Parser now works with variables passed into scope

app/imports/parser/parseTree/SymbolNode.js

@@ -13,15 +13,32 @@ export default class SymbolNode extends ParseNode {
   compile(scope){
     let value = scope && scope[this.name];
     let type = typeof value;
+    // For objects, get their value
+    if (type === 'object'){
+      value = value.value;
+      type = typeof value;
+    }
     if (type === 'string' || type === 'number' || type === 'boolean'){
       return new ConstantNode({value, type, previousNodes: [this]});
     } else if (type === 'undefined'){
-      return new ErrorNode({
-        node: this,
-        error: `${this.name} could not be resolved`,
+      return new SymbolNode({
+        name: this.name,
+        previousNodes: [this],
       });
     } else {
       throw new Meteor.Error(`Unexpected case: ${this.name} resolved to ${value}`);
     }
   }
+  reduce(scope){
+    let result = this.compile(scope);
+    if (result instanceof SymbolNode){
+      return new ErrorNode({
+        node: result,
+        error: `${this.toString()} could not be resolved`,
+        previousNodes: [result],
+      });
+    } else {
+      return result;
+    }
+  }
 }