Internal error in ASBlockWalker subsystem, when generating code for mx.controls.RichTextEditor

[Fancy2209]

/home/paulo/Repos/Flex4Royale/project/projects/mx/src/mx/controls/RichTextEditor.mxml line 275 column 4 Internal error in ASBlockWalker subsystem, when generating code for: /home/paulo/Repos/Flex4Royale/project/projects/mx/src/mx/controls/RichTextEditor.mxml line 275 column 4: java.lang.NullPointerException: Cannot assign field "value" because "ps" is null
        at org.apache.royale.compiler.internal.codegen.mxml.royale.MXMLRoyaleEmitter.emitArray(MXMLRoyaleEmitter.java:3219)
        at org.apache.royale.compiler.internal.codegen.mxml.MXMLBlockWalker.visitArray(MXMLBlockWalker.java:307)
        at org.apache.royale.compiler.internal.visitor.mxml.MXMLNodeSwitch.handle(MXMLNodeSwitch.java:79)
        at org.apache.royale.compiler.internal.codegen.mxml.MXMLBlockWalker.walk(MXMLBlockWalker.java:158)
        at org.apache.royale.compiler.internal.codegen.mxml.royale.MXMLRoyaleEmitter.emitDocument(MXMLRoyaleEmitter.java:892)
        at org.apache.royale.compiler.internal.codegen.mxml.royale.MXMLRoyaleBlockWalker.visitDocument(MXMLRoyaleBlockWalker.java:69)
        at org.apache.royale.compiler.internal.visitor.mxml.MXMLNodeSwitch.handle(MXMLNodeSwitch.java:91)
        at org.apache.royale.compiler.internal.codegen.mxml.MXMLBlockWalker.walk(MXMLBlockWalker.java:158)
        at org.apache.royale.compiler.internal.codegen.mxml.royale.MXMLRoyaleBlockWalker.visitFile(MXMLRoyaleBlockWalker.java:61)
        at org.apache.royale.compiler.internal.visitor.mxml.MXMLNodeSwitch.handle(MXMLNodeSwitch.java:97)
        at org.apache.royale.compiler.internal.codegen.mxml.MXMLBlockWalker.walk(MXMLBlockWalker.java:158)
        at org.apache.royale.compiler.internal.codegen.mxml.MXMLBlockWalker.visitCompilationUnit(MXMLBlockWalker.java:189)
        at org.apache.royale.compiler.internal.codegen.mxml.MXMLWriter.writeTo(MXMLWriter.java:69)
        at org.apache.royale.compiler.clients.COMPJSCNative.writeSWC(COMPJSCNative.java:399)
        at org.apache.royale.compiler.clients.COMPJSCNative.compile(COMPJSCNative.java:201)
        at org.apache.royale.compiler.clients.MXMLJSCNative._mainNoExit(MXMLJSCNative.java:248)
        at org.apache.royale.compiler.clients.MXMLJSCNative.mainNoExit(MXMLJSCNative.java:205)
        at org.apache.royale.compiler.clients.COMPJSC._mainNoExit(COMPJSC.java:203)
        at org.apache.royale.compiler.clients.COMPJSC.mainNoExit(COMPJSC.java:119)
        at org.apache.royale.compiler.clients.COMPJSC.staticMainNoExit(COMPJSC.java:104)
        at org.apache.royale.compiler.clients.COMPJSC.main(COMPJSC.java:84)

Hello!

I have been trying to get Flex 4 working with OpenFL
I got textLayout and framework compiling by cheating a bit and using playerglobal.swc for library path instead of openfl's SWC
However mx does not compile properly, on SWF it works but JS it just throws an Internal Compiler Error.
Code is available here:
https://github.com/Fancy2209/Flex4Royale

[joshtynjala]

Relevant MXML file with line highlighted:

https://github.com/apache/flex-sdk/blob/develop/frameworks/projects/mx/src/mx/controls/RichTextEditor.mxml#L275

My first guess would be that it is related to the file using MXML 2006. Maybe it's not handling non-child object declarations properly (in this case, the Array). MXML 2006 does not use <fx:Declarations>, like MXML 2009. I have definitely fixed other issues with Royale's MXML 2006 parsing related to the lack of <fx:Declarations> in the past. It's possible that there are still issues with it.

[Fancy2209]

I do have children-as-data false from when i was targetting flash, could that be causing issues?

[joshtynjala]

Maybe. It's hard for me to guess. I would need to try compiling it myself and observe which paths the compiler is taking.

[Fancy2209]

Still happens with children-as-data true
log.txt
The code is all in the linked repo, order that has to be taken in compiling is projects/textLayout then projects/framework and then projects/mx