1 files changed, 91 insertions, 0 deletions
diff --git a/assets/javascript/utils/execute.js b/assets/javascript/utils/execute.js
new file mode 100644
index 0000000..ba4192d
--- /dev/null
+++ b/assets/javascript/utils/execute.js
@@ -0,0 +1,91 @@
+define(function(){
+    var evalJS = function(code, callback) {
+        var ready = false;
+        var finished = false;
+
+        var finish = function() {
+            if(finished) {
+                return console.error('Already finished');
+            }
+            finished = true;
+            return callback.apply(null, arguments);
+        };
+
+        var jsrepl;
+
+        // Handles all our events
+        var eventHandler = function(data, eventType) {
+            console.log([eventType, data]);
+            switch(eventType) {
+                case 'progress':
+                    // Update UI loading bar
+                    break;
+                case 'timeout':
+                    finish(new Error(data));
+                    break;
+                case 'result':
+                    finish(null, {
+                        value: data,
+                        type: 'result'
+                    });
+                    break;
+                case 'error':
+                    if(ready) {
+                        return finish(null, {
+                            value: data,
+                            type: 'error'
+                        });
+                    }
+                    return finish(new Error(data));
+                    break
+                case 'ready':
+                    // We're good to get results and stuff back now
+                    ready = true;
+                    // Eval our code now that the runtime is ready
+                    jsrepl.eval(code);
+                    break;
+                default:
+                    console.log('Unhandled event =', eventType, 'data =', data);
+            }
+        };
+
+        jsrepl = new JSREPL({
+            input: eventHandler,
+            output: eventHandler,
+            result: eventHandler,
+            error: eventHandler,
+            progress: eventHandler,
+            timeout: {
+                time: 30000,
+                callback: eventHandler
+            }
+        });
+
+        jsrepl.loadLanguage('javascript', eventHandler);
+    };
+
+
+    var ass = "function assert(condition, message) { \nif (!condition) { \n throw message || \"Assertion failed\"; \n } \n }\n";
+
+    var code = {
+        "base": "var firstName = \"John\";\nvar middleName = \"James\";\nvar lastName = \"Smith\";\n\nvar fullName =",
+        "solution": "var firstName = \"John\";\nvar middleName = \"James\";\nvar lastName = \"Smith\";\n\nvar fullName = firstName + \" \" + middleName + \" \" + lastName;",
+        "validation": "console.log(fullName); assert(fullName == 'John James Smith');"
+    };    
+
+    var execute = function(solution, validation, callback) {
+        evalJS(solution + ass + validation, function(err, res) {
+            if(err) {
+                return callback(err);
+            }
+            console.log('validation =', res);
+            if (res.type == "error") {
+                callback(new Error(res.value));
+            } else {
+                callback(null, res.value);
+            }
+        });
+    };
+
+    return execute;
+});
+\ No newline at end of file