You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
71 lines
1.9 KiB
71 lines
1.9 KiB
import antlr3
|
|
import testbase
|
|
import unittest
|
|
|
|
class t004lexer(testbase.ANTLRTest):
|
|
def setUp(self):
|
|
self.compileGrammar()
|
|
|
|
|
|
def lexerClass(self, base):
|
|
class TLexer(base):
|
|
def emitErrorMessage(self, msg):
|
|
# report errors to /dev/null
|
|
pass
|
|
|
|
def reportError(self, re):
|
|
# no error recovery yet, just crash!
|
|
raise re
|
|
|
|
return TLexer
|
|
|
|
|
|
def testValid(self):
|
|
stream = antlr3.StringStream('ffofoofooo')
|
|
lexer = self.getLexer(stream)
|
|
|
|
token = lexer.nextToken()
|
|
self.assertEqual(token.type, self.lexerModule.FOO)
|
|
self.assertEqual(token.start, 0)
|
|
self.assertEqual(token.stop, 0)
|
|
self.assertEqual(token.text, 'f')
|
|
|
|
token = lexer.nextToken()
|
|
self.assertEqual(token.type, self.lexerModule.FOO)
|
|
self.assertEqual(token.start, 1)
|
|
self.assertEqual(token.stop, 2)
|
|
self.assertEqual(token.text, 'fo')
|
|
|
|
token = lexer.nextToken()
|
|
self.assertEqual(token.type, self.lexerModule.FOO)
|
|
self.assertEqual(token.start, 3)
|
|
self.assertEqual(token.stop, 5)
|
|
self.assertEqual(token.text, 'foo')
|
|
|
|
token = lexer.nextToken()
|
|
self.assertEqual(token.type, self.lexerModule.FOO)
|
|
self.assertEqual(token.start, 6)
|
|
self.assertEqual(token.stop, 9)
|
|
self.assertEqual(token.text, 'fooo')
|
|
|
|
token = lexer.nextToken()
|
|
self.assertEqual(token.type, self.lexerModule.EOF)
|
|
|
|
|
|
def testMalformedInput(self):
|
|
stream = antlr3.StringStream('2')
|
|
lexer = self.getLexer(stream)
|
|
|
|
try:
|
|
token = lexer.nextToken()
|
|
self.fail()
|
|
|
|
except antlr3.MismatchedTokenException as exc:
|
|
self.assertEqual(exc.expecting, 'f')
|
|
self.assertEqual(exc.unexpectedType, '2')
|
|
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main()
|
|
|