Method: Fiddle::Importer#extern

Defined in:
lib/fiddle/import.rb

#extern(signature, *opts) ⇒ Object

Creates a global method from the given C signature.



169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
 
# File 'lib/fiddle/import.rb', line 169

def extern(signature, *opts)
  symname, ctype, argtype = parse_signature(signature, type_alias)
  opt = parse_bind_options(opts)
  f = import_function(symname, ctype, argtype, opt[:call_type])
  name = symname.gsub(/@.+/,'')
  @func_map[name] = f
  # define_method(name){|*args,&block| f.call(*args,&block)}
  begin
    /^(.+?):(\d+)/ =~ caller.first
    file, line = $1, $2.to_i
  rescue
    file, line = __FILE__, __LINE__+3
  end
  module_eval("    def \#{name}(*args, &block)\n      @func_map['\#{name}'].call(*args,&block)\n    end\n  EOS\n  module_function(name)\n  f\nend\n", file, line)