perf: reuse sh:in nodeSet

package.json

@@ -25,6 +25,7 @@
     "@rdfjs/dataset": "^2",
     "@rdfjs/environment": "^1",
     "@rdfjs/namespace": "^2.0.0",
+    "@rdfjs/term-map": "^2.0.1",
     "@rdfjs/term-set": "^2.0.1",
     "@vocabulary/sh": "^1.0.1",
     "clownface": "^2.0.0",
@@ -36,11 +37,11 @@
     "@changesets/cli": "^2.22.0",
     "@rdfjs/parser-n3": "^2.0.1",
     "@tpluscode/eslint-config": "^0.4.4",
+    "@zazuko/env-node": "^2",
     "c8": "^8.0.1",
     "get-stream": "^6.0.0",
     "mocha": "^10.2.0",
     "nanoid": "^4.0.2",
-    "@zazuko/env-node": "^2",
     "rdf-ext": "^2.5.1",
     "rdf-utils-dataset": "^2.0.0"
   },

src/validators.js

@@ -1,5 +1,6 @@
 import { validateTerm } from 'rdf-validate-datatype'
 import { fromRdf } from 'rdf-literal'
+import TermMap from '@rdfjs/term-map'
 import NodeSet from './node-set.js'
 import { getPathObjects } from './property-path.js'
 import { isInstanceOf, rdfListToArray } from './dataset-utils.js'
@@ -133,8 +134,16 @@ function validateHasValueProperty(context, focusNode, valueNode, constraint) {
 function validateIn(context, focusNode, valueNode, constraint) {
   const { sh } = context.ns
   const inNode = constraint.getParameterValue(sh.in)
+  if (!constraint.nodeSets) {
+    constraint.nodeSets = new TermMap()
+  }
+  let nodeSet = constraint.nodeSets.get(inNode)
+  if (!nodeSet) {
+    nodeSet = new NodeSet(rdfListToArray(context.$shapes.node(inNode)))
+    constraint.nodeSets.set(inNode, nodeSet)
+  }
 
-  return new NodeSet(rdfListToArray(context.$shapes.node(inNode))).has(valueNode)
+  return nodeSet.has(valueNode)
 }
 
 function validateLanguageIn(context, focusNode, valueNode, constraint) {