Class: SafeYAML::Transform::ToFloat

Inherits:
Object
  • Object
show all
Defined in:
lib/safe_yaml/transform/to_float.rb

Constant Summary collapse

Infinity = 
1.0 / 0.0
NaN = 
0.0 / 0.0
PREDEFINED_VALUES = 
{
  ".inf"  => Infinity,
  ".Inf"  => Infinity,
  ".INF"  => Infinity,
  "-.inf" => -Infinity,
  "-.Inf" => -Infinity,
  "-.INF" => -Infinity,
  ".nan"  => NaN,
  ".NaN"  => NaN,
  ".NAN"  => NaN,
}.freeze
MATCHER = 
/\A[-+]?(?:\d[\d_]*)?\.[\d_]+(?:[eE][-+][\d]+)?\Z/.freeze

Instance Method Summary collapse

Instance Method Details

#transform?(value) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/safe_yaml/transform/to_float.rb', line 21

def transform?(value)
  return true, Float(value) if MATCHER.match(value)
  try_edge_cases?(value)
end

#try_edge_cases?(value) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/safe_yaml/transform/to_float.rb', line 26

def try_edge_cases?(value)
  return true, PREDEFINED_VALUES[value] if PREDEFINED_VALUES.include?(value)
  return true, Parse::Sexagesimal.value(value) if Parse::Sexagesimal::FLOAT_MATCHER.match(value)
  return false
end