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
|
"""SCons.Tool.JavaCommon
Stuff for processing Java.
"""
#
# __COPYRIGHT__
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
import os
import os.path
import re
import string
java_parsing = 1
if java_parsing:
# Parse Java files for class names.
#
# This is a really cool parser from Charles Crain
# that finds appropriate class names in Java source.
# A regular expression that will find, in a java file:
# newlines;
# double-backslashes;
# a single-line comment "//";
# single or double quotes preceeded by a backslash;
# single quotes, double quotes, open or close braces, semi-colons;
# any alphanumeric token (keyword, class name, specifier);
# the multi-line comment begin and end tokens /* and */;
# array declarations "[]";
# semi-colons;
# periods.
_reToken = re.compile(r'(\n|\\\\|//|\\[\'"]|[\'"\{\}\;\.]|' +
r'[A-Za-z_][\w\.]*|/\*|\*/|\[\])')
class OuterState:
"""The initial state for parsing a Java file for classes,
interfaces, and anonymous inner classes."""
def __init__(self):
self.listClasses = []
self.listOutputs = []
self.stackBrackets = []
self.brackets = 0
self.nextAnon = 1
self.package = None
def trace(self):
pass
def __getClassState(self):
try:
return self.classState
except AttributeError:
ret = ClassState(self)
self.classState = ret
return ret
def __getPackageState(self):
try:
return self.packageState
except AttributeError:
ret = PackageState(self)
self.packageState = ret
return ret
def __getAnonClassState(self):
try:
return self.anonState
except AttributeError:
ret = SkipState(1, AnonClassState(self))
self.anonState = ret
return ret
def __getSkipState(self):
try:
return self.skipState
except AttributeError:
ret = SkipState(1, self)
self.skipState = ret
return ret
def openBracket(self):
self.brackets = self.brackets + 1
def closeBracket(self):
self.brackets = self.brackets - 1
if len(self.stackBrackets) and \
self.brackets == self.stackBrackets[-1]:
self.listOutputs.append(string.join(self.listClasses, '$'))
self.listClasses.pop()
self.stackBrackets.pop()
def parseToken(self, token):
if token[:2] == '//':
return IgnoreState('\n', self)
elif token == '/*':
return IgnoreState('*/', self)
elif token == '{':
self.openBracket()
elif token == '}':
self.closeBracket()
elif token in [ '"', "'" ]:
return IgnoreState(token, self)
elif token == "new":
# anonymous inner class
if len(self.listClasses) > 0:
return self.__getAnonClassState()
return self.__getSkipState() # Skip the class name
elif token in ['class', 'interface', 'enum']:
if len(self.listClasses) == 0:
self.nextAnon = 1
self.stackBrackets.append(self.brackets)
return self.__getClassState()
elif token == 'package':
return self.__getPackageState()
elif token == '.':
# Skip the attribute, it might be named "class", in which
# case we don't want to treat the following token as
# an inner class name...
return self.__getSkipState()
return self
def addAnonClass(self):
"""Add an anonymous inner class"""
clazz = self.listClasses[0]
self.listOutputs.append('%s$%d' % (clazz, self.nextAnon))
self.nextAnon = self.nextAnon + 1
def setPackage(self, package):
self.package = package
class AnonClassState:
"""A state that looks for anonymous inner classes."""
def __init__(self, outer_state):
# outer_state is always an instance of OuterState
self.outer_state = outer_state
self.tokens_to_find = 2
def parseToken(self, token):
# This is an anonymous class if and only if the next
# non-whitespace token is a bracket
if token == '\n':
return self
if token == '{':
self.outer_state.openBracket()
self.outer_state.addAnonClass()
elif token == '}':
self.outer_state.closeBracket()
elif token in ['"', "'"]:
return IgnoreState(token, self)
return self.outer_state
class SkipState:
"""A state that will skip a specified number of tokens before
reverting to the previous state."""
def __init__(self, tokens_to_skip, old_state):
self.tokens_to_skip = tokens_to_skip
self.old_state = old_state
def parseToken(self, token):
self.tokens_to_skip = self.tokens_to_skip - 1
if self.tokens_to_skip < 1:
return self.old_state
return self
class ClassState:
"""A state we go into when we hit a class or interface keyword."""
def __init__(self, outer_state):
# outer_state is always an instance of OuterState
self.outer_state = outer_state
def parseToken(self, token):
# the next non-whitespace token should be the name of the class
if token == '\n':
return self
self.outer_state.listClasses.append(token)
return self.outer_state
class IgnoreState:
"""A state that will ignore all tokens until it gets to a
specified token."""
def __init__(self, ignore_until, old_state):
self.ignore_until = ignore_until
self.old_state = old_state
def parseToken(self, token):
if self.ignore_until == token:
return self.old_state
return self
class PackageState:
"""The state we enter when we encounter the package keyword.
We assume the next token will be the package name."""
def __init__(self, outer_state):
# outer_state is always an instance of OuterState
self.outer_state = outer_state
def parseToken(self, token):
self.outer_state.setPackage(token)
return self.outer_state
def parse_java_file(fn):
return parse_java(open(fn, 'r').read())
def parse_java(contents, trace=None):
"""Parse a .java file and return a double of package directory,
plus a list of .class files that compiling that .java file will
produce"""
package = None
initial = OuterState()
currstate = initial
for token in _reToken.findall(contents):
# The regex produces a bunch of groups, but only one will
# have anything in it.
currstate = currstate.parseToken(token)
if trace: trace(token, currstate)
if initial.package:
package = string.replace(initial.package, '.', os.sep)
return (package, initial.listOutputs)
else:
# Don't actually parse Java files for class names.
#
# We might make this a configurable option in the future if
# Java-file parsing takes too long (although it shouldn't relative
# to how long the Java compiler itself seems to take...).
def parse_java_file(fn):
""" "Parse" a .java file.
This actually just splits the file name, so the assumption here
is that the file name matches the public class name, and that
the path to the file is the same as the package name.
"""
return os.path.split(file)
|