Class | Sass::Tree::RuleNode |
In: |
lib/sass/css.rb
lib/sass/tree/rule_node.rb |
Parent: | Object |
A static node reprenting a CSS rule.
@see Sass::Tree
PARENT | = | '&' | The character used to include the parent selector @private |
parsed_rules | [RW] |
The CSS selectors for this rule, parsed for
commas and parent-references. It‘s only set once {Tree::Node#perform} has been called.
It‘s an array of arrays of arrays. The first level of arrays represents distinct lines in the Sass file; the second level represents comma-separated selectors; the third represents structure within those selectors, currently only parent-refs (represented by `:parent`). For example, &.foo, bar, baz, bip, &.bop, bup would be [[[:parent, "foo"], ["bar"], ["baz"]], [["bip"], [:parent, "bop"], ["bup"]]] @return [Array<Array<Array<String|Symbol>>>] |
rules | [RW] |
The CSS selectors for this rule. Each string is a
selector line, and the lines are meant to be separated by commas. For
example,
foo, bar, baz, bip, bop, bup would be ["foo, bar, baz", "bip, bop, bup"] @return [Array<String>] |
Compares the contents of two rules.
@param other [Object] The object to compare with @return [Boolean] Whether or not this node and the other object
are the same
# File lib/sass/tree/rule_node.rb, line 60 60: def ==(other) 61: self.class == other.class && rules == other.rules && super 62: end
@return [Boolean] Whether or not this rule is continued on the next line
# File lib/sass/tree/rule_node.rb, line 72 72: def continued? 73: @rules.last[-1] == ?, 74: end
Computes the CSS for the rule.
@param tabs [Fixnum] The level of indentation for the CSS @param super_rules [Array<Array<String>>] The rules for the parent node
(see \{#rules}), or `nil` if there are no parents
@return [String] The resulting CSS @raise [Sass::SyntaxError] if the rule has no parents but uses `&`
# File lib/sass/tree/rule_node.rb, line 83 83: def to_s(tabs, super_rules = nil) 84: resolved_rules = resolve_parent_refs(super_rules) 85: 86: properties = [] 87: sub_rules = [] 88: 89: rule_separator = style == :compressed ? ',' : ', ' 90: line_separator = [:nested, :expanded].include?(style) ? ",\n" : rule_separator 91: rule_indent = ' ' * (tabs - 1) 92: per_rule_indent, total_indent = [:nested, :expanded].include?(style) ? [rule_indent, ''] : ['', rule_indent] 93: 94: total_rule = total_indent + resolved_rules.map do |line| 95: per_rule_indent + line.join(rule_separator) 96: end.join(line_separator) 97: 98: children.each do |child| 99: next if child.invisible? 100: if child.is_a? RuleNode 101: sub_rules << child 102: else 103: properties << child 104: end 105: end 106: 107: to_return = '' 108: if !properties.empty? 109: old_spaces = ' ' * (tabs - 1) 110: spaces = ' ' * tabs 111: if @options[:line_comments] && style != :compressed 112: to_return << "#{old_spaces}/* line #{line}" 113: 114: if filename 115: relative_filename = if @options[:css_filename] 116: begin 117: Pathname.new(filename).relative_path_from( 118: Pathname.new(File.dirname(@options[:css_filename]))).to_s 119: rescue ArgumentError 120: nil 121: end 122: end 123: relative_filename ||= filename 124: to_return << ", #{relative_filename}" 125: end 126: 127: to_return << " */\n" 128: end 129: 130: if style == :compact 131: properties = properties.map { |a| a.to_s(1) }.select{|a| a && a.length > 0}.join(' ') 132: to_return << "#{total_rule} { #{properties} }\n" 133: elsif style == :compressed 134: properties = properties.map { |a| a.to_s(1) }.select{|a| a && a.length > 0}.join(';') 135: to_return << "#{total_rule}{#{properties}}" 136: else 137: properties = properties.map { |a| a.to_s(tabs + 1) }.select{|a| a && a.length > 0}.join("\n") 138: end_props = (style == :expanded ? "\n" + old_spaces : ' ') 139: to_return << "#{total_rule} {\n#{properties}#{end_props}}\n" 140: end 141: end 142: 143: tabs += 1 unless properties.empty? || style != :nested 144: sub_rules.each do |sub| 145: to_return << sub.to_s(tabs, resolved_rules) 146: end 147: 148: to_return 149: end
@see Node#to_sass
# File lib/sass/css.rb, line 26 26: def to_sass(tabs, opts = {}) 27: name = rules.first 28: name = "\\" + name if name[0] == ?: 29: str = "\n#{' ' * tabs}#{name}#{children.any? { |c| c.is_a? PropNode } ? "\n" : ''}" 30: 31: children.each do |child| 32: str << "#{child.to_sass(tabs + 1, opts)}" 33: end 34: 35: str 36: end
Runs any SassScript that may be embedded in the rule, and parses the selectors for commas.
@param environment [Sass::Environment] The lexical environment containing
variable and mixin values
# File lib/sass/tree/rule_node.rb, line 158 158: def perform!(environment) 159: @parsed_rules = @rules.map {|r| parse_selector(interpolate(r, environment))} 160: super 161: end