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.
58 lines
1.4 KiB
58 lines
1.4 KiB
4 months ago
|
import antlr3
|
||
|
|
import testbase
|
||
|
|
import unittest
|
||
|
|
|
||
|
|
class t001lexer(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('0')
|
||
|
|
lexer = self.getLexer(stream)
|
||
|
|
|
||
|
|
token = lexer.nextToken()
|
||
|
|
self.assertEqual(token.type, self.lexerModule.ZERO)
|
||
|
|
|
||
|
|
token = lexer.nextToken()
|
||
|
|
self.assertEqual(token.type, self.lexerModule.EOF)
|
||
|
|
|
||
|
|
|
||
|
|
def testIteratorInterface(self):
|
||
|
|
stream = antlr3.StringStream('0')
|
||
|
|
lexer = self.getLexer(stream)
|
||
|
|
|
||
|
|
types = [token.type for token in lexer]
|
||
|
|
|
||
|
|
self.assertEqual(types, [self.lexerModule.ZERO])
|
||
|
|
|
||
|
|
|
||
|
|
def testMalformedInput(self):
|
||
|
|
stream = antlr3.StringStream('1')
|
||
|
|
lexer = self.getLexer(stream)
|
||
|
|
|
||
|
|
try:
|
||
|
|
token = lexer.nextToken()
|
||
|
|
self.fail()
|
||
|
|
|
||
|
|
except antlr3.MismatchedTokenException as exc:
|
||
|
|
self.assertEqual(exc.expecting, '0')
|
||
|
|
self.assertEqual(exc.unexpectedType, '1')
|
||
|
|
|
||
|
|
|
||
|
|
if __name__ == '__main__':
|
||
|
|
unittest.main()
|