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"""gjson custom exceptions module."""
from typing import Any
class GJSONError(Exception):
"""Raised by the gjson module on error while performing queries or converting to JSON."""
class GJSONParseError(GJSONError):
"""Raised when there is an error parsing the query string, with nicer representation of the error."""
def __init__(self, *args: Any, query: str, position: int):
"""Initialize the exception with the additional data of the query part.
Arguments:
*args: all positional arguments like any regular exception.
query: the full query that generated the parse error.
position: the position in the query string where the parse error occurred.
"""
super().__init__(*args)
self.query = query
self.position = position
def __str__(self) -> str:
"""Return a custom representation of the error.
Returns:
the whole query string with a clear indication on where the error occurred.
"""
default = super().__str__()
line = '-' * (self.position + 7) # 7 is for the lenght of 'Query: '
return f'{default}\nQuery: {self.query}\n{line}^'
class GJSONInvalidSyntaxError(GJSONParseError):
"""Raised when there is a query with an invalid syntax."""
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