本文整理汇总了C++中nan::TryCatch类的典型用法代码示例。如果您正苦于以下问题：C++ TryCatch类的具体用法？C++ TryCatch怎么用？C++ TryCatch使用的例子？那么, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了TryCatch类的12个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: EIO_AfterGetConnection
void ConnectionPool::EIO_AfterGetConnection(uv_work_t* req) {
Nan::HandleScope scope;
ConnectionPoolBaton* baton = CONTAINER_OF(req, ConnectionPoolBaton, work_req);
Local<Value> argv[2];
if (baton->error) {
argv[0] = Nan::Error(baton->error->c_str());
argv[1] = Nan::Undefined();
} else {
argv[0] = Nan::Undefined();
Local<FunctionTemplate> ft = Nan::New(Connection::s_ct);
Local<Object> connection = ft->GetFunction()->NewInstance();
(Nan::ObjectWrap::Unwrap<Connection>(connection))->setConnection(
baton->connectionPool->getEnvironment(),
baton->connectionPool,
baton->connection);
argv[1] = connection;
}
Nan::TryCatch tryCatch;
baton->callback->Call(2, argv);
delete baton;
if (tryCatch.HasCaught()) {
Nan::FatalException(tryCatch);
}
}示例2: Async_AfterWrite
void ILob::Async_AfterWrite(uv_work_t *req)
{
Nan::HandleScope scope;
LobBaton *lobBaton = (LobBaton *)req->data;
ILob *iLob = lobBaton->iLob;
Nan::TryCatch tc;
Local<Value> argv[1];
iLob->state_ = INACTIVE; // mark Lob as inactive as back in main thread
if(!(lobBaton->error).empty())
argv[0] = v8::Exception::Error(Nan::New<v8::String>((lobBaton->error).c_str()).ToLocalChecked());
else
argv[0] = Nan::Undefined();
Local<Function> callback = Nan::New<Function>(lobBaton->cb);
delete lobBaton;
Nan::MakeCallback(Nan::GetCurrentContext()->Global(), callback, 1, argv);
if(tc.HasCaught())
{
Nan::FatalException(tc);
}
}示例3: Async_AfterClose
/*
DESCRIPTION
Callback function of close method
PARAMETERS:
UV queue work block
*/
void ILob::Async_AfterClose(uv_work_t *req)
{
Nan::HandleScope scope;
LobBaton *lobBaton = ( LobBaton * ) req->data;
ILob *iLob = lobBaton->iLob;
Nan::TryCatch tc;
if ( !lobBaton->errOnActiveOrInvalid )
{
iLob->state_ = NJS_INACTIVE;
}
Local<Value> argv[1];
if( !lobBaton->error.empty () )
argv[0] = v8::Exception::Error(
Nan::New<v8::String> ( lobBaton->error ).ToLocalChecked () );
else
{
argv[0] = Nan::Undefined ();
iLob->cleanupNJS ();
}
Local<Function> callback = Nan::New<Function> ( lobBaton->cb );
delete lobBaton;
Nan::MakeCallback( Nan::GetCurrentContext()->Global(),
callback, 1, argv );
if( tc.HasCaught () )
{
Nan::FatalException ( tc );
}
}示例4: Async_AfterTerminate
/*
DESCRIPTION
Callback function of terminate
PARAMETERS:
UV queue work block
*/
void Pool::Async_AfterTerminate(uv_work_t *req)
{
Nan::HandleScope scope;
poolBaton *terminateBaton = (poolBaton*)req->data;
Nan::TryCatch tc;
Local<Value> argv[1];
if(!(terminateBaton->error).empty())
{
argv[0] = v8::Exception::Error(Nan::New<v8::String>((terminateBaton->error).c_str()).ToLocalChecked());
}
else
{
argv[0] = Nan::Undefined();
// pool is not valid after terminate succeeds.
terminateBaton-> njspool-> isValid_ = false;
}
Local<Function> callback = Nan::New<Function>(terminateBaton->cb);
delete terminateBaton;
Nan::MakeCallback( Nan::GetCurrentContext()->Global(),
callback, 1, argv );
if(tc.HasCaught())
{
Nan::FatalException(tc);
}
}示例5: Async_AfterGetConnection
/*
DESCRIPTION
Callback function of Get Connection method
PARAMETERS:
UV queue work block
status - expected to be non-zero.
NOTES:
Connection handle is formed and handed over to JS.
