def test_var_input_and_output(self):
fcl_text = """
FUNCTION_BLOCK f_block
VAR_INPUT
input_id1 : REAL;
END_VAR
VAR_OUTPUT
output_id1 : REAL;
END_VAR
VAR_INPUT
input_id2 : REAL;
END_VAR
END_FUNCTION_BLOCK
"""
lexer = FclLexer(InputStream(fcl_text))
stream = CommonTokenStream(lexer)
parser = FclParser(stream)
tree = parser.main()
listener = FclListenerTester()
walker = ParseTreeWalker()
walker.walk(listener, tree)
self.assertEqual(['output_id1', 'REAL'], listener.outputs[0])
self.assertEqual(['input_id1', 'REAL'], listener.inputs[0])
self.assertEqual(['input_id2', 'REAL'], listener.inputs[1])
def test_load_simple_function_block2(self):
fcl_text = """
FUNCTION_BLOCK
END_FUNCTION_BLOCK
"""
lexer = FclLexer(InputStream(fcl_text))
stream = CommonTokenStream(lexer)
parser = FclParser(stream)
tree = parser.main()
listener = FclListenerTester()
walker = ParseTreeWalker()
walker.walk(listener, tree)
self.assertEqual([], listener.function_blocks_ids)
def test_var_input_range(self):
fcl_text = """
FUNCTION_BLOCK f_block
VAR_INPUT
input_id : REAL ( 12 .. 34 );
END_VAR
END_FUNCTION_BLOCK
"""
lexer = FclLexer(InputStream(fcl_text))
stream = CommonTokenStream(lexer)
parser = FclParser(stream)
tree = parser.main()
listener = FclListenerTester()
walker = ParseTreeWalker()
walker.walk(listener, tree)
self.assertEqual(['input_id', 'REAL', '12', '34'], listener.inputs[0])
def test_tipper_fcl_file(self):
fcl_text = ""
fcl_file_path = FIXTURES_DIR.child('tipper.fcl')
with open(fcl_file_path, 'r') as fcl_file:
fcl_text = fcl_file.read()
class FclListenerNoError(FclListener):
def visitErrorNode(self, node):
raise FclParserException(node)
lexer = FclLexer(InputStream(fcl_text))
stream = CommonTokenStream(lexer)
parser = FclParser(stream)
tree = parser.main()
listener = FclListenerNoError()
walker = ParseTreeWalker()
walker.walk(listener, tree)