Class: Stupidedi::Either::Failure

Inherits:

Stupidedi::Either

• Object
• Stupidedi::Either
• Stupidedi::Either::Failure

show all

Defined in:

lib/stupidedi/either.rb

Instance Attribute Summary (collapse)

• - reason readonly

  Returns the value of attribute reason.

Filtering the Value (collapse)

• - (Failure) reject(reason = nil)
• - (Failure) select(reason = nil)

Transforming the Value (collapse)

• - (Failure) explain {|reason| ... }
• - (Failure) flatmap
• - (Failure) map
• - (Either) or {|reason| ... }

Instance Method Summary (collapse)

• - (Boolean) ==(other)
• - (Failure) copy(changes = {})
• - (Boolean) defined?

  False.

• - fetch(default)
• - (Failure) initialize(reason) constructor

  A new instance of Failure.

• - (String) inspect
• - pretty_print(q)
• - tap

Methods inherited from Stupidedi::Either

failure, success

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# File 'lib/stupidedi/either.rb', line 162

def initialize(reason)
  @reason = reason
end

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# File 'lib/stupidedi/either.rb', line 160

def reason
  @reason
end

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# File 'lib/stupidedi/either.rb', line 238

def ==(other)
  other.is_a?(self.class) and other.reason == @reason
end

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# File 'lib/stupidedi/either.rb', line 167

def copy(changes = {})
  Failure.new \
    changes.fetch(:reason, @reason)
end

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# File 'lib/stupidedi/either.rb', line 173

def defined?
  false
end

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# File 'lib/stupidedi/either.rb', line 226

def explain(&block)
  copy(:reason => deconstruct(block))
end

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# File 'lib/stupidedi/either.rb', line 177

def fetch(default)
  default
end

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# File 'lib/stupidedi/either.rb', line 206

def flatmap
  self
end

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# File 'lib/stupidedi/either.rb', line 252

def inspect
  "Either.failure(#{@reason.inspect})"
end

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# File 'lib/stupidedi/either.rb', line 201

def map
  self
end

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# File 'lib/stupidedi/either.rb', line 213

def or(&block)
  result = deconstruct(block)

  if result.is_a?(Either)
    result
  else
    raise TypeError, "block did not return an instance of Either"
  end
end

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# File 'lib/stupidedi/either.rb', line 243

def pretty_print(q)
  q.text("Either.failure")
  q.group(2, "(", ")") do
    q.breakable ""
    q.pp @reason
  end
end

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# File 'lib/stupidedi/either.rb', line 190

def reject(reason = nil)
  self
end

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# File 'lib/stupidedi/either.rb', line 185

def select(reason = nil)
  self
end

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# File 'lib/stupidedi/either.rb', line 233

def tap
  self
end