class Trailblazer::Option
Constants
- VERSION
Public Class Methods
build(value)
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Generic builder for a callable “option”. @param call_implementation [Class, Module] implements the process of calling the proc
while passing arguments/options to it in a specific style (e.g. kw args, step interface).
@return [Proc] when called, this proc will evaluate its option (at run-time).
# File lib/trailblazer/option.rb, line 43 def self.build(value) evaluate = case value when Symbol then method(:evaluate_method) when Proc then method(:evaluate_proc) else method(:evaluate_callable) end ->(*args, **options, &block) { evaluate.(value, *args, **options, &block) } end
call!(value, *args, signal: :call, keyword_arguments: {}, **, &block)
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# File lib/trailblazer/option.rb, line 7 def self.call!(value, *args, signal: :call, keyword_arguments: {}, **, &block) # NOTE: {**keyword_arguments} gets removed automatically if it's an empty hash. value.public_send(signal, *args, **keyword_arguments, &block) end
evaluate_callable(value, *args, **options, &block)
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Note that evaluate_callable, evaluate_proc and evaluate_method drop most of the args. If you need those, override this class.
@private
# File lib/trailblazer/option.rb, line 23 def self.evaluate_callable(value, *args, **options, &block) call!(value, *args, **options, &block) end
evaluate_method(value, *args, exec_context: raise("No :exec_context given."), **options, &block)
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Make the exec_context’s instance method a “lambda” and reuse call!. @private
# File lib/trailblazer/option.rb, line 35 def self.evaluate_method(value, *args, exec_context: raise("No :exec_context given."), **options, &block) call!(exec_context.method(value), *args, **options, &block) end
evaluate_proc(value, *args, signal: :instance_exec, exec_context: raise("No :exec_context given."), **options)
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Pass given ‘value` as a block and evaluate it within `exec_context` binding. @private
# File lib/trailblazer/option.rb, line 29 def self.evaluate_proc(value, *args, signal: :instance_exec, exec_context: raise("No :exec_context given."), **options) call!(exec_context, *args, signal: signal, **options, &value) end