1 files changed, 783 insertions, 0 deletions
diff --git a/ruby/src/IceRuby/Util.cpp b/ruby/src/IceRuby/Util.cpp
new file mode 100644
index 00000000000..bac8daddec1
--- /dev/null
+++ b/ruby/src/IceRuby/Util.cpp
@@ -0,0 +1,783 @@
+// **********************************************************************
+//
+// Copyright (c) 2003-2015 ZeroC, Inc. All rights reserved.
+//
+// This copy of Ice is licensed to you under the terms described in the
+// ICE_LICENSE file included in this distribution.
+//
+// **********************************************************************
+
+#include <Util.h>
+#include <Ice/LocalException.h>
+#include <Ice/Protocol.h>
+#include <stdarg.h>
+
+#ifdef HAVE_RUBY_ENCODING_H
+#  include <ruby/encoding.h>
+#endif
+
+using namespace std;
+using namespace IceRuby;
+
+namespace
+{
+
+#ifndef NDEBUG
+bool
+checkIsInstance(VALUE p, const char* type)
+{
+    volatile VALUE rbType = callRuby(rb_path2class, type);
+    assert(!NIL_P(rbType));
+    return callRuby(rb_obj_is_instance_of, p, rbType) == Qtrue;
+}
+#endif
+
+template<typename T>
+bool
+setVersion(VALUE p, const T& version, const char* type)
+{
+    assert(checkIsInstance(p, type));
+
+    volatile VALUE major = callRuby(rb_int2inum, version.major);
+    volatile VALUE minor = callRuby(rb_int2inum, version.minor);
+    rb_ivar_set(p, rb_intern("@major"), major);
+    rb_ivar_set(p, rb_intern("@minor"), minor);
+
+    return true;
+}
+
+template<typename T>
+bool
+getVersion(VALUE p, T& v, const char* type)
+{
+    assert(checkIsInstance(p, type));
+    volatile VALUE major = callRuby(rb_ivar_get, p, rb_intern("@major"));
+    volatile VALUE minor = callRuby(rb_ivar_get, p, rb_intern("@minor"));
+
+    long m;
+
+    m = getInteger(major);
+    if(m < 0 || m > 255)
+    {
+        throw RubyException(rb_eTypeError, "version major must be a value between 0 and 255");
+        return false;
+    }
+    v.major = m;
+
+    m = getInteger(minor);
+    if(m < 0 || m > 255)
+    {
+        throw RubyException(rb_eTypeError, "version minor must be a value between 0 and 255");
+        return false;
+    }
+    v.minor = m;
+
+    return true;
+}
+
+template<typename T>
+VALUE
+createVersion(const T& version, const char* type)
+{
+    volatile VALUE rbType = callRuby(rb_path2class, type);
+    assert(!NIL_P(rbType));
+
+    volatile VALUE obj = callRuby(rb_class_new_instance, 0, static_cast<VALUE*>(0), rbType);
+
+    if(!setVersion<T>(obj, version, type))
+    {
+        return Qnil;
+    }
+
+    return obj;
+}
+
+template<typename T>
+VALUE
+versionToString(VALUE p, const char* type)
+{
+    volatile VALUE rbType = callRuby(rb_path2class, type);
+    assert(!NIL_P(rbType));
+    if(callRuby(rb_obj_is_instance_of, p, rbType) != Qtrue)
+    {
+        throw RubyException(rb_eTypeError, "argument is not an instance of %s", type);
+    }
+
+    T v;
+    if(!getVersion<T>(p, v, type))
+    {
+        return Qnil;
+    }
+
+    ICE_RUBY_TRY
+    {
+        string s = IceInternal::versionToString<T>(v);
+        return createString(s);
+    }
+    ICE_RUBY_CATCH
+    return Qnil;
+}
+
+template<typename T>
+VALUE
+stringToVersion(VALUE p, const char* type)
+{
+    string str = getString(p);
+
+    ICE_RUBY_TRY
+    {
+        T v = IceInternal::stringToVersion<T>(str);
