[FLEX-23972] Declaring an <mx:Binding/> with an Array source ([]) doesn't work with Flex 4 compiler

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Adobe Flex SDK 4.0 (Release)
• Fix Version/s: Adobe Flex SDK 4.5 (Release)
• Component/s: Data Binding
• Environment: Affected OS(s): Windows; Affected OS(s): Windows 7; Language Found: English
• Assignee: Adobe JIRA
• Reporter: Adobe JIRA
• Created: 14/May/10 02:56
• Updated: 10/May/11 13:43
• Resolved: 17/Aug/10 08:09

Description

Steps to reproduce:
1. Declare an mx:Binding with an inline declared Array source.

compile with either Flash Builder 4 or Ant using:
Flex 4.0 SDK
Flex 3 compatability = false
Flex build path = MX + Spark
Theme = Halo

Actual Results:

Compiler reports an error:
either
1037 Packages cannot be nested.
or (after cleaning)
An internal build error has occurred.

Looking at the log file the error is

!ENTRY com.adobe.flexbuilder.project 4 43 2010-05-14 10:47:23.769
!MESSAGE Uncaught exception in compiler
!STACK 0
java.lang.ClassCastException: macromedia.asc.parser.MetaDataNode cannot be cast to macromedia.asc.parser.ExpressionStatementNode
at flex2.compiler.mxml.ImplementationGenerator.generateSourceFunction(ImplementationGenerator.java:2437)
at flex2.compiler.mxml.ImplementationGenerator.generateBinding(ImplementationGenerator.java:575)
at flex2.compiler.mxml.ImplementationGenerator.generateBindingsSetupFunction(ImplementationGenerator.java:863)
at flex2.compiler.mxml.ImplementationGenerator.generateBindingsSetup(ImplementationGenerator.java:812)
at flex2.compiler.mxml.ImplementationGenerator.generateInitializerSupportDefs(ImplementationGenerator.java:1878)
at flex2.compiler.mxml.ImplementationGenerator.generateClassDefinition(ImplementationGenerator.java:1044)
at flex2.compiler.mxml.ImplementationGenerator.<init>(ImplementationGenerator.java:206)
at flex2.compiler.mxml.ImplementationCompiler.generateImplementationAST(ImplementationCompiler.java:499)
at flex2.compiler.mxml.ImplementationCompiler.parse1(ImplementationCompiler.java:197)
at flex2.compiler.mxml.MxmlCompiler.parse1(MxmlCompiler.java:168)
at flex2.compiler.CompilerAPI.parse1(CompilerAPI.java:2859)
at flex2.compiler.CompilerAPI.parse1(CompilerAPI.java:2812)
at flex2.compiler.CompilerAPI.batch2(CompilerAPI.java:446)
at flex2.compiler.CompilerAPI.batch(CompilerAPI.java:1274)
at flex2.compiler.CompilerAPI.compile(CompilerAPI.java:1496)
at flex2.tools.oem.Application.compile(Application.java:1188)
at flex2.tools.oem.Application.recompile(Application.java:1133)
at flex2.tools.oem.Application.compile(Application.java:819)
at flex2.tools.flexbuilder.BuilderApplication.compile(BuilderApplication.java:344)
at com.adobe.flexbuilder.multisdk.compiler.internal.ASApplicationBuilder$MyBuilder.mybuild(ASApplicationBuilder.java:276)
at com.adobe.flexbuilder.multisdk.compiler.internal.ASApplicationBuilder.build(ASApplicationBuilder.java:127)
at com.adobe.flexbuilder.multisdk.compiler.internal.ASBuilder.build(ASBuilder.java:190)
at com.adobe.flexbuilder.multisdk.compiler.internal.ASItemBuilder.build(ASItemBuilder.java:74)
at com.adobe.flexbuilder.project.compiler.internal.FlexProjectBuilder.buildItem(FlexProjectBuilder.java:480)
at com.adobe.flexbuilder.project.compiler.internal.FlexProjectBuilder.build(FlexProjectBuilder.java:306)
at com.adobe.flexbuilder.project.compiler.internal.FlexIncrementalBuilder.build(FlexIncrementalBuilder.java:157)
at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:627)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:170)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:201)
at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:253)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:256)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:218)
at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:360)
at org.eclipse.core.internal.resources.Project$1.run(Project.java:523)
at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:1800)
at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:1782)
at org.eclipse.core.internal.resources.Project.internalBuild(Project.java:502)
at org.eclipse.core.internal.resources.Project.build(Project.java:94)
at org.eclipse.ui.actions.BuildAction.invokeOperation(BuildAction.java:221)
at org.eclipse.ui.actions.WorkspaceAction.execute(WorkspaceAction.java:162)
at org.eclipse.ui.actions.WorkspaceAction$2.runInWorkspace(WorkspaceAction.java:483)
at org.eclipse.core.internal.resources.InternalWorkspaceJob.run(InternalWorkspaceJob.java:38)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)

Expected Results:

The code should compile with no errors as it did with Flex 3.1.0.2710

Workaround (if any):

either
wrap the inline Array with an ArrayCollection in the Binding declaration (although code hinting/automatic imports don't work).
or
declare the Array in a script block