void JSEventDispatcher::EndSendEvent(Context* context, Object* sender, StringHash eventType, VariantMap& eventData)
{
    if (!jsEvents_.Contains(eventType))
        return;

    JSVM* vm = JSVM::GetJSVM(NULL);

    if (!vm)
        return;

    duk_context* ctx = vm->GetJSContext();

    duk_push_global_stash(ctx);
    duk_get_prop_index(ctx, -1, JS_GLOBALSTASH_VARIANTMAP_CACHE);

    duk_push_pointer(ctx, (void*) &eventData);
    duk_get_prop(ctx, -2);


    // If this issue is addressed, revisit this to simply remove
    // the variantmap object from the cache, if the user explicitly
    // keeps the event object alive in a local closure, that is allowed
    // (though, will keep object properties from being GC'd)
    // https://github.com/svaarala/duktape/issues/229

    // Ok, this is unfortunate, in an event callback it is possible
    // to capture the Proxy object which represents the event VariantMap
    // in a function() {} closure, which will keep the event data alive
    // until the function happens to be gc'd (it is a member of the eventhandler)
    // which will leave things like scenes up if there was a P_SCENE event data
    // member, etc
    // So, we need to check if we have an object in the variant map cache
    // and thense call it's delete property method on the Proxy, which will clear
    // all the data (the proxy can still be alive as a captured local, though
    // the members won't be held
    // This all makes it that much more important that the pointer to eventData
    // is consistent across entire event, otherwise references may be held

    // see note above about: https://github.com/svaarala/duktape/issues/229

    if (duk_is_object(ctx, -1))
    {
        // deletes all properties, thus freeing references, even if
        // the variant map object is held onto by script (it will be invalid, post
        // event send)
        // see JSAPI.cpp variantmap_property_deleteproperty
        duk_del_prop_index(ctx, -1, 0);

        duk_push_pointer(ctx, (void*) &eventData);
        duk_push_undefined(ctx);

        // clear the variant map object from the cache
        duk_put_prop(ctx, -4);

    }

    duk_pop_3(ctx);

}
예제 #2
0
DUK_EXTERNAL duk_bool_t duk_get_prop_string(duk_context *ctx, duk_idx_t obj_index, const char *key) {
	DUK_ASSERT_CTX_VALID(ctx);
	DUK_ASSERT(key != NULL);

	obj_index = duk_require_normalize_index(ctx, obj_index);
	duk_push_string(ctx, key);
	return duk_get_prop(ctx, obj_index);
}
static duk_ret_t test_1(duk_context *ctx) {
	duk_eval_string(ctx, "new Date(123456)");
	duk_push_string(ctx, "\xffValue");
	duk_get_prop(ctx, -2);
	printf("Date._Value: %s\n", duk_safe_to_string(ctx, -1));
	printf("final top: %ld\n", (long) duk_get_top(ctx));
	return 0;
}
예제 #4
0
DUK_INTERNAL duk_bool_t duk_get_prop_stridx(duk_context *ctx, duk_idx_t obj_index, duk_small_int_t stridx) {
	duk_hthread *thr = (duk_hthread *) ctx;

	DUK_ASSERT_CTX_VALID(ctx);
	DUK_ASSERT_DISABLE(stridx >= 0);
	DUK_ASSERT(stridx < DUK_HEAP_NUM_STRINGS);

	obj_index = duk_require_normalize_index(ctx, obj_index);
	duk_push_hstring(ctx, DUK_HTHREAD_GET_STRING(thr, stridx));
	return duk_get_prop(ctx, obj_index);
}
예제 #5
0
/* duk_get_prop(), success cases */
static duk_ret_t test_getprop_a(duk_context *ctx, void *udata) {
	duk_ret_t rc;

	(void) udata;

	prep(ctx);

	duk_push_string(ctx, "foo");
	rc = duk_get_prop(ctx, 0);
	printf("obj.foo -> rc=%d, result='%s'\n", (int) rc, duk_to_string(ctx, -1));
	duk_pop(ctx);

	duk_push_string(ctx, "nonexistent");
	rc = duk_get_prop(ctx, 0);
	printf("obj.nonexistent -> rc=%d, result='%s'\n", (int) rc, duk_to_string(ctx, -1));
	duk_pop(ctx);

	duk_push_int(ctx, 123);
	rc = duk_get_prop(ctx, 0);
	printf("obj[123] -> rc=%d, result='%s'\n", (int) rc, duk_to_string(ctx, -1));
	duk_pop(ctx);

	duk_push_string(ctx, "nonexistent");
	rc = duk_get_prop(ctx, 1);
	printf("arr.nonexistent -> rc=%d, result='%s'\n", (int) rc, duk_to_string(ctx, -1));
	duk_pop(ctx);

	duk_push_int(ctx, 2);
	rc = duk_get_prop(ctx, 1);
	printf("arr[2] -> rc=%d, result='%s'\n", (int) rc, duk_to_string(ctx, -1));
	duk_pop(ctx);

	duk_push_string(ctx, "length");
	rc = duk_get_prop(ctx, 1);
	printf("arr.length -> rc=%d, result='%s'\n", (int) rc, duk_to_string(ctx, -1));
	duk_pop(ctx);

	duk_push_int(ctx, 5);
	rc = duk_get_prop(ctx, 2);
	printf("'test_string'[5] -> rc=%d, result='%s'\n", (int) rc, duk_to_string(ctx, -1));
	duk_pop(ctx);

	duk_push_string(ctx, "length");
	rc = duk_get_prop(ctx, 2);
	printf("'test_string'.length -> rc=%d, result='%s'\n", (int) rc, duk_to_string(ctx, -1));
	duk_pop(ctx);

	printf("final top: %ld\n", (long) duk_get_top(ctx));
	return 0;
}
예제 #6
0
/* duk_get_prop(), DUK_INVALID_INDEX */
static duk_ret_t test_1c(duk_context *ctx) {
	duk_ret_t rc;

	prep(ctx);

	duk_push_string(ctx, "foo");
	rc = duk_get_prop(ctx, DUK_INVALID_INDEX);
	printf("obj.foo -> rc=%d, result='%s'\n", (int) rc, duk_to_string(ctx, -1));
	duk_pop(ctx);

	printf("final top: %ld\n", (long) duk_get_top(ctx));
	return 0;
}
예제 #7
0
/* duk_get_prop(), invalid index */
int test_1b(duk_context *ctx) {
	int rc;

	prep(ctx);

	duk_push_string(ctx, "foo");
	rc = duk_get_prop(ctx, 234);
	printf("obj.foo -> rc=%d, result='%s'\n", rc, duk_to_string(ctx, -1));
	duk_pop(ctx);

