Module: Sass::Script::Functions

Defined in:
lib/sass/script/functions.rb

Overview

Methods in this module are accessible from the SassScript context. For example, you can write

$color = hsl(120deg, 100%, 50%)

and it will call #hsl.

The following functions are provided:

RGB Functions

#rgb : Converts an rgb(red, green, blue) triplet into a color.

#rgba : Converts an rgba(red, green, blue, alpha) quadruplet into a color.

#red : Gets the red component of a color.

#green : Gets the green component of a color.

#blue : Gets the blue component of a color.

#mix : Mixes two colors together.

HSL Functions

#hsl : Converts an hsl(hue, saturation, lightness) triplet into a color.

#hsla : Converts an hsla(hue, saturation, lightness, alpha) quadruplet into a color.

#hue : Gets the hue component of a color.

#saturation : Gets the saturation component of a color.

#lightness : Gets the lightness component of a color.

#adjust-hue : Changes the hue of a color.

#lighten : Makes a color lighter.

#darken : Makes a color darker.

#saturate : Makes a color more saturated.

#desaturate : Makes a color less saturated.

#grayscale : Converts a color to grayscale.

#complement : Returns the complement of a color.

Opacity Functions

#alpha / #opacity : Gets the alpha component (opacity) of a color.

#rgba : Sets the alpha component of a color.

#opacify / #fade-in : Makes a color more opaque.

#transparentize / #fade-out : Makes a color more transparent.

String Functions

#unquote : Removes the quotes from a string.

#quote : Adds quotes to a string.

Number Functions

#percentage : Converts a unitless number to a percentage.

#round : Rounds a number to the nearest whole number.

#ceil : Rounds a number up to the nearest whole number.

#floor : Rounds a number down to the nearest whole number.

#abs : Returns the absolute value of a number.

Introspection Functions

#type_of : Returns the type of a value.

#unit : Returns the units associated with a number.

#unitless : Returns whether a number has units or not.

#comparable : Returns whether two numbers can be added or compared.

These functions are described in more detail below.

Adding Custom Functions

New Sass functions can be added by adding Ruby methods to this module. For example:

module Sass::Script::Functions
  def reverse(string)
    assert_type string, :String
    Sass::Script::String.new(string.value.reverse)
  end
end

There are a few things to keep in mind when modifying this module. First of all, the arguments passed are Literal objects. Literal objects are also expected to be returned. This means that Ruby values must be unwrapped and wrapped.

Most Literal objects support the value accessor for getting their Ruby values. Color objects, though, must be accessed using rgb, red, green, or blue.

Second, making Ruby functions accessible from Sass introduces the temptation to do things like database access within stylesheets. This is generally a bad idea; since Sass files are by default only compiled once, dynamic code is not a great fit.

If you really, really need to compile Sass on each request, first make sure you have adequate caching set up. Then you can use Engine to render the code, using the options parameter to pass in data that can be accessed from your Sass functions.

Within one of the functions in this module, methods of EvaluationContext can be used.

Caveats

When creating new Literal objects within functions, be aware that it's not safe to call #to_s (or other methods that use the string representation) on those objects without first setting the #options attribute.

Defined Under Namespace

Classes: EvaluationContext

Instance Method Summary collapse

Instance Method Details

#abs(value) ⇒ Number

Finds the absolute value of a number.

Examples:

abs(10px) => 10px
abs(-10px) => 10px

Parameters:

  • value (Number) —

    The number

Returns:

  • (Number) —

    The absolute value

Raises:



807
808
809
 
# File 'lib/sass/script/functions.rb', line 807

def abs(value)
  numeric_transformation(value) {|n| n.abs}
end

#adjust_hue(color, degrees) ⇒ Color

Changes the hue of a color while retaining the lightness and saturation. Takes a color and a number of degrees (usually between -360deg and 360deg), and returns a color with the hue rotated by that value.

Examples:

adjust-hue(hsl(120, 30%, 90%), 60deg) => hsl(180, 30%, 90%)
adjust-hue(hsl(120, 30%, 90%), 060deg) => hsl(60, 30%, 90%)
adjust-hue(#811, 45deg) => #886a11

Parameters:

Returns:

Raises:

  • (ArgumentError) —

    If color isn't a color, or number isn't a number



566
567
568
569
570
 
# File 'lib/sass/script/functions.rb', line 566

def adjust_hue(color, degrees)
  assert_type color, :Color
  assert_type degrees, :Number
  color.with(:hue => color.hue + degrees.value)
end

#alpha(color) ⇒ Number

Returns the alpha component (opacity) of a color. This is 1 unless otherwise specified.

