static duk_ret_t test(duk_context *ctx) {
duk_push_object(ctx); /* [ ... obj ] */
duk_push_int(ctx, 42); /* [ ... obj 42 ] */
duk_put_prop_string(ctx, -2, "meaningOfLife"); /* [ ... obj ] */
/* compaction has no external impact */
duk_compact(ctx, -1); /* [ ... obj ] */
duk_dup_top(ctx);
printf("%s\n", duk_json_encode(ctx, -1));
duk_pop(ctx);
/* compaction doesn't prevent new properties from being added */
duk_push_string(ctx, "bar"); /* [ ... obj "bar" ] */
duk_put_prop_string(ctx, -2, "foo"); /* [ ... obj ] */
duk_dup_top(ctx);
printf("%s\n", duk_json_encode(ctx, -1));
duk_pop(ctx);
/* compaction can be done multiple times */
duk_compact(ctx, -1); /* [ ... obj ] */
duk_dup_top(ctx);
printf("%s\n", duk_json_encode(ctx, -1));
duk_pop(ctx);
return 0;
}
/* Constructor */
DUK_INTERNAL duk_ret_t duk_bi_logger_constructor(duk_context *ctx) {
duk_hthread *thr = (duk_hthread *) ctx;
duk_idx_t nargs;
/* Calling as a non-constructor is not meaningful. */
if (!duk_is_constructor_call(ctx)) {
return DUK_RET_TYPE_ERROR;
}
nargs = duk_get_top(ctx);
duk_set_top(ctx, 1);
duk_push_this(ctx);
/* [ name this ] */
if (nargs == 0) {
/* Automatic defaulting of logger name from caller. This would
* work poorly with tail calls, but constructor calls are currently
* never tail calls, so tail calls are not an issue now.
*/
if (thr->callstack_top >= 2) {
duk_activation *act_caller = thr->callstack + thr->callstack_top - 2;
duk_hobject *func_caller;
func_caller = DUK_ACT_GET_FUNC(act_caller);
if (func_caller) {
/* Stripping the filename might be a good idea
* ("/foo/bar/quux.js" -> logger name "quux"),
* but now used verbatim.
*/
duk_push_hobject(ctx, func_caller);
duk_get_prop_stridx(ctx, -1, DUK_STRIDX_FILE_NAME);
duk_replace(ctx, 0);
}
}
}
/* the stack is unbalanced here on purpose; we only rely on the
* initial two values: [ name this ].
*/
if (duk_is_string(ctx, 0)) {
duk_dup(ctx, 0);
duk_put_prop_stridx(ctx, 1, DUK_STRIDX_LC_N);
} else {
/* don't set 'n' at all, inherited value is used as name */
}
duk_compact(ctx, 1);
return 0; /* keep default instance */
}
AJ_Status AJS_RegisterIO(duk_context* ctx, duk_idx_t ioIdx)
{
duk_idx_t pinIdx;
duk_idx_t i;
uint16_t numPins = AJS_TargetIO_GetNumPins();
/*
* Create base pin protoype
*/
pinIdx = duk_push_object(ctx);
AJS_SetPropertyAccessors(ctx, pinIdx, "functions", NULL, NativeFunctionsGetter);
AJS_SetPropertyAccessors(ctx, pinIdx, "info", NULL, NativeInfoGetter);
/*
* Create the pin objects
*/
duk_push_array(ctx);
for (i = 0; i < numPins; ++i) {
AJS_CreateObjectFromPrototype(ctx, pinIdx);
duk_push_int(ctx, i);
duk_put_prop_string(ctx, -2, "id");
duk_put_prop_index(ctx, -2, i);
}
duk_put_prop_string(ctx, ioIdx, "pin");
duk_pop(ctx);
/*
* Register the native functions
*/
AJS_PutFunctionList(ctx, ioIdx, io_native_functions, TRUE);
/*
* GPIO attribute constants
*/
duk_put_number_list(ctx, ioIdx, io_constants);
/*
* A hidden property for keeping track of triggers
*/
duk_push_string(ctx, AJS_HIDDEN_PROP("trigs"));
duk_push_array(ctx);
duk_def_prop(ctx, ioIdx, DUK_DEFPROP_HAVE_VALUE | DUK_DEFPROP_HAVE_WRITABLE);
/*
* Compact the IO object and set it on the global object
*/
duk_compact(ctx, ioIdx);
duk_dup(ctx, ioIdx);
duk_put_global_string(ctx, AJS_IOObjectName);
