def test_squareBrackets(self):
ast = Parser(Lexer('A = [ B ] ;')).grammar()
self.assertEqual(len(ast), 1)
self.assertEqual(ast[0].rule, Token('A', Token.RULE))
self.assertEqual(ast[0].stmt.__class__.__name__, "Optional")
self.assertEqual(ast[0].stmt.token, Token('B', Token.RULE))
def test_curlyBrackets(self):
ast = Parser(Lexer('A = { B } ;')).grammar()
self.assertEqual(len(ast), 1)
self.assertEqual(ast[0].rule, Token('A', Token.RULE))
self.assertEqual(ast[0].stmt.__class__.__name__, "Repetition")
self.assertEqual(ast[0].stmt.token, Token('B', Token.RULE))
def test_brackets(self):
ast = Parser(Lexer('A = ( B ) ;')).grammar()
self.assertEqual(len(ast), 1)
self.assertEqual(ast[0].rule, Token('A', Token.RULE))
self.assertEqual(ast[0].stmt.__class__.__name__, "Grouping")
self.assertEqual(ast[0].stmt.token, Token('B', Token.RULE))
def test_idAndId(self):
ast = Parser(Lexer('A = B , C ;')).grammar()
self.assertEqual(len(ast), 1)
self.assertEqual(ast[0].rule, Token('A', Token.RULE))
self.assertEqual(ast[0].stmt.__class__.__name__, "Concatenation")
self.assertEqual(ast[0].stmt.lhs, Token('B', Token.RULE))
self.assertEqual(ast[0].stmt.rhs, Token('C', Token.RULE))
def test_multiline(self):
ast = Parser(Lexer('A = ( B );\nB = "C" ;')).grammar()
self.assertEqual(len(ast), 2)
self.assertEqual(ast[0].rule, Token('A', Token.RULE))
self.assertEqual(ast[0].stmt.__class__.__name__, "Grouping")
self.assertEqual(ast[0].stmt.token, Token('B', Token.RULE))
self.assertEqual(ast[1].rule, Token('B', Token.RULE))
self.assertEqual(ast[1].stmt, Token('C', Token.LITERAL))
def test_Parse(self):
ast = Parser(Lexer('letter = "A" ;')).grammar()
self.assertEqual(len(ast), 1)
self.assertEqual(ast[0].rule, Token('letter', Token.RULE))
self.assertEqual(ast[0].stmt, Token('A', Token.LITERAL))
def test_id(self):
ast = Parser(Lexer('A = B ;')).grammar()
self.assertEqual(len(ast), 1)
self.assertEqual(ast[0].rule, Token('A', Token.RULE))
self.assertEqual(ast[0].stmt, Token('B', Token.RULE))