Class: Philiprehberger::Try::Failure

Inherits:
Object
  • Object
show all
Defined in:
lib/philiprehberger/try.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(error) ⇒ Failure

Returns a new instance of Failure.



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# File 'lib/philiprehberger/try.rb', line 120

def initialize(error)
  @error = error
  freeze
end

Instance Attribute Details

#error ⇒ Object (readonly)

Returns the value of attribute error.



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# File 'lib/philiprehberger/try.rb', line 118

def error
  @error
end

Instance Method Details

#deconstruct_keys(_keys) ⇒ Object 



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# File 'lib/philiprehberger/try.rb', line 191

def deconstruct_keys(_keys)
  { success: false, error: @error }
end

#failure? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/philiprehberger/try.rb', line 137

def failure?
  true
end

#filter ⇒ Object 



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# File 'lib/philiprehberger/try.rb', line 178

def filter
  self
end

#flat_map ⇒ Object 



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# File 'lib/philiprehberger/try.rb', line 164

def flat_map
  self
end

#map ⇒ Object 



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# File 'lib/philiprehberger/try.rb', line 160

def map
  self
end

#map_error ⇒ Object 



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# File 'lib/philiprehberger/try.rb', line 172

def map_error
  new_error = yield @error
  new_error = RuntimeError.new(new_error.to_s) unless new_error.is_a?(Exception)
  Failure.new(new_error)
end

#on(exception_class, &block) ⇒ Object 



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# File 'lib/philiprehberger/try.rb', line 149

def on(exception_class, &block)
  return Try.call { block.call(@error) } if @error.is_a?(exception_class)

  self
end

#on_error {|@error| ... } ⇒ Object

Yields:



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# File 'lib/philiprehberger/try.rb', line 155

def on_error
  yield @error
  self
end

#or_else(default) ⇒ Object 



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# File 'lib/philiprehberger/try.rb', line 141

def or_else(default)
  Success.new(default)
end

#or_try ⇒ Object 



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# File 'lib/philiprehberger/try.rb', line 145

def or_try(&)
  Try.call(&)
end

#recover ⇒ Object 



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# File 'lib/philiprehberger/try.rb', line 168

def recover
  Try.call { yield @error }
end

#success? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/philiprehberger/try.rb', line 133

def success?
  false
end

#tap {|_self| ... } ⇒ Object

Yields:

  • (_self)

Yield Parameters:



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# File 'lib/philiprehberger/try.rb', line 182

def tap
  yield self
  self
end

#transform(on_success: nil, on_failure: nil) ⇒ Object 



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# File 'lib/philiprehberger/try.rb', line 187

def transform(on_success: nil, on_failure: nil)
  on_failure ? Try.call { on_failure.call(@error) } : self
end

#value ⇒ Object 



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# File 'lib/philiprehberger/try.rb', line 125

def value
  nil
end

#value! ⇒ Object

Raises:



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# File 'lib/philiprehberger/try.rb', line 129

def value!
  raise @error
end