Class: Middleman::CoreExtensions::Collections::CollectionsExtension

Inherits:
Extension
  • Object
show all
Defined in:
lib/middleman-core/core_extensions/collections.rb

Constant Summary

Constants included from Contracts

Contracts::PATH_MATCHER

Instance Attribute Summary collapse

Attributes inherited from Extension

#app, #options

Instance Method Summary collapse

Methods inherited from Extension

activated_extension, #add_exposed_to_context, #after_build, #after_configuration, #after_extension_activated, after_extension_activated, #before_build, clear_after_extension_callbacks, config, define_setting, expose_to_application, expose_to_config, expose_to_template, global_config, helpers, option, #ready, resources

Methods included from Contracts

#Contract

Constructor Details

#initialize(app, options_hash = {}, &block) ⇒ CollectionsExtension

Returns a new instance of CollectionsExtension.



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# File 'lib/middleman-core/core_extensions/collections.rb', line 37

def initialize(app, options_hash={}, &block)
  super

  @leaves = Set.new
  @collectors_by_name = {}
  @values_by_name = {}

  @collector_roots = []

  @lock = Monitor.new
end

Instance Attribute Details

#leaves ⇒ Object

Returns the value of attribute leaves.



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# File 'lib/middleman-core/core_extensions/collections.rb', line 20

def leaves
  @leaves
end

Instance Method Details

#before_configuration ⇒ Object 



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# File 'lib/middleman-core/core_extensions/collections.rb', line 49

def before_configuration
  @leaves.clear
end

#collector_value(label) ⇒ Object 



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# File 'lib/middleman-core/core_extensions/collections.rb', line 81

def collector_value(label)
  @values_by_name[label]
end

#data_collector ⇒ Object 



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# File 'lib/middleman-core/core_extensions/collections.rb', line 64

def data_collector
  live_collector { |app, _| app.data }
end

#live_collector(&block) ⇒ Object 



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# File 'lib/middleman-core/core_extensions/collections.rb', line 69

def live_collector(&block)
  root = LazyCollectorRoot.new(self)

  @collector_roots << {
    root: root,
    block: block
  }

  root
end

#manipulate_resource_list(resources) ⇒ Object 



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# File 'lib/middleman-core/core_extensions/collections.rb', line 86

def manipulate_resource_list(resources)
  @lock.synchronize do
    @collector_roots.each do |pair|
      dataset = pair[:block].call(app, resources)
      pair[:root].realize!(dataset)
    end

    ctx = StepContext.new(app)
    StepContext.current = ctx

    leaves = @leaves.dup

    @collectors_by_name.each do |k, v|
      @values_by_name[k] = v.value(ctx)
      leaves.delete v
    end

    # Execute code paths
    leaves.each do |v|
      v.value(ctx)
    end

    # Inject descriptors
    results = ctx.descriptors.reduce(resources) do |sum, d|
      d.execute_descriptor(app, sum)
    end

    StepContext.current = nil

    results
  end
end

#register_collector(label, endpoint) ⇒ Object 



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# File 'lib/middleman-core/core_extensions/collections.rb', line 54

def register_collector(label, endpoint)
  @collectors_by_name[label] = endpoint
end

#sitemap_collector ⇒ Object 



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# File 'lib/middleman-core/core_extensions/collections.rb', line 59

def sitemap_collector
  live_collector { |_, resources| resources }
end