コード例 #1
0
/*
 * call-seq:
 *   exec_string(string[, filename]) -> nil
 *
 * Evaluate JavaScript expression within context returning the value as a Ruby
 * object.
 *
 *     ctx.exec_string("var foo = 42")
 *     ctx.eval_string("foo") #=> 42
 *
 */
static VALUE ctx_exec_string(int argc, VALUE *argv, VALUE self)
{
  struct state *state;
  Data_Get_Struct(self, struct state, state);

  VALUE source;
  VALUE filename;

  rb_scan_args(argc, argv, "11", &source, &filename);

  if (NIL_P(filename)) {
    filename = sDefaultFilename;
  }

  StringValue(source);
  StringValue(filename);

  ctx_push_ruby_object(state, source);
  ctx_push_ruby_object(state, filename);

  if (duk_pcompile(state->ctx, 0) == DUK_EXEC_ERROR) {
    raise_ctx_error(state);
  }

  if (duk_pcall(state->ctx, 0) == DUK_EXEC_ERROR) {
    raise_ctx_error(state);
  }

  duk_set_top(state->ctx, 0);
  return Qnil;
}
コード例 #2
0
ファイル: styleContext.cpp プロジェクト: xvilan/tangram-es
void StyleContext::initFunctions(const Scene& _scene) {

    if (_scene.id == m_sceneId) {
        return;
    }
    m_sceneId = _scene.id;

    auto arr_idx = duk_push_array(m_ctx);
    int id = 0;

    for (auto& function : _scene.functions()) {
        //logMsg("compile '%s'\n", function.c_str());
        duk_push_string(m_ctx, function.c_str());
        duk_push_string(m_ctx, "");

        if (duk_pcompile(m_ctx, DUK_COMPILE_FUNCTION) == 0) {
            duk_put_prop_index(m_ctx, arr_idx, id);
        } else {
            logMsg("Error: compile failed: %s\n", duk_safe_to_string(m_ctx, -1));
            duk_pop(m_ctx);
        }
        id++;
    }

    if (!duk_put_global_string(m_ctx, FUNC_ID)) {
        logMsg("Error: 'fns' object not set\n");
    }

    DUMP("setScene - %d functions\n", id);
}
コード例 #3
0
bool StyleContext::setFunctions(const std::vector<std::string>& _functions) {

    auto arr_idx = duk_push_array(m_ctx);
    int id = 0;

    bool ok = true;

    for (auto& function : _functions) {
        duk_push_string(m_ctx, function.c_str());
        duk_push_string(m_ctx, "");

        if (duk_pcompile(m_ctx, DUK_COMPILE_FUNCTION) == 0) {
            duk_put_prop_index(m_ctx, arr_idx, id);
        } else {
            LOGW("Compile failed: %s\n%s\n---",
                 duk_safe_to_string(m_ctx, -1),
                 function.c_str());
            duk_pop(m_ctx);
            ok = false;
        }
        id++;
    }

    if (!duk_put_global_string(m_ctx, FUNC_ID)) {
        LOGE("'fns' object not set");
    }

    DUMP("setFunctions\n");
    return ok;
}
コード例 #4
0
ファイル: duk_v1_compat.c プロジェクト: GarethNelson/duktape
duk_int_t duk_pcompile_file(duk_context *ctx, duk_uint_t flags, const char *path) {
	duk_int_t rc;

	duk_push_string_file_raw(ctx, path, DUK_STRING_PUSH_SAFE);
	duk_push_string(ctx, path);
	rc = duk_pcompile(ctx, flags);
	return rc;
}
コード例 #5
0
void StyleContext::parseSceneGlobals(const YAML::Node& node, const std::string& key, int seqIndex,
                                     duk_idx_t dukObject) {

