[Flashcoders] Call to a possibly undefined method inflate through a reference with static type flash.utils:ByteArray
Hello,
I'm trying to compress XML data being exchanged via Socket with a Perl
backend and after taking several hurdles, I'm stuck at this error message:
1061: Call to a possibly undefined method inflate through
a reference with static type flash.utils:ByteArray.
My code is:
private var _nbytes:int = 0;
private var _bytes:ByteArray = new ByteArray();
private var _socket:Socket = new Socket();
.
// the length of XML-string is prepended as a short (2 bytes)
private function handleTcpData(event:ProgressEvent):void {
trace('handleTcpData: ' + event);
while (_socket.bytesAvailable 0) {
if (_nbytes = 0) {
if (_socket.bytesAvailable 2) {
trace('Can not read short yet -
bytesAvailable='+
_socket.bytesAvailable);
return;
}
try {
_nbytes = _socket.readShort();
trace('Read _nbytes '+_nbytes);
} catch (e:Error) {
handleTcpError();
}
} else {
if (_socket.bytesAvailable _nbytes) {
trace('Can not read bytes yet -
bytesAvailable='+
_socket.bytesAvailable+'
_nbytes='+_nbytes);
return;
}
try {
_socket.readBytes(_bytes, 0,
_nbytes);
trace('Read _bytes
'+_bytes.length);
} catch (e:Error) {
handleTcpError();
}
}
try {
_bytes.inflate(); // this fails for
some reason?
} catch (error:IOError) {
trace('inflating failed');
}
trace(_bytes.length);
trace(_bytes);
//updateGUI(_bytes);
}
}
Can anyone please spot an error in the code above?
I've started preparing a simple test case, but the following just works:
import flash.utils.*;
var _bytes:ByteArray = new ByteArray();
_bytes.writeUTFBytes('Hello world');
trace('before: ' + _bytes);
try {
_bytes.deflate();
_bytes.inflate();
} catch (e:Error) {
trace(e);
}
trace('after: ' + _bytes);
Thank you for any hints
Alex
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Re: [Flashcoders] Call to a possibly undefined method inflate through a reference with static type flash.utils:ByteArray
I'm trying to compress XML data being exchanged via Socket with a Perl backend and after taking several hurdles, I'm stuck at this error message: 1061: Call to a possibly undefined method inflate through a reference with static type flash.utils:ByteArray. In your code, if there's nothing to read, your exception handlers fall through after calling handleTcpError. At compile time, the compiler has no guarantee that there'll be anything in the byte array. Dave Watts, CTO, Fig Leaf Software http://www.figleaf.com/ http://training.figleaf.com/ Fig Leaf Software is a Veteran-Owned Small Business (VOSB) on GSA Schedule, and provides the highest caliber vendor-authorized instruction at our training centers, online, or onsite. ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
Re: [Flashcoders] Call to a possibly undefined method inflate through a reference with static type flash.utils:ByteArray
On Sun, Oct 3, 2010 at 6:27 PM, Dave Watts dwa...@figleaf.com wrote:
In your code, if there's nothing to read, your exception handlers fall
through after calling handleTcpError. At compile time, the compiler
has no guarantee that there'll be anything in the byte array.
Thanks Dave, you're correct with the fall-through.
I've added return| statements in the catch branches there.
However the compile-time error still persists:
1061: Call to a possibly undefined method inflate through
a reference with static type flash.utils:ByteArray.
I wonder why does compiler think, that _bytes is static?
