module Contracts::Support

# File lib/contracts/support.rb, line 32
def contract_id(contract)
  contract.object_id
end

# File lib/contracts/support.rb, line 45
def eigenclass?(target)
  module_eigenclass?(target) ||
    target <= eigenclass_of(Object)
end

# File lib/contracts/support.rb, line 36
def eigenclass_hierarchy_supported?
  return false if RUBY_PLATFORM == "java" && RUBY_VERSION.to_f < 2.0
  RUBY_VERSION.to_f > 1.8
end

# File lib/contracts/support.rb, line 41
def eigenclass_of(target)
  class << target; self; end
end

# File lib/contracts/support.rb, line 19
def method_name(method)
  method.is_a?(Proc) ? "Proc" : method.name
end

# File lib/contracts/support.rb, line 4
def 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

# File lib/contracts/support.rb, line 27
def 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

# File lib/contracts/support.rb, line 54
def module_eigenclass?(target)
  target < Module
end