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# frozen_string_literal: true

require 'fiddle.so'
require 'fiddle/closure'
require 'fiddle/function'
require 'fiddle/version'

module Fiddle
  if WINDOWS
    # Returns the last win32 +Error+ of the current executing +Thread+ or nil
    # if none
    def self.win32_last_error
      Thread.current[:__FIDDLE_WIN32_LAST_ERROR__]
    end

    # Sets the last win32 +Error+ of the current executing +Thread+ to +error+
    def self.win32_last_error= error
      Thread.current[:__FIDDLE_WIN32_LAST_ERROR__] = error
    end

    # Returns the last win32 socket +Error+ of the current executing
    # +Thread+ or nil if none
    def self.win32_last_socket_error
      Thread.current[:__FIDDLE_WIN32_LAST_SOCKET_ERROR__]
    end

    # Sets the last win32 socket +Error+ of the current executing
    # +Thread+ to +error+
    def self.win32_last_socket_error= error
      Thread.current[:__FIDDLE_WIN32_LAST_SOCKET_ERROR__] = error
    end
  end

  # Returns the last +Error+ of the current executing +Thread+ or nil if none
  def self.last_error
    Thread.current[:__FIDDLE_LAST_ERROR__]
  end

  # Sets the last +Error+ of the current executing +Thread+ to +error+
  def self.last_error= error
    Thread.current[:__DL2_LAST_ERROR__] = error
    Thread.current[:__FIDDLE_LAST_ERROR__] = error
  end

  # call-seq: dlopen(library) => Fiddle::Handle
  #
  # Creates a new handler that opens +library+, and returns an instance of
  # Fiddle::Handle.
  #
  # If +nil+ is given for the +library+, Fiddle::Handle::DEFAULT is used, which
  # is the equivalent to RTLD_DEFAULT. See <code>man 3 dlopen</code> for more.
  #
  #   lib = Fiddle.dlopen(nil)
  #
  # The default is dependent on OS, and provide a handle for all libraries
  # already loaded. For example, in most cases you can use this to access
  # +libc+ functions, or ruby functions like +rb_str_new+.
  #
  # See Fiddle::Handle.new for more.
  def dlopen library
    Fiddle::Handle.new library
  end
  module_function :dlopen

  # Add constants for backwards compat

  RTLD_GLOBAL = Handle::RTLD_GLOBAL # :nodoc:
  RTLD_LAZY   = Handle::RTLD_LAZY   # :nodoc:
  RTLD_NOW    = Handle::RTLD_NOW    # :nodoc:
end