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node-api: return napi_exception_pending on proxy handlers
Accessing JS objects can be trapped with proxy handlers. These handlers can throw when no node-api errors occur. In such cases, `napi_pending_exception` should be returned.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,80 @@ | ||
| #include <assert.h> | ||
| #include <js_native_api.h> | ||
| #include <string.h> | ||
| #include "../common.h" | ||
|
|
||
| static napi_value TestExceptions(napi_env env, napi_callback_info info) { | ||
| size_t argc = 1; | ||
| napi_value args[1]; | ||
| NODE_API_CALL(env, napi_get_cb_info(env, info, &argc, args, NULL, NULL)); | ||
|
|
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| napi_value target = args[0]; | ||
| napi_value exception, key, value; | ||
| napi_status status; | ||
| bool is_exception_pending; | ||
| bool bool_result; | ||
|
|
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| NODE_API_CALL(env, | ||
| napi_create_string_utf8(env, "key", NAPI_AUTO_LENGTH, &key)); | ||
| NODE_API_CALL( | ||
| env, napi_create_string_utf8(env, "value", NAPI_AUTO_LENGTH, &value)); | ||
|
|
||
| #define PROCEDURE(call) \ | ||
| { \ | ||
| status = (call); \ | ||
| assert(status == napi_pending_exception); \ | ||
| NODE_API_CALL(env, napi_is_exception_pending(env, &is_exception_pending)); \ | ||
| assert(is_exception_pending); \ | ||
| NODE_API_CALL(env, napi_get_and_clear_last_exception(env, &exception)); \ | ||
| } | ||
| // discard the exception values. | ||
|
|
||
| // properties | ||
| PROCEDURE(napi_set_property(env, target, key, value)); | ||
| PROCEDURE(napi_set_named_property(env, target, "key", value)); | ||
| PROCEDURE(napi_has_property(env, target, key, &bool_result)); | ||
| PROCEDURE(napi_has_own_property(env, target, key, &bool_result)); | ||
| PROCEDURE(napi_has_named_property(env, target, "key", &bool_result)); | ||
| PROCEDURE(napi_get_property(env, target, key, &value)); | ||
| PROCEDURE(napi_get_named_property(env, target, "key", &value)); | ||
| PROCEDURE(napi_delete_property(env, target, key, &bool_result)); | ||
|
|
||
| // elements | ||
| PROCEDURE(napi_set_element(env, target, 0, value)); | ||
| PROCEDURE(napi_has_element(env, target, 0, &bool_result)); | ||
| PROCEDURE(napi_get_element(env, target, 0, &value)); | ||
| PROCEDURE(napi_delete_element(env, target, 0, &bool_result)); | ||
|
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| napi_property_descriptor descriptors[] = { | ||
| DECLARE_NODE_API_PROPERTY_VALUE("key", value), | ||
| }; | ||
| PROCEDURE(napi_define_properties( | ||
| env, target, sizeof(descriptors) / sizeof(*descriptors), descriptors)); | ||
|
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||
| PROCEDURE(napi_get_all_property_names(env, | ||
| target, | ||
| napi_key_own_only, | ||
| napi_key_enumerable, | ||
| napi_key_keep_numbers, | ||
| &value)); | ||
| PROCEDURE(napi_get_property_names(env, target, &value)); | ||
|
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| return NULL; | ||
| } | ||
|
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| EXTERN_C_START | ||
| napi_value Init(napi_env env, napi_value exports) { | ||
| napi_property_descriptor descriptors[] = { | ||
| DECLARE_NODE_API_PROPERTY("testExceptions", TestExceptions), | ||
| }; | ||
|
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||
| NODE_API_CALL( | ||
| env, | ||
| napi_define_properties(env, | ||
| exports, | ||
| sizeof(descriptors) / sizeof(*descriptors), | ||
| descriptors)); | ||
|
|
||
| return exports; | ||
| } | ||
| EXTERN_C_END |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,18 @@ | ||
| 'use strict'; | ||
| const common = require('../../common'); | ||
|
|
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| // Test | ||
| const { testExceptions } = require(`./build/${common.buildType}/test_exceptions`); | ||
|
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| function throws() { | ||
| throw new Error('foobar'); | ||
| } | ||
| testExceptions(new Proxy({}, { | ||
| get: common.mustCallAtLeast(throws, 1), | ||
| getOwnPropertyDescriptor: common.mustCallAtLeast(throws, 1), | ||
| defineProperty: common.mustCallAtLeast(throws, 1), | ||
| deleteProperty: common.mustCallAtLeast(throws, 1), | ||
| has: common.mustCallAtLeast(throws, 1), | ||
| set: common.mustCallAtLeast(throws, 1), | ||
| ownKeys: common.mustCallAtLeast(throws, 1), | ||
| })); |