return AJ_OK;
}
duk_ret_t duk_bi_duktape_object_compact(duk_context *ctx) {
duk_compact(ctx, 0);
return 1; /* return the argument object */
}
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;
}
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 */
}
//void duk_compact(duk_context *ctx, duk_idx_t obj_index);
void aperl_duk_compact(duk_context *ctx, duk_idx_t obj_index) {
duk_compact(ctx, obj_index);
}
DUK_INTERNAL duk_ret_t duk_bi_duktape_object_compact(duk_context *ctx) {
DUK_ASSERT_TOP(ctx, 1);
duk_compact(ctx, 0);
return 1; /* return the argument object */
}
static duk_uint8_t *duk__load_func(duk_context *ctx, duk_uint8_t *p, duk_uint8_t *p_end) {
duk_hthread *thr;
duk_hcompiledfunction *h_fun;
duk_hbuffer *h_data;
duk_size_t data_size;
duk_uint32_t count_instr, count_const, count_funcs;
duk_uint32_t n;
duk_uint32_t tmp32;
duk_small_uint_t const_type;
duk_uint8_t *fun_data;
duk_uint8_t *q;
duk_idx_t idx_base;
duk_tval *tv;
duk_uarridx_t arr_idx;
/* XXX: There's some overlap with duk_js_closure() here, but
* seems difficult to share code. Ensure that the final function
* looks the same as created by duk_js_closure().
*/
DUK_ASSERT(ctx != NULL);
thr = (duk_hthread *) ctx;
DUK_DD(DUK_DDPRINT("loading function, p=%p, p_end=%p", (void *) p, (void *) p_end));
DUK__ASSERT_LEFT(3 * 4);
count_instr = DUK_RAW_READ_U32_BE(p);
count_const = DUK_RAW_READ_U32_BE(p);
count_funcs = DUK_RAW_READ_U32_BE(p);
data_size = sizeof(duk_tval) * count_const +
sizeof(duk_hobject *) * count_funcs +
sizeof(duk_instr_t) * count_instr;
DUK_DD(DUK_DDPRINT("instr=%ld, const=%ld, funcs=%ld, data_size=%ld",
(long) count_instr, (long) count_const,
(long) count_const, (long) data_size));
/* Value stack is used to ensure reachability of constants and
* inner functions being loaded. Require enough space to handle
* large functions correctly.
*/
duk_require_stack(ctx, 2 + count_const + count_funcs);
idx_base = duk_get_top(ctx);
/* Push function object, init flags etc. This must match
* duk_js_push_closure() quite carefully.
*/
duk_push_compiledfunction(ctx);
h_fun = duk_get_hcompiledfunction(ctx, -1);
DUK_ASSERT(h_fun != NULL);
DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION((duk_hobject *) h_fun));
DUK_ASSERT(DUK_HCOMPILEDFUNCTION_GET_DATA(thr->heap, h_fun) == NULL);
DUK_ASSERT(DUK_HCOMPILEDFUNCTION_GET_FUNCS(thr->heap, h_fun) == NULL);
DUK_ASSERT(DUK_HCOMPILEDFUNCTION_GET_BYTECODE(thr->heap, h_fun) == NULL);
h_fun->nregs = DUK_RAW_READ_U16_BE(p);
h_fun->nargs = DUK_RAW_READ_U16_BE(p);
#if defined(DUK_USE_DEBUGGER_SUPPORT)
h_fun->start_line = DUK_RAW_READ_U32_BE(p);
h_fun->end_line = DUK_RAW_READ_U32_BE(p);
#else
p += 8; /* skip line info */
#endif
/* duk_hcompiledfunction flags; quite version specific */
tmp32 = DUK_RAW_READ_U32_BE(p);
DUK_HEAPHDR_SET_FLAGS((duk_heaphdr *) h_fun, tmp32);
/* standard prototype */
DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr, &h_fun->obj, thr->builtins[DUK_BIDX_FUNCTION_PROTOTYPE]);
/* assert just a few critical flags */
DUK_ASSERT(DUK_HEAPHDR_GET_TYPE((duk_heaphdr *) h_fun) == DUK_HTYPE_OBJECT);
DUK_ASSERT(!DUK_HOBJECT_HAS_BOUND(&h_fun->obj));
DUK_ASSERT(DUK_HOBJECT_HAS_COMPILEDFUNCTION(&h_fun->obj));
DUK_ASSERT(!DUK_HOBJECT_HAS_NATIVEFUNCTION(&h_fun->obj));
