Class: SassC::FunctionsHandler

Inherits:
Object
  • Object
show all
Defined in:
lib/sassc/functions_handler.rb

Defined Under Namespace

Classes: FunctionWrapper

Instance Method Summary collapse

Constructor Details

#initialize(options) ⇒ FunctionsHandler

Returns a new instance of FunctionsHandler.



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# File 'lib/sassc/functions_handler.rb', line 3

def initialize(options)
  @options = options
end

Instance Method Details

#setup(native_options) ⇒ Object 



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# File 'lib/sassc/functions_handler.rb', line 7

def setup(native_options)
  @callbacks = {}
  @function_names = {}

  list = Native.make_function_list(Script.custom_functions.count)

  functs = FunctionWrapper.extend(Script::Functions)
  functs.options = @options

  Script.custom_functions.each_with_index do |custom_function, i|
    @callbacks[custom_function] = FFI::Function.new(:pointer, [:pointer, :pointer]) do |s_args, cookie|
      length = Native.list_get_length(s_args)

      v = Native.list_get_value(s_args, 0)
      v = Native.string_get_value(v).dup

      s = Script::String.new(Script::String.unquote(v), Script::String.type(v))

      value = functs.send(custom_function, s)

      if value
        value = Script::String.new(Script::String.unquote(value.to_s), value.type)
        value.to_native
      else
        Script::String.new("").to_native
      end
    end

    @function_names[custom_function] = Script.formatted_function_name(custom_function)

    callback = Native.make_function(
      @function_names[custom_function],
      @callbacks[custom_function],
      nil
    )

    Native::function_set_list_entry(list, i, callback)
  end

  Native::option_set_c_functions(native_options, list)
end