def test_if_named_then_else():
inc_type = Func[[IntType], IntType]
check_expr_type(
"""
if (inc 1) :then (inc 2) :else (inc 3)
""",
Tuple.typed(Union[IntType, ], [
Symbol.typed(IF3_TYPE, 'if'),
Tuple.typed(IntType, [
Symbol.typed(inc_type, 'inc'),
Number.typed(IntType, 1),
]),
Keyword('then'),
Tuple.typed(IntType, [
Symbol.typed(inc_type, 'inc'),
Number.typed(IntType, 2),
]),
Keyword('else'),
Tuple.typed(IntType, [
Symbol.typed(inc_type, 'inc'),
Number.typed(IntType, 3),
]),
]),
{'inc': inc_type},
)
def test_list():
foo_type = Func[[ListType[Union[IntType, StringType]]], IntType]
check_expr_type(
"""
foo [1 2 3]
""",
Tuple.typed(IntType, [
Symbol.typed(foo_type, 'foo'),
List.typed(ListType[Union[IntType, ]], [
Number.typed(IntType, 1),
Number.typed(IntType, 2),
Number.typed(IntType, 3),
]),
]),
{'foo': foo_type},
)
check_expr_type(
"""
foo [1 2 "3"]
""",
Tuple.typed(IntType, [
Symbol.typed(foo_type, 'foo'),
List.typed(ListType[Union[IntType, StringType]], [
Number.typed(IntType, 1),
Number.typed(IntType, 2),
String.typed(StringType, '3'),
]),
]),
{'foo': foo_type},
)
with py.test.raises(TypeCheckError):
check_expr('foo [1 2 "3"]',
{'foo': Func[[ListType[IntType]], IntType]})
def test_if_some_arg():
inc_type = Func[[IntType], IntType]
foo_type1 = None # to simulate TypeVar[None]
foo_type2 = Record[{'bar': Option[IntType]}]
env = {'inc': inc_type, 'foo': foo_type1}
check_expr_type(
"""
if-some [x #foo.bar] (inc x)
""",
Tuple.typed(Option[IntType], [
Symbol.typed(IF_SOME1_TYPE, 'if-some'),
List([
Symbol('x'),
Tuple.typed(Option[IntType], [
Symbol.typed(GET_TYPE, 'get'),
Placeholder.typed(foo_type2, 'foo'),
Symbol('bar'),
]),
]),
Tuple.typed(IntType, [
Symbol.typed(inc_type, 'inc'),
Symbol.typed(IntType, 'x'),
]),
]),
env,
)
def test_if_some():
inc_type = Func[[IntType], IntType]
foo_type = Record[{'bar': Option[IntType]}]
env = {'inc': inc_type, 'foo': foo_type}
check_expr_type(
"""
if-some [x foo.bar] (inc x)
""",
Tuple.typed(Option[IntType], [
Symbol.typed(IF_SOME1_TYPE, 'if-some'),
List([
Symbol('x'),
Tuple.typed(Option[IntType], [
Symbol.typed(GET_TYPE, 'get'),
Symbol.typed(foo_type, 'foo'),
Symbol('bar'),
]),
]),
Tuple.typed(IntType, [
Symbol.typed(inc_type, 'inc'),
Symbol.typed(Union[IntType, ], 'x'),
]),
]),
env,
)
with py.test.raises(TypeCheckError):
check_expr('inc foo.bar', env)
def test_env_var():
inc_type = Func[[IntType], IntType]
check_expr_type(
"""
inc var
""",
Tuple.typed(IntType, [
Symbol.typed(inc_type, 'inc'),
Symbol.typed(IntType, 'var'),
]),
{'inc': inc_type, 'var': IntType},
)
def test_html_tags():
check_expr_type(
"""
div :foo "bar"
span "Some Text"
""",
Tuple.typed(Markup, [
Symbol.typed(HTML_TAG_TYPE, 'div'),
Keyword('foo'),
String.typed(StringType, 'bar'),
Tuple.typed(Markup, [
Symbol.typed(HTML_TAG_TYPE, 'span'),
String.typed(StringType, 'Some Text'),
]),
]),
)
def test_let():
inc_type = Func[[IntType], IntType]
check_expr_type(
'let [x 1] (inc x)',
Tuple.typed(IntType, [
Symbol.typed(LET_TYPE, 'let'),
List([
Symbol.typed(IntType, 'x'),
Number.typed(IntType, 1),
]),
Tuple.typed(IntType, [
Symbol.typed(inc_type, 'inc'),
Symbol.typed(IntType, 'x'),
]),
]),
{'inc': inc_type},
)
def test_if_some_named_else():
inc_type = Func[[IntType], IntType]
dec_type = Func[[IntType], IntType]
foo_type = Record[{'bar': Option[IntType]}]
env = {'inc': inc_type, 'dec': dec_type, 'foo': foo_type}