	printf("final top: %d\n", duk_get_top(ctx));
	return 0;
}
예제 #8
0
/* duk_get_prop(), success cases */
int test_1a(duk_context *ctx) {
	int rc;

	prep(ctx);

	duk_push_string(ctx, "foo");
	rc = duk_get_prop(ctx, 0);
	printf("obj.foo -> rc=%d, result='%s'\n", rc, duk_to_string(ctx, -1));
	duk_pop(ctx);

	duk_push_string(ctx, "nonexistent");
	rc = duk_get_prop(ctx, 0);
	printf("obj.nonexistent -> rc=%d, result='%s'\n", rc, duk_to_string(ctx, -1));
	duk_pop(ctx);

	duk_push_int(ctx, 123);
	rc = duk_get_prop(ctx, 0);
	printf("obj[123] -> rc=%d, result='%s'\n", rc, duk_to_string(ctx, -1));
	duk_pop(ctx);

	duk_push_string(ctx, "nonexistent");
	rc = duk_get_prop(ctx, 1);
	printf("arr.nonexistent -> rc=%d, result='%s'\n", rc, duk_to_string(ctx, -1));
	duk_pop(ctx);

	duk_push_int(ctx, 2);
	rc = duk_get_prop(ctx, 1);
	printf("arr[2] -> rc=%d, result='%s'\n", rc, duk_to_string(ctx, -1));
	duk_pop(ctx);

	duk_push_string(ctx, "length");
	rc = duk_get_prop(ctx, 1);
	printf("arr.length -> rc=%d, result='%s'\n", rc, duk_to_string(ctx, -1));
	duk_pop(ctx);

	duk_push_int(ctx, 5);
	rc = duk_get_prop(ctx, 2);
	printf("'test_string'[5] -> rc=%d, result='%s'\n", rc, duk_to_string(ctx, -1));
	duk_pop(ctx);

	duk_push_string(ctx, "length");
	rc = duk_get_prop(ctx, 2);
	printf("'test_string'.length -> rc=%d, result='%s'\n", rc, duk_to_string(ctx, -1));
	duk_pop(ctx);

	printf("final top: %d\n", duk_get_top(ctx));
	return 0;
}
예제 #9
0
        duk_ret_t GlobalsGet( duk_context * ctx )
        {
            duk_dup( ctx, 1 );
            duk_get_prop( ctx, 0 );

            if( !duk_is_null_or_undefined( ctx, -1 ) )
            {
                return 1;
            }

            duk_pop( ctx );

            return BindingGet( ctx );
        }
예제 #10
0
/* duk_get_prop(), not object coercible */
static duk_ret_t test_1e(duk_context *ctx) {
	duk_ret_t rc;

	duk_set_top(ctx, 0);

	duk_push_null(ctx);
	duk_push_string(ctx, "foo");
	rc = duk_get_prop(ctx, -2);
	printf("null.foo -> rc=%d, result='%s'\n", (int) rc, duk_to_string(ctx, -1));
	duk_pop(ctx);

	printf("final top: %ld\n", (long) duk_get_top(ctx));
	return 0;
}
예제 #11
0
/* duk_get_prop(), invalid index */
static duk_ret_t test_getprop_b(duk_context *ctx, void *udata) {
	duk_ret_t rc;

	(void) udata;

	prep(ctx);

	duk_push_string(ctx, "foo");
	rc = duk_get_prop(ctx, 234);
	printf("obj.foo -> rc=%d, result='%s'\n", (int) rc, duk_to_string(ctx, -1));
	duk_pop(ctx);

	printf("final top: %ld\n", (long) duk_get_top(ctx));
	return 0;
}
예제 #12
0
/* duk_get_prop(), test in API doc (more or less) */
static duk_ret_t test_getprop_d(duk_context *ctx, void *udata) {
	int cfg_idx;

	(void) udata;

	prep(ctx);

	/* reading [global object].Math.PI */
	duk_push_global_object(ctx);    /* -> [ global ] */
	duk_push_string(ctx, "Math");   /* -> [ global "Math" ] */
	duk_get_prop(ctx, -2);          /* -> [ global Math ] */
	duk_push_string(ctx, "PI");     /* -> [ global Math "PI" ] */
	duk_get_prop(ctx, -2);          /* -> [ global Math PI ] */
	printf("Math.PI is %lf\n", duk_get_number(ctx, -1));
	duk_pop_n(ctx, 3);

	/* fake config object */
	cfg_idx = duk_get_top(ctx);
	duk_push_string(ctx, "{\"mySetting\": \"setting value\"}");
	duk_json_decode(ctx, cfg_idx);

	/* reading a configuration value, cfg_idx is normalized
	 * index of a configuration object.
	 */
	duk_push_string(ctx, "mySetting");
	if (duk_get_prop(ctx, cfg_idx)) {
	    const char *str_value = duk_to_string(ctx, -1);
	    printf("configuration setting present, value: %s\n", str_value);
	} else {
	    printf("configuration setting missing\n");
	}
	duk_pop(ctx);  /* remember to pop, regardless of whether or not present */

	printf("final top: %ld\n", (long) duk_get_top(ctx));
	return 0;
}
예제 #13
0
static void ctx_get_one_prop(struct state *state, VALUE name, int strict)
{
  duk_context *ctx = state->ctx;

  // Don't allow prop access on undefined/null
  if (duk_check_type_mask(ctx, -1, DUK_TYPE_MASK_UNDEFINED | DUK_TYPE_MASK_NULL)) {
    clean_raise(ctx, eTypeError, "invalid base value");
  }

  duk_push_lstring(ctx, RSTRING_PTR(name), RSTRING_LEN(name));
  duk_bool_t exists = duk_get_prop(ctx, -2);

  if (!exists && strict) {
    const char *str = StringValueCStr(name);
    clean_raise(ctx, eReferenceError, "identifier '%s' undefined", str);
  }
}
예제 #14
0
static duk_ret_t handle_get(duk_context *ctx) {
	/* 'this' binding: handler
	 * [0]: target
	 * [1]: key
	 * [2]: receiver (proxy)
	 */

	const char *key = duk_to_string(ctx, 1);

	printf("handle_get: key=%s\n", key);

	if (key != NULL && key[0] == '_') {
		/* Provide a fake value for properties beginning with an underscore. */
		duk_push_string(ctx, "fake_value");
	} else {
		/* For others, read from target. */
		duk_dup(ctx, 1);
		duk_get_prop(ctx, 0);
	}
	return 1;
}
예제 #15
0
static duk_ret_t
js_ByteArray_getProp(duk_context* ctx)
{
	bytearray_t* array;
	int          index;
	int          size;

