Class: Traitee::ConflictSolver

Inherits:
Object
  • Object
show all
Defined in:
lib/traitee/conflict_solver.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(methods) ⇒ ConflictSolver

Returns a new instance of ConflictSolver.



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# File 'lib/traitee/conflict_solver.rb', line 8

def initialize(methods)
  @methods = methods
  @conflicting_methods = {}
end

Instance Attribute Details

#conflicting_methods ⇒ Object (readonly)

Returns the value of attribute conflicting_methods.



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# File 'lib/traitee/conflict_solver.rb', line 6

def conflicting_methods
  @conflicting_methods
end

Instance Method Details

#conflictless_method_map ⇒ Object 



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# File 'lib/traitee/conflict_solver.rb', line 18

def conflictless_method_map
  @methods.reduce({}) do |res, map|
    res.merge!(map) { |method_name, method_a, method_b| solve_possible_conflict(method_name, method_a, method_b) }
  end
end

#method_in_conflict(method_name, method_a, method_b) ⇒ Object 



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# File 'lib/traitee/conflict_solver.rb', line 29

def method_in_conflict(method_name, method_a, method_b)
  conflict_solver = self
  @conflicting_methods[method_name] = [method_a, method_b]

  # define a method which raises an error - uncallable
  this.send(:define_method, method_name) do
    _method_a, _method_b = conflict_solver.conflicting_methods[method_name]
    fail MethodsInConflict.new "Modules  are in conflict with method :#{method_name}"
  end

  this.instance_method(method_name)
end

#solve_possible_conflict(method_name, method_a, method_b) ⇒ Object

let it build, actual error will be raised later on all the usages of the method



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# File 'lib/traitee/conflict_solver.rb', line 25

def solve_possible_conflict(method_name, method_a, method_b)
  method_a == method_b ? method_a : method_in_conflict(method_name, method_a, method_b)
end

#this ⇒ Object

java reference :P, actual resolved module holder



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# File 'lib/traitee/conflict_solver.rb', line 14

def this
  @this ||= Module.new
end