check_expr_type(
"""
if-some [x foo.bar] :then (inc x) :else (dec x)
""",
Tuple.typed(Union[IntType, IntType], [
Symbol.typed(IF_SOME3_TYPE, 'if-some'),
List([
Symbol('x'),
Tuple.typed(Option[IntType], [
Symbol.typed(GET_TYPE, 'get'),
Symbol.typed(foo_type, 'foo'),
Symbol('bar'),
]),
]),
Keyword('then'),
Tuple.typed(IntType, [
Symbol.typed(inc_type, 'inc'),
Symbol.typed(Union[IntType, ], 'x'),
]),
Keyword('else'),
Tuple.typed(IntType, [
Symbol.typed(dec_type, 'dec'),
Symbol.typed(Union[IntType, ], 'x'),
]),
]),
env,
)
def test_infer():
inc_type = Func[[IntType], IntType]
foo_type = Func[[NamedArg['arg', IntType]], IntType]
check_expr_type(
"""
def foo
inc #arg
""",
Tuple.typed(foo_type, [
Symbol.typed(DEF_TYPE, 'def'),
Symbol('foo'),
Tuple.typed(IntType, [
Symbol.typed(inc_type, 'inc'),
Placeholder.typed(IntType, 'arg'),
])
]),
{'inc': inc_type},
)
def test_if_then():
inc_type = Func[[IntType], IntType]
check_expr_type(
"""
if (inc 1) (inc 2)
""",
Tuple.typed(Option[IntType], [
Symbol.typed(IF1_TYPE, 'if'),
Tuple.typed(IntType, [
Symbol.typed(inc_type, 'inc'),
Number.typed(IntType, 1),
]),
Tuple.typed(IntType, [
Symbol.typed(inc_type, 'inc'),
Number.typed(IntType, 2),
]),
]),
{'inc': inc_type},
)
def test_func():
inc_type = Func[[IntType], IntType]
check_expr_type(
'inc 1',
Tuple.typed(IntType, [Symbol.typed(inc_type, 'inc'),
Number.typed(IntType, 1)]),
{'inc': inc_type},
)
inc_step_type = Func[[IntType, NamedArg['step', IntType]], IntType]
check_expr_type(
'inc-step 1 :step 2',
Tuple.typed(IntType, [Symbol.typed(inc_step_type, 'inc-step'),
Number.typed(IntType, 1),
Keyword('step'), Number.typed(IntType, 2)]),
{'inc-step': inc_step_type},
)
with py.test.raises(TypeCheckError):
check_expr('inc "foo"', {'inc': inc_type})
def test_env():
node, refs = get_refs(
"""
def foo
span var
""",
{'var': StringType},
)
var = node.values[0].values[2].values[1]
var_type = ctx_var(StringType, 'var')
check_eq(var, Symbol.typed(var_type, 'var'))
def test_record():
inc_type = Func[[IntType], IntType]
bar_type = Record[{'baz': IntType}]
check_expr_type(
"""
inc bar.baz
""",
Tuple.typed(IntType, [
Symbol.typed(inc_type, 'inc'),
Tuple.typed(IntType, [
Symbol.typed(GET_TYPE, 'get'),
Symbol.typed(bar_type, 'bar'),
Symbol('baz'),
]),
]),
{'inc': inc_type, 'bar': bar_type},
)
with py.test.raises(TypeCheckError):
check_expr('inc bar.unknown',
{'inc': inc_type, 'bar': bar_type})
def test_record_infer():
bar_type = Record[{'baz': IntType}]
inc_type = Func[[IntType], IntType]
foo_type = Func[[NamedArg['bar', bar_type]], IntType]
check_expr_type(
"""
def foo
inc #bar.baz
""",
Tuple.typed(foo_type, [
Symbol.typed(DEF_TYPE, 'def'),
Symbol('foo'),
Tuple.typed(IntType, [
Symbol.typed(inc_type, 'inc'),
Tuple.typed(IntType, [
Symbol.typed(GET_TYPE, 'get'),
Placeholder.typed(bar_type, 'bar'),
Symbol('baz'),
]),
])
]),
{'inc': inc_type},
)
def test_each():
inc_type = Func[[IntType], IntType]
rec_type = Record[{'attr': IntType}]
list_rec_type = ListType[rec_type]
check_expr_type(
"""
each i collection
inc i.attr
""",
Tuple.typed(Markup, [
Symbol.typed(EACH_TYPE, 'each'),
Symbol.typed(rec_type, 'i'),
Symbol.typed(list_rec_type, 'collection'),
Tuple.typed(IntType, [
Symbol.typed(inc_type, 'inc'),
Tuple.typed(IntType, [
Symbol.typed(GET_TYPE, 'get'),
Symbol.typed(rec_type, 'i'),
Symbol('attr'),
]),
]),
]),
{'inc': inc_type, 'collection': list_rec_type},
)