Class: LibStorj::ArgForwardingTask

Inherits:
Object
  • Object
show all
Includes:
Rake::DSL
Defined in:
lib/ruby-libstorj/arg_forwarding_task.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(target_name, alias_names: [nil], args_deps_hash:, &block) ⇒ ArgForwardingTask

Returns a new instance of ArgForwardingTask.



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# File 'lib/ruby-libstorj/arg_forwarding_task.rb', line 13

def initialize(target_name, alias_names: [nil], args_deps_hash:, &block)
  @alias_tasks = {}
  @target_task = nil


  if alias_names.nil? || alias_names.empty? || alias_names.reject {|t| !t}.empty?
    unless block
      throw ArgumentError.new 'either a block or at least one alias is required for `ArgFowardingTask.new`'
    end

    block_wrapper = Proc.new do |task, args|
      deps = args_deps_hash.values.flatten
      yield task, args, deps
    end

    # if no aliases, just register the target
    #
    #:call-seq:
    #      ... v-- We're using this signature --v
    #      Rake::Task.define_task task_name, arguments => dependencies
    #(see https://github.com/ruby/rake/blob/68ef9140c11d083d8bb7ee5da5b0543e3a7df73d/lib/rake/dsl_definition.rb#L28)
    @target_task = task(target_name, args_deps_hash, &block_wrapper)
  else
    if block_given?
      block_wrapper = Proc.new do |task, args|
        deps = args_deps_hash.values.flatten
        yield task, args, deps
      end

      @target_task = task(target_name, args_deps_hash, &block_wrapper)
    else
      @target_task = task(target_name, args_deps_hash)
    end
    alias_names.flatten.each do |task_name|
      @alias_tasks[task_name] = task(task_name, args_deps_hash) do |t, args|
        @target_task.invoke(*args.to_a)
      end
    end
  end
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(name, *args, &block) ⇒ Object 



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# File 'lib/ruby-libstorj/arg_forwarding_task.rb', line 54

def method_missing(name, *args, &block)
  @target_task.method(name).call(*args, &block)
end

Instance Attribute Details

#alias_tasks ⇒ Object (readonly)

Returns the value of attribute alias_tasks.



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# File 'lib/ruby-libstorj/arg_forwarding_task.rb', line 11

def alias_tasks
  @alias_tasks
end

#target_task ⇒ Object (readonly)

Returns the value of attribute target_task.



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# File 'lib/ruby-libstorj/arg_forwarding_task.rb', line 10

def target_task
  @target_task
end