Also if I remove the _bytes.inflate(), then the socket I/O works
ok, I can see the same amount of (deflated) bytes being read
as I send from my backend.
private function handleTcpData(event:ProgressEvent):void {
trace('handleTcpData: ' + event);
while (_socket.bytesAvailable 0) {
if (_nbytes = 0) {
if (_socket.bytesAvailable 2) {
trace('Can not read short yet -
bytesAvailable='+
_socket.bytesAvailable);
return;
}
try {
_nbytes = _socket.readShort();
trace('Read _nbytes '+_nbytes);
} catch (e:Error) {
handleTcpError();
return;
}
} else {
if (_socket.bytesAvailable _nbytes) {
trace('Can not read bytes yet -
bytesAvailable='+
_socket.bytesAvailable+'
_nbytes='+_nbytes);
return;
}
try {
_socket.readBytes(_bytes, 0,
_nbytes);
trace('Read _bytes
'+_bytes.length);
} catch (e:Error) {
handleTcpError();
return;
}
}
try {
_bytes.inflate(); // this fails
} catch (error:IOError) {
trace('inflating failed');
}
trace(_bytes.length);
trace(_bytes);
//updateGUI(_bytes);
}
}
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Re: [Flashcoders] Call to a possibly undefined method inflate through a reference with static type flash.utils:ByteArray
I've even added 2 checks for the _nbytes being 0
and a check for _bytes != null and still it fails with
1061: Call to a possibly undefined method inflate through
a reference with static type flash.utils:ByteArray.
(ok, I understand that by static compiler means _bytes being null)
My current code:
private var _nbytes:int = 0;
private var _bytes:ByteArray = new ByteArray();
private var _socket:Socket = new Socket();
.
// the length of XML-string is prepended as a short (2 bytes)
private function handleTcpData(event:ProgressEvent):void {
trace('handleTcpData: ' + event);
while (_socket.bytesAvailable 0) {
if (_nbytes = 0) {
if (_socket.bytesAvailable 2) {
trace('Can not read short yet -
bytesAvailable='+_socket.bytesAvailable);
return;
}
try {
_nbytes = _socket.readShort();
trace('Read _nbytes '+_nbytes);
} catch (e:Error) {
handleTcpError();
return;
}
if (_nbytes = 0) {
trace('invalid length');
return;
}
} else {
if (_socket.bytesAvailable _nbytes) {
trace('Can not read bytes yet -
bytesAvailable='+_socket.bytesAvailable+' _nbytes='+_nbytes);
return;
}
try {
_socket.readBytes(_bytes, 0,
_nbytes);
trace('Read _bytes
'+_bytes.length);
} catch (e:Error) {
handleTcpError();
return;
}
}
if (_bytes != null _bytes.length 0) {
try {
_bytes.inflate();
} catch (error:IOError) {
trace('inflating failed');
return;
}
trace(_bytes.length);
trace(_bytes);
//updateGUI(_bytes);
}
}
}
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Re: [Flashcoders] Call to a possibly undefined method inflate through a reference with static type flash.utils:ByteArray
Dave Watts skriver: I'm trying to compress XML data being exchanged via Socket with a Perl backend and after taking several hurdles, I'm stuck at this error message: 1061: Call to a possibly undefined method inflate through a reference with static type flash.utils:ByteArray. In your code, if there's nothing to read, your exception handlers fall through after calling handleTcpError. At compile time, the compiler has no guarantee that there'll be anything in the byte array. So what? That is no grounds for throwing a compiler error. It's your job to ensure that stuff is setup properly at runtime. A runtime issue will never raise a compiler time error. ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
Re: [Flashcoders] Call to a possibly undefined method inflate through a reference with static type flash.utils:ByteArray
On Sun, Oct 3, 2010 at 7:44 PM, Henrik Andersson he...@henke37.cjb.net wrote: Dave Watts skriver: In your code, if there's nothing to read, your exception handlers fall through after calling handleTcpError. At compile time, the compiler has no guarantee that there'll be anything in the byte array. So what? That is no grounds for throwing a compiler error. It's your job to ensure that stuff is setup properly at runtime. A runtime issue will never raise a compiler time error. No, I think Dave has a valid point - if my ByteArray _bytes is null - because a socket read has thrown an exception, then the compiler might be able to recognize it (same is in Java). But now I have added return's everywhere and strangely it still doesn't compile. I've searched my code for all occurences of _bytes and _nbytes too... Regards Alex ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
