Class: Hexp::CssSelector::Parser

Inherits:
Object
  • Object
show all
Defined in:
lib/hexp/css_selector/parser.rb

Overview

A parser of CSS selectors

This is a wrapper around the SASS parser. This way we are isolated from changes in SASS. It also makes things easier should we decide to switch to a different parsing library or roll our own parser. We only use a fraction of the functionality of SASS so this might be worth it, although at this point I want to avoid reinventing that wheel.

The classes that make up the parse tree largely mimic the ones from SASS, like CommaSequence, SimpleSequence, Class, Id, etc. By having them in our own namespace however we can easily add Hexp-specific helper functions.

Class Method Summary (collapse)

Instance Method Summary (collapse)

Constructor Details

- (Parser) initialize(selector)

A new instance of Parser



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# File 'lib/hexp/css_selector/parser.rb', line 16

def initialize(selector)
  @selector = selector.freeze
end

Class Method Details

+ (Object) call(selector) 



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# File 'lib/hexp/css_selector/parser.rb', line 24

def self.call(selector)
  new(selector).parse
end

Instance Method Details

- (Object) parse 



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# File 'lib/hexp/css_selector/parser.rb', line 20

def parse
  rewrite_comma_sequence(SassParser.call(@selector))
end