Class: Vedeu::Views::Chars Private

Inherits:
Repositories::Collection show all
Defined in:
lib/vedeu/views/chars.rb

Overview

This class is part of a private API. You should avoid using this class if possible, as it may be removed or be changed in the future.

A collection of Cells::Char instances.

Class Method Summary collapse

Constructor Details

This class inherits a constructor from Vedeu::Repositories::Collection

Class Method Details

.coerce(collection = [], parent = nil, name = nil) ⇒ Vedeu::Views::Chars

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Parameters:

  • collection (void) (defaults to: [])
  • parent (Vedeu::Views::Stream) (defaults to: nil)
  • name (NilClass|Symbol|String) (defaults to: nil)

Returns:

Raises:

  • (Vedeu::Error::InvalidSyntax) —

    When the value given for an argument or parameter cannot be used because it is not valid for the use case, unsupported or the method expects a different type.



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# File 'lib/vedeu/views/chars.rb', line 18

def self.coerce(collection = [], parent = nil, name = nil)
  if collection.is_a?(Vedeu::Views::Chars)
    collection

  elsif collection.is_a?(Array)
    return new(collection, parent, name) if collection.empty?

    coerced_collection = []
    collection.each do |element|
      coerced_collection << element if element.is_a?(Vedeu::Cells::Char)
    end

    new(coerced_collection, parent, name)

  elsif collection.is_a?(Vedeu::Views::Stream)
    Vedeu::Views::Chars.coerce(collection.value,
                               collection.parent,
                               collection.name)

  elsif collection.is_a?(String)
    return new([], parent, name) if collection.empty?

    if parent && parent.attributes
      new_collection = Vedeu::DSL::Text.new(collection,
                                            parent.attributes).chars

      new(new_collection, parent, name)
    end

  else
    fail Vedeu::Error::InvalidSyntax,
         'Cannot coerce for Vedeu::View::Chars, as collection is ' \
         'unrecognised.'

  end
end