slicc: better error messages when the python parser fails
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parent
f5c21eaa1a
commit
bd7af84d5e
1 changed files with 11 additions and 4 deletions
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@ -100,8 +100,15 @@ t_SEMICOLON = r';'
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t_ASSIGN = r':='
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t_DOT = r'\.'
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class TokenError(Exception): pass
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class ParseError(Exception): pass
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class TokenError(Exception):
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def __init__(self, msg, t):
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super(TokenError, self).__init__(msg)
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self.token = t
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class ParseError(Exception):
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def __init__(self, msg, t):
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super(ParseError, self).__init__(msg)
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self.token = t
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def t_error(t):
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raise TokenError("Illegal character", t)
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@ -157,7 +164,7 @@ def p_file(p):
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p[0] = [ x for x in p[1] if x is not None ]
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def p_error(t):
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raise ParseError(t)
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raise ParseError("Syntax error", t)
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def p_empty(p):
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"empty :"
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@ -544,7 +551,7 @@ def scan(filenames):
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try:
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results = yacc.parse(file(filename, 'r').read())
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except (TokenError, ParseError), e:
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raise type(e), tuple([filename] + [ i for i in e ])
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sys.exit("%s: %s:%d" % (e, filename, e.token.lineno))
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for result in results:
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result.add(hh, cc)
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