Class: TT::JSON

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
TT_Lib2/json.rb

Overview

Sortable Hash that preserves the insertion order. Prints out JSON strings of the content.

Based of Bill Kelly's InsertOrderPreservingHash

See Also:

Since:

  • 2.4.0

Instance Method Summary collapse

Constructor Details

#initialize(*args, &block) ⇒ JSON

Returns a new instance of JSON

Since:

  • 2.4.0



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# File 'TT_Lib2/json.rb', line 23

def initialize(*args, &block)
  if args.size == 1 && args[0].is_a?(Hash)
    @h = args[0].dup
    @ordered_keys = @h.keys
  else
    @h = Hash.new(*args, &block)
    @ordered_keys = []
  end
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(*args) ⇒ Object

Since:

  • 2.4.0



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# File 'TT_Lib2/json.rb', line 124

def method_missing(*args)
  @h.send(*args)
end

Instance Method Details

#[]=(key, val) ⇒ Object

Since:

  • 2.4.0



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# File 'TT_Lib2/json.rb', line 41

def []=(key, val)
  @ordered_keys << key unless @h.has_key? key
  @h[key] = val
end

#clear ⇒ Object

Since:

  • 2.4.0



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# File 'TT_Lib2/json.rb', line 81

def clear
  @ordered_keys.clear
  @h.clear
end

#delete(k, &block) ⇒ Object

Since:

  • 2.4.0



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# File 'TT_Lib2/json.rb', line 87

def delete(k, &block)
  @ordered_keys.delete k
  @h.delete(k, &block)
end

#delete_if(&block) ⇒ Object

Since:

  • 2.4.0



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# File 'TT_Lib2/json.rb', line 101

def delete_if(&block)
  reject!(&block)
  self
end

#each ⇒ Object Also known as: each_pair

Since:

  • 2.4.0



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# File 'TT_Lib2/json.rb', line 47

def each
  @ordered_keys.each {|k| yield(k, @h[k])}
end

#each_key ⇒ Object

Since:

  • 2.4.0



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# File 'TT_Lib2/json.rb', line 58

def each_key
  @ordered_keys.each {|k| yield k}
end

#each_value ⇒ Object

Since:

  • 2.4.0



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# File 'TT_Lib2/json.rb', line 53

def each_value
  @ordered_keys.each {|k| yield(@h[k])}
end

#initialize_copy(source) ⇒ Object

Since:

  • 2.4.0



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# File 'TT_Lib2/json.rb', line 34

def initialize_copy(source)  
  super  
  @h = @h.dup
  @ordered_keys = @ordered_keys.dup  
end

#key?(key) ⇒ Boolean Also known as: has_key?, include?, member?

Returns:

  • (Boolean)

Since:

  • 2.4.0



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# File 'TT_Lib2/json.rb', line 63

def key?(key)
  @h.key?(key)
end

#keys ⇒ Object

Since:

  • 2.4.0



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# File 'TT_Lib2/json.rb', line 71

def keys
  @ordered_keys
end

#merge!(hash) ⇒ Object

Since:

  • 2.4.0



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# File 'TT_Lib2/json.rb', line 107

def merge!(hash)
  hash.each { |key, value|
    if @h.key?(key)
      @h[key] = value
    else
      self[key] = value
    end
  }
end

#reject! ⇒ Object

Since:

  • 2.4.0



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# File 'TT_Lib2/json.rb', line 93

def reject!
  del = []
  each_pair {|k,v| del << k if yield k,v}
  del.each {|k| delete k}
  del.empty? ? nil : self
end

#to_hash ⇒ Hash

Returns:

  • (Hash)

Since:

  • 2.4.0



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# File 'TT_Lib2/json.rb', line 130

def to_hash
  @h.dup
end

#to_s(format = false) ⇒ Object Also known as: inspect

Compile JSON Hash into a string.

Since:

  • 2.4.0



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# File 'TT_Lib2/json.rb', line 137

def to_s(format=false)
  arr = self.map { |k,v|
    key = ( k.is_a?(Symbol) ) ? k.to_s.inspect : k.inspect
    value = TT::Javascript.to_js(v, format)
    "#{key}: #{value}"
  }
  str = (format) ? arr.join(",\n\t") : arr.join(", ")
  return (format) ? "{\n\t#{str}\n}\n" : "{#{str}}"
end

#values ⇒ Object

Since:

  • 2.4.0



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# File 'TT_Lib2/json.rb', line 76

def values
  @ordered_keys.map {|k| @h[k]}
end