	duk_get_prop_string(ctx, 0, "\xFF" "ptr"); array = duk_get_pointer(ctx, -1); duk_pop(ctx);
	if (duk_is_number(ctx, 1)) {
		index = duk_to_int(ctx, 1);
		size = get_bytearray_size(array);
		if (index < 0 || index >= size)
			duk_error_ni(ctx, -1, DUK_ERR_RANGE_ERROR, "ByteArray[]: Index is out of bounds (%i - size: %i)", index, size);
		duk_push_uint(ctx, get_byte(array, index));
		return 1;
	}
	else {
		duk_dup(ctx, 1);
		duk_get_prop(ctx, 0);
		return 1;
	}
}
예제 #16
0
static duk_ret_t Component_GetProperty(duk_context* ctx)
{
    /* 'this' binding: handler
     * [0]: target
     * [1]: key
     * [2]: receiver (proxy)
     */
    const char* attrName = duk_to_string(ctx, 1);
    if (attrName && attrName[0] >= 'a' && attrName[0] <= 'z')
    {
        IComponent* comp = GetWeakObject<IComponent>(ctx, 0);
        if (comp)
        {
            IAttribute* attr = comp->AttributeById(String(attrName));
            PushAttributeValue(ctx, attr);
            return 1;
        }
    }

    // Fallthrough to ordinary properties
    duk_dup(ctx, 1);
    duk_get_prop(ctx, 0);
    return 1;
}
static duk_ret_t duk__require(duk_context *ctx) {
	const char *str_req_id;  /* requested identifier */
	const char *str_mod_id;  /* require.id of current module */
	duk_int_t pcall_rc;

	/* NOTE: we try to minimize code size by avoiding unnecessary pops,
	 * so the stack looks a bit cluttered in this function.  DUK__ASSERT_TOP()
	 * assertions are used to ensure stack configuration is correct at each
	 * step.
	 */

	/*
	 *  Resolve module identifier into canonical absolute form.
	 */

	str_req_id = duk_require_string(ctx, DUK__IDX_REQUESTED_ID);
	duk_push_current_function(ctx);
	duk_get_prop_string(ctx, -1, "id");
	str_mod_id = duk_get_string(ctx, DUK__IDX_REQUIRE_ID);  /* ignore non-strings */
	duk__resolve_module_id(ctx, str_req_id, str_mod_id);
	str_req_id = NULL;
	str_mod_id = NULL;

	/* [ requested_id require require.id resolved_id last_comp ] */
	DUK__ASSERT_TOP(ctx, DUK__IDX_LASTCOMP + 1);

	/*
	 *  Cached module check.
	 *
	 *  If module has been loaded or its loading has already begun without
	 *  finishing, return the same cached value (module.exports).  The
	 *  value is registered when module load starts so that circular
	 *  references can be supported to some extent.
	 */

	duk_push_global_stash(ctx);
	duk_get_prop_string(ctx, -1, "\xff" "module:Duktape");
	duk_remove(ctx, -2);  /* Lookup stashed, original 'Duktape' object. */
	duk_get_prop_string(ctx, DUK__IDX_DUKTAPE, "modLoaded");  /* Duktape.modLoaded */
	duk_require_type_mask(ctx, DUK__IDX_MODLOADED, DUK_TYPE_MASK_OBJECT);
	DUK__ASSERT_TOP(ctx, DUK__IDX_MODLOADED + 1);

	duk_dup(ctx, DUK__IDX_RESOLVED_ID);
	if (duk_get_prop(ctx, DUK__IDX_MODLOADED)) {
		/* [ requested_id require require.id resolved_id last_comp Duktape Duktape.modLoaded Duktape.modLoaded[id] ] */
		duk_get_prop_string(ctx, -1, "exports");  /* return module.exports */
		return 1;
	}
	DUK__ASSERT_TOP(ctx, DUK__IDX_UNDEFINED + 1);

	/* [ requested_id require require.id resolved_id last_comp Duktape Duktape.modLoaded undefined ] */

	/*
	 *  Module not loaded (and loading not started previously).
	 *
	 *  Create a new require() function with 'id' set to resolved ID
	 *  of module being loaded.  Also create 'exports' and 'module'
	 *  tables but don't register exports to the loaded table yet.
	 *  We don't want to do that unless the user module search callbacks
	 *  succeeds in finding the module.
	 */

	/* Fresh require: require.id is left configurable (but not writable)
	 * so that is not easy to accidentally tweak it, but it can still be
	 * done with Object.defineProperty().
	 *
	 * XXX: require.id could also be just made non-configurable, as there
	 * is no practical reason to touch it (at least from Ecmascript code).
	 */
	duk_push_c_function(ctx, duk__require, 1 /*nargs*/);
	duk_push_string(ctx, "name");
	duk_push_string(ctx, "require");
	duk_def_prop(ctx, DUK__IDX_FRESH_REQUIRE, DUK_DEFPROP_HAVE_VALUE);  /* not writable, not enumerable, not configurable */
	duk_push_string(ctx, "id");
	duk_dup(ctx, DUK__IDX_RESOLVED_ID);
	duk_def_prop(ctx, DUK__IDX_FRESH_REQUIRE, DUK_DEFPROP_HAVE_VALUE | DUK_DEFPROP_SET_CONFIGURABLE);  /* a fresh require() with require.id = resolved target module id */

	/* Module table:
	 * - module.exports: initial exports table (may be replaced by user)
	 * - module.id is non-writable and non-configurable, as the CommonJS
	 *   spec suggests this if possible
	 * - module.filename: not set, defaults to resolved ID if not explicitly
	 *   set by modSearch() (note capitalization, not .fileName, matches Node.js)
	 * - module.name: not set, defaults to last component of resolved ID if
	 *   not explicitly set by modSearch()
	 */
	duk_push_object(ctx);  /* exports */
	duk_push_object(ctx);  /* module */
	duk_push_string(ctx, "exports");
	duk_dup(ctx, DUK__IDX_EXPORTS);
	duk_def_prop(ctx, DUK__IDX_MODULE, DUK_DEFPROP_HAVE_VALUE | DUK_DEFPROP_SET_WRITABLE | DUK_DEFPROP_SET_CONFIGURABLE);  /* module.exports = exports */
	duk_push_string(ctx, "id");
	duk_dup(ctx, DUK__IDX_RESOLVED_ID);  /* resolved id: require(id) must return this same module */
	duk_def_prop(ctx, DUK__IDX_MODULE, DUK_DEFPROP_HAVE_VALUE);  /* module.id = resolved_id; not writable, not enumerable, not configurable */
	duk_compact(ctx, DUK__IDX_MODULE);  /* module table remains registered to modLoaded, minimize its size */
	DUK__ASSERT_TOP(ctx, DUK__IDX_MODULE + 1);

