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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	js_stream.cc	Lines:	97	112	86.6 %
Date:	2022-09-21 04:23:13	Branches:	37	80	46.2 %


#include "js_stream.h"

#include "async_wrap.h"
#include "env-inl.h"
#include "node_errors.h"
#include "stream_base-inl.h"
#include "util-inl.h"
#include "v8.h"

namespace node {

using errors::TryCatchScope;

using v8::Array;
using v8::Context;
using v8::FunctionCallbackInfo;
using v8::FunctionTemplate;
using v8::HandleScope;
using v8::Int32;
using v8::Isolate;
using v8::Local;
using v8::Object;
using v8::Value;


JSStream::JSStream(Environment* env, Local<Object> obj)
    : AsyncWrap(env, obj, AsyncWrap::PROVIDER_JSSTREAM),
      StreamBase(env) {
  MakeWeak();
  StreamBase::AttachToObject(obj);
}


AsyncWrap* JSStream::GetAsyncWrap() {
  return static_cast<AsyncWrap*>(this);
}


bool JSStream::IsAlive() {
  return true;
}


bool JSStream::IsClosing() {
  HandleScope scope(env()->isolate());
  Context::Scope context_scope(env()->context());
  TryCatchScope try_catch(env());
  Local<Value> value;
  if (!MakeCallback(env()->isclosing_string(), 0, nullptr).ToLocal(&value)) {
    if (try_catch.HasCaught() && !try_catch.HasTerminated())
      errors::TriggerUncaughtException(env()->isolate(), try_catch);
    return true;
  }
  return value->IsTrue();
}


int JSStream::ReadStart() {
  HandleScope scope(env()->isolate());
  Context::Scope context_scope(env()->context());
  TryCatchScope try_catch(env());
  Local<Value> value;
  int value_int = UV_EPROTO;
  if (!MakeCallback(env()->onreadstart_string(), 0, nullptr).ToLocal(&value) ||
      !value->Int32Value(env()->context()).To(&value_int)) {
    if (try_catch.HasCaught() && !try_catch.HasTerminated())
      errors::TriggerUncaughtException(env()->isolate(), try_catch);
  }
  return value_int;
}


int JSStream::ReadStop() {
  HandleScope scope(env()->isolate());
  Context::Scope context_scope(env()->context());
  TryCatchScope try_catch(env());
  Local<Value> value;
  int value_int = UV_EPROTO;
  if (!MakeCallback(env()->onreadstop_string(), 0, nullptr).ToLocal(&value) ||
      !value->Int32Value(env()->context()).To(&value_int)) {
    if (try_catch.HasCaught() && !try_catch.HasTerminated())
      errors::TriggerUncaughtException(env()->isolate(), try_catch);
  }
  return value_int;
}


int JSStream::DoShutdown(ShutdownWrap* req_wrap) {
  HandleScope scope(env()->isolate());
  Context::Scope context_scope(env()->context());

  Local<Value> argv[] = {
    req_wrap->object()
  };

  TryCatchScope try_catch(env());
  Local<Value> value;
  int value_int = UV_EPROTO;
  if (!MakeCallback(env()->onshutdown_string(),
                    arraysize(argv),
                    argv).ToLocal(&value) ||
      !value->Int32Value(env()->context()).To(&value_int)) {
    if (try_catch.HasCaught() && !try_catch.HasTerminated())
      errors::TriggerUncaughtException(env()->isolate(), try_catch);
  }
  return value_int;
}


int JSStream::DoWrite(WriteWrap* w,
                      uv_buf_t* bufs,
                      size_t count,
                      uv_stream_t* send_handle) {
  CHECK_NULL(send_handle);

  HandleScope scope(env()->isolate());
  Context::Scope context_scope(env()->context());

  MaybeStackBuffer<Local<Value>, 16> bufs_arr(count);
  for (size_t i = 0; i < count; i++) {
    bufs_arr[i] =
        Buffer::Copy(env(), bufs[i].base, bufs[i].len).ToLocalChecked();
  }

  Local<Value> argv[] = {
    w->object(),
    Array::New(env()->isolate(), bufs_arr.out(), count)
  };