    switch(node.Type()) {
        case YAML::NodeType::Scalar:
            if (key.size() == 0) {
                duk_push_string(m_ctx, node.Scalar().c_str());
                duk_put_prop_index(m_ctx, dukObject, seqIndex);
            } else {
                auto nodeValue = node.Scalar();
                if (nodeValue.compare(0, 8, "function") == 0) {
                    duk_push_string(m_ctx, key.c_str()); // push property key
                    duk_push_string(m_ctx, nodeValue.c_str()); // push function string
                    duk_push_string(m_ctx, "");
                    if (duk_pcompile(m_ctx, DUK_COMPILE_FUNCTION) == 0) { // compile function
                        duk_put_prop(m_ctx, -3); // put {key: function()}
                    } else {
                        LOGW("Compile failed in global function: %s\n%s\n---",
                             duk_safe_to_string(m_ctx, -1),
                             nodeValue.c_str());
                        duk_pop(m_ctx); //pop error
                        duk_pop(m_ctx); //pop key
                        // push property as a string
                        duk_push_string(m_ctx, nodeValue.c_str());
                        duk_put_prop_string(m_ctx, dukObject, key.c_str());
                    }
                } else {
                    duk_push_string(m_ctx, nodeValue.c_str());
                    duk_put_prop_string(m_ctx, dukObject, key.c_str());
                }
            }
            break;
        case YAML::NodeType::Sequence:
            {
                auto seqObj = duk_push_array(m_ctx);
                for (int i = 0; i < node.size(); i++) {
                    parseSceneGlobals(node[i], "", i, seqObj);
                }
                duk_put_prop_string(m_ctx, seqObj-1, key.c_str());
                break;
            }
        case YAML::NodeType::Map:
            {
                //duk_push_string(m_ctx, key.c_str());
                auto mapObj = duk_push_object(m_ctx);
                for (auto& mapNode : node) {
                    auto itemKey = mapNode.first.Scalar();
                    parseSceneGlobals(mapNode.second, itemKey, 0, mapObj);
                }
                duk_put_prop_string(m_ctx, mapObj-1, key.c_str());
            }
        default:
            break;
    }

    return;
}
コード例 #6
0
duk_ret_t test_top_0(duk_context *ctx, void *udata) {
	duk_int_t rc;

	(void) udata;

	printf("top before: %ld\n", (long) duk_get_top(ctx));

	rc = duk_pcompile(ctx, 0);
	printf("duk_pcompile() rc: %ld\n", (long) rc);

	printf("final top: %ld\n", (long) duk_get_top(ctx));
	return 0;
}
コード例 #7
0
ファイル: duk_v1_compat.c プロジェクト: GarethNelson/duktape
duk_int_t duk_peval_file(duk_context *ctx, const char *path) {
	duk_int_t rc;

	duk_push_string_file_raw(ctx, path, DUK_STRING_PUSH_SAFE);
	duk_push_string(ctx, path);
	rc = duk_pcompile(ctx, DUK_COMPILE_EVAL);
	if (rc != 0) {
		return rc;
	}
	duk_push_global_object(ctx);  /* 'this' binding */
	rc = duk_pcall_method(ctx, 0);
	return rc;
}
コード例 #8
0
ファイル: styleContext.cpp プロジェクト: xvilan/tangram-es
bool StyleContext::addFunction(const std::string& _name, const std::string& _func) {

    duk_push_string(m_ctx, _func.c_str());
    duk_push_string(m_ctx, _name.c_str());

    if (duk_pcompile(m_ctx, DUK_COMPILE_FUNCTION) != 0) {
        logMsg("Error: compile failed: %s\n", duk_safe_to_string(m_ctx, -1));
        return false;
    }

    // Put function in global scope
    duk_put_global_string(m_ctx, _name.c_str());


    DUMP("addFunction\n");
    return true;
}
コード例 #9
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;
}
コード例 #10
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 */
}
コード例 #11
0
//duk_int_t duk_pcompile(duk_context *ctx, duk_uint_t flags);
duk_int_t aperl_duk_pcompile(duk_context *ctx, duk_uint_t flags) {
	duk_int_t ret = duk_pcompile(ctx, flags);
	return ret;
}