Parser now uses context to store details of the computation

app/imports/parser/parseTree/ParseNode.js

@@ -1,30 +1,29 @@
 export default class ParseNode {
-  constructor({previousNodes, detail}){
-    this.inheritDetails(previousNodes);
-    if (detail) this.pushDetails([detail]);
-  }
-  inheritDetails(nodes){
-    if (!nodes || !nodes.length) return;
-    nodes.forEach(node => this.pushDetails(node.details));
-  }
-  pushDetails(details){
-    if (!details || !details.length) return;
-    if (!this.details) this.details = [];
-    details.forEach(detail => this.details.push(detail));
-  }
-  compile(){
-    // Returns a ParseNode, a ConstantNode if possible
-    throw new Meteor.Error('Compile not implemented on ' + this.constructor.name);
-  }
   toString(){
     throw new Meteor.Error('toString not implemented on ' + this.constructor.name);
+  }
+  compile(scope, context){
+    // Returns a ParseNode, a ConstantNode if possible
+    if(this.resolve) {
+      return this.resolve('compile', scope, context);
+    } else {
+      throw new Meteor.Error('Compile not implemented on ' + this.constructor.name);
+    }
   }
 	// Compile, but turn rolls into arrays
-  roll(scope){
-    return this.compile(scope);
+  roll(scope, context){
+    if (this.resolve){
+      return this.resolve('roll', scope, context);
+    } else {
+      return this.compile(scope, context);
+    }
   }
 	// Compile, turn rolls into arrays, and reduce those arrays into single values
-	reduce(scope){
-		return this.roll(scope);
+	reduce(scope, context){
+    if (this.resolve){
+      return this.resolve('reduce', scope, context);
+    } else {
+      return this.roll(scope, context);
+    }
 	}
 }