From d9d6939b20ae6e74399ed88433b3a121afdd642d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sa=C3=BAl=20Ibarra=20Corretg=C3=A9?= <s@saghul.net>
Date: Tue, 15 Oct 2024 11:46:45 +0200
Subject: [PATCH] Implement Promise.try

---
 quickjs.c    | 29 +++++++++++++++++++++++++++++
 test262.conf |  2 +-
 2 files changed, 30 insertions(+), 1 deletion(-)

diff --git a/quickjs.c b/quickjs.c
index 110e09d..7d80009 100644
--- a/quickjs.c
+++ b/quickjs.c
@@ -48018,6 +48018,34 @@ static JSValue js_promise_withResolvers(JSContext *ctx, JSValue this_val,
     return obj;
 }
 
+static JSValue js_promise_try(JSContext *ctx, JSValue this_val,
+                              int argc, JSValue *argv)
+{
+    JSValue result_promise, resolving_funcs[2], ret, ret2;
+    BOOL is_reject = 0;
+
+    if (!JS_IsObject(this_val))
+        return JS_ThrowTypeErrorNotAnObject(ctx);
+    result_promise = js_new_promise_capability(ctx, resolving_funcs, this_val);
+    if (JS_IsException(result_promise))
+        return result_promise;
+    ret = JS_Call(ctx, argv[0], JS_UNDEFINED, argc - 1, argv + 1);
+    if (JS_IsException(ret)) {
+        is_reject = 1;
+        ret = JS_GetException(ctx);
+    }
+    ret2 = JS_Call(ctx, resolving_funcs[is_reject], JS_UNDEFINED, 1, &ret);
+    JS_FreeValue(ctx, resolving_funcs[0]);
+    JS_FreeValue(ctx, resolving_funcs[1]);
+    JS_FreeValue(ctx, ret);
+    if (JS_IsException(ret2)) {
+        JS_FreeValue(ctx, result_promise);
+        return ret2;
+    }
+    JS_FreeValue(ctx, ret2);
+    return result_promise;
+}
+
 static __exception int remainingElementsCount_add(JSContext *ctx,
                                                   JSValue resolve_element_env,
                                                   int addend)
@@ -48505,6 +48533,7 @@ static const JSCFunctionListEntry js_promise_funcs[] = {
     JS_CFUNC_MAGIC_DEF("all", 1, js_promise_all, PROMISE_MAGIC_all ),
     JS_CFUNC_MAGIC_DEF("allSettled", 1, js_promise_all, PROMISE_MAGIC_allSettled ),
     JS_CFUNC_MAGIC_DEF("any", 1, js_promise_all, PROMISE_MAGIC_any ),
+    JS_CFUNC_DEF("try", 1, js_promise_try ),
     JS_CFUNC_DEF("race", 1, js_promise_race ),
     JS_CFUNC_DEF("withResolvers", 0, js_promise_withResolvers ),
     JS_CGETSET_DEF("[Symbol.species]", js_get_this, NULL),
diff --git a/test262.conf b/test262.conf
index 0ed1f59..5384a0b 100644
--- a/test262.conf
+++ b/test262.conf
@@ -153,7 +153,7 @@ Object.is
 optional-catch-binding
 optional-chaining
 Promise
-promise-try=skip
+promise-try
 promise-with-resolvers
 Promise.allSettled
 Promise.any