Squashed 'yocto-poky/' content from commit ea562de
git-subtree-dir: yocto-poky
git-subtree-split: ea562de57590c966cd5a75fda8defecd397e6436
diff --git a/bitbake/lib/bb/exceptions.py b/bitbake/lib/bb/exceptions.py
new file mode 100644
index 0000000..f182c8f
--- /dev/null
+++ b/bitbake/lib/bb/exceptions.py
@@ -0,0 +1,91 @@
+from __future__ import absolute_import
+import inspect
+import traceback
+import bb.namedtuple_with_abc
+from collections import namedtuple
+
+
+class TracebackEntry(namedtuple.abc):
+ """Pickleable representation of a traceback entry"""
+ _fields = 'filename lineno function args code_context index'
+ _header = ' File "{0.filename}", line {0.lineno}, in {0.function}{0.args}'
+
+ def format(self, formatter=None):
+ if not self.code_context:
+ return self._header.format(self) + '\n'
+
+ formatted = [self._header.format(self) + ':\n']
+
+ for lineindex, line in enumerate(self.code_context):
+ if formatter:
+ line = formatter(line)
+
+ if lineindex == self.index:
+ formatted.append(' >%s' % line)
+ else:
+ formatted.append(' %s' % line)
+ return formatted
+
+ def __str__(self):
+ return ''.join(self.format())
+
+def _get_frame_args(frame):
+ """Get the formatted arguments and class (if available) for a frame"""
+ arginfo = inspect.getargvalues(frame)
+
+ try:
+ if not arginfo.args:
+ return '', None
+ # There have been reports from the field of python 2.6 which doesn't
+ # return a namedtuple here but simply a tuple so fallback gracefully if
+ # args isn't present.
+ except AttributeError:
+ return '', None
+
+ firstarg = arginfo.args[0]
+ if firstarg == 'self':
+ self = arginfo.locals['self']
+ cls = self.__class__.__name__
+
+ arginfo.args.pop(0)
+ del arginfo.locals['self']
+ else:
+ cls = None
+
+ formatted = inspect.formatargvalues(*arginfo)
+ return formatted, cls
+
+def extract_traceback(tb, context=1):
+ frames = inspect.getinnerframes(tb, context)
+ for frame, filename, lineno, function, code_context, index in frames:
+ formatted_args, cls = _get_frame_args(frame)
+ if cls:
+ function = '%s.%s' % (cls, function)
+ yield TracebackEntry(filename, lineno, function, formatted_args,
+ code_context, index)
+
+def format_extracted(extracted, formatter=None, limit=None):
+ if limit:
+ extracted = extracted[-limit:]
+
+ formatted = []
+ for tracebackinfo in extracted:
+ formatted.extend(tracebackinfo.format(formatter))
+ return formatted
+
+
+def format_exception(etype, value, tb, context=1, limit=None, formatter=None):
+ formatted = ['Traceback (most recent call last):\n']
+
+ if hasattr(tb, 'tb_next'):
+ tb = extract_traceback(tb, context)
+
+ formatted.extend(format_extracted(tb, formatter, limit))
+ formatted.extend(traceback.format_exception_only(etype, value))
+ return formatted
+
+def to_string(exc):
+ if isinstance(exc, SystemExit):
+ if not isinstance(exc.code, basestring):
+ return 'Exited with "%d"' % exc.code
+ return str(exc)