1324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruverimport antlr3
2324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruverimport testbase
3324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruverimport unittest
4324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
5324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruverclass t009lexer(testbase.ANTLRTest):
6324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver    def setUp(self):
7324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        self.compileGrammar()
8324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
9324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
10324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver    def lexerClass(self, base):
11324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        class TLexer(base):
12324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver            def emitErrorMessage(self, msg):
13324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver                # report errors to /dev/null
14324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver                pass
15324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
16324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver            def reportError(self, re):
17324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver                # no error recovery yet, just crash!
18324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver                raise re
19324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
20324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        return TLexer
21324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
22324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
23324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver    def testValid(self):
24324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        stream = antlr3.StringStream('085')
25324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        lexer = self.getLexer(stream)
26324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
27324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        token = lexer.nextToken()
28324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.type == self.lexerModule.DIGIT
29324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.start == 0, token.start
30324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.stop == 0, token.stop
31324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.text == '0', token.text
32324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
33324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        token = lexer.nextToken()
34324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.type == self.lexerModule.DIGIT
35324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.start == 1, token.start
36324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.stop == 1, token.stop
37324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.text == '8', token.text
38324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
39324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        token = lexer.nextToken()
40324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.type == self.lexerModule.DIGIT
41324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.start == 2, token.start
42324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.stop == 2, token.stop
43324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.text == '5', token.text
44324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
45324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        token = lexer.nextToken()
46324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.type == self.lexerModule.EOF
47324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
48324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
49324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver    def testMalformedInput(self):
50324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        stream = antlr3.StringStream('2a')
51324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        lexer = self.getLexer(stream)
52324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
53324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        lexer.nextToken()
54324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        try:
55324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver            token = lexer.nextToken()
56324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver            raise AssertionError, token
57324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
58324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        except antlr3.MismatchedSetException, exc:
59324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver            # TODO: This should provide more useful information
60324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver            assert exc.expecting is None
61324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver            assert exc.unexpectedType == 'a', repr(exc.unexpectedType)
62324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver            assert exc.charPositionInLine == 1, repr(exc.charPositionInLine)
63324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver            assert exc.line == 1, repr(exc.line)
64324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
65324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
66324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruverif __name__ == '__main__':
67324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver    unittest.main()
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