Javascript, Octave, R - Improve exceptions for %catches

and exception specifications for native types.

Now the raised exception contains the string value as the exception
message instead of just the C/C++ type of the exception.

R exceptions were completely swallowed beforehand

Lib/javascript/jsc/javascriptrun.swg

@@ -7,23 +7,27 @@
 #define SWIG_exception(code, msg) do { SWIG_JSC_exception(context, exception, code, msg); SWIG_fail; } while (0)
 #define SWIG_fail                 goto fail
 
-SWIGRUNTIME void SWIG_Javascript_Raise(JSContextRef context, JSValueRef *exception, const char* type) {
-  JSStringRef message = JSStringCreateWithUTF8CString(type);
+SWIGRUNTIME void SWIG_Javascript_Raise_ValueRef(JSContextRef context, JSValueRef *exception, JSValueRef valRef) {
   JSValueRef error_arguments[1]; 
   JSObjectRef exception_object;
-  JSValueRef exception_value;
-  exception_value = JSValueMakeString(context, message);
   /* Converting the result to an object will let JavascriptCore add 
      "sourceURL" (file) and "line" (number) and "message" to the exception,
      instead of just returning a raw string. This is extremely important for debugging your errors.
      Using JSObjectMakeError is better than JSValueToObject because the latter only populates
      "sourceURL" and "line", but not "message" or any others I don't know about.
    */
-  error_arguments[0] = exception_value;
+  error_arguments[0] = valRef;
   exception_object = JSObjectMakeError(context, 1, error_arguments, NULL);
 
   /* Return the exception_object */
   *exception = exception_object;
+}
+
+SWIGRUNTIME void SWIG_Javascript_Raise(JSContextRef context, JSValueRef *exception, const char* msg) {
+  JSStringRef message = JSStringCreateWithUTF8CString(msg);
+  JSValueRef exception_value = JSValueMakeString(context, message);
+
+  SWIG_Javascript_Raise_ValueRef(context, exception, exception_value);
 
   JSStringRelease(message);
 }

Lib/javascript/jsc/javascripttypemaps.swg

@@ -41,7 +41,7 @@
 #define SWIG_SetConstant(name, obj)
 
 /* raise */
-#define SWIG_Raise(obj, type, desc)  SWIG_Javascript_Raise(context, exception, type)
+#define SWIG_Raise(obj, type, desc)  SWIG_Javascript_Raise_ValueRef(context, exception, obj)
 
 %insert("runtime") %{
 #define SWIG_JSC_FROM_DECL_ARGS(arg1)              (JSContextRef context, arg1)

Lib/javascript/v8/javascriptrun.swg

@@ -96,6 +96,11 @@ SWIGINTERN void SWIG_V8_Raise(const char *msg) {
   SWIGV8_THROW_EXCEPTION(v8::Exception::Error(SWIGV8_STRING_NEW(msg)));
 }
 
+SWIGINTERN void SWIG_V8_Raise(SWIGV8_VALUE obj, const char *msg) {
+  SWIGV8_THROW_EXCEPTION(obj);
+}
+
+
 /*
   Note: There are two contexts for handling errors.
   A static V8ErrorHandler is used in not overloaded methods.

Lib/javascript/v8/javascripttypemaps.swg

@@ -37,7 +37,7 @@
 #define SWIG_SetConstant(name, obj)
 
 /* raise */
-#define SWIG_Raise(obj, type, desc)  SWIG_V8_Raise(type)
+#define SWIG_Raise(obj, type, desc)  SWIG_V8_Raise(obj, type)
 
 /* Include the unified typemap library */
 %include <typemaps/swigtypemaps.swg>