Re: [Flashcoders] Call to a possibly undefined method inflate through a reference with static type flash.utils:ByteArray
It looks to me like your compiler error is due to a call to _bytes.inflate() where the compiler detects that inflate() is not a method of the ByteArray class, I think it was added in later player versions - check your publish settings? older docs (missing): http://www.adobe.com/livedocs/flash/9.0/ActionScriptLangRefV3/flash/utils/ByteArray.html newer docs (present): http://help.adobe.com/en_US/AS3LCR/Flash_10.0/flash/utils/ByteArray.html HTH Tom On 3 Oct 2010, at 18:44, Henrik Andersson wrote: Dave Watts skriver: I'm trying to compress XML data being exchanged via Socket with a Perl backend and after taking several hurdles, I'm stuck at this error message: 1061: Call to a possibly undefined method inflate through a reference with static type flash.utils:ByteArray. In your code, if there's nothing to read, your exception handlers fall through after calling handleTcpError. At compile time, the compiler has no guarantee that there'll be anything in the byte array. So what? That is no grounds for throwing a compiler error. It's your job to ensure that stuff is setup properly at runtime. A runtime issue will never raise a compiler time error. ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
Re: [Flashcoders] Call to a possibly undefined method inflate through a reference with static type flash.utils:ByteArray
Bingo, Tom - On Sun, Oct 3, 2010 at 8:14 PM, Tom Gooding t...@quickthinkmedia.co.uk wrote: It looks to me like your compiler error is due to a call to _bytes.inflate() where the compiler detects that inflate() is not a method of the ByteArray class, I think it was added in later player versions - check your publish settings? older docs (missing): http://www.adobe.com/livedocs/flash/9.0/ActionScriptLangRefV3/flash/utils/ByteArray.html newer docs (present): http://help.adobe.com/en_US/AS3LCR/Flash_10.0/flash/utils/ByteArray.html 1061: Call to a possibly undefined method inflate through a reference with static type flash.utils:ByteArray. I was publishing for Player 9! After I've changed it to Player 10, the code has compiled. Thank you If I want to publish for Player 9, then I probably have to modify my backend to use zlib and then call _bytes.uncompress()? Regards Alex ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
Re: [Flashcoders] Call to a possibly undefined method inflate through a reference with static type flash.utils:ByteArray
Alexander Farber skriver: On Sun, Oct 3, 2010 at 7:44 PM, Henrik Anderssonhe...@henke37.cjb.net wrote: Dave Watts skriver: In your code, if there's nothing to read, your exception handlers fall through after calling handleTcpError. At compile time, the compiler has no guarantee that there'll be anything in the byte array. So what? That is no grounds for throwing a compiler error. It's your job to ensure that stuff is setup properly at runtime. A runtime issue will never raise a compiler time error. No, I think Dave has a valid point - if my ByteArray _bytes is null - because a socket read has thrown an exception, then the compiler might be able to recognize it (same is in Java). The compiler does not know that an exception has been thrown. That's runtime events. Exceptions are not checked in actionscript, so the compiler MAY NOT raise any errors. ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
Re: [Flashcoders] Call to a possibly undefined method inflate through a reference with static type flash.utils:ByteArray
No, I think Dave has a valid point - if my ByteArray _bytes is null - because a socket read has thrown an exception, then the compiler might be able to recognize it (same is in Java). The compiler does not know that an exception has been thrown. That's runtime events. Exceptions are not checked in actionscript, so the compiler MAY NOT raise any errors. In general, I think Henrik is more likely to be correct about Actionscript than I am. I've been doing a lot of Java programming lately, where you do have checked exceptions, but I'm off the mark here. Dave Watts, CTO, Fig Leaf Software http://www.figleaf.com/ http://training.figleaf.com/ Fig Leaf Software is a Veteran-Owned Small Business (VOSB) on GSA Schedule, and provides the highest caliber vendor-authorized instruction at our training centers, online, or onsite. ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