+        return createVersion<T>(v, type);
+    }
+    ICE_RUBY_CATCH
+    return Qnil;
+}
+
+char Ice_ProtocolVersion[] = "Ice::ProtocolVersion";
+char Ice_EncodingVersion[] = "Ice::EncodingVersion";
+
+}
+
+extern "C"
+VALUE
+IceRuby_stringVersion(int /*argc*/, VALUE* /*argv*/, VALUE /*self*/)
+{
+    ICE_RUBY_TRY
+    {
+        string s = ICE_STRING_VERSION;
+        return createString(s);
+    }
+    ICE_RUBY_CATCH
+    return Qnil;
+}
+
+extern "C"
+VALUE
+IceRuby_intVersion(int /*argc*/, VALUE* /*argv*/, VALUE /*self*/)
+{
+    ICE_RUBY_TRY
+    {
+        return INT2FIX(ICE_INT_VERSION);
+    }
+    ICE_RUBY_CATCH
+    return Qnil;
+}
+
+extern "C"
+VALUE
+IceRuby_currentProtocol(int /*argc*/, VALUE* /*argv*/, VALUE /*self*/)
+{
+    ICE_RUBY_TRY
+    {
+        return createProtocolVersion(Ice::currentProtocol);
+    }
+    ICE_RUBY_CATCH
+    return Qnil;
+}
+
+extern "C"
+VALUE
+IceRuby_currentProtocolEncoding(int /*argc*/, VALUE* /*argv*/, VALUE /*self*/)
+{
+    ICE_RUBY_TRY
+    {
+        return createEncodingVersion(Ice::currentProtocolEncoding);
+    }
+    ICE_RUBY_CATCH
+    return Qnil;
+}
+
+extern "C"
+VALUE
+IceRuby_currentEncoding(int /*argc*/, VALUE* /*argv*/, VALUE /*self*/)
+{
+    ICE_RUBY_TRY
+    {
+        return createEncodingVersion(Ice::currentEncoding);
+    }
+    ICE_RUBY_CATCH
+    return Qnil;
+}
+
+extern "C"
+VALUE
+IceRuby_protocolVersionToString(VALUE /*self*/, VALUE v)
+{
+    return versionToString<Ice::ProtocolVersion>(v, Ice_ProtocolVersion);
+}
+
+extern "C"
+VALUE
+IceRuby_stringToProtocolVersion(VALUE /*self*/, VALUE v)
+{
+    return stringToVersion<Ice::ProtocolVersion>(v, Ice_ProtocolVersion);
+}
+
+extern "C"
+VALUE
+IceRuby_encodingVersionToString(VALUE /*self*/, VALUE v)
+{
+    return versionToString<Ice::EncodingVersion>(v, Ice_EncodingVersion);
+}
+
+extern "C"
+VALUE
+IceRuby_stringToEncodingVersion(VALUE /*self*/, VALUE v)
+{
+    return stringToVersion<Ice::EncodingVersion>(v, Ice_EncodingVersion);
+}
+
+void
+IceRuby::initUtil(VALUE iceModule)
+{
+    rb_define_module_function(iceModule, "stringVersion", CAST_METHOD(IceRuby_stringVersion), -1);
+    rb_define_module_function(iceModule, "intVersion", CAST_METHOD(IceRuby_intVersion), -1);
+    rb_define_module_function(iceModule, "currentProtocol", CAST_METHOD(IceRuby_currentProtocol), -1);
+    rb_define_module_function(iceModule, "currentProtocolEncoding", CAST_METHOD(IceRuby_currentProtocolEncoding), -1);
+    rb_define_module_function(iceModule, "currentEncoding", CAST_METHOD(IceRuby_currentEncoding), -1);
+    rb_define_module_function(iceModule, "protocolVersionToString", CAST_METHOD(IceRuby_protocolVersionToString), 1);
+    rb_define_module_function(iceModule, "stringToProtocolVersion", CAST_METHOD(IceRuby_stringToProtocolVersion), 1);
+    rb_define_module_function(iceModule, "encodingVersionToString", CAST_METHOD(IceRuby_encodingVersionToString), 1);
+    rb_define_module_function(iceModule, "stringToEncodingVersion", CAST_METHOD(IceRuby_stringToEncodingVersion), 1);
+}
+
+IceRuby::RubyException::RubyException()
+{
+    ex = rb_gv_get("$!");
+}
+
+IceRuby::RubyException::RubyException(VALUE exv) :
+    ex(exv)
+{
+}
+
+IceRuby::RubyException::RubyException(VALUE exClass, const char* fmt, ...)
