Module: Contracts::Support

Defined in:
lib/contracts/support.rb

Class Method Summary collapse

Class Method Details

.eigenclass?(target) ⇒ Boolean

Returns:

  • (Boolean)

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# File 'lib/contracts/support.rb', line 40

def self.eigenclass?(target)
  target <= eigenclass_of(Object)
end

.eigenclass_hierarchy_supported?Boolean

Returns:

  • (Boolean)

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# File 'lib/contracts/support.rb', line 31

def self.eigenclass_hierarchy_supported?
  return false if RUBY_PLATFORM == "java" && RUBY_VERSION.to_f < 2.0
  RUBY_VERSION.to_f > 1.8
end

.eigenclass_of(target) ⇒ Object


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# File 'lib/contracts/support.rb', line 36

def self.eigenclass_of(target)
  class << target; self; end
end

.method_name(method) ⇒ Object


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# File 'lib/contracts/support.rb', line 18

def self.method_name(method)
  method.is_a?(Proc) ? "Proc" : method.name
end

.method_position(method) ⇒ Object


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# File 'lib/contracts/support.rb', line 3

def self.method_position(method)
  return method.method_position if method.is_a?(MethodReference)

  if RUBY_VERSION =~ /^1\.8/
    if method.respond_to?(:__file__)
      method.__file__ + ":" + method.__line__.to_s
    else
      method.inspect
    end
  else
    file, line = method.source_location
    file + ":" + line.to_s
  end
end

.unique_idObject

Generates unique id, which can be used as a part of identifier

Example:

Contracts::Support.unique_id   # => "i53u6tiw5hbo"

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# File 'lib/contracts/support.rb', line 26

def self.unique_id
  # Consider using SecureRandom.hex here, and benchmark which one is better
  (Time.now.to_f * 1000).to_i.to_s(36) + rand(1_000_000).to_s(36)
end