t014parser.py

antlr最新版本V3源代码

import antlr3
import testbase
import unittest

class t014parser(testbase.ANTLRTest):
    def setUp(self):
        self.compileGrammar()
        
        
    def testValid(self):
        cStream = antlr3.StringStream('var foobar; gnarz(); var blupp; flupp ( ) ;')
        lexer = self.getLexer(cStream)
        tStream = antlr3.CommonTokenStream(lexer)
        parser = self.getParser(tStream)
        parser.document()

        assert len(parser.reportedErrors) == 0, parser.reportedErrors
        assert parser.events == [
            ('decl', 'foobar'),
            ('call', 'gnarz'),
            ('decl', 'blupp'),
            ('call', 'flupp')
            ], parser.events


    def testMalformedInput1(self):
        cStream = antlr3.StringStream('var; foo();')
        lexer = self.getLexer(cStream)
        tStream = antlr3.CommonTokenStream(lexer)
        parser = self.getParser(tStream)

        parser.document()

        # FIXME: currently strings with formatted errors are collected
        # can't check error locations yet
        assert len(parser.reportedErrors) == 1, parser.reportedErrors
        # FIXME: shouldn't this be ('call', 'foo')???
        assert parser.events == [], parser.events


    def testMalformedInput2(self):
        cStream = antlr3.StringStream('var foobar(); gnarz();')
        lexer = self.getLexer(cStream)
        tStream = antlr3.CommonTokenStream(lexer)
        parser = self.getParser(tStream)

        parser.document()

        # FIXME: currently strings with formatted errors are collected
        # can't check error locations yet
        assert len(parser.reportedErrors) == 1, parser.reportedErrors
        assert parser.events == [
            ('call', 'gnarz'),
            ], parser.events


    def testMalformedInput3(self):
        cStream = antlr3.StringStream('gnarz(; flupp();')
        lexer = self.getLexer(cStream)
        tStream = antlr3.CommonTokenStream(lexer)
        parser = self.getParser(tStream)

        parser.document()

        # FIXME: currently strings with formatted errors are collected
        # can't check error locations yet
        assert len(parser.reportedErrors) == 1, parser.reportedErrors
        assert parser.events == [
            ('call', 'gnarz'),
            ('call', 'flupp'),
            ], parser.events
            

if __name__ == '__main__':
    unittest.main()