class LucyTestCompiler(object):
def __init__(self):
self.parser = LucyParser()
def compile(self, code, filename="<string>"):
tree = self.parser.parse(code)
misc.set_filename(filename, tree)
syntax.check(tree)
gen = pycodegen.ModuleCodeGenerator(tree)
code = gen.getCode()
return code
class LucyTestCompiler(object):
def __init__(self):
self.parser = LucyParser()
def compile(self, code, filename="<string>"):
tree = self.parser.parse(code)
misc.set_filename(filename, tree)
syntax.check(tree)
gen = pycodegen.ModuleCodeGenerator(tree)
code = gen.getCode()
return code
def setUp(self):
self.parser = LucyParser()
class TestParserRules(BaseTest):
def setUp(self):
self.parser = LucyParser()
def do_test_header(self, tree):
assert isinstance(tree.next(), ast.Module)
assert tree.next() is None # FIXME: why None here?
assert isinstance(tree.next(), ast.Stmt)
def test_multiple_item_tuple(self):
"""Test tuple with multiple items
(a, b, c)
#
"""
code = self.get_string(self.test_multiple_item_tuple)
tree = traverse_tree(self.parser.parse(code))
self.do_test_header(tree)
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.Tuple)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'c'
self.assertRaises(StopIteration, tree.next)
def test_single_item_tuple(self):
"""Test single item tuple with trailing comma
(a,)
"""
code = self.get_string(self.test_single_item_tuple)
tree = traverse_tree(self.parser.parse(code))
self.do_test_header(tree)
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.Tuple)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
self.assertRaises(StopIteration, tree.next)
def test_booleans(self):
"""Test all boolean operators
not a
a and b
a or b
"""
code = self.get_string(self.test_booleans)
tree = traverse_tree(self.parser.parse(code))
self.do_test_header(tree)
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.Not)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.And)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.Or)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
self.assertRaises(StopIteration, tree.next)
def test_all_comparisons(self):
"""Test all comparisons
a < b
a <= b
a > b
a >= b
a != b
a == b
a is b
a is not b
a in b
a not in b
"""
code = self.get_string(self.test_all_comparisons)
tree = traverse_tree(self.parser.parse(code))
self.do_test_header(tree)
for op in ('<', '<=', '>', '>=', '!=', '==', 'is', 'is not', 'in',
'not in'):
assert isinstance(tree.next(), ast.Discard), op
assert isinstance(tree.next(), ast.Compare), op
assert isinstance(tree.next(), ast.Name), op
assert tree.next() == 'a', op
assert tree.next() == op, op
assert isinstance(tree.next(), ast.Name), op
assert tree.next() == 'b', op
self.assertRaises(StopIteration, tree.next)
def test_all_exprs(self):
"""Test all expressions
a ** b
-a
+a
a * b
a / b
a % b
a + b
a - b
a << b
a >> b
a & b
a ^ b
a | b
"""
code = self.get_string(self.test_all_exprs)
tree = traverse_tree(self.parser.parse(code))
self.do_test_header(tree)
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.Power)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.UnarySub)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.UnaryAdd)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.Mul)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.Div)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.Mod)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.Add)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.Sub)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.LeftShift)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.RightShift)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.Bitand)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.Bitxor)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.Bitor)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
self.assertRaises(StopIteration, tree.next)
def test_augmented_assignments(self):
"""Test augmented assignments
a += b
a -= b
a /= b
a *= b
a %= b
a **= b
a <<= b
a >>= b
a &= b
a |= b
a ^= b
"""
code = self.get_string(self.test_augmented_assignments)
tree = traverse_tree(self.parser.parse(code))
self.do_test_header(tree)
assert isinstance(tree.next(), ast.AugAssign)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert tree.next() == '+='
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.AugAssign)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert tree.next() == '-='
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.AugAssign)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert tree.next() == '/='
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.AugAssign)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert tree.next() == '*='
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.AugAssign)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert tree.next() == '%='
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.AugAssign)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert tree.next() == '**='
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.AugAssign)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert tree.next() == '<<='
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.AugAssign)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert tree.next() == '>>='
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.AugAssign)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert tree.next() == '&='
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.AugAssign)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert tree.next() == '|='
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.AugAssign)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert tree.next() == '^='
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
def test_trailed_atom(self):
"""Test the base atoms with a function call
a(x, y, z)
"""
code = self.get_string(self.test_trailed_atom)
tree = traverse_tree(self.parser.parse(code))
self.do_test_header(tree)
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.CallFunc)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'x'
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'y'
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'z'
assert tree.next() is None
assert tree.next() is None
self.assertRaises(StopIteration, tree.next)
def test_base_atoms(self):
'''Test the base atoms
a
1
3.14
"hello"
'''
code = self.get_string(self.test_base_atoms)
tree = traverse_tree(self.parser.parse(code))
self.do_test_header(tree)
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.Const)
assert tree.next() == 1
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.Const)
assert tree.next() == 3.14
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.Const)
assert tree.next() == "hello"
self.assertRaises(StopIteration, tree.next)
def test_assignment(self):
"""Test assignment
x = a
y = b
"""
code = self.get_string(self.test_assignment)
tree = traverse_tree(self.parser.parse(code))
self.do_test_header(tree)
assert isinstance(tree.next(), ast.Assign)
assert isinstance(tree.next(), ast.AssName)
assert tree.next() == 'x'
assert tree.next() == OP_ASSIGN
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Assign)
assert isinstance(tree.next(), ast.AssName)
assert tree.next() == 'y'
assert tree.next() == OP_ASSIGN
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
self.assertRaises(StopIteration, tree.next)
def test_comments_are_ignored(self):
"""Test comments are ignored by tokenizer
# this is another comment
x = a
y = b
"""
