Class: Ruber::World::MutableDocumentList

Inherits:
DocumentList show all
Defined in:
lib/ruber/world/document_list.rb

Overview

A DocumentList which allows to change the contents of the list.

Instance Method Summary collapse

Methods inherited from DocumentList

#==, #[], #document_for_file, #document_for_file?, #document_for_url, #document_for_url?, #document_with_name, #document_with_name?, #documents_with_file, #each, #empty?, #eql?, #hash, #size

Methods included from Enumerable

#find!

Constructor Details

#initialize(docs = []) ⇒ MutableDocumentList

Returns a new instance of MutableDocumentList.

Parameters:

  • docs (Array<Document>, DocumentList) (defaults to: []) —

    the documents to insert in the list when created. Further changes to docs won’t change the new instance and vice versa



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# File 'lib/ruber/world/document_list.rb', line 280

def initialize docs = []
  docs = docs.document_array if docs.is_a? DocumentList 
  @documents = docs.dup
end

Instance Method Details

#add(*docs) ⇒ MutableDocumentList

Note:

this method doesn’t check for duplicate documents. While having multiple copies of the same document shouldn’t cause troubles, it’s better to avoid them. To do so, either check beforehand that docs contains no duplicates and no document already in the list, or use #uniq! afterwards

Adds documents to the list

Parameters:

Returns:



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# File 'lib/ruber/world/document_list.rb', line 318

def add *docs
  docs.flatten!
  @documents.insert -1, *docs
  self
end

#clear ⇒ MutableDocumentList

Removes all the elements from the list

Returns:



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# File 'lib/ruber/world/document_list.rb', line 362

def clear
  @documents.clear
  self
end

#clone ⇒ MutableDocumentList

Override of @Object#clone@

Returns:



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# File 'lib/ruber/world/document_list.rb', line 297

def clone
  res = self.class.new self
  if frozen?
    res.freeze 
    res.document_array.freeze
  end
  res
end

#delete_if {|doc| ... } ⇒ MutableDocumentList

Removes from the list all documents for which the block returns true

Yield Parameters:

  • doc (Document) —

    the documents in the list

Yield Returns:

  • (Boolean) —

    true for documents which should be removed from the list and false otherwise

Returns:



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# File 'lib/ruber/world/document_list.rb', line 375

def delete_if &blk
  @documents.delete_if &blk
  self
end

#dup ⇒ MutableDocumentList

Override of @Object#dup@

Returns:



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# File 'lib/ruber/world/document_list.rb', line 289

def dup
  self.class.new self
end

#merge!(other, remove_duplicates = true) ⇒ MutableDocumentList

Adds the contents of another array or Ruber::World::MutableDocumentList to the list

The documents from the other list will be added at the end of this list.

Parameters:

  • other (Array<Document>, DocumentList) —

    the list whose contents should be added to this list contents

  • remove_duplicates (Boolean) (defaults to: true) —

    if true, after adding the contents of other to the list, #uniq! will be called to ensure there are no duplicates. If false, #uniq! won’t be called

Returns:



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# File 'lib/ruber/world/document_list.rb', line 336

def merge! other, remove_duplicates = true
  if other.is_a? DocumentList
    @documents.concat other.document_array
  else @documents.concat other
  end
  uniq! if remove_duplicates
  self
end

#remove(doc) ⇒ Document?

Removes a document from the list

If the given document isn’t in the list, nothing is done

Parameters:

  • doc (Document) —

    the document to remove

Returns:

  • (Document, nil) —

    the removed document or nil if no document was removed



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# File 'lib/ruber/world/document_list.rb', line 353

def remove doc
  @documents.delete doc
end

#uniq! ⇒ MutableDocumentList

Ensures that the list doesn’t contain duplicates

After calling this method, the list won’t contain the same document in multiple places

Returns:



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# File 'lib/ruber/world/document_list.rb', line 387

def uniq!
  @documents.uniq!
  self
end