Module: Kernel

Defined in:
lib/symbolic/plugins/var_name.rb,
lib/symbolic/extensions/kernel.rb

Overview

This is a simple module to give the name of the Ruby variable to the Symbolic::Variable

x = var #=> x = var :name => 'x')

It can also name multiple variables (but with no options then):

x, y = vars

This works with caller, and then need to be called directly

Instance Method Summary collapse

Instance Method Details

#_var ⇒ Object 



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# File 'lib/symbolic/plugins/var_name.rb', line 8

alias :_var :var

#var(options = {}, &proc) ⇒ Object 



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# File 'lib/symbolic/plugins/var_name.rb', line 9

def var(options={}, &proc)
  unless options.has_key? :name
    file, ln = caller[0].split(':')

    options.merge!(
    :name => File.open(file) { |f|
      f.each_line.take(ln.to_i)[-1]
    }.match(/
      \s*([[:word:]]+)
      \s*=
      \s*var/x
    ) {
      $1
    })
  end
  _var(options, &proc)
end

#vars ⇒ Object 



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# File 'lib/symbolic/plugins/var_name.rb', line 27

def vars
  file, ln = caller[0].split(':')

  File.open(file) { |f|
    f.each_line.take(ln.to_i)[-1]
  }.match(/
    ((?:\s*[[:word:]]+?,?)+)
    \s*=
    \s*vars/x
  ) {
    $1
  }.scan(/([[:word:]]+)/).map { |capture|
    _var(:name => capture[0])
  }
end