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Fix ruby %alias directive for native c functions

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Using the %alias directive on native C functions causes swig to segfault due to
a dereference of klass (which is NULL for native C functions) in the
defineAliases function of the Ruby module. This commit adds support for an alias
of native C functions for both separate module as well as global functions, as
well as three test cases for the %alias directive of the Ruby module.

Fixes:
mod.i
%module ruby_alias
%alias get_my_name "nickname,fullname";
%inline %{
const char *get_my_name(){
  return "Chester Tester";
}
%}
$ swig -ruby mod.i
Segmentation fault

Signed-off-by: Joel Anderson <joelanderson333@gmail.com>
This commit is contained in:
Joel Anderson 2018-03-21 19:12:54 -04:00
commit a1cea4f483
8 changed files with 129 additions and 1 deletions
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26
Examples/test-suite/ruby/ruby_alias_module_function_runme.rb Normal file
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@ -0,0 +1,26 @@
#!/usr/bin/env ruby
#
# Runtime tests for ruby_alias_module_function.i
#
require 'swig_assert'
require 'ruby_alias_module_function'
include Ruby_alias_module_function
expected_name = Ruby_alias_module_function.get_my_name
swig_assert(Ruby_alias_module_function.nickname == expected_name, msg: "nickname returned a different result than get_my_name")
swig_assert(Ruby_alias_module_function.fullname == expected_name, msg: "fullname returned a different result than get_my_name")
nickname_method = Ruby_alias_module_function.method(:nickname)
fullname_method = Ruby_alias_module_function.method(:fullname)
if nickname_method.respond_to?(:original_name)
swig_assert_equal_simple(nickname_method.original_name, :get_my_name)
swig_assert_equal_simple(fullname_method.original_name, :get_my_name)
else
original_method = Ruby_alias_module_function.method(:get_my_name)
swig_assert(nickname_method == original_method, msg: "nickname is not an alias of get_my_name")
swig_assert(fullname_method == original_method, msg: "fullname is not an alias of get_my_name")
end