117 lines
4.4 KiB
Python
117 lines
4.4 KiB
Python
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import gdb.printing
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import os
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def synthesise_gdb_value_from_string(s):
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'''For when you want to return a synthetic string from children()'''
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return gdb.Value(s + '\0').cast(gdb.lookup_type('char').pointer())
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class OutcomeBasicOutcomePrinter(object):
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'''Print an outcome::basic_outcome<T> and outcome::basic_result<T>'''
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def __init__(self, val):
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self.val = val
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def children(self):
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if self.val['_state']['_status']['status_value'] & 1 == 1:
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yield ('value', self.val['_state']['_value'])
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if self.val['_state']['_status']['status_value'] & 2 == 2:
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yield ('error', self.val['_state']['_error'])
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if self.val['_state']['_status']['status_value'] & 4 == 4:
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yield ('exception', self.val['_ptr'])
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def display_hint(self):
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return None
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def to_string(self):
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if self.val['_state']['_status']['status_value'] & 54 == 54:
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return 'errored (errno, moved from) + exceptioned'
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if self.val['_state']['_status']['status_value'] & 50 == 50:
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return 'errored (errno, moved from)'
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if self.val['_state']['_status']['status_value'] & 38 == 38:
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return 'errored + exceptioned (moved from)'
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if self.val['_state']['_status']['status_value'] & 36 == 36:
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return 'exceptioned (moved from)'
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if self.val['_state']['_status']['status_value'] & 35 == 35:
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return 'errored (moved from)'
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if self.val['_state']['_status']['status_value'] & 33 == 33:
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return 'valued (moved from)'
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if self.val['_state']['_status']['status_value'] & 22 == 22:
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return 'errored (errno) + exceptioned'
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if self.val['_state']['_status']['status_value'] & 18 == 18:
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return 'errored (errno)'
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if self.val['_state']['_status']['status_value'] & 6 == 6:
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return 'errored + exceptioned'
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if self.val['_state']['_status']['status_value'] & 4 == 4:
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return 'exceptioned'
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if self.val['_state']['_status']['status_value'] & 2 == 2:
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return 'errored'
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if self.val['_state']['_status']['status_value'] & 1 == 1:
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return 'valued'
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if self.val['_state']['_status']['status_value'] & 0xff == 0:
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return 'empty'
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class OutcomeCResultStatusPrinter(object):
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'''Print a C result'''
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def __init__(self, val):
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self.val = val
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def children(self):
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if self.val['flags'] & 1 == 1:
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yield ('value', self.val['value'])
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if self.val['flags'] & 2 == 2:
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yield ('error', self.val['error'])
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def display_hint(self):
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return None
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def to_string(self):
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if self.val['flags'] & 50 == 50:
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return 'errored (errno, moved from)'
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if self.val['flags'] & 35 == 35:
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return 'errored (moved from)'
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if self.val['flags'] & 33 == 33:
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return 'valued (moved from)'
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if self.val['flags'] & 18 == 18:
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return 'errored (errno)'
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if self.val['flags'] & 2 == 2:
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return 'errored'
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if self.val['flags'] & 1 == 1:
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return 'valued'
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if self.val['flags'] & 0xff == 0:
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return 'empty'
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class OutcomeCStatusCodePrinter(object):
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'''Print a C status code'''
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def __init__(self, val):
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self.val = val
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def children(self):
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yield ('domain', self.val['domain'])
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yield ('value', self.val['value'])
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def display_hint(self):
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return None
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def to_string(self):
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s = str(self.val['domain'])
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if 'posix_code_domain' in s or 'generic_code_domain' in s:
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return str(self.val['value']) + ' (' + os.strerror(int(self.val['value'])) + ')'
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else:
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return self.val['value']
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def build_pretty_printer():
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pp = gdb.printing.RegexpCollectionPrettyPrinter('outcome_v2')
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pp.add_printer('outcome_v2::basic_result', '^(boost::)?outcome_v2[_0-9a-f]*::basic_result<.*>$', OutcomeBasicOutcomePrinter)
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pp.add_printer('outcome_v2::basic_outcome', '^(boost::)?outcome_v2[_0-9a-f]*::basic_outcome<.*>$', OutcomeBasicOutcomePrinter)
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pp.add_printer('cxx_result_status_code_*', '^cxx_result_status_code_.*$', OutcomeCResultStatusPrinter)
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pp.add_printer('cxx_status_code_*', '^cxx_status_code_.*$', OutcomeCStatusCodePrinter)
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return pp
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def register_printers(obj = None):
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gdb.printing.register_pretty_printer(obj, build_pretty_printer(), replace = True)
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register_printers(gdb.current_objfile())
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