# class Prism::Relocation::CodeUnitColumnsField

A field representing the start and end code unit columns for a specific encoding.

### Attributes

encoding [R]

The associated encoding for the code units.

repository [R]

The repository object that is used for lazily creating a code units cache.

### Public Class Methods

new (repository, encoding)
Source

    # File lib/prism/relocation.rb, line 291
    def initialize(repository, encoding)
      @repository = repository
      @encoding = encoding
      @cache = nil
    end

Initialize a new field with the associated repository and encoding.

### Public Instance Methods

fields (value)
Source

    # File lib/prism/relocation.rb, line 299
    def fields(value)
      {
        start_code_units_column: value.cached_start_code_units_column(cache),
        end_code_units_column: value.cached_end_code_units_column(cache)
      }
    end

Fetches the start and end code units column of a value for a particular encoding.

### Private Instance Methods

cache ()
Source

    # File lib/prism/relocation.rb, line 309
    def cache
      @cache ||= repository.code_units_cache(encoding)
    end

Lazily create a code units cache for the associated encoding.