This function also supports the proprietary Microsoft alpha(opacity=20) syntax.

Parameters:

Returns:

Raises:

  • (ArgumentError) —

    If color isn't a color

See Also:



425
426
427
428
429
430
431
432
433
434
435
 
# File 'lib/sass/script/functions.rb', line 425

def alpha(*args)
  if args.all? do |a|
      a.is_a?(Sass::Script::String) && a.type == :identifier &&
        a.value =~ /^[a-zA-Z]+\s*=/
    end
    # Support the proprietary MS alpha() function
    return Sass::Script::String.new("alpha(#{args.map {|a| a.to_s}.join(", ")})")
  end

  opacity(*args)
end

#blue(color) ⇒ Number

Returns the blue component of a color.

Parameters:

Returns:

Raises:

  • (ArgumentError) —

    If color isn't a color



361
362
363
364
 
# File 'lib/sass/script/functions.rb', line 361

def blue(color)
  assert_type color, :Color
  Sass::Script::Number.new(color.blue)
end

#ceil(value) ⇒ Number

Rounds a number up to the nearest whole number.

Examples:

ciel(10.4px) => 11px
ciel(10.6px) => 11px

Parameters:

  • value (Number) —

    The number

Returns:

  • (Number) —

    The rounded number

Raises:



783
784
785
 
# File 'lib/sass/script/functions.rb', line 783

def ceil(value)
  numeric_transformation(value) {|n| n.ceil}
end

#comparable(number1, number2) ⇒ Bool

Returns true if two numbers are similar enough to be added, subtracted, or compared.

Examples:

comparable(2px, 1px) => true
comparable(100px, 3em) => false
comparable(10cm, 3mm) => true

Parameters:

Returns:

  • (Bool) —

    indicating if the numbers can be compared.

Raises:

  • (ArgumentError) —

    if number1 or number2 aren't numbers



743
744
745
746
747
 
# File 'lib/sass/script/functions.rb', line 743

def comparable(number1, number2)
  assert_type number1, :Number
  assert_type number2, :Number
  Sass::Script::Bool.new(number1.comparable_to?(number2))
end

#complement(color) ⇒ Color

Returns the complement of a color. This is identical to adjust-hue(color, 180deg).

Parameters:

Returns:

Raises:

  • (ArgumentError) —

    if color isn't a color

See Also:



654
655
656
 
# File 'lib/sass/script/functions.rb', line 654

def complement(color)
  adjust_hue color, Number.new(180)
end

#darken(color, amount) ⇒ Color

Makes a color darker. Takes a color and an amount between 0% and 100%, and returns a color with the lightness decreased by that value.

Examples:

darken(hsl(25, 100%, 80%), 30%) => hsl(25, 100%, 50%)
darken(#800, 20%) => #200

Parameters:

Returns:

Raises:

  • (ArgumentError) —

    If color isn't a color, or number isn't a number between 0% and 100%

See Also:



516
517
518
 
# File 'lib/sass/script/functions.rb', line 516

def darken(color, amount)
  adjust(color, amount, :lightness, 0..100, :-, "%")
end

#desaturate(color, amount) ⇒ Color

Makes a color less saturated. Takes a color and an amount between 0% and 100%, and returns a color with the saturation decreased by that value.

Examples:

desaturate(hsl(120, 30%, 90%), 20%) => hsl(120, 10%, 90%)
desaturate(#855, 20%) => #726b6b

Parameters:

Returns:

Raises:

  • (ArgumentError) —

    If color isn't a color, or number isn't a number between 0% and 100%

See Also:



550
551
552
 
# File 'lib/sass/script/functions.rb', line 550

def desaturate(color, amount)
  adjust(color, amount, :saturation, 0..100, :-, "%")
end

#floor(value) ⇒ Number

Rounds down to the nearest whole number.

Examples:

floor(10.4px) => 10px
floor(10.6px) => 10px

Parameters:

  • value (Number) —

    The number

Returns:

  • (Number) —

    The rounded number

Raises:



795
796
797
 
# File 'lib/sass/script/functions.rb', line 795

def floor(value)
  numeric_transformation(value) {|n| n.floor}
end

#grayscale(color) ⇒ Color

Converts a color to grayscale. This is identical to desaturate(color, 100%).

