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Contents
require 'jsduck/lexer'
require 'jsduck/doc_parser'
module JsDuck
class CssParser
def initialize(input, options = {})
@lex = Lexer.new(input)
@doc_parser = DocParser.new
@docs = []
end
# Parses the whole CSS block and returns same kind of structure
# that JavaScript parser does.
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
# <code-block> := <mixin> | <nop>
def code_block
if look("@", "mixin")
mixin
else
{:type => :nop}
end
end
# <mixin> := "@mixin" <css-ident>
def mixin
match("@", "mixin")
return {
:type => :css_mixin,
:name => look(:ident) ? css_ident : nil,
}
end
# <css-ident> := <ident> [ "-" <ident> ]*
def css_ident
chain = [match(:ident)]
while look("-", :ident) do
chain << match("-", :ident)
end
return chain.join("-")
end
# Matches all arguments, returns the value of last match
# When the whole sequence doesn't match, throws exception
def match(*args)
if look(*args)
last = nil
args.length.times { last = @lex.next }
last
else
throw "Expected: " + args.join(", ")
end
end
def look(*args)
@lex.look(*args)
end
end
end
Version data entries
23 entries across 23 versions & 1 rubygems