+{
+    va_list args;
+    char buf[BUFSIZ];
+
+    va_start(args, fmt);
+    vsnprintf(buf, BUFSIZ, fmt, args);
+    buf[BUFSIZ - 1] = '\0';
+    va_end(args);
+
+    ex = callRuby(rb_exc_new2, exClass, buf);
+}
+
+ostream&
+IceRuby::RubyException::operator<<(ostream& ostr) const
+{
+    volatile VALUE cls = rb_class_path(CLASS_OF(ex));
+    volatile VALUE msg = rb_obj_as_string(ex);
+    ostr << RSTRING_PTR(cls) << ": " << RSTRING_PTR(msg);
+    return ostr;
+}
+
+bool
+IceRuby::isString(VALUE val)
+{
+    return TYPE(val) == T_STRING || callRuby(rb_respond_to, val, rb_intern("to_str")) != 0;
+}
+
+bool
+IceRuby::isArray(VALUE val)
+{
+    return TYPE(val) == T_ARRAY || callRuby(rb_respond_to, val, rb_intern("to_arr")) != 0;
+}
+
+bool
+IceRuby::isHash(VALUE val)
+{
+    return TYPE(val) == T_HASH || callRuby(rb_respond_to, val, rb_intern("to_hash")) != 0;
+}
+
+string
+IceRuby::getString(VALUE val)
+{
+    volatile VALUE result = callRuby(rb_string_value, &val);
+    return string(RSTRING_PTR(result), RSTRING_LEN(result));
+}
+
+VALUE
+IceRuby::createString(const string& str)
+{
+#ifdef HAVE_RUBY_ENCODING_H
+    return callRuby(rb_enc_str_new, str.c_str(), static_cast<long>(str.size()), rb_utf8_encoding());
+#else
+    return callRuby(rb_str_new, str.c_str(), static_cast<long>(str.size()));
+#endif
+}
+
+namespace
+{
+
+template <typename T> 
+struct RubyCallArgs
+{
+    volatile VALUE val;
+    T ret;
+};
+
+//
+// Wrapper function to call rb_num2long with rb_protect
+//
+VALUE
+rb_num2long_wrapper(VALUE val)
+{
+    RubyCallArgs<long>* data = (RubyCallArgs<long>*)val;
+    data->ret = rb_num2long(data->val);
+    return val;
+}
+
+//
+// Wrapper function to call rb_num2ll with rb_protect
+//
+VALUE
+rb_num2ll_wrapper(VALUE val)
+{
+    RubyCallArgs<Ice::Long>* data = (RubyCallArgs<Ice::Long>*)val;
+    data->ret = rb_num2ll(data->val);
+    return val;
+}
+
+}
+
+long
+IceRuby::getInteger(VALUE val)
+{
+    RubyCallArgs<long> arg= {val, -1};
+    int error = 0;
+    rb_protect(rb_num2long_wrapper, (VALUE)&arg, &error);
+    if(error)
+    {
+        throw RubyException(rb_eTypeError, "unable to convert value to an int");
+    }
+    return arg.ret;
+}
+
+Ice::Long
+IceRuby::getLong(VALUE val)
+{
+    RubyCallArgs<Ice::Long> arg= {val, -1};
+    int error = 0;
+    rb_protect(rb_num2ll_wrapper, (VALUE)&arg, &error);
+    if(error)
+    {
+        throw RubyException(rb_eTypeError, "unable to convert value to a long");
+    }
+    return arg.ret;
+}
+
+bool
+IceRuby::arrayToStringSeq(VALUE val, vector<string>& seq)
+{
+    volatile VALUE arr = callRuby(rb_check_array_type, val);
+    if(NIL_P(arr))
+    {
+        return false;
+    }
+    for(long i = 0; i < RARRAY_LEN(arr); ++i)
+    {
+        string s = getString(RARRAY_PTR(arr)[i]);
+        seq.push_back(getString(RARRAY_PTR(arr)[i]));
+    }
+    return true;
+}
+
+VALUE
+IceRuby::stringSeqToArray(const vector<string>& seq)
+{
+    volatile VALUE result = createArray(seq.size());
+    long i = 0;
+    if(seq.size() > 0)
+    {
+        for(vector<string>::const_iterator p = seq.begin(); p != seq.end(); ++p, ++i)
+        {
+            RARRAY_PTR(result)[i] = createString(*p);
+        }
+    }
+    return result;
+}
+
+namespace
+{
+
+struct HashToContextIterator : public IceRuby::HashIterator
+{
+    HashToContextIterator(Ice::Context& c) : ctx(c)
+    {
+    }
+
+    virtual void element(VALUE key, VALUE value)
+    {
+        string kstr = IceRuby::getString(key);
+        string vstr = IceRuby::getString(value);
+        ctx[kstr] = vstr;
+    }
+
+    Ice::Context& ctx;
+};
+
+}
+
+bool
