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Contents
require 'thread'
module Nokogiri
module CSS
class Parser < GeneratedTokenizer
@cache_on = true
@cache = {}
@mutex = Mutex.new
class << self
attr_accessor :cache_on
alias :cache_on? :cache_on
alias :set_cache :cache_on=
def [] string
return unless @cache_on
@mutex.synchronize { @cache[string] }
end
def []= string, value
return value unless @cache_on
@mutex.synchronize { @cache[string] = value }
end
def clear_cache
@mutex.synchronize { @cache = {} }
end
def without_cache &block
tmp = @cache_on
@cache_on = false
block.call
@cache_on = tmp
end
###
# Parse this CSS selector in +selector+. Returns an AST.
def parse selector
@warned ||= false
unless @warned
$stderr.puts('Nokogiri::CSS::Parser.parse is deprecated, call Nokogiri::CSS.parse()')
@warned = true
end
new.parse selector
end
end
def initialize namespaces = {}
@namespaces = namespaces
super()
end
alias :parse :scan_str
def xpath_for string, options={}
key = string + options[:ns].to_s
v = self.class[key]
return v if v
args = [
options[:prefix] || '//',
options[:visitor] || XPathVisitor.new
]
self.class[key] = parse(string).map { |ast|
ast.to_xpath(*args)
}
end
def on_error error_token_id, error_value, value_stack
after = value_stack.compact.last
raise SyntaxError.new("unexpected '#{error_value}' after '#{after}'")
end
end
end
end
Version data entries
6 entries across 6 versions & 1 rubygems