Class: Dhall::Double

Inherits:
Expression show all
Defined in:
lib/dhall/ast.rb

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Expression

#&, #*, #+, #as_dhall, #cache_key, #call, #concat, decode, #deep_merge, #deep_merge_type, #dhall_eq, #digest, #fetch, #fusion, #merge, #normalize, #resolve, #shift, #slice, #substitute, #to_binary, #to_proc, #|

Class Method Details

.as_dhall ⇒ Object 



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# File 'lib/dhall/ast.rb', line 1164

def self.as_dhall
  Builtins[:Double]
end

Instance Method Details

#===(other) ⇒ Object 



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# File 'lib/dhall/ast.rb', line 1176

def ===(other)
  self == other || value === other
end

#as_json ⇒ Object 



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# File 'lib/dhall/ast.rb', line 1193

def as_json
  self
end

#coerce(other) ⇒ Object 



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# File 'lib/dhall/ast.rb', line 1180

def coerce(other)
  return [other, self] if other.is_a?(Double)
  [Double.new(value: other.to_f), self]
end

#eql?(other) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/dhall/ast.rb', line 1185

def eql?(other)
  other.is_a?(Double) && to_cbor == other.to_cbor
end

#single? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/dhall/ast.rb', line 1189

def single?
  [value].pack("g").unpack("g").first == value
end

#to_cbor(packer = nil) ⇒ Object 



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# File 'lib/dhall/ast.rb', line 1201

def to_cbor(packer=nil)
  if [0, Float::INFINITY, -Float::INFINITY].include?(value) || value.nan?
    return value.to_cbor(packer)
  end

  # Dhall spec requires *not* using half-precision CBOR floats
  bytes = single? ? [0xFA, value].pack("Cg") : [0xFB, value].pack("CG")
  if packer
    packer.buffer.write(bytes)
    packer
  else
    bytes
  end
end

#to_f ⇒ Object 



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# File 'lib/dhall/ast.rb', line 1172

def to_f
  value
end

#to_json ⇒ Object 



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# File 'lib/dhall/ast.rb', line 1197

def to_json
  value.to_json
end

#to_s ⇒ Object 



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# File 'lib/dhall/ast.rb', line 1168

def to_s
  value.to_s
end