def __init__(self,
scss_vars=None,
scss_opts=None,
scss_files=None,
super_selector='',
live_errors=False,
library=None,
func_registry=None,
search_paths=None):
self.super_selector = super_selector
self._scss_vars = {}
if scss_vars:
calculator = Calculator()
for var_name, value in scss_vars.items():
if isinstance(value, six.string_types):
scss_value = calculator.evaluate_expression(value)
if scss_value is None:
# TODO warning?
scss_value = String.unquoted(value)
else:
scss_value = value
self._scss_vars[var_name] = scss_value
self._scss_opts = scss_opts or {}
self._scss_files = scss_files
self._library = func_registry or library
self._search_paths = search_paths
# If true, swallow compile errors and embed them in the output instead
self.live_errors = live_errors
def __init__(
self, scss_vars=None, scss_opts=None, scss_files=None,
super_selector='', live_errors=False,
library=None, func_registry=None,
search_paths=None):
self.super_selector = super_selector
self._scss_vars = {}
if scss_vars:
calculator = Calculator()
for var_name, value in scss_vars.items():
if isinstance(value, six.string_types):
scss_value = calculator.evaluate_expression(value)
if scss_value is None:
# TODO warning?
scss_value = String.unquoted(value)
else:
scss_value = value
self._scss_vars[var_name] = scss_value
self._scss_opts = scss_opts or {}
self._scss_files = scss_files
self._library = func_registry or library
self._search_paths = search_paths
# If true, swallow compile errors and embed them in the output instead
self.live_errors = live_errors
def __init__(self, is_sass=False):
# TODO it would be lovely to get these out of here, somehow
self.namespace = Namespace(variables=_default_scss_vars)
self.compiler = Compiler(namespace=self.namespace)
self.compilation = self.compiler.make_compilation()
self.legacy_compiler_options = {}
self.source_file = SourceFile.from_string('', '<shell>', is_sass=is_sass)
self.calculator = Calculator(self.namespace)
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 __init__(self, is_sass=False):
# TODO it would be lovely to get these out of here, somehow
self.namespace = Namespace(variables=_default_scss_vars)
self.compiler = Compiler(namespace=self.namespace)
self.compilation = self.compiler.make_compilation()
self.legacy_compiler_options = {}
self.source_file = SourceFile.from_string('', '<shell>', is_sass=is_sass)
self.calculator = Calculator(self.namespace)
def test_functions(calc):
calc = Calculator(CoreExtension.namespace).calculate
assert calc('grayscale(red)') == Color.from_rgb(0.5, 0.5, 0.5)
assert calc('grayscale(1)') == String(
'grayscale(1)',
quotes=None) # Misusing css built-in functions (with scss counterpart)
assert calc('skew(1)') == String(
'skew(1)', quotes=None) # Missing css-only built-in functions
with pytest.raises(SassEvaluationError):
calc('unitless("X")') # Misusing non-css built-in scss funtions
def test_parse_special_functions():
ns = CoreExtension.namespace.derive()
calc = Calculator(ns).calculate
# expression() allows absolutely any old garbage inside
# TODO we can't deal with an unmatched { due to the block locator, but ruby
# can
for gnarly_expression in (
"not ~* remotely *~ valid {syntax}",
"expression( ( -0 - floater.offsetHeight + ( document"
".documentElement.clientHeight ? document.documentElement"
".clientHeight : document.body.clientHeight ) + ( ignoreMe"
" = document.documentElement.scrollTop ? document"
".documentElement.scrollTop : document.body.scrollTop ) ) +"
" 'px' )"):
expr = 'expression(' + gnarly_expression + ')'
assert calc(expr).render() == expr
# alpha() doubles as a special function if it contains opacity=n, the IE
# filter syntax
assert calc('alpha(black)') == Number(1)
assert calc('alpha(opacity = 5)') == Function('opacity=5', 'alpha')
assert calc('alpha(opacity = 5)').render() == 'alpha(opacity=5)'
# url() allows both an opaque URL and a Sass expression, based on some
# heuristics
ns.set_variable('$foo', String.unquoted('foo'))
assert calc('url($foo)').render() == "url(foo)"
assert calc('url(#{$foo}foo)').render() == "url(foofoo)"
assert calc('url($foo + $foo)').render() == "url(foofoo)"
