WIP

src/engine/thread.js

@@ -0,0 +1,19 @@
+/**
+ * Thread is an internal data structure used by the interpreter. It holds the
+ * state of a thread so it can continue from where it left off, and it has
+ * a stack to support nested control structures and procedure calls.
+ *
+ * @param {String} Unique block identifier
+ */
+function Thread (id) {
+    this.topBlockId = id;
+    this.blockPointer = id;
+    this.blockFirstTime = -1;
+    this.nextBlock = null;
+    this.waiting = null;
+    this.runningDeviceBlock = false;
+    this.stack = [];
+    this.repeatCounter = -1;
+}
+
+module.exports = Thread;