The abstract parent class of the various selector sequence classes.
All subclasses should implement a `members` method that returns an array of object that respond to `line=` and `filename=`, as well as a `to_a` method that returns an array of strings and script nodes.
The name of the file in which this selector was declared.
@return [String, nil]
The line of the Sass template on which this selector was declared.
@return [Fixnum]
Checks equality between this and another object.
Subclasses should define `#_eql?` rather than overriding this method, which handles checking class equality and hash equality.
@param other [Object] The object to test equality against @return [Boolean] Whether or not this is equal to `other`
# File lib/sass/selector/abstract_sequence.rb, line 57 def eql?(other) other.class == self.class && other.hash == self.hash && _eql?(other) end
Sets the name of the file in which this selector was declared, or `nil` if it was not declared in a file (e.g. on stdin). This also sets the filename for all child selectors.
@param filename [String, nil] @return [String, nil]
# File lib/sass/selector/abstract_sequence.rb, line 35 def filename=(filename) members.each {|m| m.filename = filename} @filename = filename end
Whether or not this selector sequence contains a placeholder selector. Checks recursively.
# File lib/sass/selector/abstract_sequence.rb, line 64 def has_placeholder? @has_placeholder ||= members.any? {|m| m.is_a?(AbstractSequence) ? m.has_placeholder? : m.is_a?(Placeholder)} end
Returns a hash code for this sequence.
Subclasses should define `#_hash` rather than overriding this method, which automatically handles memoizing the result.
@return [Fixnum]
# File lib/sass/selector/abstract_sequence.rb, line 46 def hash @_hash ||= _hash end
Sets the line of the Sass template on which this selector was declared. This also sets the line for all child selectors.
@param line [Fixnum] @return [Fixnum]
# File lib/sass/selector/abstract_sequence.rb, line 24 def line=(line) members.each {|m| m.line = line} @line = line end
Returns the specificity of the selector as an integer. The base is given by {Sass::Selector::SPECIFICITY_BASE}.
@return [Fixnum]
# File lib/sass/selector/abstract_sequence.rb, line 81 def specificity _specificity(members) end
Converts the selector into a string. This is the standard selector string, along with any SassScript interpolation that may exist.
@return [String]
# File lib/sass/selector/abstract_sequence.rb, line 73 def to_s to_a.map {|e| e.is_a?(Sass::Script::Node) ? "\#{#{e.to_sass}}" : e}.join end
# File lib/sass/selector/abstract_sequence.rb, line 87 def _specificity(arr) spec = 0 arr.map {|m| spec += m.is_a?(String) ? 0 : m.specificity} spec end