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'''Value holder class with line and column information'''
class ValueWithTrace:
'''Represents a value from a configuration file along with its metadata.
This class is used to associate a value from a YAML or JSON file with its
source, line number, and column number. It is particularly useful for
debugging and error reporting, as it provides precise location information
for the value in the original configuration file.
Attributes:
value (Any): The value extracted from the configuration file.
src (str): The source of the configuration file.
line (int): The line number of the value in the source.
column (int): The column number of the value in the source.
'''
def __init__(self, value, source, line, column):
self.value = value
self.source = source
self.line = line
self.column = column
@staticmethod
def from_yaml_event(value, source, event):
'''Constructs a `ValueWithTrace` from a YAML event object.'''
return ValueWithTrace(value, source,
event.start_mark.line + 1, event.start_mark.column + 1)
def get_position_string(self):
'''Return a string describing the position of the value.'''
return f'line {self.line}, column {self.column}'
def __hash__(self):
return hash(self.value)
def __eq__(self, other):
return self.value == other
def __repr__(self):
return f'{self.value!r}'
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