GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: uv.cc Lines: 46 48 95.8 %
Date: 2021-09-28 04:12:53 Branches: 14 20 70.0 %

Line Branch Exec Source
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// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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#include "uv.h"
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#include "env-inl.h"
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#include "node.h"
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#include "node_external_reference.h"
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#include "node_process-inl.h"
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namespace node {
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namespace per_process {
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struct UVError {
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  int value;
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  const char* name;
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  const char* message;
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};
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// We only expand the macro once here to reduce the amount of code
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// generated.
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static const struct UVError uv_errors_map[] = {
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#define V(name, message) {UV_##name, #name, message},
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    UV_ERRNO_MAP(V)
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#undef V
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};
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}  // namespace per_process
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namespace uv {
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using v8::Array;
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using v8::Context;
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using v8::DontDelete;
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using v8::FunctionCallbackInfo;
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using v8::Integer;
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using v8::Isolate;
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using v8::Local;
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using v8::Map;
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using v8::Object;
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using v8::PropertyAttribute;
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using v8::ReadOnly;
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using v8::String;
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using v8::Value;
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void ErrName(const FunctionCallbackInfo<Value>& args) {
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  Environment* env = Environment::GetCurrent(args);
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  if (env->options()->pending_deprecation && env->EmitErrNameWarning()) {
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    if (ProcessEmitDeprecationWarning(
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        env,
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        "Directly calling process.binding('uv').errname(<val>) is being"
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        " deprecated. "
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        "Please make sure to use util.getSystemErrorName() instead.",
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        "DEP0119").IsNothing())
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    return;
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  }
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  int err;
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  if (!args[0]->Int32Value(env->context()).To(&err)) return;
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  CHECK_LT(err, 0);
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  const char* name = uv_err_name(err);
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  args.GetReturnValue().Set(OneByteString(env->isolate(), name));
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}
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void GetErrMap(const FunctionCallbackInfo<Value>& args) {
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  Environment* env = Environment::GetCurrent(args);
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  Isolate* isolate = env->isolate();
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  Local<Context> context = env->context();
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  // This can't return a SafeMap, because the uv binding can be referenced
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  // by user code by using `process.binding('uv').getErrorMap()`:
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  Local<Map> err_map = Map::New(isolate);
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  size_t errors_len = arraysize(per_process::uv_errors_map);
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  for (size_t i = 0; i < errors_len; ++i) {
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    const auto& error = per_process::uv_errors_map[i];
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    Local<Value> arr[] = {OneByteString(isolate, error.name),
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                          OneByteString(isolate, error.message)};
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    if (err_map
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            ->Set(context,
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                  Integer::New(isolate, error.value),
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                  Array::New(isolate, arr, arraysize(arr)))
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            .IsEmpty()) {
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      return;
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    }
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  }
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  args.GetReturnValue().Set(err_map);
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}
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void Initialize(Local<Object> target,
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                Local<Value> unused,
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                Local<Context> context,
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                void* priv) {
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  Environment* env = Environment::GetCurrent(context);
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  Isolate* isolate = env->isolate();
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  env->SetConstructorFunction(
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      target,
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      "errname",
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      env->NewFunctionTemplate(ErrName));
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  // TODO(joyeecheung): This should be deprecated in user land in favor of
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  // `util.getSystemErrorName(err)`.
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  PropertyAttribute attributes =
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      static_cast<PropertyAttribute>(ReadOnly | DontDelete);
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  size_t errors_len = arraysize(per_process::uv_errors_map);
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  const std::string prefix = "UV_";
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  for (size_t i = 0; i < errors_len; ++i) {
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    const auto& error = per_process::uv_errors_map[i];
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    const std::string prefixed_name = prefix + error.name;
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    Local<String> name = OneByteString(isolate, prefixed_name.c_str());
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    Local<Integer> value = Integer::New(isolate, error.value);
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    target->DefineOwnProperty(context, name, value, attributes).Check();
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  }
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  env->SetMethod(target, "getErrorMap", GetErrMap);
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}
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void RegisterExternalReferences(ExternalReferenceRegistry* registry) {
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  registry->Register(ErrName);
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  registry->Register(GetErrMap);
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}
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}  // namespace uv
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}  // namespace node
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NODE_MODULE_CONTEXT_AWARE_INTERNAL(uv, node::uv::Initialize)
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NODE_MODULE_EXTERNAL_REFERENCE(uv, node::uv::RegisterExternalReferences)