+IceRuby::hashToContext(VALUE val, Ice::Context& ctx)
+{
+    if(TYPE(val) != T_HASH)
+    {
+        val = callRuby(rb_convert_type, val, T_HASH, "Hash", "to_hash");
+        if(NIL_P(val))
+        {
+            return false;
+        }
+    }
+    HashToContextIterator iter(ctx);
+    hashIterate(val, iter);
+    return true;
+}
+
+VALUE
+IceRuby::contextToHash(const Ice::Context& ctx)
+{
+    volatile VALUE result = callRuby(rb_hash_new);
+    for(Ice::Context::const_iterator p = ctx.begin(); p != ctx.end(); ++p)
+    {
+        volatile VALUE key = callRuby(rb_str_new, p->first.c_str(), static_cast<long>(p->first.size()));
+        volatile VALUE value = callRuby(rb_str_new, p->second.c_str(), static_cast<long>(p->second.size()));
+        callRuby(rb_hash_aset, result, key, value);
+    }
+    return result;
+}
+
+extern "C"
+VALUE
+IceRuby_Util_hash_foreach_callback(VALUE val, VALUE arg)
+{
+    VALUE key = rb_ary_entry(val, 0);
+    VALUE value = rb_ary_entry(val, 1);
+
+    //
+    // We can't allow any C++ exceptions to propagate out of this function.
+    //
+    ICE_RUBY_TRY
+    {
+        IceRuby::HashIterator* iter = reinterpret_cast<IceRuby::HashIterator*>(arg);
+        iter->element(key, value);
+    }
+    ICE_RUBY_CATCH
+    return val;
+}
+
+extern "C"
+{
+typedef VALUE (*ICE_RUBY_HASH_FOREACH_CALLBACK)(...);
+}
+
+void
+IceRuby::hashIterate(VALUE h, HashIterator& iter)
+{
+    assert(TYPE(h) == T_HASH);
+    callRuby(rb_iterate, rb_each, h,
+             reinterpret_cast<ICE_RUBY_HASH_FOREACH_CALLBACK>(IceRuby_Util_hash_foreach_callback),
+             reinterpret_cast<VALUE>(&iter));
+}
+
+Ice::Identity
+IceRuby::getIdentity(VALUE v)
+{
+    volatile VALUE cls = callRuby(rb_path2class, "Ice::Identity");
+    assert(!NIL_P(cls));
+
+    if(callRuby(rb_obj_is_kind_of, v, cls) == Qfalse)
+    {
+        throw RubyException(rb_eTypeError, "value is not an Ice::Identity");
+    }
+
+    volatile VALUE name = callRuby(rb_iv_get, v, "@name");
+    volatile VALUE category = callRuby(rb_iv_get, v, "@category");
+
+    if(!NIL_P(category) && !isString(category))
+    {
+        throw RubyException(rb_eTypeError, "identity category must be a string");
+    }
+
+    if(NIL_P(name) || !isString(name))
+    {
+        throw RubyException(rb_eTypeError, "identity name must be a string");
+    }
+
+    Ice::Identity result;
+    result.name = getString(name);
+    if(!NIL_P(category))
+    {
+        result.category = getString(category);
+    }
+    return result;
+}
+
+VALUE
+IceRuby::createIdentity(const Ice::Identity& id)
+{
+    volatile VALUE cls = callRuby(rb_path2class, "Ice::Identity");
+    assert(!NIL_P(cls));
+
+    volatile VALUE result = callRuby(rb_class_new_instance, 0, reinterpret_cast<VALUE*>(0), cls);
+    volatile VALUE name = callRuby(rb_str_new, id.name.c_str(), static_cast<long>(id.name.size()));
+    volatile VALUE category = callRuby(rb_str_new, id.category.c_str(), static_cast<long>(id.category.size()));
+    callRuby(rb_iv_set, result, "@name", name);
+    callRuby(rb_iv_set, result, "@category", category);
+    return result;
+}
+
+VALUE
+IceRuby::createProtocolVersion(const Ice::ProtocolVersion& v)
+{
+    return createVersion<Ice::ProtocolVersion>(v, Ice_ProtocolVersion);
+}
+
+VALUE
+IceRuby::createEncodingVersion(const Ice::EncodingVersion& v)
+{
+    return createVersion<Ice::EncodingVersion>(v, Ice_EncodingVersion);
+}
+
+bool
+IceRuby::getEncodingVersion(VALUE p, Ice::EncodingVersion& v)
+{
+    volatile VALUE cls = callRuby(rb_path2class, Ice_EncodingVersion);
+    assert(!NIL_P(cls));
+
+    if(callRuby(rb_obj_is_kind_of, p, cls) == Qfalse)
+    {
