Class: InlineTemplates::BufferWrapper

Inherits:
BlankObject show all
Defined in:
lib/inline_templates/buffer_wrapper.rb

Constant Summary collapse

IMPLICIT_CAST_METHODS = 
::Set.new([ :to_int, :to_ary, :to_str, :to_sym, :to_hash, :to_proc, :to_io ])

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from BlankObject

drop_methods, make_blank

Constructor Details

#initialize(object, buffer) ⇒ BufferWrapper

Returns a new instance of BufferWrapper.



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# File 'lib/inline_templates/buffer_wrapper.rb', line 7

def initialize(object, buffer)
  @object = object
  @buffer = buffer
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/inline_templates/buffer_wrapper.rb', line 19

def method_missing(name, *args, &block)
  args.map! &BufferWrapper.method(:unwrap)
  block = BufferWrapper.create_proxy_proc(block, @buffer) unless block.nil?

  result = @object.__send__(name, *args, &block)

  return result if IMPLICIT_CAST_METHODS.include?(name.to_sym)

  BufferWrapper.wrap result, @buffer
end

Class Method Details

.create_proxy_proc(nested, buffer) ⇒ Object 



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# File 'lib/inline_templates/buffer_wrapper.rb', line 50

def self.create_proxy_proc(nested, buffer)
  original_self = self

  proc do |*args, &block|
    args.map! { |arg| BufferWrapper.wrap arg, buffer }
    block = BufferWrapper.create_proxy_proc(block, buffer) unless block.nil?

    if self.equal? original_self
      nested.call *args, &block
    else
      buffer.inlinetemplates_instance_exec self, *args, &nested
    end
  end
end

.unwrap(obj) ⇒ Object 



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# File 'lib/inline_templates/buffer_wrapper.rb', line 42

def self.unwrap(obj)
  if obj.respond_to? :__inline_templates_object
    obj.__inline_templates_object
  else
    obj
  end
end

.wrap(result, buffer) ⇒ Object 



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# File 'lib/inline_templates/buffer_wrapper.rb', line 34

def self.wrap(result, buffer)
  if result.class == ::NilClass || result.class == ::TrueClass || result.class == ::FalseClass
    result
  else
    BufferWrapper.new(self.unwrap(result), buffer)
  end
end

Instance Method Details

#__inline_templates_object ⇒ Object 



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# File 'lib/inline_templates/buffer_wrapper.rb', line 12

def __inline_templates_object; @object; end

#respond_to_missing?(name, include_private = false) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/inline_templates/buffer_wrapper.rb', line 30

def respond_to_missing?(name, include_private = false)
  @object.respond_to?(name, include_private)
end

#~ ⇒ Object 



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# File 'lib/inline_templates/buffer_wrapper.rb', line 14

def ~
  @buffer.inlinetemplates_append @object
  @object
end