xref: /aosp_15_r20/external/antlr/runtime/Python3/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        self.assertEqual(parser.reportedErrors, [])
18*16467b97STreehugger Robot        self.assertEqual(parser.events,
19*16467b97STreehugger Robot                         [('decl', 'foobar'), ('call', 'gnarz'),
20*16467b97STreehugger Robot                          ('decl', 'blupp'), ('call', 'flupp')])
21*16467b97STreehugger Robot
22*16467b97STreehugger Robot
23*16467b97STreehugger Robot    def testMalformedInput1(self):
24*16467b97STreehugger Robot        cStream = antlr3.StringStream('var; foo();')
25*16467b97STreehugger Robot        lexer = self.getLexer(cStream)
26*16467b97STreehugger Robot        tStream = antlr3.CommonTokenStream(lexer)
27*16467b97STreehugger Robot        parser = self.getParser(tStream)
28*16467b97STreehugger Robot
29*16467b97STreehugger Robot        parser.document()
30*16467b97STreehugger Robot
31*16467b97STreehugger Robot        # FIXME: currently strings with formatted errors are collected
32*16467b97STreehugger Robot        # can't check error locations yet
33*16467b97STreehugger Robot        self.assertEqual(len(parser.reportedErrors), 1, parser.reportedErrors)
34*16467b97STreehugger Robot        self.assertEqual(parser.events, [])
35*16467b97STreehugger Robot
36*16467b97STreehugger Robot
37*16467b97STreehugger Robot    def testMalformedInput2(self):
38*16467b97STreehugger Robot        cStream = antlr3.StringStream('var foobar(); gnarz();')
39*16467b97STreehugger Robot        lexer = self.getLexer(cStream)
40*16467b97STreehugger Robot        tStream = antlr3.CommonTokenStream(lexer)
41*16467b97STreehugger Robot        parser = self.getParser(tStream)
42*16467b97STreehugger Robot
43*16467b97STreehugger Robot        parser.document()
44*16467b97STreehugger Robot
45*16467b97STreehugger Robot        # FIXME: currently strings with formatted errors are collected
46*16467b97STreehugger Robot        # can't check error locations yet
47*16467b97STreehugger Robot        self.assertEqual(len(parser.reportedErrors), 1, parser.reportedErrors)
48*16467b97STreehugger Robot        self.assertEqual(parser.events, [('call', 'gnarz')])
49*16467b97STreehugger Robot
50*16467b97STreehugger Robot
51*16467b97STreehugger Robot    def testMalformedInput3(self):
52*16467b97STreehugger Robot        cStream = antlr3.StringStream('gnarz(; flupp();')
53*16467b97STreehugger Robot        lexer = self.getLexer(cStream)
54*16467b97STreehugger Robot        tStream = antlr3.CommonTokenStream(lexer)
55*16467b97STreehugger Robot        parser = self.getParser(tStream)
56*16467b97STreehugger Robot
57*16467b97STreehugger Robot        parser.document()
58*16467b97STreehugger Robot
59*16467b97STreehugger Robot        # FIXME: currently strings with formatted errors are collected
60*16467b97STreehugger Robot        # can't check error locations yet
61*16467b97STreehugger Robot        self.assertEqual(len(parser.reportedErrors), 1, parser.reportedErrors)
62*16467b97STreehugger Robot        self.assertEqual(parser.events, [('call', 'gnarz'), ('call', 'flupp')])
63*16467b97STreehugger Robot
64*16467b97STreehugger Robot
65*16467b97STreehugger Robotif __name__ == '__main__':
66*16467b97STreehugger Robot    unittest.main()
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