	/* [ requested_id require require.id resolved_id last_comp Duktape Duktape.modLoaded undefined fresh_require exports module ] */

	/* Register the module table early to modLoaded[] so that we can
	 * support circular references even in modSearch().  If an error
	 * is thrown, we'll delete the reference.
	 */
	duk_dup(ctx, DUK__IDX_RESOLVED_ID);
	duk_dup(ctx, DUK__IDX_MODULE);
	duk_put_prop(ctx, DUK__IDX_MODLOADED);  /* Duktape.modLoaded[resolved_id] = module */

	/*
	 *  Call user provided module search function and build the wrapped
	 *  module source code (if necessary).  The module search function
	 *  can be used to implement pure Ecmacsript, pure C, and mixed
	 *  Ecmascript/C modules.
	 *
	 *  The module search function can operate on the exports table directly
	 *  (e.g. DLL code can register values to it).  It can also return a
	 *  string which is interpreted as module source code (if a non-string
	 *  is returned the module is assumed to be a pure C one).  If a module
	 *  cannot be found, an error must be thrown by the user callback.
	 *
	 *  Because Duktape.modLoaded[] already contains the module being
	 *  loaded, circular references for C modules should also work
	 *  (although expected to be quite rare).
	 */

	duk_push_string(ctx, "(function(require,exports,module){");

	/* Duktape.modSearch(resolved_id, fresh_require, exports, module). */
	duk_get_prop_string(ctx, DUK__IDX_DUKTAPE, "modSearch");  /* Duktape.modSearch */
	duk_dup(ctx, DUK__IDX_RESOLVED_ID);
	duk_dup(ctx, DUK__IDX_FRESH_REQUIRE);
	duk_dup(ctx, DUK__IDX_EXPORTS);
	duk_dup(ctx, DUK__IDX_MODULE);  /* [ ... Duktape.modSearch resolved_id last_comp fresh_require exports module ] */
	pcall_rc = duk_pcall(ctx, 4 /*nargs*/);  /* -> [ ... source ] */
	DUK__ASSERT_TOP(ctx, DUK__IDX_MODULE + 3);

	if (pcall_rc != DUK_EXEC_SUCCESS) {
		/* Delete entry in Duktape.modLoaded[] and rethrow. */
		goto delete_rethrow;
	}

	/* If user callback did not return source code, module loading
	 * is finished (user callback initialized exports table directly).
	 */
	if (!duk_is_string(ctx, -1)) {
		/* User callback did not return source code, so module loading
		 * is finished: just update modLoaded with final module.exports
		 * and we're done.
		 */
		goto return_exports;
	}

	/* Finish the wrapped module source.  Force module.filename as the
	 * function .fileName so it gets set for functions defined within a
	 * module.  This also ensures loggers created within the module get
	 * the module ID (or overridden filename) as their default logger name.
	 * (Note capitalization: .filename matches Node.js while .fileName is
	 * used elsewhere in Duktape.)
	 */
	duk_push_string(ctx, "})");
	duk_concat(ctx, 3);
	if (!duk_get_prop_string(ctx, DUK__IDX_MODULE, "filename")) {
		/* module.filename for .fileName, default to resolved ID if
		 * not present.
		 */
		duk_pop(ctx);
		duk_dup(ctx, DUK__IDX_RESOLVED_ID);
	}
	pcall_rc = duk_pcompile(ctx, DUK_COMPILE_EVAL);
	if (pcall_rc != DUK_EXEC_SUCCESS) {
		goto delete_rethrow;
	}
	pcall_rc = duk_pcall(ctx, 0);  /* -> eval'd function wrapper (not called yet) */
	if (pcall_rc != DUK_EXEC_SUCCESS) {
		goto delete_rethrow;
	}

	/* Module has now evaluated to a wrapped module function.  Force its
	 * .name to match module.name (defaults to last component of resolved
	 * ID) so that it is shown in stack traces too.  Note that we must not
	 * introduce an actual name binding into the function scope (which is
	 * usually the case with a named function) because it would affect the
	 * scope seen by the module and shadow accesses to globals of the same name.
	 * This is now done by compiling the function as anonymous and then forcing
	 * its .name without setting a "has name binding" flag.
	 */

	duk_push_string(ctx, "name");
	if (!duk_get_prop_string(ctx, DUK__IDX_MODULE, "name")) {
		/* module.name for .name, default to last component if
		 * not present.
		 */
		duk_pop(ctx);
		duk_dup(ctx, DUK__IDX_LASTCOMP);
	}
	duk_def_prop(ctx, -3, DUK_DEFPROP_HAVE_VALUE | DUK_DEFPROP_FORCE);

	/*
	 *  Call the wrapped module function.
	 *
	 *  Use a protected call so that we can update Duktape.modLoaded[resolved_id]
	 *  even if the module throws an error.
	 */

	/* [ requested_id require require.id resolved_id last_comp Duktape Duktape.modLoaded undefined fresh_require exports module mod_func ] */
	DUK__ASSERT_TOP(ctx, DUK__IDX_MODULE + 2);

	duk_dup(ctx, DUK__IDX_EXPORTS);  /* exports (this binding) */
	duk_dup(ctx, DUK__IDX_FRESH_REQUIRE);  /* fresh require (argument) */
	duk_get_prop_string(ctx, DUK__IDX_MODULE, "exports");  /* relookup exports from module.exports in case it was changed by modSearch */
	duk_dup(ctx, DUK__IDX_MODULE);  /* module (argument) */
	DUK__ASSERT_TOP(ctx, DUK__IDX_MODULE + 6);

	/* [ requested_id require require.id resolved_id last_comp Duktape Duktape.modLoaded undefined fresh_require exports module mod_func exports fresh_require exports module ] */

	pcall_rc = duk_pcall_method(ctx, 3 /*nargs*/);
	if (pcall_rc != DUK_EXEC_SUCCESS) {
		/* Module loading failed.  Node.js will forget the module
		 * registration so that another require() will try to load
		 * the module again.  Mimic that behavior.
		 */
		goto delete_rethrow;
	}

	/* [ requested_id require require.id resolved_id last_comp Duktape Duktape.modLoaded undefined fresh_require exports module result(ignored) ] */
	DUK__ASSERT_TOP(ctx, DUK__IDX_MODULE + 2);

