50 lines
1.5 KiB
Python
50 lines
1.5 KiB
Python
# Copyright 2018 the authors.
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# This file is part of Hy, which is free software licensed under the Expat
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# license. See the LICENSE.
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from hy.errors import HyError
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class LexException(HyError):
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"""Error during the Lexing of a Hython expression."""
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def __init__(self, message, lineno, colno, source=None):
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super(LexException, self).__init__(message)
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self.message = message
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self.lineno = lineno
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self.colno = colno
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self.source = source
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self.filename = '<stdin>'
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def __str__(self):
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from hy.errors import colored
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line = self.lineno
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start = self.colno
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result = ""
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source = self.source.split("\n")
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if line > 0 and start > 0:
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result += ' File "%s", line %d, column %d\n\n' % (self.filename,
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line,
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start)
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if len(self.source) > 0:
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source_line = source[line-1]
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else:
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source_line = ""
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result += ' %s\n' % colored.red(source_line)
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result += ' %s%s\n' % (' '*(start-1), colored.green('^'))
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result += colored.yellow("LexException: %s\n\n" % self.message)
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return result
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class PrematureEndOfInput(LexException):
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"""We got a premature end of input"""
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def __init__(self, message):
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super(PrematureEndOfInput, self).__init__(message, -1, -1)
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