Class: Props::Base

Inherits:
Object
  • Object
show all
Defined in:
lib/props_template/base.rb

Direct Known Subclasses

BaseWithExtensions

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Base

Returns a new instance of Base.



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# File 'lib/props_template/base.rb', line 11

def initialize
  @commands = [[:push_object]]
  @stream = Oj::StringWriter.new(mode: :rails)
  @scope = nil
end

Instance Method Details

#array!(collection, options = {}) ⇒ Object

todo, add ability to define contents of array



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# File 'lib/props_template/base.rb', line 80

def array!(collection, options = {})
  if @scope.nil?
    @scope = :array
  else
    raise InvalidScopeForArrayError.new('array! expects exclusive use of this block')
  end
  @commands[-1] = [:push_array]

  if !collection.empty?
    handle_collection(collection, options) do |item, index|
      yield item, index
    end
  end

  @scope = :array

  nil
end

#commands_to_json!(commands) ⇒ Object 



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# File 'lib/props_template/base.rb', line 99

def commands_to_json!(commands)
  commands.each do |command|
    @stream.send(*command)
  end
  json = @stream.to_s
  @stream.reset
  json
end

#handle_collection(collection, options) ⇒ Object 



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# File 'lib/props_template/base.rb', line 64

def handle_collection(collection, options)
  all_opts = collection.map do |item|
    refine_item_options(item, options.clone)
  end

  all_opts = refine_all_item_options(all_opts)

  collection.each_with_index do |item, index|
    pass_opts = all_opts[index]
    handle_collection_item(collection, item, index, pass_opts) do
      #todo: remove index?
      yield item, index
    end
  end
end

#handle_collection_item(collection, item, index, options) ⇒ Object 



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# File 'lib/props_template/base.rb', line 54

def handle_collection_item(collection, item, index, options)
  set_block_content!(options) do
    yield
  end
end

#handle_set_block(key, options) ⇒ Object 



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# File 'lib/props_template/base.rb', line 24

def handle_set_block(key, options)
  @commands.push([:push_key, key.to_s])
  set_block_content!(options) do
    yield
  end
end

#refine_all_item_options(all_options) ⇒ Object 



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# File 'lib/props_template/base.rb', line 60

def refine_all_item_options(all_options)
  all_options
end

#refine_item_options(item, options) ⇒ Object 



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# File 'lib/props_template/base.rb', line 50

def refine_item_options(item, options)
  options
end

#result! ⇒ Object 



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# File 'lib/props_template/base.rb', line 108

def result!
  @commands.push([:pop])
  commands_to_json!(@commands)
end

#set!(key, value = nil) ⇒ Object 



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# File 'lib/props_template/base.rb', line 31

def set!(key, value = nil)
  @scope ||= :object
  if @scope == :array
    raise InvalidScopeForObjError.new('Attempted to set! on an array! scope')
  end
  if block_given?
    handle_set_block(key, value) do
      yield
    end
  else
    @commands.push([:push_key, key.to_s])
    @commands.push([:push_value, value])
  end

  @scope = :object

  nil
end

#set_block_content!(options = {}) ⇒ Object 



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# File 'lib/props_template/base.rb', line 17

def set_block_content!(options = {})
  @commands.push([:push_object])
  @scope = nil
  yield
  @commands.push([:pop])
end