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
|
"""SCons.Scanner.C
This module implements the depenency scanner for C/C++ code.
"""
#
# Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 The SCons Foundation
#
# 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__ = "src/engine/SCons/Scanner/C.py 4720 2010/03/24 03:14:11 jars"
import SCons.Node.FS
import SCons.Scanner
import SCons.Util
import SCons.cpp
class SConsCPPScanner(SCons.cpp.PreProcessor):
"""
SCons-specific subclass of the cpp.py module's processing.
We subclass this so that: 1) we can deal with files represented
by Nodes, not strings; 2) we can keep track of the files that are
missing.
"""
def __init__(self, *args, **kw):
apply(SCons.cpp.PreProcessor.__init__, (self,)+args, kw)
self.missing = []
def initialize_result(self, fname):
self.result = SCons.Util.UniqueList([fname])
def finalize_result(self, fname):
return self.result[1:]
def find_include_file(self, t):
keyword, quote, fname = t
result = SCons.Node.FS.find_file(fname, self.searchpath[quote])
if not result:
self.missing.append((fname, self.current_file))
return result
def read_file(self, file):
try:
fp = open(str(file.rfile()))
except EnvironmentError, e:
self.missing.append((file, self.current_file))
return ''
else:
return fp.read()
def dictify_CPPDEFINES(env):
cppdefines = env.get('CPPDEFINES', {})
if cppdefines is None:
return {}
if SCons.Util.is_Sequence(cppdefines):
result = {}
for c in cppdefines:
if SCons.Util.is_Sequence(c):
result[c[0]] = c[1]
else:
result[c] = None
return result
if not SCons.Util.is_Dict(cppdefines):
return {cppdefines : None}
return cppdefines
class SConsCPPScannerWrapper:
"""
The SCons wrapper around a cpp.py scanner.
This is the actual glue between the calling conventions of generic
SCons scanners, and the (subclass of) cpp.py class that knows how
to look for #include lines with reasonably real C-preprocessor-like
evaluation of #if/#ifdef/#else/#elif lines.
"""
def __init__(self, name, variable):
self.name = name
self.path = SCons.Scanner.FindPathDirs(variable)
def __call__(self, node, env, path = ()):
cpp = SConsCPPScanner(current = node.get_dir(),
cpppath = path,
dict = dictify_CPPDEFINES(env))
result = cpp(node)
for included, includer in cpp.missing:
fmt = "No dependency generated for file: %s (included from: %s) -- file not found"
SCons.Warnings.warn(SCons.Warnings.DependencyWarning,
fmt % (included, includer))
return result
def recurse_nodes(self, nodes):
return nodes
def select(self, node):
return self
def CScanner():
"""Return a prototype Scanner instance for scanning source files
that use the C pre-processor"""
# Here's how we would (or might) use the CPP scanner code above that
# knows how to evaluate #if/#ifdef/#else/#elif lines when searching
# for #includes. This is commented out for now until we add the
# right configurability to let users pick between the scanners.
#return SConsCPPScannerWrapper("CScanner", "CPPPATH")
cs = SCons.Scanner.ClassicCPP("CScanner",
"$CPPSUFFIXES",
"CPPPATH",
'^[ \t]*#[ \t]*(?:include|import)[ \t]*(<|")([^>"]+)(>|")')
return cs
# Local Variables:
# tab-width:4
# indent-tabs-mode:nil
# End:
# vim: set expandtab tabstop=4 shiftwidth=4:
|
