Module: VimMate::Requirer

Defined in:
lib/vim_mate/requirer.rb

Overview

This module contains methods to help when requiring files that could not be installed on the user computer.

Class Method Summary collapse

Class Method Details

.raise_load_error_if ⇒ Object

Raise a LoadError if the provided block returns true

Raises:

  • (LoadError) 


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# File 'lib/vim_mate/requirer.rb', line 64

def self.raise_load_error_if
  raise LoadError, "Requirer cannot continue"  if yield
end

.require_exit(file) ⇒ Object

Exit the program with a nice message if the specified file cannot be required



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# File 'lib/vim_mate/requirer.rb', line 56

def self.require_exit(file)
  require file
rescue LoadError
  puts "Module #{file} is required to run this program"
  exit
end

.require_if(file, to_return_on_error = false) ⇒ Object

Runs the provided block if the file can be required. If it can’t, return the value of to_return_on_error



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# File 'lib/vim_mate/requirer.rb', line 32

def self.require_if(file, to_return_on_error = false)
  begin
    require file
  rescue LoadError
    to_return_on_error
  else
    yield
  end
end

.require_not_if(file, to_return_on_success = false) ⇒ Object

Runs the provided block if the file cannot be required. If it can, return the value of to_return_on_success



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# File 'lib/vim_mate/requirer.rb', line 44

def self.require_not_if(file, to_return_on_success = false)
  begin
    require file
  rescue LoadError
    yield
  else
    to_return_on_success
  end
end