  TryCatchScope try_catch(env());
  Local<Value> value;
  int value_int = UV_EPROTO;
  if (!MakeCallback(env()->onwrite_string(),
                    arraysize(argv),
                    argv).ToLocal(&value) ||
      !value->Int32Value(env()->context()).To(&value_int)) {
    if (try_catch.HasCaught() && !try_catch.HasTerminated())
      errors::TriggerUncaughtException(env()->isolate(), try_catch);
  }
  return value_int;
}


void JSStream::New(const FunctionCallbackInfo<Value>& args) {
  // This constructor should not be exposed to public javascript.
  // Therefore we assert that we are not trying to call this as a
  // normal function.
  CHECK(args.IsConstructCall());
  Environment* env = Environment::GetCurrent(args);
  new JSStream(env, args.This());
}


template <class Wrap>
void JSStream::Finish(const FunctionCallbackInfo<Value>& args) {
  CHECK(args[0]->IsObject());
  Wrap* w = static_cast<Wrap*>(StreamReq::FromObject(args[0].As<Object>()));

  CHECK(args[1]->IsInt32());
  w->Done(args[1].As<Int32>()->Value());
}


void JSStream::ReadBuffer(const FunctionCallbackInfo<Value>& args) {
  JSStream* wrap;
  ASSIGN_OR_RETURN_UNWRAP(&wrap, args.Holder());

  ArrayBufferViewContents<char> buffer(args[0]);
  const char* data = buffer.data();
  int len = buffer.length();

  // Repeatedly ask the stream's owner for memory, copy the data that we
  // just read from JS into those buffers and emit them as reads.
  while (len != 0) {
    uv_buf_t buf = wrap->EmitAlloc(len);
    ssize_t avail = len;
    if (static_cast<ssize_t>(buf.len) < avail)
      avail = buf.len;

    memcpy(buf.base, data, avail);
    data += avail;
    len -= static_cast<int>(avail);
    wrap->EmitRead(avail, buf);
  }
}


void JSStream::EmitEOF(const FunctionCallbackInfo<Value>& args) {
  JSStream* wrap;
  ASSIGN_OR_RETURN_UNWRAP(&wrap, args.Holder());

  wrap->EmitRead(UV_EOF);
}


void JSStream::Initialize(Local<Object> target,
                          Local<Value> unused,
                          Local<Context> context,
                          void* priv) {
  Environment* env = Environment::GetCurrent(context);
  Isolate* isolate = env->isolate();

  Local<FunctionTemplate> t = NewFunctionTemplate(isolate, New);
  t->InstanceTemplate()
    ->SetInternalFieldCount(StreamBase::kInternalFieldCount);
  t->Inherit(AsyncWrap::GetConstructorTemplate(env));

  SetProtoMethod(isolate, t, "finishWrite", Finish<WriteWrap>);
  SetProtoMethod(isolate, t, "finishShutdown", Finish<ShutdownWrap>);
  SetProtoMethod(isolate, t, "readBuffer", ReadBuffer);
  SetProtoMethod(isolate, t, "emitEOF", EmitEOF);

  StreamBase::AddMethods(env, t);
  SetConstructorFunction(context, target, "JSStream", t);
}

}  // namespace node

NODE_MODULE_CONTEXT_AWARE_INTERNAL(js_stream, node::JSStream::Initialize)


Generated by: GCOVR (Version 4.2)

