Class: RIO::Cx::Vars

Inherits:
Object show all
Extended by:
Forwardable
Defined in:
lib/rio/context.rb

Constant Summary collapse

BEQUEATH_KEYS = 
%w[chomp strip rename closeoneof closeoncopy]

Instance Method Summary collapse

Constructor Details

#initialize(h = Hash.new, exp = Hash.new) ⇒ Vars

Returns a new instance of Vars.



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# File 'lib/rio/context.rb', line 40

def initialize(h=Hash.new,exp=Hash.new)
  @values = h
  @explicit = exp
end

Instance Method Details

#[]=(key, val) ⇒ Object 



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# File 'lib/rio/context.rb', line 82

def []=(key,val)
  @values[key] = val
  @explicit[key] = true
end

#bequeath(oldcx) ⇒ Object

BEQUEATH_KEYS = %w[chomp strip rename]



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# File 'lib/rio/context.rb', line 51

def bequeath(oldcx)
  keys = BEQUEATH_KEYS
  ncx = oldcx.clone
  #ncx = Vars.new
  keys.each { |key|
    ncx.set_(key,@values[key]) if @values.has_key?(key)
  }
  ncx
end

#delete(key) ⇒ Object 



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# File 'lib/rio/context.rb', line 60

def delete(key)
  @values.delete(key)
  @explicit.delete(key)
end

#get_keystate(key) ⇒ Object 



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# File 'lib/rio/context.rb', line 64

def get_keystate(key)
  key_exists = @values.key?(key)
  key_val = @values[key]
  key_explicit = @explicit[key]
  [key,key_exists,key_val,key_explicit]
end

#initialize_copy(*args) ⇒ Object 



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# File 'lib/rio/context.rb', line 44

def initialize_copy(*args)
  super
  @values = @values.clone
  @explicit = @explicit.clone
end

#inspect ⇒ Object 



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# File 'lib/rio/context.rb', line 86

def inspect()
  str = sprintf('#<Cx:0x%08x ',self.object_id)
  vary = {}
  @values.each { |k,v|
    name = k
    name += '_' unless @explicit[k]
    if v == true
      vary[name] = nil
    elsif v == false
      vary[name] = 'false'
    else 
      vary[name] = v
    end
  }
  strs = []
  vary.each { |k,v|
   if v.nil?
     strs << k
   else
     strs << "#{k}(#{v.inspect})"
   end
  }
  str += strs.join(',')
  str +='>'
  str
end

#set_(key, val) ⇒ Object 



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# File 'lib/rio/context.rb', line 79

def set_(key,val)
  @values[key] = val unless @explicit[key]
end

#set_keystate(key, key_exists, key_val, key_explicit) ⇒ Object 



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# File 'lib/rio/context.rb', line 70

def set_keystate(key,key_exists,key_val,key_explicit)
  if(key_exists) then
    @values[key] = key_val
    @explicit[key] = key_explicit
  else
    @values.delete(key)
    @explicit.delete(key)
  end
end