*/
void Pool::Async_AfterGetConnection(uv_work_t *req)
{
Nan::HandleScope scope;
poolBaton *connBaton = (poolBaton*)req->data;
Nan::TryCatch tc;
Local<Value> argv[2];
if(!(connBaton->error).empty())
{
argv[0] = v8::Exception::Error(Nan::New<v8::String>((connBaton->error).c_str()).ToLocalChecked());
argv[1] = Nan::Undefined();
}
else
{
argv[0] = Nan::Undefined();
Local<FunctionTemplate> lft = Nan::New(Connection::connectionTemplate_s);
Local<Object> connection = lft->GetFunction()-> NewInstance();
(Nan::ObjectWrap::Unwrap<Connection> (connection))->
setConnection( connBaton->dpiconn,
connBaton->njspool->oracledb_ );
argv[1] = connection;
}
Local<Function> callback = Nan::New<Function>(connBaton->cb);
delete connBaton;
Nan::MakeCallback( Nan::GetCurrentContext()->Global(),
callback, 2, argv );
if(tc.HasCaught())
{
Nan::FatalException(tc);
}
}示例6: Exception
inline v8::Local<v8::Object> node::Function::construct(v8::Isolate* isolate, const v8::Local<v8::Function> &function, size_t argc, const v8::Local<v8::Value> arguments[]) {
Nan::TryCatch trycatch;
auto result = Nan::NewInstance(function, (int)argc, const_cast<v8::Local<v8::Value>*>(arguments));
if (trycatch.HasCaught()) {
throw node::Exception(isolate, trycatch.Exception());
}
return result.ToLocalChecked();
}示例7: Async_AfterRead
void ILob::Async_AfterRead(uv_work_t *req)
{
Nan::HandleScope scope;
LobBaton *lobBaton = (LobBaton *)req->data;
ILob *iLob = lobBaton->iLob;
Nan::TryCatch tc;
Local<Value> argv[2];
if ( !lobBaton->errOnActiveOrInvalid )
{
iLob->state_ = NJS_INACTIVE; // mark Lob as inactive as back in main thread
}
if(!(lobBaton->error).empty())
{
argv[0] = v8::Exception::Error(
Nan::New<v8::String>(lobBaton->error).ToLocalChecked());
argv[1] = Nan::Undefined();
}
else
{
argv[0] = Nan::Undefined();
if (iLob->amountRead_)
{
if (iLob->dpiLobType_ == DpiClob)
{
Local<Value> str = Nan::New<v8::String>((char *)iLob->buf_,
iLob->amountRead_).ToLocalChecked();
argv[1] = str;
}
else
{
// Blobs use buffers rather than strings
// TODO: We could use NewBuffer to save memory and CPU, but it gets the ownership of buffer to itself (behaviour changed in Nan 2.0)
Local<Value> buffer = Nan::CopyBuffer((char *)iLob->buf_,
iLob->amountRead_).ToLocalChecked();
argv[1] = buffer;
}
}
else
argv[1] = Nan::Null();
}
Local<Function> callback = Nan::New<Function>(lobBaton->cb);
delete lobBaton;
Nan::MakeCallback(Nan::GetCurrentContext()->Global(), callback, 2, argv);
if(tc.HasCaught())
{
Nan::FatalException(tc);
}
}示例8: Async_AfterGetRows
/*
DESCRIPTION
Callback function of GetRows method
PARAMETERS:
req - UV queue work block
*/
void ResultSet::Async_AfterGetRows(uv_work_t *req)
{
Nan::HandleScope scope;
rsBaton *getRowsBaton = (rsBaton*)req->data;
Nan::TryCatch tc;
Local<Value> argv[2];
if(!(getRowsBaton->error).empty())
{
argv[0] = v8::Exception::Error(
Nan::New<v8::String>(getRowsBaton->error).ToLocalChecked());
argv[1] = Nan::Undefined();
}
else
{
argv[0] = Nan::Undefined();
eBaton* ebaton = getRowsBaton->ebaton;
ebaton->outFormat = getRowsBaton->njsRS->outFormat_;
Local<Value> rowsArray = Nan::New<v8::Array>(0),
rowsArrayValue = Nan::Null();
if(ebaton->rowsFetched)
{
rowsArray = Connection::GetRows(ebaton);
if(!(ebaton->error).empty())
{
argv[0] = v8::Exception::Error(
Nan::New<v8::String>(ebaton->error).ToLocalChecked());
argv[1] = Nan::Undefined();
goto exitAsyncAfterGetRows;
}
rowsArrayValue = Local<Array>::Cast(rowsArray)->Get(0);
}
argv[1] = (getRowsBaton->fetchMultiple) ? rowsArray : rowsArrayValue;
}
exitAsyncAfterGetRows:
if(!getRowsBaton->errOnActiveOrInvalid)
{
getRowsBaton->njsRS->state_ = NJS_INACTIVE;
}
Local<Function> callback = Nan::New(getRowsBaton->ebaton->cb);
delete getRowsBaton;
Nan::MakeCallback(Nan::GetCurrentContext()->Global(),
callback, 2, argv);
if(tc.HasCaught())
{
Nan::FatalException(tc);
}
}示例9: Async_AfterClose
/*
DESCRIPTION
Callback function of close
PARAMETERS:
req - UV queue work block
*/
void ResultSet::Async_AfterClose(uv_work_t *req)
{
Nan::HandleScope scope;
rsBaton *closeBaton = (rsBaton*)req->data;
Nan::TryCatch tc;
Local<Value> argv[1];
if(!(closeBaton->error).empty())
{
argv[0] = v8::Exception::Error(
Nan::New<v8::String>(closeBaton->error).ToLocalChecked());
if(!closeBaton->errOnActiveOrInvalid)
{
closeBaton->njsRS->state_ = NJS_INACTIVE;
}
}
else
{
argv[0] = Nan::Undefined();
// resultset is not valid after close succeeds.
