name[1:-2] in ['LOAD', 'STORE']:
m.code.append('visitVarInsn(Opcodes.%s, %s)' % (name[:-2], name[-1]))
elif name in ['GETFIELD', 'PUTFIELD', 'GETSTATIC', 'PUTSTATIC']:
field = cpool.deref_const(args[0])
m.code.append('visitFieldInsn(Opcodes.%s, "%s", "%s", "%s")' % (name,
field[0], field[1][0], field[1][1]))
elif 'INVOKE' in name:
target = cpool.deref_const(args[0])
m.code.append('visitMethodInsn(Opcodes.%s, "%s", "%s", "%s")' % (name,
target[0], target[1][0], target[1][1]))
elif name in ['NEW', 'ANEWARRAY', 'CHECKCAST', 'INSTANCEOF']:
t = cpool.deref_const(args[0])
m.code.append('visitTypeInsn(Opcodes.%s, "%s")' % (name, t))
else:
raise Exception('unhandled opcode ' + name)
return m
if __name__ == '__main__':
import sys
translator = Translator()
for arg in sys.argv:
jci = javatools.unpack_class(open(sys.argv[1]))
translator.handle_class(jci)
import codecs
with codecs.open('ClassAdapterFactory.java', encoding='utf-8', mode='w') as f:
f.write(translator.java_code())