	/* fall through */

 return_exports:
	duk_get_prop_string(ctx, DUK__IDX_MODULE, "exports");
	duk_compact(ctx, -1);  /* compact the exports table */
	return 1;  /* return module.exports */

 delete_rethrow:
	duk_dup(ctx, DUK__IDX_RESOLVED_ID);
	duk_del_prop(ctx, DUK__IDX_MODLOADED);  /* delete Duktape.modLoaded[resolved_id] */
	duk_throw(ctx);  /* rethrow original error */
	return 0;  /* not reachable */
}
예제 #18
0
//duk_bool_t duk_get_prop(duk_context *ctx, duk_idx_t obj_index);
duk_bool_t aperl_duk_get_prop(duk_context *ctx, duk_idx_t obj_index) {
	duk_bool_t ret = duk_get_prop(ctx, obj_index);
	return ret;
}
예제 #19
0
static duk_ret_t test_func(duk_context *ctx, void *udata) {
	(void) udata;

	if (ctx) {
		printf("dummy - return here\n"); fflush(stdout);
		return 0;
	}

	/* Up-to-date for Duktape 1.3.0, alphabetical order:
	 * $ cd website/api; ls *.yaml
	 */

	(void) duk_alloc_raw(ctx, 0);
	(void) duk_alloc(ctx, 0);
	(void) duk_base64_decode(ctx, 0);
	(void) duk_base64_encode(ctx, 0);
	(void) duk_buffer_to_string(ctx, 0);
	(void) duk_call_method(ctx, 0);
	(void) duk_call_prop(ctx, 0, 0);
	(void) duk_call(ctx, 0);
	(void) duk_char_code_at(ctx, 0, 0);
	(void) duk_check_stack_top(ctx, 0);
	(void) duk_check_stack(ctx, 0);
	(void) duk_check_type_mask(ctx, 0, 0);
	(void) duk_check_type(ctx, 0, 0);
	(void) duk_compact(ctx, 0);
	(void) duk_compile_lstring_filename(ctx, 0, "dummy", 0);
	(void) duk_compile_lstring(ctx, 0, "dummy", 0);
	(void) duk_compile_string_filename(ctx, 0, "dummy");
	(void) duk_compile_string(ctx, 0, "dummy");
	(void) duk_compile(ctx, 0);
	(void) duk_concat(ctx, 0);
	(void) duk_config_buffer(ctx, 0, NULL, 0);
	(void) duk_copy(ctx, 0, 0);
	(void) duk_create_heap_default();
	(void) duk_create_heap(NULL, NULL, NULL, NULL, NULL);
	(void) duk_debugger_attach(ctx, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL);
	(void) duk_debugger_cooperate(ctx);
	(void) duk_debugger_detach(ctx);
	(void) duk_debugger_notify(ctx, 0);
	(void) duk_debugger_pause(ctx);
	(void) duk_decode_string(ctx, 0, NULL, NULL);
	(void) duk_def_prop(ctx, 0, 0);
	(void) duk_del_prop_index(ctx, 0, 0);
	(void) duk_del_prop_string(ctx, 0, "dummy");
	(void) duk_del_prop(ctx, 0);
	(void) duk_destroy_heap(ctx);
	(void) duk_dump_function(ctx);
	(void) duk_dup_top(ctx);
	(void) duk_dup(ctx, 0);
	(void) duk_enum(ctx, 0, 0);
	(void) duk_equals(ctx, 0, 0);
	duk_error_va(ctx, 0, NULL, NULL);
	duk_error(ctx, 0, "dummy");  /* (void) cast won't work without variadic macros */
	(void) duk_eval_lstring_noresult(ctx, "dummy", 0);
	(void) duk_eval_lstring(ctx, "dummy", 0);
	(void) duk_eval_noresult(ctx);
	(void) duk_eval_string_noresult(ctx, "dummy");
	(void) duk_eval_string(ctx, "dummy");
	(void) duk_eval(ctx);
	(void) duk_fatal(ctx, "dummy");
	(void) duk_free_raw(ctx, NULL);
	(void) duk_free(ctx, NULL);
	(void) duk_gc(ctx, 0);
	(void) duk_get_boolean(ctx, 0);
	(void) duk_get_buffer_data(ctx, 0, NULL);
	(void) duk_get_buffer(ctx, 0, NULL);
	(void) duk_get_c_function(ctx, 0);
	(void) duk_get_context(ctx, 0);
	(void) duk_get_current_magic(ctx);
	(void) duk_get_error_code(ctx, 0);
	(void) duk_get_finalizer(ctx, 0);
	(void) duk_get_global_string(ctx, 0);
	(void) duk_get_heapptr(ctx, 0);
	(void) duk_get_int(ctx, 0);
	(void) duk_get_length(ctx, 0);
	(void) duk_get_lstring(ctx, 0, NULL);
	(void) duk_get_magic(ctx, 0);
	(void) duk_get_memory_functions(ctx, NULL);
	(void) duk_get_number(ctx, 0);
	(void) duk_get_pointer(ctx, 0);
	(void) duk_get_prop_index(ctx, 0, 0);
	(void) duk_get_prop_string(ctx, 0, "dummy");
	(void) duk_get_prop(ctx, 0);
	(void) duk_get_prototype(ctx, 0);
	(void) duk_get_string(ctx, 0);
	(void) duk_get_top_index(ctx);
	(void) duk_get_top(ctx);
	(void) duk_get_type_mask(ctx, 0);
	(void) duk_get_type(ctx, 0);
	(void) duk_get_uint(ctx, 0);
	(void) duk_has_prop_index(ctx, 0, 0);
	(void) duk_has_prop_string(ctx, 0, "dummy");
	(void) duk_has_prop(ctx, 0);
	(void) duk_hex_decode(ctx, 0);
	(void) duk_hex_encode(ctx, 0);
	(void) duk_insert(ctx, 0);
	(void) duk_instanceof(ctx, 0, 0);
	(void) duk_is_array(ctx, 0);
	(void) duk_is_boolean(ctx, 0);
	(void) duk_is_bound_function(ctx, 0);
	(void) duk_is_buffer(ctx, 0);
	(void) duk_is_callable(ctx, 0);
	(void) duk_is_c_function(ctx, 0);
	(void) duk_is_constructor_call(ctx);
	(void) duk_is_dynamic_buffer(ctx, 0);
	(void) duk_is_ecmascript_function(ctx, 0);
	(void) duk_is_error(ctx, 0);
	(void) duk_is_eval_error(ctx, 0);
	(void) duk_is_fixed_buffer(ctx, 0);
	(void) duk_is_function(ctx, 0);
	(void) duk_is_lightfunc(ctx, 0);
	(void) duk_is_nan(ctx, 0);
	(void) duk_is_null_or_undefined(ctx, 0);
	(void) duk_is_null(ctx, 0);
	(void) duk_is_number(ctx, 0);
	(void) duk_is_object_coercible(ctx, 0);
	(void) duk_is_object(ctx, 0);
	(void) duk_is_pointer(ctx, 0);
	(void) duk_is_primitive(ctx, 0);
	(void) duk_is_range_error(ctx, 0);
	(void) duk_is_reference_error(ctx, 0);
	(void) duk_is_strict_call(ctx);
	(void) duk_is_string(ctx, 0);
	(void) duk_is_syntax_error(ctx, 0);