DUK_ASSERT(!DUK_HOBJECT_HAS_THREAD(&h_fun->obj));
DUK_ASSERT(!DUK_HOBJECT_HAS_EXOTIC_ARRAY(&h_fun->obj));
DUK_ASSERT(!DUK_HOBJECT_HAS_EXOTIC_STRINGOBJ(&h_fun->obj));
DUK_ASSERT(!DUK_HOBJECT_HAS_EXOTIC_ARGUMENTS(&h_fun->obj));
/* Create function 'data' buffer but don't attach it yet. */
fun_data = (duk_uint8_t *) duk_push_fixed_buffer(ctx, data_size);
DUK_ASSERT(fun_data != NULL);
/* Load bytecode instructions. */
DUK_ASSERT(sizeof(duk_instr_t) == 4);
DUK__ASSERT_LEFT(count_instr * sizeof(duk_instr_t));
#if defined(DUK_USE_INTEGER_BE)
q = fun_data + sizeof(duk_tval) * count_const + sizeof(duk_hobject *) * count_funcs;
DUK_MEMCPY((void *) q,
(const void *) p,
sizeof(duk_instr_t) * count_instr);
p += sizeof(duk_instr_t) * count_instr;
#else
q = fun_data + sizeof(duk_tval) * count_const + sizeof(duk_hobject *) * count_funcs;
for (n = count_instr; n > 0; n--) {
*((duk_instr_t *) (void *) q) = DUK_RAW_READ_U32_BE(p);
q += sizeof(duk_instr_t);
}
#endif
/* Load constants onto value stack but don't yet copy to buffer. */
for (n = count_const; n > 0; n--) {
DUK__ASSERT_LEFT(1);
const_type = DUK_RAW_READ_U8(p);
switch (const_type) {
case DUK__SER_STRING: {
p = duk__load_string_raw(ctx, p);
break;
}
case DUK__SER_NUMBER: {
/* Important to do a fastint check so that constants are
* properly read back as fastints.
*/
duk_tval tv_tmp;
duk_double_t val;
DUK__ASSERT_LEFT(8);
val = DUK_RAW_READ_DOUBLE_BE(p);
DUK_TVAL_SET_NUMBER_CHKFAST(&tv_tmp, val);
duk_push_tval(ctx, &tv_tmp);
break;
}
default: {
goto format_error;
}
}
}
/* Load inner functions to value stack, but don't yet copy to buffer. */
for (n = count_funcs; n > 0; n--) {
p = duk__load_func(ctx, p, p_end);
if (p == NULL) {
goto format_error;
}
}
/* With constants and inner functions on value stack, we can now
* atomically finish the function 'data' buffer, bump refcounts,
* etc.
*
* Here we take advantage of the value stack being just a duk_tval
* array: we can just memcpy() the constants as long as we incref
* them afterwards.
*/
h_data = (duk_hbuffer *) duk_get_hbuffer(ctx, idx_base + 1);
DUK_ASSERT(h_data != NULL);
DUK_ASSERT(!DUK_HBUFFER_HAS_DYNAMIC(h_data));
DUK_HCOMPILEDFUNCTION_SET_DATA(thr->heap, h_fun, h_data);
DUK_HBUFFER_INCREF(thr, h_data);
tv = duk_get_tval(ctx, idx_base + 2); /* may be NULL if no constants or inner funcs */
DUK_ASSERT((count_const == 0 && count_funcs == 0) || tv != NULL);
q = fun_data;
if (count_const > 0) {
/* Explicit zero size check to avoid NULL 'tv'. */
DUK_MEMCPY((void *) q, (const void *) tv, sizeof(duk_tval) * count_const);
for (n = count_const; n > 0; n--) {
DUK_TVAL_INCREF_FAST(thr, (duk_tval *) (void *) q); /* no side effects */
q += sizeof(duk_tval);
}
tv += count_const;
}
DUK_HCOMPILEDFUNCTION_SET_FUNCS(thr->heap, h_fun, (duk_hobject **) (void *) q);
for (n = count_funcs; n > 0; n--) {
duk_hobject *h_obj;
DUK_ASSERT(DUK_TVAL_IS_OBJECT(tv));
h_obj = DUK_TVAL_GET_OBJECT(tv);
DUK_ASSERT(h_obj != NULL);
tv++;
DUK_HOBJECT_INCREF(thr, h_obj);
*((duk_hobject **) (void *) q) = h_obj;
q += sizeof(duk_hobject *);
}
DUK_HCOMPILEDFUNCTION_SET_BYTECODE(thr->heap, h_fun, (duk_instr_t *) (void *) q);
/* The function object is now reachable and refcounts are fine,
* so we can pop off all the temporaries.