+        throw RubyException(rb_eTypeError, "value is not an Ice::EncodingVersion");
+    }
+
+    if(!getVersion<Ice::EncodingVersion>(p, v, Ice_EncodingVersion))
+    {
+        return false;
+    }
+
+    return true;
+}
+
+VALUE
+IceRuby::callProtected(RubyFunction func, VALUE arg)
+{
+    int error = 0;
+    volatile VALUE result = rb_protect(func, arg, &error);
+    if(error)
+    {
+        throw RubyException();
+    }
+    return result;
+}
+
+static void
+setExceptionMembers(const Ice::LocalException& ex, VALUE p)
+{
+    //
+    // Transfer data members from Ice exception to Ruby exception.
+    //
+    try
+    {
+        ex.ice_throw();
+    }
+    catch(const Ice::InitializationException& e)
+    {
+        volatile VALUE v = createString(e.reason);
+        callRuby(rb_iv_set, p, "@reason", v);
+    }
+    catch(const Ice::PluginInitializationException& e)
+    {
+        volatile VALUE v = createString(e.reason);
+        callRuby(rb_iv_set, p, "@reason", v);
+    }
+    catch(const Ice::AlreadyRegisteredException& e)
+    {
+        volatile VALUE v;
+        v = createString(e.kindOfObject);
+        callRuby(rb_iv_set, p, "@kindOfObject", v);
+        v = createString(e.id);
+        callRuby(rb_iv_set, p, "@id", v);
+    }
+    catch(const Ice::NotRegisteredException& e)
+    {
+        volatile VALUE v;
+        v = createString(e.kindOfObject);
+        callRuby(rb_iv_set, p, "@kindOfObject", v);
+        v = createString(e.id);
+        callRuby(rb_iv_set, p, "@id", v);
+    }
+    catch(const Ice::TwowayOnlyException& e)
+    {
+        volatile VALUE v = createString(e.operation);
+        callRuby(rb_iv_set, p, "@operation", v);
+    }
+    catch(const Ice::UnknownException& e)
+    {
+        volatile VALUE v = createString(e.unknown);
+        callRuby(rb_iv_set, p, "@unknown", v);
+    }
+    catch(const Ice::ObjectAdapterDeactivatedException& e)
+    {
+        volatile VALUE v = createString(e.name);
+        callRuby(rb_iv_set, p, "@name", v);
+    }
+    catch(const Ice::ObjectAdapterIdInUseException& e)
+    {
+        volatile VALUE v = createString(e.id);
+        callRuby(rb_iv_set, p, "@id", v);
+    }
+    catch(const Ice::NoEndpointException& e)
+    {
+        volatile VALUE v = createString(e.proxy);
+        callRuby(rb_iv_set, p, "@proxy", v);
+    }
+    catch(const Ice::EndpointParseException& e)
+    {
+        volatile VALUE v = createString(e.str);
+        callRuby(rb_iv_set, p, "@str", v);
+    }
+    catch(const Ice::IdentityParseException& e)
+    {
+        volatile VALUE v = createString(e.str);
+        callRuby(rb_iv_set, p, "@str", v);
+    }
+    catch(const Ice::ProxyParseException& e)
+    {
+        volatile VALUE v = createString(e.str);
+        callRuby(rb_iv_set, p, "@str", v);
+    }
+    catch(const Ice::IllegalIdentityException& e)
+    {
+        volatile VALUE v = IceRuby::createIdentity(e.id);
+        callRuby(rb_iv_set, p, "@id", v);
+    }
+    catch(const Ice::RequestFailedException& e)
+    {
+        volatile VALUE v;
+        v = IceRuby::createIdentity(e.id);
+        callRuby(rb_iv_set, p, "@id", v);
+        v = createString(e.facet);
+        callRuby(rb_iv_set, p, "@facet", v);
+        v = createString(e.operation);
+        callRuby(rb_iv_set, p, "@operation", v);
+    }
+    catch(const Ice::FileException& e)
+    {
+        volatile VALUE v = INT2FIX(e.error);
+        callRuby(rb_iv_set, p, "@error", v);
+        v = createString(e.path);
+        callRuby(rb_iv_set, p, "@path", v);
+    }
+    catch(const Ice::SyscallException& e) // This must appear after all subclasses of SyscallException.
