Class: Hollerith::ValueGetter

Inherits:
Object
  • Object
show all
Defined in:
lib/hollerith/utilities/value_getter.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(user_context, main_context, user_defined_functions, user_context_change, local_context = {}) ⇒ ValueGetter

Returns a new instance of ValueGetter.



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# File 'lib/hollerith/utilities/value_getter.rb', line 7

def initialize user_context, main_context, user_defined_functions, user_context_change, local_context = {} 
  # local_context is only used for the getting of this value
  # and does not get bubbled up to other function calls,
  # helpful for each loops in functions.
  @main_context = main_context  
  @user_context = user_context.merge(local_context)
  @user_defined_functions = user_defined_functions  
  @user_context_change = user_context_change  
end

Instance Attribute Details

#user_context_change ⇒ Object (readonly)

Returns the value of attribute user_context_change.



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# File 'lib/hollerith/utilities/value_getter.rb', line 5

def user_context_change
  @user_context_change
end

Instance Method Details

#get(value_to_get) ⇒ Object 



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# File 'lib/hollerith/utilities/value_getter.rb', line 17

def get value_to_get
  if !value_to_get.is_a?(String)
    return value_to_get
  elsif value_to_get.downcase == 'true'
    return true
  elsif value_to_get.downcase == 'false'
    return false
  elsif value_to_get.to_i.to_s == value_to_get 
    value_to_get.to_i
  elsif value_to_get.start_with?('$$_')
    hash_key = value_to_get[3..-1].strip
    read_hash_value(hash_key)
  elsif value_to_get.start_with?('%%_')
    runner = Hollerith::FunctionRunner.new(
      value_to_get,
      @main_context,
      @user_context.merge(@user_context_change || {}),
      @user_defined_functions
    )

    result = runner.evaluate

    @user_context_change.deep_merge!(runner.user_context_change || {}) 

    get(result)
  elsif value_is_in_quotes?(value_to_get)
    value_to_get[1..-2]
  else
    value_to_get
  end
end