closeBaton-> njsRS-> state_ = NJS_INVALID;
}
/*
* When we close the resultSet, we have to clear the reference of
* its parent.
*/
closeBaton->njsRS->jsParent_.Reset ();
Local<Function> callback = Nan::New(closeBaton->ebaton->cb);
delete closeBaton;
Nan::MakeCallback( Nan::GetCurrentContext()->Global(), callback, 1, argv );
if(tc.HasCaught())
{
Nan::FatalException(tc);
}
}示例10: EIO_AfterClose
void Connection::EIO_AfterClose(uv_work_t* req) {
Nan::HandleScope scope;
ConnectionBaton* baton = CONTAINER_OF(req, ConnectionBaton, work_req);
baton->connection->Unref();
Nan::TryCatch tryCatch;
if (baton->callback != NULL) {
Local<Value> argv[2];
if (baton->error) {
argv[0] = Nan::Error(baton->error->c_str());
argv[1] = Nan::Undefined();
} else {
argv[0] = Nan::Undefined();
argv[1] = Nan::Undefined();
}
baton->callback->Call(2, argv);
}
delete baton;
if (tryCatch.HasCaught()) {
Nan::FatalException(tryCatch);
}
}示例11: EIO_AfterCallJs
void EIO_AfterCallJs(uv_work_t* req, int status) {
#else
void EIO_AfterCallJs(uv_work_t* req) {
#endif
DynamicProxyData* dynamicProxyData = static_cast<DynamicProxyData*>(req->data);
if(!dynamicProxyDataVerify(dynamicProxyData)) {
return;
}
dynamicProxyData->result = NULL;
JNIEnv* env;
int ret = dynamicProxyData->java->getJvm()->GetEnv((void**)&env, JNI_BEST_VERSION);
if (ret != JNI_OK) {
dynamicProxyData->throwableClass = "java/lang/IllegalStateException";
dynamicProxyData->throwableMessage = "Could not retrieve JNIEnv: jvm->GetEnv returned " + to_string<int>(ret);
dynamicProxyData->done = DYNAMIC_PROXY_JS_ERROR;
return;
}
Nan::HandleScope scope;
v8::Array* v8Args;
v8::Function* fn;
v8::Handle<v8::Value>* argv;
int argc;
int i;
v8::Local<v8::Value> v8Result;
jobject javaResult;
v8::Local<v8::Object> dynamicProxyDataFunctions = Nan::New(dynamicProxyData->functions);
v8::Local<v8::Value> fnObj = dynamicProxyDataFunctions->Get(Nan::New<v8::String>(dynamicProxyData->methodName.c_str()).ToLocalChecked());
if(fnObj->IsUndefined() || fnObj->IsNull()) {
dynamicProxyData->throwableClass = "java/lang/NoSuchMethodError";
dynamicProxyData->throwableMessage = "Could not find js function " + dynamicProxyData->methodName;
dynamicProxyData->done = DYNAMIC_PROXY_JS_ERROR;
return;
}
if(!fnObj->IsFunction()) {
dynamicProxyData->throwableClass = "java/lang/IllegalStateException";
dynamicProxyData->throwableMessage = dynamicProxyData->methodName + " is not a function";
dynamicProxyData->done = DYNAMIC_PROXY_JS_ERROR;
return;
}
fn = v8::Function::Cast(*fnObj);
if(dynamicProxyData->args) {
v8Args = v8::Array::Cast(*javaArrayToV8(dynamicProxyData->java, env, dynamicProxyData->args));
argc = v8Args->Length();
} else {
argc = 0;
}
argv = new v8::Handle<v8::Value>[argc];
for(i=0; i<argc; i++) {
argv[i] = v8Args->Get(i);
}
Nan::TryCatch tryCatch;
tryCatch.SetCaptureMessage(true);
v8Result = fn->Call(dynamicProxyDataFunctions, argc, argv);
delete[] argv;
if (tryCatch.HasCaught()) {
dynamicProxyData->throwableClass = "node/NodeJsException";
v8::String::Utf8Value message(tryCatch.Message()->Get());
dynamicProxyData->throwableMessage = std::string(*message);
tryCatch.Reset();
dynamicProxyData->done = DYNAMIC_PROXY_JS_ERROR;
return;
}
if(!dynamicProxyDataVerify(dynamicProxyData)) {
return;
}
javaResult = v8ToJava(env, v8Result);
if(javaResult == NULL) {
dynamicProxyData->result = NULL;
} else {
dynamicProxyData->result = env->NewGlobalRef(javaResult);
