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54 lines
1.7 KiB
Python
54 lines
1.7 KiB
Python
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"""Error classes used by simplejson
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"""
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__all__ = ['JSONDecodeError']
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def linecol(doc, pos):
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lineno = doc.count('\n', 0, pos) + 1
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if lineno == 1:
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colno = pos + 1
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else:
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colno = pos - doc.rindex('\n', 0, pos)
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return lineno, colno
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def errmsg(msg, doc, pos, end=None):
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lineno, colno = linecol(doc, pos)
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msg = msg.replace('%r', repr(doc[pos:pos + 1]))
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if end is None:
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fmt = '%s: line %d column %d (char %d)'
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return fmt % (msg, lineno, colno, pos)
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endlineno, endcolno = linecol(doc, end)
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fmt = '%s: line %d column %d - line %d column %d (char %d - %d)'
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return fmt % (msg, lineno, colno, endlineno, endcolno, pos, end)
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class JSONDecodeError(ValueError):
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"""Subclass of ValueError with the following additional properties:
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msg: The unformatted error message
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doc: The JSON document being parsed
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pos: The start index of doc where parsing failed
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end: The end index of doc where parsing failed (may be None)
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lineno: The line corresponding to pos
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colno: The column corresponding to pos
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endlineno: The line corresponding to end (may be None)
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endcolno: The column corresponding to end (may be None)
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"""
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# Note that this exception is used from _speedups
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def __init__(self, msg, doc, pos, end=None):
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ValueError.__init__(self, errmsg(msg, doc, pos, end=end))
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self.msg = msg
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self.doc = doc
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self.pos = pos
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self.end = end
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self.lineno, self.colno = linecol(doc, pos)
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if end is not None:
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self.endlineno, self.endcolno = linecol(doc, end)
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else:
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self.endlineno, self.endcolno = None, None
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def __reduce__(self):
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return self.__class__, (self.msg, self.doc, self.pos, self.end)
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