fix(precedence): right-associative operators

glayzzle · May 10, 2020 · d0e5cd3 · d0e5cd3
1 parent 945333f
commit d0e5cd3
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Showing 2 changed files with 5 additions and 1 deletion.
diff --git a/src/ast.js b/src/ast.js
@@ -239,7 +239,8 @@ AST.prototype.resolvePrecedence = function (result, parser) {
           lLevel &&
           rLevel &&
           rLevel <= lLevel &&
-          !this.isRightAssociative(result.type)
+          (result.type !== result.right.type ||
+            !this.isRightAssociative(result.type))
         ) {
           // https://github.com/glayzzle/php-parser/issues/79
           // shift precedence

diff --git a/test/precedence.test.js b/test/precedence.test.js
@@ -89,6 +89,9 @@ describe("Test precedence", function () {
   it("test ?? right-associative", function () {
     shouldBeSame("1 ?? 2 ?? 3", "1 ?? (2 ?? 3)");
   });
+  it("test ** precedence", function () {
+    shouldBeSame("1 ** 2 + 3", "(1 ** 2) + 3");
+  });
   it("test ** right-associative", function () {
     shouldBeSame("1 ** 2 ** 3", "1 ** (2 ** 3)");
   });