Sass::Script::StringInterpolation

    # File lib/sass/script/string_interpolation.rb, line 12
12:     def initialize(before, mid, after)
13:       @before = before
14:       @mid = mid
15:       @after = after
16:     end

    # File lib/sass/script/string_interpolation.rb, line 58
58:     def children
59:       [@before, @mid, @after].compact
60:     end

    # File lib/sass/script/string_interpolation.rb, line 19
19:     def inspect
20:       "(string_interpolation #{@before.inspect} #{@mid.inspect} #{@after.inspect})"
21:     end

    # File lib/sass/script/string_interpolation.rb, line 24
24:     def to_sass(opts = {})
25:       # We can get rid of all of this when we remove the deprecated :equals context
26:       before_unquote, before_quote_char, before_str = parse_str(@before.to_sass(opts))
27:       after_unquote, after_quote_char, after_str = parse_str(@after.to_sass(opts))
28:       unquote = before_unquote || after_unquote ||
29:         (before_quote_char && !after_quote_char && !after_str.empty?) ||
30:         (!before_quote_char && after_quote_char && !before_str.empty?)
31:       quote_char =
32:         if before_quote_char && after_quote_char && before_quote_char != after_quote_char
33:           before_str.gsub!("\\'", "'")
34:           before_str.gsub!('"', "\\\"")
35:           after_str.gsub!("\\'", "'")
36:           after_str.gsub!('"', "\\\"")
37:           '"'
38:         else
39:           before_quote_char || after_quote_char
40:         end
41: 
42:       res = ""
43:       res << 'unquote(' if unquote
44:       res << quote_char if quote_char
45:       res << before_str
46:       res << '#{' << @mid.to_sass(opts) << '}'
47:       res << after_str
48:       res << quote_char if quote_char
49:       res << ')' if unquote
50:       res
51:     end

    # File lib/sass/script/string_interpolation.rb, line 68
68:     def _perform(environment)
69:       res = ""
70:       before = @before.perform(environment)
71:       res << before.value
72:       mid = @mid.perform(environment)
73:       res << (mid.is_a?(Sass::Script::String) ? mid.value : mid.to_s)
74:       res << @after.perform(environment).value
75:       Sass::Script::String.new(res, before.type)
76:     end

    # File lib/sass/script/string_interpolation.rb, line 80
80:     def parse_str(str)
81:       case str
82:       when /^unquote\((["'])(.*)\11\\)$/
83:         return true, $1, $2
84:       when '""'
85:         return false, nil, ""
86:       when /^(["'])(.*)\11$$/
87:         return false, $1, $2
88:       else
89:         return false, nil, str
90:       end
91:     end