Line	Branch	Exec	Source
1			#include "js_stream.h"
2
3			#include "async_wrap.h"
4			#include "env-inl.h"
5			#include "node_errors.h"
6			#include "stream_base-inl.h"
7			#include "util-inl.h"
8			#include "v8.h"
9
10			namespace node {
11
12			using errors::TryCatchScope;
13
14			using v8::Array;
15			using v8::Context;
16			using v8::FunctionCallbackInfo;
17			using v8::FunctionTemplate;
18			using v8::HandleScope;
19			using v8::Int32;
20			using v8::Isolate;
21			using v8::Local;
22			using v8::Object;
23			using v8::Value;
24
25
26		10654	JSStream::JSStream(Environment* env, Local<Object> obj)
27			: AsyncWrap(env, obj, AsyncWrap::PROVIDER_JSSTREAM),
28		10654	StreamBase(env) {
29		10654	MakeWeak();
30		10654	StreamBase::AttachToObject(obj);
31		10654	}
32
33
34		11522	AsyncWrap* JSStream::GetAsyncWrap() {
35		11522	return static_cast<AsyncWrap*>(this);
36			}
37
38
39		10679	bool JSStream::IsAlive() {
40		10679	return true;
41			}
42
43
44			bool JSStream::IsClosing() {
45			HandleScope scope(env()->isolate());
46			Context::Scope context_scope(env()->context());
47			TryCatchScope try_catch(env());
48			Local<Value> value;
49			if (!MakeCallback(env()->isclosing_string(), 0, nullptr).ToLocal(&value)) {
50			if (try_catch.HasCaught() && !try_catch.HasTerminated())
51			errors::TriggerUncaughtException(env()->isolate(), try_catch);
52			return true;
53			}
54			return value->IsTrue();
55			}
56
57
58		10824	int JSStream::ReadStart() {
59		21648	HandleScope scope(env()->isolate());
60		10824	Context::Scope context_scope(env()->context());
61		10824	TryCatchScope try_catch(env());
62			Local<Value> value;
63		10824	int value_int = UV_EPROTO;
64	✓✗	32472	if (!MakeCallback(env()->onreadstart_string(), 0, nullptr).ToLocal(&value) \|\|
65	✗✓✗✓	32472	!value->Int32Value(env()->context()).To(&value_int)) {
66			if (try_catch.HasCaught() && !try_catch.HasTerminated())
67			errors::TriggerUncaughtException(env()->isolate(), try_catch);
68			}
69		10824	return value_int;
70			}
71
72
73		193	int JSStream::ReadStop() {
74		386	HandleScope scope(env()->isolate());
75		193	Context::Scope context_scope(env()->context());
76		193	TryCatchScope try_catch(env());
77			Local<Value> value;
78		193	int value_int = UV_EPROTO;
79	✓✓	578	if (!MakeCallback(env()->onreadstop_string(), 0, nullptr).ToLocal(&value) \|\|
80	✗✓✓✓	577	!value->Int32Value(env()->context()).To(&value_int)) {
81	✗✓✗✗ ✗✓	1	if (try_catch.HasCaught() && !try_catch.HasTerminated())
82			errors::TriggerUncaughtException(env()->isolate(), try_catch);
83			}
84		193	return value_int;
85			}
86
87
88		13	int JSStream::DoShutdown(ShutdownWrap* req_wrap) {
89		26	HandleScope scope(env()->isolate());
90		13	Context::Scope context_scope(env()->context());
91
92			Local<Value> argv[] = {
93			req_wrap->object()
94		13	};
95
96		13	TryCatchScope try_catch(env());
97			Local<Value> value;
98		13	int value_int = UV_EPROTO;
99		26	if (!MakeCallback(env()->onshutdown_string(),
100		13	arraysize(argv),
101	✓✗	39	argv).ToLocal(&value) \|\|
102	✗✓✗✓	39	!value->Int32Value(env()->context()).To(&value_int)) {
103			if (try_catch.HasCaught() && !try_catch.HasTerminated())
104			errors::TriggerUncaughtException(env()->isolate(), try_catch);
105			}
106		13	return value_int;
107			}
108
109
110		822	int JSStream::DoWrite(WriteWrap* w,
111			uv_buf_t* bufs,
112			size_t count,
113			uv_stream_t* send_handle) {
114	✗✓	822	CHECK_NULL(send_handle);
115
116		1643	HandleScope scope(env()->isolate());
117		822	Context::Scope context_scope(env()->context());
118
