Class: Psych::Coder

Inherits:
Object show all
Defined in:
lib/psych/coder.rb

Overview

If an object defines encode_with, then an instance of Psych::Coder will be passed to the method when the object is being serialized. The Coder automatically assumes a Psych::Nodes::Mapping is being emitted. Other objects like Sequence and Scalar may be emitted if seq= or scalar= are called, respectively.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(tag) ⇒ Coder

Returns a new instance of Coder.


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# File 'lib/psych/coder.rb', line 13

def initialize tag
  @map      = {}
  @seq      = []
  @implicit = false
  @type     = :map
  @tag      = tag
  @style    = Psych::Nodes::Mapping::BLOCK
  @scalar   = nil
  @object   = nil
end

Instance Attribute Details

#implicitObject

Returns the value of attribute implicit


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# File 'lib/psych/coder.rb', line 10

def implicit
  @implicit
end

#objectObject

Returns the value of attribute object


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# File 'lib/psych/coder.rb', line 10

def object
  @object
end

#seqObject

Returns the value of attribute seq


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# File 'lib/psych/coder.rb', line 11

def seq
  @seq
end

#styleObject

Returns the value of attribute style


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# File 'lib/psych/coder.rb', line 10

def style
  @style
end

#tagObject

Returns the value of attribute tag


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# File 'lib/psych/coder.rb', line 10

def tag
  @tag
end

#typeObject (readonly)

Returns the value of attribute type


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# File 'lib/psych/coder.rb', line 11

def type
  @type
end

Instance Method Details

#[](k) ⇒ Object


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# File 'lib/psych/coder.rb', line 84

def [] k
  @type = :map
  @map[k]
end

#[]=(k, v) ⇒ Object Also known as: add


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# File 'lib/psych/coder.rb', line 78

def []= k, v
  @type = :map
  @map[k] = v
end

#map(tag = @tag, style = @style) {|_self| ... } ⇒ Object

Emit a map. The coder will be yielded to the block.

Yields:

  • (_self)

Yield Parameters:

  • _self (Psych::Coder)

    the object that the method was called on


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# File 'lib/psych/coder.rb', line 34

def map tag = @tag, style = @style
  @tag   = tag
  @style = style
  yield self if block_given?
  @map
end

#map=(map) ⇒ Object

Emit a map with value


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# File 'lib/psych/coder.rb', line 73

def map= map
  @type = :map
  @map  = map
end

#represent_map(tag, map) ⇒ Object

Emit a sequence with map and tag


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# File 'lib/psych/coder.rb', line 54

def represent_map tag, map
  @tag = tag
  self.map = map
end

#represent_object(tag, obj) ⇒ Object

Emit an arbitrary object obj and tag


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# File 'lib/psych/coder.rb', line 60

def represent_object tag, obj
  @tag    = tag
  @type   = :object
  @object = obj
end

#represent_scalar(tag, value) ⇒ Object

Emit a scalar with value and tag


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# File 'lib/psych/coder.rb', line 42

def represent_scalar tag, value
  self.tag    = tag
  self.scalar = value
end

#represent_seq(tag, list) ⇒ Object

Emit a sequence with list and tag


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# File 'lib/psych/coder.rb', line 48

def represent_seq tag, list
  @tag = tag
  self.seq = list
end

#scalar(*args) ⇒ Object


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# File 'lib/psych/coder.rb', line 24

def scalar *args
  if args.length > 0
    warn "#{caller[0]}: Coder#scalar(a,b,c) is deprecated" if $VERBOSE
    @tag, @scalar, _ = args
    @type = :scalar
  end
  @scalar
end

#scalar=(value) ⇒ Object

Emit a scalar with value


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# File 'lib/psych/coder.rb', line 67

def scalar= value
  @type   = :scalar
  @scalar = value
end