mirror of
https://github.com/thegeeklab/ansible-later.git
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91 lines
3.1 KiB
Python
91 lines
3.1 KiB
Python
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import sys
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import py
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BuiltinAssertionError = py.builtin.builtins.AssertionError
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_reprcompare = None # if set, will be called by assert reinterp for comparison ops
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def _format_explanation(explanation):
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"""This formats an explanation
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Normally all embedded newlines are escaped, however there are
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three exceptions: \n{, \n} and \n~. The first two are intended
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cover nested explanations, see function and attribute explanations
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for examples (.visit_Call(), visit_Attribute()). The last one is
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for when one explanation needs to span multiple lines, e.g. when
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displaying diffs.
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"""
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raw_lines = (explanation or '').split('\n')
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# escape newlines not followed by {, } and ~
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lines = [raw_lines[0]]
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for l in raw_lines[1:]:
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if l.startswith('{') or l.startswith('}') or l.startswith('~'):
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lines.append(l)
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else:
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lines[-1] += '\\n' + l
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result = lines[:1]
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stack = [0]
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stackcnt = [0]
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for line in lines[1:]:
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if line.startswith('{'):
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if stackcnt[-1]:
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s = 'and '
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else:
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s = 'where '
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stack.append(len(result))
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stackcnt[-1] += 1
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stackcnt.append(0)
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result.append(' +' + ' '*(len(stack)-1) + s + line[1:])
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elif line.startswith('}'):
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assert line.startswith('}')
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stack.pop()
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stackcnt.pop()
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result[stack[-1]] += line[1:]
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else:
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assert line.startswith('~')
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result.append(' '*len(stack) + line[1:])
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assert len(stack) == 1
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return '\n'.join(result)
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class AssertionError(BuiltinAssertionError):
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def __init__(self, *args):
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BuiltinAssertionError.__init__(self, *args)
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if args:
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try:
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self.msg = str(args[0])
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except py.builtin._sysex:
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raise
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except:
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self.msg = "<[broken __repr__] %s at %0xd>" %(
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args[0].__class__, id(args[0]))
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else:
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f = py.code.Frame(sys._getframe(1))
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try:
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source = f.code.fullsource
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if source is not None:
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try:
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source = source.getstatement(f.lineno, assertion=True)
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except IndexError:
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source = None
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else:
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source = str(source.deindent()).strip()
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except py.error.ENOENT:
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source = None
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# this can also occur during reinterpretation, when the
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# co_filename is set to "<run>".
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if source:
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self.msg = reinterpret(source, f, should_fail=True)
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else:
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self.msg = "<could not determine information>"
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if not self.args:
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self.args = (self.msg,)
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if sys.version_info > (3, 0):
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AssertionError.__module__ = "builtins"
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reinterpret_old = "old reinterpretation not available for py3"
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else:
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from py._code._assertionold import interpret as reinterpret_old
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from py._code._assertionnew import interpret as reinterpret
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