Parameters:

Returns:

Raises:

  • (ArgumentError) —

    if color isn't a color

See Also:



643
644
645
 
# File 'lib/sass/script/functions.rb', line 643

def grayscale(color)
  desaturate color, Number.new(100)
end

#green(color) ⇒ Number

Returns the green component of a color.

Parameters:

Returns:

Raises:

  • (ArgumentError) —

    If color isn't a color



351
352
353
354
 
# File 'lib/sass/script/functions.rb', line 351

def green(color)
  assert_type color, :Color
  Sass::Script::Number.new(color.green)
end

#hsl(hue, saturation, lightness) ⇒ Color

Creates a Color object from hue, saturation, and lightness. Uses the algorithm from the CSS3 spec.

Parameters:

  • hue (Number) —

    The hue of the color. Should be between 0 and 360 degrees, inclusive

  • saturation (Number) —

    The saturation of the color. Must be between 0% and 100%, inclusive

  • lightness (Number) —

    The lightness of the color. Must be between 0% and 100%, inclusive

Returns:

  • (Color) —

    The resulting color

Raises:

  • (ArgumentError) —

    if saturation or lightness are out of bounds

See Also:



297
298
299
 
# File 'lib/sass/script/functions.rb', line 297

def hsl(hue, saturation, lightness)
  hsla(hue, saturation, lightness, Number.new(1))
end

#hsla(hue, saturation, lightness, alpha) ⇒ Color

Creates a Color object from hue, saturation, and lightness, as well as an alpha channel indicating opacity. Uses the algorithm from the CSS3 spec.

Parameters:

  • hue (Number) —

    The hue of the color. Should be between 0 and 360 degrees, inclusive

  • saturation (Number) —

    The saturation of the color. Must be between 0% and 100%, inclusive

  • lightness (Number) —

    The lightness of the color. Must be between 0% and 100%, inclusive

  • alpha (Number) —

    The opacity of the color. Must be between 0 and 1, inclusive

Returns:

  • (Color) —

    The resulting color

Raises:

  • (ArgumentError) —

    if saturation, lightness, or alpha are out of bounds

See Also:



316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
 
# File 'lib/sass/script/functions.rb', line 316

def hsla(hue, saturation, lightness, alpha)
  assert_type hue, :Number
  assert_type saturation, :Number
  assert_type lightness, :Number
  assert_type alpha, :Number

  unless (0..1).include?(alpha.value)
    raise ArgumentError.new("Alpha channel #{alpha.value} must be between 0 and 1")
  end

  original_s = saturation
  original_l = lightness
  # This algorithm is from http://www.w3.org/TR/css3-color#hsl-color
  h, s, l = [hue, saturation, lightness].map { |a| a.value }
  raise ArgumentError.new("Saturation #{s} must be between 0% and 100%") unless (0..100).include?(s)
  raise ArgumentError.new("Lightness #{l} must be between 0% and 100%") unless (0..100).include?(l)

  Color.new(:hue => h, :saturation => s, :lightness => l, :alpha => alpha.value)
end

#hue(color) ⇒ Number

Returns the hue component of a color.

See the CSS3 HSL specification.

Calculated from RGB where necessary via this algorithm.

Parameters:

Returns:

  • (Number) —

    between 0deg and 360deg

Raises:

  • (ArgumentError) —

    if color isn't a color

See Also:



376
377
378
379
 
# File 'lib/sass/script/functions.rb', line 376

def hue(color)
  assert_type color, :Color
  Sass::Script::Number.new(color.hue, ["deg"])
end

#lighten(color, amount) ⇒ Color

Makes a color lighter. Takes a color and an amount between 0% and 100%, and returns a color with the lightness increased by that value.

Examples:

lighten(hsl(0, 0%, 0%), 30%) => hsl(0, 0, 30)
lighten(#800, 20%) => #e00

Parameters:

Returns:

Raises:

  • (ArgumentError) —

    If color isn't a color, or number isn't a number between 0% and 100%

See Also:



499
500
501
 
# File 'lib/sass/script/functions.rb', line 499

def lighten(color, amount)
  adjust(color, amount, :lightness, 0..100, :+, "%")
end

#lightness(color) ⇒ Number

Returns the hue component of a color.

