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Viewing changes to waflib/Errors.py

  • Committer: Ulrik Sverdrup
  • Date: 2012-02-26 17:32:06 UTC
  • mto: This revision was merged to the branch mainline in revision 2918.
  • Revision ID: git-v1:684a1e79e28fa3d9e346bdf2c1659e7d2c6e7718
Add waf-light and waflib from waf-1.6.11

http://code.google.com/p/waf/
Acquired from: http://waf.googlecode.com/files/waf-1.6.11.tar.bz2

"""
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:

1. Redistributions of source code must retain the above copyright
   notice, this list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright
   notice, this list of conditions and the following disclaimer in the
   documentation and/or other materials provided with the distribution.

3. The name of the author may not be used to endorse or promote products
   derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
"""

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waflib/Errors.py
 
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#!/usr/bin/env python
 
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# encoding: utf-8
 
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# Thomas Nagy, 2010 (ita)
 
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"""
 
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Exceptions used in the Waf code
 
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"""
 
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import traceback, sys
 
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class WafError(Exception):
 
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        """Base class for all Waf errors"""
 
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        def __init__(self, msg='', ex=None):
 
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                """
 
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                :param msg: error message
 
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                :type msg: string
 
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                :param ex: exception causing this error (optional)
 
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                :type ex: exception
 
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                """
 
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                self.msg = msg
 
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                assert not isinstance(msg, Exception)
 
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                self.stack = []
 
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                if ex:
 
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                        if not msg:
 
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                                self.msg = str(ex)
 
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                        if isinstance(ex, WafError):
 
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                                self.stack = ex.stack
 
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                        else:
 
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                                self.stack = traceback.extract_tb(sys.exc_info()[2])
 
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                self.stack += traceback.extract_stack()[:-1]
 
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                self.verbose_msg = ''.join(traceback.format_list(self.stack))
 
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        def __str__(self):
 
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                return str(self.msg)
 
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class BuildError(WafError):
 
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        """
 
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        Errors raised during the build and install phases
 
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        """
 
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        def __init__(self, error_tasks=[]):
 
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                """
 
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                :param error_tasks: tasks that could not complete normally
 
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                :type error_tasks: list of task objects
 
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                """
 
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                self.tasks = error_tasks
 
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                WafError.__init__(self, self.format_error())
 
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        def format_error(self):
 
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                """format the error messages from the tasks that failed"""
 
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                lst = ['Build failed']
 
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                for tsk in self.tasks:
 
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                        txt = tsk.format_error()
 
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                        if txt: lst.append(txt)
 
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                return '\n'.join(lst)
 
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class ConfigurationError(WafError):
 
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        """
 
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        Configuration exception raised in particular by :py:meth:`waflib.Context.Context.fatal`
 
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        """
 
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        pass
 
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class TaskRescan(WafError):
 
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        """task-specific exception type, trigger a signature recomputation"""
 
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        pass
 
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class TaskNotReady(WafError):
 
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        """task-specific exception type, raised when the task signature cannot be computed"""
 
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        pass
 
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