refactor(PreOrderCursorIterator): use generator delegation

Refs #691
swagger-api · Nov 29, 2021 · c16529a · c16529a
1 parent f672afd
commit c16529a
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Showing 3 changed files with 26 additions and 34 deletions.
diff --git a/packages/apidom-parser-adapter-json/src/syntactic-analysis/PreOrderCusrorIterator.ts b/packages/apidom-parser-adapter-json/src/syntactic-analysis/PreOrderCusrorIterator.ts
@@ -27,33 +27,20 @@ class PreOrderCursorIterator {
   }
 
   public *[Symbol.iterator]() {
-    let reachedRoot = false;
+    // @ts-ignore
+    const method = this[this.cursor.nodeType];
+    const constructor = this.constructor as any;
 
-    while (!reachedRoot) {
-      // @ts-ignore
-      const method = this[this.cursor.nodeType];
+    yield (method || this.createNode).call(this) as SyntaxNodeSurrogate;
 
-      yield (method || this.createNode).call(this) as SyntaxNodeSurrogate;
+    if (this.cursor.gotoFirstChild()) {
+      yield* new constructor(this.cursor);
 
-      if (this.cursor.gotoFirstChild()) {
-        continue; // eslint-disable-line no-continue
+      while (this.cursor.gotoNextSibling()) {
+        yield* new constructor(this.cursor);
       }
 
-      if (this.cursor.gotoNextSibling()) {
-        continue; // eslint-disable-line no-continue
-      }
-
-      let retracting = true;
-      while (retracting) {
-        if (!this.cursor.gotoParent()) {
-          retracting = false;
-          reachedRoot = true;
-        }
-
-        if (this.cursor.gotoNextSibling()) {
-          retracting = false;
-        }
-      }
+      this.cursor.gotoParent();
     }
   }
 }

diff --git a/...ages/apidom-parser-adapter-json/test/syntactic-analysis/PreOrderCursorChildrenIterator.ts b/...ages/apidom-parser-adapter-json/test/syntactic-analysis/PreOrderCursorChildrenIterator.ts
@@ -3,7 +3,6 @@ import { sexprs } from '@swagger-api/apidom-core';
 
 import { lexicalAnalysis, syntacticAnalysisDirect } from '../../src/adapter-node';
 import PreOrderCursorChildrenIterator from '../../src/syntactic-analysis/PreOrderCursorChildrenIterator';
-import PreOrderCursorIterator from '../../src/syntactic-analysis/PreOrderCusrorIterator';
 
 describe('syntactic-analysis', function () {
   context('PreOrderCursorChildrenIterator', function () {
@@ -17,15 +16,4 @@ describe('syntactic-analysis', function () {
       expect(sexprs(apiDOM)).toMatchSnapshot();
     });
   });
-
-  context('PreOrderCursorIterator', function () {
-    specify('should create optimized list of surrogate syntax nodes', async function () {
-      const cst = await lexicalAnalysis('[1, 2]');
-      const cursor = cst.walk();
-      const iterator = new PreOrderCursorIterator(cursor);
-      const optimizedList = [...iterator];
-
-      expect(optimizedList).to.have.lengthOf(7);
-    });
-  });
 });
diff --git a/packages/apidom-parser-adapter-json/test/syntactic-analysis/PreOrderCursorIterator.ts b/packages/apidom-parser-adapter-json/test/syntactic-analysis/PreOrderCursorIterator.ts
@@ -0,0 +1,17 @@
+import { assert } from 'chai';
+
+import { lexicalAnalysis } from '../../src/adapter-node';
+import PreOrderCursorIterator from '../../src/syntactic-analysis/PreOrderCusrorIterator';
+
+describe('syntactic-analysis', function () {
+  context('PreOrderCursorIterator', function () {
+    specify('should create optimized list of surrogate syntax nodes', async function () {
+      const cst = await lexicalAnalysis('{"a":"b"}');
+      const cursor = cst.walk();
+      const iterator = new PreOrderCursorIterator(cursor);
+      const optimizedList = [...iterator];
+
+      assert.lengthOf(optimizedList, 14);
+    });
+  });
+});