Class: Laminar::Flow::Branch

Inherits:
Object
  • Object
show all
Includes:
OptionsValidator
Defined in:
lib/laminar/flow/branch.rb

Overview

Specification for a target rule transition.

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from OptionsValidator

included

Constructor Details

#initialize(name, options = {}) ⇒ Branch

Returns a new instance of Branch.

Raises:

  • (ArgumentError) 


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# File 'lib/laminar/flow/branch.rb', line 20

def initialize(name, options = {})
  raise ArgumentError, 'invalid name' unless name.class.method_defined?(:to_sym)

  validate_options(options)
  @name = name.to_sym
  define_condition(options)
end

Instance Attribute Details

#condition ⇒ Object

Returns the branch condition (method name symbol or Proc/lambda).

Returns:

  • the branch condition (method name symbol or Proc/lambda)



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# File 'lib/laminar/flow/branch.rb', line 18

attr_accessor :name, :condition, :condition_type

#condition_type ⇒ Object

Returns the value of attribute condition_type.



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# File 'lib/laminar/flow/branch.rb', line 18

def condition_type
  @condition_type
end

#name ⇒ Object

Returns target rule to branch to.

Returns:

  • target rule to branch to



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# File 'lib/laminar/flow/branch.rb', line 18

def name
  @name
end

Instance Method Details

#meets_condition?(target) ⇒ Boolean

Returns true if condition is satisfied in the context.

Parameters:

  • context (RuleBase) —

    a given rule implementation

Returns:

  • (Boolean) —

    true if condition is satisfied in the context.



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# File 'lib/laminar/flow/branch.rb', line 31

def meets_condition?(target)
  return true if condition.nil?

  result = run_condition(target)
  condition_type == :if ? result : !result
end