0
@@ -62,6 +62,7 @@ static VALUE native_compile(VALUE self, VALUE script, VALUE filename, VALUE line
0
   Data_Get_Struct(self, JohnsonRuntime, runtime);
0
 
0
   JSContext * context = johnson_get_current_context(runtime);
0
+  JohnsonContext * johnson_context = OUR_CONTEXT(context);
0
 
0
   JSScript * compiled_js = JS_CompileScript(
0
       context,
0
@@ -71,7 +72,22 @@ static VALUE native_compile(VALUE self, VALUE script, VALUE filename, VALUE line
0
       StringValueCStr(filename),
0
       (unsigned)NUM2INT(linenum)
0
   );
0
+  if(compiled_js == NULL) {
0
+    if (JS_IsExceptionPending(context))
0
+    {
0
+      // If there's an exception pending here, it's a syntax error.
0
+      JS_GetPendingException(context, &johnson_context->ex);
0
+      JS_ClearPendingException(context);
0
+    }
0
+
0
+    if (johnson_context->ex) {
0
+      RAISE_JS_ERROR(self, johnson_context->ex);
0
+      return Qnil;
0
+    }
0
+  }
0
+
0
   JSObject * script_object = JS_NewScriptObject(context, compiled_js);
0
+
0
   PREPARE_RUBY_JROOTS(context, 1);
0
   JROOT(script_object);
0
   JRETURN_RUBY(make_ruby_land_proxy(runtime, OBJECT_TO_JSVAL(script_object)));

0
@@ -26,7 +26,8 @@ module Johnson #:nodoc:
0
       ###
0
       # Evaluate +script+ with +filename+ and +linenum+
0
       def evaluate(script, filename = nil, linenum = nil)
0
-        evaluate_compiled_script(compile(script, filename, linenum))
0
+        compiled_script = compile(script, filename, linenum)
0
+        evaluate_compiled_script(compiled_script)
0
       end
0
 
0
       ###

0
@@ -14,6 +14,15 @@ module Johnson
0
       assert_equal(1, @runtime.evaluate('eval("1");'))
0
     end
0
 
0
+    def test_js_throws_compile_errors
0
+      assert_raises(Johnson::Error) {
0
+        @runtime.evaluate("var js_lambda = function(x) { return x ** 2; }")
0
+      }
0
+      assert_raises(Johnson::Error) {
0
+        @runtime.compile("var js_lambda = function(x) { return x ** 2; }")
0
+      }
0
+    end
0
+
0
     def test_breakpoint_gets_called
0
       break_times = 0
0
       @runtime['some_number'] = 0