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ca786c3734
Change `napi_callback` to return `napi_value` directly instead of requiring `napi_set_return_value`. When we invoke the callback, we will check the return value and call `SetReturnValue` ourselves. If the callback returns `NULL`, we don't set the return value in v8 which would have the same effect as previously if the callback didn't call `napi_set_return_value`. Seems to be a more natural way to handle return values from callbacks. As a consequence, remove `napi_set_return_value`. Add a `napi_value` to `napi_property_descriptor` to support string values which couldn't be passed in the `utf8name` parameter or symbols as property names. Class names, however, cannot be symbols so this `napi_value` must be a string type in that case. Remove all of the `napi_callback_info` helpers except for `napi_get_cb_info` and make all the parameters to `napi_get_cb_info` optional except for argc. Update all the test collateral according to these changes. Also add `test/addons-napi/common.h` to house some common macros for wrapping N-API calls and error handling. PR-URL: https://github.com/nodejs/node/pull/12248 Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com> Reviewed-By: Anna Henningsen <anna@addaleax.net>
38 lines
1.1 KiB
C
38 lines
1.1 KiB
C
#include <node_api.h>
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#include "../common.h"
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napi_value Add(napi_env env, napi_callback_info info) {
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size_t argc = 2;
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napi_value args[2];
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NAPI_CALL(env, napi_get_cb_info(env, info, &argc, args, NULL, NULL));
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NAPI_ASSERT(env, argc >= 2, "Wrong number of arguments");
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napi_valuetype valuetype0;
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NAPI_CALL(env, napi_typeof(env, args[0], &valuetype0));
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napi_valuetype valuetype1;
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NAPI_CALL(env, napi_typeof(env, args[1], &valuetype1));
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NAPI_ASSERT(env, valuetype0 == napi_number && valuetype1 == napi_number,
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"Wrong argument type. Numbers expected.");
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double value0;
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NAPI_CALL(env, napi_get_value_double(env, args[0], &value0));
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double value1;
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NAPI_CALL(env, napi_get_value_double(env, args[1], &value1));
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napi_value sum;
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NAPI_CALL(env, napi_create_number(env, value0 + value1, &sum));
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return sum;
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}
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void Init(napi_env env, napi_value exports, napi_value module, void* priv) {
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napi_property_descriptor desc = DECLARE_NAPI_PROPERTY("add", Add);
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NAPI_CALL_RETURN_VOID(env, napi_define_properties(env, exports, 1, &desc));
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}
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NAPI_MODULE(addon, Init)
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