Class: JsDuck::CssParser

Inherits:
Object
  • Object
show all
Defined in:
lib/jsduck/css_parser.rb

Instance Method Summary collapse

Constructor Details

#initialize(input, options = {}) ⇒ CssParser

Returns a new instance of CssParser.



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# File 'lib/jsduck/css_parser.rb', line 7

def initialize(input, options = {})
  @lex = Lexer.new(input)
  @doc_parser = DocParser.new
  @docs = []
end

Instance Method Details

#code_block ⇒ Object

<code-block> := <mixin> | <nop>



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# File 'lib/jsduck/css_parser.rb', line 32

def code_block
  if look("@", "mixin")
    mixin
  else
    {:type => :nop}
  end
end

#css_ident ⇒ Object

<css-ident> := <ident> [ “-” <ident> ]*



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# File 'lib/jsduck/css_parser.rb', line 50

def css_ident
  chain = [match(:ident)]
  while look("-", :ident) do
    chain << match("-", :ident)
  end
  return chain.join("-")
end

#look(*args) ⇒ Object 



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# File 'lib/jsduck/css_parser.rb', line 70

def look(*args)
  @lex.look(*args)
end

#match(*args) ⇒ Object

Matches all arguments, returns the value of last match When the whole sequence doesn’t match, throws exception



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# File 'lib/jsduck/css_parser.rb', line 60

def match(*args)
  if look(*args)
    last = nil
    args.length.times { last = @lex.next }
    last
  else
    throw "Expected: " + args.join(", ")
  end
end

#mixin ⇒ Object

<mixin> := “@mixin” <css-ident>



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# File 'lib/jsduck/css_parser.rb', line 41

def mixin
  match("@", "mixin")
  return {
    :type => :css_mixin,
    :name => look(:ident) ? css_ident : nil,
  }
end

#parse ⇒ Object

Parses the whole CSS block and returns same kind of structure that JavaScript parser does.



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# File 'lib/jsduck/css_parser.rb', line 15

def parse
  while !@lex.empty? do
    if look(:doc_comment)
      comment = @lex.next(true)
      @docs << {
        :comment => @doc_parser.parse(comment[:value]),
        :linenr => comment[:linenr],
        :code => code_block
      }
    else
      @lex.next
    end
  end
  @docs
end