119		1643	MaybeStackBuffer<Local<Value>, 16> bufs_arr(count);
120	✓✓	2067	for (size_t i = 0; i < count; i++) {
121		1245	bufs_arr[i] =
122		2490	Buffer::Copy(env(), bufs[i].base, bufs[i].len).ToLocalChecked();
123			}
124
125			Local<Value> argv[] = {
126			w->object(),
127			Array::New(env()->isolate(), bufs_arr.out(), count)
128		1644	};
129
130		822	TryCatchScope try_catch(env());
131			Local<Value> value;
132		822	int value_int = UV_EPROTO;
133		1644	if (!MakeCallback(env()->onwrite_string(),
134		822	arraysize(argv),
135	✓✓	2391	argv).ToLocal(&value) \|\|
136	✗✓✓✓	2316	!value->Int32Value(env()->context()).To(&value_int)) {
137	✓✓✓✗ ✓✓	75	if (try_catch.HasCaught() && !try_catch.HasTerminated())
138		2	errors::TriggerUncaughtException(env()->isolate(), try_catch);
139			}
140		821	return value_int;
141			}
142
143
144		10654	void JSStream::New(const FunctionCallbackInfo<Value>& args) {
145			// This constructor should not be exposed to public javascript.
146			// Therefore we assert that we are not trying to call this as a
147			// normal function.
148	✗✓	10654	CHECK(args.IsConstructCall());
149		10654	Environment* env = Environment::GetCurrent(args);
150		10654	new JSStream(env, args.This());
151		10654	}
152
153
154			template <class Wrap>
155	✓✗	1504	void JSStream::Finish(const FunctionCallbackInfo<Value>& args) {
156	✗✓	1504	CHECK(args[0]->IsObject());
157	✓✗	3008	Wrap* w = static_cast<Wrap*>(StreamReq::FromObject(args[0].As<Object>()));
158
159	✗✓	1504	CHECK(args[1]->IsInt32());
160	✓✗	4512	w->Done(args[1].As<Int32>()->Value());
161		1504	}
162
163
164		1034	void JSStream::ReadBuffer(const FunctionCallbackInfo<Value>& args) {
165			JSStream* wrap;
166	✗✓	1034	ASSIGN_OR_RETURN_UNWRAP(&wrap, args.Holder());
167
168		1034	ArrayBufferViewContents<char> buffer(args[0]);
169		1034	const char* data = buffer.data();
170		1034	int len = buffer.length();
171
172			// Repeatedly ask the stream's owner for memory, copy the data that we
173			// just read from JS into those buffers and emit them as reads.
174	✓✓	2067	while (len != 0) {
175		1034	uv_buf_t buf = wrap->EmitAlloc(len);
176		1034	ssize_t avail = len;
177	✗✓	1034	if (static_cast<ssize_t>(buf.len) < avail)
178			avail = buf.len;
179
180		1034	memcpy(buf.base, data, avail);
181		1034	data += avail;
182		1034	len -= static_cast<int>(avail);
183		1034	wrap->EmitRead(avail, buf);
184			}
185			}
186
187
188		12	void JSStream::EmitEOF(const FunctionCallbackInfo<Value>& args) {
189			JSStream* wrap;
190	✗✓	12	ASSIGN_OR_RETURN_UNWRAP(&wrap, args.Holder());
191
192		12	wrap->EmitRead(UV_EOF);
193			}
194
195
196		596	void JSStream::Initialize(Local<Object> target,
197			Local<Value> unused,
198			Local<Context> context,
199			void* priv) {
200		596	Environment* env = Environment::GetCurrent(context);
201		596	Isolate* isolate = env->isolate();
202
203		596	Local<FunctionTemplate> t = NewFunctionTemplate(isolate, New);
204		1192	t->InstanceTemplate()
205		596	->SetInternalFieldCount(StreamBase::kInternalFieldCount);
206		596	t->Inherit(AsyncWrap::GetConstructorTemplate(env));
207
208		596	SetProtoMethod(isolate, t, "finishWrite", Finish<WriteWrap>);
209		596	SetProtoMethod(isolate, t, "finishShutdown", Finish<ShutdownWrap>);
210		596	SetProtoMethod(isolate, t, "readBuffer", ReadBuffer);
211		596	SetProtoMethod(isolate, t, "emitEOF", EmitEOF);
212
213		596	StreamBase::AddMethods(env, t);
214		596	SetConstructorFunction(context, target, "JSStream", t);
215		596	}
216
217			} // namespace node
218
219		5597	NODE_MODULE_CONTEXT_AWARE_INTERNAL(js_stream, node::JSStream::Initialize)