def map_get_nested3(map, keys, default=Null()):
for key in keys:
map = map.to_dict().get(key, None)
if map is None:
return default
return map
def test_reference_operations():
"""Test the example expressions in the reference document:
http://sass-lang.com/docs/yardoc/file.SASS_REFERENCE.html#operations
"""
# TODO: break this into its own file and add the entire reference guide
# Need to build the calculator manually to get at its namespace, and need
# to use calculate() instead of evaluate_expression() so interpolation
# works
ns = CoreExtension.namespace.derive()
calc = Calculator(ns).calculate
# Simple example
assert calc('1in + 8pt') == Number(1.1111111111111112, "in")
# Division
ns.set_variable('$width', Number(1000, "px"))
ns.set_variable('$font-size', Number(12, "px"))
ns.set_variable('$line-height', Number(30, "px"))
assert calc('10px/8px') == String('10px / 8px') # plain CSS; no division
assert calc('$width/2') == Number(500,
"px") # uses a variable; does division
assert calc('(500px/2)') == Number(250, "px") # uses parens; does division
assert calc('5px + 8px/2px') == Number(9, "px") # uses +; does division
# TODO, again: Ruby Sass correctly renders this without spaces
assert calc('#{$font-size}/#{$line-height}') == String('12px / 30px')
# uses #{}; does no division
# Color operations
ns.set_variable('$translucent-red', Color.from_rgb(1, 0, 0, 0.5))
ns.set_variable('$green', Color.from_name('lime'))
assert calc('#010203 + #040506') == Color.from_hex('#050709')
assert calc('#010203 * 2') == Color.from_hex('#020406')
assert calc(
'rgba(255, 0, 0, 0.75) + rgba(0, 255, 0, 0.75)') == Color.from_rgb(
1, 1, 0, 0.75)
assert calc('opacify($translucent-red, 0.3)') == Color.from_rgb(
1, 0, 0, 0.8)
assert calc('transparentize($translucent-red, 0.25)') == Color.from_rgb(
1, 0, 0, 0.25)
assert calc(
"progid:DXImageTransform.Microsoft.gradient(enabled='false', startColorstr='#{ie-hex-str($green)}', endColorstr='#{ie-hex-str($translucent-red)}')"
).render(
) == "progid:DXImageTransform.Microsoft.gradient(enabled='false', startColorstr='#FF00FF00', endColorstr='#80FF0000')"
# String operations
ns.set_variable('$value', Null())
assert_strict_string_eq(calc('e + -resize'), String('e-resize',
quotes=None))
assert_strict_string_eq(calc('"Foo " + Bar'), String('Foo Bar',
quotes='"'))
assert_strict_string_eq(calc('sans- + "serif"'),
String('sans-serif', quotes=None))
assert calc('3px + 4px auto') == List(
[Number(7, "px"), String('auto', quotes=None)])
assert_strict_string_eq(calc('"I ate #{5 + 10} pies!"'),
String('I ate 15 pies!', quotes='"'))
assert_strict_string_eq(calc('"I ate #{$value} pies!"'),
String('I ate pies!', quotes='"'))
def test_comparison_null():
null = Null()
assert null == null
assert null != Number(0)
with pytest.raises(TypeError):
null < null
def first_value_of(*args):
if len(args) == 1 and isinstance(args[0], String):
first = args[0].value.split()[0]
return type(args[0])(first)
args = List.from_maybe_starargs(args)
if len(args):
return args[0]
else:
return Null()
def first_value_of(lst):
if isinstance(lst, QuotedStringValue):
first = lst.value.split()[0]
return type(lst)(first)
elif isinstance(lst, List):
if len(lst):
return lst[0]
else:
return Null()
else:
return lst
def parse_bareword(word):
if word in COLOR_NAMES:
return Color.from_name(word)
elif word == 'null':
return Null()
elif word == 'undefined':
return Undefined()
elif word == 'true':
return Boolean(True)
elif word == 'false':
return Boolean(False)
else:
return String(word, quotes=None)
def from_bareword(cls, word):
if word in COLOR_NAMES:
value = Color.from_name(word)
elif word == 'null':
value = Null()
elif word == 'undefined':
value = Undefined()
elif word == 'true':
value = Boolean(True)
elif word == 'false':
value = Boolean(False)
else:
value = String(word, quotes=None)
return cls(value)
def if_(condition, if_true, if_false=Null()):
return if_true if condition else if_false
def map_get(map, key):
return map.to_dict().get(key, Null())
def add_configuration(options):
# TODO
return Null()
def reset_configuration():
# TODO
return Null()