+    {
+        volatile VALUE v = INT2FIX(e.error);
+        callRuby(rb_iv_set, p, "@error", v);
+    }
+    catch(const Ice::DNSException& e)
+    {
+        volatile VALUE v;
+        v = INT2FIX(e.error);
+        callRuby(rb_iv_set, p, "@error", v);
+        v = createString(e.host);
+        callRuby(rb_iv_set, p, "@host", v);
+    }
+    catch(const Ice::UnsupportedProtocolException& e)
+    {
+        VALUE m;
+        m = createProtocolVersion(e.bad);
+        callRuby(rb_iv_set, p, "@bad", m);
+        m = createProtocolVersion(e.supported);
+        callRuby(rb_iv_set, p, "@supported", m);
+    }
+    catch(const Ice::UnsupportedEncodingException& e)
+    {
+        VALUE m;
+        m = createEncodingVersion(e.bad);
+        callRuby(rb_iv_set, p, "@bad", m);
+        m = createEncodingVersion(e.supported);
+        callRuby(rb_iv_set, p, "@supported", m);
+    }
+    catch(const Ice::NoObjectFactoryException& e)
+    {
+        volatile VALUE v;
+        v = createString(e.reason);
+        callRuby(rb_iv_set, p, "@reason", v);
+        v = createString(e.type);
+        callRuby(rb_iv_set, p, "@type", v);
+    }
+    catch(const Ice::UnexpectedObjectException& e)
+    {
+        volatile VALUE v;
+        v = createString(e.reason);
+        callRuby(rb_iv_set, p, "@reason", v);
+        v = createString(e.type);
+        callRuby(rb_iv_set, p, "@type", v);
+        v = createString(e.expectedType);
+        callRuby(rb_iv_set, p, "@expectedType", v);
+    }
+    catch(const Ice::ProtocolException& e) // This must appear after all subclasses of ProtocolException.
+    {
+        volatile VALUE v = createString(e.reason);
+        callRuby(rb_iv_set, p, "@reason", v);
+    }
+    catch(const Ice::FeatureNotSupportedException& e)
+    {
+        volatile VALUE v = createString(e.unsupportedFeature);
+        callRuby(rb_iv_set, p, "@unsupportedFeature", v);
+    }
+    catch(const Ice::SecurityException& e)
+    {
+        volatile VALUE v = createString(e.reason);
+        callRuby(rb_iv_set, p, "@reason", v);
+    }
+    catch(const Ice::LocalException&)
+    {
+        //
+        // Nothing to do.
+        //
+    }
+}
+
+VALUE
+IceRuby::createArrayHelper(long sz)
+{
+    volatile VALUE arr = callRuby(rb_ary_new2, sz);
+    if(sz > 0)
+    {
+        callRubyVoid(rb_ary_store, arr, sz - 1, Qnil);
+    }
+    return arr;
+}
+
+VALUE
+IceRuby::convertLocalException(const Ice::LocalException& ex)
+{
+    //
+    // We cannot throw a C++ exception or raise a Ruby exception. If an error
+    // occurs while we are converting the exception, we do our best to return
+    // an appropriate Ruby exception.
+    //
+    try
+    {
+        string name = ex.ice_name();
+        volatile VALUE cls = callRuby(rb_path2class, name.c_str());
+        if(NIL_P(cls))
+        {
+            throw RubyException(rb_eRuntimeError, "exception class `%s' not found", name.c_str());
+        }
+        volatile VALUE result = callRuby(rb_class_new_instance, 0, reinterpret_cast<VALUE*>(0), cls);
+        setExceptionMembers(ex, result);
+        return result;
+    }
+    catch(const RubyException& e)
+    {
+        return e.ex;
+    }
+    catch(...)
+    {
+        string msg = "failure occurred while converting exception " + ex.ice_name();
+        return rb_exc_new2(rb_eRuntimeError, msg.c_str());
+    }
+}