See the CSS3 HSL specification.

Calculated from RGB where necessary via this algorithm.

Parameters:

Returns:

  • (Number) —

    between 0% and 100%

Raises:

  • (ArgumentError) —

    if color isn't a color

See Also:



408
409
410
411
 
# File 'lib/sass/script/functions.rb', line 408

def lightness(color)
  assert_type color, :Color
  Sass::Script::Number.new(color.lightness, ["%"])
end

#mix(color1, color2, weight = 50%) ⇒ Color

Mixes together two colors. Specifically, takes the average of each of the RGB components, optionally weighted by the given percentage. The opacity of the colors is also considered when weighting the components.

The weight specifies the amount of the first color that should be included in the returned color. The default, 50%, means that half the first color and half the second color should be used. 25% means that a quarter of the first color and three quarters of the second color should be used.

Examples:

mix(#f00, #00f) => #7f007f
mix(#f00, #00f, 25%) => #3f00bf
mix(rgba(255, 0, 0, 0.5), #00f) => rgba(63, 0, 191, 0.75)

Parameters:

  • color1 (Color)
  • color2 (Color)
  • weight (Number) (defaults to: 50%) —

    between 0% and 100%

Returns:

Raises:

  • (ArgumentError) —

    if color1 or color2 aren't colors, or weight isn't a number between 0% and 100%



595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
 
# File 'lib/sass/script/functions.rb', line 595

def mix(color1, color2, weight = Number.new(50))
  assert_type color1, :Color
  assert_type color2, :Color
  assert_type weight, :Number

  unless (0..100).include?(weight.value)
    raise ArgumentError.new("Weight #{weight} must be between 0% and 100%")
  end

  # This algorithm factors in both the user-provided weight
  # and the difference between the alpha values of the two colors
  # to decide how to perform the weighted average of the two RGB values.
  #
  # It works by first normalizing both parameters to be within [-1, 1],
  # where 1 indicates "only use color1", -1 indicates "only use color 0",
  # and all values in between indicated a proportionately weighted average.
  #
  # Once we have the normalized variables w and a,
  # we apply the formula (w + a)/(1 + w*a)
  # to get the combined weight (in [-1, 1]) of color1.
  # This formula has two especially nice properties:
  #
  #   * When either w or a are -1 or 1, the combined weight is also that number
  #     (cases where w * a == -1 are undefined, and handled as a special case).
  #
  #   * When a is 0, the combined weight is w, and vice versa
  #
  # Finally, the weight of color1 is renormalized to be within [0, 1]
  # and the weight of color2 is given by 1 minus the weight of color1.
  p = weight.value/100.0
  w = p*2 - 1
  a = color1.alpha - color2.alpha

  w1 = (((w * a == -1) ? w : (w + a)/(1 + w*a)) + 1)/2.0
  w2 = 1 - w1

  rgb = color1.rgb.zip(color2.rgb).map {|v1, v2| v1*w1 + v2*w2}
  alpha = color1.alpha*p + color2.alpha*(1-p)
  Color.new(rgb + [alpha])
end

#opacify(color, amount) ⇒ Color Also known as: fade_in

Makes a color more opaque. Takes a color and an amount between 0 and 1, and returns a color with the opacity increased by that value.

Examples:

opacify(rgba(0, 0, 0, 0.5), 0.1) => rgba(0, 0, 0, 0.6)
opacify(rgba(0, 0, 17, 0.8), 0.2) => #001

Parameters:

Returns:

Raises:

  • (ArgumentError) —

    If color isn't a color, or number isn't a number between 0 and 1

See Also:



463
464
465
 
# File 'lib/sass/script/functions.rb', line 463

def opacify(color, amount)
  adjust(color, amount, :alpha, 0..1, :+)
end

#opacity(color) ⇒ Number

Returns the alpha component (opacity) of a color. This is 1 unless otherwise specified.

Parameters:

Returns:

Raises:

  • (ArgumentError) —

    If color isn't a color

See Also:



445
446
447
448
 
# File 'lib/sass/script/functions.rb', line 445

def opacity(color)
  assert_type color, :Color
  Sass::Script::Number.new(color.alpha)
end

#percentage(value) ⇒ Number

Converts a decimal number to a percentage.

