1324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruverimport antlr3
2324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruverimport testbase
3324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruverimport unittest
4324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
5324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruverclass t011lexer(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('foobar _Ab98 \n A12sdf')
25324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        lexer = self.getLexer(stream)
26324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
27324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        token = lexer.nextToken()
28324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.type == self.lexerModule.IDENTIFIER
29324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.start == 0, token.start
30324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.stop == 5, token.stop
31324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.text == 'foobar', token.text
32324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
33324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        token = lexer.nextToken()
34324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.type == self.lexerModule.WS
35324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.start == 6, token.start
36324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.stop == 6, token.stop
37324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.text == ' ', token.text
38324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
39324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        token = lexer.nextToken()
40324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.type == self.lexerModule.IDENTIFIER
41324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.start == 7, token.start
42324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.stop == 11, token.stop
43324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.text == '_Ab98', token.text
44324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
45324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        token = lexer.nextToken()
46324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.type == self.lexerModule.WS
47324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.start == 12, token.start
48324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.stop == 14, token.stop
49324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.text == ' \n ', token.text
50324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
51324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        token = lexer.nextToken()
52324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.type == self.lexerModule.IDENTIFIER
53324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.start == 15, token.start
54324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.stop == 20, token.stop
55324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.text == 'A12sdf', token.text
56324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
57324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        token = lexer.nextToken()
58324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.type == self.lexerModule.EOF
59324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
60324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
61324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver    def testMalformedInput(self):
62324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        stream = antlr3.StringStream('a-b')
63324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        lexer = self.getLexer(stream)
64324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
65324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        lexer.nextToken()
66324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        try:
67324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver            token = lexer.nextToken()
68324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver            raise AssertionError, token
69324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
70324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        except antlr3.NoViableAltException, exc:
71324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver            assert exc.unexpectedType == '-', repr(exc.unexpectedType)
72324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver            assert exc.charPositionInLine == 1, repr(exc.charPositionInLine)
73324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver            assert exc.line == 1, repr(exc.line)
74324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
75324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
76324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
77324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruverif __name__ == '__main__':
78324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver    unittest.main()
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