*/
DUK_DDD(DUK_DDDPRINT("function is reachable, reset top; func: %!iT", duk_get_tval(ctx, idx_base)));
duk_set_top(ctx, idx_base + 1);
/* Setup function properties. */
tmp32 = DUK_RAW_READ_U32_BE(p);
duk_push_u32(ctx, tmp32);
duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_LENGTH, DUK_PROPDESC_FLAGS_NONE);
p = duk__load_string_raw(ctx, p);
if (DUK_HOBJECT_HAS_NAMEBINDING((duk_hobject *) h_fun)) {
/* Original function instance/template had NAMEBINDING.
* Must create a lexical environment on loading to allow
* recursive functions like 'function foo() { foo(); }'.
*/
duk_hobject *proto;
proto = thr->builtins[DUK_BIDX_GLOBAL_ENV];
(void) duk_push_object_helper_proto(ctx,
DUK_HOBJECT_FLAG_EXTENSIBLE |
DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_DECENV),
proto);
duk_dup(ctx, -2); /* -> [ func funcname env funcname ] */
duk_dup(ctx, idx_base); /* -> [ func funcname env funcname func ] */
duk_xdef_prop(ctx, -3, DUK_PROPDESC_FLAGS_NONE); /* -> [ func funcname env ] */
duk_xdef_prop_stridx(ctx, idx_base, DUK_STRIDX_INT_LEXENV, DUK_PROPDESC_FLAGS_WC);
/* since closure has NEWENV, never define DUK_STRIDX_INT_VARENV, as it
* will be ignored anyway
*/
}
duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_NAME, DUK_PROPDESC_FLAGS_NONE);
p = duk__load_string_raw(ctx, p);
duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_FILE_NAME, DUK_PROPDESC_FLAGS_WC);
duk_push_object(ctx);
duk_dup(ctx, -2);
duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_CONSTRUCTOR, DUK_PROPDESC_FLAGS_WC); /* func.prototype.constructor = func */
duk_compact(ctx, -1);
duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_PROTOTYPE, DUK_PROPDESC_FLAGS_W);
p = duk__load_buffer_raw(ctx, p);
duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_INT_PC2LINE, DUK_PROPDESC_FLAGS_WC);
duk_push_object(ctx); /* _Varmap */
for (;;) {
/* XXX: awkward */
p = duk__load_string_raw(ctx, p);
if (duk_get_length(ctx, -1) == 0) {
duk_pop(ctx);
break;
}
tmp32 = DUK_RAW_READ_U32_BE(p);
duk_push_u32(ctx, tmp32);
duk_put_prop(ctx, -3);
}
duk_compact(ctx, -1);
duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_INT_VARMAP, DUK_PROPDESC_FLAGS_NONE);
duk_push_array(ctx); /* _Formals */
for (arr_idx = 0; ; arr_idx++) {
/* XXX: awkward */
p = duk__load_string_raw(ctx, p);
if (duk_get_length(ctx, -1) == 0) {
duk_pop(ctx);
break;
}
duk_put_prop_index(ctx, -2, arr_idx);
}
duk_compact(ctx, -1);
duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_INT_FORMALS, DUK_PROPDESC_FLAGS_NONE);
/* Return with final function pushed on stack top. */
DUK_DD(DUK_DDPRINT("final loaded function: %!iT", duk_get_tval(ctx, -1)));
DUK_ASSERT_TOP(ctx, idx_base + 1);
return p;
format_error:
return NULL;
}
