Class: Yap::Shell::BuiltinCommand

Inherits:
Command
  • Object
show all
Defined in:
lib/yap/shell/commands.rb

Instance Attribute Summary

Attributes inherited from Command

#args, #heredoc, #line, #str, #world

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Command

#initialize, #to_s

Constructor Details

This class inherits a constructor from Yap::Shell::Command

Class Method Details

.===(other) ⇒ Object 



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# File 'lib/yap/shell/commands.rb', line 48

def self.===(other)
  self.builtins.keys.include?(other.split(' ').first.to_sym) || super
end

.add(command, &action) ⇒ Object 



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# File 'lib/yap/shell/commands.rb', line 60

def self.add(command, &action)
  builtins.merge!(command.to_sym => action)
end

.builtins ⇒ Object 



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# File 'lib/yap/shell/commands.rb', line 52

def self.builtins
  @builtins ||= {
    builtins: lambda { |stdout:, **| stdout.puts @builtins.keys.sort },
    exit: lambda { |code = 0, **| exit(code.to_i) },
    fg: lambda{ |**| :resume },
  }
end

Instance Method Details

#execute(stdin:, stdout:, stderr:) ⇒ Object 



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# File 'lib/yap/shell/commands.rb', line 64

def execute(stdin:, stdout:, stderr:)
  action = self.class.builtins.fetch(str.to_sym){ raise("Missing proc for builtin: '#{builtin}' in #{str.inspect}") }
  action.call world:world, args:args, stdin:stdin, stdout:stdout, stderr:stderr
end

#to_executable_str ⇒ Object

Raises:

  • (NotImplementedError) 


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# File 'lib/yap/shell/commands.rb', line 73

def to_executable_str
  raise NotImplementedError, "#to_executable_str is not implemented on BuiltInCommand"
end

#type ⇒ Object 



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# File 'lib/yap/shell/commands.rb', line 69

def type
  :BuiltinCommand
end