# TODO this one doesn't work if $foo has quotes; Url.render() tries to
# escape them. which i'm not sure is wrong, but we're getting into
# territory where it's obvious bad output...
assert calc('url($foo + #{$foo})').render() == "url(foo + foo)"
assert calc('url(foo #{$foo} foo)').render() == "url(foo foo foo)"
with pytest.raises(SassSyntaxError):
# Starting with #{} means it's a url, which can't contain spaces
calc('url(#{$foo} foo)')
with pytest.raises(SassSyntaxError):
# Or variables
calc('url(#{$foo}$foo)')
with pytest.raises(SassSyntaxError):
# This looks like a URL too
calc('url(foo#{$foo} foo)')
class SassRepl(object):
def __init__(self, is_sass=False):
# TODO it would be lovely to get these out of here, somehow
self.namespace = Namespace(variables=_default_scss_vars)
self.compiler = Compiler(namespace=self.namespace)
self.compilation = self.compiler.make_compilation()
self.legacy_compiler_options = {}
self.source_file = SourceFile.from_string('', '<shell>', is_sass=is_sass)
self.calculator = Calculator(self.namespace)
def __call__(self, s):
# TODO this is kind of invasive; surely it's possible to do this
# without calling only private methods
from pprint import pformat
if s in ('exit', 'quit'):
raise KeyboardInterrupt
for s in s.split(';'):
s = self.source_file.prepare_source(s.strip())
if not s:
continue
elif s.startswith('@'):
scope = None
properties = []
children = deque()
rule = SassRule(self.source_file, namespace=self.namespace, legacy_compiler_options=self.legacy_compiler_options, properties=properties)
block = UnparsedBlock(rule, 1, s, None)
code, name = (s.split(None, 1) + [''])[:2]
if code == '@option':
self.compilation._at_options(self.calculator, rule, scope, block)
continue
elif code == '@import':
self.compilation._at_import(self.calculator, rule, scope, block)
continue
elif code == '@include':
final_cont = ''
self.compilation._at_include(self.calculator, rule, scope, block)
code = self.compilation._print_properties(properties).rstrip('\n')
if code:
final_cont += code
if children:
self.compilation.children.extendleft(children)
self.compilation.parse_children()
code = self.compilation._create_css(self.compilation.rules).rstrip('\n')
if code:
final_cont += code
yield final_cont
continue
elif s == 'ls' or s.startswith('show(') or s.startswith('show ') or s.startswith('ls(') or s.startswith('ls '):
m = re.match(r'(?:show|ls)(\()?\s*([^,/\\) ]*)(?:[,/\\ ]([^,/\\ )]+))*(?(1)\))', s, re.IGNORECASE)
if m:
name = m.group(2)
code = m.group(3)
name = name and name.strip().rstrip('s') # remove last 's' as in functions
code = code and code.strip()
ns = self.namespace
if not name:
yield pformat(list(sorted(['vars', 'options', 'mixins', 'functions'])))
elif name in ('v', 'var', 'variable'):
variables = dict(ns._variables)
if code == '*':
pass
elif code:
variables = dict((k, v) for k, v in variables.items() if code in k)
else:
variables = dict((k, v) for k, v in variables.items() if not k.startswith('$--'))
yield pformat(variables)
elif name in ('o', 'opt', 'option'):
opts = self.legacy_compiler_options
if code == '*':
pass
elif code:
opts = dict((k, v) for k, v in opts.items() if code in k)
else:
opts = dict((k, v) for k, v in opts.items())
yield pformat(opts)
elif name in ('m', 'mix', 'mixin', 'f', 'func', 'funct', 'function'):
if name.startswith('m'):
funcs = dict(ns._mixins)
elif name.startswith('f'):
funcs = dict(ns._functions)
if code == '*':
pass
elif code:
funcs = dict((k, v) for k, v in funcs.items() if code in k[0])
else:
pass
# TODO print source when possible
yield pformat(funcs)
continue
elif s.startswith('$') and (':' in s or '=' in s):
prop, value = [a.strip() for a in _prop_split_re.split(s, 1)]
prop = self.calculator.do_glob_math(prop)
value = self.calculator.calculate(value)
self.namespace.set_variable(prop, value)
