Module: TypedOperation::Operations::Composition

Included in:
Base, ChainedOperation, ImmutableBase, PartiallyApplied, Pipeline::ChainableWrapper
Defined in:
lib/typed_operation/operations/composition.rb

Overview

Provides composition methods for chaining operations together. Included in operation classes and composed operations (ChainedOperation, Pipeline).

Instance Method Summary collapse

Instance Method Details

#or_else(fallback = nil, &block) ⇒ Object

Provides a fallback when the operation fails. : (?(singleton(Base) | Proc)) ?{ (untyped) -> untyped } -> FallbackChain



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# File 'lib/typed_operation/operations/composition.rb', line 36

def or_else(fallback = nil, &block)
  FallbackChain.new(self, fallback || block)
end

#then(operation = nil, **extra_kwargs, &block) ⇒ Object

Smart sequential composition with context accumulation. Auto-detects whether to spread kwargs or pass as single value. : (?(singleton(Base) | Proc), **untyped) ?{ (untyped) -> untyped } -> SmartChain



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# File 'lib/typed_operation/operations/composition.rb', line 12

def then(operation = nil, **extra_kwargs, &block)
  SmartChain.new(self, operation || block, extra_kwargs)
end

#then_passes(operation = nil, &block) ⇒ Object

Passes the context as a single positional argument to the next operation. : (?(singleton(Base) | Proc)) ?{ (untyped) -> untyped } -> SequenceChain



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# File 'lib/typed_operation/operations/composition.rb', line 24

def then_passes(operation = nil, &block)
  SequenceChain.new(self, operation || block)
end

#then_spreads(operation = nil, &block) ⇒ Object

Spreads the context as **kwargs to the next operation. : (?(singleton(Base) | Proc)) ?{ (untyped) -> untyped } -> SplatChain



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# File 'lib/typed_operation/operations/composition.rb', line 18

def then_spreads(operation = nil, &block)
  SplatChain.new(self, operation || block)
end

#transform(&block) ⇒ Object

Transforms the success value, replacing the context entirely. : () { (untyped) -> untyped } -> MapChain



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# File 'lib/typed_operation/operations/composition.rb', line 30

def transform(&block)
  MapChain.new(self, block)
end