Module: SY::ExpressibleInUnits::DetectRedefine

Defined in:
lib/sy/expressible_in_units.rb

Overview

This is a mixin for the target class of this mixin, that causes it to warn upon detecting newly defined methods shadowing the SY unit methods.

Instance Method Summary collapse

Instance Method Details

#method_added(ß) ⇒ Object 



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# File 'lib/sy/expressible_in_units.rb', line 14

def method_added ß
  # warn "#{self}: method added: :#{ß}"
  uu = ::SY::ExpressibleInUnits.known_units
  nn = uu.map &:name
  aa = uu.map &:abbreviation
  ꜧ = Hash[ nn.zip( uu ) ].merge Hash[ aa.zip( uu ) ]
  w = ::SY::ExpressibleInUnits::REDEFINE_WARNING % [ ß, self ]
  if nn.include? ß then
    if instance_methods.include? ß then
      im = instance_method ß
      warn w unless ::SY::ExpressibleInUnits.method_family.include? im if
        ꜧ[ß].warns? unless instance_variable_get( :@no_collision ) == ß
      instance_variable_set( :@no_collision, nil )
    else
      warn w if ꜧ[ß].warns?
    end
  end
  if aa.include? ß then
    if instance_methods.include? ß then
      im = instance_method ß
      warn w unless ::SY::ExpressibleInUnits.method_family.include? im if
        ꜧ[ß].warns? unless instance_variable_get( :@no_collision ) == ß
      instance_variable_set( :@no_collision, nil )
    else
      warn w if ꜧ[ß].warns?
    end
  end
end