	(void) duk_is_thread(ctx, 0);
	(void) duk_is_type_error(ctx, 0);
	(void) duk_is_undefined(ctx, 0);
	(void) duk_is_uri_error(ctx, 0);
	(void) duk_is_valid_index(ctx, 0);
	(void) duk_join(ctx, 0);
	(void) duk_json_decode(ctx, 0);
	(void) duk_json_encode(ctx, 0);
	(void) duk_load_function(ctx);
	(void) duk_map_string(ctx, 0, NULL, NULL);
	(void) duk_new(ctx, 0);
	(void) duk_next(ctx, 0, 0);
	(void) duk_normalize_index(ctx, 0);
	(void) duk_pcall_method(ctx, 0);
	(void) duk_pcall_prop(ctx, 0, 0);
	(void) duk_pcall(ctx, 0);
	(void) duk_pcompile_lstring_filename(ctx, 0, "dummy", 0);
	(void) duk_pcompile_lstring(ctx, 0, "dummy", 0);
	(void) duk_pcompile_string_filename(ctx, 0, "dummy");
	(void) duk_pcompile_string(ctx, 0, "dummy");
	(void) duk_pcompile(ctx, 0);
	(void) duk_peval_lstring_noresult(ctx, "dummy", 0);
	(void) duk_peval_lstring(ctx, "dummy", 0);
	(void) duk_peval_noresult(ctx);
	(void) duk_peval_string_noresult(ctx, "dummy");
	(void) duk_peval_string(ctx, "dummy");
	(void) duk_peval(ctx);
	(void) duk_pnew(ctx, 0);
	(void) duk_pop_2(ctx);
	(void) duk_pop_3(ctx);
	(void) duk_pop_n(ctx, 0);
	(void) duk_pop(ctx);
	(void) duk_push_array(ctx);
	(void) duk_push_boolean(ctx, 0);
	(void) duk_push_buffer_object(ctx, 0, 0, 0, 0);
	(void) duk_push_buffer(ctx, 0, 0);
	(void) duk_push_c_function(ctx, NULL, 0);
	(void) duk_push_c_lightfunc(ctx, NULL, 0, 0, 0);
	(void) duk_push_context_dump(ctx);
	(void) duk_push_current_function(ctx);
	(void) duk_push_current_thread(ctx);
	(void) duk_push_dynamic_buffer(ctx, 0);
	(void) duk_push_error_object_va(ctx, 0, NULL, NULL);
	(void) duk_push_error_object(ctx, 0, "dummy");
	(void) duk_push_external_buffer(ctx);
	(void) duk_push_false(ctx);
	(void) duk_push_fixed_buffer(ctx, 0);
	(void) duk_push_global_object(ctx);
	(void) duk_push_global_stash(ctx);
	(void) duk_push_heap_stash(ctx);
	(void) duk_push_heapptr(ctx, NULL);
	(void) duk_push_int(ctx, 0);
	(void) duk_push_lstring(ctx, "dummy", 0);
	(void) duk_push_nan(ctx);
	(void) duk_push_null(ctx);
	(void) duk_push_number(ctx, 0.0);
	(void) duk_push_object(ctx);
	(void) duk_push_pointer(ctx, NULL);
	(void) duk_push_sprintf(ctx, "dummy");
	(void) duk_push_string(ctx, "dummy");
	(void) duk_push_this(ctx);
	(void) duk_push_thread_new_globalenv(ctx);
	(void) duk_push_thread_stash(ctx, NULL);
	(void) duk_push_thread(ctx);
	(void) duk_push_true(ctx);
	(void) duk_push_uint(ctx, 0);
	(void) duk_push_undefined(ctx);
	(void) duk_push_vsprintf(ctx, "dummy", NULL);
	(void) duk_put_function_list(ctx, 0, NULL);
	(void) duk_put_global_string(ctx, NULL);
	(void) duk_put_number_list(ctx, 0, NULL);
	(void) duk_put_prop_index(ctx, 0, 0);
	(void) duk_put_prop_string(ctx, 0, "dummy");
	(void) duk_put_prop(ctx, 0);
	(void) duk_realloc_raw(ctx, NULL, 0);
	(void) duk_realloc(ctx, NULL, 0);
	(void) duk_remove(ctx, 0);
	(void) duk_replace(ctx, 0);
	(void) duk_require_boolean(ctx, 0);
	(void) duk_require_buffer_data(ctx, 0, NULL);
	(void) duk_require_buffer(ctx, 0, NULL);
	(void) duk_require_c_function(ctx, 0);
	(void) duk_require_callable(ctx, 0);
	(void) duk_require_context(ctx, 0);
	(void) duk_require_function(ctx, 0);
	(void) duk_require_heapptr(ctx, 0);
	(void) duk_require_int(ctx, 0);
	(void) duk_require_lstring(ctx, 0, NULL);
	(void) duk_require_normalize_index(ctx, 0);
	(void) duk_require_null(ctx, 0);
	(void) duk_require_number(ctx, 0);
	(void) duk_require_object_coercible(ctx, 0);
	(void) duk_require_pointer(ctx, 0);
	(void) duk_require_stack_top(ctx, 0);
	(void) duk_require_stack(ctx, 0);
	(void) duk_require_string(ctx, 0);
	(void) duk_require_top_index(ctx);
	(void) duk_require_type_mask(ctx, 0, 0);
	(void) duk_require_uint(ctx, 0);
	(void) duk_require_undefined(ctx, 0);
	(void) duk_require_valid_index(ctx, 0);
	(void) duk_resize_buffer(ctx, 0, 0);
	(void) duk_safe_call(ctx, NULL, NULL, 0, 0);
	(void) duk_safe_to_lstring(ctx, 0, NULL);
	(void) duk_safe_to_string(ctx, 0);
	(void) duk_set_finalizer(ctx, 0);
	(void) duk_set_global_object(ctx);
	(void) duk_set_magic(ctx, 0, 0);
	(void) duk_set_prototype(ctx, 0);
	(void) duk_set_top(ctx, 0);
	(void) duk_steal_buffer(ctx, 0, NULL);
	(void) duk_strict_equals(ctx, 0, 0);
	(void) duk_substring(ctx, 0, 0, 0);
	(void) duk_swap_top(ctx, 0);
	(void) duk_swap(ctx, 0, 0);
	(void) duk_throw(ctx);
	(void) duk_to_boolean(ctx, 0);
	(void) duk_to_buffer(ctx, 0, NULL);
	(void) duk_to_defaultvalue(ctx, 0, 0);
	(void) duk_to_dynamic_buffer(ctx, 0, NULL);
	(void) duk_to_fixed_buffer(ctx, 0, NULL);
	(void) duk_to_int32(ctx, 0);
	(void) duk_to_int(ctx, 0);
	(void) duk_to_lstring(ctx, 0, NULL);
	(void) duk_to_null(ctx, 0);
	(void) duk_to_number(ctx, 0);
	(void) duk_to_object(ctx, 0);
	(void) duk_to_pointer(ctx, 0);
	(void) duk_to_primitive(ctx, 0, 0);
	(void) duk_to_string(ctx, 0);
	(void) duk_to_uint16(ctx, 0);
	(void) duk_to_uint32(ctx, 0);
	(void) duk_to_uint(ctx, 0);
	(void) duk_to_undefined(ctx, 0);
	(void) duk_trim(ctx, 0);
	(void) duk_xcopy_top(ctx, NULL, 0);
	(void) duk_xmove_top(ctx, NULL, 0);

