xref: /aosp_15_r20/external/antlr/runtime/Python/tests/t014parser.py (revision 16467b971bd3e2009fad32dd79016f2c7e421deb)
1*16467b97STreehugger Robotimport antlr3
2*16467b97STreehugger Robotimport testbase
3*16467b97STreehugger Robotimport unittest
4*16467b97STreehugger Robot
5*16467b97STreehugger Robotclass t014parser(testbase.ANTLRTest):
6*16467b97STreehugger Robot    def setUp(self):
7*16467b97STreehugger Robot        self.compileGrammar()
8*16467b97STreehugger Robot
9*16467b97STreehugger Robot
10*16467b97STreehugger Robot    def testValid(self):
11*16467b97STreehugger Robot        cStream = antlr3.StringStream('var foobar; gnarz(); var blupp; flupp ( ) ;')
12*16467b97STreehugger Robot        lexer = self.getLexer(cStream)
13*16467b97STreehugger Robot        tStream = antlr3.CommonTokenStream(lexer)
14*16467b97STreehugger Robot        parser = self.getParser(tStream)
15*16467b97STreehugger Robot        parser.document()
16*16467b97STreehugger Robot
17*16467b97STreehugger Robot        assert len(parser.reportedErrors) == 0, parser.reportedErrors
18*16467b97STreehugger Robot        assert parser.events == [
19*16467b97STreehugger Robot            ('decl', 'foobar'),
20*16467b97STreehugger Robot            ('call', 'gnarz'),
21*16467b97STreehugger Robot            ('decl', 'blupp'),
22*16467b97STreehugger Robot            ('call', 'flupp')
23*16467b97STreehugger Robot            ], parser.events
24*16467b97STreehugger Robot
25*16467b97STreehugger Robot
26*16467b97STreehugger Robot    def testMalformedInput1(self):
27*16467b97STreehugger Robot        cStream = antlr3.StringStream('var; foo();')
28*16467b97STreehugger Robot        lexer = self.getLexer(cStream)
29*16467b97STreehugger Robot        tStream = antlr3.CommonTokenStream(lexer)
30*16467b97STreehugger Robot        parser = self.getParser(tStream)
31*16467b97STreehugger Robot
32*16467b97STreehugger Robot        parser.document()
33*16467b97STreehugger Robot
34*16467b97STreehugger Robot        # FIXME: currently strings with formatted errors are collected
35*16467b97STreehugger Robot        # can't check error locations yet
36*16467b97STreehugger Robot        assert len(parser.reportedErrors) == 1, parser.reportedErrors
37*16467b97STreehugger Robot        assert parser.events == [], parser.events
38*16467b97STreehugger Robot
39*16467b97STreehugger Robot
40*16467b97STreehugger Robot    def testMalformedInput2(self):
41*16467b97STreehugger Robot        cStream = antlr3.StringStream('var foobar(); gnarz();')
42*16467b97STreehugger Robot        lexer = self.getLexer(cStream)
43*16467b97STreehugger Robot        tStream = antlr3.CommonTokenStream(lexer)
44*16467b97STreehugger Robot        parser = self.getParser(tStream)
45*16467b97STreehugger Robot
46*16467b97STreehugger Robot        parser.document()
47*16467b97STreehugger Robot
48*16467b97STreehugger Robot        # FIXME: currently strings with formatted errors are collected
49*16467b97STreehugger Robot        # can't check error locations yet
50*16467b97STreehugger Robot        assert len(parser.reportedErrors) == 1, parser.reportedErrors
51*16467b97STreehugger Robot        assert parser.events == [
52*16467b97STreehugger Robot            ('call', 'gnarz'),
53*16467b97STreehugger Robot            ], parser.events
54*16467b97STreehugger Robot
55*16467b97STreehugger Robot
56*16467b97STreehugger Robot    def testMalformedInput3(self):
57*16467b97STreehugger Robot        cStream = antlr3.StringStream('gnarz(; flupp();')
58*16467b97STreehugger Robot        lexer = self.getLexer(cStream)
59*16467b97STreehugger Robot        tStream = antlr3.CommonTokenStream(lexer)
60*16467b97STreehugger Robot        parser = self.getParser(tStream)
61*16467b97STreehugger Robot
62*16467b97STreehugger Robot        parser.document()
63*16467b97STreehugger Robot
64*16467b97STreehugger Robot        # FIXME: currently strings with formatted errors are collected
65*16467b97STreehugger Robot        # can't check error locations yet
66*16467b97STreehugger Robot        assert len(parser.reportedErrors) == 1, parser.reportedErrors
67*16467b97STreehugger Robot        assert parser.events == [
68*16467b97STreehugger Robot            ('call', 'gnarz'),
69*16467b97STreehugger Robot            ('call', 'flupp'),
70*16467b97STreehugger Robot            ], parser.events
71*16467b97STreehugger Robot
72*16467b97STreehugger Robot
73*16467b97STreehugger Robotif __name__ == '__main__':
74*16467b97STreehugger Robot    unittest.main()
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