Auto-commit 2026-04-29 16:31

node_modules/@nodable/entities/src/entityTries.js

@@ -0,0 +1,49 @@
+// entityTries.js
+// Builds integer-keyed tries so the decoder never allocates a string object
+// during lookup — every key is a plain charCode number.
+//
+// trie1: Map<code0, entity>
+// trie2: Map<code0, Map<code1, entity>>
+// trie3: Map<code0, Map<code1, Map<code2, entity>>>
+
+import { ALL_ENTITIES } from './entities.js';
+
+// Reverse map: character sequence → "&name;"
+const CHAR_TO_ENTITY = new Map();
+for (const [name, chars] of Object.entries(ALL_ENTITIES)) {
+  CHAR_TO_ENTITY.set(chars, `&${name};`);
+}
+
+export const trie1 = new Map();   // code0          → entity string
+export const trie2 = new Map();   // code0 → Map    → entity string
+export const trie3 = new Map();   // code0 → Map → Map → entity string
+
+for (const [chars, entity] of CHAR_TO_ENTITY) {
+  const len = chars.length;
+
+  if (len === 1) {
+    const c0 = chars.charCodeAt(0);
+    // Keep shortest match only if no longer match already claimed this code
+    // (longer matches are inserted in the same pass so we just overwrite —
+    //  trie1 is only consulted after trie2/trie3 both miss, so no conflict)
+    trie1.set(c0, entity);
+
+  } else if (len === 2) {
+    const c0 = chars.charCodeAt(0);
+    const c1 = chars.charCodeAt(1);
+    let inner = trie2.get(c0);
+    if (inner === undefined) { inner = new Map(); trie2.set(c0, inner); }
+    inner.set(c1, entity);
+
+  } else if (len === 3) {
+    const c0 = chars.charCodeAt(0);
+    const c1 = chars.charCodeAt(1);
+    const c2 = chars.charCodeAt(2);
+    let mid = trie3.get(c0);
+    if (mid === undefined) { mid = new Map(); trie3.set(c0, mid); }
+    let inner = mid.get(c1);
+    if (inner === undefined) { inner = new Map(); mid.set(c1, inner); }
+    inner.set(c2, entity);
+  }
+  // HTML5 has no named entity whose character sequence is longer than 3 chars
+}