module Orocos::RobyPlugin::TaskScripting::ScriptEngineExtension

# File lib/orocos/roby/task_scripting.rb, line 8
def initialize_copy(original)
    super

    @data_readers = original.data_readers.dup
    @data_writers = original.data_writers.dup
end

# File lib/orocos/roby/task_scripting.rb, line 15
def prepare(task)
    super if defined? super

    data_readers.each do |name, reader_def|
        reader_def[1] = task.data_reader(*reader_def[0])
    end
    data_writers.each do |name, writer_def|
        writer_def[1] = task.data_writer(*writer_def[0])
        writer_def[2] = writer_def[1].new_sample
        writer_def[2].zero!
    end
end

# File lib/orocos/roby/task_scripting.rb, line 28
def script_extensions(name, *args, &block)
    catch(:no_match) { super if defined? super }
    if !args.empty? || block
        throw :no_match
    end

    case name.to_s
    when /^(\w+)_reader$/
        name = $1.to_sym
        if reader = data_readers[name]
            return reader[1]
        else
            raise NoMethodError, "no data reader called #{name} defined: got #{data_readers.keys.map(&:inspect).join(", ")}"
        end

    when /^(\w+)_writer$/
        name = $1.to_sym
        if writer = data_writers[name]
            return writer[1]
        else
            raise NoMethodError, "has no data writer called #{name} defined: got #{data_writers.keys.map(&:inspect).join(", ")}"
        end

    when /^write_(\w+)$/
        name = $1.to_sym
        if writer = data_writers[name]
            writer[1].write(writer[2])
        else
            raise NoMethodError, "no data writer called #{name} defined: got #{data_writers.keys.map(&:inspect).join(", ")}"
        end


    else
        if reader = data_readers[name]
            value = reader[1].read
            return value
        elsif writer = data_writers[name]
            return writer[2]
        else
            throw :no_match
        end
    end
end