Josh Tynjala created FLEX-35323:
-----------------------------------
Summary: NullPointerException when setting property of
<fx:Object/> with binding
Key: FLEX-35323
URL: https://issues.apache.org/jira/browse/FLEX-35323
Project: Apache Flex
Issue Type: Bug
Components: Falcon
Affects Versions: Apache FalconJX 0.7.0
Reporter: Josh Tynjala
Using the following code:
{code:title=src/InternalError.mxml}
<?xml version="1.0" encoding="utf-8"?>
<js:Application xmlns:fx="http://ns.adobe.com/mxml/2009";
xmlns:js="library://ns.apache.org/flexjs/basic"
xmlns:local="*">
<fx:Declarations>
<fx:Object test="{MY_CONST}"/>
</fx:Declarations>
<js:initialView>
<js:View>
<js:Label id="label" text="Hello World" x="100" y="100"
click="event.target"/>
</js:View>
</js:initialView>
<js:valuesImpl>
<js:SimpleCSSValuesImpl />
</js:valuesImpl>
<fx:Script><![CDATA[
public static const MY_CONST:String = "hello";
]]></fx:Script>
</js:Application>
{code}
Compile with js/bin/mxmlc:
{code}
mxmlc src/InternalError.mxml
{code}
The following error will be included in the output:
{code}
InternalError.mxml Error: Internal error in ABC generator subsystem, when
generating code for:
/Users/joshtynjala/Development/NextGenAS/examples/HelloFlexJS/src/HelloFlexJS.mxml:
java.lang.NullPointerException
at
org.apache.flex.compiler.internal.as.codegen.LexicalScope.getNameFromDefinition(LexicalScope.java:1178)
at
org.apache.flex.compiler.internal.as.codegen.LexicalScope.getBinding(LexicalScope.java:1069)
at
org.apache.flex.compiler.internal.codegen.databinding.BindingDestinationMaker.makeDestinationFunctionInstructionList(BindingDestinationMaker.java:131)
at
org.apache.flex.compiler.internal.codegen.databinding.BindingInfo.<init>(BindingInfo.java:114)
at
org.apache.flex.compiler.internal.codegen.databinding.BindingAnalyzer.analyze(BindingAnalyzer.java:56)
at
org.apache.flex.compiler.internal.codegen.databinding.BindingDatabase.analyze(BindingDatabase.java:122)
at
org.apache.flex.compiler.internal.codegen.databinding.MXMLBindingDirectiveHelper.visitNode(MXMLBindingDirectiveHelper.java:116)
at
org.apache.flex.compiler.internal.as.codegen.MXMLClassDirectiveProcessor.processMXMLDataBinding(MXMLClassDirectiveProcessor.java:4803)
at
org.apache.flex.compiler.internal.as.codegen.MXMLClassDirectiveProcessor.processMXMLPropertySpecifier(MXMLClassDirectiveProcessor.java:3702)
at
org.apache.flex.compiler.internal.as.codegen.MXMLClassDirectiveProcessor.processNode(MXMLClassDirectiveProcessor.java:962)
at
org.apache.flex.compiler.internal.as.codegen.MXMLClassDirectiveProcessor.traverse(MXMLClassDirectiveProcessor.java:861)
at
org.apache.flex.compiler.internal.as.codegen.MXMLClassDirectiveProcessor.traverse(MXMLClassDirectiveProcessor.java:831)
at
org.apache.flex.compiler.internal.as.codegen.MXMLClassDirectiveProcessor.processMXMLObject(MXMLClassDirectiveProcessor.java:3014)
at
org.apache.flex.compiler.internal.as.codegen.MXMLClassDirectiveProcessor.processNode(MXMLClassDirectiveProcessor.java:919)
at
org.apache.flex.compiler.internal.as.codegen.MXMLClassDirectiveProcessor.traverse(MXMLClassDirectiveProcessor.java:861)
at
org.apache.flex.compiler.internal.as.codegen.MXMLClassDirectiveProcessor.traverse(MXMLClassDirectiveProcessor.java:831)
at
org.apache.flex.compiler.internal.as.codegen.MXMLClassDirectiveProcessor.processMXMLDeclarations(MXMLClassDirectiveProcessor.java:4132)
at
org.apache.flex.compiler.internal.as.codegen.MXMLClassDirectiveProcessor.processNode(MXMLClassDirectiveProcessor.java:977)
at
org.apache.flex.compiler.internal.as.codegen.MXMLClassDirectiveProcessor.traverse(MXMLClassDirectiveProcessor.java:861)
at
org.apache.flex.compiler.internal.as.codegen.MXMLClassDirectiveProcessor.traverse(MXMLClassDirectiveProcessor.java:831)
at
org.apache.flex.compiler.internal.as.codegen.MXMLClassDirectiveProcessor.processMainClassDefinitionNode(MXMLClassDirectiveProcessor.java:653)
at
org.apache.flex.compiler.internal.as.codegen.GlobalDirectiveProcessor.declareMXMLDocument(GlobalDirectiveProcessor.java:518)
at
org.apache.flex.compiler.internal.as.codegen.DirectiveProcessor.processNode(DirectiveProcessor.java:232)
at
org.apache.flex.compiler.internal.as.codegen.DirectiveProcessor.traverse(DirectiveProcessor.java:188)
at
org.apache.flex.compiler.internal.as.codegen.ABCGenerator.generate(ABCGenerator.java:122)
at
org.apache.flex.compiler.internal.units.MXMLCompilationUnit.handleABCBytesRequest(MXMLCompilationUnit.java:199)
at
org.apache.flex.compiler.internal.units.CompilationUnitBase.processABCBytesRequest(CompilationUnitBase.java:876)
at
org.apache.flex.compiler.internal.units.CompilationUnitBase.access$300(CompilationUnitBase.java:109)
at
org.apache.flex.compiler.internal.units.CompilationUnitBase$4$1.call(CompilationUnitBase.java:313)
at
org.apache.flex.compiler.internal.units.CompilationUnitBase$4$1.call(CompilationUnitBase.java:309)
at
org.apache.flex.compiler.internal.units.requests.RequestMaker$1.call(RequestMaker.java:228)
at
org.apache.flex.compiler.internal.units.requests.RequestMaker$1.call(RequestMaker.java:222)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
{code}
Can reproduce with both FlexJS 0.7.0 and the latest 0.8.0 release branch
nightly.
Simply setting the property without binding does not produce a
NullPointerException.
Instead of using <fx:Object/>, if you switch to the following code, there is no
NullPointerException:
{code}
<js:Label text="{MY_CONST}"/>
{code}
With that in mind, it may have something to do with the fact that the Object
class is dynamic.
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