Module: Rserve::WithNames

Included in:
Rlist
Defined in:
lib/rserve/withnames.rb

Overview

Provides names to elements on an Array

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#namesObject

Returns the value of attribute names


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# File 'lib/rserve/withnames.rb', line 4

def names
  @names
end

Instance Method Details

#[](v) ⇒ Object


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# File 'lib/rserve/withnames.rb', line 131

def [](v)
  case v
  when Integer
      at(v)
    when Array
      raise "You must use something like v[[1]]" if v.size!=1 or !v[0].is_a? Integer
      at(v[0]-1)
    when String
      if !@names.nil?
        i=@names.index(v)
        i.nil? ? nil : at(i)
      else
        nil
      end
  end
end

#[]=(i, v) ⇒ Object


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# File 'lib/rserve/withnames.rb', line 121

def []=(i,v)
  case i
    when Integer
      super(i,v)
    when String
      put(i,v)
    else
      raise "Should be Integer or String"
  end
end

#__add(a, b = nil) ⇒ Object


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# File 'lib/rserve/withnames.rb', line 111

def __add(a,b=nil)
  if b.nil?
    @data.push(a)
    @names=Array.new(@data.size-1) if @names.nil?
    @names.push(nil)
  else
    @data.insert(a,b)
    @names.insert(a,nil)
  end
end

#clearObject


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# File 'lib/rserve/withnames.rb', line 45

def clear
  @names=nil
  super()
end

#delete_at(i) ⇒ Object


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# File 'lib/rserve/withnames.rb', line 49

def delete_at(i)
  unless @names.nil?
    @names.delete_at(i)
  end
  super(i)
end

#has_name?(v) ⇒ Boolean

Returns:

  • (Boolean)

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# File 'lib/rserve/withnames.rb', line 82

def has_name?(v)
  named? and @names.include? v
end

#inspectObject


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# File 'lib/rserve/withnames.rb', line 42

def inspect
  "#<#{self.class}:#{self.object_id} #{to_s}>"
end

#key_at(v) ⇒ Object


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# File 'lib/rserve/withnames.rb', line 91

def key_at(v)
  @names.nil? ?  nil : @names[v]
end

#named?Boolean

Returns:

  • (Boolean)

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# File 'lib/rserve/withnames.rb', line 85

def named?
  !@names.nil?
end

#popObject


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# File 'lib/rserve/withnames.rb', line 55

def pop
  unless @names.nil?
    @names.pop
  end
  super
end

#pretty_print(q) ⇒ Object


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# File 'lib/rserve/withnames.rb', line 16

def pretty_print(q)
  q.group(1,'[|WN|',']') {
    q.seplist(self,nil,:each_with_index) {|v,i|
      if (@names.nil? or @names[i].nil?) 
       q.pp v
      else
        q.group {
        q.pp @names[i]
        q.text '='
        q.group(1) { q.pp v } 
        }
      end
    }
  }
end

#push(v, name = nil) ⇒ Object


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# File 'lib/rserve/withnames.rb', line 10

def push(v,name=nil)
  @names||=Array.new(self.size)
  (@names.size-self.size).times { @names.push(nil)}
  @names.push(name)
  super(v)
end

#put(key, value) ⇒ Object

Put a value on specific key If key exists, replaces element of apropiate index If key doesn't exists, works as push(value,key)


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# File 'lib/rserve/withnames.rb', line 97

def put(key,value)
  if key.nil?
    add(value)
    return nil
  end
  
  if !@names.nil?
    pos=@names.index(key)
    if !pos.nil?
      return self[pos]=value
    end
  end      
  push(value,key)      
end

#reverse!Object


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# File 'lib/rserve/withnames.rb', line 62

def reverse!
  unless @names.nil?
    @names.reverse!
  end
  super
end

#shiftObject


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# File 'lib/rserve/withnames.rb', line 68

def shift
  unless @names.nil?
    @names.shift
  end
  super  
end

#slice(*args) ⇒ Object


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# File 'lib/rserve/withnames.rb', line 74

def slice(*args)
  sliced=super(*args)
  unless @names.nil?
    sliced.extend Rserve::WithNames
    sliced.names=@names.slice(*args)
  end
  sliced
end

#to_aObject


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# File 'lib/rserve/withnames.rb', line 88

def to_a
  Array.new(self)
end

#to_sObject


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# File 'lib/rserve/withnames.rb', line 31

def to_s
  out=[]
  self.each_with_index { |v,i| 
    if !@names.nil? and !@names[i].nil?
      out.push("#{@names[i]}=#{v}")
    else
      out.push("#{v}")
    end
  }
  "[#{out.join(", ")}]"
end