Merge branch 'tamuratak-fix_ruby_wstring'

* tamuratak-fix_ruby_wstring:
  [ruby] use %fragment to clarify the dependency of code.
  [ruby] should initialize static variables inside %init{}, in which it will not be        excuted concurrently by multiple threads.
  [ruby] * use static variable to avoid creating stirngs every time.        * fix possible overflow.
  [ruby] add std::wstring tests for string including a null terminator.
  [ruby] * rewrite SWIG_AsWCharPtrAndSize and SWIG_FromWCharPtrAndSize        * use UTF-32LE and UTF-16LE to avoid BOM        * add tests
  [ruby] use WCHAR_MAX to determine the encoding of std::wstring.
  [ruby] add a few tests for std::wstring
  [ruby] fix support for std::wstring.

Examples/test-suite/li_std_wstring.i

@@ -78,6 +78,10 @@ std::wstring& test_reference_out() {
    return x;
 }
 
+bool test_equal_abc(const std::wstring &s) {
+  return L"abc" == s;
+}
+
 #if defined(_MSC_VER)
   #pragma warning(disable: 4290) // C++ exception specification ignored except to indicate a function is not __declspec(nothrow)
 #endif

Examples/test-suite/ruby/Makefile.in

@@ -21,6 +21,7 @@ CPP_TEST_CASES = \
 	li_std_queue \
 	li_std_set \
 	li_std_stack \
+	li_std_wstring \
 	primitive_types \
 	ruby_keywords \
 	ruby_minherit_shared_ptr \

Examples/test-suite/ruby/li_std_wstring_runme.rb

@@ -0,0 +1,42 @@
+# -*- coding: utf-8 -*-
+require 'swig_assert'
+require 'li_std_wstring'
+
+x = "abc"
+swig_assert_equal("Li_std_wstring.test_wchar_overload(x)", "x", binding)
+swig_assert_equal("Li_std_wstring.test_ccvalue(x)", "x", binding)
+swig_assert_equal("Li_std_wstring.test_value(Li_std_wstring::Wstring.new(x))", "x", binding)
+
+swig_assert_equal("Li_std_wstring.test_wchar_overload()", "nil", binding)
+
+swig_assert_equal("Li_std_wstring.test_pointer(Li_std_wstring::Wstring.new(x))", "nil", binding)
+swig_assert_equal("Li_std_wstring.test_const_pointer(Li_std_wstring::Wstring.new(x))", "nil", binding)
+swig_assert_equal("Li_std_wstring.test_const_pointer(Li_std_wstring::Wstring.new(x))", "nil", binding)
+swig_assert_equal("Li_std_wstring.test_reference(Li_std_wstring::Wstring.new(x))", "nil", binding)
+
+x = "y"
+swig_assert_equal("Li_std_wstring.test_value(x)", "x", binding)
+a = Li_std_wstring::A.new(x)
+swig_assert_equal("Li_std_wstring.test_value(a)", "x", binding)
+
+x = "hello"
+swig_assert_equal("Li_std_wstring.test_const_reference(x)", "x", binding)
+
+
+swig_assert_equal("Li_std_wstring.test_pointer_out", "'x'", binding)
+swig_assert_equal("Li_std_wstring.test_const_pointer_out", "'x'", binding)
+swig_assert_equal("Li_std_wstring.test_reference_out()", "'x'", binding)
+
+s = "abc"
+swig_assert("Li_std_wstring.test_equal_abc(s)", binding)
+
+begin
+  Li_std_wstring.test_throw
+rescue RuntimeError => e
+  swig_assert_equal("e.message", "'x'", binding)
+end
+
+x = "abc\0def"
+swig_assert_equal("Li_std_wstring.test_value(x)", "x", binding)
+swig_assert_equal("Li_std_wstring.test_ccvalue(x)", '"abc"', binding)
+swig_assert_equal("Li_std_wstring.test_wchar_overload(x)", '"abc"', binding)