class Sass::Script::Interpolation

A SassScript object representing ‘#{}` interpolation outside a string.

@see StringInterpolation

Public Class Methods

new(before, mid, after, wb, wa, originally_text = false) click to toggle source

Interpolation in a property is of the form ‘before #{mid} after`.

@param before [Node] The SassScript before the interpolation @param mid [Node] The SassScript within the interpolation @param after [Node] The SassScript after the interpolation @param wb [Boolean] Whether there was whitespace between ‘before` and `#{` @param wa [Boolean] Whether there was whitespace between `}` and `after` @param originally_text [Boolean]

Whether the original format of the interpolation was plain text,
not an interpolation.
This is used when converting back to SassScript.
# File lib/sass/script/interpolation.rb, line 17
def initialize(before, mid, after, wb, wa, originally_text = false)
  @before = before
  @mid = mid
  @after = after
  @whitespace_before = wb
  @whitespace_after = wa
  @originally_text = originally_text
end

Public Instance Methods

children() click to toggle source

Returns the three components of the interpolation, ‘before`, `mid`, and `after`.

@return [Array<Node>] @see initialize @see Node#children

# File lib/sass/script/interpolation.rb, line 49
def children
  [@before, @mid, @after].compact
end
deep_copy() click to toggle source

@see Node#deep_copy

# File lib/sass/script/interpolation.rb, line 54
def deep_copy
  node = dup
  node.instance_variable_set('@before', @before.deep_copy) if @before
  node.instance_variable_set('@mid', @mid.deep_copy)
  node.instance_variable_set('@after', @after.deep_copy) if @after
  node
end
inspect() click to toggle source

@return [String] A human-readable s-expression representation of the interpolation

# File lib/sass/script/interpolation.rb, line 27
def inspect
  "(interpolation #{@before.inspect} #{@mid.inspect} #{@after.inspect})"
end
to_sass(opts = {}) click to toggle source

@see Node#to_sass

# File lib/sass/script/interpolation.rb, line 32
def to_sass(opts = {})
  res = ""
  res << @before.to_sass(opts) if @before
  res << ' ' if @before && @whitespace_before
  res << '#{' unless @originally_text
  res << @mid.to_sass(opts)
  res << '}' unless @originally_text
  res << ' ' if @after && @whitespace_after
  res << @after.to_sass(opts) if @after
  res
end

Protected Instance Methods

_perform(environment) click to toggle source

Evaluates the interpolation.

@param environment [Sass::Environment] The environment in which to evaluate the SassScript @return [Sass::Script::String] The SassScript string that is the value of the interpolation

# File lib/sass/script/interpolation.rb, line 68
def _perform(environment)
  res = ""
  res << @before.perform(environment).to_s if @before
  res << " " if @before && @whitespace_before
  val = @mid.perform(environment)
  res << (val.is_a?(Sass::Script::String) ? val.value : val.to_s)
  res << " " if @after && @whitespace_after
  res << @after.perform(environment).to_s if @after
  opts(Sass::Script::String.new(res))
end