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napi_binding.c
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#include <node_api.h>
#include <assert.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
static napi_value CallWithString(napi_env env, napi_callback_info info) {
napi_status status;
size_t argc = 1;
napi_value args[1];
status = napi_get_cb_info(env, info, &argc, args, NULL, NULL);
assert(status == napi_ok);
napi_valuetype types[1];
status = napi_typeof(env, args[0], types);
assert(status == napi_ok);
assert(types[0] == napi_string);
if (types[0] == napi_string) {
size_t len = 0;
// Get the length
status = napi_get_value_string_utf8(env, args[0], NULL, 0, &len);
assert(status == napi_ok);
char* buf = (char*)malloc(len + 1);
status = napi_get_value_string_utf8(env, args[0], buf, len + 1, &len);
assert(status == napi_ok);
free(buf);
}
return NULL;
}
static napi_value CallWithArray(napi_env env, napi_callback_info info) {
napi_status status;
size_t argc = 1;
napi_value args[1];
status = napi_get_cb_info(env, info, &argc, args, NULL, NULL);
assert(status == napi_ok);
napi_value array = args[0];
bool is_array = false;
status = napi_is_array(env, array, &is_array);
assert(status == napi_ok);
assert(is_array);
if (is_array) {
uint32_t length;
status = napi_get_array_length(env, array, &length);
assert(status == napi_ok);
uint32_t i;
for (i = 0; i < length; ++i) {
napi_value v;
status = napi_get_element(env, array, i, &v);
assert(status == napi_ok);
}
}
return NULL;
}
static napi_value CallWithNumber(napi_env env, napi_callback_info info) {
napi_status status;
size_t argc = 1;
napi_value args[1];
status = napi_get_cb_info(env, info, &argc, args, NULL, NULL);
assert(status == napi_ok);
napi_valuetype types[1];
status = napi_typeof(env, args[0], types);
assert(status == napi_ok);
assert(types[0] == napi_number);
if (types[0] == napi_number) {
double value = 0.0;
status = napi_get_value_double(env, args[0], &value);
assert(status == napi_ok);
}
return NULL;
}
static napi_value CallWithObject(napi_env env, napi_callback_info info) {
napi_status status;
size_t argc = 1;
napi_value args[1];
status = napi_get_cb_info(env, info, &argc, args, NULL, NULL);
assert(status == napi_ok);
napi_valuetype types[1];
status = napi_typeof(env, args[0], types);
assert(status == napi_ok);
assert(argc == 1 && types[0] == napi_object);
if (argc == 1 && types[0] == napi_object) {
napi_value value;
status = napi_get_named_property(env, args[0], "map", &value);
assert(status == napi_ok);
status = napi_get_named_property(env, args[0], "operand", &value);
assert(status == napi_ok);
status = napi_get_named_property(env, args[0], "data", &value);
assert(status == napi_ok);
status = napi_get_named_property(env, args[0], "reduce", &value);
assert(status == napi_ok);
}
return NULL;
}
static napi_value CallWithTypedarray(napi_env env, napi_callback_info info) {
napi_status status;
size_t argc = 1;
napi_value args[1];
status = napi_get_cb_info(env, info, &argc, args, NULL, NULL);
assert(status == napi_ok);
bool is_typedarray = false;
status = napi_is_typedarray(env, args[0], &is_typedarray);
assert(status == napi_ok);
assert(is_typedarray);
if (is_typedarray) {
napi_typedarray_type type;
napi_value input_buffer;
size_t byte_offset = 0;
size_t length = 0;
status = napi_get_typedarray_info(env, args[0], &type, &length,
NULL, &input_buffer, &byte_offset);
assert(status == napi_ok);
assert(length > 0);
void* data = NULL;
size_t byte_length = 0;
status = napi_get_arraybuffer_info(env,
input_buffer, &data, &byte_length);
assert(status == napi_ok);
uint32_t* input_integers = (uint32_t*)((uint8_t*)(data) + byte_offset);
assert(input_integers);
}
return NULL;
}
static napi_value CallWithArguments(napi_env env, napi_callback_info info) {
napi_status status;
size_t argc = 1;
napi_value args[1000];
// Get the length
status = napi_get_cb_info(env, info, &argc, NULL, NULL, NULL);
assert(status == napi_ok);
status = napi_get_cb_info(env, info, &argc, args, NULL, NULL);
assert(status == napi_ok);
assert(argc <= 1000);
napi_valuetype types[1];
status = napi_typeof(env, args[0], types);
assert(status == napi_ok);
assert(argc > 1 && types[0] == napi_number);
if (argc > 1 && types[0] == napi_number) {
uint32_t loop = 0;
status = napi_get_value_uint32(env, args[0], &loop);
assert(status == napi_ok);
uint32_t i;
for (i = 1; i < loop; ++i) {
assert(i < argc);
status = napi_typeof(env, args[i], types);
assert(status == napi_ok);
assert(types[0] == napi_number);
uint32_t value = 0;
status = napi_get_value_uint32(env, args[i], &value);
assert(status == napi_ok);
}
}
return NULL;
}
#define EXPORT_FUNC(env, exports, name, func) \
do { \
napi_status status; \
napi_value js_func; \
status = napi_create_function((env), \
(name), \
NAPI_AUTO_LENGTH, \
(func), \
NULL, \
&js_func); \
assert(status == napi_ok); \
status = napi_set_named_property((env), \
(exports), \
(name), \
js_func); \
assert(status == napi_ok); \
} while (0);
NAPI_MODULE_INIT() {
EXPORT_FUNC(env, exports, "callWithString", CallWithString);
EXPORT_FUNC(env, exports, "callWithLongString", CallWithString);
EXPORT_FUNC(env, exports, "callWithArray", CallWithArray);
EXPORT_FUNC(env, exports, "callWithLargeArray", CallWithArray);
EXPORT_FUNC(env, exports, "callWithHugeArray", CallWithArray);
EXPORT_FUNC(env, exports, "callWithNumber", CallWithNumber);
EXPORT_FUNC(env, exports, "callWithObject", CallWithObject);
EXPORT_FUNC(env, exports, "callWithTypedarray", CallWithTypedarray);
EXPORT_FUNC(env, exports, "callWith10Numbers", CallWithArguments);
EXPORT_FUNC(env, exports, "callWith100Numbers", CallWithArguments);
EXPORT_FUNC(env, exports, "callWith1000Numbers", CallWithArguments);
return exports;
}