Class: TableStructure::Table

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

Constant Summary collapse

DEFAULT_ROW_BUILDERS = 
{
  _to_hash_: Utils::TypedProc.new(
    types: :hash
  ) do |values, keys|
    keys.map.with_index { |key, i| [key || i, values[i]] }.to_h
  end
}.freeze

Instance Method Summary collapse

Constructor Details

#initialize(schema, row_type: :array) {|_self| ... } ⇒ Table

Returns a new instance of Table.

Yields:

  • (_self)

Yield Parameters:



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# File 'lib/table_structure/table.rb', line 13

def initialize(schema, row_type: :array)
  @header_row_generator = schema.create_header_row_generator
  @data_row_generator = schema.create_data_row_generator

  row_builders =
    DEFAULT_ROW_BUILDERS
    .merge(schema.row_builders)
    .select { |_k, v| v.typed?(row_type) }
    .values

  unless row_builders.empty?
    row_build_task = proc do |row|
      row.values = row_builders.reduce(row.values) do |values, builder|
        builder.call(values, row.keys, row.context, schema.context)
      end
      row
    end
    @header_row_generator.compose(row_build_task)
    @data_row_generator.compose(row_build_task)
  end

  yield self if block_given?
end

Instance Method Details

#body(contexts) ⇒ Object 



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# File 'lib/table_structure/table.rb', line 41

def body(contexts)
  ::Enumerator.new do |y|
    contexts.each { |context| y << @data_row_generator.call(context).values }
  end
end

#header(context: nil) ⇒ Object 



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# File 'lib/table_structure/table.rb', line 37

def header(context: nil)
  @header_row_generator.call(context).values
end