Allowed effects and calculations to target nearest ancestors of #type

app/imports/api/creature/computation/ComputationMemo.js

@@ -1,4 +1,5 @@
 import { includes, cloneDeep } from 'lodash';
+import findAncestorByType from '/imports/api/creature/computation/findAncestorByType.js';
 
 // The computation memo is an in-memory data structure used only during the
 // computation process
@@ -141,7 +142,7 @@ export default class ComputationMemo {
     prop = this.registerProperty(prop);
     let targets = this.getEffectTargets(prop);
     targets.forEach(target => {
-      if (target.computationDetails.effects){
+      if (target.computationDetails && target.computationDetails.effects){
         target.computationDetails.effects.push(prop);
       }
     });
@@ -153,7 +154,16 @@ export default class ComputationMemo {
     let targets = new Set();
     if (!prop.stats) return targets;
     prop.stats.forEach((statName) => {
-      let target = this.statsByVariableName[statName];
+      let target;
+      if (statName[0] === '#'){
+        target = findAncestorByType({
+          type: statName.slice(1),
+          prop,
+          memo: this
+        });
+      } else {
+        target = this.statsByVariableName[statName];
+      }
       if (!target) return;
       targets.add(target);
       if (isSkillOperation(prop) && isAbility(target)){

app/imports/api/creature/computation/EffectAggregator.js

@@ -8,7 +8,11 @@ export default class EffectAggregator{
         result,
         context,
         dependencies
-      } = evaluateCalculation(stat.baseValueCalculation, memo);
+      } = evaluateCalculation({
+        string: stat.baseValueCalculation,
+        prop: stat,
+        memo
+      });
       this.statBaseValue = result.value;
       stat.dependencies.push(...dependencies);
       if (context.errors.length){

app/imports/api/creature/computation/combineStat.js

@@ -38,7 +38,11 @@ function combineAttribute(stat, aggregator, memo){
       result,
       context,
       dependencies
-    } = evaluateCalculation(stat.spellSlotLevelCalculation, memo);
+    } = evaluateCalculation({
+      string: stat.spellSlotLevelCalculation,
+      memo,
+      prop: stat,
+    });
     stat.spellSlotLevelValue = result.value;
     stat.spellSlotLevelErrors = context.errors;
     stat.dependencies.push(...dependencies);

app/imports/api/creature/computation/computeEffect.js

@@ -38,7 +38,11 @@ export default function computeEffect(effect, memo){
       result,
       context,
       dependencies,
-    } = evaluateCalculation(effect.calculation, memo);
+    } = evaluateCalculation({
+      string: effect.calculation,
+      prop: effect,
+      memo
+    });
     effect.result = result.value;
     effect.dependencies.push(...dependencies);
     if (context.errors.length){

app/imports/api/creature/computation/computeEndStepProperty.js

@@ -33,7 +33,7 @@ function computeAction(prop, memo){
     result,
     context,
     dependencies,
-  } = evaluateCalculation(prop.uses, memo);
+  } = evaluateCalculation({ string: prop.uses, prop, memo});
   prop.usesResult = result.value;
   prop.dependencies.push(...dependencies);
   if (context.errors.length){
@@ -85,7 +85,7 @@ function computePropertyField(prop, memo, fieldName, fn){
     result,
     context,
     dependencies,
-  } = evaluateCalculation(prop[fieldName], memo, fn);
+  } = evaluateCalculation({string: prop[fieldName], prop, memo, fn});
   if (result instanceof ConstantNode){
     prop[`${fieldName}Result`] = result.value;
   } else {

app/imports/api/creature/computation/computeInlineCalculations.js

@@ -19,7 +19,7 @@ function computeInlineCalcsForField(prop, memo, field){
       result,
       context,
       dependencies,
-    } = evaluateCalculation(calculation, memo, 'compile');
+    } = evaluateCalculation({string: calculation, prop, memo, fn: 'compile'});
     let computation = {
       calculation,
       result: result.toString(),

app/imports/api/creature/computation/computeToggle.js

@@ -30,7 +30,7 @@ export default function computeToggle(toggle, memo){
       result,
       context,
       dependencies,
-    } = evaluateCalculation(toggle.condition, memo);
+    } = evaluateCalculation({string: toggle.condition, prop: toggle, memo});
     toggle.toggleResult = !!result.value;
     toggle.dependencies.push(...dependencies);
     if (context.errors.length){

app/imports/api/creature/computation/evaluateCalculation.js

@@ -3,9 +3,15 @@ import { parse, CompilationContext } from '/imports/parser/parser.js';
 import SymbolNode from '/imports/parser/parseTree/SymbolNode.js';
 import AccessorNode from '/imports/parser/parseTree/AccessorNode.js';
 import ConstantNode from '/imports/parser/parseTree/ConstantNode.js';
+import findAncestorByType from '/imports/api/creature/computation/findAncestorByType.js';
 