}
dynamicProxyData->done = true;
}示例12: jsEval
/*
* Tcl proc to embed Javascript
*/
int jsEval(
ClientData clientData,
Tcl_Interp *interp,
int objc,
Tcl_Obj *const objv[]
){
v8log("TclBinding::jsEval (interp=%p)\n", interp);
// Get handle to the V8 Isolate for this Tcl interpreter
Isolate* isolate = v8::Isolate::GetCurrent();
assert(isolate != nullptr);
// lock the Isolate for multi-threaded access (not reentrant on its own)
Locker locker(isolate);
// create a bindings map and store it in the current V8 Isolate
TclVariableBindingsMap* varbindings = new TclVariableBindingsMap;
isolate->SetData(0, varbindings);
v8log("jsEval: created new bindings map at %lp\n", (void*)varbindings );
// validate input params
if ( (objc != 3) ) {
std::string msg("usage: jsEval [list of tcl vars to add to v8 context] { javascript }");
Tcl_SetObjResult(interp, Tcl_NewStringObj(msg.c_str(), msg.length()));
return TCL_ERROR;
}
// get the argument list
Tcl_Obj* arglist = objv[1];
if ( (arglist->typePtr == NULL) || strcmp(arglist->typePtr->name, "list") ) {
std::string msg("jsEval: 1st arg not a list");
Tcl_SetObjResult(interp, Tcl_NewStringObj(msg.c_str(), msg.length()));
return TCL_ERROR;
}
// get the JS snippet
char* javascript = Tcl_GetString(objv[2]);
if ( strlen(javascript) == 0 ) {
std::string msg("jsEval: 2nd arg not a string");
Tcl_SetObjResult(interp, Tcl_NewStringObj(msg.c_str(), msg.length()));
return TCL_ERROR;
}
// Create stack-allocated isolate and handle scopes.
Isolate::Scope isolate_scope(isolate);
HandleScope handle_scope(isolate);
// new v8 global template
Handle<ObjectTemplate> global_templ = ObjectTemplate::New(isolate);
// scrum our F18 Interceptors
global_templ->SetNamedPropertyHandler(
&TclVariableBinding::GenericNamedPropertyReader,
&TclVariableBinding::GenericNamedPropertyWriter
);
// Create and Enter a new context for compiling and running the script.
Handle<Context> context = Context::New(isolate, NULL, global_templ);
context->Enter();
int arglistLength;
Tcl_ListObjLength(interp, arglist, &arglistLength);
v8log("arg list length == %d\n", arglistLength);
for ( int i = 0; i < arglistLength; i++ ) {
// get the variable NAME
Tcl_Obj* varName;
Tcl_ListObjIndex(interp, arglist, i, &varName);
char* vn = Tcl_GetString(varName);
v8log("binding %s (idx: %d) to V8\n", vn, i);
// then create a binding and store it
(*varbindings)[vn] = new TclVariableBinding(interp, varName);
}
// Compile
v8log("compiling jsEval'ed script\n");
v8::MaybeLocal<v8::Script> jsSource = v8::Script::Compile(context, Nan::New<String>(javascript).ToLocalChecked());
if (jsSource.IsEmpty()) {
v8log("*** jsSource.IsEmpty()\n");
} else {
// Run
v8log("running jsEval'ed script\n");
Nan::TryCatch tc;
Nan::MaybeLocal<v8::Value> retv = jsSource.ToLocalChecked()->Run();
v8log("done running jsEval'ed script\n");
if ( tc.HasCaught() ) {
// oops, exception raised from V8 while in JS land
Local<Message> msg = tc.Message();
std::string msgtext(*String::Utf8Value(msg->Get()));
v8log("*** caught JS exception: %s\n", msgtext.c_str());
}
TclVariableBindingsMap::const_iterator it;
for (it = varbindings->begin(); it != varbindings->end(); it++) {
TclVariableBinding* vb = it->second;
v8log("reverse mapping of %s (v8: %p) to Tcl...\n", it->first.c_str(), vb->m_v8val);
Tcl_SetVar2Ex(vb->m_interp, it->first.c_str(), NULL, vb->m_tclvar, 0);
//.........这里部分代码省略.........