# FIXME: comments at the end of input raise an error (an extra
# ENDMARKER?)
code = self.get_string(self.test_comments_are_ignored)
tree = traverse_tree(self.parser.parse(code))
self.do_test_header(tree)
assert isinstance(tree.next(), ast.Assign)
assert isinstance(tree.next(), ast.AssName)
assert tree.next() == 'x'
assert tree.next() == OP_ASSIGN
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Assign)
assert isinstance(tree.next(), ast.AssName)
assert tree.next() == 'y'
assert tree.next() == OP_ASSIGN
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
self.assertRaises(StopIteration, tree.next)
def test_get_attribute(self):
"""Test get attribute
a.x
"""
code = self.get_string(self.test_get_attribute)
tree = traverse_tree(self.parser.parse(code))
self.do_test_header(tree)
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.Getattr)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert tree.next() == 'x'
self.assertRaises(StopIteration, tree.next)
def test_attribute_assignment(self):
"""Test attribute assignment
o.a = v
"""
code = self.get_string(self.test_attribute_assignment)
tree = traverse_tree(self.parser.parse(code))
self.do_test_header(tree)
assert isinstance(tree.next(), ast.Assign)
assert isinstance(tree.next(), ast.AssAttr)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'o'
assert tree.next() == 'a'
assert tree.next() == OP_ASSIGN
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'v'
self.assertRaises(StopIteration, tree.next)
def test_atoms_with_no_comma_fail(self):
"""Test if the expressions below fail
1 2 3
a b c
"""
code = self.get_string(self.test_atoms_with_no_comma_fail)
self.assertRaises(SyntaxError, self.parser.parse, code)
def test_assignment_to_literal_fails(self):
"""Test if an assignment to literal fails
1 = 0
"""
code = self.get_string(self.test_assignment_to_literal_fails)
print self.parser._lexer
def __init__(self):
self.parser = LucyParser()
def setUp(self):
self.parser = LucyParser()
class TestParserRules(BaseTest):
def setUp(self):
self.parser = LucyParser()
def do_test_header(self, tree):
assert isinstance(tree.next(), ast.Module)
assert tree.next() is None # FIXME: why None here?
assert isinstance(tree.next(), ast.Stmt)
def test_multiple_item_tuple(self):
"""Test tuple with multiple items
(a, b, c)
#
"""
code = self.get_string(self.test_multiple_item_tuple)
tree = traverse_tree(self.parser.parse(code))
self.do_test_header(tree)
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.Tuple)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'c'
self.assertRaises(StopIteration, tree.next)
def test_single_item_tuple(self):
"""Test single item tuple with trailing comma
(a,)
"""
code = self.get_string(self.test_single_item_tuple)
tree = traverse_tree(self.parser.parse(code))
self.do_test_header(tree)
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.Tuple)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
self.assertRaises(StopIteration, tree.next)
def test_booleans(self):
"""Test all boolean operators
not a
a and b
a or b
"""
code = self.get_string(self.test_booleans)
tree = traverse_tree(self.parser.parse(code))
self.do_test_header(tree)
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.Not)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.And)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.Or)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
self.assertRaises(StopIteration, tree.next)
def test_all_comparisons(self):
"""Test all comparisons
a < b
a <= b
a > b
a >= b
a != b
a == b
a is b
a is not b
a in b
a not in b
"""
code = self.get_string(self.test_all_comparisons)
tree = traverse_tree(self.parser.parse(code))
self.do_test_header(tree)
for op in ('<', '<=', '>', '>=', '!=', '==', 'is',
'is not', 'in', 'not in'):
assert isinstance(tree.next(), ast.Discard), op
assert isinstance(tree.next(), ast.Compare), op
assert isinstance(tree.next(), ast.Name), op
assert tree.next() == 'a', op
assert tree.next() == op, op
assert isinstance(tree.next(), ast.Name), op
assert tree.next() == 'b', op
self.assertRaises(StopIteration, tree.next)
def test_all_exprs(self):
"""Test all expressions
a ** b
-a
+a
a * b
a / b
a % b
a + b
a - b
a << b
a >> b
a & b
a ^ b
a | b
"""
code = self.get_string(self.test_all_exprs)
tree = traverse_tree(self.parser.parse(code))
self.do_test_header(tree)
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.Power)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.UnarySub)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.UnaryAdd)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.Mul)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.Div)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.Mod)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.Add)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.Sub)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.LeftShift)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.RightShift)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.Bitand)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.Bitxor)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.Bitor)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
self.assertRaises(StopIteration, tree.next)
def test_augmented_assignments(self):
"""Test augmented assignments
a += b
a -= b
a /= b
a *= b
a %= b
a **= b
a <<= b
a >>= b
