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77ca3cb474
Basic support for Dataview is added in this commit. This is achieved by using three functions, napi_create_dataview(), napi_is_dataview() and napi_get_dataview_info(). PR-URL: https://github.com/nodejs/node/pull/14382 Fixes: https://github.com/nodejs/node/issues/13926 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Timothy Gu <timothygu99@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
50 lines
1.5 KiB
C
50 lines
1.5 KiB
C
#include <node_api.h>
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#include <string.h>
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#include "../common.h"
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napi_value CreateDataView(napi_env env, napi_callback_info info) {
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size_t argc = 1;
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napi_value args [1];
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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 == 1, "Wrong number of arguments");
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napi_valuetype valuetype;
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napi_value input_dataview = args[0];
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NAPI_CALL(env, napi_typeof(env, input_dataview, &valuetype));
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NAPI_ASSERT(env, valuetype == napi_object,
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"Wrong type of arguments. Expects a DataView as the first "
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"argument.");
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bool is_dataview;
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NAPI_CALL(env, napi_is_dataview(env, input_dataview, &is_dataview));
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NAPI_ASSERT(env, is_dataview,
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"Wrong type of arguments. Expects a DataView as the first "
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"argument.");
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size_t byte_offset = 0;
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size_t length = 0;
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napi_value buffer;
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NAPI_CALL(env,
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napi_get_dataview_info(env, input_dataview, &length, NULL,
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&buffer, &byte_offset));
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napi_value output_dataview;
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NAPI_CALL(env,
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napi_create_dataview(env, length, buffer,
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byte_offset, &output_dataview));
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return output_dataview;
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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 descriptors[] = {
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DECLARE_NAPI_PROPERTY("CreateDataView", CreateDataView)
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};
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NAPI_CALL_RETURN_VOID(env, napi_define_properties(
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env, exports, sizeof(descriptors) / sizeof(*descriptors), descriptors));
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}
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NAPI_MODULE(addon, Init)
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