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Side by Side Diff: scons-2.0.1/engine/SCons/Errors.py

Issue 6711079: Added an unmodified copy of SCons to third_party. (Closed) Base URL: svn://svn.chromium.org/native_client/trunk/src/third_party/
Patch Set: '' Created 9 years, 9 months ago
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1 #
2 # Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 The S Cons Foundation
3 #
4 # Permission is hereby granted, free of charge, to any person obtaining
5 # a copy of this software and associated documentation files (the
6 # "Software"), to deal in the Software without restriction, including
7 # without limitation the rights to use, copy, modify, merge, publish,
8 # distribute, sublicense, and/or sell copies of the Software, and to
9 # permit persons to whom the Software is furnished to do so, subject to
10 # the following conditions:
11 #
12 # The above copyright notice and this permission notice shall be included
13 # in all copies or substantial portions of the Software.
14 #
15 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
16 # KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
17 # WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
19 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
20 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
21 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
22 #
23
24 """SCons.Errors
25
26 This file contains the exception classes used to handle internal
27 and user errors in SCons.
28
29 """
30
31 __revision__ = "src/engine/SCons/Errors.py 5134 2010/08/16 23:02:40 bdeegan"
32
33 import SCons.Util
34
35 import exceptions
36
37 class BuildError(Exception):
38 """ Errors occuring while building.
39
40 BuildError have the following attributes:
41
42 Information about the cause of the build error:
43 -----------------------------------------------
44
45 errstr : a description of the error message
46
47 status : the return code of the action that caused the build
48 error. Must be set to a non-zero value even if the
49 build error is not due to an action returning a
50 non-zero returned code.
51
52 exitstatus : SCons exit status due to this build error.
53 Must be nonzero unless due to an explicit Exit()
54 call. Not always the same as status, since
55 actions return a status code that should be
56 respected, but SCons typically exits with 2
57 irrespective of the return value of the failed
58 action.
59
60 filename : The name of the file or directory that caused the
61 build error. Set to None if no files are associated with
62 this error. This might be different from the target
63 being built. For example, failure to create the
64 directory in which the target file will appear. It
65 can be None if the error is not due to a particular
66 filename.
67
68 exc_info : Info about exception that caused the build
69 error. Set to (None, None, None) if this build
70 error is not due to an exception.
71
72
73 Information about the cause of the location of the error:
74 ---------------------------------------------------------
75
76 node : the error occured while building this target node(s)
77
78 executor : the executor that caused the build to fail (might
79 be None if the build failures is not due to the
80 executor failing)
81
82 action : the action that caused the build to fail (might be
83 None if the build failures is not due to the an
84 action failure)
85
86 command : the command line for the action that caused the
87 build to fail (might be None if the build failures
88 is not due to the an action failure)
89 """
90
91 def __init__(self,
92 node=None, errstr="Unknown error", status=2, exitstatus=2,
93 filename=None, executor=None, action=None, command=None,
94 exc_info=(None, None, None)):
95
96 self.errstr = errstr
97 self.status = status
98 self.exitstatus = exitstatus
99 self.filename = filename
100 self.exc_info = exc_info
101
102 self.node = node
103 self.executor = executor
104 self.action = action
105 self.command = command
106
107 Exception.__init__(self, node, errstr, status, exitstatus, filename,
108 executor, action, command, exc_info)
109
110 def __str__(self):
111 if self.filename:
112 return self.filename + ': ' + self.errstr
113 else:
114 return self.errstr
115
116 class InternalError(Exception):
117 pass
118
119 class UserError(Exception):
120 pass
121
122 class StopError(Exception):
123 pass
124
125 class EnvironmentError(Exception):
126 pass
127
128 class MSVCError(IOError):
129 pass
130
131 class ExplicitExit(Exception):
132 def __init__(self, node=None, status=None, *args):
133 self.node = node
134 self.status = status
135 self.exitstatus = status
136 Exception.__init__(self, *args)
137
138 def convert_to_BuildError(status, exc_info=None):
139 """
140 Convert any return code a BuildError Exception.
141
142 `status' can either be a return code or an Exception.
143 The buildError.status we set here will normally be
144 used as the exit status of the "scons" process.
145 """
146 if not exc_info and isinstance(status, Exception):
147 exc_info = (status.__class__, status, None)
148
149 if isinstance(status, BuildError):
150 buildError = status
151 buildError.exitstatus = 2 # always exit with 2 on build errors
152 elif isinstance(status, ExplicitExit):
153 status = status.status
154 errstr = 'Explicit exit, status %s' % status
155 buildError = BuildError(
156 errstr=errstr,
157 status=status, # might be 0, OK here
158 exitstatus=status, # might be 0, OK here
159 exc_info=exc_info)
160 elif isinstance(status, (StopError, UserError)):
161 buildError = BuildError(
162 errstr=str(status),
163 status=2,
164 exitstatus=2,
165 exc_info=exc_info)
166 elif isinstance(status, exceptions.EnvironmentError):
167 # If an IOError/OSError happens, raise a BuildError.
168 # Report the name of the file or directory that caused the
169 # error, which might be different from the target being built
170 # (for example, failure to create the directory in which the
171 # target file will appear).
172 try: filename = status.filename
173 except AttributeError: filename = None
174 buildError = BuildError(
175 errstr=status.strerror,
176 status=status.errno,
177 exitstatus=2,
178 filename=filename,
179 exc_info=exc_info)
180 elif isinstance(status, Exception):
181 buildError = BuildError(
182 errstr='%s : %s' % (status.__class__.__name__, status),
183 status=2,
184 exitstatus=2,
185 exc_info=exc_info)
186 elif SCons.Util.is_String(status):
187 buildError = BuildError(
188 errstr=status,
189 status=2,
190 exitstatus=2)
191 else:
192 buildError = BuildError(
193 errstr="Error %s" % status,
194 status=status,
195 exitstatus=2)
196
197 #import sys
198 #sys.stderr.write("convert_to_BuildError: status %s => (errstr %s, status %s )"%(status,buildError.errstr, buildError.status))
199 return buildError
200
201 # Local Variables:
202 # tab-width:4
203 # indent-tabs-mode:nil
204 # End:
205 # vim: set expandtab tabstop=4 shiftwidth=4:
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