class Reply::Reader

• Reply::Reader
• Reference
• Object

Overview

Reader for your REPL.

Create a subclass of it and override methods to customize behavior.

class MyReader < Reply::Reader
  def prompt(io, line_number, color?)
    io << "reply> "
  end
end

Run the REPL with run:

reader = MyReader.new

reader.run do |expression|
  # Eval expression here
  puts " => #{expression}"
end

Or with #read_next:

loop do
  expression = reader.read_next
  break unless expression

  # Eval expression here
  puts " => #{expression}"
end

Defined in:

reader.cr

Constructors

• .new

Instance Method Summary

• #auto_complete(current_word : String, expression_before : String)

  Override to integrate auto-completion.

• #auto_completion_display_entry(io : IO, entry_matched : String, entry_remaining : String)

  Override to customize how entry is displayed.

• #auto_completion_display_selected_entry(io : IO, entry : String)

  Override to customize how the selected entry is displayed.

• #auto_completion_display_title(io : IO, title : String)

  Override to customize how title is displayed.

• #clear_history

  Clear the history and the #history_file.

• #color=(arg)
• #color?(*args, **options)
• #color?(*args, **options, &)
• #continue?(expression : String)

  Override this method to makes the interface continue on multiline, depending of the expression.

• #editor : ExpressionEditor
• #format(expression : String)

  Override to enable reformatting after submitting.

• #highlight(expression : String)

  Override to enable expression highlighting.

• #history : Reply::History
• #history_file

  Override to indicate the Path|String|IO where the history is saved.

• #indentation_level(expression_before_cursor : String)

  Override to return the expected indentation level in function of expression before cursor.

• #line_number : Int32
• #lines(*args, **options)
• #lines(*args, **options, &)
• #output(*args, **options)
• #output(*args, **options, &)
• #output=(arg)
• #prompt(io : IO, line_number : Int32, color? : Bool)

  Override to customize the prompt.

• #read_loop(& : String -> _)
• #read_next(from io : IO = STDIN) : String | Nil
• #reindent_line(line : String)

  Override to enable line re-indenting.

• #reset

  Reset the line number and close auto-completion results.

• #save_in_history?(expression : String)

  Override to select with expression is saved in history.

• #word_delimiters(*args, **options)
• #word_delimiters(*args, **options, &)
• #word_delimiters=(arg)

Constructor Detail

Instance Method Detail