QJSEngine and SyntaxError ?
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I am using the QJSEngine, I added a global to the object:
QJSValue objGlobal = pobjScriptEng->globalObject();pobjScriptEng is a pointer to an instance of QJSEngine.
I have a map of globals, the map type definition:
std::map<QString, QString> mpGlobals;I iterate through the globals map adding them to the engine:
for( mpGlobals::iterator itr=rmpGlobals.begin(); itr!=rmpGlobals.end(); itr++ ) { QString strName(itr->first); if ( objGlobal.hasProperty(strName) == false ) { QString strData(itr->second); QJSValue result = pobjScriptEng->evaluate(strData); objGlobal.setProperty(strName, result); } }rmpGlobals is a reference to the globals map.
I have a script which includes a reference to a global, the global is called "db" and is a JSON object that contains:
{"db":"test","host":"localhost","usr":"root","pass":"123456"}I added some debug to the loop that calls setProperty and this is whats displayed in the Application Output:
itr->first "db" itr->second "{\"db\":\"test\",\"host\":\"localhost\",\"usr\":\"root\",\"pass\":\"resuocra\"}"The syntax error is coming from the JSON, but why there is nothing wrong with it. I dumped result.toString() to the console and it contains:
SyntaxError: Expected token `,'The script:
function test() { try{ console.info("---------------"); console.info("test(), Line 4"); if ( db === undefined ) { console.info("db is undefined"); return; } if ( typeof db === "object" ) { var mbr; console.info("test(), Line 7"); console.info(db); console.info("test(), Line 9"); for( mbr in db ) { console.info("test(), Line12"); console.info(mbr); console.info("test(), Line14"); } console.info("test(), Line 14"); } console.info("test(), Line 16"); console.info("---------------"); } catch( e ) { console.warn( "test() WARNING: " + e ); } }When run my application and the script is evaluated I see the following in the "Application Output"
2020-04-08 08:21:36.320693+0100 XMLMPAM[3657:59571] [js] --------------- 2020-04-08 08:21:36.320732+0100 XMLMPAM[3657:59571] [js] test(), Line 4 2020-04-08 08:21:36.320747+0100 XMLMPAM[3657:59571] [js] test(), Line 7 2020-04-08 08:21:36.320762+0100 XMLMPAM[3657:59571] [js] SyntaxError: Expected token `,' 2020-04-08 08:21:36.320769+0100 XMLMPAM[3657:59571] [js] test(), Line 9 2020-04-08 08:21:36.320790+0100 XMLMPAM[3657:59571] [js] test(), Line 14 2020-04-08 08:21:36.320798+0100 XMLMPAM[3657:59571] [js] test(), Line 16 2020-04-08 08:21:36.320804+0100 XMLMPAM[3657:59571] [js] ---------------Ignore everything before the [js] thats my time stamp and debug information, after the [js] is all the console output.
What is the:
SyntaxError: Expected token `,'I can see nothing wrong in the global or the script.
If I modify the script and insert:
var db = {"db":"test","host":"localhost","usr":"root","pass":"123456"};As the first line, the syntax error is not displayed and everything is ok, so what is wrong with global added using setProperty ?
Here is the code that adds a global to the map:
void clsXMLnode::addGlobal(QString strGlobal) { QStringList slstGlobal = strGlobal.split(clsXMLnode::msccGlobalDelimiter); if ( slstGlobal.length() == clsXMLnode::mscintAssignmentParts ) { QString strName(slstGlobal[clsXMLnode::mscintGlobalName].trimmed()) ,strValue(slstGlobal[clsXMLnode::mscintGlobalValue].trimmed()); msmpGlobals.insert(std::make_pair(strName, strValue)); } }Some definitions:
clsXMLnode::msccGlobalDelimiter is "=" clsXMLnode::mscintAssignmentParts is 2 clsXMLnode::mscintGlobalName is 0 clsXMLnode::mscintGlobalValue is 1 -
@SPlatten said in QJSEngine and SyntaxError ?:
The solution was to wrap the JSON in ()
Where are you doing this? On the c++ side or the qml side? I seem to remember some weirdness with something like this, but I honestly don't remember where the problem was.
