Class: Packr::Map

Inherits:
Object
  • Object
show all
Defined in:
lib/packr/map.rb

Overview

This is effectively a wrapper for Hash instances - we’re including it to maintain similarity with the JavaScript version for easier maintainance.

Direct Known Subclasses

Collection

Instance Method Summary collapse

Constructor Details

#initialize(values = nil) ⇒ Map

Returns a new instance of Map.



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# File 'lib/packr/map.rb', line 6

def initialize(values = nil)
  @values = {}
  merge(values) unless values.nil?
end

Instance Method Details

#clear ⇒ Object 



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# File 'lib/packr/map.rb', line 11

def clear
  @values.clear
end

#copy ⇒ Object 



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# File 'lib/packr/map.rb', line 15

def copy
  self.class.new(@values)
end

#each ⇒ Object 



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# File 'lib/packr/map.rb', line 19

def each
  @values.each { |key, value| yield(value, key) }
end

#get(key) ⇒ Object 



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# File 'lib/packr/map.rb', line 23

def get(key)
  @values[key.to_s]
end

#get_keys ⇒ Object 



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# File 'lib/packr/map.rb', line 27

def get_keys
  @values.keys
end

#get_values ⇒ Object 



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# File 'lib/packr/map.rb', line 31

def get_values
  @values.values
end

#has?(key) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/packr/map.rb', line 35

def has?(key)
  @values.has_key?(key.to_s)
end

#merge(*args) ⇒ Object 



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# File 'lib/packr/map.rb', line 39

def merge(*args)
  args.each do |values|
    values = values.get_values if values.is_a?(Map)
    values.each { |key, value| put(key, value) }
  end
  self
end

#put(key, value = nil) ⇒ Object 



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# File 'lib/packr/map.rb', line 51

def put(key, value = nil)
  value ||= key
  # Create the new entry (or overwrite the old entry).
  @values[key.to_s] = value
end

#remove(key) ⇒ Object 



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# File 'lib/packr/map.rb', line 47

def remove(key)
  @values.delete(key.to_s)
end

#size ⇒ Object 



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# File 'lib/packr/map.rb', line 57

def size
  @values.length
end

#union(*values) ⇒ Object 



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# File 'lib/packr/map.rb', line 61

def union(*values)
  copy.merge(*values)
end