insatnceof aliases prototypeof

quickjs.c

@@ -431,6 +431,9 @@ struct JSContext {
     JSValue global_obj; /* global object */
     JSValue global_var_obj; /* contains the global let/const definitions */
 
+    JSAtom doc_sym;
+    JSAtom typeof_sym;
+
     uint64_t random_state;
 
     /* when the counter reaches zero, JSRutime.interrupt_handler is called */
@@ -2079,6 +2082,14 @@ JSContext *JS_NewContextRaw(JSRuntime *rt)
     init_list_head(&ctx->loaded_modules);
 
     JS_AddIntrinsicBasicObjects(ctx);
+
+    JSValue dsym = JS_NewSymbol(ctx, "+documentation+", 0);
+    JSValue tsym = JS_NewSymbol(ctx, "+typeof+", 0);
+    ctx->doc_sym = JS_ValueToAtom(ctx,dsym);
+    ctx->typeof_sym = JS_ValueToAtom(ctx,tsym);
+    JS_FreeValue(ctx,dsym);
+    JS_FreeValue(ctx,tsym);
+
     return ctx;
 }
 
@@ -2950,7 +2961,7 @@ static JSAtom JS_NewAtomInt64(JSContext *ctx, int64_t n)
 }
 
 /* 'p' is freed */
-static JSValue JS_NewSymbol(JSContext *ctx, JSString *p, int atom_type)
+static JSValue JS_NewSymbolInternal(JSContext *ctx, JSString *p, int atom_type)
 {
     JSRuntime *rt = ctx->rt;
     JSAtom atom;
@@ -2971,7 +2982,7 @@ static JSValue JS_NewSymbolFromAtom(JSContext *ctx, JSAtom descr,
     assert(descr < rt->atom_size);
     p = rt->atom_array[descr];
     JS_DupValue(ctx, JS_MKPTR(JS_TAG_STRING, p));
-    return JS_NewSymbol(ctx, p, atom_type);
+    return JS_NewSymbolInternal(ctx, p, atom_type);
 }
 
 #define ATOM_GET_STR_BUF_SIZE 64
@@ -3023,6 +3034,15 @@ static const char *JS_AtomGetStrRT(JSRuntime *rt, char *buf, int buf_size,
     return buf;
 }
 
+/* `description` may be pure ASCII or UTF-8 encoded */
+JSValue JS_NewSymbol(JSContext *ctx, const char *description, int is_global)
+{
+    JSAtom atom = JS_NewAtom(ctx, description);
+    if (atom == JS_ATOM_NULL)
+        return JS_EXCEPTION;
+    return JS_NewSymbolFromAtom(ctx, atom, is_global ? JS_ATOM_TYPE_GLOBAL_SYMBOL : JS_ATOM_TYPE_SYMBOL);
+}
+
 static const char *JS_AtomGetStr(JSContext *ctx, char *buf, int buf_size, JSAtom atom)
 {
     return JS_AtomGetStrRT(ctx->rt, buf, buf_size, atom);
@@ -7498,13 +7518,20 @@ done:
     return ret;
 }
 
+static JSValue js_object_isPrototypeOf(JSContext *ctx, JSValueConst this_val, int argc, JSValueConst *argv);
+
 /* return TRUE, FALSE or (-1) in case of exception */
 int JS_IsInstanceOf(JSContext *ctx, JSValueConst val, JSValueConst obj)
 {
+  JSValue ret = js_object_isPrototypeOf(ctx, obj, 1, &val);
+  int b = JS_ToBool(ctx,ret);
+  JS_FreeValue(ctx,ret);
+    return b;
+/*
     JSValue method;
-
     if (!JS_IsObject(obj))
         goto fail;
+    if (!JS_
     method = JS_GetProperty(ctx, obj, JS_ATOM_Symbol_hasInstance);
     if (JS_IsException(method))
         return -1;
@@ -7514,13 +7541,13 @@ int JS_IsInstanceOf(JSContext *ctx, JSValueConst val, JSValueConst obj)
         return JS_ToBoolFree(ctx, ret);
     }
 
-    /* legacy case */
     if (!JS_IsFunction(ctx, obj)) {
     fail:
         JS_ThrowTypeError(ctx, "invalid 'instanceof' right operand");
         return -1;
     }
     return JS_OrdinaryIsInstanceOf(ctx, val, obj);
+*/
 }
 
 /* return the value associated to the autoinit property or an exception */
@@ -14804,6 +14831,12 @@ static __exception int js_has_unscopable(JSContext *ctx, JSValueConst obj,
     return ret;
 }
 
+static JSAtom js_atom_typeof(JSContext *js, JSValueConst o)
+{
+  JSObject *p = JS_VALUE_GET_OBJ(o);
+  return js->rt->class_array[p->class_id].class_name;
+}
+
 static __exception int js_operator_instanceof(JSContext *ctx, JSValue *sp)
 {
     JSValue op1, op2;
@@ -38495,8 +38528,7 @@ static JSValue js_object_set___proto__(JSContext *ctx, JSValueConst this_val,
         return JS_UNDEFINED;
 }
 
-static JSValue js_object_isPrototypeOf(JSContext *ctx, JSValueConst this_val,
-                                       int argc, JSValueConst *argv)
+static JSValue js_object_isPrototypeOf(JSContext *ctx, JSValueConst this_val, int argc, JSValueConst *argv)
 {
     JSValue obj, v1;
     JSValueConst v;
@@ -47173,7 +47205,7 @@ static JSValue js_symbol_constructor(JSContext *ctx, JSValueConst new_target,
             return JS_EXCEPTION;
         p = JS_VALUE_GET_STRING(str);
     }
-    return JS_NewSymbol(ctx, p, JS_ATOM_TYPE_SYMBOL);
+    return JS_NewSymbolInternal(ctx, p, JS_ATOM_TYPE_SYMBOL);
 }
 
 static JSValue js_thisSymbolValue(JSContext *ctx, JSValueConst this_val)
@@ -47245,7 +47277,7 @@ static JSValue js_symbol_for(JSContext *ctx, JSValueConst this_val,
     str = JS_ToString(ctx, argv[0]);
     if (JS_IsException(str))
         return JS_EXCEPTION;
-    return JS_NewSymbol(ctx, JS_VALUE_GET_STRING(str), JS_ATOM_TYPE_GLOBAL_SYMBOL);
+    return JS_NewSymbolInternal(ctx, JS_VALUE_GET_STRING(str), JS_ATOM_TYPE_GLOBAL_SYMBOL);
 }
 
 static JSValue js_symbol_keyFor(JSContext *ctx, JSValueConst this_val,

quickjs.h

@@ -462,6 +462,8 @@ void JS_MarkValue(JSRuntime *rt, JSValueConst val, JS_MarkFunc *mark_func);
 JSValue JS_RunGC(JSRuntime *rt, JSContext *ctx);
 JS_BOOL JS_IsLiveObject(JSRuntime *rt, JSValueConst obj);
 
+JSValue JS_NewSymbol(JSContext *ctx, const char *description, int is_global);
+
 JSContext *JS_NewContext(JSRuntime *rt);
 void JS_FreeContext(JSContext *s);
 JSContext *JS_DupContext(JSContext *ctx);