feat: type graphing

packages/behavior/context/context.js

@@ -1,3 +1,4 @@
+import {arrayUnique, flatten, mapObject} from '@avocado/core';
 import D from 'debug';
 import {invokeHookFlat} from 'scwp';
 
@@ -14,6 +15,27 @@ export class Context {
     this.addObjectMap(defaults);
   }
 
+  static allTypesDigraph() {
+    return Object.keys(this.types())
+      .reduce((r, type) => ({...r, [type]: this.typeDigraph(type)}), {});
+  }
+
+  static allTypesInvertedDigraph() {
+    const digraph = this.allTypesDigraph();
+    const inverted = {};
+    const fromTypes = Object.keys(digraph);
+    for (let i = 0; i < fromTypes.length; i++) {
+      const fromType = fromTypes[i];
+      const toTypes = digraph[fromType];
+      for (let j = 0; j < toTypes.length; j++) {
+        const toType = toTypes[j];
+        inverted[toType] = (inverted[toType] || {});
+        inverted[toType][fromType] = true;
+      }
+    }
+    return mapObject(inverted, (types) => Object.keys(types));
+  }
+
   static describe(description, fn) {
     const {type} = description;
     fn.type = type;
@@ -22,12 +44,32 @@ export class Context {
 
   static globals() {
     return invokeHookFlat('behaviorContextGlobals')
-      .reduce((r, globals) => ({...r, ...globals}), {});
+      .reduce((r, results) => ({...r, ...results}), {});
+  }
+
+  static typeDigraph(type, marked = {}) {
+    const types = this.types();
+    if (marked[type] || !types[type]) {
+      marked[type] = true;
+      return [];
+    }
+    const description = this.typeDescription(type, undefined);
+    const subtypes = Object.keys(
+      Object.values(description)
+        .reduce((r, spec) => ({...r, [spec.type]: true}), {})
+    );
+    subtypes.forEach((type) => marked[type] = true);
+    return arrayUnique(
+      flatten(
+        subtypes.map(
+          (type) => this.typeDigraph(type, marked),
+        ),
+      ).concat(subtypes),
+    );
   }
 
   static typeDescription(type, variable) {
-    const types = invokeHookFlat('behaviorContextTypes')
-      .reduce((r, globals) => ({...r, ...globals}), {});
+    const types = this.types();
     if (!types[type]) {
       return {};
     }
@@ -37,9 +79,14 @@ export class Context {
     return types[type];
   }
 
+  static types() {
+    return invokeHookFlat('behaviorContextTypes')
+      .reduce((r, results) => ({...r, ...results}), {});
+  }
+
   add(key, value, type) {
     this.typeMap.set(key, type);
-    this.variableMap.set(key, value, type);
+    this.variableMap.set(key, value);
   }
 
   addObjectMap(map) {