removed lzz

src/util/custom-function.cpp

@@ -0,0 +1,59 @@
+class CustomFunction : protected DataConverter {
+public:
+
+	explicit CustomFunction(
+		v8::Isolate* isolate,
+		Database* db,
+		const char* name,
+		v8::Local<v8::Function> fn,
+		bool safe_ints
+	) :
+		name(name),
+		db(db),
+		isolate(isolate),
+		fn(isolate, fn),
+		safe_ints(safe_ints) {}
+
+	virtual ~CustomFunction() {}
+
+	static void xDestroy(void* self) {
+		delete static_cast<CustomFunction*>(self);
+	}
+
+	static void xFunc(sqlite3_context* invocation, int argc, sqlite3_value** argv) {
+		FUNCTION_START();
+
+		v8::Local<v8::Value> args_fast[4];
+		v8::Local<v8::Value>* args = NULL;
+		if (argc != 0) {
+			args = argc <= 4 ? args_fast : ALLOC_ARRAY<v8::Local<v8::Value>>(argc);
+			Data::GetArgumentsJS(isolate, args, argv, argc, self->safe_ints);
+		}
+
+		v8::MaybeLocal<v8::Value> maybeReturnValue = self->fn.Get(isolate)->Call(OnlyContext, v8::Undefined(isolate), argc, args);
+		if (args != args_fast) delete[] args;
+
+		if (maybeReturnValue.IsEmpty()) self->PropagateJSError(invocation);
+		else Data::ResultValueFromJS(isolate, invocation, maybeReturnValue.ToLocalChecked(), self);
+	}
+
+protected:
+
+	void PropagateJSError(sqlite3_context* invocation) {
+		assert(db->GetState()->was_js_error == false);
+		db->GetState()->was_js_error = true;
+		sqlite3_result_error(invocation, "", 0);
+	}
+
+	std::string GetDataErrorPrefix() {
+		return std::string("User-defined function ") + name + "() returned";
+	}
+
+private:
+	const std::string name;
+	Database* const db;
+protected:
+	v8::Isolate* const isolate;
+	const v8::Global<v8::Function> fn;
+	const bool safe_ints;
+};