56 lines
1.8 KiB
Python
56 lines
1.8 KiB
Python
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# DExTer : Debugging Experience Tester
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# ~~~~~~ ~ ~~ ~ ~~
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#
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# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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# See https://llvm.org/LICENSE.txt for license information.
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# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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from dex.command.CommandBase import CommandBase
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from dex.dextIR import ValueIR
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class DexUnreachable(CommandBase):
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"""Expect the source line this is found on will never be stepped on to.
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DexUnreachable()
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See Commands.md for more info.
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"""
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def __init__(self, *args, **kwargs):
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if len(args) != 0:
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raise TypeError("DexUnreachable takes no positional arguments")
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if "on_line" in kwargs:
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on_line = kwargs.pop("on_line")
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self._from_line = on_line
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self._to_line = on_line
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elif "from_line" in kwargs and "to_line" in kwargs:
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self._from_line = kwargs.pop("from_line")
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self._to_line = kwargs.pop("to_line")
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elif "from_line" in kwargs or "to_line" in kwargs:
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raise TypeError("Must provide both from_line and to_line to DexUnreachable")
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if len(kwargs) > 0:
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raise TypeError("Unexpected kwargs {}".format(kwargs.keys()))
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super(DexUnreachable, self).__init__()
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pass
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@staticmethod
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def get_name():
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return __class__.__name__
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def eval(self, step_info):
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# If we're ever called, at all, then we're evaluating a line that has
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# been marked as unreachable. Which means a failure.
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vir = ValueIR(
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expression="Unreachable",
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value="True",
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type_name=None,
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error_string=None,
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could_evaluate=True,
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is_optimized_away=True,
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is_irretrievable=False,
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)
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return {"DexUnreachable": vir}
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