Class: Konfig::Evaluator

Inherits:
Object
  • Object
show all
Defined in:
lib/konfig/evaluator.rb

Overview

Used by Konfig::Store to evaluate inline code pulled from configuration files.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(data) ⇒ Evaluator

Set up the evaluator

Parameters:

  • data (Hash) —

    data to be available inline code



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# File 'lib/konfig/evaluator.rb', line 11

def initialize(data)
  @data = data
end

Instance Attribute Details

#data ⇒ Object

Returns the value of attribute data.



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# File 'lib/konfig/evaluator.rb', line 7

def data
  @data
end

Instance Method Details

#names_by_value(a) ⇒ Hash

Converts an options-style nested array into a hash for easy name lookup

Parameters:

  • a (Array) —

    an array like [[‘name’, ‘val’]]

Returns:

  • (Hash) —

    a hash like { val => name }



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# File 'lib/konfig/evaluator.rb', line 26

def names_by_value(a)
  a = @data[a] if a.is_a?(String) || a.is_a?(Symbol)
  Hash[ a.map { |i| i.reverse } ]
end

#run(code) ⇒ Object

Runs a code fragment

Parameters:

  • code (String) —

    some valid ruby code

Returns:

  • the results of the eval



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# File 'lib/konfig/evaluator.rb', line 18

def run(code)
  eval(code, binding)
end