a &= b
a |= b
a ^= b
"""
code = self.get_string(self.test_augmented_assignments)
tree = traverse_tree(self.parser.parse(code))
self.do_test_header(tree)
assert isinstance(tree.next(), ast.AugAssign)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert tree.next() == '+='
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.AugAssign)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert tree.next() == '-='
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.AugAssign)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert tree.next() == '/='
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.AugAssign)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert tree.next() == '*='
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.AugAssign)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert tree.next() == '%='
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.AugAssign)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert tree.next() == '**='
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.AugAssign)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert tree.next() == '<<='
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.AugAssign)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert tree.next() == '>>='
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.AugAssign)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert tree.next() == '&='
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.AugAssign)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert tree.next() == '|='
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
assert isinstance(tree.next(), ast.AugAssign)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert tree.next() == '^='
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
def test_trailed_atom(self):
"""Test the base atoms with a function call
a(x, y, z)
"""
code = self.get_string(self.test_trailed_atom)
tree = traverse_tree(self.parser.parse(code))
self.do_test_header(tree)
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.CallFunc)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'x'
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'y'
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'z'
assert tree.next() is None
assert tree.next() is None
self.assertRaises(StopIteration, tree.next)
def test_base_atoms(self):
'''Test the base atoms
a
1
3.14
"hello"
'''
code = self.get_string(self.test_base_atoms)
tree = traverse_tree(self.parser.parse(code))
self.do_test_header(tree)
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.Const)
assert tree.next() == 1
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.Const)
assert tree.next() == 3.14
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.Const)
assert tree.next() == "hello"
self.assertRaises(StopIteration, tree.next)
def test_assignment(self):
"""Test assignment
x = a
y = b
"""
code = self.get_string(self.test_assignment)
tree = traverse_tree(self.parser.parse(code))
self.do_test_header(tree)
assert isinstance(tree.next(), ast.Assign)
assert isinstance(tree.next(), ast.AssName)
assert tree.next() == 'x'
assert tree.next() == OP_ASSIGN
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Assign)
assert isinstance(tree.next(), ast.AssName)
assert tree.next() == 'y'
assert tree.next() == OP_ASSIGN
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
self.assertRaises(StopIteration, tree.next)
def test_comments_are_ignored(self):
"""Test comments are ignored by tokenizer
# this is another comment
x = a
y = b
"""
# FIXME: comments at the end of input raise an error (an extra
# ENDMARKER?)
code = self.get_string(self.test_comments_are_ignored)
tree = traverse_tree(self.parser.parse(code))
self.do_test_header(tree)
assert isinstance(tree.next(), ast.Assign)
assert isinstance(tree.next(), ast.AssName)
assert tree.next() == 'x'
assert tree.next() == OP_ASSIGN
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert isinstance(tree.next(), ast.Assign)
assert isinstance(tree.next(), ast.AssName)
assert tree.next() == 'y'
assert tree.next() == OP_ASSIGN
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'b'
self.assertRaises(StopIteration, tree.next)
def test_get_attribute(self):
"""Test get attribute
a.x
"""
code = self.get_string(self.test_get_attribute)
tree = traverse_tree(self.parser.parse(code))
self.do_test_header(tree)
assert isinstance(tree.next(), ast.Discard)
assert isinstance(tree.next(), ast.Getattr)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'a'
assert tree.next() == 'x'
self.assertRaises(StopIteration, tree.next)
def test_attribute_assignment(self):
"""Test attribute assignment
o.a = v
"""
code = self.get_string(self.test_attribute_assignment)
tree = traverse_tree(self.parser.parse(code))
self.do_test_header(tree)
assert isinstance(tree.next(), ast.Assign)
assert isinstance(tree.next(), ast.AssAttr)
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'o'
assert tree.next() == 'a'
assert tree.next() == OP_ASSIGN
assert isinstance(tree.next(), ast.Name)
assert tree.next() == 'v'
self.assertRaises(StopIteration, tree.next)
def test_atoms_with_no_comma_fail(self):
"""Test if the expressions below fail
1 2 3
a b c
"""
code = self.get_string(self.test_atoms_with_no_comma_fail)
self.assertRaises(SyntaxError, self.parser.parse, code)
def __init__(self):
self.parser = LucyParser()
