| | """JSON token scanner |
| | """ |
| | import re |
| |
|
| | __all__ = ['HjsonDecodeError'] |
| |
|
| | class HjsonDecodeError(ValueError): |
| | """Subclass of ValueError with the following additional properties: |
| | |
| | msg: The unformatted error message |
| | doc: The JSON document being parsed |
| | pos: The start index of doc where parsing failed |
| | end: The end index of doc where parsing failed (may be None) |
| | lineno: The line corresponding to pos |
| | colno: The column corresponding to pos |
| | endlineno: The line corresponding to end (may be None) |
| | endcolno: The column corresponding to end (may be None) |
| | |
| | """ |
| | |
| | def __init__(self, msg, doc, pos, end=None): |
| | ValueError.__init__(self, errmsg(msg, doc, pos, end=end)) |
| | self.msg = msg |
| | self.doc = doc |
| | self.pos = pos |
| | self.end = end |
| | self.lineno, self.colno = linecol(doc, pos) |
| | if end is not None: |
| | self.endlineno, self.endcolno = linecol(doc, end) |
| | else: |
| | self.endlineno, self.endcolno = None, None |
| |
|
| | def __reduce__(self): |
| | return self.__class__, (self.msg, self.doc, self.pos, self.end) |
| |
|
| |
|
| | def linecol(doc, pos): |
| | lineno = doc.count('\n', 0, pos) + 1 |
| | if lineno == 1: |
| | colno = pos + 1 |
| | else: |
| | colno = pos - doc.rindex('\n', 0, pos) |
| | return lineno, colno |
| |
|
| |
|
| | def errmsg(msg, doc, pos, end=None): |
| | lineno, colno = linecol(doc, pos) |
| | msg = msg.replace('%r', repr(doc[pos:pos + 1])) |
| | if end is None: |
| | fmt = '%s: line %d column %d (char %d)' |
| | return fmt % (msg, lineno, colno, pos) |
| | endlineno, endcolno = linecol(doc, end) |
| | fmt = '%s: line %d column %d - line %d column %d (char %d - %d)' |
| | return fmt % (msg, lineno, colno, endlineno, endcolno, pos, end) |
| |
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| |
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| |
|
