1324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruverimport antlr3
2324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruverimport testbase
3324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruverimport unittest
4324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
5324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruverclass t004lexer(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('ffofoofooo')
25324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        lexer = self.getLexer(stream)
26324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
27324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        token = lexer.nextToken()
28324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.type == self.lexerModule.FOO
29324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.start == 0, token.start
30324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.stop == 0, token.stop
31324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.text == 'f', token.text
32324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
33324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        token = lexer.nextToken()
34324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.type == self.lexerModule.FOO
35324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.start == 1, token.start
36324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.stop == 2, token.stop
37324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.text == 'fo', token.text
38324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
39324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        token = lexer.nextToken()
40324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.type == self.lexerModule.FOO
41324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.start == 3, token.start
42324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.stop == 5, token.stop
43324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.text == 'foo', token.text
44324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
45324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        token = lexer.nextToken()
46324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.type == self.lexerModule.FOO
47324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.start == 6, token.start
48324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.stop == 9, token.stop
49324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.text == 'fooo', token.text
50324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
51324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        token = lexer.nextToken()
52324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        assert token.type == self.lexerModule.EOF
53324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
54324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
55324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver    def testMalformedInput(self):
56324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        stream = antlr3.StringStream('2')
57324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        lexer = self.getLexer(stream)
58324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
59324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        try:
60324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver            token = lexer.nextToken()
61324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver            self.fail()
62324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
63324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver        except antlr3.MismatchedTokenException, exc:
64324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver            self.failUnlessEqual(exc.expecting, 'f')
65324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver            self.failUnlessEqual(exc.unexpectedType, '2')
66324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
67324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
68324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruverif __name__ == '__main__':
69324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver    unittest.main()
70324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver
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