	printf("never here\n"); fflush(stdout);
	return 0;
}
void JSEventHelper::HandleEvent(StringHash eventType, VariantMap& eventData)
{
    if (object_.Null())
        return;

    JSVM* vm = JSVM::GetJSVM(0);
    duk_context* ctx = vm->GetJSContext();

    duk_idx_t top = duk_get_top(ctx);

    js_push_class_object_instance(ctx, this);

    duk_get_prop_string(ctx, -1, "__eventHelperFunctions");

    assert(duk_is_object(ctx, -1));

    duk_get_prop_string(ctx, -1, eventType.ToString().CString());

    if (duk_is_function(ctx, -1))
    {
        // look in the variant map cache
        duk_push_global_stash(ctx);
        duk_get_prop_index(ctx, -1, JS_GLOBALSTASH_VARIANTMAP_CACHE);
        duk_push_pointer(ctx, (void*) &eventData);
        duk_get_prop(ctx, -2);

        if (!duk_is_object(ctx, -1))
        {
            // pop result
            duk_pop(ctx);

            // we need to push a new variant map and store to cache
            // the cache object will be cleared at the send end in  the
            // global listener above
            js_push_variantmap(ctx, eventData);
            duk_push_pointer(ctx, (void*) &eventData);
            duk_dup(ctx, -2);
            duk_put_prop(ctx, -4);

        }

        duk_remove(ctx, -2); // vmap cache
        duk_remove(ctx, -2); // global stash

        if (duk_pcall(ctx, 1) != 0)
        {
            vm->SendJSErrorEvent();
        }
        else
        {
            // For widget events, need to check return value
            // and set whether handled
            if (eventType == E_WIDGETEVENT)
            {
                if (duk_is_boolean(ctx, -1))
                {
                    if (duk_to_boolean(ctx, -1))
                    {
                        eventData[WidgetEvent::P_HANDLED] = true;
                    }
                }
            }
        }
    }

    duk_set_top(ctx, top);

}
예제 #21
0
/*
 *  Returns non-zero if a key and/or value was enumerated, and:
 *
 *   [enum] -> [key]        (get_value == 0)
 *   [enum] -> [key value]  (get_value == 1)
 *
 *  Returns zero without pushing anything on the stack otherwise.
 */
int duk_hobject_enumerator_next(duk_context *ctx, int get_value) {
	duk_hthread *thr = (duk_hthread *) ctx;
	duk_hobject *e;
	duk_hobject *target;
	duk_hstring *res = NULL;
	duk_uint32_t idx;

	DUK_ASSERT(ctx != NULL);

	/* [... enum] */

	e = duk_require_hobject(ctx, -1);

	/* FIXME: use get tval ptr, more efficient */
	duk_get_prop_stridx(ctx, -1, DUK_STRIDX_INT_NEXT);
	idx = (duk_uint32_t) duk_require_number(ctx, -1);
	duk_pop(ctx);
	DUK_DDDPRINT("enumeration: index is: %d", idx);

	duk_get_prop_stridx(ctx, -1, DUK_STRIDX_INT_TARGET);
	target = duk_require_hobject(ctx, -1);
	DUK_ASSERT(target != NULL);
	duk_pop(ctx);  /* still reachable */

	DUK_DDDPRINT("getting next enum value, target=%!iO, enumerator=%!iT",
	             target, duk_get_tval(ctx, -1));

	/* no array part */
	for (;;) {
		duk_hstring *k;

		if (idx >= e->e_used) {
			DUK_DDDPRINT("enumeration: ran out of elements");
			break;
		}

		/* we know these because enum objects are internally created */
		k = DUK_HOBJECT_E_GET_KEY(e, idx);
		DUK_ASSERT(k != NULL);
		DUK_ASSERT(!DUK_HOBJECT_E_SLOT_IS_ACCESSOR(e, idx));
		DUK_ASSERT(!DUK_TVAL_IS_UNDEFINED_UNUSED(&DUK_HOBJECT_E_GET_VALUE(e, idx).v));

		idx++;

		/* recheck that the property still exists */
		if (!duk_hobject_hasprop_raw(thr, target, k)) {
			DUK_DDDPRINT("property deleted during enumeration, skip");
			continue;
		}

		DUK_DDDPRINT("enumeration: found element, key: %!O", k);
		res = k;
		break;
	}

	DUK_DDDPRINT("enumeration: updating next index to %d", idx);

	duk_push_number(ctx, (double) idx);
	duk_put_prop_stridx(ctx, -2, DUK_STRIDX_INT_NEXT);

	/* [... enum] */

	if (res) {
		duk_push_hstring(ctx, res);
		if (get_value) {
			duk_push_hobject(ctx, target);
			duk_dup(ctx, -2);      /* -> [... enum key target key] */
			duk_get_prop(ctx, -2); /* -> [... enum key target val] */
			duk_remove(ctx, -2);   /* -> [... enum key val] */
			duk_remove(ctx, -3);   /* -> [... key val] */
		} else {
			duk_remove(ctx, -2);   /* -> [... key] */
		}
		return 1;
	} else {
		duk_pop(ctx);  /* -> [...] */
		return 0;
	}
}
예제 #22
0
/*
 *  Returns non-zero if a key and/or value was enumerated, and:
 *
 *   [enum] -> [key]        (get_value == 0)
 *   [enum] -> [key value]  (get_value == 1)
 *
 *  Returns zero without pushing anything on the stack otherwise.
 */
duk_bool_t duk_hobject_enumerator_next(duk_context *ctx, duk_bool_t get_value) {
	duk_hthread *thr = (duk_hthread *) ctx;
	duk_hobject *e;
	duk_hobject *enum_target;
	duk_hstring *res = NULL;
	duk_uint_fast32_t idx;
	duk_bool_t check_existence;