Examples:

percentage(100px / 50px) => 200%

Parameters:

  • value (Number) —

    The decimal number to convert to a percentage

Returns:

Raises:

  • (ArgumentError) —

    If value isn't a unitless number



756
757
758
759
760
761
 
# File 'lib/sass/script/functions.rb', line 756

def percentage(value)
  unless value.is_a?(Sass::Script::Number) && value.unitless?
    raise ArgumentError.new("#{value.inspect} is not a unitless number")
  end
  Sass::Script::Number.new(value.value * 100, ['%'])
end

#quote(str) ⇒ String

Add quotes to a string if the string isn't quoted, or returns the same string if it is.

Examples:

quote("foo") => "foo"
quote(foo) => "foo"

Parameters:

Returns:

Raises:

  • (ArgumentError) —

    if str isn't a string

See Also:



683
684
685
686
 
# File 'lib/sass/script/functions.rb', line 683

def quote(str)
  assert_type str, :String
  Sass::Script::String.new(str.value, :string)
end

#red(color) ⇒ Number

Returns the red component of a color.

Parameters:

Returns:

Raises:

  • (ArgumentError) —

    If color isn't a color



341
342
343
344
 
# File 'lib/sass/script/functions.rb', line 341

def red(color)
  assert_type color, :Color
  Sass::Script::Number.new(color.red)
end

#rgb(red, green, blue) ⇒ Color

Creates a Color object from red, green, and blue values.

Parameters:

  • red (Number) —

    A number between 0 and 255 inclusive, or between 0% and 100% inclusive

  • green (Number) —

    A number between 0 and 255 inclusive, or between 0% and 100% inclusive

  • blue (Number) —

    A number between 0 and 255 inclusive, or between 0% and 100% inclusive

Returns:

See Also:



221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
 
# File 'lib/sass/script/functions.rb', line 221

def rgb(red, green, blue)
  assert_type red, :Number
  assert_type green, :Number
  assert_type blue, :Number

  Color.new([red, green, blue].map do |c|
      v = c.value
      if c.numerator_units == ["%"] && c.denominator_units.empty?
        next v * 255 / 100.0 if (0..100).include?(v)
        raise ArgumentError.new("Color value #{c} must be between 0% and 100% inclusive")
      else
        next v if (0..255).include?(v)
        raise ArgumentError.new("Color value #{v} must be between 0 and 255 inclusive")
      end
    end)
end

#rgba(red, green, blue, alpha) ⇒ Color #rgba(color, alpha) ⇒ Color

Overloads:

  • #rgba(red, green, blue, alpha) ⇒ Color

    Creates a Color object from red, green, and blue values, as well as an alpha channel indicating opacity.

    Parameters:

    • red (Number) —

      A number between 0 and 255 inclusive

    • green (Number) —

      A number between 0 and 255 inclusive

    • blue (Number) —

      A number between 0 and 255 inclusive

    • alpha (Number) —

      A number between 0 and 1

    Returns:

  • #rgba(color, alpha) ⇒ Color

    Sets the opacity of a color.

    Examples:

    rgba(#102030, 0.5) => rgba(16, 32, 48, 0.5)
rgba(blue, 0.2)    => rgba(0, 0, 255, 0.2)

    Parameters:

    • color (Color)
    • alpha (Number) —

      A number between 0 and 1

    Returns:

See Also:



264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
 
# File 'lib/sass/script/functions.rb', line 264

def rgba(*args)
  case args.size
  when 2
    color, alpha = args

    assert_type color, :Color
    assert_type alpha, :Number

    unless (0..1).include?(alpha.value)
      raise ArgumentError.new("Alpha channel #{alpha.value} must be between 0 and 1 inclusive")
    end

    color.with(:alpha => alpha.value)
  when 4
    red, green, blue, alpha = args
    rgba(rgb(red, green, blue), alpha)
  else
    raise ArgumentError.new("wrong number of arguments (#{args.size} for 4)")
  end
end

#round(value) ⇒ Number

Rounds a number to the nearest whole number.

Examples:

round(10.4px) => 10px
round(10.6px) => 11px

Parameters:

  • value (Number) —

    The number

Returns:

  • (Number) —

    The rounded number

Raises:



771
772
773
 
# File 'lib/sass/script/functions.rb', line 771

def round(value)
  numeric_transformation(value) {|n| n.round}
end

#saturate(color, amount) ⇒ Color

Makes a color more saturated. Takes a color and an amount between 0% and 100%, and returns a color with the saturation increased by that value.

