Source code for cocotb.result

# Copyright (c) 2013 Potential Ventures Ltd
# Copyright (c) 2013 SolarFlare Communications Inc
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# TODO: Could use cStringIO?
import traceback
import sys
# from StringIO import StringIO
from io import StringIO, BytesIO

"""Exceptions and functions for simulation result handling."""

[docs]def raise_error(obj, msg): """Creates a :exc:`TestError` exception and raises it after printing a traceback. Args: obj: Object with a log method. msg (str): The log message. """ exc_info = sys.exc_info() # 2.6 cannot use named access if sys.version_info[0] >= 3: buff = StringIO() traceback.print_exception(*exc_info, file=buff) else: buff_bytes = BytesIO() traceback.print_exception(*exc_info, file=buff_bytes) buff = StringIO(buff_bytes.getvalue().decode("UTF-8")) obj.log.error("%s\n%s" % (msg, buff.getvalue())) exception = TestError(msg) exception.stderr.write(buff.getvalue()) raise exception
[docs]def create_error(obj, msg): """Like :func:`raise_error`, but return the exception rather than raise it, simply to avoid too many levels of nested `try/except` blocks. Args: obj: Object with a log method. msg (str): The log message. """ try: raise_error(obj, msg) except TestError as error: return error return TestError("Creating error traceback failed")
[docs]class ReturnValue(Exception): """Helper exception needed for Python versions prior to 3.3.""" def __init__(self, retval): self.retval = retval
[docs]class TestComplete(Exception): """Exception showing that test was completed. Sub-exceptions detail the exit status.""" def __init__(self, *args, **kwargs): super(TestComplete, self).__init__(*args, **kwargs) self.stdout = StringIO() self.stderr = StringIO()
[docs]class ExternalException(Exception): """Exception thrown by external functions.""" def __init__(self, exception): self.exception = exception
[docs]class TestError(TestComplete): """Exception showing that test was completed with severity Error.""" pass
[docs]class TestFailure(TestComplete): """Exception showing that test was completed with severity Failure.""" pass
[docs]class TestSuccess(TestComplete): """Exception showing that test was completed successfully.""" pass
[docs]class SimFailure(TestComplete): """Exception showing that simulator exited unsuccessfully.""" pass