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.
60 lines
1.6 KiB
60 lines
1.6 KiB
import antlr3
|
|
import testbase
|
|
import unittest
|
|
|
|
class t007lexer(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('fofababbooabb')
|
|
lexer = self.getLexer(stream)
|
|
|
|
token = lexer.nextToken()
|
|
assert token.type == self.lexerModule.FOO
|
|
assert token.start == 0, token.start
|
|
assert token.stop == 1, token.stop
|
|
assert token.text == 'fo', token.text
|
|
|
|
token = lexer.nextToken()
|
|
assert token.type == self.lexerModule.FOO
|
|
assert token.start == 2, token.start
|
|
assert token.stop == 12, token.stop
|
|
assert token.text == 'fababbooabb', token.text
|
|
|
|
token = lexer.nextToken()
|
|
assert token.type == self.lexerModule.EOF
|
|
|
|
|
|
def testMalformedInput(self):
|
|
stream = antlr3.StringStream('foaboao')
|
|
lexer = self.getLexer(stream)
|
|
|
|
try:
|
|
token = lexer.nextToken()
|
|
raise AssertionError, token
|
|
|
|
except antlr3.EarlyExitException, exc:
|
|
assert exc.unexpectedType == 'o', repr(exc.unexpectedType)
|
|
assert exc.charPositionInLine == 6, repr(exc.charPositionInLine)
|
|
assert exc.line == 1, repr(exc.line)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main()
|
|
|