Examples:

saturate(hsl(120, 30%, 90%), 20%) => hsl(120, 50%, 90%)
saturate(#855, 20%) => #9e3f3f

Parameters:

Returns:

Raises:

  • (ArgumentError) —

    If color isn't a color, or number isn't a number between 0% and 100%

See Also:



533
534
535
 
# File 'lib/sass/script/functions.rb', line 533

def saturate(color, amount)
  adjust(color, amount, :saturation, 0..100, :+, "%")
end

#saturation(color) ⇒ Number

Returns the saturation component of a color.

See the CSS3 HSL specification.

Calculated from RGB where necessary via this algorithm.

Parameters:

Returns:

  • (Number) —

    between 0% and 100%

Raises:

  • (ArgumentError) —

    if color isn't a color

See Also:



392
393
394
395
 
# File 'lib/sass/script/functions.rb', line 392

def saturation(color)
  assert_type color, :Color
  Sass::Script::Number.new(color.saturation, ["%"])
end

#transparentize(color, amount) ⇒ Color Also known as: fade_out

Makes a color more transparent. Takes a color and an amount between 0 and 1, and returns a color with the opacity decreased by that value.

Examples:

transparentize(rgba(0, 0, 0, 0.5), 0.1) => rgba(0, 0, 0, 0.4)
transparentize(rgba(0, 0, 0, 0.8), 0.2) => rgba(0, 0, 0, 0.6)

Parameters:

Returns:

Raises:

  • (ArgumentError) —

    If color isn't a color, or number isn't a number between 0 and 1

See Also:



481
482
483
 
# File 'lib/sass/script/functions.rb', line 481

def transparentize(color, amount)
  adjust(color, amount, :alpha, 0..1, :-)
end

#type_of(obj) ⇒ String

Inspects the type of the argument, returning it as an unquoted string.

Examples:

type-of(100px)  => number
type-of(asdf)   => string
type-of("asdf") => string
type-of(true)   => bool
type-of(#fff)   => color
type-of(blue)   => color

Parameters:

  • obj (Literal) —

    The object to inspect

Returns:

  • (String) —

    The unquoted string name of the literal's type



699
700
701
 
# File 'lib/sass/script/functions.rb', line 699

def type_of(obj)
  Sass::Script::String.new(obj.class.name.gsub(/Sass::Script::/,'').downcase)
end

#unit(number) ⇒ String

Inspects the unit of the number, returning it as a quoted string. Complex units are sorted in alphabetical order by numerator and denominator.

Examples:

unit(100) => ""
unit(100px) => "px"
unit(3em) => "em"
unit(10px * 5em) => "em*px"
unit(10px * 5em / 30cm / 1rem) => "em*px/cm*rem"

Parameters:

  • number (Literal) —

    The number to inspect

Returns:

  • (String) —

    The unit(s) of the number

Raises:

  • (ArgumentError) —

    if number isn't a number



715
716
717
718
 
# File 'lib/sass/script/functions.rb', line 715

def unit(number)
  assert_type number, :Number
  Sass::Script::String.new(number.unit_str, :string)
end

#unitless(number) ⇒ Bool

Inspects the unit of the number, returning a boolean indicating if it is unitless.

Examples:

unitless(100) => true
unitless(100px) => false

Parameters:

  • number (Literal) —

    The number to inspect

Returns:

  • (Bool) —

    Whether or not the number is unitless

Raises:

  • (ArgumentError) —

    if number isn't a number



728
729
730
731
 
# File 'lib/sass/script/functions.rb', line 728

def unitless(number)
  assert_type number, :Number
  Sass::Script::Bool.new(number.unitless?)
end

#unquote(str) ⇒ String

Removes quotes from a string if the string is quoted, or returns the same string if it's not.

Examples:

unquote("foo") => foo
unquote(foo) => foo

Parameters:

Returns:

Raises:

  • (ArgumentError) —

    if str isn't a string

See Also:



668
669
670
671
 
# File 'lib/sass/script/functions.rb', line 668

def unquote(str)
  assert_type str, :String
  Sass::Script::String.new(str.value, :identifier)
end