	DUK_ASSERT(ctx != NULL);

	/* [... enum] */

	e = duk_require_hobject(ctx, -1);

	/* XXX use get tval ptr, more efficient */
	duk_get_prop_stridx(ctx, -1, DUK_STRIDX_INT_NEXT);
	idx = (duk_uint_fast32_t) duk_require_uint(ctx, -1);
	duk_pop(ctx);
	DUK_DDD(DUK_DDDPRINT("enumeration: index is: %ld", (long) idx));

	/* Enumeration keys are checked against the enumeration target (to see
	 * that they still exist).  In the proxy enumeration case _target will
	 * be the proxy, and checking key existence against the proxy is not
	 * required (or sensible, as the keys may be fully virtual).
	 */
	duk_get_prop_stridx(ctx, -1, DUK_STRIDX_INT_TARGET);
	enum_target = duk_require_hobject(ctx, -1);
	DUK_ASSERT(enum_target != NULL);
#if defined(DUK_USE_ES6_PROXY)
	check_existence = (!DUK_HOBJECT_HAS_EXOTIC_PROXYOBJ(enum_target));
#else
	check_existence = 1;
#endif
	duk_pop(ctx);  /* still reachable */

	DUK_DDD(DUK_DDDPRINT("getting next enum value, enum_target=%!iO, enumerator=%!iT",
	                     (duk_heaphdr *) enum_target, (duk_tval *) duk_get_tval(ctx, -1)));

	/* no array part */
	for (;;) {
		duk_hstring *k;

		if (idx >= e->e_next) {
			DUK_DDD(DUK_DDDPRINT("enumeration: ran out of elements"));
			break;
		}

		/* we know these because enum objects are internally created */
		k = DUK_HOBJECT_E_GET_KEY(e, idx);
		DUK_ASSERT(k != NULL);
		DUK_ASSERT(!DUK_HOBJECT_E_SLOT_IS_ACCESSOR(e, idx));
		DUK_ASSERT(!DUK_TVAL_IS_UNDEFINED_UNUSED(&DUK_HOBJECT_E_GET_VALUE(e, idx).v));

		idx++;

		/* recheck that the property still exists */
		if (check_existence && !duk_hobject_hasprop_raw(thr, enum_target, k)) {
			DUK_DDD(DUK_DDDPRINT("property deleted during enumeration, skip"));
			continue;
		}

		DUK_DDD(DUK_DDDPRINT("enumeration: found element, key: %!O", (duk_heaphdr *) k));
		res = k;
		break;
	}

	DUK_DDD(DUK_DDDPRINT("enumeration: updating next index to %ld", (long) idx));

	duk_push_number(ctx, (double) idx);
	duk_put_prop_stridx(ctx, -2, DUK_STRIDX_INT_NEXT);

	/* [... enum] */

	if (res) {
		duk_push_hstring(ctx, res);
		if (get_value) {
			duk_push_hobject(ctx, enum_target);
			duk_dup(ctx, -2);      /* -> [... enum key enum_target key] */
			duk_get_prop(ctx, -2); /* -> [... enum key enum_target val] */
			duk_remove(ctx, -2);   /* -> [... enum key val] */
			duk_remove(ctx, -3);   /* -> [... key val] */
		} else {
			duk_remove(ctx, -2);   /* -> [... key] */
		}
		return 1;
	} else {
		duk_pop(ctx);  /* -> [...] */
		return 0;
	}
}
예제 #23
0
static duk_ret_t duv_require(duk_context *ctx) {
  int is_main = 0;

  const duv_schema_entry schema[] = {
    { "id", duk_is_string },
    { NULL, NULL }
  };

  dschema_check(ctx, schema);

  // push Duktape
  duk_get_global_string(ctx, "Duktape");

  // id = Duktape.modResolve(this, id);
  duk_get_prop_string(ctx, -1, "modResolve");
  duk_push_this(ctx);
  {
    // Check if we're in main
    duk_get_prop_string(ctx, -1, "exports");
    if (duk_is_undefined(ctx, -1)) { is_main = 1; }
    duk_pop(ctx);
  }
  duk_dup(ctx, 0);
  duk_call_method(ctx, 1);
  duk_replace(ctx, 0);

  // push Duktape.modLoaded
  duk_get_prop_string(ctx, -1, "modLoaded");

  // push Duktape.modLoaded[id];
  duk_dup(ctx, 0);
  duk_get_prop(ctx, -2);

  // if (typeof Duktape.modLoaded[id] === 'object') {
  //   return Duktape.modLoaded[id].exports;
  // }
  if (duk_is_object(ctx, -1)) {
    duk_get_prop_string(ctx, -1, "exports");
    return 1;
  }

  // pop Duktape.modLoaded[id]
  duk_pop(ctx);

  // push module = { id: id, exports: {} }
  duk_push_object(ctx);
  duk_dup(ctx, 0);
  duk_put_prop_string(ctx, -2, "id");
  duk_push_object(ctx);
  duk_put_prop_string(ctx, -2, "exports");

  // Set module.main = true if we're the first script
  if (is_main) {
    duk_push_boolean(ctx, 1);
    duk_put_prop_string(ctx, -2, "main");
  }

  // Or set module.parent = parent if we're a child.
  else {
    duk_push_this(ctx);
    duk_put_prop_string(ctx, -2, "parent");
  }

  // Set the prototype for the module to access require.
  duk_push_global_stash(ctx);
  duk_get_prop_string(ctx, -1, "modulePrototype");
  duk_set_prototype(ctx, -3);
  duk_pop(ctx);

  // Duktape.modLoaded[id] = module
  duk_dup(ctx, 0);
  duk_dup(ctx, -2);
  duk_put_prop(ctx, -4);

  // remove Duktape.modLoaded
  duk_remove(ctx, -2);

  // push Duktape.modLoad(module)
  duk_get_prop_string(ctx, -2, "modLoad");
  duk_dup(ctx, -2);
  duk_call_method(ctx, 0);

  // if ret !== undefined module.exports = ret;
  if (duk_is_undefined(ctx, -1)) {
    duk_pop(ctx);
  }
  else {
    duk_put_prop_string(ctx, -2, "exports");
  }

  duk_get_prop_string(ctx, -1, "exports");

  return 1;
}