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slicc: better error messages when the python parser fails

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This commit is contained in:
Nathan Binkert 2009-08-04 09:37:27 -07:00
parent f5c21eaa1a
commit bd7af84d5e
1 changed files with 11 additions and 4 deletions
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15
src/mem/slicc/parser/parser.py
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@ -100,8 +100,15 @@ t_SEMICOLON = r';'
t_ASSIGN = r':=' t_ASSIGN = r':='
t_DOT = r'\.' t_DOT = r'\.'
class TokenError(Exception): pass class TokenError(Exception):
class ParseError(Exception): pass def __init__(self, msg, t):
super(TokenError, self).__init__(msg)
self.token = t
class ParseError(Exception):
def __init__(self, msg, t):
super(ParseError, self).__init__(msg)
self.token = t
def t_error(t): def t_error(t):
raise TokenError("Illegal character", t) raise TokenError("Illegal character", t)
@ -157,7 +164,7 @@ def p_file(p):
p[0] = [ x for x in p[1] if x is not None ] p[0] = [ x for x in p[1] if x is not None ]
def p_error(t): def p_error(t):
raise ParseError(t) raise ParseError("Syntax error", t)
def p_empty(p): def p_empty(p):
"empty :" "empty :"
@ -544,7 +551,7 @@ def scan(filenames):
try: try:
results = yacc.parse(file(filename, 'r').read()) results = yacc.parse(file(filename, 'r').read())
except (TokenError, ParseError), e: except (TokenError, ParseError), e:
raise type(e), tuple([filename] + [ i for i in e ]) sys.exit("%s: %s:%d" % (e, filename, e.token.lineno))
for result in results: for result in results:
result.add(hh, cc) result.add(hh, cc)