continue
# TODO respect compress?
try:
yield(self.calculator.calculate(s).render())
except (SyntaxError, SassEvaluationError) as e:
print("%s" % e, file=sys.stderr)
def calc(expression):
return Calculator(CoreExtension.namespace).evaluate_expression(expression)
def calc():
return Calculator(CompassExtension.namespace).evaluate_expression
class SassRepl(object):
def __init__(self, is_sass=False):
# TODO it would be lovely to get these out of here, somehow
self.namespace = Namespace(variables=_default_scss_vars)
self.compiler = Compiler(namespace=self.namespace)
self.compilation = self.compiler.make_compilation()
self.legacy_compiler_options = {}
self.source_file = SourceFile.from_string('',
'<shell>',
is_sass=is_sass)
self.calculator = Calculator(self.namespace)
def __call__(self, s):
# TODO this is kind of invasive; surely it's possible to do this
# without calling only private methods
from pprint import pformat
if s in ('exit', 'quit'):
raise KeyboardInterrupt
for s in s.split(';'):
s = self.source_file.prepare_source(s.strip())
if not s:
continue
elif s.startswith('@'):
scope = None
properties = []
children = deque()
rule = SassRule(
self.source_file,
namespace=self.namespace,
legacy_compiler_options=self.legacy_compiler_options,
properties=properties)
block = UnparsedBlock(rule, 1, s, None)
code, name = (s.split(None, 1) + [''])[:2]
if code == '@option':
self.compilation._at_options(self.calculator, rule, scope,
block)
continue
elif code == '@import':
self.compilation._at_import(self.calculator, rule, scope,
block)
continue
elif code == '@include':
final_cont = ''
self.compilation._at_include(self.calculator, rule, scope,
block)
code = self.compilation._print_properties(
properties).rstrip('\n')
if code:
final_cont += code
if children:
self.compilation.children.extendleft(children)
self.compilation.parse_children()
code = self.compilation._create_css(
self.compilation.rules).rstrip('\n')
if code:
final_cont += code
yield final_cont
continue
elif s == 'ls' or s.startswith('show(') or s.startswith(
'show ') or s.startswith('ls(') or s.startswith('ls '):
m = re.match(
r'(?:show|ls)(\()?\s*([^,/\\) ]*)(?:[,/\\ ]([^,/\\ )]+))*(?(1)\))',
s, re.IGNORECASE)
if m:
name = m.group(2)
code = m.group(3)
name = name and name.strip().rstrip(
's') # remove last 's' as in functions
code = code and code.strip()
ns = self.namespace
if not name:
yield pformat(
list(
sorted(
['vars', 'options', 'mixins',
'functions'])))
elif name in ('v', 'var', 'variable'):
variables = dict(ns._variables)
if code == '*':
pass
elif code:
variables = dict((k, v)
for k, v in variables.items()
if code in k)
else:
variables = dict((k, v)
for k, v in variables.items()
if not k.startswith('$--'))
yield pformat(variables)
elif name in ('o', 'opt', 'option'):
opts = self.legacy_compiler_options
if code == '*':
pass
elif code:
opts = dict(
(k, v) for k, v in opts.items() if code in k)
else:
opts = dict((k, v) for k, v in opts.items())
yield pformat(opts)
elif name in ('m', 'mix', 'mixin', 'f', 'func', 'funct',
'function'):
if name.startswith('m'):
funcs = dict(ns._mixins)
elif name.startswith('f'):
funcs = dict(ns._functions)
if code == '*':
pass
elif code:
funcs = dict((k, v) for k, v in funcs.items()
if code in k[0])
else:
pass
# TODO print source when possible
yield pformat(funcs)
continue
elif s.startswith('$') and (':' in s or '=' in s):
prop, value = [a.strip() for a in _prop_split_re.split(s, 1)]
prop = self.calculator.do_glob_math(prop)
value = self.calculator.calculate(value)
self.namespace.set_variable(prop, value)
continue
# TODO respect compress?
try:
yield (self.calculator.calculate(s).render())
except (SyntaxError, SassEvaluationError) as e:
print("%s" % e, file=sys.stderr)
def calc():
return Calculator().evaluate_expression
