Class: TableStructure::Iterator

Inherits:
Object
  • Object
show all
Defined in:
lib/table_structure/iterator.rb

Instance Method Summary collapse

Constructor Details

#initialize(schema, header: { context: nil }, row_type: :array, **deprecated_options) ⇒ Iterator

Returns a new instance of Iterator.



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# File 'lib/table_structure/iterator.rb', line 5

def initialize(
  schema,
  header: { context: nil },
  row_type: :array,
  **deprecated_options
)
  if deprecated_options.key?(:header_omitted)
    header_omitted = deprecated_options[:header_omitted]
    warn "[TableStructure] `header_omitted: #{!!header_omitted}` option has been deprecated. Use `header: #{!header_omitted}` option instead."
    header = !header_omitted
  end

  if deprecated_options.key?(:header_context)
    header_context = deprecated_options[:header_context]
    warn '[TableStructure] `:header_context` option has been deprecated. Use `header: { context: ... }` option instead.'
    header = { context: header_context }
  end

  if deprecated_options.key?(:result_type)
    warn '[TableStructure] `:result_type` option has been deprecated. Use `:row_type` option instead.'
    row_type = deprecated_options[:result_type]
  end

  unless schema.is_a?(Schema)
    raise ::TableStructure::Error, "Must be use Schema. #{schema}"
  end

  @schema = schema
  @options = {
    header: header,
    row_type: row_type
  }
end

Instance Method Details

#iterate(items, **deprecated_options, &block) ⇒ Object 



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# File 'lib/table_structure/iterator.rb', line 39

def iterate(
  items,
  **deprecated_options,
  &block
)
  header = @options[:header]
  row_type = @options[:row_type]

  if deprecated_options.key?(:header)
    header = deprecated_options[:header]
    warn '[TableStructure] Use :header option on initialize method.'
  end

  if deprecated_options.key?(:header_omitted)
    header_omitted = deprecated_options[:header_omitted]
    warn "[TableStructure] `header_omitted: #{!!header_omitted}` option has been deprecated. Use `header: #{!header_omitted}` option instead."
    header = !header_omitted
  end

  if deprecated_options.key?(:header_context)
    header_context = deprecated_options[:header_context]
    warn '[TableStructure] `:header_context` option has been deprecated. Use `header: { context: ... }` option instead.'
    header = { context: header_context }
  end

  if deprecated_options.key?(:row_type)
    row_type = deprecated_options[:row_type]
    warn '[TableStructure] Use :row_type option on initialize method.'
  end

  if deprecated_options.key?(:result_type)
    warn '[TableStructure] `:result_type` option has been deprecated. Use `:row_type` option instead.'
    row_type = deprecated_options[:result_type]
  end

  items = enumerize(items)

  enum =
    Table::Iterator
    .new(
      Table.new(@schema, row_type: row_type),
      header: header
    )
    .iterate(items)

  if block_given?
    enum =
      enum
      .lazy
      .map { |row| block.call(row) }
  end

  enum
end