 /* Convert a calculation into a constant output and errors*/
-export default function evaluateCalculation(string, memo, fn = 'reduce'){
+export default function evaluateCalculation({
+  string,
+  prop,
+  memo,
+  fn = 'reduce',
+}){
   let dependencies = [];
   let errors = [];
   if (!string) return {
@@ -38,8 +44,15 @@ export default function evaluateCalculation(string, memo, fn = 'reduce'){
   // Ensure all symbol nodes are defined and computed
   calc.traverse(node => {
     if (node instanceof SymbolNode || node instanceof AccessorNode){
-      let stat = memo.statsByVariableName[node.name];
-      if (stat && !stat.computationDetails.computed){
+      // References up the tree start with $
+      let stat;
+      if (node.name[0] === '#'){
+        stat = findAncestorByType({type: node.name.slice(1), prop, memo});
+        memo.statsByVariableName[node.name] = stat;
+      } else {
+        stat = memo.statsByVariableName[node.name];
+      }
+      if (stat && stat.computationDetails && !stat.computationDetails.computed){
         computeStat(stat, memo);
       }
       if (stat) dependencies.push(stat._id || node.name, ...stat.dependencies);

app/imports/api/creature/computation/findAncestorByType.js

@@ -0,0 +1,10 @@
+export default function findAncestorByType({type, prop, memo}){
+  if (!prop || !prop.ancestors) return;
+  let ancestor;
+  for (let i = prop.ancestors.length - 1; i >= 0; i--){
+    ancestor = memo.propsById[prop.ancestors[i].id];
+    if (ancestor && ancestor.type === type){
+      return ancestor;
+    }
+  }
+}

app/imports/parser/grammar.js

@@ -24,7 +24,7 @@ function id(x) { return x[0]; }
       value: s => s.slice(1, -1),
     },
     name: {
-      match: /[a-zA-Z_]*[a-ce-zA-Z_][a-zA-Z0-9_]*/,
+      match: /[a-zA-Z_#]*[a-ce-zA-Z_#][a-zA-Z0-9_#]*/,
       type: moo.keywords({
         'keywords': ['true', 'false'],
       }),

app/imports/parser/grammar.ne

@@ -22,7 +22,7 @@
       value: s => s.slice(1, -1),
     },
     name: {
-      match: /[a-zA-Z_]*[a-ce-zA-Z_][a-zA-Z0-9_]*/,
+      match: /[a-zA-Z_#]*[a-ce-zA-Z_#][a-zA-Z0-9_#]*/,
       type: moo.keywords({
         'keywords': ['true', 'false'],
       }),

app/imports/parser/parseTree/AccessorNode.js

@@ -7,7 +7,7 @@ export default class AccessorNode extends ParseNode {
     this.name = name;
     this.path = path;
   }
-  compile(scope){
+  compile(scope, context){
     let value = scope && scope[this.name];
     // For objects, get their value
     this.path.forEach(name => {
@@ -16,14 +16,21 @@ export default class AccessorNode extends ParseNode {
     });
     let type = typeof value;
     if (type === 'string' || type === 'number' || type === 'boolean'){
-      return new ConstantNode({value, type, previousNodes: [this]});
+      return new ConstantNode({value, type});
     } else if (type === 'undefined'){
       return new AccessorNode({
         name: this.name,
         path: this.path,
       });
     } else {
-      throw new Meteor.Error(`Unexpected case: ${this.name} resolved to ${value}`);
+      if (context) context.storeError({
+        type: 'error',
+        message: `${this.name} returned an unexpected type`
+      });
+      return new AccessorNode({
+        name: this.name,
+        path: this.path,
+      });
     }
   }
   reduce(scope, context){